نتایج جستجو برای: exposure limit

تعداد نتایج: 491019  

اسلامی, شهرام, محمدیان , محمود , رکنی, محمد, فاضلی, ابوالقاسم ,

Abstract Background and purpose: Workers' exposure to respirable silica particles especially free crystalline silica in workplace could result in some dangerous diseases such as silicosis or lung fibrosis. This study was carried out to evaluate the workers' exposure to free crystalline silica particles in some industries using the infrared spectrophotometery method. Materials and methods: I...

2001

9. REFERENCES Abu-Hilal AH, Khordagui HK. 1993. Assessment of tar pollution on the United Arab Emirates beaches. Environ Int 19:589-596. ACGIH. 1986. Documentation of the threshold limit values and biological exposure indices. American Conference of Governmental Industrial Hygienists, Cincinnati, OH. ACGIH. 1992. Threshold limit values for chemical substances and physical agents and biological ...

2014
Balachandar S Sayapathi Anselm Ting Su David Koh

BACKGROUND Development of noise-induced hearing loss is reliant on a few factors such as frequency, intensity, and duration of noise exposure. The occurrence of this occupational malady has doubled from 120 million to 250 million in a decade. Countries such as Malaysia, India, and the US have adopted 90 dBA as the permissible exposure limit. According to the US Occupational Safety and Health Ad...

Journal: :Toxicology letters 2014
Frans J Jongeneelen

Occupational exposure limits for carcinogens are increasingly based on excess lifetime risks of cancer. Acceptable limits in some countries in Europe are set at 4/1000 (=highest tolerable risk level) and 4/100,000 (=acceptable risk level) based on 40 year working exposure for the occupational population. When an exposure metric is used that is fairly new, epidemiology does not offer dose-respon...

Journal: :international journal of occupational and environment medicine 0
cs senthilkumar clinical cytogenetics laboratory, department of research, jawaharlal nehru cancer hospital and research centre (jnchrc), bhopal, madhya pradesh, india tm malla clinical cytogenetics laboratory, department of research, jawaharlal nehru cancer hospital and research centre (jnchrc), bhopal, madhya pradesh, india nk sah t. n. b college, bhagalpur university, bhagalpur, bihar, india n ganesh clinical cytogenetics laboratory, department of research, jawaharlal nehru cancer hospital and research centre (jnchrc), bhopal, madhya pradesh, india

[no abstract available]

ژورنال: Journal of Research and Health 2017

X-Ray is an ionizing electromagnetic radiation with a wide spectrum. A setting where this radiation is widely used is airport security units. This study was conducted to measure the level of momentary exposure to X-Ray in operators and personnel working in security gates of Imam Khomeini airport. In this cross-sectional study, the X-Ray machines used in security gates of Imam Khomeini airport a...

Journal: :Revista brasileira de anestesiologia 2017
Leandro Gobbo Braz José Reinaldo Cerqueira Braz Guilherme Aparecido Silva Cavalcante Kátina Meneghetti Souza Lorena Mendes de Carvalho Lucio Mariana Gobbo Braz

BACKGROUND AND OBJECTIVES Occupational exposure to waste anesthetic gases in operating room (OR) without active scavenging system has been associated with adverse health effects. Thus, this study aimed to compare the trace concentrations of the inhaled anesthetics isoflurane and sevoflurane in OR with and without central scavenging system. METHOD Waste concentrations of isoflurane and sevoflu...

Journal: :Occupational and environmental medicine 1994
M Gao L S Levy S P Faux T C Aw R A Braithwaite S S Brown

OBJECTIVES Molecular epidemiological techniques, capable of detecting damage to DNA, were used to see if such damage occurred in the lymphocytes of a group of workers exposed to chromium. The two aims of this pilot study were to see if these new techniques might make useful biological monitoring tools for workers exposed to chromium and also, to help assess whether the current occupational expo...

Introduction and purpose: Risk assessment of toxic or hazardous chemicals enables industrial hygienists to make appropriate decisions regarding management provisions in a healthy workplace. Exposure to total fumes and manganese during welding can have harmful effects on welders’ health. Therefore, the present study was conducted in the metal industry to evaluate the concentration and determine ...

Ahmadi, Vahid , Golbabaei, Farideh , Karimi, Ali , Sadeghi Yarandi, Mohsen , Sajedian, Ali Asghar ,

Introduction: 1,3-Butadiene is a carcinogenic compound that can be emitted to the atmosphere from several sources like petrochemical industry. One way to determine the level of carcinogenic and health effects of respiratory exposure to pollutants in the workplace is to use risk assessment methods. The aim of this study was to comparative assessment of carcinogenic risk of respiratory exposure t...

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