نتایج جستجو برای: ferrous and nonferrous industries

تعداد نتایج: 16831407  

Journal: Journal of Herbal Drugs 2013
Ashok Kumar B.S, Gopi Setty Saran Lokanath V Naveen Kumar Saleemulla Khan

Background & Aim: Singhnad Guggulu is a traditional Ayurvedic formula for detoxifying and rejuvenating the joints. The present study was to investigate the α-amylase inhibition and antioxidant activities of aqueous extract of Singhnad Guggul (AESG). Experimental: α-Amylase inhibition assay by dinitro-salicylic acid method and antioxidant activity by ferric chelating and ferrous reducing assay....

2012
Lin Sun Canhua Kang Yanlin Sun

Based on the theories of regional economics and industrial economics, the paper analyzed the development of China nonferrous metals industry, made summary of the current research on industrial competitiveness, built an evaluation index system from the four areas: scale competitiveness, market competitiveness, benefit competitiveness and export competitiveness. Then, with the tool of SPSS, the p...

Journal: :Pure and applied chemistry. Chimie pure et appliquee 1972
W Teworte

Waste water purification is shown to be an important field of environmental hygiene for non-ferrous metal industries. Hydrometallurgy becomes of greater importance for metal production and refining. Quality standards for drinking water and rivers require a minimum of some harmful impurities, e.g. metal compounds. The unit operations of hydrometallurgy technologically parallel the methods of eff...

2016
D. Barton M. Mirza J. Sturges M. Waheed

Induction heating has been employed to rapidly raise the temperature of ferrous specimens prior to testing at strain-rates > 10 s". The results show a general tendency for the ductility of a specially-processed pure iron to decrease with temperature over the range tested (20400 C). Based on the experimental data and the results of numerical simulations of the experiment, an empirical fracture m...

2014
D. F. NIŢOI D. DOBROTĂ

A Dimitrescu, D. F. Niţoi, Z. Apostolescu, Engineering and Tehnological Systems Management Faculty, Polytehnic University of Bucharest, Romania, D. Dobrotă, Engineering Faculty, University “Constantin Brâncuşi” of Târgu-Jiu, Romania Brazing is applied to the merge of the pieces which are most required, tensile strength of the solder can reach high values. By brazing there can be assembled piece...

2014
Eniko Viragh Karoly Viragh Claudia Munteanu

Materials and methods A retrospective case-control study was performed. Industry workers from a nonferrous plant and controls were monitored for an 8-year period. During this period, all workers received regular clinical examinations, which included evaluation for smoking status, occupational exposure to noxious non-ferrous metals (lead, Pb; cadmium, Cd), and cardiovascular disease (hypertensio...

Journal: :International journal of nonferrous metallurgy 2022

Although Dahongshan Copper Mine, a subsidiary of Chinalco Co., Ltd., has large production scale, it is still non-ferrous metal underground mine with low mechanization and labor efficiency due to its early production. In recent years, mines have carried out number beneficial scientific explorations practices on safety management. According their own actuality, they combined They done meticulousl...

Journal: :AJNR. American journal of neuroradiology 1990
D A Clayman M E Murakami F S Vines

Several cervical spine braces and orthoses were evaluated for their compatibility with imaging in the MR scanner. Nine such devices were investigated: EXO cervical collar, Philadelphia collar, S.O.M.I. cervical orthosis, Guilford cervical orthosis, modified Guilford cervical orthosis, PMT halo cervical orthosis, modified PMT halo cervical orthosis, Bremer halo system, and Bremer MR-compatible h...

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