Results 51 to 60 of about 139,365 (154)
Study on Roof Breakage-Induced Roadway Coal Burst in an Extrathick Steeply Inclined Coal Seam
Shock and Vibration, 2019 In view of the coal burst induced by roof breakage in the steeply inclined coal seam (SICS) roadway and its mechanism, a mechanical model was established to investigate the distribution of dynamic and static stresses in the coal seam before and after the
Sheng-chuan Wang +4 more
doaj +1 more source
Nonlinear Doping of Cuprate Superconductors -- The case of Bi_2Sr_{2-x}La_xCuO_{6+\delta}
, 2010 We analyze the hole doping mechanism in Bi_2Sr_{2-x}La_xCuO_{6+\delta} (BSLCO). The singular optimum around x=0.35 is found to be connected with a feedback between the doped CuO_2 layers and its dopant reactant [La^{3+}/Bi^{3+}-O_\delta] locking the ...
Balakirev +6 more
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Technology development of Kryvyi Rih iron ore open pits within zones stoping of underground mine working [PDF]
, 2015 На современном этапе отработка залежей железных руд в Кривбассе ведется в условиях как совместных открытых и подземных горных работ, так и открытой разработки месторождений в зонах, подработанных подземными выработками.
Babets, Ye. K. +2 more
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Zoological results of a tour in the far east : Polyzoa Entoprocta and Ctenostomata [PDF]
, 2009 The Polyzoa discussed or described in this paper are all from fresh or brackish water. The majority are from the Tale Sap in the north-eastern part of the Malay Peninsula} but a few come from the Tai-Hu in the Kiangsu Province of China.
Annandale, Nelson
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Applied SciencesBecause of its strong bearing capacity and large size, a thick and hard roof is the main source of strong ground pressure in a stope, and its breaking and migration mechanism and effective control are very important for realizing safe and efficient ...
Xingping Lai +4 more
doaj +1 more source
, 2019 I liked the intimate setting of the class at first. The silence before the professor walked in. The cramped room. It always smelled like citrus cleaning products. Some hair gel mixed in there, too.
Cincotta, Anna
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Meitan kexue jishuDuring the mining of the adjacent working face, the strong mine pressure caused by the hard thick roof has obvious zoning characteristics due to the mining of the previous deeply buried large mining height working face.
Zhaoyuan LEI +4 more
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Meitan xuebaoIn view of the problems of strong mine pressure such as rapid shrinkage of hydraulic support column and easy support crushing in working face under the fully mechanized caving face with large mining height in multi-layer thick and hard roof of extra ...
Zhen ZHANG +6 more
doaj +1 more source