Results 11 to 20 of about 370,770 (62)

Evaluation of gas metal arc welding with alterating shielding gases for use on AA6082T6 [PDF]

open access: yes, 2012
Studies have been carried out to determine the effects of implementing alternating shielding gases for 6082T6 aluminium alloy welding. Alternating shielding gases is a newly developed method of supplying shielding gases to the weld area to enhance the ...
Gillies, Andrew   +3 more
core   +4 more sources

Arc pressure and weld metal fluid flow whilst using alternating shielding gases Part 1 : arc pressure measurement [PDF]

open access: yes, 2013
As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on gas shielded welding processes, a comparison between the arc pressures generated using argon, helium, alternating shielding gases and pulsed GTAW has ...
Campbell, Stuart   +2 more
core   +4 more sources

Molecular free path distribution in rarefied gases [PDF]

open access: yes, 2011
We present the results of investigations into the distribution of molecular free paths in rarefied gases using molecular dynamics simulations. Our tests on a range of different gas densities and confinements (unbounded, single bounding wall and parallel ...
Dongari, Nishanth   +2 more
core   +2 more sources

An investigation of the accuracy of numerical solutions of Boltzmann's equations for electron swarms in gases with large inelastic cross sections [PDF]

open access: yes, 1979
Copyright @ 1979 CSIROA Monte Carlo simulation technique has been used to test the accuracy of electron energy distribution functions and transport coefficients calculated using conventional numerical solutions of Boltzmann's equation based on a two-term
Reid, ID
core   +1 more source

Fluorine-Induced Electric Field Gradient in 3D Porous Aromatic Frameworks for Highly Efficient Capture of Xe and F-Gases

open access: yes, 2022
The development of robust and efficient porous adsorbents is essential for capturing xenon (Xe) and perfluorinated electron specialty gases (F-gases) in semiconductor exhaust gases, as toxic and corrosive gases coexist in high-temperature plasma ...
Heping Ma (417315)   +8 more
core   +1 more source

Segurança química em laboratórios de pesquisa. [PDF]

open access: yes, 2014
Definições; Causas de acidentes; Análise dos riscos; Procedimentos para prevenir ou eliminar riscos de acidentes; Riscos de acidentes: material inflamável, material explosivo, substâncias tóxicas, vidros em geral, cilindros pressurizados, gases e vapores
VIDAL, M. S., CARVALHO, J. M. F. C.
core   +1 more source

Determination of the Concentration of Gases by Measurement of Pressure [PDF]

open access: yes, 1987
For the determination of the concentration of gases by means of pressure measurement, a precise equation of state is given by which analysis can be carried out within an accuracy of 10 ppm. The parameters of the equation of state are explicitely reported
H. Langhals, Langhals, Heinz
core   +1 more source

Noble gases in the Cameroon line and the He, Ne, and Ar isotopic compositions of high mu (HIMU) mantle [PDF]

open access: yes, 1999
Ultramafic xenoliths, basaltic lavas, and CO2 gases from the Cameroon line volcanic chain provide the first characterization of combined He, Ne, and Ar isotopes in a high-time-integrated 238U/204Pb = μ (HIMU) magmatic system. Helium isotopic compositions
Alex N. Halliday   +15 more
core   +1 more source

Derivation of forces acting on the liquid weld metal based on arc pressure measurements produced using alternating shielding gases in the GTAW process [PDF]

open access: yes, 2013
As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on the gas tungsten arc and gas metal arc welding processes, a comparison between arc pressures produced using argon, helium, alternating gases and GTAW-P ...
Campbell, Stuart   +2 more
core   +3 more sources

Hydrodynamic Transport Coefficients of Granular Gases [PDF]

open access: yes, 2001
Some transport properties of granular gases are investigated. Starting from a kinetic theory level of description, the hydrodynamic transport equations to Navier-Stokes order are presented.
Brey Abalo, José Javier   +1 more
core   +2 more sources

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