Results 11 to 20 of about 313,034 (335)
Black-Body Radiation Correction to the Polarizability of Helium [PDF]
, 2011 The correction to the polarizability of helium due to black-body radiation is calculated near room temperature. A precise theoretical determination of the black-body radiation correction to the polarizability of helium is essential for dielectric gas ...
D. A. Varshalovich +4 more
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Helium Signatures of Natural Gas From the Dongpu Sag, Bohai Bay Basin, Eastern China
Frontiers in Earth Science, 2022 The Dongpu Sag is one of the important areas for oil and gas exploration in the Bohai Bay Basin, eastern China, and natural gas from different strata in the sag contain a certain amount of helium, with the geochemical characteristics and the implications
Chunhua Ni +15 more
doaj +1 more source
Arc pressure and weld metal fluid flow whilst using alternating shielding gases Part 2 : arc force determination [PDF]
, 2013 The transient variation of the shielding gas present in the alternating shielding gas process produces a dynamic action within the liquid weld metal. Flow vectors opposite in direction have been reported due to the various forces acting on the weld metal
Campbell, Stuart +2 more
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A case study of helium recovery from Australian natural gas
Case Studies in Chemical and Environmental Engineering, 2022 Helium occurs in commercial quantities in some natural gas fields and global production is dominated by the few countries that recover helium as a byproduct of natural gas.
Luke McElroy +3 more
doaj +1 more source
Rb*He_n exciplexes in solid 4_He [PDF]
, 2006 We report the observation of emission spectra from Rb*He_n exciplexes in solid 4He. Two different excitation channels were experimentally identified, viz., exciplex formation via laser excitation to the atomic 5P3/2 and to the 5P1/2 levels.
Hofer, A. +4 more
core +2 more sources
The influence of the reactor pressure on the hydrodynamics in a cocurrent gas-liquid trickle-bed reactor [PDF]
, 1990 The influence of the reactor pressure on the liquid hold-up in the trickle-flow regime and on the transition between trickle-flow and pulse-flow has been investigated in a trickle-flow column operating up to 6.0 MPa with water, and nitrogen or helium as ...
Wammes, W.J.A., Westerterp, K.R.
core +3 more sources
Frontiers in Earth Science, 2022 Helium is a strategic resource with many scientific, technical and industrial applications. However, despite its importance and scarcity, there is a lack of understanding on its origin, migration and accumulation processes.
Shengfei Qin +3 more
doaj +1 more source
Journal of Natural Gas Geoscience, 2017 Crust-derived helium is generated from the radioactive decay of uranium, thorium and other radioactive elements in geological bodies. Compared with conventional natural gas, helium is a typical weak source gas as a result of extremely slow generation ...
Yuhong Li +5 more
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Helium Ionization in the Diffuse Ionized Gas surrounding UCHII regions [PDF]
, 2017 We present measurements of the singly ionized helium to hydrogen ratio ($n_{He^+}/n_{H^+}$) toward diffuse gas surrounding three Ultra-Compact HII (UCHII ) regions: G10.15-0.34, G23.46-0.20 \& G29.96-0.02.
Anderson, L. D. +2 more
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Journal of Natural Gas Geoscience, 2020 Based on the study of the geological background, it is considered that the main factors affecting helium enrichment in the northern margin of the Qaidam Basin (NMQB) are widely distributed rock masses, developed fractures, groundwater system, and more ...
Wei Han +7 more
doaj +1 more source