echinoids fauna are common and distributed in the lower miocene deposits of the bagher abad area, northeast isfahan, central iran.there are six echinoid taxa belonging to the echinoidea class that can be described as: clypeaster intermedius, prinocidaris sp. andspines related to: eucidaris zaemays, stylocidaris polyacantha, spatangoid sp. and prinocidaris sp. bivalves, foraminifers,bryozoans, b...

In this paper we propose a conditional logic IBC to represent iterated belief revision. We define an iterated belief revision system by strengthening the postulates proposed by Darwiche and Pearl [3]. First, following the line of Darwiche and Pearl, we modify AGM postulates to make belief revision a function of epistemic states rather than of belief sets. Then we propose a set of postulates for...

The ant species list of Iran is far from complete. So far, only 110 species belonging to 26 genera have been recorded from Iran. For this study, we collected the majority of ant material in two periods of field work in spring and summer of 2007 and 2008. In total, we checked more than 35,000 specimens, and recorded 32 species and six genera new to Iran: Dolichoderus, Myrmecina, Proformica, Pyra...

Investigation of mineralization and fluid inclusions the Lapeh-Zanak copper deposit, Central Alborz zone, Iran