in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...

the purpose of this study is identifying effective factors which make customers shop online in iran and investigating the importance of discovered factors in online customers’ decision. in the identifying phase, to discover the factors affecting online shopping behavior of customers in iran, the derived reference model summarizing antecedents of online shopping proposed by change et al. was us...

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

The purpose of this study was done to explain the difference between dimensions of self-regulatory learning strategies in high-school students in different family types based on family process and content model. The research method was descriptive and post event. For this reason multistage cluster sampling was selected between second and third of 308 (186 female, 122 male) high-school students ...

In order to draw MMPI-2-RF, this paper has history-content review on formation and evolution of Minnesota Multiphasic Personality Inventory (MMPI) and MMPI-2 as well as manner of versions integration, criticizing previous versions in order to deeply survey MMPI-2-RF. Of course, this paper is not conducted to study implementation methods, scoring, and interpretation of MMPI and if MMPI validity ...

peace and national security protection and ironic solving of international conflicts become the preliminary foundation of the united nations charter and had been considered as the main responsibilities of the security council, after world war ii and the establishment of united nations organization. therefore, the security council enables to analyze every kind of conflicts and challenges which ...