a series of n-substituted-2,4-thiazolidinedione derivatives (tzds) were prepared via n-alkylation of 2,4-tzd at position 3 using substituted benzyl halides. synthesized n-substituted-2,4-tzd was then substituted at position 5 with substituted aromatic aldehyde according to knoevenagel condensation method. structures of the compounds were elucidated using various spectral techniques viz. ir, 1hn...

networking and entering into official and unofficial networks is the main way for individuals to get promoted in organizations. so entering into academic networks at universities has become a challenge for people who would like to promote their academic position. in iran despite a notable increase in the women’s presence in universities, their entrance into academic networks and promoting their...

extract  in this study, position of fetus were examined in the different weeks of pregnancy and their association with fetus presentation in during labor. the study group included women who had normal condition. the aim of this study include:   1- to determine the distribution normal position of fetus before birth.   2- to determine the possibility of concurrent position of fetus in during preg...

abstract: iran passed wide range of events over her controversies history. it has great special geopolitics position, natural resources and cultural values. iran is in asia and connects asia to europe. iran as relational bridge has an important role so that it could be an important center during first and second world war for enemies' forces in spite of explicit neuter declaration from ira...