نتایج جستجو برای: copper workers

تعداد نتایج: 195896  

Haghighat Lotfi, Hassan Rezazadeh, karim Ebrahim,

Background: Workers in different occupational positions experience significant Cu exposures, however, Cu toxicity has not been fully studied as compared to other heavy metals. In the present study, hematological and hepatic alterations have been investigated among copper mine workers. Materials and Methods: This descriptive study was conducted in a copper mine in west of Iran, on 402 copper mi...

Journal: :The Annals of occupational hygiene 2012
Tim Thompson David Freestone Agnes A Michalczyk M Leigh Ackland

OBJECTIVES Copper-based compounds have been used as agricultural fungicides for many years. Their use in Australia is escalating with increase in the scale of planting and associated pest problems. The objective of this study was to identify viticulture activities associated with high exposure to foliage sprays. It would be determined if occupational exposure of vineyard workers to copper-based...

Journal: :international journal of occupational and environment medicine 0
s kumar department of physiology, ucms & gtb hospital, delhi-110095, india f khaliq department of physiology, ucms & gtb hospital, delhi-110095, india s singh department of physiology, ucms & gtb hospital, delhi-110095, india r ahmed department of biochemistry, ucms & gtb hospital, delhi-110095, india r kumar department of biochemistry, ucms & gtb hospital, delhi-110095, india ps deshmukh department of biochemistry, ucms & gtb hospital, delhi-110095, india

background: occupational exposure to excessive level of copper results in many adverse health effects. objective: to measure pulmonary function, oxidative stress, and extent of dna damage in workers of a copper processing industry. methods: 30 men working in a copper processing industry and 30 men matched for age and socioeconomic status (comparison group) were included in this study. pulmonary...

A GHolan hoseinian M Jalali N Salajegheh

The correlation between the serum level of copper and ceruloplasmin was determined among sarcheshmeh copper workers and compared with Kerman blood bank diners samples. Serum copper was analyzed by atomic absorption spectrophotometry and ceruloplasmin was determined by a caloric enzymatic assay. The concentration of serum copper in the test group was 93+_20.4 mg/ DL which was significantly lower...

M Rezvanipour

In order to measure serum copper concentration, 163 adult males working at different units of copper plant from a total population of 671, were selected by simple random sampling. Eighty three subjects working at melting foundry, 49 in extrugen- rolling and 31 at administrative service untils. Eighty four adult male natives of Kerman and it's suburbs were randomly choosen as control group, seru...

A Gholamhoseinian Gh Mohammadi H Zahmatkesh M Nazary M Torkzadeh M Yeganeh

Introduction: Copper and zinc play a key role in oxidative reactions and in vivo studies have shown their different effects. In this study we examined the influence of exposure to copper and zinc on catalase and superoxide dismutase (SOD) activities in erythrocytes, total serum antioxidant capacity and malondiadehyde (MDA) production of copper industry workers. Methods: In the present study...

Journal: :Journal of occupational and environmental medicine 2006
Marcia L Stanton Paul K Henneberger Michael S Kent David C Deubner Kathleen Kreiss Christine R Schuler

OBJECTIVE Little is known about the risk of sensitization and chronic beryllium disease (CBD) among workers performing limited processing of copper-beryllium alloys downstream of the primary beryllium industry. In this study, we performed a cross-sectional survey of employees at three copper-beryllium alloy distribution centers. METHODS One hundred workers were invited to be tested for beryll...

2003
C. A. ELVEHJEM

Many early workers detected copper in certain plants, but attached no significance to its occurrence. Bucholz (1) and Meissner (2) in 1816 were probably the first definitely to establish the presence of copper in plant life. Sarzeau (3), in 1830, found copper in numerous plants, and since then many workers have reported the occurrence of this element, but most of them, as reviewed by Chevreul (...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان 1388

copper extraction from heap 3 low grade ore at sarchechmeh is limited due to its mixed composition (copper oxide and sulphide minerals). changing this heap to a bioheap could improve the copper recovery.

2009
Steven Rashin

Latin American labor power has decreased dramatically in the 1990’s. In spite of this phenomenon, Chilean subcontracted laborers in the copper industry organized and forced the government to increase social protection for temporary workers. What circumstances allowed for the successful unionization? I argue that the unionization of subcontracted workers is due to a change in the labor instituti...

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