Results 31 to 40 of about 18,898 (219)

Diversified and efficient utilization and evaluation of remaining coal resources of closed coal mines in Shanxi Province

Meitan kexue jishu
With the continuous development and transformation of coal industry, a large number of coal mines closed in Shanxi Province left rich coal resources. The efficient use of these resources can not only inject new vitality into the economic development of ...
Yongyong FAN, Wenfu YANG, Fuhui QI, Xingxing ZHANG, Wenlong SONG, Yufei SU, Hua XIE   +6 more
doaj   +1 more source

Overview of existing information on important closed (or in closing phase) and abandoned mining waste sites and related mines in Slovenia

Geologija, 2020
The presented work provides a comprehensive inventory of data on closed (or in closing phase) and abandoned underground and surface mines and mining waste sites in Slovenia, collected within the framework of the Geological Survey of Slovenia (GeoZS ...
Mateja GOSAR, Robert ŠAJN, Miloš MILER, Ana BURGER, Špela BAVEC   +4 more
doaj   +1 more source

Chemical Composition Variations of Altered and Unaffected Coals from the Huaibei Coalfield, China: Implications for Maturity

Energies, 2021
The composition characteristics of altered coals in the Huaibei Coalfield, China, was investigated through a comparative analysis between altered and unaffected coals from the Wolonghu, Taoyuan and Renlou coal mines.
Songbao Feng, Qiang Wei, Xianqing Li
doaj   +1 more source

Evaluation of the effect of macerals on coal permeability in Tazareh and Parvadeh mines [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2016
In recent decades, the subject of gas emission in underground coal mines in many countries is an important subject. Many factors affect in gas emissions in coal seams. Geological and physical structures of coal are affecting on gas emissions'.
Farhang Sereshki, Ahmad Vaezian, Amir Saffari   +2 more
doaj  

Summary of research on artificial intelligence empowerment technology for new generation intelligent coal mine

Gong-kuang zidonghua, 2023
The deep integration of the coal industry and artificial intelligence (AI) is an important path for modern mines to achieve intelligent personnel reduction, cost reduction, and efficiency improvement.
FU Xiang, QIN Yifan, LI Haojie, NIU Penghao   +3 more
doaj   +1 more source

Furfuryl Alcohol‐Driven Proton Supply Enables Efficient Photocatalytic H2O2 Production Beyond Water‐Based Systems

Advanced Science, EarlyView.
A ZnIn2S4–carbon dot heterojunction enables photocatalytic H2O2 production coupled with furfuryl alcohol oxidation. In this redox system, furfuryl alcohol acts as both the electron donor and oxidation substrate, producing furoic acid with 100% selectivity and 98% conversion while supporting efficient H2O2 generation with a solar‐to‐chemical conversion (
Pengfei Bai, Ning Li, Quan Zhou, Bin Liu, Xiangqian Fan, Lei Liu, Jingkai Lin, Weijie Ren, Shengliang Hu, Huayang Zhang   +9 more
wiley   +1 more source

Application of an Optimized PSO-BP Neural Network to the Assessment and Prediction of Underground Coal Mine Safety Risk Factors

Applied Sciences, 2023
Coal has played an important role in the economies of many countries worldwide, which has resulted in increased surface and underground mining in countries with large coal reserves, such as China and the United States.
Dorcas Muadi Mulumba, Jiankang Liu, Jian Hao, Yining Zheng, Heqing Liu   +4 more
doaj   +1 more source

A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks

Advanced Science, EarlyView.
Conceptual illustration of a Global Ecosystem Methane Observing System (GEM‐OS) integrating satellites, aircraft, atmospheric networks, and ecosystem measurements to quantify methane emissions from anthropogenic and natural sources. The multi‐scale observing framework improves source attribution, reduces uncertainty in regional methane budgets, and ...
P. Ciais, S. Peng, J. Chang, F. Li, Q. Zhu, K. Yuan, G. Hugelius, H. Li, Y. Cai, F. Chevallier, K. Tibrewal, E. A. Kort, K. Arndt, J. Watts, B. Buma, N. Besic, P. I. Palmer, H. Cadillo‐Quiroz, E. Euskirchen, M. J. Gondwe, A. Hoyt, R. Jackson, S. Malone, D. Monteverde, S. Natali, M. Ramonet, C. Rey‐Sanchez, L. B. Sagang, E. A. G. Schuur, R. Vargas, R. Varner, Z. Zhang, B. Poulter   +32 more
wiley   +1 more source

Research on evaluation and promotion strategy of data governance capability for intelligent coal mines

矿业科学学报
Data governance capability is fundamental to coal mine intelligence construction. It could accelerate the intelligent construction of coal mines and promote the digital transformation of the coal industry so as to building a modern energy system in ...
WANG Meijun, TAN Zhanglu, LI Huiyuan, LÜ Hanbing   +3 more
doaj   +1 more source

Photo‐Gated Corona Microfluidics

Advanced Science, EarlyView.
Photo‐gated corona microfluidics decouples optical programming from electric‐field actuation to enable reconfigurable manipulation on open, electrode‐pattern‐free surfaces. Near‐infrared irradiation locally melts paraffin, creating a reversible charge‐relaxation pathway that reconstructs the electric field.
Xiaxia Cui, Yiqing Liu, Xinyi Qiu, Manfei Liu, Biao Cheng, Yuan Zhou, Changguo Xue, Sheng Zhang, Xin Tang, Qiang Tang   +9 more
wiley   +1 more source