نتایج جستجو برای: metal industries

تعداد نتایج: 242103  

2003
J. McCoy

The first of these chemicals, mineral spirits, is known by a number of different names. Benzine, petroleum spirits, mineral turpentine, naphtha and painters naphtha are just a few of the synonyms of mineral spirits. This solvent is actually a mixture of a number of different hydrocarbons. It is distilled from petroleum and is composed of chemicals having generally five to seven carbons. It repr...

Journal: :Clinical orthopaedics and related research 2011
Massimo Corradi Joseph Daniel Hena Ziaee Rossella Alinovi Antonio Mutti Derek J W McMinn

BACKGROUND Metal ions released from arthroplasty devices are largely cleared in urine, leading to high exposure in renal tissues. Validated early markers of renal damage are routinely used to monitor workers in heavy metal industries, and renal risk can be quantified in these industries. It is unclear if the ion levels in patients with metal-on-metal hips are sufficient to cause renal damage. ...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2012
r. arokiadass* k. palaniradja n. alagumoorthi

metal matrix composites have been widely used in industries, especially aerospace industries, due to their excellent engineering properties. however, it is difficult to machine them because of the hardness and abrasive nature of reinforcement elements like silicon carbide particles (sicp).in the present study, an attempt has been made to investigate the influence of spindle speed (n), feed rate...

Journal: :فصلنامه علمی پژوهشی مهندسی مکانیک جامدات واحد خمینی شهر 0
mehdi chogan department of mechanical engineering, khomeinishahr branch, islamic azad university, khomeinishahr, iran mohsen loh-mosavi - department of mechanical engineering, khomeinishahr branch, islamic azad university, khomeinishahr, iran

.hot metal gas forming of tubes can be used in various industries such as automotive and aerospace industries. in this process tube is formed at elevated temperatures, by using gas instead of fluid pressure. lower required pressure and low power are its advantages in comparison to hydroforming process. in this paper, a hot metal gas bulging process of an aluminum alloy tube has been investigate...

Journal: :IJCOPI 2013
A. Gandhimathi T. Meenambal

Industrialization and urbanization taking place at faster rate in Coimbatore city. Hence the discharge rate of industry effluents and wastes are increasing at alarming rate. These effluents and wastes are being discharged randomly on soil, river, lake and road side without any treatment. They pollute productive soil, natural water system as well as ground water. Assessment of heavy metal conten...

Journal: :journal of chemical health risks 0
m. ghaedi department of chemistry, graduate student, firuz abad branch, islamic azad university, fars, iran n. mosallanejad department of chemistry, graduate student, firuz abad branch, islamic azad university, fars, iran

adsorption is a fundamental process in the physicochemical treatment of wastewaters which industries employ to reduce hazardous organic and inorganic wastes in effluents. in recent years the use of low-cost adsorbents has been widely investigated as a replacement for the currently costly methods of removing heavy metal ions from wastewater. it is well-known that cellulosic waste materials can b...

2012
Xiangtao Wang Yifei Guo Li Yang Meihua Han Jing Zhao Xiaoliang Cheng

Different contaminants are released to wastewater with the rapid industrialization of human society, including heavy metal ions, organics, bacteria, viruses, and so on, which are serious harmful to human health. Among all water contaminations, heavy metal ions, such as Pb2+, Cd2+, Zn2+, Ni2+ and Hg2+, have high toxic and nonbiodegradable properties, can cause severe health problems in animals a...

2008
Viroj Wiwanitkit

Heavy metal is widely used in industries and presents as a problematic environmental pollution. Some heavy metals, especially lead and mercury, are well described for their occupational and environmental intoxication whereas the other minor heavy metals are less concerned. In this article, the author will present the details of occupational and environmental minor heavy metal intoxication. This...

Journal: :Journal of environmental monitoring : JEM 2011
In-Seok Lee Won-Jin Sim Chang-Won Kim Yoon-Seok Chang Jeong-Eun Oh

The concentrations and removal efficiencies of various kinds of micropollutants were investigated and the relationships between the input sources of industrial wastewater and occurrence patterns of each micropollutant were identified at nine on-site industrial wastewater treatment plants (WWTPs). The distribution pattern of each compound varied according to the WWTP type and several micropollut...

.Hot metal gas forming of tubes can be used in various industries such as automotive and aerospace industries. In this process tube is formed at elevated temperatures, by using gas instead of fluid pressure. Lower required pressure and low power are its advantages in comparison to hydroforming process. In this paper, a hot metal gas bulging process of an aluminum alloy tube has been investigate...

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