different types of iron oxides deposits have been identified along the khaf – dorouneh volcanic and plutonic belt in north east of iran. kuh-e-zar is one of these ore deposits known as fe- oxide gold deposit. the main purpose of this paper is to detect and discriminate the iron oxide minerals in this area based on the etm+ data. data processing has been done by envi (environment for visualizing...

this article is devoted to two theorems on tangent circles, which were discovered by the iranian geometer abu sah?l kuhi (fourth century h.). the two theorems were inspired by the book of lemmas (makhudhat) attributed to archimedes. kuh?'s original treatise is lost, but the two theorems are found in nas??r al-d? ntu?s?'s edition of the lemmas of archimedes. they then appeared in latin...

The following four species Physcomitrium pyriforme (Funariaceae), Bryum alpinum, Pohlia elongata (Bryaceae) and Fabronia pusilla (Fabroniaceae), are reported for the first time from Iran. The specimens were collected from Makhmal-kuh mountain (situated in north of Khorram-abad, Lorestan province). The voucher specimens are preserved in the Az-Zahra University herbarium, Tehran, Iran.