Results 31 to 40 of about 1,590 (296)
Substantiation parameters of man-caused deposit in pit internal dump at the placer deposits surface mining [PDF]
, 2020 Обґрунтування ефективних параметрів техногенних родовищ розміщених на території внутрішніх відвалів кар’єрів з розробки розсипних родовищJustification of the effective parameters of man-caused deposits located on the territory of pit internal dumps at ...
Дичковський, Р. О. +1 more
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Известия высших учебных заведений: Геология и разведка, 2015 Dzhagdy-Selemdzinskaya metallogemc zone is shown to be the one of the most productive gold-bearing zones in Priamurskaya province. The placer and ore deposits mined in the area are estimated to be about 350 t of gold, including 293,811 of placer and 57 ...
V. A. Stepanov, A. V. Melnikov
doaj +2 more sources
JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2022 The information through social media shows that there is quite an intense placer mining activity by local residents in the Bantimurung area, Tondong Tallasa District, Pangkep Regency.
Ulva Ria Irfan +2 more
doaj +1 more source
MICRO-PIXE ANALYSIS OF PLATINUM-GROUP MINERALS FROM PLACER DEPOSITS [PDF]
, 1992 Micro-PIXE and EPMA analyses of platinum-group minerals from placer deposits are being used in an attempt to determine whether the PGM are derived from ultramafic rocks by weathering, or formed directly in the placer by chemical accretion.
Criddle, Alan J. +11 more
core +1 more source
Известия высших учебных заведений: Геология и разведка, 2018 Identification of indicators on placer gold allowed predicting formation types of primary sources of gold and their location in the East Siberian platform, overlapped by thick cover of Meso-Cenozoic deposits, where traditional methods of prospecting of ...
Z. S. Nikiforova
doaj +1 more source
Dredging technology at placer gold deposits in the Far North
Journal of Degraded and Mining Lands Management, 2023 The volumes of world gold mining were reviewed. As a result of the analysis, it was found that the proportion of placer gold is very insignificant. This is due to the fact that the most easily accessible reserves are substantially depleted, and the ...
Ravil Z Nafikov +3 more
doaj +1 more source
Innovative methods of extracting the loose gold from technogenic deposits in the Irkutsk region
MATEC Web of Conferences, 2018 In Russia and abroad, the scope of the use of gold has significantly expanded, which undoubtedly affected the level of production. However, despite the fairly high rates of gold mining, the economic situation that has developed in recent years makes the ...
Golovina Elena +2 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Animal‐assisted activities (AAAs) with therapy dogs have shown positive effects on patient well‐being and quality of life in various areas of medicine, including pediatric oncology. However, research on this topic is limited. The aim of this study is to present the current status of AAA in pediatric oncology in Germany, Austria, and
Jan‐Marius Wedig +7 more
wiley +1 more source
Preliminary literature review of potential environmental and biological concerns related to placer mining on the southern Oregon coast [PDF]
, 1990 Preliminary evaluation of heavy-mineral content of continental shelf placer deposits off Cape Blanco, Rogue River, and Umpqua River / by LaVerne E. Kulm and Curt D.
core
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source