introduction soil losses and erosion is one of the main causes of fertility decreasing, sedimentation in river cannels and irrigation canals, decreasing of storage capacity in dams, increasing of floods frequency, environmental pollution and it prevents from stable development. more than 70% of iran land is covered with arid and semi-arid areas. soil erosion as one of the main causes of soil de...

some areas of ramsar, a city in northern iran are among the world’s wellknown inhabited areas with highest levels of natural radiation. annual exposure levels in these areas are up to 260 mgy y‐1 and the mean exposure rate is about 10 mgy y‐1 for a population of about 2000 residents. if elevated levels of natural radiation as high as a few hundred msv per year is detrimental to health and leads...

In this study, concentrations of heavy metals in soils around a Zn-smelter in Qeshm island, Iran, are investigated. Calculated geoaccumulation index (Igeo), contamination factor (Cf), and contamination degree (Cdeg) values indicate surface soil contamination by toxic metals (As, Cd, Pb, and Zn). The results also indicate that most contaminated areas are located in the vicinity of the smelter an...

in recent years there have been many attempts to develop and market inexpensive mixtures of high protein food for the children in developing areas of the world. biological studies have shown that these foods are rich sources of protein and are every effective in combating protein malnutrition. however, practical marketing and distribution has not been very successful due to the local people's h...

Background and Objective: Stroke is the second leading cause of mortality and the third leading cause of morbidity worldwide. This study aimed to examine the spatial-temporal distribution of stroke in rural districts, Zanjan Province, Iran. Materials and Methods: This cross-sectional study was conducted at Zanjan University of Medical Sciences (ZUMS). Patients with a discharge diagnosis of str...