Results 11 to 20 of about 825,598 (261)
Occurrence of asbestos in soils: state of the art
Episodes, 2020 In the last decades, it has been widely demonstrated the risk to human health related to asbestos fibres exposure. Many studies have mainly focused on the mineralogical and geochemical characterization of ophiolites (i.e., serpentinite and metabasite rocks) since they are the main lithotypes associated with Naturally Occurring Asbestos (NOA ...
Ricchiuti C., Bloise A., Punturo R.
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Yankuang ceshi, 2022 BACKGROUND Microbeam analytical technology can be used to accurately analyze the petrography, morphology, structure, component and isotopic composition of ore minerals on the micro-nano scale, which plays a vital role in supporting the detailed research ...
TU Jiarun +7 more
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Canadian Journal of Philosophy, 2018 In The Mind’s Construction, Matthew Soteriou argues that some mental states must be occurrent in their nature, owing to the role they play in the general structure of experience. This chapter argues that Soteriou underestimates the difficulties inherent in making it plain how something occurrent could be a state, at any rate on the most natural ...
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Yankuang ceshi, 2021 BACKGROUND The Huayangchua polymetallic deposit is a super-large mineral deposit that has economic endowments of uranium and rare earth resources. The deposit is characterized by the unique ore types and complex mineral assemblage.
WAN Jian-jun +9 more
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Occurrence of Rare Earth, Iron, Phosphorus and Calcium in High Grade Rare Earth Concentrate
Kuangchan zonghe liyong, 2022 Rare earth grade of Bayan Obo mixed rare earth concentrate is 65.86%, and the contents of P2O5, CaO and TFe are 11.26%, 3.89% and 1.34%, respectively. Chemical analysis, automatic mineral analysis system, SEM and EDS were used to study the occurrence of ...
Na Li +3 more
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Petroleum Exploration and Development, 2023 A quantitative evaluation model that integrates kerogen adsorption and clay pore adsorption of shale oil was proposed, and the evaluation charts of adsorption-swelling capacity of kerogen (Mk) and adsorbed oil capacity of clay minerals (Mc) were ...
Jinbu LI +9 more
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Applied Sciences, 2023 Carbonate reservoirs usually have strong heterogeneity, with complex pore structure and well-developed natural fractures. During reservoir development, when the formation pressure is lower than the bubble point pressure of crude oil, the fluid undergoes ...
Pin Jia +4 more
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THE OCCURRENCE OF SPRUE IN THE UNITED STATES [PDF]
The American Journal of the Medical Sciences, 1915 n ...
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Kuangchan zonghe liyong, 2023 This is a paper in the field of process mineralogy. A silica-type tungsten and molybdenum mine in Shaanxi has diverse ore types and large variations in tungsten and molybdenum grades, and it is difficult to improve the concentrate grade and recovery ...
Ying Jiang +5 more
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