نتایج جستجو برای: beryl
تعداد نتایج: 217 فیلتر نتایج به سال:
Graham Serjeant’s remarkable memoir of his distinguished career studying and taking care sickle cell disease patients in Jamaica is a very unusual combination: recounting half-century progress understanding treating this also fascinating travelogue. Serjeant begins the tale professional with journeys, first as London medical student east Africa then choice Jamaica’s programme 1966 for major pos...
The fluids in of pegmatite rare metal deposits are generally rich elements and volatiles (B, P, F, H2O, CO2, etc.), they have a high capacity for dissolving migrating metals. Dakalasu No. 1 vein is located northwest China’s Altay orogenic belt. Previous studies indicated that it small- to medium-sized beryllium-niobium-tantalum deposit. It showed significant mineral assemblage zonations from th...
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The salting-out effect of various solutions of electrolyte in the extraction of tantalum and niobium using aqueous biphasic system (ABS) was investigated. This was achieved by leaching ball-milled Tantalite ore with mineral acids (H2SO4 and HF) in the ratio of 3:1. The leached liquor was then divided into five parts and each part mixed with ABS formed (e.g. PEG-3350/20wt/wt Na2CO3) for the extr...
(2016). Calcium dependent plasticity applied to repetitive transcranial magnetic stimulation with a neural field model. (2016). Real-time automated EEG tracking of brain states using neural field theory. propensity under forced desynchrony in a model of arousal state dynamics. (2016). The spatiotemporal hemodynamic response function for depth-dependent functional imaging of human cortex. (2015)...
Lawyers who represent their clients in mediation may often find themselves at odds with their mediators. The mediators may be trying to create new value for the parties, beyond a simple compromise of their legalistic claims and defenses. They may be seeking to repair or improve the parties’ relationship, or they may wish to lead the parties to greater mutual understanding. Lawyers, on the other...
A program of geologic mapping and lithogeochemical and geochronological sampling has been carried out over a 745-km area of the Atacama Desert surrounding the porphyry Cu deposits at Escondida, Zaldívar, and Chimborazo (Cordillera de Domeyko, northern Chile). The purpose of this study was to examine the regional tectonic and magmatic setting of this preeminent porphyry Cu district for evidence ...
The Nuweibi intrusion was emplaced during the final tectono-magmatic stage of Arabian-Nubian Shield development (ANS). Two cogenetic phases can be recognized in field: early phase is represented by porphyritic albite granite and non-porphyritic granite. Mineralogically, both are essentially composed albite, quartz, K-feldspars with subordinate muscovite. Accessory minerals include fluorite, zir...
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