Introduction: Addiction to opioids is a serious problem and concern in any nation today.  Unfortunately, the rate of taking these drugs and addiction to them has drastically increased. This research aimed at the study of the degree of the BDNF serum level, reducing depression, stress and also studied the diminishing the craving by means of transcranial direct current stimulation (tDCS) in opioi...

Erosion caused by sand transportation in flow changing devices is a serious concern in the hydrocarbon and mineral processing industry, which entail to failure and malfunction of flow devices. In this study, computational fluid dynamics (CFD) with discrete phase models (DPM) were employed for analysis of carbon steel long radius 90-Degree elbow erosion due to the sand concentration of 2, 5 and ...

Background & Aims of the Study: Worker’s behaviors, uncontrolled job stress, psycho- social factors and non-ergonomic principles, lead to risk of musculoskeletal disorders. This rsearch was done conducted to analyze relationship these factors in an auto-parts production company in Qom province, Iran in 2015. Materials and Methods: This study was a cross-sectional one condu...

background: researchers have mentioned that safety climate may predict occupational accidents and psychological distresses in the workplace. the present study examined degree of safety climate related to occupational stress and its dimensions among workers’ isfahan steel company. methods: a self-administered anonymous was distributed to 189 workers. the survey included demographic factors, occu...

this research was performed to study the effect of murray red gum tree age (4, 6, 8 years) on the chemical components, viscosity and the cellulose degree of polymerization. the eucalyptus trees were cut at the ages of 4, 6, and 8 from hand planted forests. the contents of cellulose, hemicellulose, lignin, extractives and ash for each age were then determined. the results show that with increasi...