now-a-days, due to the quick growth of science and technology, institutionalization of learning organizations sounds as more important among public service organizations, and that is because they should be able to offer better services to their customers in accordance with the quick changes of science and technology. one of these organizations to be emphasized upon is jahad-e-keshavarzi organiz...

abstract the syrphidae family (known as hover flies or flower flies) is one of the largest families of diptera with almost 6000 species. adult flies feed on nectar and pollen of flowers and they are crucial agent in pollinating process. the larvae of many species of syrphidae are predators of aphids and play an important role in biological control of pests. in the following faunestic investigat...

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 safavid era (1501–1736 ad) was the threshold of spreading security and welfare in the iranian society. the era provided the chance for the talented to set steps for advancement. one of the characters in the history of persian medicine who achieved successes in the shadow of the existing peace and security during the safavid empire was hakim imad al-din mahmud shirazi . while he was minister...

afghanistan throughout its history has witnessed wars and conflicts have been numerous domestic and foreign. this has resulted in the migration of residents of this country. former soviet invasion of the country and then flare-up of internal strife after the withdrawal of soviet troops, in accelerating their migration to neighboring countries, especially iran has an important role. the aim of t...