Results 31 to 40 of about 2,853,080 (287)

Controlling effect of tectonic stress field on coal and gas outburst

Meitan xuebao, 2023
To investigate the controlling effect of tectonic stress field on coal and gas outburst, the gas geology, tectonophysics and rock mechanics methods were applied to analyze the influences of tectonic stress field on tectonic coal, in-situ stress and coal ...
Deyong GUO, Xiaosheng CHUAI, Jianguo ZHANG, Guochuan ZHANG   +3 more
doaj   +1 more source

Application of Coal Seam Outburst Prevention and Early Warning Technology in Deep Dynamic Disasters of Pingmei No.13 Coal Mine

Meikuang Anquan, 2020
The outburst risk factors of Ji15-17 coal seam in Pingmei No. 13 coal mine were studied, eight warning indicators were established from the aspects of the distance between the working face and the footwall of fault, the distance between the working face
GAO Jiancheng, NING Xiaoliang, QIN Muguang
doaj   +1 more source

Development and application of simulation experimental system for impact dynamic effect and disaster-causing characteristics of coal and gas outburst

Meitan xuebao, 2023
As the disaster-causing characteristics of coal and gas outburst and the mechanism of induced mine airflow disaster are not clear, the facilities such as air door and self-rescue system are often arranged on site according to miner’s experience, thus it ...
Xuelin YANG, Guangcai WEN, Haitao SUN, Jie CAO, Bo WANG, Linchao DAI, Jun LU   +6 more
doaj   +1 more source

65. On the mechanism of solar outbursts [PDF]

Symposium - International Astronomical Union, 1957
Today it is taken for granted that the solar outbursts are produced by plasma oscillations of coronal matter, excited by a corpuscular radiation originating in the inner corona (Pawsey and Smerd, 1953) [1]. A certain component of this corpuscular radiation is obviously identical with that generating geomagnetic storms.
openaire   +1 more source

A Testing Apparatus for Gas-Driven Coal and Gas Outbursts and its Application

Frontiers in Earth Science, 2022
In this study, a multi-physics coal and gas outburst experimental apparatus is developed to allow investigating the gas-driven mechanism behind the disaster caused by coal and gas outbursts in tectonic regions. The apparatus can simulate the coal and gas
Yunlong Zou, Yunlong Zou, Bo Peng, Rong Liu, Jinyang Fan   +4 more
doaj   +1 more source

Prediction of coal and gas outburst based on catastrophe progression method

Gong-kuang zidonghua, 2015
In view of problem that inner mechanism of coal and gas outburst was very complex and it was difficult to establish an appropriate multivariate nonlinear prediction model, prediction method of coal and gas outburst based on catastrophe progression method
SHEN Zhiwei, WANG Enyuan, NIU Yue
doaj   +1 more source

Still alive and kicking: A significant outburst in changing-look AGN Mrk 1018 [PDF]

, 2023
Context. Changing-look active galactic nuclei (AGN) have been observed to change their optical spectral type. Mrk 1018 is particularly unique: first classified as a type 1.9 Seyfert galaxy, it transitioned to being a type 1 Seyfert galaxy a few years ...
McElroy, R., Combes, F., T. Urrutia, S. M. Croom, Croom, S.M, Neumann, J., F. Combes, T. Granzer, M. Singha, J. Neumann, Coil, A, R. McElroy, N. Winkel, Husemann, B, Homan, D., Krumpe, M, Pérez Torres, M., Vaughan, S. P., Homan, D, Gaspari, M, A. Coil, Gaspari, M., Krumpe, M., R. Brogan, Croom, S. M., Granzer, T., Brogan, R, B. Husemann, Coil, A., Winkel, N., Brogan, R., Neumann, J, Singha, M, Pérez-Torres, M., Urrutia, T, M. Krumpe, Granzer, T, Husemann, B., M. Pérez Torres, Winkel, N, D. Homan, Urrutia, T., Croom, S.M., Torres, M. Pérez, M. Gaspari, Combes, F, S. P. Vaughan, Singha, M., Mcelroy, R, Vaughan, S.P   +49 more
core   +1 more source

Glaciological results of the 2005 expedition to Inylchek Glacier, Central Tian Shan [PDF]

, 2008
Like many other glaciers in Central Asia, Southern Inylchek glacier in the Kyrgyz Tian Shan is covered by supraglacial moraine, which drastically influences melt rates and complicates the estimation of ablation. The quantification of sub-debris melt from
Lambrecht, Astrid, Helm, Achim, Michailjlow, W., Mayer, Christoph, Hagg, Wilfried   +4 more
core   +1 more source

Recent advances on mechanism and prevention technology of coal and gas outburst disasters in China

Meitan kexue jishu
Coal and gas outburst is a kind of mine dynamic disaster that occurs in underground coal mines, often causing mass casualties and seriously restricting the safe and efficient production of coal mines.
Chaojun FAN, Xiaofeng JIANG, Ting LIU, Mingkun LUO, Jun HAN, Tianwei LAN, Lei YANG, Ce JIA   +7 more
doaj   +1 more source

The black hole candidate XTE J1752−223 towards and in quiescence : optical and simultaneous X-ray-radio observations [PDF]

, 2012
We present optical, X-ray and radio observations of the black hole transient (BHT) XTE J1752−223 towards and in quiescence. Optical photometry shows that the quiescent magnitude of XTE J1752−223 is fainter than 24.4 mag in the i′ band.
Fender, R.P., Miller-Jones, J. C. A., Fender, R. P., Ratti, E. M., Wijnands, R., Steeghs, D., Tomsick, J., Steeghs, D. T. H., Torres, M. A. P., Miller-Jones, James, Markoff, S., Tomsick, J. A., Gallo, E., Miller‐jones, J. C. A., Ratti, E., Torres, M., Jonker, P. G., Fender, R., Miller-Jones, J.C.A., Jonker, P.G., Torres, M.A.P., Kaaret, P., Özel, F., Jonker, P., Steeghs, D.T.H., Homan, J., Ratti, E.M.   +26 more
core   +3 more sources