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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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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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Injury Occurrence and Mood States During a Desert Ultramarathon [PDF]
Clinical Journal of Sport Medicine, 2012 To describe injuries and illnesses presented and profile mood states and sleep patterns during a desert environment ultramarathon.Prospective study gathering data on mood states and injury patterns.: Gobi Desert, Mongolia.Eleven male competitors (mean mass, 83.7 ± 7.1 kg; body mass index, 24 ± 1.79 kg/m; age, 33 ± 11 years).Injuries were clinically ...
Graham, Scott M +6 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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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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Semantic Concept Co-Occurrence Patterns for Image Annotation and Retrieval. [PDF]
, 2016 Describing visual image contents by semantic concepts is an effective and straightforward way to facilitate various high level applications. Inferring semantic concepts from low-level pictorial feature analysis is challenging due to the semantic gap ...
Bhanu, Bir, Feng, Linan
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Types, element occurrence forms and enrichment mechanisms of rhenium metal deposits
地质科技通报, 2021 Rhenium is a strategic rare metal mineral that rarely forms independent deposits.Most of it is produced in the form of associated elements in the porphyry magmatic hydrothermal system.Studies have shown that rhenium-rich deposits are mainly distributed ...
Chengjiao Zhou +2 more
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