Results 71 to 80 of about 340,675 (258)

Experimental Identification of the Kink Instability as a Poloidal Flux Amplification Mechanism for Coaxial Gun Spheromak Formation [PDF]

, 2003
The magnetohydrodynamic kink instability is observed and identified experimentally as a poloidal flux amplification mechanism for coaxial gun spheromak formation.
B. Vrs̆nak, J. P. Freidberg, L. Lindberg, M. Tokman, P. M. Bellan, P. M. Bellan, S. C. Hsu, T. G. Cowling   +7 more
core   +3 more sources

Detection of Transient Decomposition Products of CF3SO2F and C4F7N via OES Under Spark and Glow Discharges

High Voltage, Volume 10, Issue 6, Page 1582-1592, December 2025.
ABSTRACT The optical emission spectra (OES) reflect the presence of excited states in the gaseous discharge, which are directly linked to the decomposition characteristics of insulating gases. In this study, a pin/rod–plate discharge reactor driven by either a high‐voltage direct current (DC) generator or a pulsed generator was developed to establish ...
Chenxi Man, Jincong Wang, Keli Gao, Yiheng Li, Yumin Zhang, Xuekai Pei   +5 more
wiley   +1 more source

Non-thermal electrical discharges for generation of active species. [PDF]

, 2018
Tato práce je věnována tvorbě aktivních částic, jako je ozon (O3) a různé typy oxidů dusíku (NOx) netermálními elektrickými výboji. Je popsána teorie dielektrického bariérového výboje, kladné i záporné korony společně s charakteristickými elektrodovými ...
Chukhlantsev Kirill
core  

Towards the text compression based feature extraction in high impedance fault detection [PDF]

, 2019
High impedance faults of medium voltage overhead lines with covered conductors can be identified by the presence of partial discharges. Despite it is a subject of research for more than 60 years, online partial discharges detection is always a challenge,
Fulneček, Jan, Hrbáč, Roman, Mišák, Stanislav, Prílepok, Michal, Vantuch, Tomáš   +4 more
core   +1 more source

Investigation on Regularities of Self‐Healing Breakdown in Metallized Film Capacitors for AC Application

Advanced Materials Interfaces, Volume 12, Issue 18, September 22, 2025.
Self‐healing capacitors, with advantages of high operating voltage, great energy density, and environmental friendliness, are widely used in power system. The electrodes of the capacitors consist of a nanometer‐thick metal layer on polypropylene films, granting them a unique self‐healing capability.
Fei Yan, Jiao Zhou, Xiang Huang, Huiwen He, Qiaogen Zhang   +4 more
wiley   +1 more source

Analysis of Various Pickup Coil Designs in Nonmodule-Type GaN Power Semiconductors

Sensors, 2020
Gallium nitride (GaN) devices are advantageous over conventional Silicon (Si) devices in terms of their small size, low on-resistance, and high dv/dt characteristics; these ensure a high integrated density circuit configuration, high efficiency, and fast
Ui-Jin Kim, Rae-Young Kim
doaj   +1 more source

Analysis of Temperature and Stress Distribution on the Bond Properties of Hybrid Tailored Formed Components

Advanced Engineering Materials, Volume 27, Issue 16, August 2025.
Hybrid materials enable high‐performance components but are challenging to process. This study explores an inductive heating concept with spray cooling for steel–aluminum specimens in a two‐step process including friction welding and cup backward extrusion.
Armin Piwek, Eduard Ortlieb, Caner‐Veli Ince, Julius Peddinghaus, Hendrik Wester, Johanna Uhe, Annika Raatz, Kai Brunotte   +7 more
wiley   +1 more source

Computational Fluid Dynamics Simulation of Industrial Electric Arc Furnace Operation: Validation and Performance of Melting Phenomena

steel research international, Volume 96, Issue 7, July 2025.
A tap‐to‐tap operation conducted in a 150 t AC electric arc furnace (EAF) by NLMK Indiana is simulated by using a specialized computational fluid dynamics (CFD) solver. The solver integrates a coherent jet model, AC arc heating model, and a scrap melting model to simulate the actual operation of an industrial EAF.
Shiyu Wang, Orlando Ugarte, Steve Ryan, Tyamo Okosun, Chenn Q. Zhou   +4 more
wiley   +1 more source

Repeated exercise stress impairs volitional but not magnetically evoked electromechanical delay of the knee flexors [PDF]

, 2012
The effects of serial episodes of fatigue and recovery on volitional and magnetically evoked neuromuscular performance of the knee flexors were assessed in twenty female soccer players during: (i) an intervention comprising 4x35s maximal static exercise;
Bailey, A, Eston, R, Gleeson, Nigel, Minshull, Claire, Rees, D   +4 more
core   +1 more source

Underlying Physical Mechanisms in Upward Positive Flashes

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 12, 28 June 2025.
Abstract This study presents the first observation of a mixed mode (MM) of charge transfer during an upward positive flash, which was initiated from the Säntis Tower in Switzerland. High‐speed camera footage, along with current and electric field measurements, revealed a downward‐propagating recoil leader connecting to the grounded current‐carrying ...
T. Oregel‐Chaumont, A. Šunjerga, J. Kasparian, M. Rubinstein, F. Rachidi   +4 more
wiley   +1 more source