نتایج جستجو برای: graphyne complex

تعداد نتایج: 784004  

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم انسانی 1390

this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...

Journal: :Computational Materials Science 2021

As a novel one-dimensional full-carbon allotrope, the tensile property of α-graphyne nanotubes (α-GNTs) under different temperatures was studied with reactive molecular dynamics method. A very interesting phenomenon temperature-dependent brittle-ductile transition for carbon nanomaterials found no matter what chirality α-GNT is. The shows brittle behavior an ultimate strain ~0.2 at relatively l...

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