Results 31 to 40 of about 3,986,383 (173)
With the majority of coal mines in uncovered and semi-covered coal strata now explored and developed, most of the undiscovered coal-bearing strata are concealed.
Kun Wang +4 more
doaj +1 more source
Mixed deposition is a sedimentary phenomenon of special significance to the tectonic movement, material supply, sea level change, and paleoclimate of the sedimentary environment.
Guangquan Zhang, Lidong Mi
doaj +1 more source
Penser le métier par la formation [PDF]
Cet ouvrage examine, à partir de chantiers empiriques, les questions posées par la conception des dispositifs au long de parcours de formation professionnelle. Il s’adresse au monde de la recherche, mais aussi aux étudiant·e·s, aux praticien·ne· s engagé·
Charlier, Evelyne +3 more
core +1 more source
Self‐Propelled HPB@Lip@AB Nanomotors Ameliorate Dry Eye Disease
A self‐propelled HPB@Lip@AB nanomotor system is developed for dry eye disease (DED) therapy, facilitating rapid penetration across ocular surface barriers while integrating hydrogen therapy with multi‐enzyme‐like antioxidant activity. The nanoplatform restores mitochondrial function, suppresses oxidative stress, inflammation, and apoptosis, and ...
Jing Li +9 more
wiley +1 more source
The coal measure gas sources of coal-derived gas fields in the Late Paleozoic China are the Lower Carboniferous Dishuiquan Formation, the Upper Carboniferous Batamayineishan Formation and Benxi Formation, the Lower Permian Taiyuan Formation and Shanxi ...
Chenchen Fang +4 more
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ABSTRACT Mining activities are prevalent worldwide and pose significant threats to the supply of ecosystem services (ESs) for humanity. Many mining areas face challenges related to recovery and reclamation following resource depletion. A key challenge for the sustainable development of these areas is how to achieve collaborative optimization of land ...
Luge Rong, Changwei An
wiley +1 more source
ABSTRACT Ti‐15Mo‐2.5Ag alloy exhibited a low modulus and strong antibacterial ability but poor bioactivity. To resolve this problem, sandblasting and anodization were used to create a hydrophilic and nano‐Ag2O‐containing TiO2 coating. Subsequently, the microstructure and physicochemical properties were investigated by scanning electron microscopy, X ...
Yanchun Xie +11 more
wiley +1 more source
Application and discussion of geological guidance technology for deep coalbed methane horizontal wells: A case study of block X in Shenmu gas field, Ordos Basin [PDF]
The Ordos Basin is rich in deep coalbed methane resources, with block X of the Shenmu gas field being a key exploration and development area for the Jidong Oilfield in the basin.
LIN WEIQIANG +8 more
doaj +2 more sources
Risk assessment of fault water inrush during deep mining
With the gradual depletion of shallow coal resources, the Yanzhou mine in China will enter the lower coal seam mining phase. However, as mining depth increases, lower coal seam mining in Yanzhou is threatened by water inrush in the Benxi Formation ...
Zhaodan Cao +3 more
doaj +1 more source
Microscopic characteristics and source identification of ambient particles based on electron microscopy: a case study of a steel city [PDF]
Advances in computer-controlled scanning electron microscopy (CCSEM) technology allow large volumes of single-particle microscopic characteristic data to be acquired.
Qian Liu +4 more
doaj +1 more source

