Results 21 to 30 of about 4,543,511 (303)

Electrocoagulation for spent coolant from machinery industry

open access: yesJournal of Water Reuse and Desalination, 2018
Spent coolant is considered as one of the most polluting industrial wastes and causes environmental problems. It mostly contains high non-biodegradable organic carbon and oil contents; the biodegradability index was very low at 0.04, which is difficult ...
W. Pantorlawn   +4 more
doaj   +1 more source

Thermodynamics Investigation and Artificial Neural Network Prediction of Energy, Exergy, and Hydrogen Production from a Solar Thermochemical Plant Using a Polymer Membrane Electrolyzer

open access: yesMolecules, 2023
Hydrogen production using polymer membrane electrolyzers is an effective and valuable way of generating an environmentally friendly energy source. Hydrogen and oxygen generated by electrolyzers can power drone fuel cells.
Atef El Jery   +4 more
doaj   +1 more source

Quantum probability distribution of arrival times and probability current density [PDF]

open access: yes, 1998
This paper compares the proposal made in previous papers for a quantum probability distribution of the time of arrival at a certain point with the corresponding proposal based on the probability current density.
B. Mielnik   +37 more
core   +2 more sources

Influence of Operating and Electrochemical Parameters on PEMFC Performance: A Simulation Study

open access: yesMembranes, 2023
Proton exchange membrane fuel cell, or polymer electrolyte fuel cell, (PEMFC) has received a significant amount of attention for green energy applications due to its low carbon emission and less other toxic pollution capacity.
Imtiaz Ali Soomro   +7 more
doaj   +1 more source

Comparison of Surface Pollution Flashover Characteristics of RTV (Room Temperature Vulcanizing) Coated Insulators Under Different Coating Damage Modes

open access: yesIEEE Access, 2019
In recent years, room temperature vulcanizing (RTV) coated insulators have been increasingly applied in transmission lines. A large number of RTV coating damages on insulators are currently found.
Zhijin Zhang   +3 more
doaj   +1 more source

Semi-relativistic charge-current density operator

open access: yes, 1998
The charge-current density and two-photon operators consistent with a single-particle semi-relativistic Hamiltonian are derived within a suitable functional derivative formalism which preserves gauge invariance.
Alberico   +38 more
core   +2 more sources

Numerical Investigation of Cross Flow on the Performance of Polymer Electrolyte Fuel Cell

open access: yesJournal of Thermal Science and Technology, 2013
A three dimensional, single-phase, isothermal study of a polymer electrolyte fuel cell (PEFC) was conducted to investigate the mechanism of convective flow effect on the performance of fuel cell.
K. M. SALAH UDDIN, Nobuyuki OSHIMA
doaj   +1 more source

Dynamics of Uniform Quantum Gases, I: Density and Current Correlations [PDF]

open access: yes, 2009
A unified approach valid for any wavenumber, frequency, and temperature is presented for uniform ideal quantum gases allowing for a comprehensive study of number density and particle-current density response functions.
Bosse, J., Pathak, K. N., Singh, G. S.
core   +1 more source

Wrapping Amorphous Indium-Gallium-Zinc-Oxide Transistors with High Current Density

open access: yesElectronic Materials
Amorphous oxide semiconductor transistors with a high current density output are highly desirable for large-area electronics. In this study, wrapping amorphous indium-gallium-zinc-oxide (a-IGZO) transistors are proposed to enhance the current density ...
Jiaxin Liu   +6 more
doaj   +1 more source

Critical Current Density and Resistivity of MgB2 Films

open access: yes, 2003
The high resistivity of many bulk and film samples of MgB2 is most readily explained by the suggestion that only a fraction of the cross-sectional area of the samples is effectively carrying current.
Li, Q.   +8 more
core   +1 more source

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