Quantitative Characterization of Overburden Rock Development Pattern in the Goaf at Different Key Stratum Locations Based on DEM [PDF]
Advances in Civil Engineering, 2021 The overburden rock mining fissures are the main cause of coal spontaneous combustion, gas pooling, and mine water inrush caused by goaf air leakage. Rapid and accurate determination of the development and evolution law of mining fissures have great significance for the application of coal spontaneous combustion prevention and control, gas disaster ...
Xiaoqiang Zhang +4 more
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Influence of Valleys Terrain on Pressure of Fully Mechanized Working Faces in Shallow Coal Seams
Shock and Vibration, 2021 The absence of a key stratum during overburden rock movement is crucial to the mining pressure of fully mechanized coal mining faces. Using physical and numerical simulations, the 21304 mechanized mining in Daliuta and Huojitu coal mining faces 1−2 ...
YingJie Liu, Qingjie Qi, Anhu Wang
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Meikuang Anquan, 2020 In order to study the development characteristics and formation location of mining overburden in thick coal seam under thick sandstone, the overburden movement caused by mining of thick coal seam at 2301 working face in a Datong mine is taken as an ...
NIU Hongwei, GAO Feng, HAN Jinli, WANG Mengchao, CAO Zhenjun
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Questionnaire surveys to discover academic staff and library staff perceptions of a National Union catalogue [PDF]
, 2002 During the feasibility study into a National Union catalogue for the UK (UKNUC), a questionnaire survey was undertaken of the needs of both academic staff in higher education and library staff.
Kidd, T., Stubley, P.
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Novelties from the herbaceous stratum in a key region for the conservation of the Southern Amazon
Biota Neotropica, 2022 Abstract The contribution of the herbaceous stratum to tropical plant diversity is considerable, however this component remains undersampled. We investigated floristic, structural, ecological and conservation issues concerning the herbaceous component of a seasonal deciduous forest associated with granitic rock outcrops in the Cristalino Region, a key ...
Sandra Cristina Gallo +4 more
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Investigation of the Effectiveness of a New Backfilling Method: “Multi-Arch Pier-Column”
Energies, 2022 Owing to the shortcomings of blindness and inaccuracy when backfilling in goafs and based on the key stratum theory, we propose the “multi-arch pier-column” backfilling method.
Guangzheng Xu +7 more
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Active regulation of the epidermal calcium profile [PDF]
, 2012 A distinct calcium profile is strongly implicated in regulating the multi-layered structure of the epidermis. However, the mechanisms that govern the regulation of this calcium profile are currently unclear.
Adams, Matthew +2 more
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Stratum corneum hydration regulates key epidermal function and serves as an indicator and contributor to other conditions [PDF]
Journal of the European Academy of Dermatology and Venereology, 2019 Linked article: This is a commentary on M. Augustin et al., pp. 147–150 in this issue. To view this article visit https://doi.org/10.1111/jdv.15157.
M.‐Q. Man, P.M. Elias
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A new theoretical method for calculating front abutment stress during coal mining
Energy Science & Engineering, 2020 The calculation of abutment stress has always been the most important topic in safe underground mining and design. In this paper, based on the formation mechanism of abutment stress, combined with the mechanical properties of actual strata and the theory
Hao Liu +4 more
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Diet-dependent immunohistochemical evaluation of connexin 43 in the sheep rumen [PDF]
, 2016 The objective of this study was to characterize the immunohistochemical localization of plasma membrane connexin 43 in the rumen of sheep after changing the diet from hay (ad libitum) to a mixed hay/concentrate diet.
Ahmed, Rasha S. +2 more
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