Results 41 to 50 of about 9,618,790 (361)

Reliability growth prediction of mine-used low-voltage switchgear

open access: yesGong-kuang zidonghua, 2015
A mine low-voltage switchgear was taken as object to study its reliability growth process in the commissioning phase in underground coal mine. It was clarified that number of mine-used low-voltage switchgear failure occurrence accompanied with repair ...
XIA Haoxuan   +4 more
doaj   +1 more source

Design and Performance Analysis of Permanent Magnet Claw Pole Machine with Hybrid Cores

open access: yesCES Transactions on Electrical Machines and Systems, 2023
Permanent magnet claw pole machine (PMCPM) is a special kind of transverse flux permanent magnet machine. Compared with other electrical machines, it has the advantages of high torque density and high efficiency for high speed operation. However, because
Chengcheng Liu   +3 more
doaj   +1 more source

Quantised Singularities in the Electromagnetic Field

open access: yes, 1931
The steady progress of physics requires for its theoretical formulation a mathematics that gets continually more advanced. This is only natural and to be expected.
P. Dirac
semanticscholar   +1 more source

Analysis of Capacitive Wireless Power Transfer

open access: yesIEEE Access, 2019
The analysis of capacitive wireless power transfer was conducted in a general manner. The circuit model of a capacitive wireless power transfer chain was presented.
Jan Kracek, Milan Svanda
doaj   +1 more source

Time and space dependence of the electromagnetic field in relativistic heavy-ion collisions [PDF]

open access: yes, 2013
Exact analytical solution for the space-time evolution of electromagnetic field in electrically conducting nuclear matter produced in heavy-ion collisions is discussed.
K. Tuchin
semanticscholar   +1 more source

Infrared Neural Stimulation Elicits Distinct Molecular Pathways in Astrocytes Based on Laser Pulse Parameters

open access: yesAdvanced Biology, EarlyView.
Infrared (IR) light evokes distinct calcium and water transport responses in astrocytes, depending on stimulation duration and protocol. This study uses widefield imaging and pharmacology to reveal differential engagement of astroglial signaling pathways.
Wilson R. Adams   +7 more
wiley   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Modal Resonant Frequencies and Radiation Quality Factors of Microstrip Antennas

open access: yesInternational Journal of Antennas and Propagation, 2012
The chosen rectangular and fractal microstrip patch antennas above an infinite ground plane are analyzed by the theory of characteristic modes. The resonant frequencies and radiation Q are evaluated.
Jan Eichler   +3 more
doaj   +1 more source

Robocasting of a Water‐Based Biopolymer/WO3 Nanopowder Paste as a Precursor to Tungsten Carbide Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates a novel, additive manufacturing approach to produce complex, porous tungsten carbide structures using water‐based direct ink writing/robocasting. Leveraging a modified commercial printer and heat treatment, the process yields lightweight, electrically conductive 3D architectures capable of supporting a mechanical load.
James Bentley Bevis   +3 more
wiley   +1 more source

On the Testing of Advanced Automotive Radar Sensors by Means of Target Simulators

open access: yesSensors, 2020
The rapid development and wide commercial implementation of automotive radar sensors are strengthening the already considerable interest in matching radar target simulators.
Premysl Hudec, Viktor Adler
doaj   +1 more source

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