Background & Aim: Helicopter emergency medical services (HEMS) decrease the mortality rate in emergency cases by minimizing rescue time and providing advanced facilities and also medical care. The aim of this study was to determine the prehospital care in patients transported by Tehran HEMS.   Patients and Method: This retrospective cross-sectional study was conducted on the patients transpor...

Background and objectives: Rangeland suitability for livestock grazing is assessed by scoring criteria for vegetation, water resources and soil erosion. In this study, the suitability of Lar Absar rangeland in Mazandaran province for grazing domestic animals and herbivorous wildlife grazing was investigated. Many researchers have examined pasture suitability for grazing cattle, sheep, goats, an...

 Abstract Background and objective: Ecotourism in addition to creating employment and increasing income prevents the outflow of human and material capital from rural areas; which, of course, has positive and negative effects. Then, according many limitations and problems in the study area, including the lack of effective employment opportunities, high unemployment and low incomes, the study of...