Volume 50, Issue 1
مرور بر اساس
ارسال های اخیر
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Transient Fluid Flow Modeling in Fractured Aquifer of Sechahoon Iron Mine Using Finite Element Method
(University of Tehran, 2016-06-01)Considering the fact that a large volume of iron reserve in the Sechahoon Iron Mine in Yazd Province has located under the water table, it is necessary to conduct a comprehensive study on water flow within the pit and its ...
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A New Analytical Solution for Determination of Acceptable Overall settlement of Heap Leaching Structures Foundation
(University of Tehran, 2016-06-01)There are some artificial and natural materials on foundation of heap leaching structures. Geomembrane liner is the most important artificial isolated layer of these structures. The thickness of this layer is about 1 to 2 ...
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Effects of Weak Layer Angle and Thickness on the Stability of Rock Slopes
(University of Tehran, 2016-06-01)This paper researches two key factors (angle and thickness) of a weak layer in relation to their influencing mechanism on slope stability. It puts forward the sliding surface angle and morphological model criteria for the ...
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An imperialist competitive algorithm for solving the production scheduling problem in open pit mine
(University of Tehran, 2016-06-01)Production scheduling (planning) of an open-pit mine is the procedure during which the rock blocks are assigned to different production periods in a way that the highest net present value of the project achieved subject ...
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Identification of Ti- anomaly in stream sediment geochemistry using of stepwise factor analysis and multifractal model in Delijan district, Iran
(University of Tehran, 2016-06-01)In this study, 115 samples taken from the stream sediments were analyzed for concentrations of As, Co, Cr, Cu, Ni, Pb, W, Zn, Au, Ba, Fe, Mn, Sr, Ti, U, V and Zr. In order to outline mineralization-derived stream sediments, ...
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Estimation of the Ampere Consumption of Dimension Stone Sawing Machine Using of Artificial Neural Networks
(University of Tehran, 2016-06-01)Nowadays, estimating the ampere consumption and achieve to the optimum condition from the perspective of energy consumption is one of the most important steps to reduce the production costs. In this research it is tried ...
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A real-time approach toward the chemical quality control of rock material (Case study: Gravel mines in Semnan, Iran
(University of Tehran, 2016-06-01)The quality of concrete is highly dependent on the characteristics of its aggregate, such as the size, minerals, and their chemical properties. Even a small amount of impurities, such as hydrated sulfates, chlorine (salt), ...
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Application of gravity separators for enrichment of South Chah-Palang tungsten ore
(University of Tehran, 2016-06-01)In the present study, the possibility of concentrating tungsten-copper vein ore in South Chah-Palang was examined using gravity separators including Jig Machine (-2360+600 μm), shaking table (-600+120 μm), and multi-gravity ...
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Application of fractal modeling and PCA method for hydrothermal alteration mapping in the Saveh area (Central Iran) based on ASTER multispectral data
(University of Tehran, 2016-06-01)The aim of this study is determination and separation of alteration zones using Concentration-Area (C-A) fractal model based on remote sensing data which has been extracted from Advanced Spaceborne Thermal Emission and ...
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Geological Hazards analysis in Urban Tunneling by EPB Machine (Case study: Tehran subway line 7 tunnel)
(University of Tehran, 2016-06-01)Technological progress in tunneling has led to modern and efficient tunneling methods in vast underground spaces even under inappropriate geological conditions. Identification and access to appropriate and sufficient ...
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The reclamation of mica flakes from tailing disposal using gravity separators and flotation
(University of Tehran, 2016-06-01)A sample from the small-sized tailing pile of an Iranian mica processing plant was subjected to a series of mica recovery experiments. Mineralogical and microscopic investigations indicated that the dominant mica mineral ...
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Accuracy evaluation of different statistical and geostatistical censored data imputation approaches (Case study: Sari Gunay gold deposit)
(University of Tehran, 2016-06-01)Most of the geochemical datasets include missing data with different portions and this may cause a significant problem in geostatistical modeling or multivariate analysis of the data. Therefore, it is common to impute the ...



