The transition-metal-catalyzed denitrogenative transannulation of pyridotriazoles represents an efficient method for the synthesis of fused nitrogen-containing heterocycles. This method is based on the ability of pyridotriazole to exist in an equilibrium with diazo-form A, which can be trapped with Rh(II) to form the reactive pyridyl carbene intermediate B, capable of reacting with terminal alk...

The aim of the study was to effect crossing dairy cows with bulls different genotypes on intake and use dietary nutrients. It has been established that leading position in consumption all types nutrients occupied by three-breed Simmental crossbreeds, which is due their higher body weight greater feed. At same time, were characterized largest nutrients, heifers — bythe smallest, castrated an int...

Exogenous tryptophan is metabolized by Pseudomonas aureofaciens to yield pyrrolnitrin [3-chloro-4-(2'-nitro-3'-chlorophenyl)-pyrrole], an antifungal agent. The ability of this culture to metabolize tryptophan analogues in a similar manner was investigated by addition of the appropriate compound to the fermentation. Tryptophan precursors and metabolites or nonphenyl-substituted tryptophans had l...

Abstract Genre-based approach has been the focus of interest in the teaching of language since the mid1980s. Genre is defined in terms of the use of language in conventionalized communicative settings. The present study made an attempt to scrutinize the effects of genre-based pedagogy on Iranian Pre-intermediate EFL leaners' reading comprehension as well as the interaction between their reading...

Abstract Genre-based approach has been the focus of interest in the teaching of language since the mid1980s. Genre is defined in terms of the use of language in conventionalized communicative settings. The present study made an attempt to scrutinize the effects of genre-based pedagogy on Iranian Pre-intermediate EFL leaners' reading comprehension as well as the interaction between their reading...

Iran-China relations are deeply rooted in history and have been enhanced recently with bilateral cooperation in the areas of energy, arms sales, trade, political cooperation and cultural ties. The objective of this paper is to analyze the role of international outsourcing in form of trading intermediate products on bilateral trade relations between Iran and China. As an empirical work, we h...