in this study, a simple, rapid and selective method was developed for the determination of dexamethasone. the proposed method is based on inhibitory effect of dexamethasone on the oxidation of orange-g by bromate in sulfuric acid media. the reaction was followed spectrophotometrically at 478.5 nm (?max). under optimum experimental conditions, (72.6 ?mol l-1 of orange-g, 0.76 mol l-1 of h2so4, 0...

  In the present research, has been studied the performance of agricultural co-operative societies in Khorasan Province. The main purposes of this study were as follows: 1-Determination of the performance level of agricultural co-operatives in organizing the dispersed human resources in agriculture sector.   2- Determination of the performance level of agricultural co-operatives in meeting memb...