Results 111 to 120 of about 2,255,661 (285)

Perspectives and Emerging Trends in Plasma Catalysis: Facing the Challenge of Chemical Production Electrification

open access: yesChemCatChem, Volume 17, Issue 7, April 4, 2025.
Plasma catalysis: a key technology to electrify chemical production. Emerging trends and present gaps to pass from a research area to a key technology to develop sustainable decentralized production and face societal challenges. Emerging possibilities in modeling, new trends in reactor and electrode design, combining plasma and electro‐/photocatalysis,
Annemie Bogaerts   +3 more
wiley   +1 more source

Time-Resolved Emission Spectroscopy Measurements during the Restrike Period in Arc Plasma Torch

open access: yesJournal of Spectroscopy, 2018
Simultaneous optical, spectroscopic, and electrical measurements in the region of the arc anode attachment of the water-argon plasma torch are presented.
Alan Mašláni   +3 more
doaj   +1 more source

On the dynamics of cutting arc plasmas: the role of the power supply ripple

open access: yesAdvanced Electromagnetics, 2012
The power sources used in cutting arc torches are usually poorly stabilized and have a large ripple factor. The strong oscillatory components in the voltage and arc current produce in turn, large fluctuations in the plasma quantities.
L. Prevosto
doaj   +1 more source

Thermal Abatement of Perfluorocompounds with plasma torches

open access: yesEnergy Procedia, 2017
Abstract Perfluorocompounds (PFCs) have long lifetimes and high global-warming potentials. PFCs include CF4, C2F6, C3F8, CHF3, SF6, NF3, etc., which are widely used in the electronic industries. Although the atmospheric concentrations of PFCs are currently much lower than CO2, the annually increasing rate of CF4 and SF6 are 3.3 and 12 times higher ...
Shiaw-Huei Chen, How Ming Lee
openaire   +2 more sources

The undetected murder? Evaluation and validation of a practicable and rapid inductively coupled plasma‐mass spectrometry method for the detection of arsenic, lead, and thallium intoxications in postmortem blood

open access: yesDrug Testing and Analysis, Volume 17, Issue 4, Page 470-477, April 2025.
An ICP‐MS method was developed using a modified acidic workup for the quantitative determination of arsenic, lead, and thallium in postmortem blood. The current method is practicable and compatible with an ICP‐MS system used for trace element analysis in an accredited medical laboratory.
Martin H. J. Wiesen   +5 more
wiley   +1 more source

Experimental Study on Wire Melting Control Ability of Twin-Body Plasma Arc

open access: yesChinese Journal of Mechanical Engineering
The twin-body plasma arc has the decoupling control ability of heat transfer and mass transfer, which is beneficial to shape and property control in wire arc additive manufacturing. In this paper, with the wire feeding speed as a characteristic quantity,
Ruiying Zhang, Fan Jiang, Long Xue
doaj   +1 more source

Electrical, thermal and optical characteristics of plasma torch

open access: yesIraqi Journal of Physics, 2019
Non thermal argon plasma needle at atmospheric pressure was constructed. The experimental set up was based on simple and low cost electric components that generate electrical field sufficiently high at the electrodes to ionize various gases which flow ...
Ali A-K. Hussain
doaj   +1 more source

Hydrogen peroxide generated by an atmospheric He-O2-H2O flowing post-discharge: production mechanisms and absolute quantification [PDF]

open access: yesISPC-22, Jul 2015, Antwerp, Belgium. 2015, 2016
An atmospheric plasma torch has been supplied with a gaseous mixture of helium, water vapour and/or oxygen to study the production of reactive species within its flowing post-discharge, in particular hydrogen peroxide. The mechanisms responsible for the production of H2O2 have been investigated by correlating measurements of mass spectrometry and ...
arxiv  

Research on the Production of Turquoise Hydrogen from Methane (CH4) through Plasma Reaction

open access: yesEnergies
Turquoise hydrogen is produced through a process of separating carbon into solid carbon based on fossil fuels and refers to hydrogen that does not produce carbon dioxide.
Dong-Kyoo Park   +5 more
doaj   +1 more source

Optical diagnostics and mass spectrometry on the afterglow of an atmospheric pressure Ar/O$_2$ radiofrequency plasma used for polymer surface treatment [PDF]

open access: yesarXiv, 2016
In the context of polymer surface treatment, the afterglow of an atmospheric pressure Ar/O$_2$ radiofrequency plasma is characterized by optical emission spectroscopy, laser induced fluorescence and mass spectrometry. The influence of the O$_2$ gas flow rate and the source power on the plasma properties (gas temperature, Ar excitation temperature ...
arxiv  

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