Results 21 to 30 of about 1,732,841 (212)

Temporal analysis on pulse train of lightning discharge observed in Malacca, Malaysia

open access: yesEnergy Reports, 2023
A few significant studies discovered that a pulse train tends to initiate subsequent return stroke in the same way that a preliminary breakdown pulse activates the first return stroke.
N. Asrina Ramlee   +3 more
doaj   +1 more source

Pulse induced failures in bi-axially oriented polypropylene capacitors: Experimental investigation

open access: yesAin Shams Engineering Journal, 2023
An experimental study of the absorption of high energy pulses in bi-axially oriented polypropylene (BOPP) capacitors is reported in the paper. The pulse handling performance test is used to identify the material or mechanical problem characteristics ...
Juraj Kurimský   +2 more
doaj   +1 more source

Effects of Pulse Duration in Laser-induced Breakdown Spectroscopy

open access: yesU.Porto Journal of Engineering, 2022
Laser-induced breakdown spectroscopy (LIBS) is a technique that leverages atomic emission towards element identification and quantification. While the potential of the technology is vast, it still struggles with obstacles such as the variability of the ...
Miguel Ferreira   +4 more
doaj   +1 more source

A 3D Interferometer-Type Lightning Mapping Array for Observation of Winter Lightning in Japan

open access: yesRemote Sensing, 2023
We have developed and deployed a 3D Interferometer-type Lightning Mapping Array (InLMA) for observing winter lightning in Japan. InLMA consists of three broadband interferometers installed at three stations with a distance from 3 to 5 km.
Junchen Yang   +5 more
doaj   +1 more source

Optical studies of the pre-breakdown mechanism in dielectronic liquids. [PDF]

open access: yes, 1977
PhDThe work described in this thesis provides an optical study of pre-breakdown events in liquid dielectrics. A small scale rig employing a 50SI test cell with viewing windows, as part of a high voltage co-axial line, enabled short rise time pulses ...
McGrath, P. B.
core   +4 more sources

Failure mechanisms of polyimide and perfluoroalkoxy films under high frequency pulses [PDF]

open access: yes, 2010
Breakdown behaviors of polyimide and perfluoroalkoxy high temperature films under unipolar and bipolar repetitive pulses are investigated. A bipolar 20kV, 20 kHz and fast dV/dt pulse generator has been designed and built to study the impact of pulse ...
Yin, Weijun   +4 more
core   +2 more sources

Laser-induced breakdown of an optically trapped gold nanoparticle for single cell transfection [PDF]

open access: yes, 2013
The cell selective introduction of therapeutic agents remains a challenging problem. Here we demonstrate spatially controlled cavitation instigated by laser-induced breakdown of an optically trapped single gold nanoparticle of diameter 100 nm. The energy
Gunn-Moore, Frank J   +10 more
core   +1 more source

Electric Field Signatures in Wideband, 3 MHz and 30 MHz of Negative Ground Flashes Pertinent to Swedish Thunderstorms

open access: yesAtmosphere, 2015
In this study, the electric field signatures of negative ground flashes pertinent to the Swedish thunderstorms were recorded simultaneously during the summer of 2014 using wide (up to 100 MHz) and narrow (at 3 MHz and 30 MHz as central frequencies ...
Mohd Muzafar Ismail   +5 more
doaj   +1 more source

Characteristics of lightning-generated electric fields measured in the Bogotá Savanna, Colombia

open access: yesRevista UIS Ingenierías, 2017
In this paper, important features of electric fields produced by cloud-to-ground (CG) lightning flashes in the central region of Colombia are analyzed. This study is the first conducted in the country where more than 100 CG lightning flash signatures are
Herbert Rojas   +2 more
doaj   +1 more source

Nanoparticles Enhanced Laser-Induced Breakdown Spectroscopy for Characterisation and Discrimination of Gemstones [PDF]

open access: yesEPJ Web of Conferences
Laser-induced breakdown spectroscopy (LIBS) is an excellent technique for rapid on-site investigations that attracts interest from diverse research areas. Gemmology is no exception.
Al-Juboori Haider   +3 more
doaj   +1 more source

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