نتایج جستجو برای: copper tailing

تعداد نتایج: 84006  

Journal: :Applied Energy 2021

The tailing storage facility is the largest water sink in most mines. An incorrect management of content mine tailings can become a threat to their stability, and consequently, environmental safety. Also, reuse recycling are plausible options mining companies for reasons pertaining scarcity. Dewatering technologies tailings, desalination transport energy intensive. Proper handling supply consid...

2017
Kenneth Carling Johan Håkansson Xiangli Meng Niklas Rudholm

To finance transportation infrastructure and to address social and environmental negative externalities of road transports, several countries have recently introduced or consider a distance based tax on trucks. In competitive retail and transportation markets, such tax can be expected to lower the demand and thereby reduce CO2 emissions of road transports. However, as we show in this paper, suc...

2012
M. Li L. Liang X. Li

The static stability evaluation of tailing dam is one of the most important tasks in the mine environmental protection project. The methods for the static stability calculation were discussed in this paper, which were Swedish Circle Method, Janbu Method, Bishop Method, Finite Element Method and Strength Reduction Finite Element Method (SRFEM) with five different failure criterions considered. T...

2017
Beatriz A Osuna Conor J Howard Subheksha Kc Adam Frost David E Weinberg

Ribosomes can stall during translation due to defects in the mRNA template or translation machinery, leading to the production of incomplete proteins. The Ribosome-associated Quality control Complex (RQC) engages stalled ribosomes and targets nascent polypeptides for proteasomal degradation. However, how each RQC component contributes to this process remains unclear. Here we demonstrate that ke...

Journal: :Chemosphere 2003
J Pang G S Y Chan J Zhang J Liang M H Wong

Physiological aspects of why vetiver grass (Vetiveria zizanioides L.) can be tolerant to heavy metals and be used as an alternative method for rehabilitation of abandoned metalliferous mine wastelands have been investigated. The results showed that high proportions of lead and zinc (Pb/Zn) tailing greatly inhibited the leaf growth, dry matter accumulation, and photosynthesis of leaves, but stim...

Journal: :Protein expression and purification 2004
Tsutomu Arakawa John S Philo Kouhei Tsumoto Ryosuke Yumioka Daisuke Ejima

Acidic pH is commonly used to elute antibodies from Protein-A affinity column, although low pH may result in aggregation of the proteins. As an alternative, here arginine was tested as an eluent and compared with a more conventional eluent of citrate. Using purified monoclonal antibodies, recovery of antibodies with 0.1M citrate, pH 3.8, was less than 50% and decreased further as the pH was inc...

Journal: :Journal of environmental sciences 2007
Qing Hu Min-Na Dou Hong-Yan Qi Xiang-Ming Xie Guo-Qiang Zhuang Min Yang

This study focused on the screening of cadmium-resistant bacterial strains from Pb-Zn tailing. We investigated the diversity of microbial community inhabiting Dong-san-cha Pb-Zn tailing in Beijing, China, by polymerase chain reaction-denaturing gradient gel electrophoresis (DGGE) of 16S rRNA gene of bacterial strain, and found two dominant strains in the DGGE profile. Using special culture medi...

Journal: :Medical physics 2002
Satoshi Miyajima Kotaro Imagawa Masao Matsumoto

A method to utilize CdZnTe (CZT) detectors in diagnostic x-ray spectroscopy is described in this article. Spectral distortion due to transmission of primary x rays, the escape of cadmium- and tellurium-K fluorescent x rays, and tailing was severe in measured x-ray spectra. Therefore, correction for the distortion was performed with the stripping method using response functions. The response fun...

Journal: :Bioinformatics 2016
Parth Patel S. Deepthi Ramachandruni Atul Kakrana Mayumi Nakano Blake C. Meyers

SUMMARY We describe miTRATA, the first web-based tool for microRNA Truncation and Tailing Analysis--the analysis of 3' modifications of microRNAs including the loss or gain of nucleotides relative to the canonical sequence. miTRATA is implemented in Python (version 3) and employs parallel processing modules to enhance its scalability when analyzing multiple small RNA (sRNA) sequencing datasets....

Journal: :Journal American Society of Mining and Reclamation 1991

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