Results 71 to 80 of about 27,132 (199)
English for Study and Work: Coursebook in 4 books. Book 2 Obtaining and Processing Information for Specific Purposes [PDF]
, 2015 Подано всі види діяльності студентів з вивчення англійської мови, спрямовані на розвиток мовної поведінки, необхідної для ефективного спілкування в академічному та професійному середовищах.
Зуенок, И. И. +15 more
core
Mountain‐top spherules: Criteria to identify natural and synthetic particles
Meteoritics &Planetary Science, EarlyView.Abstract Natural microspherules are important tracers of geologic and environmental processes in modern and ancient deposits. However, anthropogenic contamination can dilute natural collections by releasing synthetic microspherules into the environment.
M. R. Boyd, M. J. Genge
wiley +1 more source
Coal Mine Safety and Health [PDF]
, 2008 [Excerpt] Safety in the coal mining industry is much improved compared to the early decades of the twentieth century, a time when hundreds of miners could lose their lives in a single accident and more than 1,000 fatalities could occur in a single year ...
Levine, Linda
core +4 more sources
Research on safe power threshold of radio wave explosion-proof in coal mine
Gong-kuang zidonghua, 2022 In order to prevent gas explosion caused by radio waves emitted by wireless equipment in the coal mine, the power and energy of radio waves in coal mines should be limited.
LIANG Weifeng +4 more
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 3, May 2026.The study developed a PVDF/SiO2 humidity sensor with superhydrophobic properties and integrated the humidity sensor into the intelligent powered air‐purifying respirator (IPAPR) for breath monitoring. Coupled with the Gated Recurrent Unit (GRU) machine learning prediction algorithm, it enables feedforward control of the fan to achieve respiratory ...
Xinjian He +9 more
wiley +1 more source
Analysis of a historical accident in a Spanish coal mine [PDF]
, 2019 There has been a long history of coal mine accidents and these, usually, involve serious injuries, fatalities, and the destruction of facilities. In the seventies, an explosion killed 28 miners in a Spanish coal mine.
Anticoi Sudzuki, Hernán Francisco +2 more
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Advanced Energy and Sustainability Research, Volume 7, Issue 4, April 2026.Electrochemical recycling of spent LiBs is emerging as a transformative alternative. This work evaluates key electrochemical strategies, including indirect recycling via metal dissolution and selective recovery, and direct regeneration via relithiation under mild conditions.
Dazhi Yao, Long Ji, Yonggang Jin
wiley +1 more source
Gong-kuang zidonghua, 2020 In view of problems of rotary drilling technology for soft-fragmentized coal seam, such as shallow borehole completed depth, uncontrollable borehole trajectory, low drilling efficiency and poor gas drainage effect, pneumatic directional drilling ...
KONG Qingjun, CHU Zhiwei
doaj +1 more source
Large-Scale Li-Ion Battery Research and Application in Mining Industry
Energies, 2022 The lithium-ion battery (LIB) has the advantages of high energy density, low self-discharge rate, long cycle life, fast charging rate and low maintenance costs. It is one of the most widely used chemical energy storage devices at present.
Lingyu Meng +7 more
doaj +1 more source
EcoMat, Volume 8, Issue 4, April 2026.Engineered cellulose—enabled by functionalization, hybridization, and nano‐engineering—emerges as a versatile platform driving next‐generation solutions in water purification, CO2 capture, air filtration, soil remediation, energy storage, and sustainable packaging. ABSTRACT Engineered cellulose is redefining the frontier of sustainable materials in the
Amir Hossein Behroozi +1 more
wiley +1 more source