Results 11 to 20 of about 2,205,454 (218)
Geofluids, 2021 In order to deeply explore the destructive effect of the impulsive airflow on the mine antioutburst door when coal and gas outbursts occur in underground coal mines, a large-scale coal and gas outburst dynamic effect simulation experiment device is used ...
Linchao Dai +4 more
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Zhongguo dianli, 2023 To solve the problem of relay protection caused by CT saturation, a CT saturation identification method is proposed based on flux density characteristics and secondary current reconstruction technology in the distortion area.
Feng WANG +5 more
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Experimental Accuracy and Stability of Gas Outburst Experimental System
Geofluids, 2021 Gas outburst is an important issue in deep coal mining. At present, the gas-rock coupling change mechanism and intensity prediction of gas outburst are not clear. The research of gas outburst simulation experiment is particularly important. The State Key
Yanbao Liu +4 more
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Energy Science & Engineering, 2020 Owing to the characteristics of coal reservoirs, the gas flow capacity and permeability exhibit strong anisotropy. The anisotropy in terms of the magnitude, which corresponds to the permeability in the horizontal direction being several orders of ...
Zhigang Zhang +5 more
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To control or not to control [PDF]
International Journal of Sustainable Development and Planning, 2007 During 1994 and 1999, the Bloemfontein Municipality amalgamated with five other municipalities to form the Mangaung Municipality. The Mangaung Municipality now has a population of approximately 740,000 and covers an area of 6,363 km 2 . Some areas are totally urban; while in others, people live in informal settlements. The unemployment rate is 35%, but
G.M. Steenkamp, J.J. Steÿn
openaire +1 more source
Geofluids, 2021 Coal and gas outburst is still a major safety problem in the process of coal production in China. Correctly understanding of the migration law of outburst high gas and pulverized coal is an important basis for accurately predicting the occurrence time ...
Xusheng Zhao +3 more
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Shipin gongye ke-ji, 2022 The biogenic amine Level in Jiangxi-made sufu was analyzed by high performance liquid chromatography (HPLC) and amine-producing bacteria were isolated and identified by microbiological methods combined with HPLC confirmation.
Weiya WANG +5 more
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Energy Science & Engineering, 2020 In this study, an indicator model and system for coal and gas outburst prediction are identified and established based on gas geological anomalies, mining stress, and gas emission characteristics.
Xusheng Zhao +4 more
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Shock and Vibration, 2021 In order to investigate the mechanical property deterioration and fracture characteristics of granite under different temperature drop and thermal cycle conditions, the evolution laws of mechanical properties, acoustic emission event distribution, and ...
Zhuangzhuang Yao +3 more
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Controlling und Digitalisierung in rheinland-pfälzischen KMU - Eine empirische Untersuchung [PDF]
, 2022 Der vorliegende Beitrag basiert auf einer Umfrage von 2019, die in kleinen und mittleren Unternehmen (KMU) in Rheinland-Pfalz durchgeführt wurde. Seit Jahren ist in den Medien, der Politik und der Wirtschaft verstärkt von Digitalisierung und Industrie 4 ...
Lingnau, Volker (Prof. Dr.) +5 more
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