نتایج جستجو برای: mine and trade

تعداد نتایج: 16843977  

2017
Fumikazu Yoshida Akio Hata Haruo Tonegawa

The Itai-Itai disease case is one of four major pollution-related lawsuits occurring in Japan after World War H. This paper, which is based on investigations of the pollution source, the Kamioka mine, considers (1) the history of the disturbances to the environment caused by the Kamioka mine; (2) the Itai-Itai disease suit; (3) the pollution nprevention measures and methods of the Kamioka mine ...

Journal: :journal of mining and environment 2011
v. f. navarro-torres r. n. singh

water has an important role in creating pollution problems in the mining regimes influencing the surrounding surface environment. the purpose of this study is to make an assessment of groundwater quality in an underground mine site in portugal with a view of determining the pollution potential of groundwater. in the corresponding surface area of this underground mine, intersections of fou...

Journal: :آب و خاک 0
نسترن اسماعیل پورفرد جواد گیوی علیرضا داودیان

introduction due to mining, considerable amounts of heavy metal bearing mineralsare scattered in the atmosphere in the form of dust and make the surrounding air, water and soils polluted.runoff water movingfrom the mountainstowardsplains may also transport heavy metals from mines to the soils.one type ofpollutions is contamination withheavy metals.the purpose of the present research has been to...

2013
Rahil Kazemi Talachi Mohammad Bagher Gorji

One of the most important challenges facing organizations is the increasing levels of job burnout among their employees. In the meantime, it poses the question as what the relationship between this factor and job satisfaction is. The aim of this study was to investigate the relationship between burnout and job satisfaction to provide an appropriate model. The population of this study consisted ...

One of the main concerns of an underground coal mining engineer is the safety and stability of the mine. One way that the safety and stability can be ensured is to know and understand the coal mine geology and how it reacts to the mining process. One technique that has shown a lot of success in the coal mining industry for geologic technical evaluation purposes is the coal mine roof rating (CMR...

Among non-oil exports and in trade arena, drug has always been strategic importance and most government especially industrialized countries pay special attention to its production and trade issues. Thus, having a comprehensive view from economic perspective to this section is essential for suggesting intervention. This was a descriptive-analytical and panel study. In this study, gravity model i...

شمعانیان, غلامحسین, قلی پور, محسن, مظاهری, سید احمد, رقیمی, مصطفی,

Nowadays, acid mine drainage (AMD) is one of the most important problems in coal mine contamination. The Karmozd coal mines in Mazandaran Province are one of the largest and oldest coal extractions in Central Alborze Coal Basin. The samples of coals, host rocks, mine drainages and secondary surface minerals have been collected in summer season of 2005. On the basis of hydrogeochemistry studies ...

Short-term production plans are the basis for operational mine production schedules. They concentrate on making long-term mine plans operationally feasible. Furthermore, some variables such as ore grade and tonnage govern mine production systems and cause uncertainty in the supply of raw materials to the mills. Due to the quality variation of material, short-term production optimization is an u...

2002
Rajesh Singh

This paper evaluates the two standard alternative exchange rate regimes, fixed and flexible, in a stochastic dynamic general equilibrium two-country setting. Conventional wisdom holds that countries often prefer low exchange-rate variability to stabilize trade. This may explain the observed ’fear of floating’ in emerging markets: although most of them claim to adopt a flexible system, in realit...

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