among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...

in this project, some new polyaspartimides, (pas)s, have been synthesized form michael addition reaction between new synthetic bismaleimide (bmi) and some aromatic diamines. a characteristic property of this polyaspartimides is a pendent carboxylic group, which introduced to these polymers from new bismaleimide. bismaleimides (bmi) is one of the interesting compounds, which can be self-polymeri...

monumental changes occurring on a daily basis have altered the world into a global village of expanding technology and shrinking geography in which preparing language learners for intercultural communication seems to be a sine qua non for modern language education. employing a cross-sectional design in its first phase, this study investigated the intercultural sensitivity and language proficien...

در این برنامه 229 نفر از افراد زیر 30 سال در زابل انتخاب شدند و نمونه خون جهت بررسی igg anti hav گرفته شد و جهت انجام آزمایش نمونه ها با حفظ زنجیره سرما به سازمان انتقال خون زاهدان فرستاده شد. در این بررسی از 229 نفر 117 نفر مونث (51/1 درصد) و 112 نفر مذکر (48/9 درصد) بودند. از کل جمعیت 203 نفر از نظر igg anti hav مثبت بودند (88/6 درصد) و 26 نفر igg anti hav در آنها منفی بود. فراوانی عفونت hav ...

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...