Background: Since 2009, evaluation of scholarship in teaching activities of faculty members is considered for their promotion in Iran. Until now, policies regarding the minimum obligatory scholarship score required for promotion have changed dramatically. The effects of changes in policies on the scholarship activities of faculty members of Mashhad University of Medical Sciences (MUMS) are eval...

Manganese oxide catalyst promoted with sodium and supported on silica exhibits fairly good activity and selectivity towards the synthesis of ethylene from methane at the optimum operating conditions. Methane and oxygen were fed into a tubular fixed bed reactor packed with catalyst under atmospheric pressure. The effects of temperature, residence time and feed composition on conversion, selectiv...