one of the main concerns of the mining industry is to determine ultimate pit limits. final pit is a collection of blocks, which can be removed with maximum profit while following restrictions on the slope of the mine’s walls. the size, location and final shape of an open-pit are very important in designing the location of waste dumps, stockpiles, processing plants, access roads and other surfac...

background: sacral pit is a shallow or deep dimple in the lower sacral region, with a reported prevalence of 3-5% among newborns. the aim of the present study was to investigate spinal cord abnormalities in newborns with sacral pit via ultrasound examinations. methods: in this descriptive study, 3071 infants born at 34-42 weeks of gestation were studied in hospitals affiliated to islamic azad u...

OBJECTIVE Elevated serum phosphate has emerged as a major risk factor for vascular calcification. The sodium-dependent phosphate cotransporter, PiT-1, was previously shown to be required for phosphate-induced osteogenic differentiation and calcification of cultured human vascular smooth muscle cells (VSMCs), but its importance in vascular calcification in vivo and the potential role of its homo...

Lentic ecosystems play a major role in the global carbon cycling but understanding of environmental determinants lake metabolism is still limited, notably small artificial lakes. Here effects conditions on and CO2 CH4 emissions were quantified 11 gravel pit lakes covering gradient ecosystem maturity, ranging from young oligotrophic to older, hypereutrophic The diffusive fluxes ranged −30.10 37....

The main aim of this work was to determine the levels multiple natural radionuclides in an aquatic system (Moulouya river, Morocco) impacted by abandoned Zinc and Lead mines. 238U, 234U, 232Th, 230Th 210Po were determined alpha-particle spectrometry water sediment samples collected along river from three pit lakes mines, located Upper Moulouya catchment area. results enabled analysis different ...

Development of robust reclamation designs would require understanding the relative effects climate change on water budget reclaimed Athabasca oil sands landforms (Alberta, Canada). A surplus is critical to sustain pit lakes and periodically freshen localized surface ponds within closure landscape. In this study, four hypothetical future scenarios were developed from statistically downscaled RCP...

Abstract The aim of this work was to determine which parameters are sufficient measure in order describe the water quality a pit lake and identify patterns data among different kind lakes. consisted ambient dose equivalent rate, elemental radionuclide concentration, pH, specific conductance surface sediment samples collected from types mines. Data were tested for normality log-normality used pr...