The promoting effect of niobium in a Li/MgO catalyst for the oxidative coupling of methane (OCM) and for the oxidattve dehydrogenation of ethane (ODHE) has been studied in some detail. it has been found that a Li/Nb/MgO catalyst with 16 wt % niobium showed the highest activity for the C, production in the OCM reaction; the activity at 600 “C was ten times that of the Li/MgO catalyst at the same...

in this paper we formulate and prove some xed and common xed pointtheorems for self-mappings de ned on complete lower transversal functionalprobabilistic spaces.

“hedayat al-motealemin fi teb”, written by abobakr ebn ahmad akhaveini in the fourth century, (ah) is his only book left to the present time. from historical prospective, it is, by far, the first medicine book written in farsi. today, there are only three copies of the book kept in badlyan libraries of oxford, fateh library of istanbul and malek library of tehran. the reviews done on the three ...