background: today, obesity is considered as a health problem that increases the risk of some diseases. therefore, identifying the effective factors on obesity is of great importance. shift work is one of the indicators for increased risk of obesity in society and also shift work may cause various health problems for workers in military organizations. the current study aimed to investigate the r...

copper smelting slags are hard materials. therefore,to recover their copper by flotation method, grinding should be carried out to obtain optimal particle size. copper smelting slags in the bardeskan district, with work index of 16.24 kwh/st, were grinded for 65 minutes to reach an acceptable degree of freedom for the flotation tests, with particle size of 80%, smaller than 70 μm. with this gri...

background: to reduce occupational accidents and work-related diseases as well as improving satisfaction of working conditions, assessment to identify risks and control measures are necessary. the aim of this study, applying ergonomic assessment indices relative stress index (rsi) and work ability index (wai) to assess the job groups and ability of workers. methods: this study was conducted on ...

Introduction: To reduce occupational accidents and work-related diseases as well as improving satisfaction of working conditions, Assessment to identify risks and control measures are necessary. The aim of this study, applying ergonomic assessment indices to assessed the job groups and ability of textile workers. Materials and methods: This study was conducted on 194 men employed in the Qa...

background: work clothing can limit heat exchange between humans and the environment and cause thermal strain and heat-related disorders in workers. it can thus reduce both efficiency and productivity. the purpose of this study was to examine the effects of work clothing material on physiological strain index (psi) in climatic chamber. methods: an interventional study was conducted on 18 male s...