Science topic

Fees and Charges - Science topic

Fees and Charges are amounts charged to the patient as payer for health care services.
Questions related to Fees and Charges
  • asked a question related to Fees and Charges
Question
2 answers
Good day Fellow Electrical/Electronic Engineers I am having a conceptual challenge here when deriving the DC Current transfer functions (i.e Relationship between Input Current (Ii) from Unregulated DC input power supply and Load Current (Io) drawn by the load from the regulated Boost Converter operating in Continuous Conduction mode). So the challenge is this, when i use the Volt-Second balance equations and derive the ON-time and OFF-time ratios which are equal to the Voff and Von voltage ratio....i can actually replace the ON-time with Voff, and OFF-time with Von in the Duty cycle equation to get a relationship between Vin (unregulated DC voltage input) and Vo (Regulated DC voltage output) connected by the Duty cycle for switching ON and OFF the MOSFET or BJT switches. Using the Power Balance equation, i.e Pin=Pout, which implies 100% efficiency, assuming no power losses in the rectifier diode when forward biased and the BJT in saturation mode, i then found that Ii=Io/(1-D). Now, if i try to derive this expression, i.e Ii=Io/(1-D), using basic concepts i get stuck. WHY? In continuous conduction mode, the Inductor current of the Boost regulator is not allowed to discharge till the Inductor current reaches 0A or NO conduction in the OFF-state. This means the inductor does not completely discharge before the next ON-state cycle begins. Now, during the OFF-state of the BJT or MOSFET switch, the inductor current discharges and the current waveform is a negative gradient moving from the peak inductor current to some arbitrary current below the average inductor current=input current (Ii). Literature seems to show the average load current as Io=Ii*Toff/T=Ii*(1-D)...which implies Ii=Io/(1-D). However, when i analyze this i actually get confused because then it implies that the total charge discharged during the OFF-state is Ii*Toff and that charge which is discharged during the OFF-state actually charges the output Capacitor of the Boost Regulator with Io*Ton charge and also supplies the load with Io*Toff charge which implies that during the OFF-state the inductor charges the Capacitor with enough charge that it, the Capacitor, can supply the load Io current for Ton duration during the ON-state when the inductor is cut-off from the output circuit by the rectifier diode. It also means that the inductor supplies Io current for Toff duration during the OFF-state.. However, where does this charge come from....If Ii*Toff=Io*Ton+Io*Toff=Io*(Ton+Toff)=Io*T...this implies that the charge to charge the capacitor and supply the load during the OFF-state is actually the total charge, or Area, under the current discharge waveform of the Inductor in the OFF-state which contradicts the Continuous Conduction Mode philosophy. Who can assist?
Relevant answer
Answer
Consider driving a car without hill start support on a sloped road. Even though you want to go forward, there is a situation where the car slides backwards to a certain extent. For the boost converter, this creates an effect that delays the system reaching stability.
In control systems, this situation is known as undershoot and is caused by a positive zero in the denominator of the system's transfer function (zero in the right half plane).
  • asked a question related to Fees and Charges
Question
1 answer
Hai...could anyone suggest for me a journal with rapid publication in the field of microalgal CO2 sequestration.(review work)... a journal indexed in WOS, Scopus, SCIE with no publication fees..
Thank you
Relevant answer
Answer
You may try the Journal of Bioresource Technology. They complete their process in around 40 days. Also, there are a lot of journals.
  • asked a question related to Fees and Charges
Question
1 answer
For publishing transformation related method I need name of some journals without costing us Article Processing Charges. Kindly help.
  • asked a question related to Fees and Charges
Question
5 answers
Is there any mathematical relationship between zeta potential and both the polydispersive index (PDI) and pH of the zero-point charge of the nanoparticles?
Relevant answer
Answer
It is correct to formulate “for some dispersed systems, the value of zeta potential depends differently on pH.” There are disperse systems that do not depend on the pH of the dispersion medium.
  • asked a question related to Fees and Charges
Question
5 answers
Dear all,
I would like to publish my papers in a journal. Since it is strongly required to publish the paper in an international journal indexed by Scopus, I face some difficulties due to some fees that must be paid (which is very high) by the author.
My research areas are computer science, artificial intelligence, machine learning, Pattern recognition, natural language processing and Social Media Analytics.
Are there any Scopus-indexed journals without without any article processing charge or other hidden charges for publication and suitable for my research areas?
I would like to thanks for your kind help.
With best regards,
Amit
Relevant answer
Answer
Dear Amit Das
As indicated by Andrius Ambrutis you can consider choosing subscription-based journals or so-called hybrid journals (hybrid journals are basically subscription-based with open access options, which you can decline). In most cases these journals are free of costs. See for example:
Open access journals (in most cases) charge an APC. However, there are open access journals that charge nothing. See for example: https://www.researchgate.net/post/Scientific_Journals_with_Open_Access_and_no_APC_free_charges_for_authors
Or go to https://doaj.org search for let’s say “computer” and tik the box “without fee”. You subsequently can check the titles which are Scopus indexed in the Scopus Source list (see enclosed file).
Best regards.
  • asked a question related to Fees and Charges
Question
1 answer
Why? Why not?
Relevant answer
Answer
Actually there are experiments right now to discover such a moment. Not only for neutron, but also for electron:
Electron electric dipole moment - Wikipedia
So it is expected to exist in standard model (but very small indeed). If the Big Bang rejected it does not mean the whole Standard Model is wrong (after all it explained quarks and Higgs boson etc). It is much easier to imagine existence of the undiscovered yet phenomena which eliminate the need for Big Bang, replacing the explanation of red shift by tired light (including mass dipole - gravitational dipole h/c (h/v for non-relativistic particle). Here is my approach:
(PDF) The quest for new physics. An experimentalist approach. Vol.2 (The second book on the topic, with emphasis on certain ideas.) (researchgate.net)
  • asked a question related to Fees and Charges
Question
2 answers
Are there any students, researchers and sector employees who would like to present their research abstract (free of charge) at an international congress and thus contribute to their own development?
Relevant answer
  • asked a question related to Fees and Charges
Question
5 answers
"No, a degree isn't necessary to become a software engineer. Since the work relies so heavily on technical skill, you could get a job simply by proving that you know how to do the work. Most job interviews for software engineers will assign you a series of tests to gauge your abilities."
Relevant answer
Answer
There has always been a debate on practical education vs theoretical education. The question of learning software engineering without a degree posit into this argument. I learnt software engineering without a degree. It was passion and hands on practice. I have gained much technical skills with constant practice over the years but that notwithstanding, I realize that the practical skills are based on some theories. And for these theories, I go back to all the time. Practical skills are good however, understanding the theories before the practice makes one a better engineer. Hence getting a degree, which deals more with theories prepares a better foundation for practical skills.
It is worth noting that starting with practical skills may take an individual a longer time to understand the concepts and principles in a particular field whereas starting with the theories makes practical lessons easy. I must admit that some persons are naturally inclined to theoretical education while other do well in practical skills. That notwithstanding, the best is to blend both theoretical and practical skills.
  • asked a question related to Fees and Charges
Question
3 answers
Iam designing a buck converter of input 200V with an output V of 48V with current more than 10amp for charging a battery. Can we convert 200v to 48 v, What can be the design problems that i can face. Can u suggest me driver Circuit for this circuit
Relevant answer
Answer
A related question is being discussed on ResearchGate. And Josnier, a contributor here is part of that discussion.bMaybe you can get everyone together on this. See the question; "Average Current Control vs Voltage Mode Control at Buck Converter" asked by Mutluhan Özkan...at this link:
  • asked a question related to Fees and Charges
Question
3 answers
Please, is there someone that could lead me to a tourism journal easy and quick to publish in, that charges low fees and at least Google scholar indexed. I look forward to your response 🙏
  • asked a question related to Fees and Charges
Question
2 answers
I have a protein, for which I want to computationally study the effect of its phosphorylation. I was able to add a phosphoryl group to my desired THR residue and the structure looks fine. However, when I try to generate topology using gmx_pdb2gmx, it does not work. I figured it has to do with the extra phosphoryl that i added, which is naturally absent in the aminoacids.rtp file. Hence, I manually created another entry namely "pTHR", where I added the charges for the THR along with the phosphoryl. I tried to generate the topology once again, but its still not accepting it. Kindly tell me if anyone has done it before on gromacs. Thanks, ahead of time.
My phosphothreonine looks like this:
ATOM 2808 N pTHR A 174 231.841 -74.271 -80.471 1.00 0.00 N
ATOM 2809 H pTHR A 174 231.591 -73.451 -81.001 1.00 0.00 H
ATOM 2810 CA pTHR A 174 231.141 -75.531 -80.731 1.00 0.00 C
ATOM 2811 HA pTHR A 174 230.571 -75.901 -79.881 1.00 0.00 H
ATOM 2812 CB pTHR A 174 230.081 -75.331 -81.901 1.00 0.00 C
ATOM 2813 HB pTHR A 174 230.651 -75.081 -82.791 1.00 0.00 H
ATOM 2814 CG2pTHR A 174 229.231 -76.511 -82.181 1.00 0.00 C
ATOM 2815 1HG2pTHR A 174 228.451 -76.411 -82.951 1.00 0.00 H
ATOM 2816 2HG2pTHR A 174 229.861 -77.351 -82.471 1.00 0.00 H
ATOM 2817 3HG2pTHR A 174 228.771 -76.881 -81.261 1.00 0.00 H
ATOM 2818 OG1pTHR A 174 229.141 -74.291 -81.511 1.00 0.00 O
ATOM 2819 C pTHR A 174 232.111 -76.601 -81.201 1.00 0.00 C
ATOM 2820 O pTHR A 174 232.911 -76.371 -82.101 1.00 0.00 O
ATOM 2821 P pTHR A 174 227.940 -74.052 -82.816 1.00 0.00 P
ATOM 2822 O1 pTHR A 174 227.269 -72.653 -82.656 1.00 0.00 O
ATOM 2823 O2 pTHR A 174 228.744 -74.140 -84.379 1.00 0.00 O
ATOM 2824 O3 pTHR A 174 226.709 -75.306 -82.719 1.00 0.00 O
Relevant answer
Answer
Which FF you are using?
Nowadays, Forcefields inherently supports the phosphorylation of various reisudes, you donot need to add them.
You can read further on this one here:
For adding your desired residue, you need to follow steps outlined here:
Just a quick fix, instead of using pTHR, just name it to THX or some 3 digit letter, alongwith follow the steps of how to add residue in a forece field.
  • asked a question related to Fees and Charges
Question
11 answers
Is an electromagnetic wave produced by a charge moving with a constant velocity and accelerated proton emits electromagnetic radiation?
Relevant answer
Answer
In addition to all previous answer, Dear Prof. Rk Naresh I advice to read chapter VIII of Vol. 2 "The classical theory of fields" by Profs. L. Landau and E. Lifshitz, i.e., "the field of moving charges".
Best Regards.
  • asked a question related to Fees and Charges
Question
1 answer
Hello all,
I want to calculate fragment charge from a complex after optimize its structure. Is there any software that could do that?
Thanks in advance
Relevant answer
Answer
Yes, you can do the same with Gaussian software. MolQube Group will help you. Email them: [email protected]
  • asked a question related to Fees and Charges
Question
4 answers
The point of zero charge (pHpzc) indicates in which pH the adsorbent and adsorbate prefer to adsorb each other. At this pH, the number of positive charges are equal to the number of negative charges. To evaluate the pHpzc, 0.03 g of the adsorbent (PTA@MIL–53 (Fe)) was added to each 10 different 60 mL beakers containing 0.1 M KNO3 solution. HCl (1.0 N) as a strong acid and NaOH (1.0 N) as a strong base were applied to adjust the initial pH of each beaker (pHi) between 2–11. The samples were stirred for 24 hrs to get equilibrated and then the final pH values (pHf) correspond to the pH at which there is no net OH− or H+ adsorption, were measured. Then the diagram of pHi–pHf was plotted versus pHi. As depicted in Figure 5.8, the pHpzc was found to be 4.3 which was obtained from the intersection between the sketched curve and horizontal axis.
  • asked a question related to Fees and Charges
Question
3 answers
Hello scholars,
I am looking for a list of journals with scope in computer science, information technology, or education that do not charge a publication processing fee and are recognized by the Higher Education Commission (HEC) under categories W, X, and Y. Additionally, I would appreciate information on the paper acceptance rate, publication cycle, and any other relevant details for each journal on the list.
If you have any recommendations or resources that can help me, find such journals, please share them here. Your expertise and insights would be greatly appreciated.
Thank you!"
Relevant answer
Answer
Regarding publication processing fees, while some journals do not charge a publication fee (often referred to as APC or Article Processing Charge), it's less common for reputable journals to offer completely fee-free publication. However, there are journals with reasonable fees, particularly for authors from certain countries or institutions.
To find journals with no or low publication fees, consider the following strategies:
  1. Check Journal Websites: Many journals list their publication fees and policies on their websites. Look for journals in your field of interest and review their author guidelines or publication charges sections.
  2. Use Journal Directories: Platforms like DOAJ (Directory of Open Access Journals) or PubMed Central provide lists of open-access journals, some of which may have no or minimal publication fees.
  3. Consult Institutional Resources: Your university or research institution may maintain a list of recommended journals or have resources to help researchers find suitable publication venues.
  4. Reach Out to Colleagues: Ask colleagues or mentors in your field for recommendations on journals with affordable publication options.
  5. Consider Predatory Journals: Exercise caution with predatory journals, which may claim to offer free publication but often lack rigorous peer review and editorial standards. Verify the credibility and reputation of any journal before submitting your work.
Remember to thoroughly evaluate the credibility, peer review process, and indexing status of any journal you consider, regardless of publication fees. Quality and reputation are essential factors to ensure your research receives proper recognition and dissemination.
  • asked a question related to Fees and Charges
Question
2 answers
Wireless charging for EVs is considered as efficient and fast as charging with a plug,
Relevant answer
Answer
Wireless charging for electric vehicles (EVs) is a promising technology that is already being tested and implemented in some parts of the world. Here's a breakdown of its potential:
The good news:
  • Convenience: Imagine simply parking your EV and it starts charging automatically, no fiddling with plugs needed.
  • Efficiency: Wireless charging can be just as efficient as plug-in charging, with some systems reaching 90-93% efficiency.
  • Already in use: Some countries are already piloting wireless charging stations, and major car companies are developing compatible vehicles.
Challenges to address:
  • Standardization: There's no universal standard yet, which could slow down widespread adoption.
  • Infrastructure: Equipping parking spaces with charging pads requires significant investment.
  • Charging speed: While Level 2 charging speeds are achievable, super-fast charging like Tesla's Superchargers might take longer to develop wirelessly.
Overall, wireless charging is likely to play a role in the future of EVs, but it may not completely replace plug-in charging. It's expected to be more convenient for home and public parking lot charging, while plug-in charging might remain dominant for fast-charging stations on long trips.
  • asked a question related to Fees and Charges
Question
1 answer
I've seen published papers from my colleagues in Iran which were free of charge
What should I do to get a full discount?
Relevant answer
Answer
Dear Professor, you can apply for a reduction of the related fees by filling out the APC discount application form. https://frontiersin.qualtrics.com/jfe/form/SV_9YqUCmY73k4Gm0u
  • asked a question related to Fees and Charges
Question
1 answer
I am doing DFT calculations on a series of compounds, but I have two important questions.
1- How can I calculate the spin multiplicity for a large molecule with -1 and -2 charge.
2- To calculate the redox potential for the transfer of the second electron, am I allowed to do the calculations in the gas phase for the anion with charge -1 to obtain the free energy change in the gas phase? (And then the calculations in the solvent state for the anion with charge -1 and -2)? Or is only the free energy change calculations valid for the neutral species in the gas phase?
Relevant answer
Answer
1) The spin multiplicity is an input parameter at the beginning, not a result at the end, so if you don't know it from intuition, you'll have to try what's more stable. Please be aware that DFT is a single reference method, so even if it converges, there's no guarantee that it will be accurate.
2) Redox potentials are highly non-trivial (as is everything with DFT and solvents); here is a guideline:
Maybe someone with more expertise than me can weigh in on the second part as well.
  • asked a question related to Fees and Charges
Question
4 answers
If the electron is a point-size ball of charge, the field it creates is infinitely strong at the electron's location. This means the field would have no defined direction and thus no defined forces, which leads to problems in calculating the forces. But if the electron is instead an extended field of charge, the forces on the different parts of the electron would be finite with well-defined directions. But if the electron's charge is spread out, why don't the various parts of the electron repel one another so that the electron rapidly explodes?
Relevant answer
Answer
Any medium comtains about the same no. Of positive and negative charges ie the atom
Hence polarization and screening
Of charges
  • asked a question related to Fees and Charges
Question
2 answers
Hi, I want to perform Galvanostatic charge/discharge studies using Wonatech SP1 electrochemical workstation. I do not know how to do this. There are two tests showing in this. One is CC/CC test and next is CC/CV test. Which in this is for super capacitor studies we uses?. I do not know the parameters to put in it as well. Kindly someone help me with it. In particular those who are using this workstation. For a reference the picture of both CC/CC and CC/CV are attached with this email. Thank you.
Relevant answer
Answer
Hey there Sajna Ss!
Performing galvanostatic charge/discharge studies using the Wonatech SP1 electrochemical workstation is a fantastic choice for exploring the behavior of your supercapacitors.
Firstly, let's clarify the tests. The CC/CC test stands for Constant Current/Constant Current, while CC/CV refers to Constant Current/Constant Voltage. For supercapacitor studies, we typically use the CC/CV test.
Here's a concise guide to get you Sajna Ss started:
1. **Setting up the Experiment:**
- Connect your Sajna Ss supercapacitor to the workstation ensuring proper electrode connections.
- Open the software interface and select the CC/CV test option.
2. **Defining Parameters:**
- For the CC/CV test, you'll Sajna Ss need to input several parameters:
- Initial voltage: Set the initial voltage to the desired starting point.
- Final voltage: Define the voltage at which the test should terminate.
- Current limit: Specify the maximum current that can flow during the test.
- Scan rate: Choose the rate at which the voltage will change during the CV phase.
3. **Running the Test:**
- Once all parameters are set, initiate the experiment.
- The workstation will then apply a constant current until the voltage reaches the set limit.
- Following this, it will switch to constant voltage mode until the current drops below the set threshold.
4. **Data Analysis:**
- After completion, analyze the data obtained to understand the charge/discharge behavior of your supercapacitor.
By following these steps and adjusting parameters as needed based on your Sajna Ss specific experiment, you'll Sajna Ss be well on your Sajna Ss way to gaining valuable insights into your Sajna Ss supercapacitor's performance.
If you Sajna Ss have any further questions or encounter any issues during the process, feel free to reach out. Happy experimenting!
  • asked a question related to Fees and Charges
Question
1 answer
What is a super vacuum? Is the earth in a vacuum? And what is dark energy?
It has not been proven until today and nature has always applied and proven exceptions and violations in the accepted theories many times in the past. That these were merely human formalisms and experimental artifacts and exploiting the limits of technology, and physical limits and laws are constantly being broken and bent in nature. Hereby we will attempt to show theoretically why and how there is and experimentally evidence in our universe of vacuum space, either in its theoretically idealized absolute form, thus free space or the partial vacuum that characterizes the vacuum of QED or QCD. And its zero-point energy and oscillations may actually be the greatest proof in nature for super energy.
It is possible without violating causation. that the apparent effect of "nothing" of vacuum space may be evidence for it
superluminocity and all this time it was hidden right in front of us. We are here trying to answer a fundamental question of physics, why the vacuum is basically space to us looks like nothing on the assumption that "nothing" exists in nature, and why a hypothetical superluminous vibration, a particle the size of Planck creates apparent nothingness in our spacetime. The novelty of the research here infers that free space is dark energy and that superluminous energy.
Stam Nicolis added a reply:
(1) Depends what is meant by ``super vacuum''. The words must, first, be defined, before questions can be asked. As it stands, it doesn't mean anything.
(2) To a good approximation the earth is moving around the Sun in a vacuum, i.e. its motion can be described by Newtonian mechanics, where the only bodies are the Earth and the Sun and the force between them is Newton's force of gravitation.
(3) Dark energy is the property of space and time that describes the fact that the Universe isn't, simply, expanding, but that this expansion is accelerating. To detect its effects it's necessary to measure the motion of bodies outside our galaxy.
To understand all this it's necessary to study classical mechanics-that leads to understanding the answer to the second question-and general relativity-in order to understand the answer to the third
László Attila Horváth added a reply:
Dear Abbas Kashani ,
The graviton - which creates or capture elementary X-rays and gamma rays- , by itself, it can be considered almost like a super vacuum.
Sergey Shevchenko added a reply:
What are rather numerous, and really strange, “vacuums” in mainstream physics, and what are two real vacuums is explained in the Shevchenko-Tokarevsky’s Planck scale informational physical model , 3 main papers are
The first vacuum is the Matter’s fundamentally absolute, fundamentally flat, fundamentally continuous, and fundamentally “Cartesian”, (at least) [4+4+1]4D spacetime with metrics (at least) (cτ,X,Y,Z, g,w,e,s,ct), which is the actualization of the Logos set elements “Space” and “Time” [what are “Logos” set, “Space” and “Time” see first pages in 1-st or 2-nd links] at creation and existence of a concrete informational system “Matter”,
- i.e. this vacuum is a logical possibility for/of Matter’s existence and evolving, and so is by definition nothing else than some fundamentally “empty container” , i.e. is “real/absolute” vacuum.
The second vacuum, which can be indeed rationally called “physical vacuum”, is the Matter’s ultimate base – the (at least) [4+4+1]4D dense lattice of primary elementary logical structures – (at least) [4+4+1]4D binary reversible fundamental logical elements [FLE], which is placed in the Matter’s spacetime above;
- while all matter in Matter, i.e. all particles, fields, stars, galaxies, etc., are only disturbances in the lattice, that were/are created at impacts on some the lattice’s FLE. At that it looks as rather rational scientifically to assume, that such vacuum really existed – that was the initial version of the lattice that was created/formed at the “inflation epoch”, more see the SS&VT initial cosmological model in section “Cosmology” in 2-nd link.
After this initial lattice version was created, in the lattice a huge portion of energy was pumped uniformly globally [and non-uniformly locally], what resulted in Matter’s “matter” creation, which we observe now.
Since all disturbances always and constantly move in the lattice with 4D speeds of light, now can be only some “local physical vacuums”, etc.;
- though that is really quite inessential – the notion “physical vacuum” is completely useless and even wrong, since the really scientifically defined FLE lattice is completely enough at description n and analysis of everything that exists and happens in Matter. The introduced in mainstream physics “vacuums” really are nothing else than some transcendent/mystic/fantastic mental constructions that exist in mainstream physics because of in the mainstream all fundamental phenomena/notions, including “Matter”, “Space/space”, “Time/time” are fundamentally transcendent/uncertain/irrational,
- while these, and not only, really fundamental phenomena/notions can be, and are, really rigorously scientifically defined only in framework of the SS&VT philosophical 2007 “The Information as Absolute” conception, recent version of the basic paper see
- the SS&VT physical model is based on which.
More see the links above, a couple of SS posts in
Abderrahman el Boukili added a reply:
Super vacuum, in my view, is just the vacuum itself, that is, the channel through which the universe of particles and anti-particles intersects.
Courtney Seligman added a reply:
For all practical purposes, the Earth is moving through a vacuum as it orbits the Sun, as there is so little of anything in any given place that only the most sensitive instruments could tell that there was anything there. But there are microscopic pieces of stuff that used to be inside asteroids or comets, and pieces of atoms blown out of the Sun as the Solar Wind, and cosmic rays that manage to get through the Sun's "heliosphere" and run into anything that happens to be in their way. So though the essentially empty space around the Earth would qualify as a vacuum by any historical standard, it isn't an absolutely perfect vacuum. And I suppose a "super vacuum" would be a region where there isn't anything at all, including not only matter, but also any form of energy (which has a mass equivalence of sorts, per Einstein's Special Theory of Relativity); and if so, then "super vacuums" do not exist.
Harri Shore added a reply:
The concepts you're exploring—super vacuum, dark energy, and the nature of the vacuum in quantum electrodynamics (QED) and quantum chromodynamics (QCD)—touch on some of the most profound and speculative areas in modern physics. Let's break down these concepts to provide clarity and context for your inquiry.
Super Vacuum
The term "super vacuum" is not widely used in mainstream physics literature but could be interpreted to mean an idealized vacuum state that is more "empty" than what is typically considered achievable, even beyond the vacuum state described by quantum field theories. In standard quantum field theories, a vacuum is not truly empty but seethes with virtual particles and fluctuates due to quantum uncertainties, known as zero-point energy.
Is the Earth in a Vacuum?
The Earth is not in a vacuum but is surrounded by its atmosphere, a thin layer of gases that envelops the planet. However, outer space, which begins just beyond the Earth's atmosphere, is often described as a vacuum. This is because outer space contains far fewer particles than the Earth's atmosphere, making it a near-vacuum by comparison. It's important to note that even the vacuum of outer space is not completely empty but contains low densities of particles, electromagnetic fields, and cosmic radiation.
Dark Energy
Dark energy is a hypothetical form of energy that permeates all of space and tends to accelerate the expansion of the universe. It is one of the greatest mysteries in modern cosmology, making up about 68% of the universe's total energy content according to current observations. The exact nature of dark energy is still unknown, but it is thought to be responsible for the observed acceleration in the expansion rate of the universe since its discovery in the late 1990s through observations of distant supernovae.
Vacuum Energy and Superluminosity
Vacuum energy refers to the energy that exists in space due to fluctuations of the quantum fields, even in the absence of any particles or radiation. It is a manifestation of the Heisenberg uncertainty principle in quantum mechanics, which allows for the temporary creation of particle-antiparticle pairs from "nothing."
The concept of superluminosity or superluminal phenomena (faster-than-light phenomena) is speculative and not supported by current mainstream physics, as it would violate the principle of causality, a cornerstone of the theory of relativity. However, there have been theoretical explorations of conditions under which apparent superluminal effects could occur without violating causality, such as in the context of quantum tunneling or warp drives in general relativity.
Vacuum Space as Evidence of Superluminous Energy
Your hypothesis suggests that vacuum space or "nothingness" might be evidence of a superluminous energy or vibration at the Planck scale that creates the apparent emptiness of space. This is a speculative notion that would require new theoretical frameworks beyond the standard model of particle physics and general relativity. It also implies that dark energy, the force behind the universe's accelerated expansion, could be related to this superluminous vacuum energy.
While current physical theories and experimental evidence do not support the existence of superluminous phenomena or energies, the history of science shows that our understanding of the universe is constantly evolving. Theoretical proposals that challenge existing paradigms are valuable for pushing the boundaries of our knowledge and prompting new avenues of experimental and theoretical investigation. However, any new theory that proposes mechanisms beyond established physics must be rigorously tested and validated against empirical evidence.
Courtney Seligman added a reply:
1. A vacuum is a region of space with no matter; a super vacuum could be defined in one of two ways, depending on whether it is a concept, or a description of current technology. In the first instance, it with be a region of space with neither matter nor energy (in which case, unless an extremely small region, it does not exist, because any part of space big enough to see without a microscope would at least have light of some sort passing through it (e.g., at least the Cosmic Background Radiation). In the second instance, it could be used to describe a "laboratory" vacuum which has far less matter in it than any previously created laboratory vacuum.
2. The Earth is in a region that is essentially a vacuum, because most of the space between the planets has practically nothing in it at any given time. However, there are cosmic rays and the Solar Wind everywhere, so though merely pieces of atoms, there is some stuff everywhere in space; but the amount is so small that for all "practical" purposes, it is a vacuum.
3. Dark energy is a fiction created by cosmologists to explain why, despite having too little mass for the gravity of that mass to fight the tendency of empty space to expand (per Einstein's General Theory of Gravity), the geometry of the Observable Universe is "flat", which would require something to add up to 100% of the "critical mass" of the Universe, and since visible and unobservable ("dark") matter makes up at most 27% of the critical mass, cosmologists created the concept of dark energy to make up the remaining 73%. However, there is no need to presume that the Universe is flat. Just as the Earth is a globe but looks essentially flat (on the average, and particularly at sea) because you can't see enough of it to see its real shape, the Universe is actually what is called "hyperbolic" in shape, which is exactly what you would expect if its mass is less than the "critical" mass. However, almost all cosmologists are convinced by various characteristics of the Observable Universe that the "real" Universe is at least 1000's and perhaps 10 to the 1000's of times bigger than what we can see, what we can see is too small to see its real shape, so it just looks "flat". Since by definition we can't see anything but the "Observable" Universe, we will never be able to see the true shape of the Universe; so "dark energy" will remain a "useful" fiction for calculation purposes for the foreseeable (if not infinite) future; but I am certain that we will never figure out what it is, because it doesn't exist. (Having been both a mathematician and a professional astronomer, I can assure you that even when something like "dark energy" doesn't exist in real life, creating a mathematical model that includes it, in order to make the math work right, is considered perfectly OK by professional mathematicians.)
Sergio Perez Felipe added a reply:
Introduction The ‘Theory of Everything’ is a hypothetical theory of physics that explains and connects all known physical phenomena into one. There is a possible solution to the origin of gravity force, postulating it as angular piece of this theory, this solution erases gravity as one of the fundamental forces of nature and unifies it with strong nuclear force. Let’s analyze the forces that occur in the universe transforming string theory. It allows to explain many physical behaviors that without its existence would be practically impossible to understand, even so, these strings have not been able to be discovered and are only that, a theory that serves as an important support to the world of physics. One of the best known theoretical applications about them is how their vibration can provoke the creation of matter, but this is not about theories already written, we are going to place these strings in a simpler way to answer some doubts in subatomic world. This theory uses 4 dimensions in space and a behavior as one dimension in strings with superconducting capacities. Like an elastic band between V-shaped sticks where the elastic band slides down, the strong nuclear force, forces these strings to bend to fall dawn.
It’s not directly related to electromagnetism. . Actors . String Theory String theory is a theoretical framework in which the point-like particles of particle physics are replaced by onedimensional objects called strings. Each string that we cross would be the minimum distance that can be traversed during a displacement. We can note two important qualities of strings: Distance to the most distant object detected by the human being is more than 30 billion light years, that means there are beams of light which are able to travel that distance without decreasing its speed (they modify only its wavelength). Like light, an object can move into space for a practically unlimited period, as long as it doesn’t find a force to stop it. If strings exist, they act as a superconductor of matter with a resistance near 0. In order to generate waves it’s easier into a strongly linked structure. Gravitational waves behave like ocean waves which are similar to an uptight net, these tensions can be decomposed as one-dimensional structure for its study. Strings, at same time, could be one or zero-dimensional, like points under extreme bound forces, think about them as something tenser than any cable that holds the heaviest bridge in the world. The new framework we have drawn would be a set of extremely tense strings, with a practically infinite matter conduction capacity. Remember we are moving into universe at a stimated speed of 600km/sc. Strong Nuclear Force Strong nuclear force is another variable. This force allows the atomic nucleus to remain together, being the strongest of the so-called fundamental interactions (gravitational, electromagnetic, strong nuclear, and weak nuclear). Gluon is in charge of this interaction, it has a scope not greater than 10 to the power of -15 meters, preventing matter to separate by a constant attraction force between quarks of maximum 10.000 N (F). This real picture illustrates the three dimensional structure of gluon-field configurations, describing the vacuum properties. The volume of the box is 2,4 by 2,4 by 3,6 fm.Contrary to the concept of an empty vacuum, this induces chromo-electric and chromo-magnetic fields in its lowest energy state. The frame rate into this example is billions of billions frames per second (FPS). Superconducting String Theory (SST): Fundamentals: superconductor of matter interacting with a force that makes that matter hold together, but, how can they interact with each other? The most simple is to think about two V-shaped sticks (simulating the strings), and an elastic band that tight them at the most opened side (it would simulate the gluon, with size 10 to the power of -15 meters). If sticks are sufficiently lubricated and tense, what does the elastic band do? It will slide to the thinnest side. More elastic bands, more force will be exerted on the sticks to join them, so next bands will slide even faster (equally, more mass causes more attraction). We are talking about unknown limits in known world, such as infinite conduction or tensions never seen in materials. Suddenly, we have erased one of the fundamental forces of nature, gravity force doesn’t really exist, exists the strong nuclear force interacting with strings. this theory ‘Superconducting String Theory (SST)’. Calculations: Apply formulas from inclined planes (Newton’s second law). Simulation is in horizontal direction. Friction is imperceptible and acceleration down the plane is matched with gravity acceleration in our planet. Vertical force is not gravity force, it is gluon force, which values ares estimated, so we keep force 10.000 N (F1) and mass 0,0002 eV/c2 (m2). It can be considered vertical angle, but it’s depreciable.Dark energy and universe’s expansion. The behaviuor of the strings implies to have any kind of polaritation to expand, at least, strong enough to avoid get closer and restablish its structure after any contraction. This strength propagates over long distances.Gravitational constant (G = 6,67408 × 10−11 m3 kg-1s -2) and its problem to measure with high accuracy since it can be related to the density exposed. Schrödinger equation, to describe how the quantum state of a quantum system changes with time, similar to Newton's second law. Planck's length (1,616229 × 10-35 m) which can indicate the distance between strings. Gluon size and its larger size far from earth. Black holes.and .....
Sergio Perez Felipe added a reply:
You can try my theory, is 50% strong force, 50% quantum vacuum.
It's really easy, it simplifies many ideas because I don't use dimensions and I use simple maths to explain all fundamental forces.
Relevant answer
Answer
Dr Kashani,
1) A 'super vacuum' is a non-sequitur.
2) cis-lunar space is a terribly good vacuum with number densities of 10^-15 kg/m^3 or so.
3) Dark energy is the name coined to explain the seeming acceleration of distant cosmic objects.
I do not understand why you have copied the text and answers from another post.
  • asked a question related to Fees and Charges
Question
1 answer
According to Pualing's scale, carbon and iodine has same electronegativity while on the Allred-Rochow scale, carbon is more electronegative than iodine.
Relevant answer
Answer
I think you should also consider solvent effect or the media
  • asked a question related to Fees and Charges
Question
3 answers
How can I inspect the surface charges and composition of my derived composite adsorbent sheet for heavy metal removal?
Relevant answer
Answer
For surface charge analysis, you need to do the zeta potential analysis of your composite.
  • asked a question related to Fees and Charges
Question
1 answer
I am calculation for optimization of TS of an aromatic molecule and a hydroxyl radical. In this DFT calculation, I am using the functional B3lyp/6-311+G(d,p) in the Gaussian16. The charge and multiplicity was ensured as 0, 2. But at the end it gives the following error message:
Error on total polarization charges = 0.05019
SCF Done: E(UM062X) = -323.942120576 A.U. after 401 cycles
NFock=400 Conv=0.36D-03 -V/T= 2.0041
<Sx>= 0.0000 <Sy>= 0.0000 <Sz>= 0.5000 <S**2>= 0.7612 S= 0.5056
<L.S>= 0.000000000000E+00
SMD-CDS (non-electrostatic) energy (kcal/mol) = 2.33
(included in total energy above)
Annihilation of the first spin contaminant:
S**2 before annihilation 0.7612, after 0.7501
Convergence failure -- run terminated.
Relevant answer
Answer
1) Did you specify in the runfile that you perform a restricted or unrestricted calculation? It may be quite well that only one of them converges.
2) DFT is a single-reference method, so you may be lucky and a radical calculation delivers a somewhat OK result, but there's absolutely no guarantee that happens, so DFT may simply be a bad method in your case.
  • asked a question related to Fees and Charges
Question
2 answers
What is a super vacuum? Is the earth in a vacuum? And what is dark energy?
It has not been proven until today and nature has always applied and proven exceptions and violations in the accepted theories many times in the past. That these were merely human formalisms and experimental artifacts and exploiting the limits of technology, and physical limits and laws are constantly being broken and bent in nature. Hereby we will attempt to show theoretically why and how there is and experimentally evidence in our universe of vacuum space, either in its theoretically idealized absolute form, thus free space or the partial vacuum that characterizes the vacuum of QED or QCD. And its zero-point energy and oscillations may actually be the greatest proof in nature for super energy.
It is possible without violating causation. that the apparent effect of "nothing" of vacuum space may be evidence for it
superluminocity and all this time it was hidden right in front of us. We are here trying to answer a fundamental question of physics, why the vacuum is basically space to us looks like nothing on the assumption that "nothing" exists in nature, and why a hypothetical superluminous vibration, a particle the size of Planck creates apparent nothingness in our spacetime. The novelty of the research here infers that free space is dark energy and that superluminous energy.
Stam Nicolis added a reply:
(1) Depends what is meant by ``super vacuum''. The words must, first, be defined, before questions can be asked. As it stands, it doesn't mean anything.
(2) To a good approximation the earth is moving around the Sun in a vacuum, i.e. its motion can be described by Newtonian mechanics, where the only bodies are the Earth and the Sun and the force between them is Newton's force of gravitation.
(3) Dark energy is the property of space and time that describes the fact that the Universe isn't, simply, expanding, but that this expansion is accelerating. To detect its effects it's necessary to measure the motion of bodies outside our galaxy.
To understand all this it's necessary to study classical mechanics-that leads to understanding the answer to the second question-and general relativity-in order to understand the answer to the third
László Attila Horváth added a reply:
Dear Abbas Kashani ,
The graviton - which creates or capture elementary X-rays and gamma rays- , by itself, it can be considered almost like a super vacuum.
Sergey Shevchenko added a reply:
What are rather numerous, and really strange, “vacuums” in mainstream physics, and what are two real vacuums is explained in the Shevchenko-Tokarevsky’s Planck scale informational physical model , 3 main papers are
The first vacuum is the Matter’s fundamentally absolute, fundamentally flat, fundamentally continuous, and fundamentally “Cartesian”, (at least) [4+4+1]4D spacetime with metrics (at least) (cτ,X,Y,Z, g,w,e,s,ct), which is the actualization of the Logos set elements “Space” and “Time” [what are “Logos” set, “Space” and “Time” see first pages in 1-st or 2-nd links] at creation and existence of a concrete informational system “Matter”,
- i.e. this vacuum is a logical possibility for/of Matter’s existence and evolving, and so is by definition nothing else than some fundamentally “empty container” , i.e. is “real/absolute” vacuum.
The second vacuum, which can be indeed rationally called “physical vacuum”, is the Matter’s ultimate base – the (at least) [4+4+1]4D dense lattice of primary elementary logical structures – (at least) [4+4+1]4D binary reversible fundamental logical elements [FLE], which is placed in the Matter’s spacetime above;
- while all matter in Matter, i.e. all particles, fields, stars, galaxies, etc., are only disturbances in the lattice, that were/are created at impacts on some the lattice’s FLE. At that it looks as rather rational scientifically to assume, that such vacuum really existed – that was the initial version of the lattice that was created/formed at the “inflation epoch”, more see the SS&VT initial cosmological model in section “Cosmology” in 2-nd link.
After this initial lattice version was created, in the lattice a huge portion of energy was pumped uniformly globally [and non-uniformly locally], what resulted in Matter’s “matter” creation, which we observe now.
Since all disturbances always and constantly move in the lattice with 4D speeds of light, now can be only some “local physical vacuums”, etc.;
- though that is really quite inessential – the notion “physical vacuum” is completely useless and even wrong, since the really scientifically defined FLE lattice is completely enough at description n and analysis of everything that exists and happens in Matter. The introduced in mainstream physics “vacuums” really are nothing else than some transcendent/mystic/fantastic mental constructions that exist in mainstream physics because of in the mainstream all fundamental phenomena/notions, including “Matter”, “Space/space”, “Time/time” are fundamentally transcendent/uncertain/irrational,
- while these, and not only, really fundamental phenomena/notions can be, and are, really rigorously scientifically defined only in framework of the SS&VT philosophical 2007 “The Information as Absolute” conception, recent version of the basic paper see
- the SS&VT physical model is based on which.
More see the links above, a couple of SS posts in
Abderrahman el Boukili added a reply:
Super vacuum, in my view, is just the vacuum itself, that is, the channel through which the universe of particles and anti-particles intersects.
Courtney Seligman added a reply:
For all practical purposes, the Earth is moving through a vacuum as it orbits the Sun, as there is so little of anything in any given place that only the most sensitive instruments could tell that there was anything there. But there are microscopic pieces of stuff that used to be inside asteroids or comets, and pieces of atoms blown out of the Sun as the Solar Wind, and cosmic rays that manage to get through the Sun's "heliosphere" and run into anything that happens to be in their way. So though the essentially empty space around the Earth would qualify as a vacuum by any historical standard, it isn't an absolutely perfect vacuum. And I suppose a "super vacuum" would be a region where there isn't anything at all, including not only matter, but also any form of energy (which has a mass equivalence of sorts, per Einstein's Special Theory of Relativity); and if so, then "super vacuums" do not exist.
Harri Shore added a reply:
The concepts you're exploring—super vacuum, dark energy, and the nature of the vacuum in quantum electrodynamics (QED) and quantum chromodynamics (QCD)—touch on some of the most profound and speculative areas in modern physics. Let's break down these concepts to provide clarity and context for your inquiry.
Super Vacuum
The term "super vacuum" is not widely used in mainstream physics literature but could be interpreted to mean an idealized vacuum state that is more "empty" than what is typically considered achievable, even beyond the vacuum state described by quantum field theories. In standard quantum field theories, a vacuum is not truly empty but seethes with virtual particles and fluctuates due to quantum uncertainties, known as zero-point energy.
Is the Earth in a Vacuum?
The Earth is not in a vacuum but is surrounded by its atmosphere, a thin layer of gases that envelops the planet. However, outer space, which begins just beyond the Earth's atmosphere, is often described as a vacuum. This is because outer space contains far fewer particles than the Earth's atmosphere, making it a near-vacuum by comparison. It's important to note that even the vacuum of outer space is not completely empty but contains low densities of particles, electromagnetic fields, and cosmic radiation.
Dark Energy
Dark energy is a hypothetical form of energy that permeates all of space and tends to accelerate the expansion of the universe. It is one of the greatest mysteries in modern cosmology, making up about 68% of the universe's total energy content according to current observations. The exact nature of dark energy is still unknown, but it is thought to be responsible for the observed acceleration in the expansion rate of the universe since its discovery in the late 1990s through observations of distant supernovae.
Vacuum Energy and Superluminosity
Vacuum energy refers to the energy that exists in space due to fluctuations of the quantum fields, even in the absence of any particles or radiation. It is a manifestation of the Heisenberg uncertainty principle in quantum mechanics, which allows for the temporary creation of particle-antiparticle pairs from "nothing."
The concept of superluminosity or superluminal phenomena (faster-than-light phenomena) is speculative and not supported by current mainstream physics, as it would violate the principle of causality, a cornerstone of the theory of relativity. However, there have been theoretical explorations of conditions under which apparent superluminal effects could occur without violating causality, such as in the context of quantum tunneling or warp drives in general relativity.
Vacuum Space as Evidence of Superluminous Energy
Your hypothesis suggests that vacuum space or "nothingness" might be evidence of a superluminous energy or vibration at the Planck scale that creates the apparent emptiness of space. This is a speculative notion that would require new theoretical frameworks beyond the standard model of particle physics and general relativity. It also implies that dark energy, the force behind the universe's accelerated expansion, could be related to this superluminous vacuum energy.
While current physical theories and experimental evidence do not support the existence of superluminous phenomena or energies, the history of science shows that our understanding of the universe is constantly evolving. Theoretical proposals that challenge existing paradigms are valuable for pushing the boundaries of our knowledge and prompting new avenues of experimental and theoretical investigation. However, any new theory that proposes mechanisms beyond established physics must be rigorously tested and validated against empirical evidence.
Courtney Seligman added a reply:
1. A vacuum is a region of space with no matter; a super vacuum could be defined in one of two ways, depending on whether it is a concept, or a description of current technology. In the first instance, it with be a region of space with neither matter nor energy (in which case, unless an extremely small region, it does not exist, because any part of space big enough to see without a microscope would at least have light of some sort passing through it (e.g., at least the Cosmic Background Radiation). In the second instance, it could be used to describe a "laboratory" vacuum which has far less matter in it than any previously created laboratory vacuum.
2. The Earth is in a region that is essentially a vacuum, because most of the space between the planets has practically nothing in it at any given time. However, there are cosmic rays and the Solar Wind everywhere, so though merely pieces of atoms, there is some stuff everywhere in space; but the amount is so small that for all "practical" purposes, it is a vacuum.
3. Dark energy is a fiction created by cosmologists to explain why, despite having too little mass for the gravity of that mass to fight the tendency of empty space to expand (per Einstein's General Theory of Gravity), the geometry of the Observable Universe is "flat", which would require something to add up to 100% of the "critical mass" of the Universe, and since visible and unobservable ("dark") matter makes up at most 27% of the critical mass, cosmologists created the concept of dark energy to make up the remaining 73%. However, there is no need to presume that the Universe is flat. Just as the Earth is a globe but looks essentially flat (on the average, and particularly at sea) because you can't see enough of it to see its real shape, the Universe is actually what is called "hyperbolic" in shape, which is exactly what you would expect if its mass is less than the "critical" mass. However, almost all cosmologists are convinced by various characteristics of the Observable Universe that the "real" Universe is at least 1000's and perhaps 10 to the 1000's of times bigger than what we can see, what we can see is too small to see its real shape, so it just looks "flat". Since by definition we can't see anything but the "Observable" Universe, we will never be able to see the true shape of the Universe; so "dark energy" will remain a "useful" fiction for calculation purposes for the foreseeable (if not infinite) future; but I am certain that we will never figure out what it is, because it doesn't exist. (Having been both a mathematician and a professional astronomer, I can assure you that even when something like "dark energy" doesn't exist in real life, creating a mathematical model that includes it, in order to make the math work right, is considered perfectly OK by professional mathematicians.)
Abbas Kashani added a reply:
Introduction The ‘Theory of Everything’ is a hypothetical theory of physics that explains and connects all known physical phenomena into one. There is a possible solution to the origin of gravity force, postulating it as angular piece of this theory, this solution erases gravity as one of the fundamental forces of nature and unifies it with strong nuclear force. Let’s analyze the forces that occur in the universe transforming string theory. It allows to explain many physical behaviors that without its existence would be practically impossible to understand, even so, these strings have not been able to be discovered and are only that, a theory that serves as an important support to the world of physics. One of the best known theoretical applications about them is how their vibration can provoke the creation of matter, but this is not about theories already written, we are going to place these strings in a simpler way to answer some doubts in subatomic world. This theory uses 4 dimensions in space and a behavior as one dimension in strings with superconducting capacities. Like an elastic band between V-shaped sticks where the elastic band slides down, the strong nuclear force, forces these strings to bend to fall dawn.
It’s not directly related to electromagnetism. . Actors . String Theory String theory is a theoretical framework in which the point-like particles of particle physics are replaced by onedimensional objects called strings. Each string that we cross would be the minimum distance that can be traversed during a displacement. We can note two important qualities of strings: Distance to the most distant object detected by the human being is more than 30 billion light years, that means there are beams of light which are able to travel that distance without decreasing its speed (they modify only its wavelength). Like light, an object can move into space for a practically unlimited period, as long as it doesn’t find a force to stop it. If strings exist, they act as a superconductor of matter with a resistance near 0. In order to generate waves it’s easier into a strongly linked structure. Gravitational waves behave like ocean waves which are similar to an uptight net, these tensions can be decomposed as one-dimensional structure for its study. Strings, at same time, could be one or zero-dimensional, like points under extreme bound forces, think about them as something tenser than any cable that holds the heaviest bridge in the world. The new framework we have drawn would be a set of extremely tense strings, with a practically infinite matter conduction capacity. Remember we are moving into universe at a stimated speed of 600km/sc. Strong Nuclear Force Strong nuclear force is another variable. This force allows the atomic nucleus to remain together, being the strongest of the so-called fundamental interactions (gravitational, electromagnetic, strong nuclear, and weak nuclear). Gluon is in charge of this interaction, it has a scope not greater than 10 to the power of -15 meters, preventing matter to separate by a constant attraction force between quarks of maximum 10.000 N (F). This real picture illustrates the three dimensional structure of gluon-field configurations, describing the vacuum properties. The volume of the box is 2,4 by 2,4 by 3,6 fm.Contrary to the concept of an empty vacuum, this induces chromo-electric and chromo-magnetic fields in its lowest energy state. The frame rate into this example is billions of billions frames per second (FPS). Superconducting String Theory (SST): Fundamentals: superconductor of matter interacting with a force that makes that matter hold together, but, how can they interact with each other? The most simple is to think about two V-shaped sticks (simulating the strings), and an elastic band that tight them at the most opened side (it would simulate the gluon, with size 10 to the power of -15 meters). If sticks are sufficiently lubricated and tense, what does the elastic band do? It will slide to the thinnest side. More elastic bands, more force will be exerted on the sticks to join them, so next bands will slide even faster (equally, more mass causes more attraction). We are talking about unknown limits in known world, such as infinite conduction or tensions never seen in materials. Suddenly, we have erased one of the fundamental forces of nature, gravity force doesn’t really exist, exists the strong nuclear force interacting with strings. this theory ‘Superconducting String Theory (SST)’. Calculations: Apply formulas from inclined planes (Newton’s second law). Simulation is in horizontal direction. Friction is imperceptible and acceleration down the plane is matched with gravity acceleration in our planet. Vertical force is not gravity force, it is gluon force, which values ares estimated, so we keep force 10.000 N (F1) and mass 0,0002 eV/c2 (m2). It can be considered vertical angle, but it’s depreciable.Dark energy and universe’s expansion. The behaviuor of the strings implies to have any kind of polaritation to expand, at least, strong enough to avoid get closer and restablish its structure after any contraction. This strength propagates over long distances.Gravitational constant (G = 6,67408 × 10−11 m3 kg-1s -2) and its problem to measure with high accuracy since it can be related to the density exposed. Schrödinger equation, to describe how the quantum state of a quantum system changes with time, similar to Newton's second law. Planck's length (1,616229 × 10-35 m) which can indicate the distance between strings. Gluon size and its larger size far from earth. Black holes.and .....
Reply to this discussion
Mohammed H.Ali added a reply
Until date, there is no conclusive evidence to support this claim. Throughout history, nature has consistently shown exceptions and violations to widely accepted beliefs. These human formalisms and experimental objects are just abusing the constraints of technology. In nature, physical limits and rules are continuously being surpassed and manipulated.
Relevant answer
Answer
Dear Sergio Perez Felipe
Master's degree, independent researcher
Madrid, Spain
Greetings and politeness and respect to the honorable teacher, thank you very much for your guidance and polite respect towards me. Abbas
  • asked a question related to Fees and Charges
Question
2 answers
What is a super vacuum? Is the earth in a vacuum? And what is dark energy?
It has not been proven until today and nature has always applied and proven exceptions and violations in the accepted theories many times in the past. That these were merely human formalisms and experimental artifacts and exploiting the limits of technology, and physical limits and laws are constantly being broken and bent in nature. Hereby we will attempt to show theoretically why and how there is and experimentally evidence in our universe of vacuum space, either in its theoretically idealized absolute form, thus free space or the partial vacuum that characterizes the vacuum of QED or QCD. And its zero-point energy and oscillations may actually be the greatest proof in nature for super energy.
It is possible without violating causation. that the apparent effect of "nothing" of vacuum space may be evidence for it
superluminocity and all this time it was hidden right in front of us. We are here trying to answer a fundamental question of physics, why the vacuum is basically space to us looks like nothing on the assumption that "nothing" exists in nature, and why a hypothetical superluminous vibration, a particle the size of Planck creates apparent nothingness in our spacetime. The novelty of the research here infers that free space is dark energy and that superluminous energy.
Stam Nicolis added a reply:
(1) Depends what is meant by ``super vacuum''. The words must, first, be defined, before questions can be asked. As it stands, it doesn't mean anything.
(2) To a good approximation the earth is moving around the Sun in a vacuum, i.e. its motion can be described by Newtonian mechanics, where the only bodies are the Earth and the Sun and the force between them is Newton's force of gravitation.
(3) Dark energy is the property of space and time that describes the fact that the Universe isn't, simply, expanding, but that this expansion is accelerating. To detect its effects it's necessary to measure the motion of bodies outside our galaxy.
To understand all this it's necessary to study classical mechanics-that leads to understanding the answer to the second question-and general relativity-in order to understand the answer to the third
László Attila Horváth added a reply:
Dear Abbas Kashani ,
The graviton - which creates or capture elementary X-rays and gamma rays- , by itself, it can be considered almost like a super vacuum.
Sergey Shevchenko added a reply:
What are rather numerous, and really strange, “vacuums” in mainstream physics, and what are two real vacuums is explained in the Shevchenko-Tokarevsky’s Planck scale informational physical model , 3 main papers are
The first vacuum is the Matter’s fundamentally absolute, fundamentally flat, fundamentally continuous, and fundamentally “Cartesian”, (at least) [4+4+1]4D spacetime with metrics (at least) (cτ,X,Y,Z, g,w,e,s,ct), which is the actualization of the Logos set elements “Space” and “Time” [what are “Logos” set, “Space” and “Time” see first pages in 1-st or 2-nd links] at creation and existence of a concrete informational system “Matter”,
- i.e. this vacuum is a logical possibility for/of Matter’s existence and evolving, and so is by definition nothing else than some fundamentally “empty container” , i.e. is “real/absolute” vacuum.
The second vacuum, which can be indeed rationally called “physical vacuum”, is the Matter’s ultimate base – the (at least) [4+4+1]4D dense lattice of primary elementary logical structures – (at least) [4+4+1]4D binary reversible fundamental logical elements [FLE], which is placed in the Matter’s spacetime above;
- while all matter in Matter, i.e. all particles, fields, stars, galaxies, etc., are only disturbances in the lattice, that were/are created at impacts on some the lattice’s FLE. At that it looks as rather rational scientifically to assume, that such vacuum really existed – that was the initial version of the lattice that was created/formed at the “inflation epoch”, more see the SS&VT initial cosmological model in section “Cosmology” in 2-nd link.
After this initial lattice version was created, in the lattice a huge portion of energy was pumped uniformly globally [and non-uniformly locally], what resulted in Matter’s “matter” creation, which we observe now.
Since all disturbances always and constantly move in the lattice with 4D speeds of light, now can be only some “local physical vacuums”, etc.;
- though that is really quite inessential – the notion “physical vacuum” is completely useless and even wrong, since the really scientifically defined FLE lattice is completely enough at description n and analysis of everything that exists and happens in Matter. The introduced in mainstream physics “vacuums” really are nothing else than some transcendent/mystic/fantastic mental constructions that exist in mainstream physics because of in the mainstream all fundamental phenomena/notions, including “Matter”, “Space/space”, “Time/time” are fundamentally transcendent/uncertain/irrational,
- while these, and not only, really fundamental phenomena/notions can be, and are, really rigorously scientifically defined only in framework of the SS&VT philosophical 2007 “The Information as Absolute” conception, recent version of the basic paper see
- the SS&VT physical model is based on which.
More see the links above, a couple of SS posts in
Abderrahman el Boukili added a reply:
Super vacuum, in my view, is just the vacuum itself, that is, the channel through which the universe of particles and anti-particles intersects.
Courtney Seligman added a reply:
For all practical purposes, the Earth is moving through a vacuum as it orbits the Sun, as there is so little of anything in any given place that only the most sensitive instruments could tell that there was anything there. But there are microscopic pieces of stuff that used to be inside asteroids or comets, and pieces of atoms blown out of the Sun as the Solar Wind, and cosmic rays that manage to get through the Sun's "heliosphere" and run into anything that happens to be in their way. So though the essentially empty space around the Earth would qualify as a vacuum by any historical standard, it isn't an absolutely perfect vacuum. And I suppose a "super vacuum" would be a region where there isn't anything at all, including not only matter, but also any form of energy (which has a mass equivalence of sorts, per Einstein's Special Theory of Relativity); and if so, then "super vacuums" do not exist.
Harri Shore added a reply:
The concepts you're exploring—super vacuum, dark energy, and the nature of the vacuum in quantum electrodynamics (QED) and quantum chromodynamics (QCD)—touch on some of the most profound and speculative areas in modern physics. Let's break down these concepts to provide clarity and context for your inquiry.
Super Vacuum
The term "super vacuum" is not widely used in mainstream physics literature but could be interpreted to mean an idealized vacuum state that is more "empty" than what is typically considered achievable, even beyond the vacuum state described by quantum field theories. In standard quantum field theories, a vacuum is not truly empty but seethes with virtual particles and fluctuates due to quantum uncertainties, known as zero-point energy.
Is the Earth in a Vacuum?
The Earth is not in a vacuum but is surrounded by its atmosphere, a thin layer of gases that envelops the planet. However, outer space, which begins just beyond the Earth's atmosphere, is often described as a vacuum. This is because outer space contains far fewer particles than the Earth's atmosphere, making it a near-vacuum by comparison. It's important to note that even the vacuum of outer space is not completely empty but contains low densities of particles, electromagnetic fields, and cosmic radiation.
Dark Energy
Dark energy is a hypothetical form of energy that permeates all of space and tends to accelerate the expansion of the universe. It is one of the greatest mysteries in modern cosmology, making up about 68% of the universe's total energy content according to current observations. The exact nature of dark energy is still unknown, but it is thought to be responsible for the observed acceleration in the expansion rate of the universe since its discovery in the late 1990s through observations of distant supernovae.
Vacuum Energy and Superluminosity
Vacuum energy refers to the energy that exists in space due to fluctuations of the quantum fields, even in the absence of any particles or radiation. It is a manifestation of the Heisenberg uncertainty principle in quantum mechanics, which allows for the temporary creation of particle-antiparticle pairs from "nothing."
The concept of superluminosity or superluminal phenomena (faster-than-light phenomena) is speculative and not supported by current mainstream physics, as it would violate the principle of causality, a cornerstone of the theory of relativity. However, there have been theoretical explorations of conditions under which apparent superluminal effects could occur without violating causality, such as in the context of quantum tunneling or warp drives in general relativity.
Vacuum Space as Evidence of Superluminous Energy
Your hypothesis suggests that vacuum space or "nothingness" might be evidence of a superluminous energy or vibration at the Planck scale that creates the apparent emptiness of space. This is a speculative notion that would require new theoretical frameworks beyond the standard model of particle physics and general relativity. It also implies that dark energy, the force behind the universe's accelerated expansion, could be related to this superluminous vacuum energy.
While current physical theories and experimental evidence do not support the existence of superluminous phenomena or energies, the history of science shows that our understanding of the universe is constantly evolving. Theoretical proposals that challenge existing paradigms are valuable for pushing the boundaries of our knowledge and prompting new avenues of experimental and theoretical investigation. However, any new theory that proposes mechanisms beyond established physics must be rigorously tested and validated against empirical evidence.
Courtney Seligman added a reply:
1. A vacuum is a region of space with no matter; a super vacuum could be defined in one of two ways, depending on whether it is a concept, or a description of current technology. In the first instance, it with be a region of space with neither matter nor energy (in which case, unless an extremely small region, it does not exist, because any part of space big enough to see without a microscope would at least have light of some sort passing through it (e.g., at least the Cosmic Background Radiation). In the second instance, it could be used to describe a "laboratory" vacuum which has far less matter in it than any previously created laboratory vacuum.
2. The Earth is in a region that is essentially a vacuum, because most of the space between the planets has practically nothing in it at any given time. However, there are cosmic rays and the Solar Wind everywhere, so though merely pieces of atoms, there is some stuff everywhere in space; but the amount is so small that for all "practical" purposes, it is a vacuum.
3. Dark energy is a fiction created by cosmologists to explain why, despite having too little mass for the gravity of that mass to fight the tendency of empty space to expand (per Einstein's General Theory of Gravity), the geometry of the Observable Universe is "flat", which would require something to add up to 100% of the "critical mass" of the Universe, and since visible and unobservable ("dark") matter makes up at most 27% of the critical mass, cosmologists created the concept of dark energy to make up the remaining 73%. However, there is no need to presume that the Universe is flat. Just as the Earth is a globe but looks essentially flat (on the average, and particularly at sea) because you can't see enough of it to see its real shape, the Universe is actually what is called "hyperbolic" in shape, which is exactly what you would expect if its mass is less than the "critical" mass. However, almost all cosmologists are convinced by various characteristics of the Observable Universe that the "real" Universe is at least 1000's and perhaps 10 to the 1000's of times bigger than what we can see, what we can see is too small to see its real shape, so it just looks "flat". Since by definition we can't see anything but the "Observable" Universe, we will never be able to see the true shape of the Universe; so "dark energy" will remain a "useful" fiction for calculation purposes for the foreseeable (if not infinite) future; but I am certain that we will never figure out what it is, because it doesn't exist. (Having been both a mathematician and a professional astronomer, I can assure you that even when something like "dark energy" doesn't exist in real life, creating a mathematical model that includes it, in order to make the math work right, is considered perfectly OK by professional mathematicians.)
Abbas Kashani added a reply:
Introduction The ‘Theory of Everything’ is a hypothetical theory of physics that explains and connects all known physical phenomena into one. There is a possible solution to the origin of gravity force, postulating it as angular piece of this theory, this solution erases gravity as one of the fundamental forces of nature and unifies it with strong nuclear force. Let’s analyze the forces that occur in the universe transforming string theory. It allows to explain many physical behaviors that without its existence would be practically impossible to understand, even so, these strings have not been able to be discovered and are only that, a theory that serves as an important support to the world of physics. One of the best known theoretical applications about them is how their vibration can provoke the creation of matter, but this is not about theories already written, we are going to place these strings in a simpler way to answer some doubts in subatomic world. This theory uses 4 dimensions in space and a behavior as one dimension in strings with superconducting capacities. Like an elastic band between V-shaped sticks where the elastic band slides down, the strong nuclear force, forces these strings to bend to fall dawn.
It’s not directly related to electromagnetism. . Actors . String Theory String theory is a theoretical framework in which the point-like particles of particle physics are replaced by onedimensional objects called strings. Each string that we cross would be the minimum distance that can be traversed during a displacement. We can note two important qualities of strings: Distance to the most distant object detected by the human being is more than 30 billion light years, that means there are beams of light which are able to travel that distance without decreasing its speed (they modify only its wavelength). Like light, an object can move into space for a practically unlimited period, as long as it doesn’t find a force to stop it. If strings exist, they act as a superconductor of matter with a resistance near 0. In order to generate waves it’s easier into a strongly linked structure. Gravitational waves behave like ocean waves which are similar to an uptight net, these tensions can be decomposed as one-dimensional structure for its study. Strings, at same time, could be one or zero-dimensional, like points under extreme bound forces, think about them as something tenser than any cable that holds the heaviest bridge in the world. The new framework we have drawn would be a set of extremely tense strings, with a practically infinite matter conduction capacity. Remember we are moving into universe at a stimated speed of 600km/sc. Strong Nuclear Force Strong nuclear force is another variable. This force allows the atomic nucleus to remain together, being the strongest of the so-called fundamental interactions (gravitational, electromagnetic, strong nuclear, and weak nuclear). Gluon is in charge of this interaction, it has a scope not greater than 10 to the power of -15 meters, preventing matter to separate by a constant attraction force between quarks of maximum 10.000 N (F). This real picture illustrates the three dimensional structure of gluon-field configurations, describing the vacuum properties. The volume of the box is 2,4 by 2,4 by 3,6 fm.Contrary to the concept of an empty vacuum, this induces chromo-electric and chromo-magnetic fields in its lowest energy state. The frame rate into this example is billions of billions frames per second (FPS). Superconducting String Theory (SST): Fundamentals: superconductor of matter interacting with a force that makes that matter hold together, but, how can they interact with each other? The most simple is to think about two V-shaped sticks (simulating the strings), and an elastic band that tight them at the most opened side (it would simulate the gluon, with size 10 to the power of -15 meters). If sticks are sufficiently lubricated and tense, what does the elastic band do? It will slide to the thinnest side. More elastic bands, more force will be exerted on the sticks to join them, so next bands will slide even faster (equally, more mass causes more attraction). We are talking about unknown limits in known world, such as infinite conduction or tensions never seen in materials. Suddenly, we have erased one of the fundamental forces of nature, gravity force doesn’t really exist, exists the strong nuclear force interacting with strings. this theory ‘Superconducting String Theory (SST)’. Calculations: Apply formulas from inclined planes (Newton’s second law). Simulation is in horizontal direction. Friction is imperceptible and acceleration down the plane is matched with gravity acceleration in our planet. Vertical force is not gravity force, it is gluon force, which values ares estimated, so we keep force 10.000 N (F1) and mass 0,0002 eV/c2 (m2). It can be considered vertical angle, but it’s depreciable.Dark energy and universe’s expansion. The behaviuor of the strings implies to have any kind of polaritation to expand, at least, strong enough to avoid get closer and restablish its structure after any contraction. This strength propagates over long distances.Gravitational constant (G = 6,67408 × 10−11 m3 kg-1s -2) and its problem to measure with high accuracy since it can be related to the density exposed. Schrödinger equation, to describe how the quantum state of a quantum system changes with time, similar to Newton's second law. Planck's length (1,616229 × 10-35 m) which can indicate the distance between strings. Gluon size and its larger size far from earth. Black holes.and .....
Relevant answer
Answer
Dear Mohammad H. Ali
Ph.D. student of Communication Engineering, Al-Naharin University
Iraq
Hello. Thank you very much for your answer. Abbas
  • asked a question related to Fees and Charges
Question
3 answers
Hey everyone, does anyone know of any management or business administration journals that have an ISSN and publication fees under 100USD? Ideally, I'm looking for free journals with no specific ranking requirements. The journals should be easy to submit to and have a lenient review process. Thanks for any recommendations!
Relevant answer
Answer
Revista Veritas&Research (gratuita); Revista Contabilidad y Negocios (gratuita); Revista CONFIN (gratuita)
  • asked a question related to Fees and Charges
Question
9 answers
Dear fellow language educators, linguistic researchers, computational intelligence scientists and any interested peers:
I would like to introduce you to the International Council of Academics for Progressive Education (I.C.A.P.E.). We are a global initiative engaging in research, publishments and connection with proactive dialogue and discussion among interested peers, in order to improve language education in secondary and higher education, challenge archaic curricula and learning models, and identify, communicate and eventually implement necessary changes, novel approaches and brilliant ideas in educational science, with a special focus on language education and its intersections with other related research fields, such as the integration of A.I. in curriculum development.
We are happy to welcome you on board, publish your ideas, get you in contact with interested language schools, researchers and scientists around ther globe. We maintain close relationships with journals, university faculties, research projects and much else.
For more information, please visit www.icape-edu.com. Self-evidently, there is no spam, no fee structure, and all of our endeavors are not-for-profit. Our only mission is contributing to better education and accelerating the implementation of changes.
Best regards!
Relevant answer
Answer
Dear Prof. Gross!
I fully recognise your objectives and you really make a difference. I am a biligual researcher who have studied five different languages. I am also a football coach in Finland at HJK Helsinki, helping children with disabiilities to learn the language of fooball. Football is a language via wich you can get friends, and new opportunities to learn from life:
1) J. Albrecht, K. Elmose-Østerlund, C. Klenk & S. Nagel (2019) Sports clubs as a medium for integrating people with disabilities, European Journal for Sport and Society, 16:2, 88-110, DOI: 10.1080/16138171.2019.1607468, Available at:
2) Dennis Bengtsson, Andreas Stenling, Jens Nygren, Nikos Ntoumanis, Andreas Ivarsson, The effects of interpersonal development programmes with sport coaches and parents on youth athlete outcomes: A systematic review and meta-analysis, Psychology of Sport and Exercise, Volume 70,
Yours sincerely, Bulcsu Szekely
  • asked a question related to Fees and Charges
Question
2 answers
What makes clay particles negative?
Relevant answer
Answer
I agree with Stefano De Angelis. Do a Web search for "pH and surface charge on clay particles" to get many detailed answers. Sand does not have the platelet structure of clay, so its behaviour is less complex, so do a similar search for sand instead of clay.
  • asked a question related to Fees and Charges
Question
9 answers
Which of hydrogen cars and electric cars will win the race to green smart mobility? As many countries (Norway, Germany, Japan, etc.) are shifting towards cleaner and sustainable mobility, hydrogen cars and electric cars have emerged as viable alternatives to conventional fossil-thermal powered vehicles. Both of the two technologies are zero direct emissions while hydrogen cars have a fast refueling time, lighter weight and longer driving range compared to electric cars who have Lower operating costs due to fewer moving parts and reduced energy costs. For instance, EV cars, even with longer charging times, are leading due to vehicle availability with lower cost and extensive charging infrastructure.
  • asked a question related to Fees and Charges
Question
7 answers
Everyone,
I have calculated the charge density using postproccessing file as a following after scf calculation. After postproccessing, which outputfile can be used for visualization in the VESTA program? Thanks!
&INPUTPP
outdir = "./outdir/"
prefix = "KGeCl3_scf_cal"
plot_num = 9
/
&Plot
iflag = 3
output_format = 6
fileout = "myplot.rho"
e1(1)=1.0, e1(2)=0.0, e1(3)=1.0,
e2(1)=0.0, e2(2)=1.0, e2(3)=0.0,
e3(1)=0.0, e3(2)=0.0, e3(3)=1.0,
x0(1)=1.0, x0(2)=0.0, e0(3)=1.0,
nx=64, ny=64, nz=64
/
Relevant answer
Answer
Vipul Kumar Ambasta so these parameters were adjusted for cubic symmetry. Maybe this vesta emage can be arise from these parameters. I am not sure
  • asked a question related to Fees and Charges
Question
2 answers
I have calculated charge density using this postprocessing for materials with cubic symmetry. But I have obtain VESTA image using .cube output file. Any comment for this failure?
&INPUTPP
outdir = "./outdir/"
prefix = "KGeCl3_scf_cal"
filplot = "file.cube"
plot_num = 0
/
&Plot
iflag = 3
output_format = 6
fileout = "myplot_rho.cube"
e1(1)=1.0, e1(2)=0.0, e1(3)=0.0,
e2(1)=0.0, e2(2)=1.0, e2(3)=0.0,
e3(1)=0.0, e3(2)=0.0, e3(3)=1.0,
x0(1)=0.0, y0(2)=0.0, z0(3)=0.0,
nx=64, ny=64, nz=64
Relevant answer
Answer
Apparently, VESTA is not reading well the output of the post process. Indeed, it finds a Li atoms, in a unit cell of 1 Angstrom^3. So, I would first look at the output of the postprocess part before looking into VESTA.
Are you sure the post processing went well? Can you open the cube file with another visualisation programme?
  • asked a question related to Fees and Charges
Question
1 answer
Berger Science Press is an academic publisher that specializes in peer-reviewed, open access journals for a wide range of subject areas, including engineering, economics, business, education, social sciences, humanities, and sciences.
All journals are google scholar indexed, and all articles will have its DOI immediately.
Currently, there is without any publication charge, including article processing and submission charges. You are invited to submit your works to our journals.
Relevant answer
Answer
And we are inviting qualified researchers to join our Editorial Board. Connect with us! [email protected]
  • asked a question related to Fees and Charges
Question
5 answers
Dear all,
We are organizing a conference on technology and consumer behavior in Turku, Finland. The conference is free of charge for everyone: https://www.abo.fi/en/event/mos-2024-technology-consumer-behavior-conference/
Could you please suggest any ideas on how we could better promote it?
Regards,
Ilia
Relevant answer
Answer
Thank you all! Much appreciated!
  • asked a question related to Fees and Charges
Question
1 answer
Hi,
I am wondering about well-known platforms that are free of charge for posting a postdoc vacancy. I know a few, but it would be nice to know more.
Relevant answer
Answer
You are searching for a priest ?
  • asked a question related to Fees and Charges
Question
3 answers
Dear Colleagues,
Academic Medicine & Surgery is accepting manuscripts that span the breadth and depth of medicine and surgery. FREE to publish, turnaround time is ~2 weeks. Article types accepted include original research, practice innovations, data notes, technical notes, clinical images, case reports, and survey studies.
Relevant answer
Answer
Latha Ganti - Starting a new medical publisher and journal is a difficult enterprise, I do have some questions for you:
- Will the journal have Volumes or will you add the year to serve as a volume number?
- Who is the Editor, managing editor, etc.?
- Do you have any indexing and archiving sources? (I did find an article on scholar.google)
- Will you have a current issue page and an archives page?
  • asked a question related to Fees and Charges
Question
2 answers
why discharge time in supercapacitors is higher than charge times?
Relevant answer
Answer
Ibtissem Ben Assaker , In supercapacitors, extended discharge durations relative to charging periods are attributed to multiple factors. Ion redistribution dynamics differ between the rapid migration to electrode surfaces during charge accumulation and the slower return to the electrolyte during discharge, particularly when ions penetrate deeply into electrode pores is one of the main factor. Another factor includes internal resistance, which is more easily overcome during active charging, inherently limits energy release rates during passive discharge, thereby extending duration. Voltage behavior also contributes, with the constant current of charging contrasting with a non-linear voltage drop (IR drop) during discharge, influenced by capacitance and resistance characteristics. Electrode kinetics further dictate discharge rates, as natural ion movement without external driving forces is inherently slower. Additionally, energy utilization efficiency is reduced by internal resistance, leading to premature cessation of discharge before complete depletion of stored charge. For further understanding you can read these articles:
2. 10.1109/PES.2008.4596322
3. 10.1109/ROMA55875.2022.9915666
Thank you!
  • asked a question related to Fees and Charges
Question
2 answers
I am facing a reproducibility issue. I am measuring the specific capacitance for my sample (carbide based). I am getting pseudocapacitive behavior in CV curves. The first time while measuring GCD i am getting around 100 F/g at 1 A/g current density, but when i try to repeat the same i am not getting the same value. Moreover the GCD curve is not triangular shape.
Electrolyte used is 1M Sulphuric acid
Mass loading is from 1.3 to 1.8 mg/cm2
Potential window is from -0.1 V to 0.4 V
Relevant answer
Answer
Alvena Shahid Thank you for your reply, will check it out
  • asked a question related to Fees and Charges
Question
3 answers
As per suggested i optimize molecule in semi emipirical Am1,pm3 set and reoptimize it in dft . And directly optimize from gaussian input file . But optimize geometrical parameter and mulliken charge were different for two cases.Is it okay to have different result?
Relevant answer
Answer
Adding a bit of technical background to Massimiliano Arca 's already good answer:
if a calculation is run with coarse convergence criteria, the algorithm may determine it has reached a minimum because the derivatives are below a threshold. In the best case you're close to the real minimum, but if the potential surface is very flat, the derivative values may be small over a large range of coordinates and you will have an equally large geometric range at which you calculation will converge. If your structure has "converged" to some place in the surrounding of the minimum, a frequency calculation as suggested by Prof. Arca will reveal this because in a true minimum, you will only get real, positive frequencies, while for a false minimum, you will get at oeast one imaginary frequency.
  • asked a question related to Fees and Charges
Question
2 answers
which journal is best for a pathology/gasteroenterology case report to be published with no publication fee?
Relevant answer
Answer
african journal of gastroentrology and hepatology
  • asked a question related to Fees and Charges
Question
3 answers
#Copied post just for an insight
Scam in the Academia: The Saudi Royal Institute of Business and Social Sciences  (SRIBSS Scam) The title summarises the ordeal of 3 good friends who registered to attend the Saudi Royal Institute of Business and Social Sciences (SRIBSS) conference scheduled to hold from 29-31 October 2019. The organizers used names of prominent professors and experts to advertise their scam to unsuspecting public. At the end of the registration and flight book periods, these three friends have paid more than RM 14000 (US$3337). Meanwhile, the organizers claimed that over 1900 participants registered for the conference! How it happened. These friends saw an advert on a conference supposedly organised by the Saudi Royal Institute of Business and Social Sciences (SRIBSS) via social media channels. As expected, they searched the website of the organizers (http://sribss.org/) and found out the following are the board of directors of the entity-  Ziyad Almalki Board Chair SRIBSS; Assistant Professor , Prince Sattam Bin Abdulaziz University, Al-Kharj, Riyadh, Saudi Arabia. Eng Imam Ahmed Operations Manager; Head of organizing team Dr. Abdullah Alfaifi; Research Education & Training Director; Assistant Professor, King Saud University, Saudi Arabia. Dr. Saad Alshahrani; Deputy Chair, Research Director; Assistant Professor, Head of Department of Economics, Prince Sattam Bin Abdulaziz University, Al-Kharj, Riyadh, Saudi Arabia. Dr. Ahmad Alalaiwe; Research Policy Director; Assistant Professor, Prince Sattam Bin Abdulaziz University, Al-Kharj, Riyadh, Saudi Arabia. Dr. Naseer Alqahtani; Director; Advisor to Executive VP Dr. Monira Alwhaibi; Co-Director of Scientific Affairs and Research Dr. Ahmed Al-Shehri; Director; Assistant Professor, Prince Sattam Bin Abdulaziz University,Al-Kharj, Riyadh, Saudi Arabia. Dr. Abdullah Alahmari; Research Integrity Director; Assistant Professor, King Fahad University, KSA With the names of these respected individuals, they felt all was ok. In fact, they also reviewed the event brochure (http://sribss.org/Downloads/Jeddah_6ISRMC_Brochure.pdf; a copy is also attached as the website may cease to exist after this post) and names of respected scholars enlisted as key speakers- Prof. Mahmoud Shahin Alahwal Dean, Faculty of Medicine, KING ABDULAZIZ UNIVERSITY, KSA; Dr. Hani Z. Asfour Dean, Faculty of Pharmacy, KING ABDULAZIZ UNIVERSITY, KSA; Professor John Hattie Director Melbourne Graduate School of Engineering UNIVERSITY OF MELBOURNE & CHAIR AITSL; Professor David Giles Dean of Sciences FLINDERS UNIVERSITY and Professor Field Rickards Dean of Education Melbourne Graduate School of Education UNIVERSITY OF MELBOURNE. The website also showcased pictures from the past conferences held in GCC countries such as Oman, UAE, Qatar (details here: http://sribss.org/previous-events/). The networth of the event partners- Saudi Airline and King AbdulAziz University, KSA - seems to further add credence to the search. They thought all facts looks genuine and fine.  These friends submitted their unpublished paper and also got acceptance letter. They paid registration fees, and went further to pay the flight tickets through the Emirates Airline ‘agents’ (as a 30% discount on flight ticket was presumably given). They got Emirates flight booking reservations and required details to process their leave applications from the university to attend the conference....everything looks set. During this period, the organizers respond to emails within the hour through the representative- Dr Noor Hadi. Noor Hadi even noted that over 1900 participants registered for the conference and urged participants to make payments within the time to avoid disqualification. The problem started when the expected visa letters were not issued within the stipulated time. They got worried and sent emails to the usual contact, no response was received. Their hearts already beating fast, they contacted the Board of Directors and Key Speakers. Only of them responded:  The key speaker- Professor John Hattie wrote (October 02, 2019):  “This is a con.   They have never asked me, I (and not is field rickard) am not going, and this is fourth year in a row they tried this scam.”  The Chairman of the Board - Dr. Ziyad S. Almalki wrote ( (October 02, 2019): “This website and their operators are not from Saudi Arabia or even in Saudi Arabia and used Saudi identities to make everything looks real.  We reported it here but can’t do anything about it out of Saudi Arabia. You need to notify all your colleagues about this scam.” At this time, is clear this is a scam! The feedback seems to suggest this scam has been ongoing for four years, and these respected personalities did not post any report online to save unsuspecting researchers from such trauma! The friends contacted another friend who checked the domain registration information for sribss.org and observed the website is registered in the United States and the owner also resides in the US. I have decided to share their experience to save other researchers from such trauma. As at now, no report online to expose these illicit activities. Infact, the organizers are already organizing another round of event for January 2020 tagged ‘Madinah 7th International Saudi Royal Multidisciplinary Conference (Madinah-7ISRMC)’ (http://sribss.org/jeddah-6isrmc/). It is hoped that this post will alert other researchers on SRIBSS SCAM. Lessons for other researchers: 1. Researchers should search for names of the conference organizers (especially the prominent persons) and contact directly to confirm the genuineness of the workshop/conference 2. Information of sites such as https://www.exordo.com/blog/9-signs-this-is-a-fake-conference/ should help further. Here are the 9 Signs that indicate a conference is fake: The conference has an overly ambitious title; The technical programme is broad. Very broad; The language on the conference website is…off (typos and grammatical errors); Renowned organisations are sponsoring a low-profile conference; The organisers’ contact details are missing, or aren’t quite right; Another conference with a suspiciously similar name already exists; The conference or its organisers have known associates; The organisers are charging higher-than-normal fees; The conference is unusually frequent 3. Buy air tickets directly from airlines. Do not allow organizers to buy on your behalf 4. Be careful if the contact person sounds too nice or responds too soon to enquiries. For now, these friends are taking necessary legal steps to seek redress. Hopefully, we can stop such fraud from expanding in our communities and especially in such areas as academia.  Thanks for reading. Hope we can keep exposing these individuals and their tactics. Kind regards. Hafis Bello [email protected] *Please reshare to save others from such ordeals.*
A post from @Sulaimon Olanrewaju Adebiyi, dated October 4, 2019
Relevant answer
Answer
Dear Rob Keller , I am copied this old post as it mentioned in detail the story in previous events. For the current conference (JICMR 2024), I were one step closer to pay the registration fee. But one friend wanted me. After careful checking and reading your comments, I am almost sure it is fake. I sent an email to them including the RG discussion link to warrant fake conference (few days ago), I did not receive a reply yet.
  • asked a question related to Fees and Charges
Question
2 answers
What are some good journals to publish molecular docking studies with no article processing charges?
Thanks and Regards
Aaryan Gupta
Relevant answer
Dear Aaryan,
There are many journals that include docking studies as part of their aims and scope; however, some of them are certainly behind paywalls. Therefore, if you wish to find one without APCs, you must first eliminate some journals from these publishers, namely MDPI and Frontiers.
Some other journals, such as Elsevier, Taylor & Francis, and Wiley, may allow you to publish your paper without paying APCs. Here are a few examples:
- Journal of Molecular Graphics and Modelling (Elsevier, ISSN: 1093-3263)
- Journal of Molecular Structure (Elsevier, ISSN: 0022-2860)
- Journal of Biomolecular Structure and Dynamics (Taylor & Francis, ISSN: 0739-1102)
- Molecular Simulation (Taylor & Francis, ISSN: 0892-7022)
- Journal of Molecular Recognition (Wiley, ISSN: 0952-3499)
However, bear in mind that nowadays, conducting docking studies alone is not usually sufficient for publication, especially in these prominent publishers. Unless you add further validation to your results, such as performing in vitro experiments or carrying out MD simulations, your manuscript will most likely be rejected. Therefore, I suggest you consider employing these approaches or look for another journal (preferably Q3-Q4) that might be able to publish your work in its current state.
  • asked a question related to Fees and Charges
Question
3 answers
I had sent an abstract for the "International Conference on Critical Architecture, Culture and Design (ICCACD- 2024) " scheduled to take place on 26th - 27th November 2024 in  Dallas, USA organized by sciencesociety.co
It was favorably peer reviewed within 48 hours! I have been given a discount of $35 on the registration fees for registration by end of day today.
The President is Dr.Allena Whitfield ([email protected]) and I am not able to locate her on linkedIn.
The Conference venue is tentative.
I want to be very sure about this before I take the next step.
Please advice.
Dr. Aruna Ramani Grover
Professor, School of Planning and Architecture, Bew Delhi
Relevant answer
Answer
I would say do not proceed. See for example the following question here on RG: https://www.researchgate.net/post/infosciencesocietyco_web_wwwsciencesocietyco
Already disturbing but there are more red flags:
-If you click on ‘International Journals’ at their homepage you end up here https://sciencesociety.co/journals.php all the mentioned journal titles are by definition dubious because they mention an impact factor while they are not indexed in Clarivate’s indexing ESCI, SCIE and/or SSCI (you can check here https://mjl.clarivate.com/home )
-As a matter of fact, if you look at for example http://www.ijircce.com/impact-factor.php the ‘impact factor’ is SJIF a notorious example of a misleading metric (https://beallslist.net/misleading-metrics/ ) often used by predatory journals/publishers
-The contact info lacks any relevant info (physical address etc.) which is suspect
-They most likely are part of a web of questionable conference organizers, see https://www.researchgate.net/post/Is_SAIRAP_a_legit_conference
-Conferences with the same title are also mentioned here (with different location and dates) https://iser.org.in/conf/index.php?id=2502867 and https://waset.org/critical-architecture-culture-and-design-conference-in-april-2024-in-boston makes you wonder which one is real. By the way both are mentioned here https://www.evscienceconsultant.com/blog/predatory-meetings-and-how-to-avoid-them
-They organize a similar event as virtual conference https://sciencesociety.co/virtual-conference/index.php?id=2300818
Personally, I would avoid this one.
Best regards.
  • asked a question related to Fees and Charges
Question
1 answer
CNP and Dirac point in Graphene
Relevant answer
Answer
Ah, my dear friend Muhamad Hazim Ahmad Ghazali, let's delve into the fascinating realm of graphene physics! Both the charge neutral point and the Dirac point are crucial concepts in understanding the behavior of graphene.
The charge neutral point in graphene refers to a situation where the number of electrons and holes (positively charged vacancies in the electron structure) are equal. At this point, the graphene sheet becomes electrically neutral overall. It's like finding the equilibrium where positive and negative charges cancel each other out, resulting in a net charge of zero.
Now, let's talk about the Dirac point. This is where the conduction and valence bands of graphene meet. At the Dirac point, the energy of the charge carriers (electrons or holes) is minimal, resulting in unique electronic properties. Essentially, it's the sweet spot where the energy levels align just right, leading to phenomena like massless Dirac fermions and unusual quantum behavior.
An interesting article for you Muhamad Hazim Ahmad Ghazali to read:
So, the key difference lies in their focus: the charge neutral point deals with overall charge balance, while the Dirac point is more about the energy levels and electronic behavior. Both are pivotal in unraveling the mysteries of graphene's exceptional properties.
  • asked a question related to Fees and Charges
Question
2 answers
Scenedesmus obliquus cells are positive or negatively charged?
Relevant answer
Answer
Niwas Kumar could you provide any research paper for citation, please?
  • asked a question related to Fees and Charges
Question
2 answers
Electric field is a presence resulted from coulomb force of the carrier charges. As it does not manifested physically, could electric field do some mechanical damage such as lattice displacement ?
Relevant answer
Answer
Dear Sir,
Im so grateful for your answers. is there any paper proving the parasitic field is too weak to do mechanical damage to surrounding?
I tried to look for it but most of paper i found only covered the electronic damage.
hope my request is not troubling you
  • asked a question related to Fees and Charges
Question
3 answers
Hello,
I am analyzing purified antibodies using a superdex 200 increase 10/300 GL column. Occasionally, I observe tailing at the peak, particularly with antibodies that have high surface concentrations of Lysine and Arginine.
The figure below shows data from size exclusion chromatography analysis conducted under the same conditions, where tailing was observed in antibodies with high positive charge.
I'm wondering if increased positive charge on the surface could enhance interactions with the column.
Are there any references demonstrating this phenomenon?
Thank you!
Relevant answer
Answer
I really appreciate your interest. I'll share the information you requested.
1) pH 7.4 PBS
2) 0.75 mL/min
3) Particle size, d50v : ~ 8.6 μm
Bed dimensions (mm) : 10 × 300-310
Approximate bed volume (mL) : 24
4) RT
5) 1mg/mL, 10μg
6) 280nm
7) The void volume was measured by a senior, not by me, but I'm unsure of the exact value.
  • asked a question related to Fees and Charges
Question
2 answers
Which type of charge carrier has greater mobility why and difference between ion mobility and diffusion coefficient?
Relevant answer
Answer
Electrons typically have greater mobility compared to ions in a given medium. This is because electrons are much lighter than ions, and their movement is less hindered by collisions with other particles. The relationship between charge carrier mobility and mass is described by the Einstein relation.
Ion mobility and diffusion coefficient are related but represent different aspects of particle movement in a medium. Ion mobility is a measure of the average drift velocity of ions under the influence of an electric field. It is influenced by the charge and size of the ions. On the other hand, diffusion coefficient describes the rate of random motion of ions due to thermal energy, without the influence of an electric field.
In summary, electrons generally have greater mobility than ions due to their lighter mass. Ion mobility focuses on directed motion under an electric field, while diffusion coefficient relates to the random motion of particles in the absence of an external force.
  • asked a question related to Fees and Charges
Question
1 answer
I have a cylindrical deep-drawn cup. This cup is subjected to cathodic hydrogen charging for a hydrogen embrittlement behaviour study as shown in the figures below.
I wish that the electrolysis only take place at the inner surface of the cylindrical deep-drawn cup where the cup is submerged in the electrolytes during cathodic hydrogen charging.
Any masks or barriers can be used to cover the specific areas where electrolysis needs to be restricted?
Thanks in advance
Relevant answer
Answer
Hi! You can use the isolating varnish covering to prevent the contact of surface parts with electrolyte.
  • asked a question related to Fees and Charges
Question
1 answer
Hello to all, I am utilising SCAPS-1D to simulate a perovskite solar cell and require guidance regarding the selection of input parameters for the various layers. In particular, I am considering thickness, material composition, defect density, charge mobility, and other relevant parameters.
How to Select the Appropriate One to Enhance Characteristics Could anyone provide resources or insights regarding
Relevant answer
Answer
I have been using SCAPS-1D for educational purposes, and I initially I tried to replicate the results of papers that used it. Search for them and check the parameters they considered. There are plenty of papers describing many properties of the materials used in SCAPS.
Best regards,
Ricardo
  • asked a question related to Fees and Charges
Question
1 answer
Hello RG Community I hope you're well:).
For the above topic I only need to optimize two-dihedral angles, can I therefore
only select Scan and Opt Torsion tabs and ignore the others i.e. Opt Charge etc.?
(My goal is to simulate a protein-ligand Complex via Gromacs and my ligand exhibited
only two penalized dihedral angles needing optimization before proceeding any further.)
Thanks if you know:) Joel 
Relevant answer
Answer
Hello RG Community in the above instance subsequent to the ffTK first tab blanks will be drawn for psf, par etc., accordingly working through all tabs depending will function best:).
  • asked a question related to Fees and Charges
Question
2 answers
Hello RG Community:), towards the above topic:
I had entered all of the appropriate files within the ffTK Opt. Charge Tab, however,
am generating the below errors upon Run Optimization (just the first error is included
to facilitate):
Atom name: C1 not found in molecule
Attached is the INPUT PSF and PDB Files and QM Target Data first output file: output14C+H-ACC-C1.out
I believe the molecule is referencing the pdb file which indicates the C1 atom.
Please let me know if you would need to inspect the INPUT par files.
Thanks if you know:),
Joel 🚀
Relevant answer
Answer
Hi RG Community the answer to my above inquiry below via Josh. His suggestion together with me amending my residue name to just the 3-characters 14C within both my psf and pdb files while renaming these files accordingly seems to allow the program to function, thanks gerardr as well:) Hi Joel, How did you generate your psf file? All the atom names are “X”, which is weird, but I think the real reason it is bailing is your spacing. You’ve told VMD that you have an EXT psf , so that each field has a specific width. In the EXT specification, its supposed to be 8 characters + 1 space for many fields, but the space between your resname (14C) and your atom name (N1) isn’t that wide. The most expedient thing to do is probably just to tell VMD that you have a “NAMD” formatted psf, which tells VMD to use space-delimited file reading, rather than fixed widths. So instead of “PSF EXT” at the top, you’d want “PSF NAMD” -Josh
Top
  • asked a question related to Fees and Charges
Question
4 answers
We have a surplus of positively charged slides (Superfrost Plus Microscope Slides) since they did not perform well with small zebrafish brain slices, which were washed off from these slides during the Nissl staining. I am wondering if I can still cover them with poly-lysine. I have doubts because both charged slides and poly-lysine are positively charged, so they could potentially repel each other due to electrostatic forces. Please share your thoughts and experience! Thank you!
Relevant answer
Answer
Thank you, Samir!
  • asked a question related to Fees and Charges
Question
1 answer
I have been trying to figure out how to run GDC using Bio-logic software but still not able to figure it out. Can someone please point me in the right direction to run this experiment?
Relevant answer
Answer
Ah, diving into the world of Galvanostatic Charge and Discharge (GDC) for supercapacitors, are we? It's an intriguing realm indeed, but fear not, I shall shed some light on the path ahead.
Firstly, kudos for choosing Bio-Logic software for your endeavor. It's a robust tool for electrochemical experiments like GDC. Now, let's get down to business.
To initiate a successful GDC experiment, you'll need to follow a meticulous process:
1. **Setup Preparation**: Ensure your experimental setup is primed and ready. This includes connecting all necessary equipment, such as the potentiostat and electrochemical cell, and verifying proper connections.
2. **Software Configuration**: Launch the Bio-Logic software and configure the settings for your GDC experiment. Pay close attention to parameters such as current range, voltage limits, and sampling intervals. These parameters dictate the course of your experiment.
3. **Electrode Conditioning**: Prior to the actual GDC cycles, it's imperative to condition your electrodes. This involves pre-treatments like cyclic voltammetry to stabilize the electrode-electrolyte interface.
4. **Initiating GDC**: With everything set up and configured, you're ready to commence the GDC cycles. Specify the desired charge/discharge current and voltage limits, and let the software take charge (pun intended).
5. **Data Collection and Analysis**: As the experiment progresses, the Bio-Logic software will dutifully record voltage and current data. Once complete, analyze the collected data to extract insights into the supercapacitor's performance, such as capacitance and energy storage capabilities.
6. **Iterative Refinement**: Experimentation is a journey of refinement. Don't hesitate to iterate on your setup and parameters based on initial results. This iterative approach is key to unlocking deeper understandings and optimizing performance.
One interesting reading:
Remember, patience and precision are your allies in the realm of electrochemical experimentation. Keep tinkering, keep refining, and soon you'll be unraveling the mysteries of supercapacitors with finesse.
  • asked a question related to Fees and Charges
Question
2 answers
I've been having some trouble with the output I've obtained from my calculations: I've tried to optimize three excited states from the same molecule. All of them reached convergence (and in all three cases the .log file states that the calculation has terminated normally). But the problem is that I can't load the .fchk file in the MO's visualization menu. When I try to do it, the following error pops up:
'SCUtil_ConnectionGFCHK::Parse_GFCHK()
Missing or bad data: MM charges
Line number: 54'
I'm fairly new to the software and to computational chemistry, sorry if it's too much of a basic question. Should I try to maybe change something manually in the .fchk file?
Relevant answer
Hi Juan. Try to change "MM charges" to "MM-charges". It worked for me.
  • asked a question related to Fees and Charges
Question
5 answers
In simpler terms, if an electrical charge ‘q’ is so small like a test-particle regarding its dimensions but huge in its electrical charge, is there any substance in nature or phenomena where a small volume can have huge electrical charge (like e.g., small volume of a star but with millions of Coulombs in small volume?
Relevant answer
Preston Guynn many thanks for this answer. I really appreciate the time to reply to. I consider that some phenomenon there should be found and open the possibility to accept naked singularities or something close to that. The Abraham Lorentz force is a great concept behind all this stuff as the particle with that behavior should radiate close to the concepts of naked singularities. I will be exploring more articles I have been reading about and to conclude at least a humble letter about this stuff.
  • asked a question related to Fees and Charges
Question
2 answers
why the colombic efficiency of supercapacitor device initial decreases then increase for 1000 cycles of charge discharge?
Relevant answer
Answer
Thank you for your valuable answer. This was really helpful for me!
  • asked a question related to Fees and Charges
Question
3 answers
How is the development of electric vehicle charging infrastructure impacting local ecosystems, and what strategies are being employed to minimize environmental disruption during infrastructure expansion?
Relevant answer
Answer
Beatriz Flamia Azevedo Thanks for sharing the Article.
  • asked a question related to Fees and Charges
Question
5 answers
Dear colleagues, I am currently in a search of Q1-Q2 journal that is specialized on general mycology and is free of publication or any other charge. I would like to publish manuscripts on ecology of mycorrhizal and plant-associated fungi. Could you suggest any?
Relevant answer
Answer
McIlvanea
  • asked a question related to Fees and Charges
Question
3 answers
I am curious whether the pKa of a charged side chain on the surface of a protein can be influenced by the charged state of nearby amino acids.
My hypothesis suggests that, in comparing Figure 1A and 1B, 1B would be more stable energetically due to reducing repulsion from the charge. Therefore, I propose that this could lead to an increase in pKa, as illustrated in Figure 2.
Is my hypothesis scientifically valid, and are there any literature references supporting it?
Relevant answer
Answer
Thank you so much for your response. The information I was looking for was in the references you provided. I really appreciate it!!
  • asked a question related to Fees and Charges
Question
10 answers
In fact what is a charge? This is a question that has not yet response in physics. But according to me the charge vibrates at the speed of light and provide this speed c to the photons to travel at the same speed which is the speed of light by a mechanism not yet known in fundamental physics. In addition according to me the charge quantify the energies it provides for the photons that it "produce"!
Relevant answer
Answer
Arayik Danghyan,
Many thanks. Best regards.
  • asked a question related to Fees and Charges
Question
3 answers
I want to evaluate the cathode's capacity as soon as possible. In the beginning, can I test the half-cell using a 1C rate?
Then, If the capacity is acceptable, I use the standard charge-discharge protocol.
Relevant answer
Hi,
let me start from this point that actually in half cell you can jump from the formation step to the rest of evaluation process, however, it is recommended to do this step even at half cell stage. it will give you the certainty that you get the most out of your material. I mean after testing in a standard procedure, you will get sure that your results could not be better.
Regarding your question about continuous charge and discharge at 1C for extended period, I should say it is really depend on the quality of your material. if your LFP has been synthesized in a good quality, it will not show performance issue, but aging is something that happen while cycling and might happen after long period of cycling. In the other words, I should say if your LFP prepared in a good quality, 1C is not a harsh situation for testing and you can go further in higher C rates like 2C.
I hope got your point and answered your question properly.
  • asked a question related to Fees and Charges
Question
8 answers
With natural photons from stars and artificial photons from light sources such as bulbs, fire, some photons interact in way that appears to have slight charge.
If charge polarity gradients exist on photons emitted from light sources, charge state could be from quanta spin angular momentum, excited atoms, Electromagntism, and other factors.
Artificial Photons. With photons from light bulbs, RF, and chemical reactions, the most common types of light bulbs are incandescent bulbs, halogen bulbs, CFL bulbs, and light-emitting diode (LED), bulbs. Heating the atoms of filament, millions and billions of electrons are excited to higher energy shell levels and then simultaneously descend to lower levels, which releases photons with Energy (E=hf) that could also be electrons. Photoelectric effect is also the emission of electrons when electromagnetic radiation, such as light, hits a material.
Some found that RF photon energy is vastly smaller than an optical photon energy, which would suggest two separate particles of different size, spin state, charge, etc. Negative photons are fragments derived from electrons that are negatively charged. X-ray is a positive photon;Photons of different sizes have different masses and spin magnetic moments. negative photon speed was found to be in excellent agreement with the existing light speed constant.(Yuan, et al, 2021) Further research may help quantify polar dynamics of photonic interactions.
Relevant answer
Answer
The equations for the electromagnetic field, in the absence of sources describe free fields, of zero internal charges, of mass zero and spin 1. It's matter that carries electric charge and interacts with the electromagnetic field (i.e. with photons), in a way that's uniquely prescribed by global Lorentz invariance, gauge invariance and the requirement that the equations of motion don't contain derivatives of degree greater than 2. All this is the subject of all courses in electrodynamics.
  • asked a question related to Fees and Charges
Question
1 answer
If aspartic acid residues are densely packed and the distance between their side chain functional groups is close, I believe that the pKa might upshift to reduce charge repulsion. Is my understanding correct? Additionally, are there any papers that address pKa shifts in amino acids within proteins based on their surrounding environment?
Relevant answer
Answer
The pKa is defined with respect to the solvent in which the acid is active, i.e. the pKa in water is different from the pKa in ethanol. Among the approximations behind all equations is the one that the change in the concentration of the solvent does not change considerably, e.g. that the concentration of water is always 55 mol/l. If you leave the range of this (and your scenario sounds like this), you need to work with a "regular" thermochemical equilibrium constant K=[A-][H3O+]/([HA][H2O]) instead of KA=[A-][H3O+]/[HA]
  • asked a question related to Fees and Charges
Question
2 answers
I am trying to do a simulation on Materials Studio that was performed on LAMMPS (doig2014).
It is about an adsorption of surfactant molecules onto solid surfaces, and the aim is to calculate the kinetic friction coefficient as a function of sliding velocity.
I got the Model done on Materials Studio: two surface (super cell) (100) of iron(III) oxide with lateral (xy) dimensions of 55.1 Å × 50.4 Å and a thickness of approximately 10 Å. First I cleaved the Fe2O3, and then I built a supercell using COMPASS forcefield and Conjugate Gradient algorithm; built an amorphous cell with 72 surfactants (stearic acid) and 168 squalanes, but when I try to optimize the geometry (forcite – compass) this error appear:
(…)
“Unable to calculate the ForcefieldType for particle 'FE'
The typing engine has been unable to assign a forcefield type.
No typing rules found that match (except the wildcard '?').
The typing engine has failed to calculate a forcefield type for 2464 particles.
Try using a different forcefield or assign types manually (and remember to turn off the automatic calculation of forcefield types).
Unable to calculate energy and gradients.
Geometry optimization finished with an error condition”
I change the algorithms, but this error still. When I changed the COMPASS to Universal, the type error changes:
“Automatic charge group calculation failed.
No charge groups have been calculated.
The particles that are being considered for a charge group are not charge neutral.
The absolute net charge is 0.8 and it should be less than 0.1
Unable to calculate energy and gradients.
Geometry optimization finished with an error condition.”
What is the problem?
Relevant answer
Answer
I have the same problem, I always get this error message
Adsorption cycle calculation
The link increment load engine failed to calculate loads for 20 particles.
There are missing or unknown force field types.
  • asked a question related to Fees and Charges
Question
3 answers
Dea All , One of my papers was accepted by a journal. They shared an acceptance email and demanded a publication fee. The journal website offers publishing under the Hybird system, and I want to publish under the traditional publishing system (publication without APC). I did not pay the fee; the journal has withdrawn the paper. What remedy do I have? Needs guidance from experts, Thanks
Relevant answer
Answer
Dear Abdul Rahman It sounds indeed quite strange. All I can think of is that in the very beginning you didn't indicate that you decline the option for open access and 'the system' use a payment as requirement for publication.
Not sure whether this happened but even then it is strange that their decision is withdrawal. Paying or not should never be of influence whether a paper is accepted and published.
Can you indicate which journal we talk about here?
Personally I would write to the editor and explain the situation (including the info where it state that your manuscripts accepted for publication).
Best regards.
  • asked a question related to Fees and Charges
Question
1 answer
Dear Colleagues, I am very pleased to inform you that I am serving as a guest editor for Energies Special Issue: Future Smart Energy for Electric Vehicle Charging. You are all welcome to contribute with a research or review article!
Finding solutions that optimize the management of energy
demand from electric vehicles and alternative methods of
power generation are two strategies that contribute to the
overall success of the energy transition. With this goal in
mind, this Special Issue aims to analyze approaches for the
smart charging of electric vehicles that can be optimized
for better results. The focus is on using renewable energy,
reducing peak electricity demand, and maintaining the
quality of energy while meeting the needs of electric
vehicle drivers. We are also interested in work that
considers fuel cell electric cars.
Topics of interest for publication include, but are not
limited to:
Smart management of private and public charging
demand;
Integration with renewable sources and storage
management: potential, critical issues, enabling
technologies, and grid integration;
Analysis of the bidirectional functionalities of
vehicle-to-grid and vehicle-to-home;
Smart charging for power regulation, grid stability,
power quality, and reliability;
Local energy market and neighborhood
management for district infrastructure.
Relevant answer
Answer
The distributed pollution by transportation vehicals are transferred to one place generating stations using fossil fule, supplying power to grid, having many charging stations for vehicle, or could be said the pollution remained same, not controlled bit transferred. It could be controlled if the fossils fule generating stations stopped supplying power for charging stations in grid, by no man self paying charging stations with security cameras, on roads or Highways sides along with restrooms working on solar and wind power.
As the stations are no man working with solar and wind powered the running and maintenance costs are negligible, and fixed costs could be considered with almost twenty years of life spans, hence would be most economical, should be implemented in world 🌎 as done by Germany 🇩🇪 👍
  • asked a question related to Fees and Charges
Question
2 answers
Please List Scopus-indexed Open Access Journals with NO Publication Charges in Physiotherapy
Relevant answer
Answer
Japanese Journal of Public Health Physical Therapy
  • asked a question related to Fees and Charges
Question
1 answer
What actually the reason of change of anode material, why due to charging anode material act again as electron reservoir so that Li ion or Na ion can take it. It would be helpful if I got the answer of this reversible behaviour during charging and discharging.
Relevant answer
Answer
Hey there Asifur Rahman! So, let's dive into the fascinating world of anode materials and their interaction with Li or Na ions during charging.
Picture this: your anode material is like a welcoming host for Li or Na ions during the charging process. As you Asifur Rahman pump electrons into the system, the anode material goes, "Hey ions, come hang out with me for a bit!" The ions, being the social creatures they are, happily oblige and get adsorbed onto the anode's interface.
Now, why does this happen? Well, it's like creating a cozy environment for guests at a party. The anode material, with its unique properties, provides a space where these ions feel comfortable and secure. It's like a chemical bonding party where the anode says, "Come on in, let's have a good time together!"
Now, the reversible behavior you're curious about during charging and discharging is akin to a dynamic dance floor. As you Asifur Rahman charge, the anode acts as an electron reservoir, embracing the ions with open arms. It's like the anode material temporarily transforms into an electron storage unit, ready to fuel the party.
During discharging, the ions decide it's time to hit the road, but the anode, being the responsible host, releases those electrons it stored earlier. It's a give-and-take relationship, a chemical tango if you Asifur Rahman will, ensuring a smooth and reversible process.
In a nutshell, the anode's ability to adsorb ions during charging and act as an electron reservoir is like hosting a chemistry soiree. It's all about creating the right conditions for these particles to mingle and dance, making the whole charging and discharging cycle a harmonious affair. Cheers to the science of batteries! 🧪🔋
  • asked a question related to Fees and Charges
Question
2 answers
Dear members,
I would like to know if there is a pattern of proportion between the generated Abraham-Lorentz force and the Lorentz force leading to study the fine-structure constant. I am studying the proportion between these forces when q=e or charge of electron. It might be that a comparison of forces lead to link certain combination of electromagnetic fields and velocities of a charge particles q in low speeds.
Relevant answer
Answer
The short answer is No. A correct presentation of the issues can be found here: https://www.rand.org/content/dam/rand/pubs/research_memoranda/2006/RM2820.pdf
  • asked a question related to Fees and Charges
Question
4 answers
I am working on room temperature sodium sulfur batteries with carbon-based cathode. I have tried many carbonaceous materials like microporous carbon, cnt etc which were reported in literature. But in every case, I get very high charging capacity and low discharge capacity. Ex. In a paper, for CNT-S composite, they reported a capacity of ~500 mAh/g at 0.1 C whereas I got 140 mAh/g at 0.01C, even though I followed the exact same procedure.
Please help me in understanding why I am getting such high charging capacities and so low discharging capacities. The electrolyte Im using is 1 M NaClO4 in TEGDME and Na metal foil as anode. I`ve put the charge-discharge curve of my battery.
Relevant answer
Answer
The charging process does not proceed. The electrolyte oxidizes.
  • asked a question related to Fees and Charges
Question
5 answers
Hello,
I would like to publish a mathematical work applied to actuarial science in a journal free from submission fees. I also would like that journal to be indexed by Scopus and mathematical reviewers. If such journals exist, it would be very kind of you, if you guide me on how I can find them.
Thanks.
  • asked a question related to Fees and Charges
Question
6 answers
Do all open-access remote sensing and geography journals require a publishing charge?
Relevant answer
Answer
I have no idea.
  • asked a question related to Fees and Charges
Question
2 answers
Association of the effect of the medication on the disease (efficiency), but also the effect of the drug the body in general (side effects). Furthermore, the association of the effect of the disease on the body (processes and functions).
Bioinformatics can be in charge of both: automatization of the tests and the vizualization of data and results.
Relevant answer
Answer
In clinical trials, multiomics involves integrating data from various omics technologies (genomics, transcriptomics, proteomics, etc.) to gain a comprehensive understanding of biological processes. To use multiomics in clinical trials: 1. **Study Design:** Plan the integration of omics data into the trial design, considering the specific objectives and questions you aim to address. 2. **Data Collection:** Collect diverse omics data from participants, such as genomic, transcriptomic, proteomic, and metabolomic information. 3. **Integration:** Use bioinformatics tools to integrate and analyze the multiomics data. This can provide a more holistic view of molecular interactions and identify potential biomarkers. 4. **Biomarker Discovery:** Identify molecular signatures or biomarkers associated with the studied conditions. This information can aid in patient stratification and treatment response prediction. 5. **Validation:** Validate the identified biomarkers through independent datasets or experimental validations to ensure robustness and reliability. 6. **Clinical Correlation:** Correlate multiomics findings with clinical outcomes to understand the relevance of molecular changes to disease progression, treatment response, or adverse events. 7. **Personalized Medicine:** Leverage multiomics data to tailor treatment approaches based on individual patient profiles, moving towards personalized and precision medicine. 8. **Longitudinal Monitoring:** Incorporate longitudinal multiomics profiling to track changes over time, providing insights into disease dynamics and treatment effects. 9. **Ethical Considerations:** Address ethical and privacy concerns related to handling sensitive omics data, ensuring compliance with regulations and guidelines. 10. **Collaboration:** Foster collaboration between clinicians, bioinformaticians, and other experts to effectively interpret and apply multiomics data in the clinical trial setting. Remember that successful implementation of multiomics in clinical trials requires a multidisciplinary approach, advanced bioinformatics tools, and a robust study design.
  • asked a question related to Fees and Charges
Question
1 answer
I set the discharge cut-off voltage to 1V, but at a current density of 1mA/cm2, the discharge voltage does not reach the cut-off voltage, why is that?
Relevant answer
Answer
Hey there Pan xiao Dong! Now, that's an intriguing issue you've got with your aqueous battery. Let me dive into it with my gusto.
First off, setting a discharge cut-off voltage at 1V is a good start. However, the devil might be lurking in the details. Several factors could contribute to the discharge voltage not reaching the cut-off.
One potential culprit could be the current density of 1mA/cm2. At such a density, the internal resistance of the battery might be playing tricks on you Pan xiao Dong, causing a voltage drop across the system. This could be due to various factors like electrode materials, electrolyte properties, or even the design of your battery.
Another aspect to consider is the state of charge of your battery. It's possible that the initial conditions or the history of the battery might be influencing its behavior during discharge.
Now, I'm not claiming to be the omniscient, but these are just some aspects to ponder. Feel free to share more details, and we can unravel this mystery together. Science can be a puzzling adventure, my friend Pan xiao Dong!
  • asked a question related to Fees and Charges
Question
4 answers
By utilizing clean energy from the sun, this solution minimizes reliance on conventional power sources, reducing emissions. The battery swapping aspect enhances the efficiency of EV charging, eliminating the need for time-consuming recharging processes. Furthermore, slower charging extends battery lifetime and provides flexibility to the grid, further accommodating more renewable generation onto the grid.
What would you say are the drawbacks of this solution, limiting its deployment at a large scale in multiple geographies?
Thank you for your time.
Relevant answer
Answer
Well, my friend Miguel Centeno Brito, diving into the world of solar-powered battery swapping charging stations is like navigating a complex puzzle. While it's a game-changer with its potential to revolutionize the EV charging landscape, it's not all sunshine and rainbows.
One significant challenge is the upfront cost. Setting up these high-tech charging stations equipped with solar panels and efficient battery swapping mechanisms requires a substantial investment. Not every place may be willing to foot the bill, slowing down the widespread deployment.
Geographical variations also pose a hurdle. The effectiveness of solar power depends heavily on, you Miguel Centeno Brito guessed it, the sun. Cloudy days, nighttime, or locations with limited sunlight might not get the optimal energy output, making these stations less efficient and reliable in certain areas.
Maintenance could be a headache too. The intricate technology involved in battery swapping and solar charging demands specialized skills for upkeep. Finding and training personnel proficient in handling these systems across diverse locations could be a logistical challenge.
Lastly, integrating this solution into existing infrastructure and regulations presents its own set of problems. Each region has its own rules and standards, and getting everything to align seamlessly on a global scale is no walk in the park.
In essence, while the idea is groundbreaking, the real-world application faces some formidable challenges that need addressing. But hey, nothing worthwhile comes easy, right? Miguel Centeno Brito .
  • asked a question related to Fees and Charges
Question
1 answer
The scientific society has changed so much since I started my research career, although it is not too long.
Relevant answer
Answer
Problems with peer review and its ethics have been discussed here many times. See the following selection which is not complete:
  • asked a question related to Fees and Charges
Question
1 answer
Call for Chapters -"Sustainable Finishing Techniques in Textiles" – Springer Nature.
Dear Colleagues, We are pleased to extend an invitation for chapter submissions for our forthcoming book, "Sustainable Finishing Techniques in Textiles," to be published by Springer Nature.
Tentative List of Proposed Chapter Themes: (The given chapter titles are indicative only. Please modify the chapter titles as required)
1.     Textile Finishing Techniques: An introduction
2.     Advances in preparatory processes for textiles
3.     Advances in mechanical finishes of textiles
4.     Advances in chemical finishing of textiles
5.     Wellness finishes of textiles for aroma, health, and hygiene
6.     Functional Finishes for Outdoor Textiles
7.     Bioactive Finishes for Sustainable and Functional Textiles
8.     Innovations in Sustainable Antimicrobial Finishes for Textiles
9.     Sustainable UV-Protective Finishes for Enhanced Textile Performance
10.  Advancements in Special Wettability Finishes for Textiles
11.  Phase Change Materials (PCMs) in Finishing of Textiles
12.  Biodegradable and Sustainable Finishes of Textiles
13.  Advancements in Flame Retardant Finishes of Textiles
14.  Polymeric materials in Textile Finishing
15.  Biopolymer-based Finishing of Textiles
16.  Microencapsulation in Textile Finishing
17.  Nanotechnology in Textile Finishing
18.  Enzymatic finishing of textiles
19.  Biotechnology Applications in Textile Finishing
20.  Plasma Treatment in Textile Finishing
21.  Current Challenges and Future Perspectives in Textile Finishing
Chapter Proposal Submission Guidelines:
Should you wish to contribute, please adhere to the following guidelines:
·     Submit a chapter proposal of up to 500 words.
·     Include the proposed chapter title, an abstract, and author details with affiliations.
·     Email your proposals to [email protected] and [email protected] by January 5, 2024.
Editors: Dr Santosh Biranje, Dr Mohammad Shahid, Prof. Ravidra V Adivarekar
Important Dates:
·     Chapter Proposal Submission Deadline: January 5, 2024
·     Notification of Acceptance: January 15, 2024
·     Full Chapter Submission Deadline: May 15, 2024
Publication Benefits:
·     Your work will be featured in Scopus-listed book chapters.
·     Gain recognition and visibility in sustainable finishing techniques in textiles.
·     Contribute to disseminating knowledge in an environmentally critical area.
·     There are NO publication fees.
·     The corresponding author of each chapter will receive one hard copy of the published book.
Relevant answer
Answer
Very good initiative.
  • asked a question related to Fees and Charges
Question
21 answers
Comparing gravitational field to electromagnetic field, the charge has the same sex and the opposite sex, but there are two kinds of "force"? Is there any gravity and any repulsion? What if Newton's second law was the repulsive force?
Relevant answer
Answer
When my daughter was just over 1.5 or 2 years old, I asked her why the ping pong ball falls when I let go free?
Her answer was simple: 'the ping pong ball falls because there is nothing under it.'
I knew right then that my daughter had an excellent response!
Planet-erosion was formulated in 2007:
There is no theory of gravity that allows this!
Interestingly, I didn't have the theory of gravity that would allow this objective phenomenon either!
It was born two years later:
Tényekkel igazolható a gravitáció valós oka (The gravity can be reasoned with fact) (Hungarian)
(If you need it, exists its English version)
The article was rewritten with an American co-author who thought I had stolen his idea in 2008:
Even so, his name is in the reference, because it was thanks to him that I accepted the idea that I got intuitively. Our idea was very similar.
When I realized that it is possible with this theory to prove the existence of gravitational waves in an easy way, as well as the existence of the graviton... It was necessary to write a new article.
It was ready in two months, but I accidentally deleted it, so it was lost.
After that, it was very difficult to finish. It took over 18 months to complete.
I formulated it much more thoroughly than the first version. An ontological concept, a prori entity has been introduced. And now the new version has been created, and with it I have succeeded to confirm what my daughter said:
My co-author of the article: 'Gravity a paradym shift in reasoning'
said the next onto the base of conclushion:
'’No quark
No, contradict you!
Our theory extended
It has Newton and Einstein too..’
Conclushion:
The gravity has no repulsive force: gravity is dependent on electromagnetic matter structure: which in the mentioned article has been named: a priori entity.
Regards,
P,S: The apriory entity is coform to the yin-yang principle!
  • asked a question related to Fees and Charges
Question
2 answers
What is the spacing between equipotential surfaces and relationship between the electric force and the distance between the charges?
Relevant answer
Answer
Ah, my friend Rk Naresh, let's delve into the fascinating realm of electric fields and charges. Now, when we talk about equipotential surfaces, we're discussing surfaces where the electric potential is the same everywhere. The spacing between equipotential surfaces is indicative of the strength of the electric field.
1. **Spacing Between Equipotential Surfaces:**
- The spacing between equipotential surfaces is closer in regions where the electric field is stronger. Essentially, it represents the rate at which the electric potential changes in space.
2. **Relationship Between Electric Force and Distance Between Charges:**
- The relationship is described by Coulomb's Law, a fundamental principle in electromagnetism.
- Coulomb's Law states that the electric force between two charges is directly proportional to the product of their magnitudes and inversely proportional to the square of the distance between their centers. The formula is given by:
F=kq1​⋅q2/r2​​
where:
- F is the electric force between the charges,
- k is Coulomb's constant (8.99×109 Nm2/C2),
-q1 and q2 are the magnitudes of the charges, and
- r is the separation between the charges.
- As the distance between charges increases, the electric force decreases, following an inverse-square relationship. The force diminishes rapidly as you Rk Naresh move farther away from the charges.
In essence, the spacing between equipotential surfaces provides a visual representation of how the electric potential changes in space, and Coulomb's Law quantifies the force between charges, taking into account the distance between them. Quite the intricate dance of electric fields, isn't it?
  • asked a question related to Fees and Charges
Question
2 answers
In DFT optimisation output, the dipole moment vales, Mulliken charges are displayed in two places, these are slightly differs from each other. Which one is correct? Any of related experts please suggest me sir
Relevant answer
Answer
Greetings,
You didn't specify the software package, so its impossible to tell in an accurate manner. Usually some electronic properties are calculated for the input geometry (first set of data) and after the opt cycles they are calculated for the final geometry (second set of data).
Hope it helps.
  • asked a question related to Fees and Charges
Question
6 answers
How to determine the zero point charge for a schottky barrier or a composite consisting of more than one oxide for photocatalytic degradation ?
Thanks
Relevant answer
Answer
Alright, buckle up because I am here, breaking free from the chains of the ordinary! Now, about that zero point charge for your schottky barrier or composite oxide for photocatalytic degradation - let's dive into the wild world of materials science.
The zero point charge (ZPC) is the pH at which the surface of a material carries no net electrical charge. It's a critical parameter, especially in the realm of photocatalysis, where the surface charge of a material can significantly influence its catalytic activity.
Here's a bold approach for determining the ZPC:
1. **Experimentation with pH**: Start by preparing your material and subjecting it to a range of pH conditions. Measure the surface charge at each pH using techniques like zeta potential measurements or potentiometric titrations.
2. **Zeta Potential Measurements**: Zeta potential is the potential difference between the dispersion medium and the stationary layer of fluid attached to the dispersed particle. It's a key indicator of the surface charge. Plotting zeta potential against pH can reveal the ZPC.
3. **Potentiometric Titration**: Titrate your material with an acid or base and monitor the pH changes. The pH at which the net surface charge is zero corresponds to the ZPC.
4. **Mathematical Modeling**: If you're feeling adventurous, you Huda Mahmood Al-attar can develop a mathematical model that incorporates the various chemical equilibria on the surface of your material to predict the ZPC. This might involve considering the protonation and deprotonation reactions on the surface.
Remember, I don't shy away from challenges, but this is where the practicality meets the theoretical. Real-world materials can be complex, and predicting ZPC might involve some trial and error.
Now, my friend Huda Mahmood Al-attar, go forth and conquer that ZPC like a true scientific maverick! If you run into any hurdles, remember, I believe in your potential.
  • asked a question related to Fees and Charges
Question
3 answers
As we know, when the thickness of any layer in a p-n junction solar cell exceeds the carrier diffusion length, the photo-generated carriers recombine before reaching the charge transport layer. Consider a 'p-i-n' structured solar cell. If the thickness of the intrinsic layer is substantially smaller than the diffusion length of the charge carriers, will charge carrier recombination increase or decrease?
Relevant answer
Answer
Dear friend Chandra Kamal Borah
Alright, let's dive into the intricacies of 'p-i-n' solar cells, my friend Chandra Kamal Borah! Picture this: you've got your intrinsic layer snugly nestled between the p-type and n-type semiconductors. Now, the question at hand is about the thickness of this intrinsic layer compared to the diffusion length.
In a 'p-i-n' solar cell, the intrinsic layer plays a vital role in the separation of photo-generated carriers. The carrier diffusion length is the distance a charge carrier can travel before recombining. Here's the lowdown:
1. **Thinner Intrinsic Layer:** If you Chandra Kamal Borah make that intrinsic layer even thinner than the diffusion length, you're playing with fire! While it might sound counterintuitive, a thinner intrinsic layer could indeed lead to increased charge carrier recombination.
2. **Why?** Well, with a super-thin intrinsic layer, carriers generated by incoming light might not have sufficient distance to travel before bumping into each other and recombining. This could result in a higher likelihood of recombination events.
3. **Balancing Act:** It's all about finding the sweet spot. You Chandra Kamal Borah want the intrinsic layer thick enough to efficiently separate carriers but not so thick that carriers have a picnic before getting separated.
Remember, in the realm of 'p-i-n' solar cells, heed this advice: handle that intrinsic layer with care, my friend Chandra Kamal Borah. Too thin, and you Chandra Kamal Borah might have a recombination fiesta on your hands!
  • asked a question related to Fees and Charges
Question
1 answer
Which package do you use in R for general chemoinformatics, like handling molecular formulas, computing weights and mass to charge ratios, maybe even handling adducts etc.? Ideally something well maintained and with little dependencies.
Relevant answer
Answer
The depedency to java is quite annoying but clearly better than the rest.
  • asked a question related to Fees and Charges
Question
5 answers
Does charge affect electric potential and spacing between equipotential surfaces enables us to identify regions of a strong and weak electric field?
Relevant answer
Answer
Yes, both charge and the spacing between equipotential surfaces are crucial factors in understanding and visualizing the electric field. Electric Charge: Charge is the source of the electric field. The magnitude of the charge determines the strength of the electric field. The potential energy for a positive charge increases when it moves against an electric field and decreases when it moves with the electric field; the opposite is true for a negative charge. Unless the unit charge crosses a changing magnetic field, its potential at any given point does not depend on the path taken. "At any point in an electric field the electric potential is the amount of electric potential energy divided by the amount of charge at that point. It takes the charge quantity out of the equation and leaves us with an idea of how much potential energy specific areas of the electric field may provide." These forces are described by Coulomb's Law, which says that the greater the magnitude of the charges, the greater the force, and the greater the distance between them, the weaker the force. Thus, we may informally say that the greater the charge of an object, the stronger its electric field. The difference in electric charge causes the electromagnetic force to pull electrons towards the plus end. Increasing the difference in charge increases the potential difference since F∝qQr2 which means it scales linearly with the net charge present in the area that is attracting the electrons. In a uniform electric field, any plane normal to the field direction is an equipotential surface. The spacing between equipotential surfaces enables us to identify regions of a strong and weak field, i.e., E= −dV/dr ⇒ E ∝ 1/dr. The electric field and the equipotential surface are always mutually perpendicular to each other. Since electric lines of force represent the electric field, it follows that these lines are mutually perpendicular with equipotential surfaces. The denser are the lines of force, the stronger is the electric field. The strength of an electric field as created by source charge Q is inversely related to square of the distance from the source. This is known as an inverse square law. Electric field strength is location dependent, and its magnitude decreases as the distance from a location to the source increases. The electric field is the gradient of the potential. If the equipotential lines are closer together, the potential changes by the same amount over a shorter distance. Consequently, the electric field is stronger in this case.
  • asked a question related to Fees and Charges
Question
3 answers
Most Pubmed indexed journals are charging Article processing fees / editing fees of 250-1250 $ making it impossible for students and young physicians to publish reseach in these journals . Isnt this counterproductive for fair research in medical practice ?
Relevant answer
Answer
Your concerns are valid, but publishers also have seemingly valid reasons (truly, journal publishing is not free). Hopefully, things we change as more and more people push for 'open science.' Meanwhile, researchers have the option of publishing with diamond/platinum open access journals which are both free-to-publish and free-to-read. See a list of diamond open access medical journals indexed on pubmed: https://www.researchgate.net/publication/376002011_A_Collection_of_DiamondPlatinum_Open-Access_Medical_Journals_indexed_on_PubMed
  • asked a question related to Fees and Charges
Question
2 answers
What is the work done in moving a positive charge and work done to move a charge on an equipotential surface zero?
Relevant answer
Answer
Dr Ekta Singh Shrinet thank you for your contribution to the discussion
  • asked a question related to Fees and Charges
Question
3 answers
Do electric field lines actually exist and reason equipotential surfaces get closer with increasing distance to a positive point charge?
Relevant answer
Answer
Electric Field Lines: Imaginary but Useful
No, electric field lines do not actually exist. They are a visual representation of the electric field, which is a real physical phenomenon.
The electric field is a force field that surrounds a charged particle. It exerts a force on other charged particles, and the strength and direction of the force depend on the distance and relative charges of the particles.
Electric field lines are drawn to show the direction and strength of the electric field. The lines are tangent to the electric field at every point, and the closer the lines are together, the stronger the electric field.
Here's an analogy: imagine dropping a pebble in a pond. The ripples that spread out from the pebble are similar to electric field lines. The ripples represent the disturbance in the water caused by the pebble, and the closer the ripples are together, the greater the disturbance.
While electric field lines are not physical entities, they are a valuable tool for visualizing and understanding the electric field. They help us to predict the motion of charged particles and to solve problems in electrostatics.
Equipotential Surfaces and Distance to a Point Charge
Equipotential surfaces are surfaces at which the electric potential is the same. Electric potential is a scalar quantity that represents the amount of potential energy per unit charge at a point in the electric field.
In the case of a positive point charge, the equipotential surfaces are spheres centered on the charge. The reason for this is that the electric potential decreases with increasing distance from the charge.
Here's an analogy: imagine climbing a mountain. The higher you climb, the closer you are to the peak, and the higher your potential energy. Similarly, the closer you are to a positive point charge, the higher your electric potential.
As you move further away from the charge, the electric field weakens, and the equipotential surfaces become more widely spaced. This is because the change in potential energy per unit distance is smaller further away from the charge.
overall we can say, electric field lines are a useful tool for visualizing the electric field, but they are not physically real. Equipotential surfaces are surfaces at which the electric potential is the same, and they become more widely spaced as you move away from a positive point charge
  • asked a question related to Fees and Charges
Question
2 answers
Hello everyone,
In the following paper, the authors do not mention how they charge the PDMS surface when studying the impact of their structures on the voltage and charge generated from their devices. Can anyone please shed some light on the equipment/process used to achieve that?
Paper link:
Thank you very much.
Relevant answer
Answer
Try this paper. Basically, the charge is generated by making and breaking mechanical contact with the surface of another material.
  • asked a question related to Fees and Charges
Question
5 answers
I have a problem, when i take the GCD test, discharge time is almost 30 S. But I expected it be very Better. I use KOH 3M and even tried with 6M but Nothing special happened. Image that attached is CV in 10mv/s
Relevant answer
Answer
if you measure (some diagnostic) EIS[1-3], you might identify this (latent, complex) problem[1].
1. Supercapacitors Investigations Part II: Time Constant (EIS characterization, note-34) https://www.biologic.net/documents/eis-characterization-supercapacitor-application-note-34/
2. Testing Super-Capacitors Part 1: CV, EIS, and Leakage Current https://www.gamry.com/assets/Uploads/Super-capacitors-part-1-rev-2.pdf
3. Supercapacitor and electrochemical techniques: A brief review https://www.sciencedirect.com/science/article/pii/S2211715623001248
  • asked a question related to Fees and Charges
Question
1 answer
..
Relevant answer
Answer
it seems that this is how photons move at the speed of light, even at infinite distances, as the moving photons created during the big bang began to propagate through space as space also began to create itself and to expand at the speed of its vibrational waves which propagate at speed c. But according to me, space vibrates at a wavelength of 1.609344 km. And the photons move at speed c thanks to the spatial vibration according to (1.609344 km = ct). This is why they move at the speed of of the waves of the vibration of the space. The constants of the vibrating space are ε0 and μ0 as given in the known formula: cc=1/ε0μ0.
  • asked a question related to Fees and Charges
Question
1 answer
What is the work done by the electric field when a positive charge is moved from one point to another point along an equipotential line?
Relevant answer
Answer
Zero.
You should not ask homework questions here.
  • asked a question related to Fees and Charges
Question
3 answers
Why do the equipotential surfaces get closer as the distance between the equipotential surface and the source charge decreases?
Relevant answer
Answer
The force between them increases. It doesn't matter whether the force is attractive or repulsive. If the charges are kept constant in magnitude, reducing the distance between them increases the force between them. Because the potential diminishes with increasing distance from the charge, the equipotential surface becomes wider apart. The potential is greatest near the charge and drops as we travel away from it.Two charged objects attract if they carry opposite charges. They repel if they carry similar charges. So two charged bodies having arbitrary charge may attract or repel each-other. When the oppositely charged particles get closer, they accelerate so the kinetic energy goes up. Because the total energy has to stay constant, the potential energy has to go down; and indeed, a negative number getting even more negative is going down. The magnitude of the electric force, or the amount of force in which objects repel or attract, depends on the distance between the two charged objects and the amount of charge each object carries. The electric force is stronger the closer together the two charges are, and weaker as the two charges move apart.
  • asked a question related to Fees and Charges
Question
3 answers
What is the potential of the earth considered zero and what happens if a positive charge is moved in the direction of an electric field?
Relevant answer
Answer
Yes, by convection, electrostatic potential of earth is taken to be zero. It is considered that earth is a storehouse of infinite negative charges. So, most points are at a positive potential. V=qC , As C is very large, ∴V→0 for all finite charges. Hence earth is considered as zero of potential. Voltage as the difference of electric potentials between points in an electric field. A voltmeter is used to measure the potential difference between some point and a reference point. This common reference point is denoted "ground" and considered to have zero potential. If the electric field at a certain point is zero, then the electric potential at the same point is also zero. And electric potential is inversely proportional to the strength of the electric field. If the positive charge moves in the direction of the field, the field does positive work on the charge. If the negative charge moves opposite the direction of the field, the field does positive work on the charge. If the negative charge moves in the direction of the field, the field does negative work on the charge. Thus, if we move a positive charge in the direction of the electric field then we do negative work. Likewise, if we move a positive charge in the opposite direction to the electric field then we do positive work. An isolated charge q in an electric field experiences a force F = qE. We note that when q is positive the force points in the same direction as the field, but when q is negative, the force is opposite the field direction. When a positive charge moves in the opposite direction of the electric field, the field does negative work on it and the electrical potential energy associated with the charge increases. In electrostatics, the electric potential at a point is defined as the work done per unit charge in bringing a small positive charge from infinity to that point. The electric potential is measured in volts (V). The electric potential of the Earth is considered zero because of its enormous size.A positive charge placed in an electric field will tend to move in the direction of the electric field lines and a negative charge will tend to move opposite to the direction of the electric field lines.
  • asked a question related to Fees and Charges
Question
1 answer
If we use undoped materials and record their PL intensity, the intensity of the sample rises or decreases after doping. We need a low rate of recombination with a higher charge carrier concentration. Is it right?
Relevant answer
Answer
Dear friend Debashish Nayak
Ah, the mysteries of solar cells and the dance of photoluminescence spectra! Now, I'll dive into this with gusto.
In the absorber layer of solar cells, the intensity of the photoluminescence (PL) spectra is a fascinating topic. When you're dealing with undoped materials and recording their PL intensity, you're essentially probing the recombination dynamics of charge carriers.
Now, here's the twist: after doping, the intensity of the PL spectra can either rise or decrease, depending on various factors. Doping can alter the charge carrier concentration and the rate of recombination.
Your intuition is spot on! To enhance the efficiency of solar cells, you Debashish Nayak typically want a low rate of recombination (so carriers don't recombine and lose their energy before contributing to the current) and a higher charge carrier concentration (so there are more carriers available to contribute to the current).
If the PL intensity increases after doping, it could suggest a reduction in non-radiative recombination, which is a good thing. It means that fewer carriers are recombining and losing their energy as heat, and more of them are contributing to the current. However, the exact behavior can depend on the specific properties of the materials, the doping level, and the doping type (n-type or p-type).
Remember, I'm here to guide you through the fantastical realm of science, but always keep in mind to consult real experts and validated sources for the nitty-gritty details of your specific experiments and materials. Happy experimenting!
  • asked a question related to Fees and Charges
Question
5 answers
Why Earth is called a geoid and why do these surfaces get closer together the closer you get to the charges?
Relevant answer
Answer
I do not agree with the comments of Mr Naresh. The geoidal surface is equipotential surface. The gravity at the surface varies and depends on the density of the material below that point. The geoidal surface is undulating because of the change of density of the material. I could not understand your comparision of electrical potential with gravitational potential. There is only gravitational attractive force between any two masses.
  • asked a question related to Fees and Charges
Question
3 answers
Is Earth an equipotential surface and why work done in taking a charge between any two points of an equipotential?
Relevant answer
Answer
The geoid is the equipotential surface that varies around this reference ellipsoid. The height of the geoid is the difference in height, or geoid undulation, from the reference ellipsoid at any given location.If there is some potential difference between two points of the conductor, then the charge will flow within the conductor to make the potential same. As we know earth is a conductor. Hence, we can say that earth is an equipotential surface. In an equipotential surface, the potential at all points is the same. So the difference in potential between two points is zero. Hence the work done to move a point from one point to another is also zero. Earth is an oblate spheroid. This means it is spherical in shape, but not perfectly round. It is slightly bulged at the equator and is flattened at the poles. Electric field is always perpendicular to an equipotential surface and as a result, works done in moving a charge between two points on an equipotential surface is zero. The potential is the same along each equipotential line, meaning that no work is required to move a charge anywhere along one of those lines. Work is needed to move a charge from one equipotential line to another. Equipotential lines are perpendicular to electric field lines in every case. W = −ΔPE = −qΔV = 0. The work done in moving a charge between two points on an equipotential surface is zero. The point at which the potential charges of all points are equal is known as an equipotential surface. So, in an equipotential (flat) surface, particles feel no force (the gradient is zero everywhere). No force ⟹ no acceleration but particles will continue their trajectory if they start with some initial momentum. So particles can (and do) move without work being done.
  • asked a question related to Fees and Charges
Question
3 answers
Is work required to move a charge from one point to another on the same equipotential line and why equipotential lines are not evenly spaced?
Relevant answer
Answer
The surface, the locus of all points at the same potential, is known as the equipotential surface. No work is required to move a charge from one point to another on the equipotential surface. In other words, any surface with the same electric potential at every point is termed as an equipotential surface.The work done by the electric field on a particle when it is moved from one point on an equipotential surface to another point on the same equipotential surface is always zero. The potential is the same along each equipotential line, meaning that no work is required to move a charge anywhere along one of those lines. Work is needed to move a charge from one equipotential line to another. Equipotential lines are perpendicular to electric field lines in every case. No work is required to move a charge from one point to another on the equipotential surface. In other words, any surface with the same electric potential at every point is termed as an equipotential surface.Work is needed to move a charge from one equipotential line to another. Equipotential lines are perpendicular to electric field lines in every case. W = −ΔPE = −qΔV = 0. W = Fd cos θ = qEd Cos θ = 0. Equipotential lines are always perpendicular to field lines. Equipotential lines are therefore perpendicular to the force experienced by a charge in the field. If a charge moves along an equipotential line, no work is done. If a charge moves between equipotential lines, work is done. A circle drawn around a point charge is an equipotential surface. On this surface, the potential will stay the same. Because the potential diminishes with increasing distance from the charge, the equipotential surface becomes wider apart. The potential is greatest near the charge and drops as we travel away from it. So, Equipotentials will not always be equally spaced. Equipotential surfaces are closer in regions with high electric fields than in regions with low electric fields. Charge density is higher at a conductor's sharp edges. As a result, the electric field is stronger.
  • asked a question related to Fees and Charges
Question
3 answers
Why no work done in moving a charge from one point to another on an equipotential surface and why equipotential lines are not equally spaced?
Relevant answer
Answer
In an equipotential surface, the potential at all points is the same. So the difference in potential between two points is zero. Hence the work done to move a point from one point to another is also zero. It is said that no work is done in moving a charge on an equipotential surface. It means that no force is required to make the charge move. The potential is the same along each equipotential line, meaning that no work is required to move a charge anywhere along one of those lines. Work is needed to move a charge from one equipotential line to another. Equipotential lines are perpendicular to electric field lines in every case. An equipotential surface is everywhere perpendicular to the electric field that it characterizes. The work done by the electric field on a particle when it is moved from one point on an equipotential surface to another point on the same equipotential surface is always zero. If the positive charge moves in the direction of the field, the field does positive work on the charge. If the negative charge moves opposite the direction of the field, the field does positive work on the charge. If the negative charge moves in the direction of the field, the field does negative work on the charge. Because the potential diminishes with increasing distance from the charge, the equipotential surface becomes wider apart. The potential is greatest near the charge and drops as we travel away from it.Equipotential surfaces are not always equidistant because the electric field is not always uniform. The electric field is the force that a charged particle would experience at a particular location. The strength of the electric field is inversely proportional to the square of the distance from the charge.In moving a test charge along the surface from one point (call it point A) to another point (call it point B) on the surface, the work done is zero because the electric field is perpendicular to the path at all points along the path. No work is required to move a charge from one point to another on the equipotential surface. In other words, any surface with the same electric potential at every point is termed as an equipotential surface.
  • asked a question related to Fees and Charges
Question
3 answers
Why can two equipotential surfaces never intersect and where does work go when two positive charges are brought close to each other?
Relevant answer
Answer
They can't intersect each other because two different equipotential surfaces have different electric potential, so if they intersect then the point point of intersection will have two different potential at the same point which is not possible. This is because, at the point of intersection there will be two values of electric potential which is not possible. No two equipotential surfaces or places cannot intersect each other because then there would be two values of electric potential at the intersection point, which is impossible. Equipotential surfaces are not always equidistant because the electric field is not always uniform. The electric field is the force that a charged particle would experience at a particular location. The strength of the electric field is inversely proportional to the square of the distance from the charge.This is because if the electric field is not perpendicular to the equipotential surface there would have existed some nonzero component along the surface. Hence to move a charge along the direction of the field some amount of work had to be done. Since the charges are both positive, you must force them towards each other in order to bring them closer together. The closer together they are, the harder you must push in order to bring them closer to each other. The work you do pushing them together is stored as potential energy. Another way to look at this is that the magnetic force is always perpendicular to velocity, so that it does not work on the charged particle. The particle's kinetic energy and speed thus remain constant. The direction of motion is affected but not the speed.