Background & Aims of the Study:  Environment health of schools described is one of the primary determinants of students’ health. Undoubtedly, physical environment has a very important role on the education efficiency of children in the schools and nobody can neglect the importance. The primary aim of this study was to evaluate conditions of environment health in scho...

The process of mullitization of kyanite concentrate was studied at different conditions of heat treatment (1400– 1600 °C and 0.5 – 3.5 hours) and particle size of raw materials (38-300 ?m). Kyanite concentrate was obtained fromore-dressing of kyanite deposits of Mishidowan-Bafgh region at 100 km northeastern part of Yazd. The results ofmicrostructure (shape, distribution and size of the grains)...

yusuf ibn mohammad ibn yusuf heravi, commonly known as “hakim yosefi” and “molana ibn yusuf”, son of mohammad yosefi, was a 10th century ah physician. it seems he was a native from khaf, khorasan which studied in mā varā al-nahr and leaved in harat. since of he fear of sorkh kolahan, he moved to india with his father. his works are important from that he poetry to facilitate medicine subjects. ...

due to increasing importance of desertification challenges and its consequences the necessity of sustainabledevelopment achievement in arid and semi-arid regions is essential in order to avoid limited sources asting, increase the efficiency of controlling, reclamation and restoration projects of natural areas. based on the iterature review, it has been recognized that combating desertification ...

qoheston is a region in the southeastern khorasan which includes kashmar, tabas, ferdos, birjand, qaen, torbate haidarie, khaf and taibad cities. this region is surrounded by sabzevar and nishaboor from north, central desert from west, sistan and kerman from south and naomid plains from east. in addition to the geographical and climatic characteristics of the region the abundance of historical ...