Application of lipases (preferentially Candida antarctica Lipase B, CALB) for melt polycondensation aliphatic polyesters by transesterification activated dicarboxylic acids with diols allows to displace toxic metal and oxide catalysts. Immobilization the enzyme enhances activity temperature range use. The possibility use enzyme-catalyzed in is studied compared results polycondensations solution...

factors influencing behavioral reaction of corn farmers to mitigate production risks in kermanshah township region constituted the main purpose followed in this descriptive-correlational study. the study population was comprised of corn farmers of kermanshah township who cultivated corn during the farming year 2009-2010 (n= 3239).a sample of 340 farmers was selected through systematic random sa...