Results 31 to 40 of about 294,577 (164)
A New Method for Predicting Coal and Gas Outbursts
Shock and Vibration, 2020 In view of the fact that coal and gas outbursts are difficult to predict, a new method for predicting coal and gas outbursts was proposed based on occurrence mechanisms of coal and gas outbursts relating to coal mass strength, gas pressure, and in situ ...
Guowei Dong +2 more
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Oil Price Indexing Of Natural Gas Prices [PDF]
Review of Economics, 2007 Zusammenfassung Die Ölpreisbindung des Erdgaspreises ist ein hervorstechendes Merkmal des Gasmarktes in Deutschland und anderen europäischen Ländern. Diese Besonderheit ist eng verknüpft mit der Existenz lokaler Monopole (trotz Liberalisierung bestehen diese bislang zumindest in Deutschland de facto weiterhin) und sogenannter „take-or ...
Bartholomae, Florian W., Morasch, Karl
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Thermodynamic effects of gas adiabatic index on cavitation bubble collapse
Heliyon, 2023 In this paper, an improved multicomponent lattice Boltzmann model is employed to investigate the impact of the gas properties, specifically the gas adiabatic index, on the thermodynamic effects of cavitation bubble collapse. The study focuses on analyzing the temperature evolution in the flow field and the resulting thermal effects on the surrounding ...
Yu Yang +5 more
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Energy Strategy Reviews, 2019 Remarkable proven reserves of approximately 1200 trillion cubic feet of natural gas, with an unprecedented growth in global demand, have led Iranian policymakers to look for optimal natural gas export programs.
Ali Nowrouzi +3 more
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Coal and gas outburst risk evaluation based on cloud model and D -S theory
Gong-kuang zidonghua, 2020 In view of problems of existing coal and gas outburst risk evaluation models or methods that it is difficult to take into account the uncertainty and ambiguity of evaluation indicators, and the index weights are unreasonable, coal and gas outburst risk ...
YU Liya +3 more
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Use of Retention Index in Qualitative Gas–Liquid Chromatography [PDF]
Nature, 1964 IN a recent communication, Dhont1concluded that retention index2 data for non-polar solutes on apolar stationary phases were comparable between different workers and independent of experimental conditions.
M B, EVANS, G M, HIGGINS
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Lifted flame property and interchangeability of natural gas on partially premixed gas burners
Case Studies in Thermal Engineering, 2018 The relationship between lifted flames and burner head temperature of partially premixed gas burners supplied by various natural gas sources was investigated, and the application of AGA(American Gas Association) lifting limit for Chinese domestic gas ...
Zhiguang Chen, Chaokui Qin, Pengfei Duan
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Index of refraction of gases for matter waves: Effect of the motion of the gas particles on the calculation of the index [PDF]
Physical Review A, 2008 Two different formulae relating the index of refraction $n$ of gases for atom waves to the scattering amplitude have been published. We show here that these two formulae are not consistent with the definition of the total scattering cross-section while the formula developed by one of us (C.C.) in her thesis is in agreement with this standard knowledge.
Champenois, Caroline +5 more
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The effect of mine water pH on residual coal oxidation and its microscopic action characteristics
Meikuang AnquanIn order to study the effect of pH value of mine water on the spontaneous combustion characteristics of residual coal in goaf, long-flame coal from Pingdingshan Coal Mine was used to analyze the gas production law and heat flow curves of gas derived from
Rongkun PAN +3 more
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Study of the multi-index coupling forecasting model of coal and gas outburst and its application
工程科学学报, 2018 Coal and gas outburst seriously threatens the safety of underground coal mining. With the increase in coal mining depth, the geological conditions of coal mines become complicated, which adversely affects the safety of coal mining production.
ZHANG You-yi +2 more
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