نتایج جستجو برای: copper tailing

تعداد نتایج: 84006  

2015
Bin Tu Li Liu Chi Xu Jixian Zhai Shengben Li Miguel A. Lopez Yuanyuan Zhao Yu Yu Vanitharani Ramachandran Guodong Ren Bin Yu Shigui Li Blake C. Meyers Beixin Mo Xuemei Chen

3' uridylation is increasingly recognized as a conserved RNA modification process associated with RNA turnover in eukaryotes. 2'-O-methylation on the 3' terminal ribose protects micro(mi)RNAs from 3' truncation and 3' uridylation in Arabidopsis. Previously, we identified HESO1 as the nucleotidyl transferase that uridylates most unmethylated miRNAs in vivo, but substantial 3' tailing of miRNAs s...

Journal: :Catalysts 2023

Copper, the essential element required for human body is well-known its profound antibacterial properties, yet salts and oxides of copper metals in mine tailings are reported to be a big burden modern era. Among other oxides, CuO, particular, known have beneficial effects on humans, while slight nanoengineering viz., surface functionalization nanometer-sized oxide shown make some paradigm shift...

2014
Lenka ANGELOVIČOVÁ Danica FAZEKAŠOVÁ

Angelovičová L., Fazekašová D. (2014): Contamination of the soil and water environment by heavy metals in the former mining area of Rudňany (Slovakia). Soil & Water Res., 9: 18–24. Contamination of soil and water environment by heavy metals in a former mining area and their effect on the soil characteristics were determined. Soil samples were collected in the village of Rudňany which is, accord...

Journal: :international journal of mining and geo-engineering 0
javad vazife mehrabani school of mining engineering, sahand university of technology, tabriz, iran seyyed ziaadin shafaei school of mining engineering, college of engineering, university of tehran, tehran, iran mohammad noaparast school of mining engineering, college of engineering, university of tehran, tehran, iran mohammad mousavi biotechnology group, chemical engineering department, tarbiat modares university, tehran, iran

in this research work, the zinc extraction was investigated, using bioleaching process from a low grade zinc concentrate which was produced from the accumulated flotation tailings. zinc content was initially upgraded to 11.97% by flotation process. bioleaching experiments were designed and carried out by a mixed culture of acidithiobacillus ferrooxidans, acidithiobacillus thiooxidans, leptospir...

Journal: :Environmental science and pollution research international 2010
Héctor Miguel Conesa Rainer Schulin Bernd Nowack

BACKGROUND, AIM, AND SCOPE Diffusive gradients in thin films (DGT) have been recognized as a suitable tool to assess in situ metal bioavailability in soils. Mine tailings have some singular characteristics such as high heavy-metal concentrations, low pH, or absence of water retention capacity that may compromise the correct application of this technique whose applicability is known to be pH dep...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1356

طیف تشدید اسپین الکترونی copper dipyridine dichloride (cpc) copper di-4-tert.-butyle-pyridine dicholoride (ctc) اندازه گیری شده است . این سیستم ها از مولکولهای زنجیری خطی با پیوند اسپین نسبتا" بزرگی بین زنجیرها تشکیل شده اند. یک بستگی زاویه ای بصورت تابعی از 4 در محل خطوط تشدید مشاهده گردید. اندازه گیری خودگیری ویژه (susceptibility) جفت شدگی اسپین ها را رد کرد ولی برای تغیر مشاهدات لازم است یک ...

2010
Yan-Ming Zhu Chao-Yang Wei Lin-Sheng Yang

This study was conducted to assess the effectiveness of phytoremediation on a tailing dam located in Shimen County, Hunan Province. Quadrat survey method was employed to investigate and sample the dominant plant species growing on the rehabilitated tailing dam. The fertilities of the soils were assessed, and concentrations of arsenic and other heavy metals in the plant and soil samples were mea...

Journal: :Journal American Society of Mining and Reclamation 2001

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