نتایج جستجو برای: tailing

تعداد نتایج: 1348  

Journal: :محیط شناسی 0
حمیدرضا ناصری دانشیار، دانشکدة علوم زمین، دانشگاه شهید بهشتی تهران یعقوب نیک قوجق کارشناس ارشد هیدروژئولوژی، شرکت آب منطقه ای گلستان

agh darreh tailing dam located in 23 km north of takab, west azarbayjan province is used for disposal of mine tailings. the tailing dam and its reservoir were constructed on gypsiferous marlstones. this is emphasis on geotechnical and environmental importance of the site. although construction of dams on gypsum rocks were not yet prohibited, but the dissolution of gypsum in contact with water i...

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

This study mostly investigated the environmental impact of acid mine drainage (AMD) on the tailing of coal cleaning factory in Mazandaran province. This factory is one of the largest and the oldest in the coal concentration in Central Alborze Coal Basin. So, annually huge amounts of coal tailing will be left. The sampling of coal, coal tailing, drainage water from coal tailing, factory's waste ...

2017
G. Wang Y. Gao Y. Tang

The stability of tailing dam has an important influence on the surrounding ecological environment and the security and property of people. This article, from the micro perspective, analyzes of the water-tailing chemical interactions and process and analyzes its effects on tailing micro structure and dam stability. The experimental results show that ferrous iron in water(PH=9.5-10.3) is constant...

2015
Qiangui Zhang Guangzhi Yin Xiangyu Fan Zuoan Wei Wensong Wang Wen Nie Karen Hudson-Edwards

The failure of a tailing dam occurs due to damage to the particles’ micro-structure. Understanding the deformation characteristics of the particle’ micro-structure is important for understanding the mechanics of instability in tailing dams. In our study, a series of experiments was conducted using a testing apparatus for micro-mechanics and the deformation of tailings from the Huangcaoping tail...

2013
Tatsuhiko Hoshino Fumio Inagaki

To obtain a better understanding of metabolically active microbial communities, we tested a molecular ecological approach using poly(A) tailing of environmental 16S rRNA, followed by full-length complementary DNA (cDNA) synthesis and sequencing to eliminate potential biases caused by mismatching of polymerase chain reaction (PCR) primer sequences. The RNA pool tested was extracted from marine s...

Journal: :Water research 2014
Thérèse Sigstam Andreas Rohatschek Qingxia Zhong Moritz Brennecke Tamar Kohn

This study investigates the mechanisms underlying the deviation from Chick-Watson kinetics, namely a tailing curve, during the disinfection of viruses by chlorine dioxide (ClO2). Tailing has been previously reported, but is typically attributed to the decay in disinfectant concentration. Herein, it is shown that tailing occurs even at constant ClO2 concentrations. Four working hypothesis to exp...

Journal: :Medical physics 2010
Taly Gilat Schmidt

PURPOSE Energy-resolved CT has the potential to improve the contrast-to-noise ratio (CNR) through optimal weighting of photons detected in energy bins. In general, optimal weighting gives higher weight to the lower energy photons that contain the most contrast information. However, low-energy photons are generally most corrupted by scatter and spectrum tailing, an effect caused by the limited e...

2010
LI Wen Zhong Jian Gang

Online trust is important in both business-to-business and business-to-consumer e-business. This paper focuses on the impact of trust in online retailing (e-tailing). Based on a review of selected studies, we articulate a conceptual framework of trust in e-tailing including its antecedents, and consequences, and propose some promising future research avenues in online trust. This paper will hel...

2007
Bela Florenthal

Although a growing body of research is developing to address the different e-business practices in the electronic marketplace, e-tailing strategies have only been investigated as part of the study of general e-business strategies. However, researchers recognise that innovative and unique modes of e-tailing operations have emerged in recent years. Therefore, this paper introduces an organising f...

2016
Jie Lv Kangning Wang Chonggui Li Yuancheng Huang Xiaoliang Shi Ying Liu Ningyan Hao

Heavy metal pollutions of soil is one of the serious problems in the mining tailing areas, therefore, it is significant to estimate heavy metal of soil in the mining tailing areas. This research take Jinduicheng Mo mining tailings, Huaxian, Shaanxi Province as the study area. A total number of 288 soil samples collected at the mining tailing areas. And the heavy metal concentrations of Pb in so...

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