background: although visual impairment of drivers is a very important risk factor for car accident, a few published papers have explored this issue in iran. this study aims to evaluate the visual fitness of public vehicle drivers in kerman province, southeast of iran. methods: a total of 4,003 public vehicle drivers were examined by one ophthalmologist for visual fitness in kerman province betw...

introduction: toxoplasma gondii is an obligatory intracellular protozoan with a worldwide distribution. we reported here the cerebral toxoplasmosis in an iranian hiv-positive patient. case report: a 35-year-old woman that hospitalized at golestan province, in summer 2016 because of dizziness, fever, and headache. after treatment, she showed severe pain and then paralysis symptoms. magnetic reso...

abstract aims: health, safety and environment is an integrated and convergence system and also a synergistic arrangement of human resources, facilities and equipment. this study aimed to determine the relationship of safety climate and perception of risk with the awareness level of hse management system among oil refineries employees. instrument & methods: this cross-sectional study was perform...

food safety issues are not a new issue in science, but due to the dynamic changes in the modern world it is as equally important as decades ago. the aim of the study was to address the efforts in the development of a comprehensive food safety system in serbia, and make specific recommendations regarding the improvement of epidemiological investigation capacity as a useful tool which contributes...

abandoned surface mine excavations can be a major environmental, social and/or human healthproblem for the mining industry as well as for the community living nearby. this problem is exacerbated by therapidly growing population encroaching on areas of historic mined lands. the aim of this studywas to assess thesafety status of the historic nyala mine excavation with the purpose of coming up wit...

introduction: the carry of heavy backpacks by school children may be associated with several potential health consequences. the aim of this study was to determine the percentage of body weight represented by school backpacks and other related factors. materials and methods: the cross-sectional study has been done in eight primary schools in yazd city in which a total of 783 students’ boys (217 ...

Background: Ensuring food safety and minimizing risks require coordinated efforts of various institutions. The objective of this study was to determine how Ghanaian consumers score the competence of public institutions in controlling food safety risks and the effects of this perceived score on their level of concerns about food safety risks. Methods: Totally, semi-structured questionnaire admi...

This paper is based on observations that competing retailers have the option of either agreeing in advance to transship excess inventory to each other or seeing unsatisfied customers switch to the competitor for a substitute. A transshipment game and a substitution game between competing retailers is studied. After establishing the existence and uniqueness of a pure-strategy Nash Equilibrium in...