Log in

Relevant bibliographies by topics / Volume current density / Journal articles

To see the other types of publications on this topic, follow the link: Volume current density.

Journal articles on the topic 'Volume current density'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 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 'Volume current density.'

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

Timchenko, S. L., and N. A. Zadorozhny. "Conducting Medium Electrical Conductivity at High Current Density." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 6 (99) (December 2021): 64–78. http://dx.doi.org/10.18698/1812-3368-2021-6-64-78.

Full text

Abstract:

The experimental research example of electrical characteristics of structurally heterogeneous thinlayer conductors (nickel, copper) at high current density (108--109 А/m2) is shown. This current density in conditions of the samples intensive cooling is sufficient for the process of irreversible, nonthermally activated deformation. The experiment results show that the conducting medium at high current density has essential nonlinearities expressed in nonlinear dependence of the samples electrical resistance from current density. With repeated current treatments of the samples the conductors' el

APA, Harvard, Vancouver, ISO, and other styles

2

Zeide, Boris. "Optimal stand density: a solution." Canadian Journal of Forest Research 34, no. 4 (2004): 846–54. http://dx.doi.org/10.1139/x03-258.

Full text

Abstract:

The search for a stand density that maximizes total volume growth has continued since the beginning of forestry without producing a definite answer. One of the reasons is that the effect of density on growth is not always separated from those of tree size and age. Such a separation is not easy when the relationship between density and growth is expressed as a graph (Langsaeter's curve). This study develops a simple model that accounts for each main growth predictor individually. It allows one to calculate the density that maximizes volume growth at any given moment (current annual increment of

APA, Harvard, Vancouver, ISO, and other styles

3

Marchand, Richard. "Surface charge and surface current densities at material boundaries." American Journal of Physics 92, no. 2 (2024): 158–60. http://dx.doi.org/10.1119/5.0164442.

Full text

Abstract:

In electromagnetism, materials with a polarization density P→ or a magnetization density M→ are known to exhibit a bound surface charge density σb=P→·n̂ or a surface current density κ→b=M→×n̂, respectively, where n̂ is the unit vector perpendicular to the material boundary surface, directed outward. These expressions can be obtained from volume integrations for the electric potential V, or the magnetic vector potential A→, in which the integrals are restricted to the material volumes delimited by their respective boundaries. In that case, applying the divergence theorem leads to surface integr

APA, Harvard, Vancouver, ISO, and other styles

4

Webb, Paul W. "How does benthic living affect body volume, tissue composition, and density of fishes?" Canadian Journal of Zoology 68, no. 6 (1990): 1250–55. http://dx.doi.org/10.1139/z90-186.

Full text

Abstract:

Tissue composition, tissue density, and body density of two benthic fish, plaice (Pleuronectes platessa) and father lasher or shorthorn sculpin (Myoxocephalus scorpius), and a benthopelagic fish, the whiting (Merlangus merlangus), were measured. Since the fish were not identical in absolute size, data on composition were normalized by dividing body and tissue volumes by the cube of the total length of the fish. For body volume, this normalized volume (volume × length−3) is analogous to the condition factor (mass × length−3), and hence is called the volume condition factor. Normalized tissue vo

APA, Harvard, Vancouver, ISO, and other styles

5

CHEN, Yuanlong, Xiang LI, Yichi ZHANG, and Jinyang LIU. "Effects of Machining Parameters on Electrochemical Multi-Field Coupling." Mechanics 28, no. 6 (2022): 473–80. http://dx.doi.org/10.5755/j02.mech.31499.

Full text

Abstract:

Electrochemical machining involves three couplings between electric field, flow field and thermal field. The precipitation of hydrogen on the surface of the cathode will affect the entire electrochemical machining process and the final machining quality of the workpiece. Finite element software is used to analyze the effects of different voltages, electrolyte inlet pressure and interelectrode gap on current density, hydrogen volume fraction, conductivity and temperature distribution in this article. The research results show that the increase of processing voltage will increase the current den

APA, Harvard, Vancouver, ISO, and other styles

6

Pegler, Samuel S., Herbert E. Huppert, and Jerome A. Neufeld. "Stratified gravity currents in porous media." Journal of Fluid Mechanics 791 (February 22, 2016): 329–57. http://dx.doi.org/10.1017/jfm.2015.733.

Full text

Abstract:

We consider theoretically and experimentally the propagation in porous media of variable-density gravity currents containing a stably stratified density field, with most previous studies of gravity currents having focused on cases of uniform density. New thin-layer equations are developed to describe stably stratified fluid flows in which the density field is materially advected with the flow. Similarity solutions describing both the fixed-volume release of a distributed density stratification and the continuous input of fluid containing a distribution of densities are obtained. The results in

APA, Harvard, Vancouver, ISO, and other styles

7

Li, Panpan, Yongbing Zhao, Xiaoyan Yi, and Hongjian Li. "Effects of a Reduced Effective Active Region Volume on Wavelength-Dependent Efficiency Droop of InGaN-Based Light-Emitting Diodes." Applied Sciences 8, no. 11 (2018): 2138. http://dx.doi.org/10.3390/app8112138.

Full text

Abstract:

In this study, wavelength-dependent efficiency droop phenomena in InGaN-based light-emitting diodes (LEDs) by a reduced effective active region volume were investigated. Different effective active region volumes can be extracted from theoretical fitting to the efficiency-versus-current curves of standard high efficiency InGaN near-ultraviolet, blue, and green LEDs. It has been found that the effective volume of the active region reduces more significantly with increasing emission wavelength, resulting in a lower onset-droop current density, as well as a more severe droop. Increasing the quantu

APA, Harvard, Vancouver, ISO, and other styles

8

Ning, Wei, Li Da Luo, Xing Yang Xu, Qing Wei Wang, and Jian Chen. "Analyses and Determination of Current Density and Energy Density in Electric Melting Glass Furnace." Advanced Materials Research 287-290 (July 2011): 2945–51. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2945.

Full text

Abstract:

Current density and energy density is one of the most important parameters for designing the electric melting glass furnace. This paper analyzed the relation between current density and energy density based upon the generated representation, mathematical simulation and empirical equation, defined the bearing scope of current density for several kinds of electrodes, discussed the tendency of the change of current density and volume melting rate on different kinds of glasses, provided the theoretical basis to design electric melting glass furnace and established proper thermotechnical regime, so

APA, Harvard, Vancouver, ISO, and other styles

9

Nor Hairin, Assayidatul Laila, Raihan Othman, Hanafi Ani Mohd, Hens Saputra, and Muhd Zu Azhan Yahya. "Evaluation of Porous Electrode Properties Using Metal-Air Electrochemical System." Advanced Materials Research 512-515 (May 2012): 1619–23. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1619.

Full text

Abstract:

This work explores the use of metal-air electrochemical system to evaluate porous electrode properties i.e. specific surface area and pore volume density. Porous zinc electrodes are prepared from an acidic, chloride electrolytic bath of varying supporting electrolyte (NH4Cl) formulation to produce electrodeposits of distinctive properties. Nitrogen physisorption at 77 K is utilized to evaluate the specific surface area and pore volume density of the electrodes. The zinc electrodeposits prepared from all electrolytic bath formulations are then assembled into zinc-air cells as the anodic electro

APA, Harvard, Vancouver, ISO, and other styles

10

González, Gabriel, and Fco Javier González Orozco. "Electron dynamics inside a vacuum tube diode through linear differential equations." Journal of Plasma Physics 80, no. 2 (2013): 247–54. http://dx.doi.org/10.1017/s0022377813001256.

Full text

Abstract:

AbstractIn this paper we analyze the motion of charged particles in a vacuum tube diode by solving linear differential equations. Our analysis is based on expressing the volume charge density as a function of the current density and coordinates only, i.e. ρ=ρ(J,z), while in the usual scheme the volume charge density is expressed as a function of the current density and electrostatic potential, i.e. ρ=ρ(J,V). We show that, in the case of slow varying charge density, the space-charge-limited current is reduced up to 50%. Our approach gives the well-known behavior of the classical current density

APA, Harvard, Vancouver, ISO, and other styles

11

Kholboev, Bakhrom, Norboy Japakov, Kamoliddin Fayziev, Nasiba Esanbaeva, and Muslim Alibekov. "Effect of Siderate Crops on Soil Volume and Porosity." American Journal of Applied Science and Technology 5, no. 5 (2025): 39–42. https://doi.org/10.37547/ajast/volume05issue05-09.

Full text

Abstract:

This article is devoted to the current issues of increasing soil fertility. All over the world, measures are being developed to effectively use green manures, increase plant biomass, and increase the demand for soil fertility. Green manures are of great importance in enriching the soil with organic matter and thereby improving the physical properties of the soil. These crops improve the physical properties of the soil, increase soil porosity, and as a result, reduce the bulk density of the soil.

APA, Harvard, Vancouver, ISO, and other styles

12

Lubis, Adina Sari, Zulkarnain A. Muis, and Triana Nasution. "Pemodelan Hubungan Parameter Karakteristik Lalu Lintas pada Jalan Tol Belmera." MEDIA KOMUNIKASI TEKNIK SIPIL 22, no. 2 (2016): 151. http://dx.doi.org/10.14710/mkts.v22i2.12878.

Full text

Abstract:

Belmera toll road in North Sumatra was the first toll road, links Belawan-Medan-Tanjung Morawa. The aim of this research is to find the relationship model between speed, density and volume on Belmera toll road based on a traffic study. The traffic study which embodies volume study and the speed of vehicles were divided into 5 vehicle classification, into 2 traffic lines (Entrance and Exit Tanjung Morawa’s toll gates), was conducted on Friday and Saturday around the peak hour on each traffic current. The study concluded that Greenberg model is the best approach for traffic current on Belmera to

APA, Harvard, Vancouver, ISO, and other styles

13

Herrick, David C., and W. David Kennedy. "Electrical efficiency—A pore geometric theory for interpreting the electrical properties of reservoir rocks." GEOPHYSICS 59, no. 6 (1994): 918–27. http://dx.doi.org/10.1190/1.1443651.

Full text

Abstract:

Knowledge of the way pore geometry affects the conductivity of rocks is important for the evaluation of sedimentary rocks for hydrocarbon potential. Virtually all formation evaluation from logs, however, uses the empirical Archie equation that has never been given a satisfactory physical basis. As an alternative, we have formulated a new model based on the efficiency with which water‐bearing rocks conduct electric currents as determined by the conducting phase geometry. Electric current densities are not uniform throughout the conducting phase in the pore system of a rock. Numerical model stud

APA, Harvard, Vancouver, ISO, and other styles

14

Mahmud, Kare, Paula Ibell, Carole Wright, Zac Scobell, John Wilkie, and Ian Bally. "Light Relation in Intensive Mango Orchards." Proceedings 36, no. 1 (2020): 122. http://dx.doi.org/10.3390/proceedings2019036122.

Full text

Abstract:

The amount of light intercepted by a tree and its distribution within the canopy is critical in optimizing tree photosynthesis efficiency, carbon partitioning and productivity. Here we compare light relations in experimental high-density mango orchard systems with current commercial orchards. A baseline study of current commercial mango orchards showed a maximum light interception of approximately 67% was reached in trees aged between 26-31 years old, with canopy volume of approximately 15,187 m3/ha. Light interception did not significantly increase beyond 67% regardless of increase in canopy

APA, Harvard, Vancouver, ISO, and other styles

15

BONOMETTI, THOMAS, MARIUS UNGARISH, and S. BALACHANDAR. "A numerical investigation of high-Reynolds-number constant-volume non-Boussinesq density currents in deep ambient." Journal of Fluid Mechanics 673 (March 15, 2011): 574–602. http://dx.doi.org/10.1017/s0022112010006506.

Full text

Abstract:

The time-dependent behaviour of non-Boussinesq high-Reynolds-number density currents, released from a lock of height h0 and length x0 into a deep ambient and spreading over horizontal flat boundaries, is considered. We use two-dimensional Navier–Stokes simulations to cover: (i) a wide range of current-to-ambient density ratios, (ii) a range of length-to-height aspect ratios of the initial release within the lock (termed the lock aspect ratio λ = x0/h0) and (iii) the different phases of spreading, from the initial acceleration phase to the self-similar regimes. The Navier–Stokes results are com

APA, Harvard, Vancouver, ISO, and other styles

16

Liu, Hong, Li Zheng, Wei Yang, et al. "Photoionization in GaAs Photoconductive Semiconductor Switches." Advanced Materials Research 941-944 (June 2014): 631–34. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.631.

Full text

Abstract:

The density distribution characteristics of non-equilibrium carrier from spontaneous emission ahead of the tip of the current filaments in high gain semi-insulating GaAs photoconductive semiconductor switches are analyzed. The results show that the ratio of volume to area of the current filament and the average carrier density in the current filaments are two key factors that affect the photoionization effects of the current filaments. The reabsorption of wavelengths λ ≤ 876 nm radiations plays a dominant role in producing the maximum carrier density. The maximum density of photo-generated car

APA, Harvard, Vancouver, ISO, and other styles

17

Ambrozkiewicz, Olaf, and Benedikt Kriegesmann. "Density-based shape optimization for fail-safe design." Journal of Computational Design and Engineering 7, no. 5 (2020): 615–29. http://dx.doi.org/10.1093/jcde/qwaa044.

Full text

Abstract:

Abstract This paper presents a two-stage procedure for density-based optimization towards a fail-safe design. Existing approaches either are computationally extremely expensive or do not explicitly consider fail-safe requirements in the optimization. The current approach trades off both aspects by employing two sequential optimizations to deliver redundant designs that offer robustness to partial failure. In the first stage, a common topology optimization or a topology optimization with local volume constraints is performed. The second stage is referred to as “density-based shape optimization”

APA, Harvard, Vancouver, ISO, and other styles

18

Armstrong, Michael. "Designing High Energy Density Batteries for Abuse Tolerance." ECS Meeting Abstracts MA2022-02, no. 5 (2022): 560. http://dx.doi.org/10.1149/ma2022-025560mtgabs.

Full text

Abstract:

Every month or so there is a news article announcing a recall of a product due to overheating and thermal runaway of the battery pack. This has occurred more frequently as the energy density of battery cells has increased. Here we present a method to greatly improve the tolerance of a cell to internal shorting and nail penetration that is uniquely enabled by Enovix LiB cells. A higher energy density results in less mass to absorb the energy released and less surface area to dissipate the heat. Frequently the failure has been identified as being initiated by an internal short between anode and

APA, Harvard, Vancouver, ISO, and other styles

19

Hussain, Essam, Mohammad Abusara, and Suleiman Sharkh. "Design Optimisation of a Current-Fed Solid-State Transformer for MV Grid-Connected Applications." Energies 14, no. 11 (2021): 3283. http://dx.doi.org/10.3390/en14113283.

Full text

Abstract:

For integrating large batteries in the medium voltage grid, current fed solid-state transformers offer galvanic isolation and a significant weight and size reduction. While the power losses increase with frequency and flux density, the core volume is contrariwise. Therefore, a design optimisation to achieve minimum losses and/or a minimum volume is essential. An optimisation strategy is proposed in this paper to find the optimum operating frequency and core flux density under certain practical constraints such as winding voltage per turn, clearance between transformer windings, saturation flux

APA, Harvard, Vancouver, ISO, and other styles

20

Hurzeler, BE, GN Ivey, and J. Imberger. "Spreading model for a turbidity current with reversing buoyancy from a constant-volume release." Marine and Freshwater Research 46, no. 1 (1995): 393. http://dx.doi.org/10.1071/mf9950393.

Full text

Abstract:

Particle-laden flows with buoyant interstitial fluid from constant-volume releases are often encountered in nature and industry. These currents are driven by the excess density of the suspended particles, and although the bulk suspension is negatively buoyant, the buoyant interstitial fluid of the suspension can be detrained through the top of the current. Detrainment of interstitial fluid at the upper interface of the current and settling of particles through the viscous sublayer at the bottom of the current are shown to reduce the current spreading rate to less than that predicted by an iner

APA, Harvard, Vancouver, ISO, and other styles

21

Rho, Kyu Heon, Youngseung Na, Taewook Ha, and Dong Kyu Kim. "Performance Analysis of Polymer Electrolyte Membrane Water Electrolyzer Using OpenFOAM®: Two-Phase Flow Regime, Electrochemical Model." Membranes 10, no. 12 (2020): 441. http://dx.doi.org/10.3390/membranes10120441.

Full text

Abstract:

In this study, an electrochemical model was incorporated into a two-phase model using OpenFOAM® (London, United Kingdom) to analyze the two-phase flow and electrochemical behaviors in a polymer electrolyte membrane water electrolyzer. The performances of serpentine and parallel designs are compared. The current density and overpotential distribution are analyzed, and the volume fractions of oxygen and hydrogen velocity are studied to verify their influence on the current density. The current density decreases sharply when oxygen accumulates in the porous transport layer. Therefore, the current

APA, Harvard, Vancouver, ISO, and other styles

22

Müller, Daniel, Charlotte Nina Stirn, and Martin Veit Maier. "Arsenic Removal from Highly Contaminated Groundwater by Iron Electrocoagulation—Investigation of Process Parameters and Iron Dosage Calculation." Water 13, no. 5 (2021): 687. http://dx.doi.org/10.3390/w13050687.

Full text

Abstract:

Electrocoagulation (EC) is gaining increased attention for water treatment as it efficiently removes various water contaminants. Therefore, EC was applied to remove arsenic from groundwater of a highly contaminated site in Hamburg, Germany. Groundwater containing 3250 and 14,600 µg/L arsenic, mainly as Arsenite (As(III)), was treated in three different EC batch reactors using a monopolar parallel electrode-configuration. This study focused on iron EC with constant current densities and variable voltage, to investigate the influence of current density, surface to volume ratio, initial arsenic c

APA, Harvard, Vancouver, ISO, and other styles

23

Bhaganagar, Kiran, and Narasimha Rao Pillalamarri. "Lock-exchange release density currents over three-dimensional regular roughness elements." Journal of Fluid Mechanics 832 (October 30, 2017): 793–824. http://dx.doi.org/10.1017/jfm.2017.678.

Full text

Abstract:

A fundamental study has been conducted to understand the front characteristics and the mixing in the flow of density currents over rough surfaces. A large-eddy simulation (LES) has been performed for lock-exchange release density currents over rough walls to shed light on the unsteady mixing processes. A volume-penalization method, which is a special case of the immersed-boundary method, has been implemented to realize the bottom-mounted rough topology. In this study, the LES has been conducted in a channel with a lower wall covered with three-dimensional cube- and pyramid-shaped roughness ele

APA, Harvard, Vancouver, ISO, and other styles

24

Gruler, H. "Directed Cell Movement with Steric Exclusion." Zeitschrift für Naturforschung C 46, no. 7-8 (1991): 697–702. http://dx.doi.org/10.1515/znc-1991-7-829.

Full text

Abstract:

Abstract The space-dependent density of cells is evaluated for the following situation: (i) The cells are forced to make a directed movement (ii) the space for the cellular migration is restricted. The steady state distribution density is obtained when the drift current density equals the diffusion current density. The analogy to the Boltzmann statistics is shown. In a further step the cellular volume is introduced. For this case the density distribution is described in analogy to the Fermi statistics. The necrotactic response of granulocytes is used to verify the model.

APA, Harvard, Vancouver, ISO, and other styles

25

Huyssen, R. J., E. H. Mathews, L. Liebenberg, and G. R. Spedding. "On the wing density and the inflation factor of aircraft." Aeronautical Journal 120, no. 1224 (2016): 291–312. http://dx.doi.org/10.1017/aer.2015.12.

Full text

Abstract:

ABSTRACTThe aviation industry is dominated by the domain of heavier-than-air, fixed-wing, subsonic flight, and central to any design in this domain is the wing itself. One of the earliest debates in aviation still centres around the usefulness of the wing volume. On the one hand it is held that the wing, as an inevitable necessity, should provide the volume also for the payload. On the other, it is argued that more efficient wings do not even have sufficient volume for the entire wing structure. This work proposes precise definitions of theWing Densityand theInflation Factor, two parameters th

APA, Harvard, Vancouver, ISO, and other styles

26

Yue, Xiujun, Jessica Grzyb, Akaash Padmanabha, and James H. Pikul. "A Minimal Volume Hermetic Packaging Design for High-Energy-Density Micro-Energy Systems." Energies 13, no. 10 (2020): 2492. http://dx.doi.org/10.3390/en13102492.

Full text

Abstract:

Hermetic packaging is critical to the function of many microscale energy storage and harvesting devices. State-of-the-art hermetic packaging strategies for energy technologies, however, are designed for macroscale devices and dramatically decrease the fraction of active materials when applied to micro-energy systems. We demonstrated a minimal volume hermetic packaging strategy for micro-energy systems that increased the volume of active energy storage materials by 2× and 5× compared to the best lab scale microbatteries and commercial pouch cells. The minimal volume design used metal current co

APA, Harvard, Vancouver, ISO, and other styles

27

Wang, Ting, Yuanjian Wang, Huaibao Ma, and Shaojun Qu. "Analysis on influencing factors and simulation of sediment release by density current: the case of Xiaolangdi Reservoir." MATEC Web of Conferences 246 (2018): 01047. http://dx.doi.org/10.1051/matecconf/201824601047.

Full text

Abstract:

Density current venting by bottom outlets is the main form of sediment release from large reservoirs during sediment retention periods. Taking Xiaolangdi Reservoir as a case study, this study analyzed influencing factors of sediment release by density currents and proposed a semi-empirical formula to simulate the density current release process. The results show that the amount of incoming water and sediment, length of backwater, and sedimentation volume upstream of backwater zones are the main factors influencing sediment discharge. However, the importance of influencing factors varies slight

APA, Harvard, Vancouver, ISO, and other styles

28

MANICA, RAFAEL, ROGERIO DORNELLES MAESTRI, and ANA LUIZA DE OLIVEIRA BORGES. "Modelagem Física de Correntes de Turbidez: Descrição do Processo e Implicações no Estudo dos Depósitos Turbidíticos." Pesquisas em Geociências 33, no. 2 (2006): 19. http://dx.doi.org/10.22456/1807-9806.19510.

Full text

Abstract:

The turbidity currents are responsible for the formation of the major hydrocarbon reservoirs around the world; however the fundamentals of such currents, both in theory and practice, are still unexplored to exhaustion nowadays. The description of initialization, transportation and deposition mechanisms of this process is surrounded by uncertainty. These uncertainties had inspired the accomplishment of a three series of experiments, in order to investigate it using two different physicals models. It were analyzed the geometrical, dynamical and depositional features of a turbidity current attemp

APA, Harvard, Vancouver, ISO, and other styles

29

Fiocchi, S., E. Chiaramello, P. Ravazzani, and M. Parazzini. "Modelling of the Current Density Distributions during Cortical Electric Stimulation for Neuropathic Pain Treatment." Computational and Mathematical Methods in Medicine 2018 (2018): 1–12. http://dx.doi.org/10.1155/2018/1056132.

Full text

Abstract:

In the last two decades, motor cortex stimulation has been recognized as a valuable alternative to pharmacological therapy for the treatment of neuropathic pain. Although this technique started to be used in clinical studies, the debate about the optimal settings that enhance its effectiveness without inducing tissue damage is still open. To this purpose, computational approaches applied to realistic human models aimed to assess the current density distribution within the cortex can be a powerful tool to provide a basic understanding of that technique and could help the design of clinical expe

APA, Harvard, Vancouver, ISO, and other styles

30

Piña, Johan Sarache, Santiago Corzo, Dario Godino, and Damian Ramajo. "Volume of Fluid simulation of air–water co-current and Counter-current flow with variable density turbulence formulation." Nuclear Engineering and Design 424 (August 2024): 113217. http://dx.doi.org/10.1016/j.nucengdes.2024.113217.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Headley, T. J., J. R. Michael, F. A. Greulich, M. J. Carr та J. M. Seuntjens. "STEM BSE imaging and Monte Carlo simulation of α-β microstructures in NbTi superconductors". Proceedings, annual meeting, Electron Microscopy Society of America 50, № 1 (1992): 86–87. http://dx.doi.org/10.1017/s0424820100120837.

Full text

Abstract:

High current density NbTi multifilamentary superconductors have α-β microstructures tailored by thermo-mechanical processing involving interspersed cold drawing and heat treatment. A final heat treatment in the two-phase α-β field controls the volume fraction of α-Ti precipitates and subsequent cold drawing refines the scale of the microstructure to a level that optimizes flux pinning properties which affect critical current density (Jc). The volume fraction, particle size, shape and spacing of α-Ti precipitates present after the final heat treatment are important parameters of interest, and s

APA, Harvard, Vancouver, ISO, and other styles

32

Boone, Donald C. "Density Functional Theory Analysis that Explains the Volume Expansion in Prelithiated Silicon Nanowires." European Journal of Applied Physics 6, no. 2 (2024): 31–35. http://dx.doi.org/10.24018/ejphysics.2024.6.2.305.

Full text

Abstract:

This research is a theoretical study that simulates the volume expansion of a prelithiated silicon nanowire during lithium-ion insertion and the application of an electric current. Utilizing density functional theory (DFT) the ground state energy Eg (x) of prelithiated silicon (LixSi) is defined as a function of the lithium-ion (Li+) concentration (x). As the Li+ are increased, Eg (x) become increasingly stable from x = 1.00 through x = 2.415 and decrease in stability as the lithium-ion concentration becomes x > 2.415 until full lithiation of the silicon nanowire is reached at x = 3.75. Aft

APA, Harvard, Vancouver, ISO, and other styles

33

Li, Yi, Xiu Chen Zhao, Ying Liu, and Hong Li. "Effect of Bump Shape on Current Density and Temperature Distributions in Solder Bump Joints under Electromigration." Advanced Materials Research 569 (September 2012): 82–87. http://dx.doi.org/10.4028/www.scientific.net/amr.569.82.

Full text

Abstract:

Three dimensional thermo-electrical finite element analysis was employed to simulate the current density and temperature distributions for solder bump joints with different bump shapes. Mean-time-to-failure (MTTF) of electromigration was discussed. It was found that as the bump volume increased from hourglass bump to barrel bump, the maximum current density increased but the maximum temperature decreased. Hourglass bump with waist radius of 240 μm has the longest MTTF.

APA, Harvard, Vancouver, ISO, and other styles

34

Abdelouahed, Lokmane, Gérard Valentin, Souhila Poncin, and François Lapicque. "Current density distribution and gas volume fraction in the gap of lantern blade electrodes." Chemical Engineering Research and Design 92, no. 3 (2014): 559–70. http://dx.doi.org/10.1016/j.cherd.2013.10.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Sedky, A., and M. I. Youssif. "Correlation between superconducting volume fraction and critical current density in copper oxide superconducting systems." Physica C: Superconductivity 403, no. 4 (2004): 297–303. http://dx.doi.org/10.1016/j.physc.2003.12.020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Yin, Li Meng, Yan Fei Geng, Zhang Liang Xu, and Song Wei. "Effects of Current Stressing and Isothermal Aging on the Tensile Strength of Microscale Lead-Free Solder Joints with Different Joint Volumes." Advanced Materials Research 634-638 (January 2013): 2800–2803. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2800.

Full text

Abstract:

Adopting an accurate micro-tensile method based on dynamic mechanical analyzer (DMA) instrument, the tensile strength of three kinds of copper-wire/solder/copper-wire sandwich structured microscale lead-free solder joints that underwent current stressing with a direct current density of 1.0×104 A/cm2 and loading time of 48 hours were investigated, and compared with those solder joints isothermal aged at 100 0C for 48 hours and as-reflowed condition. These three kinds of microscale columnar solder joints have different volumes, i.e., a same diameter of 300 μm but different heights of 100 μm, 20

APA, Harvard, Vancouver, ISO, and other styles

37

Srithanachai, Itsara, Surada Ueamanapong, Poopol Rujanapich, et al. "Defects Study by Activation Energy Profile for Lowering Leakage Current in P-N Junction." Materials Science Forum 695 (July 2011): 569–72. http://dx.doi.org/10.4028/www.scientific.net/msf.695.569.

Full text

Abstract:

Diode leakage current consists of diffusion (Id) and generation current (Ig), which is strongly sensitive to the residual defect density. These defects can be studied by activation energy (Ea). Therefore, this paper presents a method for calculating activation energy of silicon p-n junctions from volume generation current. It combines temperature-dependent current–voltage (I –V) and capacitance–voltage (C-V) measurements of diodes. The Igcan be found from the volume leakage current by subtraction of the volume diffusion current, which is calculated while the depletion width is zero. The activa

APA, Harvard, Vancouver, ISO, and other styles

38

Khlyustikov, I. N. "Surface Superconductivity of Vanadium." Journal of Experimental and Theoretical Physics 132, no. 3 (2021): 453–56. http://dx.doi.org/10.1134/s1063776121030043.

Full text

Abstract:

Abstract The critical temperature of the surface superconductivity in vanadium (Tcs) is found to be 0.04 K higher than the critical temperature of its volume superconductivity (Tcv). Surface superconductivity persistent currents can effectively trap a magnetic flux. The critical current density of the surface superconductivity is estimated at js = 5 × 106 A/cm2 at T = Tcv.

APA, Harvard, Vancouver, ISO, and other styles

39

Sohail, Muhammad, Salman Amin, Yasir Butt, and Muhammad Bin Zubaid Ramay. "Aging Performance of Low-Density Polyethylene/Silicone Rubber Blends Insulators Under Contaminated Conditions." Pakistan Journal of Engineering and Technology 5, no. 1 (2022): 29–34. http://dx.doi.org/10.51846/vol5iss1pp29-34.

Full text

Abstract:

Insulation materials are a vital part of the electrical system in all kinds of high voltage (HV) Transmission lines. Environmental stresses affect the performance of all types of insulation materials over time. Dielectric breakdown strength (DBS), Hydrophobicity, Leakage current, internal partial discharge and volume resistivity are all three degraded parameters in the service environment. The materials stand best in outdoor insulation, with the lowest partial discharge, highest breakdown strength, high hydrophobic, Lowest Leakage current, and highest volume resistivity. Enhancement of these p

APA, Harvard, Vancouver, ISO, and other styles

40

Gérard, V., B. Rouzaire-Dubois, P. Dilda, and J. M. Dubois. "Alterations of ionic membrane permeabilities in multidrug-resistant neuroblastoma x glioma hybrid cells." Journal of Experimental Biology 201, no. 1 (1998): 21–31. http://dx.doi.org/10.1242/jeb.201.1.21.

Full text

Abstract:

A population of NG108-15 neuroblastoma cells resistant to doxorubicin (NG/DOXR) was established. The cells exhibited a multidrug resistance phenotype with cross-resistance to vinblastin and colchicine, overexpression of a 170 kDa membrane protein identified as P-glycoprotein and reversal of resistance by verapamil and quinine. Compared with NG108-15 cells, NG/DOXR cells showed an increase in Na+ current density and a decrease in cyclic-AMP-activated Cl- current density with no change in K+- and volume-sensitive Cl- current densities. As previously observed in NG108-15 cells, the vacuolar-type

APA, Harvard, Vancouver, ISO, and other styles

41

Stancheva, Rumena, and Ilona Iatcheva. "Forces in a 3D magnetic field of conducting current contours." Serbian Journal of Electrical Engineering 5, no. 1 (2008): 77–86. http://dx.doi.org/10.2298/sjee0801077s.

Full text

Abstract:

The present paper deals with 3D magnetic field analysis of conducting current contours. The magnetic field and forces were calculated analytically and by FEM applying the Comsol Multiphysics package. Forces were calculated by the Maxwell stress tensor and by volume force density. Numerical results for real and ideal contours with the same linear dimensions are discussed. Comparison between analytical and numerical data shows satisfactory agreement.

APA, Harvard, Vancouver, ISO, and other styles

42

Inoue, Hana, Nobuyuki Takahashi, Yasunobu Okada, and Masato Konishi. "Volume-sensitive outwardly rectifying chloride channel in white adipocytes from normal and diabetic mice." American Journal of Physiology-Cell Physiology 298, no. 4 (2010): C900—C909. http://dx.doi.org/10.1152/ajpcell.00450.2009.

Full text

Abstract:

The volume-sensitive outwardly rectifying (VSOR) chloride channel is ubiquitously expressed and involved in cell volume regulation after osmotic swelling, called regulatory volume decrease (RVD), in various cell types. In adipocytes, the expression of the VSOR channel has not been explored to date. Here, by employing the whole-cell patch-clamp technique, we examined whether or not the VSOR channel is expressed in white adipocytes freshly isolated from epididymal fat pads of normal (C57BL/6 or KK) and diabetic (KKAy) mice. Whole cell voltage-clamp recordings revealed that Cl− currents were grad

APA, Harvard, Vancouver, ISO, and other styles

43

Higuchi, Hideyuki, Jyun-ichi Hirata, Yushi Adachi, and Tomiei Kazama. "Influence of Lumbosacral Cerebrospinal Fluid Density, Velocity, and Volume on Extent and Duration of Plain Bupivacaine Spinal Anesthesia." Anesthesiology 100, no. 1 (2004): 106–14. http://dx.doi.org/10.1097/00000542-200401000-00019.

Full text

Abstract:

Background The current study was designed to investigate the influence of lumbosacral cerebrospinal fluid (CSF) density, velocity, and volume on the extent and duration of plain bupivacaine spinal anesthesia. Methods Forty-one patients scheduled to undergo orthopedic surgery with spinal block were enrolled. Lumbosacral CSF volumes were calculated from low thoracic, lumbar, and sacral axial magnetic resonance images. CSF velocity at the L3-L4 level was derived from phase-contrast magnetic resonance images. Spinal anesthesia was performed in the lateral decubitus position. CSF (2 ml) was sampled

APA, Harvard, Vancouver, ISO, and other styles

44

Braun, Paul V. "(Invited) High Voltage, Energy, and Power Density Miniature Batteries Formed Using Stacked Electrodeposited Bifacial Electrodes." ECS Meeting Abstracts MA2022-02, no. 5 (2022): 573. http://dx.doi.org/10.1149/ma2022-025573mtgabs.

Full text

Abstract:

Accessing high voltages (>9V) and high-power density in microbatteries with volumes below ~0.25 cm3 is challenging. At such scales energy density and voltage are highly constrained by packaging and serial integration of individual cells. Here, we demonstrate hermetically sealed, durable, compact (volume ≤ 0.165 cm3) lithium batteries (Li-LiCoO2 chemistry) with exceptionally low package volume (10.2%) in single- (~4 V), double- (~8 V) and triple-stacked (~12 V) configurations with energy densities reaching 990 Wh Kg-1 and 1929 Wh L-1 (triple-stacked battery discharged at C/10) and high power

APA, Harvard, Vancouver, ISO, and other styles

45

Fan, Na, Liqiang Chai, Peng Wang, and Jun Liang. "The effect of ceramic friction pairs on the tribocorrosion behavior of AISI 304 stainless steel in seawater." Industrial Lubrication and Tribology 71, no. 6 (2019): 779–86. http://dx.doi.org/10.1108/ilt-10-2018-0377.

Full text

Abstract:

Purpose This paper aims to study the tribocorrosion behavior of 304 stainless steel (SS) sliding against SiC and Si3N4 counterparts in artificial seawater. Design/methodology/approach The tribocorrosion behavior of 304SS sliding against SiC and Si3N4 balls in artificial seawater has been investigated. The tests were conducted using a ball-on-disk rig equipped with an electrochemical workstation. The friction coefficient, surface morphology, wear volume and current density were determined. Findings When 304SS sliding against SiC ball, a smooth surface with a silica layer was formed on the top,

APA, Harvard, Vancouver, ISO, and other styles

46

MEL'NIKOV, Vadim V. "Current trends and factors of socio-economic inequality in Russian regions." Economic Analysis: Theory and Practice 24, no. 2 (2025): 49–72. https://doi.org/10.24891/ea.24.2.49.

Full text

Abstract:

Subject. The article addresses socio-economic inequality in the regions of the Russian Federation. Objectives. The focus is on the analysis of current trends and factors of socio-economic inequality in Russian regions. Methods. The study employs comparative analysis, graphical method, least squares method using panel data. Results. The level of economic and social inequality in federal districts is influenced by various factors. For instance, in the Central Federal District, this is migration growth, density of public hard-surface roads, and the volume of investments. In the Northwestern Feder

APA, Harvard, Vancouver, ISO, and other styles

47

Li, Yanru, Yulin Guo, Yifei Zhu, and Anbang Sun. "A computational study of pseudo-filamentary nanosecond pulsed dielectric barrier discharge in atmospheric air." Physics of Plasmas 30, no. 3 (2023): 033509. http://dx.doi.org/10.1063/5.0120800.

Full text

Abstract:

The formation and propagation of pseudo-filamentary dielectric barrier discharge in atmospheric air are investigated through a 2D fluid model. The discharge development can be divided into three stages: the volume streamer stage, the surface streamer stage, and the reverse discharge stage. The simulations show that the streamer head becomes wider and the electron density of the volume streamer head increases six times when the volume streamer interacts with the dielectric, and the volume streamer transforms into the surface streamer after the interaction. Compared with volume streamers, surfac

APA, Harvard, Vancouver, ISO, and other styles

48

Lomberg, K. G. "Density: Bulk in-situ or SG?" Journal of the Southern African Institute of Mining and Metallurgy 121, no. 9 (2021): 1–6. http://dx.doi.org/10.17159/2411-9717/1423/2021.

Full text

Abstract:

The density used to covert volume to tons is critical in determining the real in-situ tonnage of Mineral Resources. However, the methods used to determine density and the use of different technical terms are seen to be inconsistent throughout the industry. Probably the best discussion addressing the determination of density was presented by Lipton (2001). This paper does not try to replicate this excellent work, but rather to review current industry practice and present a comparison of the approach to density in public reporting. Some of the technical terms used in reporting and the common met

APA, Harvard, Vancouver, ISO, and other styles

49

Moon, In Yong, Se-Jong Kim, Ho Won Lee, Jaimyun Jung, Young-Seok Oh, and Seong-Hoon Kang. "Investigation of the Correlation between Initial Microstructure and Critical Current Density of Nb-46.5 wt%Ti Superconducting Material." Metals 11, no. 5 (2021): 777. http://dx.doi.org/10.3390/met11050777.

Full text

Abstract:

We have investigated the effect of initial microstructures on the change in critical current density (Jc) of Nb-46.5 wt%Ti (NbTi) superconducting material. It is well known that α-Ti phases distributed in NbTi material act as a flux pinning center, resulting in an improvement in critical current density. Therefore, it is crucial to obtain the grain-refined microstructure, which is strongly related with precipitation of uniformly distributed fine α-Ti phases and higher volume faction of α-Ti phases, as α-Ti phases are precipitated at the grain boundaries and triple points during heat treatments

APA, Harvard, Vancouver, ISO, and other styles

50

Manoj Kumar, A. P., and P. Mohanan. "Effect of Physical Parameters on DeNOx Conversion in Selective Catalytic Converter Used in Diesel Vehicles." Applied Mechanics and Materials 376 (August 2013): 13–16. http://dx.doi.org/10.4028/www.scientific.net/amm.376.13.

Full text

Abstract:

The Urea SCR system is a promising approach to reduce NOx in order to meet stringent limits on Euro 1V and Euro V standards. Apart from thermodynamic properties (temperature, pressure,heat and mass transfer), the cell geometry of SCR also got significant role in reduction of NOx. The current study focuses on the calculation of NOx conversion by varying the Open Frontal area of monolith, volume of monolith, cell density thereby to choose best cell geometry which will result in maximum DeNOx efficiency. It has been found that as the cell density increases the NOx conversion efficiency also incre

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!