Results 71 to 80 of about 23,758 (276)

Dynamic cracking properties and generating conditions of coal under rapid gas release

Deep Underground Science and Engineering, EarlyView.
Gas release tests revealed that crack initiation and propagation are jointly controlled by initial crack length, residual strength, and gas release velocity. A new outburst risk coefficient was thus developed from a fracture mechanics perspective, offering a novel predictive approach.
Bing Zhang, Hanpeng Wang, Liang Yuan, Guofeng Yu, Wei Wang, Benliang Chen, Bo Ren   +6 more
wiley   +1 more source

Prediction of coal dust particle size after spraying dust reduction in roadway based on orthogonal experiment and regression analysis

Meitan kexue jishu
In order to investigate the main factors affecting the effect of spray dust reduction on the particle size of coal dust after spray dust reduction, a quantitative mathematical model was obtained to characterize the quantitative relationship between the ...
Bingyou JIANG, Yuqian ZHANG, Changfei YU, Ben JI, Haoyu WANG, Zhuang LIU   +5 more
doaj   +1 more source

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

Stratospheric dust collection by DUSTER (Dust in The Upper Stratosphere Tracking Experiment and Retrieval), a balloon-borne instrument, and laboratory analyses of collected dust.

, 2010
The subject of this work is focused on the study of stratospheric dust with DUSTER (Dust in the Upper Stratosphere Tracking Experiment and Retrieval) a balloon-borne instrument.
Ciucci, Alessandra
core  

Mixed‐Impurity Co‐Poisoning of NH3‐SCR Catalysts: Poisoning Mechanisms, Antagonistic Effects, and Anti‐Inactivation Strategies

EcoEnergy, EarlyView.
This review summarizes the synergistic effects of mixed impurities on ammonia‐selective catalytic reduction (NH3‐SCR) catalysts, including the poisoning mechanism of the catalyst caused by mixed impurities, the antagonistic effects between the impurities, and the research on the anti‐poisoning strategies for the catalyst in recent years.
Hongyan Xue, Manas Pal, Zhaoteng Xue, Dongsen Mao   +3 more
wiley   +1 more source

Research on influence of underground coal dust concentration and humidity on electromagnetic waves transmissio

Gong-kuang zidonghua, 2018
In order to improve quality of underground wireless communication and ensure effective communication, influence of underground coal dust concentration and humidity on electromagnetic wave transmission was researched.
ZHAO Shiping, SUN Xiuling, KAN Xiaoting
doaj   +1 more source

Solar Fuels Via Methane Valorization: Thermochemical Pathways, Unified Metrics, and Techno‐Economic Perspectives

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A first‐of‐its‐kind review benchmarks three solar methane valorization pathways with unified performance metrics for clean fuel production. Meeting global climate targets and sustainable energy demands requires carbon‐neutral fuels and innovative conversion pathways.
Muhammad Abdulmoez, Amjad Othman, Majid Linjawi, Amro Al‐Qutub   +3 more
wiley   +1 more source

Optical Estimation on Pollution Level of Respirable Dust Based on Infrared Transmitting Behavior in Coalmine Fully Mechanized Working Face

Journal of Spectroscopy, 2016
Respirable coal particle generated during underground mining is the main cause for gas-dust explosions and coal workers’ pneumoconiosis (CWP) which needs accurate monitoring especially on its concentration.
Wen-Zheng Wang, Yan-Ming Wang, Guo-Qing Shi   +2 more
doaj   +1 more source

The Briquetting of Coal Dust [PDF]

Scientific American, 1910
n ...
openaire   +2 more sources

Anchoring MoS2 Petal‐Like Nanosheets on Coal‐Based Carbon Nanofibers by Surface Bonding Enable Li+/Na+ Batteries to Achieve Fast‐Charging Capabilities

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The unique structure connected by CS and COS interfacial bonds accelerates the reaction kinetics of lithium/sodium‐ion storage, while the addition of coal led to an increase in the mechanical strength of the carbon nanofibers, which improved the conductivity and stability of the materials.
Zhenjiang Lu, Qiuye Deng, Gaoyuan Liu, Xinxin Yin, Nana Zheng, Jing Xie, Jindou Hu, Yali Cao, Dianzeng Jia   +8 more
wiley   +1 more source