Results 11 to 20 of about 49,516 (251)

Nonlinear model of short-scale electrodynamics in the auroral ionosphere [PDF]

open access: yesAnnales Geophysicae, 2000
The optical detection of auroral subarcs a few tens of m wide as well as the direct observation of shears several m/s per m over km to sub km scales by rocket instrumentation both indicate that violent and highly localized electrodynamics can occur at
J.-M. A. Noël   +2 more
doaj   +1 more source

A Novel Arc Detection Method for DC Railway Systems

open access: yesEnergies, 2021
Electric arcing due to contact interruption between the pantograph and the overhead contact line in electrified railway networks is an important and unwanted phenomenon.
Yljon Seferi   +3 more
doaj   +1 more source

Signatures of moving polar cap arcs in the F-region PolarDARN echoes [PDF]

open access: yesAnnales Geophysicae, 2012
Joint observations of the all-sky camera at Resolute Bay (Nunavut, Canada) and the Polar Dual Auroral Radar Network (PolarDARN) HF radars at Rankin Inlet and Inuvik (Canada) are considered to establish radar signatures of poleward moving polar cap ...
A. V. Koustov   +5 more
doaj   +1 more source

A Novel Algorithm for Fast DC Electric Arc Detection

open access: yesEnergies, 2021
Electric arcing is a common problem in DC power systems. To overcome this problem, the electric arc detection algorithm has been developed as a faster alternative to existing algorithms.
Michał Dołęgowski, Mirosław Szmajda
doaj   +1 more source

Identifying DC Series and Parallel Arcs Based on Deep Learning Algorithms

open access: yesIEEE Access, 2022
Arc phenomena are usually related to the undesired disengagement of two electrical connections. The emission power discharge from the failure arc may damage wiring and can present a fire hazard.
Hoang-Long Dang   +2 more
doaj   +1 more source

Arcing in ambient air triggered by pulsed x-ray radiation

open access: yesAIP Advances, 2023
The generation of arcs in air at atmospheric pressure induced by static voltage and triggered by x-ray pulses is analyzed. A static voltage is set between a cathode and an anode, and the arcing process is triggered by irradiating the air gap of a pin-to ...
Quentin d’Abzac   +3 more
doaj   +1 more source

The occurrence frequency of auroral potential structures and electric fields as a function of altitude using Polar/EFI data [PDF]

open access: yesAnnales Geophysicae, 2004
The aim of the paper is to study how auroral potential structures close at high altitude. We analyse all electric field data collected by Polar on auroral field lines in 1996–2001 by integrating the electric field along the spacecraft orbit to obtain
P. Janhunen, A. Olsson, H. Laakso
doaj   +1 more source

Sheath parameters for non-Debye plasmas: simulations and arc damage [PDF]

open access: yes, 2012
This paper describes the surface environment of the dense plasma arcs that damage rf accelerators, tokamaks and other high gradient structures. We simulate the dense, non-ideal plasma sheath near a metallic surface using Molecular Dynamics (MD) to ...
A. Anders   +13 more
core   +3 more sources

A comparative study of modelling AC electric arc by one-dimensional interpolation for power system harmonics analysis

open access: yesMATEC Web of Conferences, 2016
Electric arc is a discharge phenomenon caused by particular electrical events and arc produced facilities in power system, for example the occurrence of short-circuit fault in feeders and the use of electric arc furnace for steel-making.
Liu Yu-Jen   +3 more
doaj   +1 more source

Impact of Electric Arcs and Pulsed Electric Fields on the Functional Properties of Beta-Lactoglobulin

open access: yesFoods, 2022
Beta-lactoglobulin (β-lg) is a major whey protein with various techno-functional properties that can be improved by several treatments. Therefore, the objective of this study was to explore the impact of green high-voltage electrical treatments (HVETs ...
Rock-Seth Agoua   +4 more
doaj   +1 more source

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