Results 61 to 70 of about 2,891 (238)

Influence Mechanism of Main Roof Height on Surrounding Rock Stability of Gob-Side Entry Driving [PDF]

, 2018
The main roof directly affects the stress environment and the control effect of the surrounding rock of gob-side entry driving. A mechanical model of the surrounding rock of gob-side entry driving was established to analyze the influence mechanism of ...
Gao-feng Chen, Hai-qing Shuang, Ki-il Song, Liang-chang Shen, Peng Xiao, Shu-gang Li   +5 more
core   +2 more sources

Nanotherapies for Atherosclerosis: Targeting, Catalysis, and Energy Transduction

Advanced Healthcare Materials, EarlyView.
Atherosclerosis management is hindered by poor drug targeting and plaque heterogeneity. Nanotechnology overcomes these barriers via three core strategies: (1) target‐engineered nanocarriers that achieve lesion‐specific precision via ligand modification, biomimetic camouflage, stimuli‐responsive release, and self‐propelling nanomotors; (2) catalytic ...
Yuqi Yang, Jingguo Qu, Tonghuan Xiao, Xinyang Han, Michael Tin‐Cheung Ying   +4 more
wiley   +1 more source

Control of floor heaves with steel pile in gob-side entry retaining

International Journal of Mining Science and Technology, 2016
Abstract A new approach named as steel pile method is innovatively proposed in this study to control severe floor heaves in gob-side entry retaining. It is required that the steel piles be installed in the floor corners with a certain interval before the influence of the dynamic pressure induced by current panel extraction. Using numerical simulation
Ying Xu, Jin Chen, Jianbiao Bai
openaire   +1 more source

Review: Insight on Porous Carbon Positive Electrode for Sodium‐Ion Capacitors: Interplay Between Synthesis, Properties, and Performance

Advanced Science, EarlyView.
Sodium ion capacitor (SIC) is currently constrained by the low discharge capacity of commercial activated carbon as positive electrode material. This review provides a holistic summary of research efforts on alternative porous carbon materials for SIC. Image created by the authors with www.biorender.com.
Ademola Adeniji, Adrian Beda, Camélia Matei Ghimbeu   +2 more
wiley   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

Advanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen, Wei Zeng, Zherui Zhao, JiYu Zhao, Ziyan Huang, Zhuo Chen, Kui Zhou, Guanglong Ding, Su‐Ting Han, Ye Zhou   +9 more
wiley   +1 more source

Geologic considerations in underground coal mining system design [PDF]

, 1981
Geologic characteristics of coal resources which may impact new extraction technologies are identified and described to aid system designers and planners in their task of designing advanced coal extraction systems for the central Appalachian region ...
Camilli, F. A., Harris, J., Mangolds, A., Maynard, D. P.   +3 more
core   +2 more sources

Numerical Investigation of Gob‐Side Entry Retaining through Precut Overhanging Hard Roof to Control Rockburst [PDF]

Advances in Civil Engineering, 2018
Gob‐side entry retaining through precut overhanging hard roof (GERPOHR) method is one of the commonly used methods for nonpillar mining. However, feasibility studies of controlling rockburst by this method are few. Rockburst occurs in hard thick strata with a higher probability, larger scale, and higher risk.
Xiaoming Sun, Li Gan, Zhao Chengwei, Tang Jianquan, He Manchao, Song Peng, Miao Chengyu   +6 more
openaire   +2 more sources

Adsorption Desulfurization of Liquid Fuel Using a Blend of Date Stones and Walnut Shells by Box–Behnken Design

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT A specific microporous KOH/activated‐biochar (K/BC) was produced from a blend of date stones (DS) and walnut shells (WS) and used in the adsorptive desulfurization (ADS) of two types of model fuel DBT/n‐hexane (S‐hex), DBT/cyclohexane (S‐cyclohex).
Ameen L. Alyawer, Marwa H. Altamer, Ahmed M. Khalaf, Amena F. Al‐Omari, Abdelrahman B. Fadhil   +4 more
wiley   +1 more source

Research on surrounding rock control system of double roadway combined with roof cutting gob-side entry retaining and gob-side entry driving

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Double-roadway tunneling technology can effectively relieve the mining‐replacement pressure associated with the combined use of double roadways and gob-side entry driving in traditional longwall panels, but it also introduces difficulties in maintaining ...
Dongdong Chen, Zhixuan Zhang, Wenrui He, Fangfang Guo, Huilong Zhang   +4 more
doaj   +1 more source

Design and application of solid, dense backfill advanced mining technology with two pre-driving entries

International Journal of Mining Science and Technology, 2015
New solid backfill mining technology provides unique technical advantages for “three-under” coal mining which refers to coal resources trapped under buildings, railways, and water bodies.
Qiang Zhang, Jixiong Zhang, Shuai Guo, Rui Gao, Weikang Li   +4 more
doaj   +1 more source