Results 11 to 20 of about 2,742,526 (343)
The occurrence and transport of microplastics: The state of the science
Science of The Total Environment, 2021 Microplastic (MP) particles have been observed in most environments and concentrations are expected to increase over the coming decades given continued and increased production of synthetic polymer products. The expected increase in plastic pollution (including MPs) may elevate the risk posed by these synthetic particles to both environmental and human
Fritz, Petersen, Jason A, Hubbart
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工程科学学报, 2021 Iron ore sintering is a process in which iron ore powder, flux, iron-bearing dust, solid fuel (such as coke powder), and return fines are mixed in a certain proportion, granulated, and then processed into agglomerates by high-temperature generated by ...
Hao ZHOU +3 more
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Areas of natural occurrence of melipona scutellaris Latreille, 1811(Hymenoptera: Apidae) in the state of Bahia, Brazil. [PDF]
, 2012 The bee Melipona scutellaris is considered the reared meliponine species with the largest distribution in the North and Northeast regions of Brazil, with records from the state of Rio Grande do Norte down to the state of Bahia. Considering the importance
ALVES RMO +29 more
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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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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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Anthropogenic Causes of Peatland Species Vanishing in the Glinno Ługi Area [PDF]
, 2011 The paper presents information about the occurrence and state of preservation of valuable peat-bog species as well as about the threats facing them. The anthropopressure-related changes which occurred in the habitat of the Glinno Ługi peatland and their ...
Komperda, Agata, Woziwoda, Beata
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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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