long-term exposure to high concentrations of fluoride is associated with several adverse effects on human including dental and skeletal fluorosis. we studied all the groundwater wells located in rural areas of khaf city, razavi province, northeastern iran between 2009 and 2010. fluoride concentration of water samples was measured by spadns method. we found that in rural areas the fluoride conce...

background : one way to optimize energy consumption is replacing incandescent lamp with compact fluorescent lamps .these lamps produce ultraviolet radiation due to the nature of light production. this study aimed to evaluate the ultraviolet radiation emitted from compact fluorescent lamps which are widely used in iran. methods : this study carries out on 16 compact fluorescent lamps (four diffe...

background : exposure to formaldehyde (fa) causes irritative effects and induces nasopharyngeal cancer; the interna­tional agency for research on cancer (iarc, lyon) classified fa as carcinogenic to humans, group 1. many studies have been published so far concerning the occupational exposure of industrial workers, embalmers, pathologists and anatomists to fa but very few data regarding medical ...

background: the occurrence of aflatoxin m1 (afm1) in milk, especially breast milk, is a valuable biomarker for ex-posure determination to aflatoxin b1 (afb1). in the present study, the risk of exposure to afm1 in infants fed breast milk was investigated. methods: an enzyme-linked immunosorbent assay (elisa) was used for the analysis of afm1 in breast milk samples from 132 lactating mothers refe...

exposure to vibration is the cause of some occupational injuries and diseases. objective of this study was determination of vibration exposure of tractor drivers and assessment of musculoskeletal disorder . this cross-sectional and descriptive- analytical study was administrated to 95 tractor drivers to census method and measuring induced vibration to the drivers was done in three axis, x, y, a...