abstract: the present thesis includes ; one preface and 11speeches , that each speech considered in different researches . the prefact part , studied grammer back ground , the first speech considered a brief description about grammatical credits . the second speech considered the different typs of sentences , from structure and meaning points of view . the third speech considered the verb es...

in this research we have studied the effect of some transition-metals (cu, ag and au) substitutions on two-electron reduction potential of flavins by application of dft method. all geometries have been optimized at blyp level of theory and “6-31+g** + lanl2dz” mixed basis set. the frequency job at the same method and basis sets has been performed to obtain gibbs free energy of compounds. it h...

this study was carried out to investigate the effects of integrative vs. instrumental motivation, learning strategy use and gender on iranian efl learners. to this end, 120 efl learners both male and female majoring in english language and literature at shiraz university participated in the study. in order to conduct this study three instruments were used: oxford quick placement test, motivatio...

Management and optimization of energy consumption has been importantly considered by policy-makers in the field of energy and environment from the perspective of energy security and environmental considerations. In this study, nondominated sorting genetic algorithm (NSGAII) was applied to determine the optimal share of fossil energy sources for energy intensive industries of Iran including The ...

Management and optimization of energy consumption has been importantly considered by policy-makers in the field of energy and environment from the perspective of energy security and environmental considerations. In this study, nondominated sorting genetic algorithm (NSGAII) was applied to determine the optimal share of fossil energy sources for energy intensive industries of Iran including The ...