نتایج جستجو برای: basic metals companies

تعداد نتایج: 410608  

Journal: :Biotechnology and bioengineering 2000
W Bae W Chen A Mulchandani R K Mehra

A novel strategy using synthetic phytochelatins is described for the purpose of developing microbial agents for enhanced bioaccumulation of toxic metals. Synthetic genes encoding for several metal-chelating phytochelatin analogs (Glu-Cys)(n)Gly (EC8 (n = 8), EC11 (n = 11), and EC20 (n = 20)) were synthesized, linked to a lpp-ompA fusion gene, and displayed on the surface of E. coli. For compari...

2012
Patrick G. Quilty Graeme Wheller

QUILTY, P.G. & WHELLER, G.E., 2000 (30:vi): Heard Island and the McDonald Islands: a window into the Kerguelen Plateau. In Banks, MR & Brown, M.J. (Eds); HEARD ISLAND PAPERS. Pap. Proc. R. Soc. Tasm. 133(2): 1~12. ISSN 0080~4703. School of Earth Sciences, University of Tasmania, GPO Box 252-79, Hobart, Tasmania, Australia 7001 (PGQ); Volcanex International Pty Ltd, Suite 4,286 Macquarie St, Sou...

پایان نامه :0 1394

the aim of this thesis is an approach for assessing insurer’s solvency for iranian insurance companies. we use of economic data with both time series and cross-sectional variation, thus by using the panel data model will survey the insurer solvency.

1976
KEATING J. M. WILLIAMS

A novel electrochemical device was used to recover copper metal from an inorganic chemicals process effluent. In a sidestream pilot-plant demonstration, the copper content was continuously reduced from an average of 20 mg/l to less than 2 mg/l. The basic concepts, laboratory testing, and pilot-plant demonstration are described. General Future water-pollution regulations may require effluent con...

2011

Soils are the basic and most important resources of any people. Differences in soil’s physical and chemical properties are related to the spatial distribution of land uses. Most of these human activities generate toxic substances that are transported considerable distances away from source and become accumulated in soils, sediment, water bodies and fisheries. Urban soils are largely affected by...

Journal: :Expert Syst. Appl. 2010
Wei Cheng Ke Wang Xiuying Zhang

The problem of soil pollution by heavy metals has been receiving an increasing attention in the last few decades. Geostatistics module in ArcGIS, could not however efficiently simulate the spatial distribution of heavy metals with satisfied accuracy when the spatial autocorrelation of the study area severely destroyed by human activities. In this study, the classification and regression tree (C...

2001
Barry N. Noller Mehrdad M. Nazari

It is estimated that there are over 10,000 mining and metals companies in the world, and some 20,000 mines, processing plants and smelters. In addition, there are a host of associated organizations, including learned societies, educational establishments, service companies and manufacturers. All are driven, directly or indirectly, by the orientation and success of the extractive companies, and ...

Journal: :Cement and Concrete Research 2021

Basic Oxygen Furnace slag contains heavy metals, including vanadium, chromium and molybdenum. The leachability of these elements determines the industrial applicability slag-based building products. This study investigates post‑carbonation leaching metals from activated BOF pastes with focus on activator dosage type (sodium potassium citrate). Results reveal that high degree brownmillerite hydr...

Journal: :E3S web of conferences 2021

The article proves that the implementation of principles and use tools corporate social responsibility can increase reputation corporation its activity in world market. purpose is to substantiate determine role mining metals companies ensuring improving their substantiates low level governance practice insufficient part contribution negatively affect formation corporations. analyzes indicators ...

2014
Yoshiyuki Fukuda Radostin Danev Shoh Asano Miroslava Schaffer Florian Beck Vladan Lučic Wolfgang Baumeister

To understand synaptic function, unveiling molecular architecture of synapse is one of the important issues. TEM observation of plastic embedded specimens stained with heavy metals has fundamentally contributed to our knowledge about basic structural features of neuronal synapses. However, structural investigations of synapse at the close-to-physiological state are required for a further unders...

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