Log in

Relevant bibliographies by topics / Method of equivalent charges / Journal articles

To see the other types of publications on this topic, follow the link: Method of equivalent charges.

Journal articles on the topic 'Method of equivalent charges'

Author: Grafiati

Published: 30 May 2022

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Method of equivalent charges.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

ZENG, XIAOXIONG. "FERMIONS TUNNELING OF DYONIC PARTICLES FROM THE CHARGED AND MAGNETIZED BLACK HOLES." Modern Physics Letters A 24, no. 20 (2009): 1605–15. http://dx.doi.org/10.1142/s0217732309029958.

Full text

Abstract:

The fermions tunneling formulism of Kerner and Mann is extended to the case of black holes with electric and magnetic charges. As the electric and magnetic fields would couple with gravity field, we introduce the Dirac equation of charged and magnetized particles. We study the spin-up particles from the Reissner–Nordström black hole with magnetic charges and spin-down particles from the Kerr–Newman–Kasuya black hole and obtain the corresponding emission temperatures. In particular, we also provide a simplified method by defining an equivalent charge and gauge potential to further discuss tunne

APA, Harvard, Vancouver, ISO, and other styles

2

Argyriou, DN, and CJ Howard. "Evaluation of Electrostatic Potentials and Madelung Constants in Ionic Crystals by the Method of Spherically Symmetric Equivalent Charges." Australian Journal of Physics 45, no. 2 (1992): 239. http://dx.doi.org/10.1071/ph920239.

Full text

Abstract:

A simple derivation is given of the electrostatic potential in a periodic three-dimensional array of spherically symmetric charge distributions. By noting the equivalence in electrostatic calculations of point charges and suitably chosen spherical charge distributions, this leads to expressions for electrostatic potentials and (Madelung) interaction energies in ionic crystals. The expressions involve sums in reciprocal space only. The approach is illustrated by the calculation of Madelung constants for NaCl and CaF2, and the electrostatic interaction energy of Ti02 (rutile). A previous controv

APA, Harvard, Vancouver, ISO, and other styles

3

Araujo, Eduardo Nozawa Caetano de, and Homero Delboni Jr. "Development of a method to measure charges in tumbling mills." Rem: Revista Escola de Minas 67, no. 3 (2014): 311–16. http://dx.doi.org/10.1590/s0370-44672014000300011.

Full text

Abstract:

Tumbling mills are often taken as the object of optimization studies because they are a type of equipment that consume large amounts of energy. Among the current available resources to conduct such studies, mathematic modelling presents great efficiency due to its low cost, speed and reliability. The total charge and grinding media charge are very important variables to conduct modelling exercises that aim at power draw and product size distribution forecasting. However, the common measurement methods require people entering the equipment, which carries a number of adversities related to confi

APA, Harvard, Vancouver, ISO, and other styles

4

Kazantsev, V. P., and E. A. Lysenko. "Variational estimates in electrostatics. Gauss's principle and the method of equivalent charges." Russian Physics Journal 38, no. 2 (1995): 127–33. http://dx.doi.org/10.1007/bf00560234.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

YAN, ZHAN-YUAN, JIN-YING MA, and XIAO-HONG ZHANG. "QUANTIZATION OF MESOSCOPIC QUARTZ PIEZOELECTRIC CRYSTAL EQUIVALENT CIRCUIT." Modern Physics Letters B 25, no. 11 (2011): 847–53. http://dx.doi.org/10.1142/s0217984911026139.

Full text

Abstract:

In the framework of an advanced quantum theory for mesoscopic electric circuits in accord with the discreteness of electric charges, a mesoscopic quartz piezoelectric crystal equivalent circuit is quantized. To resolve the finite difference Schrödinger equation, an improved parameter perturbative method is proposed when WKB and perturbative method are inapplicable. With this method, the energy spectrum and wavefunctions of the system are obtained and used to calculate current quantum fluctuation as an application. The new method would be helpful to the application of the mesoscopic circuits qu

APA, Harvard, Vancouver, ISO, and other styles

6

Pai, Kai-Jun. "A Reformatory Model Incorporating PNGV Battery and Three-Terminal-Switch Models to Design and Implement Feedback Compensations of LiFePO4 Battery Chargers." Electronics 8, no. 2 (2019): 126. http://dx.doi.org/10.3390/electronics8020126.

Full text

Abstract:

This study developed and implemented a LiFePO4 battery pack (LBP) rapid charger. Using the three-terminal switch and partnership for a new generation of vehicles (PNGV) battery models, this study could obtain a small-signal system matrix to derive transfer functions and further analyze frequency responses for the charge voltage and current loops; therefore, both voltage and current feedback controllers could be designed to fulfill the constant-voltage (CV) and constant-current (CC) charges. To address practical applications, the proposed equivalent model also considered the wire resistance-ind

APA, Harvard, Vancouver, ISO, and other styles

7

D., G. Koliushko, S. Rudenko S., O. Tyutyuma S., and V. Vorobiov B. "Determination of the electric field strength of high-voltage substations." Electrical Engineering & Electromechanics 2023, no. 5 (2023): 63–68. https://doi.org/10.20998/2074-272X.2023.5.09.

Full text

Abstract:

<em>The electric field strength is one of the main factors influencing sensitive microprocessor equipment and personnel on power stations and substations, power lines. Determining its level is an important applied task for ensuring the safe operation of electrical installations. <strong>The aim </strong>is to develop calculation relationships for determining the electric field strength created by the busbar of high-voltage substations in the working areas of personnel. The solution of the problem was based on the use of the method of equivalent charges to determine the strength of th

APA, Harvard, Vancouver, ISO, and other styles

8

Marín, Juan Andrés, Rafael Rodríguez, María B. Díaz, and Saray Antón. "Empirical Attenuation Law for Air Blast Waves Due to the Detonation of Explosives Outdoors." Applied Sciences 12, no. 18 (2022): 9139. http://dx.doi.org/10.3390/app12189139.

Full text

Abstract:

The detonation of explosives in the open air was studied, analyzing different amounts of explosives detonated at different distances, monitoring the overpressure or air blast wave generated with the aim of determining a model, which allows to establish safety zones. A series of tests measuring the air wave with different loads and sensors placed at various distances from the origin of the explosion were carried out. The work was focused on designing full-scale trials that allowed to develop a predictive empirical method based on the calculation model of the equivalent mass of TNT. A total of 1

APA, Harvard, Vancouver, ISO, and other styles

9

Chen, Shen Li, and Yet Fan Chang. "Lateral Non-Uniformity Charges Influence on Interface Trap Density (D_it) by Terman Method in the nMOS Fabrication." Advanced Materials Research 690-693 (May 2013): 1846–50. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.1846.

Full text

Abstract:

Generally speaking, the oxide interface quality can be determined by the interface trap density (Dit) distribution. In this paper, the Dit quantity obtained from the Terman method, which it is assumed that the Dit is equal to zero at the beginning for simulating the Dit effect in ultra-thin oxide. However, the lateral non-uniformity charges have existed in the oxide layer, which maybe obtained an equivalent Dit density not equal to zero also producing an equivalent Dit value. And, such faked Dit will be resulted in an error in high frequency measurement. Fortunately, it can be solved by differ

APA, Harvard, Vancouver, ISO, and other styles

10

Sun, Zhengwu, Payel Sen, Jules Hamers, Thomas Seidel, Andreas Dendorfer, and Petra Kameritsch. "Optimized Conditions for Electrical Tissue Stimulation with Biphasic, Charge-Balanced Impulses." Bioengineering 12, no. 3 (2025): 234. https://doi.org/10.3390/bioengineering12030234.

Full text

Abstract:

The cultivation of excitable cells typically profits from continuous electrical stimulation, but electrochemical consequences are mostly harmful and must be minimized. The properties of the electrode materials and stimulation impulses are key. Here, we developed an easy method to analyze the electrochemical impact of biphasic, current-controlled impulses, applied via graphite electrodes, using phenol red as the redox indicator. We also tested the stimulation conditions for the long-term cultivation of myocardial tissue. The colorimetric assay was able to detect ±0.2% deviations in typical posi

APA, Harvard, Vancouver, ISO, and other styles

11

Apostol, M. "Fast Atom Ionization in Strong Electromagnetic Radiation." Zeitschrift für Naturforschung A 73, no. 5 (2018): 461–66. http://dx.doi.org/10.1515/zna-2017-0455.

Full text

Abstract:

AbstractThe Goeppert–Mayer and Kramers–Henneberger transformations are examined for bound charges placed in electromagnetic radiation in the non-relativistic approximation. The consistent inclusion of the interaction with the radiation field provides the time evolution of the wavefunction with both structural interaction (which ensures the bound state) and electromagnetic interaction. It is shown that in a short time after switching on the high-intensity radiation the bound charges are set free. In these conditions, a statistical criterion is used to estimate the rate of atom ionization. The r

APA, Harvard, Vancouver, ISO, and other styles

12

Ilyasov, V. Kh, A. N. Lachinov, and D. D. Karamov. "INFLUENCE OF THE THICKNESS OF POLYDIPHENYLENE PHTHALIDE FILMS ON THE SPECTRUM OF DEPOLARIZATION CURRENTS OF MULTILAYER STRUCTURES." Izvestia Ufimskogo Nauchnogo Tsentra RAN, no. 1 (March 12, 2024): 61–66. http://dx.doi.org/10.31040/2222-8349-2024-0-1-61-66.

Full text

Abstract:

The depolarization currents of multilayer polymer films of polydiphenylene phthalide were measured using the thermally stimulated depolarization (TSD) method in the range from 170 to 400 K. The solution concentration was 2.5 and 5 wt.%. Each layer of polymer film was pre-dried at room temperature, then annealed in an oven. The number of layers of polymer film was 1, 2, 3 and 7 layers for 2.5 wt.%. and 1, 2, 3, 5 and 7 layers for 5 wt.%. The polarizing electric field strength was 2.5 × 105 V/cm. The rate of temperature change was 5 K/min. Based on experimental data, the dependence of the temper

APA, Harvard, Vancouver, ISO, and other styles

13

Zeng, Xiaoqing, Zilin He, Yali Wang, Yongfei Wu, and Ao Liu. "An Effective Method of Equivalent Load-Based Time of Use Electricity Pricing to Promote Renewable Energy Consumption." Mathematics 12, no. 9 (2024): 1408. http://dx.doi.org/10.3390/math12091408.

Full text

Abstract:

The variability and intermittency inherent in renewable energy sources poses significant challenges to balancing power supply and demand, often leading to wind and solar energy curtailment. To address these challenges, this paper focuses on enhancing Time of Use (TOU) electricity pricing strategies. We propose a novel method based on equivalent load, which leverages typical power grid load and incorporates a responsibility weight for renewable energy consumption. The responsibility weight acts as an equivalent coefficient that accurately reflects renewable energy output, which facilitates the

APA, Harvard, Vancouver, ISO, and other styles

14

Li, Cheng Bing, Jin Xiong, and Ming Yong Ma. "Theoretical and Experimental Research on Perforation Remnant Energy." Advanced Materials Research 339 (September 2011): 379–85. http://dx.doi.org/10.4028/www.scientific.net/amr.339.379.

Full text

Abstract:

During the perforating and testing combination, the tubing, packer and casing are strongly impacted by shock-wave generated from oil perforators would be damaged. The energy conversion and energy equivalent theories and the underwater explosion energy method are applied to investigate the perforation remnant energy. The theoretical analysis results indicate that the explosion remnant energy of the perforators is the main energy source causing damage of the tubing, packer and casing and the explosion process of the perforators with guns in the oil well can be simplified to the explosion of ordi

APA, Harvard, Vancouver, ISO, and other styles

15

Alshareef, Sami. "A Novel Smart Charging Method to Mitigate Voltage Fluctuation at Fast Charging Stations." Energies 15, no. 5 (2022): 1746. http://dx.doi.org/10.3390/en15051746.

Full text

Abstract:

The research presented in this paper focuses on the impact of fast charging stations (FCSs) on voltage quality. When the operation of FCSs causes a voltage fluctuation and light flicker, the FCSs may be disconnected, as per the utility general standard practice, which results in financial loss represented by FCS downtime. FCS downtime can be avoided by mitigating voltage fluctuation and light flicker. Flicker mitigation devices that are available in the market are characterized by their high total annual equivalent costs. As an alternative, a novel smart charging method is proposed in this stu

APA, Harvard, Vancouver, ISO, and other styles

16

Matthew, Alpha, Muhammad Jaafar, Haruna Shalangwa, and Mujaheed Muhammad. "Investigation of the Electrochemical Properties of 3D Recyclable Aluminium doped LiMn2O4 Electrode: Improved Power and Energy Densities for Lithium-ion Battery Usage." Nigerian Journal of Physics 33, no. 4 (2024): 39–47. https://doi.org/10.62292/njp.v33i4.2024.308.

Full text

Abstract:

The Composites of Al-Doped LiMn2O4; Al0.1:(LiMn2O4)0.9 and AI0.3:(LiMn2O4)0.7, were prepared using the hydrothermal method and drop casting deposition technique. The electrochemical performance of the Al-doped LiMn2O4 composite as a promising anode material for lithium-ion batteries was characterised by cyclic voltammetry analysis, electrochemical impedance spectroscopy and galvanostatic charge discharge analysis. The anodes' material exhibits a reversible capacity loss, which can be primarily linked to reverse reactions within the solid electrolyte interface formation, aluminium adsorption in

APA, Harvard, Vancouver, ISO, and other styles

17

Xu, Y., Z. Jiang, Q. Wang, et al. "Three dimensional magnetostatic field calculation using equivalent magnetic charge method." IEEE Transactions on Magnetics 27, no. 6 (1991): 5010–12. http://dx.doi.org/10.1109/20.278723.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Zhan, A. V., N. A. Drokin, N. M. Nichkova, and Zh M. Moroz. "Impedance spectroscopy method for testing moistened wheat crops." Bulletin of NSAU (Novosibirsk State Agrarian University), no. 2 (July 5, 2022): 59–68. http://dx.doi.org/10.31677/2072-6724-2022-63-2-59-68.

Full text

Abstract:

The authors presented the results of a study of the electrical and dielectric characteristics of wetted wheat grains by measuring their complex electrical resistance (impedance Z) in a wide frequency range (from 1 Hz to 100 MHz). The results of electrical impedance measurements of grains with surface or volumetric moisture content under different experimental conditions can provide useful information on the properties of the biological tissues of grain crops. These results can also be used to develop a new type of impedance sensor for testing grain quality and moisture content. The authors use

APA, Harvard, Vancouver, ISO, and other styles

19

Fan, Man, Xi Ping Wang, Wei Li, Li Guo, and Yu Min Yang. "Analysis on Axial Magnetic Force of Permanent Axial Bearing by Axial Magnetized." Applied Mechanics and Materials 150 (January 2012): 12–16. http://dx.doi.org/10.4028/www.scientific.net/amm.150.12.

Full text

Abstract:

Permanent magnet axial bearing axial stiffness analysis is critical in the design process of permanent magnetic bearing. This article establishes the axial magnetic model through the equivalent magnetic charge method, but the equivalent magnetic charge method solving the axial force need work out four complicated quadruple integrals. The calculation cycle the traditional method is too long, and even cannot get analytical solution. On the contrary, the method of through Forcal language programming to approximate computation bearing axial force makes the solving process simplification. The stiff

APA, Harvard, Vancouver, ISO, and other styles

20

Davood, Farmanzadeh, and Tabari Leila. "Glycyrrhizic acid and its salts as antioxidant; A computational investigation." Journal of Indian Chemical Society Vol. 94, Mar 2017 (2017): 261–67. https://doi.org/10.5281/zenodo.5616995.

Full text

Abstract:

Department of Physical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, 47416-95447, Islamic Republic of Iran <em>E-mail</em> : d.farmanzad@umz.ac.ir Fax : 98-1135302350 <em>Manuscript received online 03 November 2013, accepted 15 October 2016</em> In this work, the density functional theory method were used to investigate the ground state energies, spin density, atomic charge distribution, HOMO-LUMO gap, O-H bond dissociation enthalpies (BDEs) and ionization potential (IP) of the glycyrrhizic acid (GL) and its monolithium, monosodium, monopotassium and monoammonium salts i

APA, Harvard, Vancouver, ISO, and other styles

21

Zhang, Yan, Huaying Su, Rongrong Wang, Mingqing Wang, Xianqiang He, and Ning Wang. "Constant power adaptive control of photovoltaic generator unit considering equivalent charge state." Journal of Physics: Conference Series 2823, no. 1 (2024): 012067. http://dx.doi.org/10.1088/1742-6596/2823/1/012067.

Full text

Abstract:

Abstract To address the impact of factors such as light intensity, temperature, equipment aging, and faults on the power output stability of photovoltaic power generation units during operation, a constant power adaptive control method for photovoltaic power generation units based on equivalent charge state is proposed. By real-time monitoring of the output voltage, current, and other parameters of photovoltaic power generation units, we calculate their current equivalent charge state. Based on the changes in the equivalent charge state, the control strategy of the photovoltaic power generatio

APA, Harvard, Vancouver, ISO, and other styles

22

Wiig, Helge, and Olav Tenstad. "Interstitial exclusion of positively and negatively charged IgG in rat skin and muscle." American Journal of Physiology-Heart and Circulatory Physiology 280, no. 4 (2001): H1505—H1512. http://dx.doi.org/10.1152/ajpheart.2001.280.4.h1505.

Full text

Abstract:

Volume exclusion, i.e., the space not available for a specific probe, may be dependant on the probe charge. Therefore, interstitial exclusion was measured for positively and negatively charged immunoglobulin (IgG) in skin and muscle of rats by using a continuous infusion method (30). Steady-state concentration of125I-labeled IgG 1 (pI = 8.7) and131I- labeled IgG 4 (pI = 6.6) was maintained by infusion of tracer for 120–168 h with an implanted osmotic pump. At the end of the infusion period and before tissue sampling, the rat was anesthetized and nephrectomized, and51Cr-labeled EDTA was injecte

APA, Harvard, Vancouver, ISO, and other styles

23

Hong, Chong, and Cho. "Theoretical Study on Geometries of Electrodes in Laboratory Electrical Resistivity Measurement." Applied Sciences 9, no. 19 (2019): 4167. http://dx.doi.org/10.3390/app9194167.

Full text

Abstract:

Electrical resistivity tests have been widely conducted in multiple scales, from a few centimeters to kilometers. While electrode spacing is used to define field resistance, laboratory measurements in a limited space need to consider electrode geometry. However, there are no studies that theoretically explore the effects of the geometries of electrodes and container size on laboratory electrical resistivity measurements. This study formulates a theoretical electrical resistance for the geometry of cylindrical electrodes and the size of a non-conductive container with the method of image charge

APA, Harvard, Vancouver, ISO, and other styles

24

Menshikov, Ya A. "Measuring the Equivalent Series Resistance of Chemical Current Sources by the Current Interruption Method for a Given Time." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 5 (104) (October 2022): 105–19. http://dx.doi.org/10.18698/1812-3368-2022-5-105-119.

Full text

Abstract:

It is proposed to measure the equivalent series resistance of various chemical current sources by the method of periodic interruption of the charge current or of the discharge current for a given time period. The current interruption frequency and duration could be selected from a wide range of values. By changing the current interruption duration, it becomes possible to significantly vary conditions in measuring the equivalent series resistance. Thus, when the current is interrupted for 0.5 ms, the proposed method approaches the resistance measurement by the alternating current method with a

APA, Harvard, Vancouver, ISO, and other styles

25

Grisaro, Hezi Y., and Idan E. Edri. "Numerical investigation of explosive bare charge equivalent weight." International Journal of Protective Structures 8, no. 2 (2017): 199–220. http://dx.doi.org/10.1177/2041419617700256.

Full text

Abstract:

Peak overpressure and impulse are the most important parameters in the explosive performance estimation. Available models commonly consider trinitrotoluene explosive as the standard charge. In this article, the trinitrotoluene equivalency factor is studied through verified one-dimensional numerical simulations. The equivalency factors for impulse and overpressure are different and found to be constant with the scaled distance (3–40 m/kg1/3), which means that a unique value for the equivalency factor is suitable for the equivalency factor calculation for each distance. Comparison of the equival

APA, Harvard, Vancouver, ISO, and other styles

26

Bhupendra, Singh Kushwah, Kumar D., kumar Arvind, Alam Aftab, and Ahmad Bhat Rayees. "Experimental, Spectral analysis and TheoreticalStudies of Novel S-methyl--N- (5-bromo-2-hydroxy-3-ethoxyphenylmethylene) dithiocarbazate Schiff base." International Journal of Innovative Science and Research Technology 7, no. 12 (2023): 1331–41. https://doi.org/10.5281/zenodo.7514539.

Full text

Abstract:

Schiff bases or azomethenes are most valuable group of biomolecules, there novel synthesized dithiocabazate derivatives have been found to reveal both remarkable biological activities and other variety of valuable applications. A hard-soft nitrogen-sulphur containing Novel Schiff base derived from 5-bromo,2- hydroxy-3-methoxy benzaldehyde and Smethyldithiocarbazate was prepared by condensation method from their equivalent molar amounts.The structure of prepared compounds was investigated by UV-Vis,FT-IR, 1H-NMR and the thermal stability of the Schiff base was obtained upto 800 0 c in inert nit

APA, Harvard, Vancouver, ISO, and other styles

27

Sansom, S. C., and J. D. Stockand. "Differential Ca2+ sensitivities of BK(Ca) isochannels in bovine mesenteric vascular smooth muscle." American Journal of Physiology-Cell Physiology 266, no. 5 (1994): C1182—C1189. http://dx.doi.org/10.1152/ajpcell.1994.266.5.c1182.

Full text

Abstract:

The planar bilayer method was used to characterize the properties of large Ca(2+)-activated K+ [BK(Ca)] channels of smooth muscle from bovine mesenteric arteries. We found two isochannels of BK(Ca), differing in sensitivity to Ca2+ on the intracellular side of the channel. The first isochannel, Kc1, had a single-channel conductance of 287 +/- 8 pS and required a potential of -33 mV to activate to an open probability (Po) of 0.5 with 1 microM Ca2+. The single-channel conductance of the second isochannel, Kc2 (282 +/- 8 pS), was not statistically different from that of Kc1 but required a potenti

APA, Harvard, Vancouver, ISO, and other styles

28

Nauwelaers, Bart, Hasan Ymeri, and Karen Maex. "Efficient procedure for capacitance matrix calculation of multilayer VLSI interconnects using quasi-static analysis and Fourier series." Journal of Telecommunications and Information Technology, no. 2 (June 30, 2002): 40–44. http://dx.doi.org/10.26636/jtit.2002.2.124.

Full text

Abstract:

In this paper, we present a new approach for capacitance matrix calculation of lossy multilayer VLSI interconnects based on quasi-static analysis and Fourier projection technique. The formulation is independent from the position of the interconnect conductors and number of layers in the structure, and is especially adequate to model 2D and 3D layered structures with planar boundaries. Thanks to the quasi-static algorithms considered for the capacitance analysis and the expansions in terms of convergent Fourier series the tool is reliable and very efficient; results can be obtained with relativ

APA, Harvard, Vancouver, ISO, and other styles

29

Franke-Lang, Robert, and Julia Kowal. "Analysis of Electrochemical Impedance Spectroscopy on Zinc-Air Batteries Using the Distribution of Relaxation Times." Batteries 7, no. 3 (2021): 56. http://dx.doi.org/10.3390/batteries7030056.

Full text

Abstract:

Zinc-air batteries could be a key technology for higher energy densities of electrochemical energy storage systems. Many questions remain unanswered, however, and new methods for analyses and quantifications are needed. In this study, the distribution of relaxation times (DRT) based on ridge regression was applied to the impedance data of primary zinc-air batteries in a temperature range of 253 K and 313 K and at different State-of-Charges for the first time. Furthermore, the problem of the regularization parameter on real impedance spectroscopic measurements was addressed and a method was pre

APA, Harvard, Vancouver, ISO, and other styles

30

Li, Changchang. "Study on Second-order RC Model Charge State Estimation Method for Lithium Battery Based on EKF Algorithm." Academic Journal of Science and Technology 12, no. 3 (2024): 1–5. http://dx.doi.org/10.54097/xt521f94.

Full text

Abstract:

In order to improve the estimation accuracy of the state of charge (SOC) of lithium-ion batteries, this paper proposes a SOC estimation method based on the second-order RC equivalent circuit model and the extended Kalman filter (EKF) algorithm. Firstly, the second-order RC equivalent circuit model is selected as the research object in this paper, and the parameters of the second-order RC model are identified by combining the hybrid pulse charging and discharging test and the 1stopt software, and then the extended Kalman filtering algorithm is applied under the MATLAB environment to estimate th

APA, Harvard, Vancouver, ISO, and other styles

31

The, Duc Ngo, Thang Dam Trong, and Thuy Ngo Ngoc. "Research on the method of measuring blasting stress waves in water-filled boreholes." Edelweiss Applied Science and Technology 9, no. 3 (2025): 1692–704. https://doi.org/10.55214/25768484.v9i3.5680.

Full text

Abstract:

Accurately measuring stress waves generated during blasting is crucial for understanding rock failure mechanics. Traditional methods rely on large water-filled pits for measurement, which are costly and impractical for small-scale experiments. This study introduces a novel approach using water pressure sensors in small-diameter (14 mm) boreholes, providing a cost-effective and scalable alternative. Numerical simulations and experimental tests were conducted to validate this method. A conversion coefficient of 0.598 was derived to translate borehole measurement results into equivalent values fo

APA, Harvard, Vancouver, ISO, and other styles

32

Hou, En Guang, Xin Qiao, and Guang Min Liu. "Model Identification of Power Lithium-Ion Battery Based on Laplace Transform." Advanced Materials Research 953-954 (June 2014): 775–79. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.775.

Full text

Abstract:

In allusion to nonlinear characteristic of power lithium-ion battery, presented a method for identifying of power lithium-ion battery based on Laplace transform. First, analyzed the characteristics of the equivalent circuit model of power lithium-ion battery, determined the model of second-order RC equivalent circuit; Second, established equation of second-order RC equivalent circuit and conducted a Laplace transform; Third,using the massive data of charge-discharge test,model parameters was identified by least-squares method; Simulation results show that the method can effectively identify th

APA, Harvard, Vancouver, ISO, and other styles

33

Qi, Yutang, Chaojun Yang, Yiwen Zhang, Chao Guo, and Amberbir Wondimu Tadesse. "Torque Characteristics Analysis of Slotted-Type Axial-Flux Magnetic Coupler in the Misalignment State." Machines 12, no. 11 (2024): 751. http://dx.doi.org/10.3390/machines12110751.

Full text

Abstract:

In this article, a simple and practical magnetic equivalent charge model is proposed to predict the torque of a slotted-type axial-flux magnetic coupler (SAMC) under conditions of radial misalignment, angle misalignment, and synthetic misalignment. The magnetic field generated by the permanent magnet (PM) disk and the induced magnetic field generated by the slotted conductor sheet (CS) are equivalent to the surface magnetic charge, respectively. Particularly, the induced magnetic field produced by eddy current considering skin depth in the conductor sheet is introduced into the magnetic equiva

APA, Harvard, Vancouver, ISO, and other styles

34

Liu, Xiaolong, Yongqiang Chai, Bo Wu, Liping Liu, and Chunru Wang. "A novel empirical method for quickly estimating the charge-transfer state of fullerene-donor derivatives." Physical Chemistry Chemical Physics 21, no. 44 (2019): 24291–95. http://dx.doi.org/10.1039/c9cp05257g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Roy, Archisman, and Syed Khalid Mustafa. "Distribution of Charges on a Flat Disk as the Application of Far-Ranging Mathematics." Trends in Sciences 19, no. 16 (2022): 5691. http://dx.doi.org/10.48048/tis.2022.5691.

Full text

Abstract:

The foremost grail of this academic indagation is to delineate a mathematical expression of the normalised charge density over a flat disk. Aiming to ensue, firstly, 2 different frameworks have been dealt with to formulate the potential distribution which allows stability of a non-uniform charge distribution. At first, a logical but mathematically toilsome integral method has been approached. Out of the unyielding territory, we reduced the expression into algebraical functions using the Bessel coefficient and Green’s theorem, eventually inferring a new mathematical equivalence. Subsequently, t

APA, Harvard, Vancouver, ISO, and other styles

36

Cui, Zhen Ping, Yong Xin Qin, and Hao Li. "Prediction Method of Lithium Battery's State of Charge Based on No Trace of Calman Filter." Advanced Materials Research 912-914 (April 2014): 1888–91. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.1888.

Full text

Abstract:

The Thevenin equivalent circuit model is established for single lithium battery,current and voltage data to identify the parameters of the equivalent circuit is obtained by the discharge experiment, and the open circuit voltage and charge state relationship curve was obtained by curve fitting.On this basis, design the extended Kalman filter algorithm and unscented Kalman filter algorithm on the lithium battery state of charge, then use Matlab/Simulik simulation, the results of the state prediction of the two different algorithms are compared. The analysis results show that two kinds of algorit

APA, Harvard, Vancouver, ISO, and other styles

37

Zhang, Bingzhan, Qinglong Meng, Juncheng Wu, and Yaoyao Ni. "An Adaptive Adjustment Method of Equivalent Factor Considering Speed Predict Information." World Electric Vehicle Journal 12, no. 4 (2021): 211. http://dx.doi.org/10.3390/wevj12040211.

Full text

Abstract:

Although the energy management strategies at present have achieved a good effect, they still have their limitations, so there is still room for further improvement to improve the fuel economy of hybrid electric vehicles (HEV). This paper proposes an adaptive equivalent consumption minimization strategy (ECMS) based on speed prediction, which can distribute power more reasonably and improve the power balance and fuel economy. The driving speed reflects the operation of the road and driver during the driving process. Under the motor assisted energy management control strategy, knowing all workin

APA, Harvard, Vancouver, ISO, and other styles

38

RIOS, L. A., and P. K. SHUKLA. "Equivalent charge of photons in a very dense quantum plasma." Journal of Plasma Physics 74, no. 1 (2008): 1–7. http://dx.doi.org/10.1017/s0022377807006800.

Full text

Abstract:

AbstractThe equivalent charge of photons in dense unmagnetized and magnetized Fermi plasmas is determined through the plasma physics method. This charge is associated with the polarization of the medium caused by the ponderomotive force of the electromagnetic waves. Relations for the coupling between the electron plasma density perturbation and the radiation fields are derived for unmagnetized and magnetized plasmas, taking into account the quantum force associated with the quantum Bohm potential in dense Fermi plasmas. The effective photon charge is then determined. The effects of the ion mot

APA, Harvard, Vancouver, ISO, and other styles

39

DOMOZHIROV, D. V., V. KH PARCHMENT, A. A. POLINOV, and I. A. PYTALEV. "THE INFLUENCE OF RELIEF ON THE SHOCK-AIR WAVE EFFECT DURING BLASTING OPERATIONS IN A QUARRY." News of the Tula state university. Sciences of Earth 2, no. 1 (2023): 147–57. http://dx.doi.org/10.46689/2218-5194-2023-2-1-147-157.

Full text

Abstract:

The heterogeneity of the relief of the surface of the location of the main mining structures during blasting leads to an increase in the impact of the air-blast effect on the protected objects adjacent to the quarry field. A correction is proposed that takes into account the volume of the disturbance actually covered at a distance (r, m) in comparison with the disturbance covered by it due to the relief inhomogeneity along the path of air-blast propagation. The ratios of corrections for the relief are presented depending on the type of heterogeneity and its location relative to the protected o

APA, Harvard, Vancouver, ISO, and other styles

40

Wang, Liangquan, Fei Shang, and Deren Kong. "Study on Correlation Characteristics of Static and Dynamic Explosion Temperature Fields." Frontiers Research of Architecture and Engineering 2, no. 4 (2019): 6. http://dx.doi.org/10.30564/frae.v2i4.1545.

Full text

Abstract:

The warheads such as missiles and artillery shells have a certain speed of motion during the explosion. Therefore, it is more practical to study the explosion damage of ammunition under motion. The different speeds of the projectiles have a certain influence on the temperature field generated by the explosion. In this paper, AUTODYN is used to simulate the process of projectile dynamic explosion. In the experiment, the TNT spherical bare charges with the TNT equivalent of 9.53kg and the projectile attack speed of 0,421,675,1020m/s were simulated in the infinite air domain. The temperature fiel

APA, Harvard, Vancouver, ISO, and other styles

41

Qin, Taichun, Hua Shao, Yuege Zhou, and Guangming Zhao. "Applicability analysis of equivalent circuit model parameter identification method for lithium-ion batteries." Journal of Physics: Conference Series 2993, no. 1 (2025): 012077. https://doi.org/10.1088/1742-6596/2993/1/012077.

Full text

Abstract:

Abstract The equivalent circuit model (ECM) of lithium-ion batteries is commonly utilized for state of charge (SOC) online estimation. In recent years, researchers have proposed different ECM identification methods according to their own needs, so the application scenarios of each method are different. The ECM identification consists of two steps: (1) obtaining the open circuit voltage curve and (2) obtaining the parameters of ECM. Since the OCV curve acquisition process is common, the difference between these estimation methods lies in the different parameter estimation methods. Since high dy

APA, Harvard, Vancouver, ISO, and other styles

42

Lukács, Zoltán, Dávid Baccilieri, and Tamás Kristóf. "The Experimental Verification of a Generalized Model of Equivalent Circuits." Hungarian Journal of Industry and Chemistry 49, no. 1 (2021): 1–8. http://dx.doi.org/10.33927/hjic-2021-01.

Full text

Abstract:

The determination of typical parameters of electrochemical systems, e.g. the polarization or charge transfer resistances, can be critical with regard to the application of Electrochemical Impedance Spectroscopy (EIS) if the lower frequency range is biased as a result of transport and/or adsorption/desorption processes. In such cases, the charge transfer resistance should be assessed from the higher frequency range which is typically inadequate in itself as an input for nonlinear parameter fitting. In earlier publications, an alternative mathematical treatment of both the Equivalent Circuit (EC

APA, Harvard, Vancouver, ISO, and other styles

43

RIOS, L. A., P. K. SHUKLA, and A. SERBETO. "Photon equivalent charge in a two-electron temperature Fermi plasma." Journal of Plasma Physics 75, no. 1 (2009): 3–7. http://dx.doi.org/10.1017/s0022377808007289.

Full text

Abstract:

AbstractThe equivalent photon charge in a two-electron temperature Fermi plasma is determined through the plasma physics method. The Fermi plasma has distinct populations of hot and cold electrons that are described by a quantum hydrodynamic model which accounts for the quantum statistical pressure of the hot electrons and the quantum force acting on the two electron fluids. Relations for the coupling between the electron plasma density fluctuations and the radiation fields are derived, and the effective photon charge is then calculated.

APA, Harvard, Vancouver, ISO, and other styles

44

DeVito, Robert G., Benjamin G. Ke, Kristen Stephens, Scott T. Hollenbeck, Chris A. Campbell, and John T. Stranix. "Financial Effect of Enhanced Recovery After Surgery in Autologous Breast Reconstruction." Annals of Plastic Surgery 94, no. 6S (2025): S549—S554. https://doi.org/10.1097/sap.0000000000004391.

Full text

Abstract:

Background Enhanced Recovery After Surgery (ERAS) pathways have become increasingly common in surgery, but the ERAS financial impact on autologous breast reconstruction has not been defined. Methods This study performed a retrospective review of consecutive autologous breast reconstructions (July 2017 to June 2022; 264 patients, 156 pre-ERAS implementation and 108 post-ERAS implementation). Clinical outcomes included length of stay (LOS), ICU length of stay (ICU LOS), average daily morphine milligram equivalent (MME) use, and average total MME use. Financial metrics evaluated the total charges

APA, Harvard, Vancouver, ISO, and other styles

45

Augusto, Anselmo S., Girum Urgessa, Caio B. Amorim, et al. "Experimental Characterization of Cast Explosive Charges Used in Studies of Blast Effects on Structures." CivilEng 6, no. 2 (2025): 20. https://doi.org/10.3390/civileng6020020.

Full text

Abstract:

Structural research teams face significant challenges when conducting studies with explosives, including the costs and inherent risks associated with field detonation tests. This study presents a replicable method for loading spherical and bare TNT-based cast explosive charges, offering reduced costs and minimal risks. Over eighty TNT and Composition B charges (comprising 60% RDX, 39% TNT, and 1% wax) were prepared using spherical molds made of thin aluminum, which are low-cost, off-the-shelf solutions. The charges were bare, meaning they lacked any casing, as the molds were designed to be eas

APA, Harvard, Vancouver, ISO, and other styles

46

Rasul, Bilal, and Hira Naz. "Mass spectra and incident energy resolved spectra after collisions of hydrocarbon ions with fusion-plasma tungsten thin films." Mehran University Research Journal of Engineering and Technology 39, no. 3 (2020): 517–23. http://dx.doi.org/10.22581/muet1982.2003.06.

Full text

Abstract:

We have performed surface-induced dissociation studies of small deuterated hydrocarbon cations i.e. CDx+ with x=2-4, colliding with two types of tungsten-coated surfaces, in the incident energy range between Ein = 0 eV approximately, up to Ein = 100 eV. A 34 nm thick W layer deposited on stainless steel using the Thermionic Vacuum Arc (TVA) method and a small sample of a tile cut from ASDEX-Upgrade tiles, consisting of PlasmaSprayed (PS) tungsten on carbon, are exposed to ion flux in these experiments. A double-focussing reverse geometry BE mass spectrometer, is used under ultra high vacuum co

APA, Harvard, Vancouver, ISO, and other styles

47

Sun, Ping, Xiu Min Yu, and Wei Dong. "Study on Power Delivering in Energy Management for Hybrid Electric Vehicle." Advanced Materials Research 676 (March 2013): 235–41. http://dx.doi.org/10.4028/www.scientific.net/amr.676.235.

Full text

Abstract:

The equivalent consumption minimization strategy (ECMS) is a method to reduce the global minimization problem to an instantaneous minimization problem to be solved at each instant. The adaptive ECMS is a development of ECMS in which the equivalence factors are not pre-coded, but rather calculated online. The equivalence factors, their optimal value, which minimizes the cost function while maintaining the vehicle substantially charge sustaining, depends on the specific driving cycle. The method proposed in this paper is one of the most important simplifications for actual real time implementati

APA, Harvard, Vancouver, ISO, and other styles

48

Khazins, Valery M., Valery V. Shuvalov, and Sergey P. Soloviev. "Numerical Modeling of Formation and Rise of Gas and Dust Cloud from Large Scale Commercial Blasting." Atmosphere 11, no. 10 (2020): 1112. http://dx.doi.org/10.3390/atmos11101112.

Full text

Abstract:

The emission of dust particles into the atmosphere during rock mass breaking by blasting in ore mining open-pits is one of the factors that determine the ground-level air pollution in the vicinity of pits. The data on dust concentration in the cloud, which is extremely difficult to obtain experimentally for large-scale explosions, is required to calculate the dust dispersion in the wind stream. We have elaborated a Eulerian model to simulate the initial stage of dust cloud formation and rising, and a Navier–Stokes model to simulate thermal rising and mixing with the ambient air. The first mode

APA, Harvard, Vancouver, ISO, and other styles

49

Kuć, Michał. "Fast method of determining the ambient dose equivalent at a depth of 10 mm of gamma-neutron fields based on recombination methods." Radiation Protection Dosimetry 199, no. 15-16 (2023): 1872–76. http://dx.doi.org/10.1093/rpd/ncad016.

Full text

Abstract:

Abstract The subject of the work is the presentation of a new measurement algorithm to be used in dosimetry, based on recombination chambers and methods. The algorithm enables fast measurements of the ambient dose equivalent rate H*(10) with a time resolution of several seconds. In addition to significantly reducing the measurement time, the method allows for the automation of the measurement with continuous evaluation of the results quality. Operating principles are based on frequent charge measurements with precise determination of the measurement moment. With well-known charge and measureme

APA, Harvard, Vancouver, ISO, and other styles

50

Feng, Xiaowei, Zezhou Yang, and Yuan Nie. "Investigation of the Overall Damage Assessment Method Used for Unmanned Aerial Vehicles Subjected to Blast Waves." Aerospace 11, no. 8 (2024): 651. http://dx.doi.org/10.3390/aerospace11080651.

Full text

Abstract:

With the aim of investigating the assessment methodology for the overall damage effects on an unmanned aerial vehicle (UAV) subjected to a blast wave, the failure criteria for the typical UAV was formulated through an analysis of the structural strength design standards. Specifically, the shear force associated with wing failure can serve as a critical parameter for assessing the overall damage inflicted on the UAV by blast waves. According to the design load criterion of the aircraft, the shear force value corresponding to the overall failure of the typical UAV was calculated. Numerical simul

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!