Results 51 to 60 of about 10,633 (207)
Top-coal initial caving law of continuous group caving method in extra-thick coal seams
矿业科学学报, 2023 In order to clarify the law of top coal caving with continuous group caving method in extra-thick coal seams, this study investigated the influences of the caving openings width on the morphological characteristics of caving body, the evolution law of the boundary of top coal and their spatial relationship based on the discrete element numerical ...
Wang Zuguang +3 more
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Coalbed methane producibility from the Mannville coals in Alberta, Canada: A comparison of two areas [PDF]
, 2008 International audienceThe Mannville coals in the Fenn area, Alberta Plains, have desorbed gas content averaging 8.57 cm3/g (275 scf/t), which is similar to the same coals in the Corbett Creek area, almost 400 km away.
Cheung, F.K. +3 more
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Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes
Advanced Materials, EarlyView.A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang +11 more
wiley +1 more source
The Safety Guarantee Technology of Extra-thick Coal Seam Mining in Tashan Coal Mine
Procedia Engineering, 2011 AbstractIn recent years, a series of gas and spontaneous fire prevention technologies are summarized by Tashan coal mine of Datong Coal Mine Group CO.,LTD, which are suitable for extra-thick coal seam mining of carboniferous period through collaborative investigation of industry-university-institute and engineering practice.
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Formation of thermal fields by the energy-chemical complex of coal gasification [PDF]
, 2017 Purpose. The objective is to generate thermal energy from basic segments of the energy-chemical complex formed on the basis of borehole underground coal gasification with determination of its operation modes. Methodology. The set engineering tasks were
Cáceres Cabana, E +4 more
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Water‐Stable Paper‐Based Laser‐Induced Graphene With Asymmetric Water Adhesion and Wettability
Advanced Materials Interfaces, EarlyView.Paper‐based electronics are attractive for sustainable and disposable devices, but often fail in wet environments. By introducing Parafilm into cellulose paper combined with laser conversion, two graphene surfaces with different water interactions are created.
Lingyin Meng +3 more
wiley +1 more source
Energies, 2022 The deformation control of roadways surrounded by rock in the fully mechanized amplification sections of extra-thick coal seams is problematic. To analyze the failure and failure characteristics of a support frame, as well as the deformation and failure ...
Jian Hao +7 more
doaj +1 more source
Behaviors of overlying strata in extra-thick coal seams using top-coal caving method
Journal of Rock Mechanics and Geotechnical Engineering, 2016 AbstractAccidents such as support failure and excessive deformation of roadways due to drastic changes in strata behaviors are frequently reported when mining the extra-thick coal seams Nos. 3–5 in Datong coal mine with top-coal caving method, which significantly hampers the mine's normal production.
openaire +2 more sources
Carbon Energy, EarlyView.ABSTRACT Biochar has emerged as a useful and adaptable source of carbon for supercapacitor electrodes. Its value comes from the way biomass chemistry, thermal conversion, and activation conditions shape the resulting pore network, surface groups, and degree of carbon ordering.
Soumen Mandal +6 more
wiley +1 more source
English for Study and Work: Coursebook in 4 books. Book 2 Obtaining and Processing Information for Specific Purposes [PDF]
, 2015 Подано всі види діяльності студентів з вивчення англійської мови, спрямовані на розвиток мовної поведінки, необхідної для ефективного спілкування в академічному та професійному середовищах.
Зуенок, И. И. +15 more
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