background and purpose: fluoride is one of the drinking water contaminants regulated by epa. this ion, in low doses in the mouth reduces tooth decay without health risk and at much higher doses causes health complications and can be toxic. the major sources of exposure to fluoride are drinking water, food, dental products, and pesticides. the biggest contributor to exposure for most people in i...

introduction: one of the common methods for scientific activity assessment is scientometrics. it has been made possible with citation databases like web of science (wos) and scopus. in this paper, we studied the scientific production rate of hamadan university of medical sciences during 11 years via scientometrics methods. methods: in a descriptive, cross-sectional study, data was collected by ...

Burn injuries are prevalent worldwide, especially in developing countries; and they are significant paediatric injuries in Iran. This study was performed to analyse the epidemiology and aetiology of paediatric burns in Hamadan province in the west part of Iran from March 2004 to March 2007. The incidence rate of child hospitalisation for burns was 33.4 per 100,000 person-years. The median age w...

This study examines the regional and sociolinguistic variation in paradigms of personal pronouns, independent dependent, Najdi dialects. The dialects are Central, Qassim, Northern. social sub-varieties Central dialect: Hamadan, Hawazin, Sedentary. data was collected using interview 25 speakers. It found that there were more variations pronoun forms than what have been reported literature. When ...