Results 131 to 140 of about 181,923 (295)
Study on surrounding rock deformation and gas control of entry automatically formed by roof cutting in high-gas coal seam [PDF]
, 2023 Hainan Gao +4 more
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矿业科学学报, 2023 In deep mining, coal-rock is in a state of three unequal forces, and the intermediate principal stress has the influence on the deformation and strength characteristics of coal-rock. This study studied the deformation and seepage characteristics of gas-bearing composite coal-rock under different intermediate principal stresses by using true triaxial ...
Wang Kai +4 more
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Polymer Engineering &Science, EarlyView.This review integrates the molecular fundamentals, key challenges, and mitigation strategies in polyolefin 3D printing, focusing on shrinkage, warpage, and adhesion control. It highlights material design approaches using recycled polyolefins and functional fillers to improve printability, mechanical properties, and sustainability in additive ...
Malik Hassan +5 more
wiley +1 more source
Meikuang Anquan, 2022 In order to investigate the permeability characteristics in the in-situ crushed coal rock body around the perimeter of gas extraction borehole, the permeability test system of crushed rock body was used to carry out the steady-state permeability test of different grades of crushed coal rock body, and the permeability parameters under different porosity
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Переклад у галузі електроенергетики. Методичні рекомендації до практичних занять з дисципліни для студентів спеціальності 7.030507 «Переклад» напряму підготовки 035 «Філологія» [PDF]
, 1994 Методичні матеріали призначено для самостійної роботи студентів спеціальності 7.030507 “Переклад” напряму підготовки 035 «Філологія» для організації практичних занять із дисципліни «Переклад у галузі електроенергетики ...
Martin, Peter +3 more
core
Polymer Engineering &Science, EarlyView.Thermal annealing of FDM‐printed PLA significantly enhances longitudinal tensile and flexural strengths by increasing crystallinity to 46.6%. However, transverse properties remain constrained by weak interlayer adhesion, providing crucial insights into the anisotropic thermo‐mechanical behavior of printed biopolymers for demanding engineering ...
Huseyin Erdem Yalkin, Ayse Nur Ozkan
wiley +1 more source
Conjecture about mechanism of butterfly-shape coal and gas outburst in excavation roadway
矿业科学学报, 2017 Referring to roadway butterfly shape rock burst mechanism and nonlinear dynamic system theory, a conjecture about butterfly-shape coal and gas outburst mechanism in excavation roadway has been made, In this conjecture, the mechanical essence of coal and ...
Ma Nianjie +5 more
doaj
SustainabilityThe exploitation and utilization of coal resources are closely related to sustainable social and economic development. To uncover the deformation and seepage patterns of coal on the mining process, this study devised a new stress program with simultaneous changes in axial and confining pressures, then performed coal seepage experiments at various gas ...
Dongming Zhang +3 more
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IMPROVING THE METHOD OF OPEN-PIT LIGNITE DEPOSITS DEVELOPMENT IN UKRAINE [PDF]
, 2018 Subject of the research is open-pit mining concerning a full- field industrial development of a number of lignite deposits; feasibility study has been performed for them as for the efficient environmental friendly processing of coal and associated ...
Adamchuk, A.A. +11 more
core
PhotoMat, EarlyView.This paper presents a comprehensive overview of recent advancements in Joule‐heating synthesis of photo and electrocatalysts, emphasizing its benefits and applications. The objective is to offer an effective strategy for enhancing the diversity and performance of catalytic materials.
Jiaqi Li +4 more
wiley +1 more source