نتایج جستجو برای: mining operation index
تعداد نتایج: 682768 فیلتر نتایج به سال:
Background & objective: Human error is one of the main causes of accidents. Due to the unreliability of the human element and the high-risk nature of demining operations, this study aimed to assess and manage human errors likely to occur in such operations. Methods: This study was performed at a demining site in war zones located in the West of Iran. After acquiring an initial familiarity ...
Promoting Total Factor Productivity (TFP) is one of the methods to improve the competitiveness in the mining sector. Even so, it is of great importance to find a practical solution for productivity improvement. In this study, value added was measured by an innovative method based on the Divisia quantity index for seven mineral activities for the period 1994-2016. The results of calculating TFP ...
Introduction: Inappropriate management of mining activities may bring about water pollution and pose a heavy complication on aquatic ecosystem and humans. The study aimed to evaluate the effect of Qorveh gold mining activities on the quality of nearby groundwater. Materials and Methods: The concentration of seven eco-toxic metals along with some general hydrochemical parameters were investigat...
The energy consumption of air-conditioning systems has gained increasing attention as it contributes significantly to the global building use. variable refrigerant flow (VRF) system is a common applied widely in residential and office buildings China. Understanding actual operation performance VRF fundamental for energy-efficient design systems. Previous research on used either limited field da...
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