Results 141 to 150 of about 18,898 (219)

Numerical Simulation Study on Optimization of Horizontal Sublevel Top‐Coal Caving Mining Technique for Steeply Inclined Extra‐Thick Coal Seam

Energy Science &Engineering, EarlyView.
As the sublevel height increases, the top‐coal recovery amount gradually increases, but both the top‐coal recovery rate and the thickened top‐coal recovery rate show a downward trend, and the decline in the top‐coal recovery rate is gradually increasing. The comparison indicates that the optimal sublevel height is 20 m.
Hongsheng Tu, Dingyi Hao, Wenhong Xiao, Fuhao Jiang, Shikun Xu   +4 more
wiley   +1 more source

Quadratic decomposition based TCN-Transformer for time series prediction of micro-seismic signals in coal mines. [PDF]

Sci Rep
Gan Y, Huang C, Zhang Z, Lu W, Gao B, Cai X, Xu T.   +6 more
europepmc   +1 more source

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

Energy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu, Lei Guo, Zedong Sun, Xiaowei Wu, Nan Zhang   +4 more
wiley   +1 more source

Cloud-based slope risk monitoring and early warning system for open-pit coal mines: a case study of Zhonglian Runshi. [PDF]

Sci Rep
Dong X, Li S, Ma R, Tian W, Zhao K, Xiang H, Zhu J, Qiu Y.   +7 more
europepmc   +1 more source

Experimental and Numerical Investigation of Cedar Façade Flame Spread With Respect to Sidewall

Fire and Materials, EarlyView.
ABSTRACT In response to growing energy conservation and carbon neutrality efforts, façade systems incorporating wooden materials have attracted increasing attention, which in turn raises concerns about their combustibility. This study presents a combined experimental and numerical investigation of flame spread along cedar façades.
Xukun Sun, Hideki Yoshioka, Takafumi Noguchi, Yuhei Nishio, Manabu Kanematsu, Biao Zhou, Mingwei Xu   +6 more
wiley   +1 more source

Prediction of Nitrogen Injection Displacement Efficiency for High-Efficiency Methane Emission Reduction in Coal Mines: A TCN-BiGRU-MHA Hybrid Model. [PDF]

ACS Omega
Yang X, Wang Z, Pan W, Zhang Q, Xu J, Du F.   +5 more
europepmc   +1 more source

Quiet activism as feminist practice

Feminist Anthropology, EarlyView.
Abstract In this article, we discuss how women combat silencing in the face of violence and increased political turmoil through quiet activism in their day‐to‐day lives. Centering lengthy conversations with Arab women across London and notes from an ongoing collaboration with a feminist activist based in the US, we examine how wearable rhetorical ...
Vicky Panossian, Catherine A. Evans
wiley   +1 more source

Isolation and assessment of antibiotic resistance of Staphylococcus aureus in the air of an underground hard coal mines. [PDF]

Sci Rep
Paśmionka IB, Cheluszka P, Gospodarek J, Chmielowski K, Fries J.   +4 more
europepmc   +1 more source

Advancing Environmental Sustainability Through Wind Energy, Green Technology, and Fintech: A Quantile Perspective From Germany's Low‐Carbon Transition

Geological Journal, EarlyView.
The current study examines the role of Fintech, wind energy, and green technology in determining environmental suitability in Germany from 2000 to 2024. The study employs time series econometric methods to estimate the QQR and QR techniques. The positive effects of wind production, FinTech, Natural Resources and green technology on environmental ...
Hind Alofaysan, Kamel Si Mohammed
wiley   +1 more source

Impact of root exudates on soil reconstruction and bacterial community resumption in open-pit coal mines. [PDF]

Front Microbiol
Yang Z, Niu J, Wu T, Li J, Zhang L, Chen X, Berndtsson R.   +6 more
europepmc   +1 more source