نتایج جستجو برای: pit lake
تعداد نتایج: 50951 فیلتر نتایج به سال:
A detailed investigation of the mineralogy of As in the tailings of the Rabbit Lake uranium ore processing facility was conducted. The milling/ ore extraction process was sampled at three different locations to obtain information about when, where and under what condition secondary As phases form. These samples were compared with four samples of varying As content from the Rabbit Lake in-pit ta...
in this study, a hybrid intelligent model has been designed to predict groundwater inflow to a mine pit during its advance. novel hybrid method coupling artificial neural network (ann) with genetic algorithm (ga) called ann-ga, was utilised. ratios of pit depth to aquifer thickness, pit bottom radius to its top radius, inverse of pit advance time and the hydraulic head (hh) in the observation w...
به منظور شناسایی تنوع آللی و ژنوتیپی نواحی اگزون ششم و اینترون پنجم ژن pit-1 در جمعیت مرغ بومی مرکز پرورش و اصلاح نژاد استان آذربایجان غربی، از تعداد100 قطعه پرنده برای خونگیری در تحقیق اخیر استفاده شد.dna ژنومی از نمونه های خون استخراج گردید و دو قطعه با اندازه 179 جفت بازی و 599 جفت بازی بترتیب برای نواحی اگزون ششم و اینترون پنجم با استفاده از واکنش زنجیره ای پلی مراز، تکثیرشدند. محصولات پی س...
the determination of the ultimate pit limit (upl) is the first step in the open pit mine planning process. in this stage that parts of the mineral deposit that are economic to mine are determined. there are several mathematical, heuristic and meta-heuristic algorithms to determine upl. the optimization criterion in these algorithms is maximization of the total profit whilst satisfying the...
Sediment cores were collected to investigate multiple stresses on Clear Lake, California, USA, through the period of European occupation to the present day. Earlier workers suggested the hypothesis that the use of mechanized earthmoving equipment, starting in the 1920s and 1930s, was responsible for erosion, mercury (Hg) contamination, and habitat loss stresses. Cores (approximately 2.5 m in de...
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