Results 81 to 90 of about 27,740 (262)

Hydraulic weakening technology for unsupported top coal at the end of fully mechanized caving face

Gong-kuang zidonghua
To address the issue of excessive unsupported top coal length and delayed caving at the end of a fully mechanized caving face, a hydraulic weakening technology for face-end top coal in steeply inclined thick coal seams was proposed based on the coal ...
DONG Haofu, ZHANG Wei, SUN Guangjun, FU Huijian, LONG Zhaoxi, LIU Yang, LIU Dongliang, ZHU Xiaodong   +7 more
doaj   +1 more source

China's Low‐Carbon Energy Transition Over the Past Two Decades: Experiences and Implications

Advanced Science, EarlyView.
China's low‐carbon energy transition features a brief decline and subsequent rebound in coal consumption, alongside the rapid expansion of renewable energy. This study develops a stage‐based analytical framework to explain this evolution from the perspectives of economic development, energy security, and environmental sustainability, revealing how ...
Yu Liu, Zhiyu Tian, Zhengxian Zhang, Xinbei Li   +3 more
wiley   +1 more source

Integrated geophysical exploration of water-rich abnormalities in coal mine roofs: Example from the 31 123-1 panel, Dongxia Coal Mine

AIP Advances
Water inrush problems in coal mines pose a serious threat to safe and efficient production. How to effectively predict the potential water bodies in abnormal roof and floor strata is the key to water control in coal mines.
Hongli Liu, Jie Chen, Genfa Yang, Keyin Guo, Yidong Li, Hongfeng Lv, Junyu Xu, Guozhi Da   +7 more
doaj   +1 more source

Instability mechanism of coal pillar in steeply dipping ultra-thick coal seam “segmented and stratified” combined mining

Meikuang Anquan
In order to solve the problems of frequent high energy microearthquakes and large roadway deformation in full-mechanized caving “segmented and stratified” combined mining in Yanbei Coal Mine with large dip angle and extra-thick coal seam, theoretical ...
Yong LIU, Yao YANG, Xiao WANG, Wenqiang WANG, Xuesong WU, Anye CAO, Zujun LU, Tao YANG, Zhanquan WEI   +8 more
doaj   +1 more source

Bridging Performance and Fate: A Framework for Sustainable, Composite‐Based Flexible Electronic Systems

Advanced Electronic Materials, EarlyView.
Composite‐based flexible electronics integrate biodegradable polymers, conductive networks, and multilayer device architectures to balance electrical performance, mechanical durability, and controlled degradation. Interfacial engineering and encapsulation regulate transport stability and operational lifetime, while programmed disassembly enables ...
Sayam, Sangho Cho
wiley   +1 more source

Mechanical analysis of floor deformation and floor heave control technology for gob-side entry retaining in medium thick coal seam with shallow cover depth

Meitan kexue jishu
Gob-side entry retaining technology is of great significance to improve coal recovery rate, improve roadway stress environment and ensure mine safety and efficiency.
Chaochao YAN, Guoen ZHANG, Tong CHANG, Pengfei WANG, Tianping WANG, Changquan WU   +5 more
doaj   +1 more source

Safety of Sodium‐Ion Batteries: Evaluation and Perspective from Component Materials to Cells, Modules, and Packs

Advanced Energy Materials, EarlyView.
This review provides a bottom‐up evaluation of sodium‐ion battery safety, linking material degradation mechanisms, cell engineering parameters, and module/pack assembly. It emphasizes that understanding intrinsic material stability and establishing coordinated engineering control across hierarchical levels are vital for preventing degradation coupling ...
Won‐Gwang Lim, Seoa Kim, Erik A. Wu, Darren H. S. Tan, Shawn Peng, Xiaolin Li   +5 more
wiley   +1 more source

Electrocatalytic Urea Waste Valorization via Water Electrolysis: Transition‐Metal Phosphides for Sustainable Hydrogen Production

Advanced Energy Materials, EarlyView.
This article provides a comprehensive analysis of transition metal phosphides (TMP) as electrocatalysts for urea‐assisted water electrolysis, highlighting the critical role of phosphorus engineering in modulating electronic structure, optimizing active sites, and enhancing catalytic durability.
Shivalingayya Gaddimath, Varsha Kashanner, Soumya Kulkarni, Vishal Sorathiya, Anitha Bamani, Rajveer Singh Rajaura, Mahaveer Kurkuri, Shambhulinga Aralekallu, Yogendra Kumar Mishra   +8 more
wiley   +1 more source

Failure mechanisms of sandstone subjected to cyclic loading considering stress amplitude effects

International Journal of Coal Science & Technology
In underground engineering fields, such as mining engineering, rocks are often subjected to cyclic loading, resulting in the deterioration of their mechanical properties, which poses a serious threat to engineering construction.
Qican Ran, Yunpei Liang, Quanle Zou, Zihan Chen, Jinfei Zhan, Liang Chen, Zhaopeng Wu, Tengfei Ma   +7 more
doaj   +1 more source

Canaries in the Coal Mine

Professional Case Management, 2021
openaire   +3 more sources