Results 251 to 260 of about 90,453 (297)

Hollow-core fiber gas lasers [Invited]. [PDF]

Light Sci Appl
Wang Z, Pei W, Zhou Z, Li X, Li H, Rao B, Yang L, Zhao R, Gao C, Xi X, Shi J, Lv G, Lei L, Chen Q, Li T, Li Z, Wang M, Chen Z.   +17 more
europepmc   +1 more source

Flexible microscale tactile display with liquid-to-gas phase-change actuator array. [PDF]

Microsyst Nanoeng
Sim S, Bae K, Hwang K, Koh S, Kim J.
europepmc   +1 more source

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Expansion energy of coal gas for the initiation of coal and gas outbursts

Fuel, 2019
Abstract The study of coal and gas outburst mechanisms is necessary for the safety and efficiency in mining. Gas expansion energy is a major factor in outburst initiation. However, the amount of coal gas participating in outburst initiation is hard to estimate. In this study, considering the effect of coal damage and the environmental pressure change
Xiangjun Chen, Liyang Li
exaly   +2 more sources

The expansion of natural gas infrastructure puts energy transitions at risk

Nature Energy, 2022
Whether additional natural gas infrastructure is needed or would be detrimental to achieving climate protection goals is currently highly controversial. Here we combine five perspectives to argue why expansion of the natural gas infrastructure hinders a renewable energy future and is no bridge technology.
Claudia Kemfert, Fabian Prager, Franziska M Hoffart   +2 more
exaly   +3 more sources

Study on the influence factors of the initial expansion energy of released gas

Chemical Engineering Research and Design, 2018
Abstract Coal and gas outburst is a serious coal and rock dynamic disaster, and effective prediction is essential to control. The initial expansion energy of released gas (IEERG) is a new method to predict coal and gas outburst, which depends primarily on the gas pressure and degree of coal fragmentation.
Yunpei Liang, Fakai Wang, Xuelong Li
exaly   +2 more sources

Analysis of pulverized tectonic coal gas expansion energy in underground mines and its influence on the environment

Environmental Science and Pollution Research, 2019
Production of a large amount of gas during outbursts will cause greenhouse effects, which will impact the atmospheric environment. In this study, some inherent properties of pulverized tectonic coal were investigated. The results indicate that tectonic coal was more broken and exhibited a higher gas adsorption volume.
Yuanping Cheng, Liang Wang, Chenghao Wang   +2 more
exaly   +3 more sources

Study on the law of initial gas expansion energy and its feasibility in coal and gas outburst prediction

Environmental Science and Pollution Research, 2023
In order to explore the relationship between IEERG and outburst intensity and verify the feasibility of the former in predicting coal and gas outburst, a series tests with different gases and different gas pressures were conducted on the basis of self-developed coal and gas outburst simulation system and IEERG measuring instrument.
Zhongzhong Liu, Hanpeng Wang, Bing Zhang, Shitan Gu   +3 more
openaire   +2 more sources

On the self-energy expansion for a dilute fermi gas

Il Nuovo Cimento A, 1980
We analyse the expansion of the proper self-energy for an infinite system of interacting fermions in terms of the Fermi momentumkF, when also the incident momentum is of the same order askF. Rules are given for determining the order inkF of a proper self-energy diagram.
R. Cenni, G. Dillon
openaire   +1 more source

Transient Energy Transfer in a Radiating Gas during Shock Expansion

The Physics of Fluids, 1969
The transient energy transfer during expansion of a plane layer of radiating gas bounded by a strong shock is investigated. The inviscid, nonconducting gas is assumed to be perfect and in local thermodynamic equilibrium. A shock fitting procedure is used which completely specifies the motion and position of the shock by an iterative solution of the ...
Latko, R. J., Viskanta, R.
openaire   +1 more source