Results 61 to 70 of about 386,900 (206)
The relationship between helium-rich gas and regional shale in the Sichuan Basin, Southwest China
Frontiers in Earth ScienceDespite over 60 years of helium development in the Sichuan Basin, the mechanism of helium enrichment remains poorly understood. Helium-rich gas is primarily found as gas composition analysis in the fields.
Jianglin He +18 more
doaj +1 more source
Low-Cost Real-Time Gas Monitoring Using a Laser Plasma Induced by a Third Harmonic Q-Switched Nd-YAG Laser [PDF]
ITB Journal of Engineering Science, 2005 A gas plasma induced by a third harmonic Nd-YAG laser with relatively low pulsed energy (about 10 mJ) has favorable characteristics for gas analysis due to its low background characteristics, nevertheless a high power fundamental Nd-YAG laser (100-200 mJ)
Syahrun Nur Abdulmadjid +5 more
doaj
Experimental perfect-gas study of expansion-tube flow characteristics [PDF]
Results of an experimental investigation of expansion tube flow characteristics performed with helium test gas and acceleration gas are presented. The use of helium, eliminates complex real gas chemistry in the comparison of measured and predicted flow ...
Miller, C. G., III, Shinn, J. L.
core +1 more source
Design concepts for the ASTROMAG cryogenic system [PDF]
, 1987 Described is a proposed cryogenic system used to cool the superconducting magnet for the Space Station based ASTROMAG Particle Astrophysics Facility. This 2-meter diameter superconducting magnet will be cooled using stored helium II. The paper presents a
Castles, S., Green, M. A.
core +2 more sources
Hydrodynamics in a pressurized cocurrent gas-liquid trickle-bed reactor [PDF]
, 1991 The influence of gas density on total external liquid hold-up, pressure drop and gas-liquid interfacial area, under trickle-flow conditions, and the transition to pulse flow have been investigated with nitrogen or helium as the gas phase up to 7.5 MPa ...
Wammes, Wino J.A., Westerterp, K. Roel
core +2 more sources
Image Quality of SOLIS/VSM in Helium vs. Nitrogen [PDF]
arXiv, 2014 The National Solar Observatory (NSO) Synoptic Optical Long-term Investigations of the Sun (SOLIS) Vector SpectroMagnetograph (VSM) is sealed and was designed to be filled with helium at slightly above ambient pressure. After 11 years of operation filled with helium, an acute shortage of helium prompted a test using nitrogen as the fill gas. Four months
arxiv
Kvasný průmysl, 2013 Gas chromatography plays a significant role in the determination of flavors, which is important not only for monitoring the quality of final product but also when testing new technological procedures. Correct setting of all conditions having an influence
Tomáš HORÁK +3 more
doaj +1 more source
Feasibility of high-helium natural gas exploration in the Presinian strata, Sichuan Basin
Natural Gas Industry B, 2015 Helium in China highly depends on import at present, so the most practical way to change the situation is searching for medium-to-large natural gas fields with high helium content.
Jian Zhang +6 more
doaj +1 more source
BSGF - Earth Sciences Bulletin, 2020 The former Vaux-en-Bugey field, first French methane production from early 20th century, is revisited as a case study to address the present generation and accumulation theories for gases like hydrogen and helium.
Deronzier Jean-François +1 more
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Shiyou shiyan dizhiThe helium (He) content in the natural gas of the Neogene Yancheng Formation in the Huangqiao area of Subei Basin ranges from 1.05% to 1.40%, which is generally higher than the industrial grade, indicating a crust and mantle composite type of helium ...
Hongsheng YAO, Xingming CHEN, Tao ZHOU
doaj +1 more source