Results 61 to 70 of about 63,148 (319)

Demonstration Coal Mines [PDF]

Scientific American, 1920
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openaire   +2 more sources

Silicosarcoidosis: Histologic and Clinical Features of an Occupational Granulomatous Disease

American Journal of Industrial Medicine, EarlyView.
ABSTRACT Sarcoidosis is a multisystem inflammatory disease of unknown etiology. Growing evidence indicates that occupational exposure to respirable crystalline silica (RCS) is associated with an increased incidence of sarcoidosis. Yet a diagnosis of sarcoidosis rarely prompts investigation to identify preventable exposures.
Jeremy T. Hua, Carlyne D. Cool, Einat Fireman Klein, Yochai Adir, Lukas J. Lee, Lauren M. Zell‐Baran, Robert A. Cohen, Richard C. Kraus, E. Brigitte Gottschall, Silpa D. Krefft, Charles Van Hook, Cecile S. Rose   +11 more
wiley   +1 more source

Numerical analysis on the factors affecting post-peak characteristics of coal under uniaxial compression

International Journal of Coal Science & Technology
The post-peak characteristics of coal serve as a direct reflection of its failure process and are essential parameters for evaluating brittleness and bursting liability.
Zhiguo Lu, Wenjun Ju, Fuqiang Gao, Taotao Du   +3 more
doaj   +1 more source

Technology, Institution, and Regional Growth: Evidence from Mineral Mining Industry in Industrializing Japan [PDF]

arXiv, 2021
Coal extraction was an influential economic activity in interwar Japan. Initially, coal mines employed both males and females as the workforce in the pits. However, the innovation of labor-saving technologies and the renewal of traditional extraction methodology induced institutional change.
arxiv  

Impact of Fiber Morphology and Content on the Thermal Stability, and Mechanical Performance of Maple Wood Fiber‐Polypropylene Composites

Journal of Applied Polymer Science, EarlyView.
ABSTRACT In recent years, natural‐fiber‐reinforced polymers have gained significant attention due to their sustainability and enhanced properties. This study used Canadian maple wood fiber as reinforcement in a polypropylene (PP). Fiber length and fiber content are known as key factors affecting the properties of the composites.
Farshid Basiji, Fouad Erchiqui, Ahmed Koubaa, Ismaeil Ghasemi, Abdessamad Baatti   +4 more
wiley   +1 more source

Study on the influence of confining pressure and unloading damage on the bursting liability characteristics of coal

Frontiers in Earth Science, 2023
The research on the bursting liability of coal under confining pressure and unloading damage is critical in creating prevention mechanisms for coal mass rock bursts in deep underground mines.
Taotao Du, Taotao Du, Taotao Du, Junfeng Pan, Junfeng Pan, Junfeng Pan, Yongxue Xia, Yongxue Xia, Yongxue Xia, Ruda Sun, Ruda Sun, Ruda Sun   +11 more
doaj   +1 more source

The Value Chain of Sustainable Dual Carbon Sodium Ion Capacitors

Batteries &Supercaps, EarlyView.
Sodium‐ion capacitors (SICs) bridge the energy‐power gap between batteries and supercapacitors, offering sustainable and scalable energy storage solutions. This review provides a 360‐degree perspective on SIC technology, covering material choices, presodiation strategies, manufacturing challenges, applications and life cycle assessment to ensure ...
Roman Mysyk, Daniel Carriazo, Damien Saurel, Maria Arnaiz, Olivier Crosnier, Thierry Brousse, Kangkang Ge, Pierre‐Louis Taberna, Patrice Simon, Sander Ratso, Einar Karu, Alberto Varzi, Juan Pablo Badillo, Andrea Hainthaler, Akshaya Sidharthan, Andrea Balducci, Obinna Egwu Eleri, Amaia Saenz de Buruaga, Javier Olarte, Juan Dayron Lopez Cardona, Fatemeh Bahmei, Sebastian P. Bautista, Marcel Weil, Jon Ajuria   +23 more
wiley   +1 more source

Test study on impact resistance of hydraulic support based on energy-absorbing material

Meikuang Anquan
The application of energy-absorbing material on the top beam of the hydraulic support can effectively improve its impact resistance under instantaneous dynamic loading.
Shiwei LI, Yajun XU, Jie ZHOU, Shangyu DU, Xiaoliang PANG, Sai ZHANG   +5 more
doaj   +1 more source

Analysis and prevention of impact damage in deep goaf roadway under dynamic and static load

Gong-kuang zidonghua, 2021
The existing research on rock bursts in goaf roadway mainly focuses on the static load caused disaster. However, there is few research on the dynamic load superimposed disaster mechanisms based on static load.
TANG Jiebing1,2,3, JU Wenjun1,2,3, CHEN Fabing1,2,3   +2 more
doaj   +1 more source

Protocol for a Study of the Effect of Surface Mining in Central Appalachia on Adverse Birth Outcomes [PDF]

arXiv, 2020
Surface mining has become a major method of coal mining in Central Appalachia alongside the traditional underground mining. Concerns have been raised about the health effects of this surface mining, particularly mountaintop removal mining where coal is mined upon steep mountaintops by removing the mountaintop through clearcutting forests and explosives.
arxiv