The purpose of this study was to determine the prevalence of bovine leukemia virus (BLV) in Khorasan Razavi and Khorasan Shomali provinces which are the main provinces located in the northeast of Iran. Total number of 429 blood samples were collected from industrial dairy herds. The samples were categorized based on province, age (2-3, 4-6, and 7-10 years old), calving (≤ 2, 3-5, and > 5) and h...

abstract squamata or scaled reptiles are the largest order of new reptiles including lizards, snakes and amphisbaenia. they have formed 95 precent of new reptiles. our goal is lizard biodiversity of torbat-e heydaryeh in razavi khorasan province. the study of lizards biodiversity of torbat-e heydaryeh in razavi khorasan province was carried out in 2012 until 2013. in this research 132 specimens...

the noctuidae with more than 25,000 described species include numerous economic important crop pests worldwide. a faunistic study on this family was carried out in the years 2010 and 2011 in the khorasan-e-razavi province, ne iran. a total of 33 species of the subfamilies metoponiinae, bryophilinae and xyleninae belonging to 17 genera were collected. among the collected species, two are recorde...

abstract according to official statistics, domestic production of edible oils provides only less than 10 percent of the country's consumption needs, and therefore every year a significant amount of crude and prepared edible oils and fats is imported to the country spending a considerable amount of foreign exchange. over the past years rapeseed, as a new product, has been implemented by a limite...

High severity crashes are one of the negative consequences suburban transportation for a range factors. Fatalities, injuries, and medical costs, as well road car damage mental side effects, more important severe crashes. The goal this research is to figure out what factors contribute different crash levels, in order reduce likelihood such This study unique that it tries investigate capabilities...

1. introduction the long-term result of cooperation between environmental factors and circulation patterns determines the arrangement of type and manner in temperature heat islands in geographical areas. the knowledge about space dispersion in geographical areas provides the grounds for sound programming and proper environmental decision making. the information about time and place distribution...