the application of ai-li alloy in aerospace and aircrafts industries have a promising future due to its lower density and a comparatible mechanical properties to the other aluminum alloys. the major problems encountered with parts made of al-li alloys, include segregation and brittleness. the presence of a precipitation free zone (pfz) and also the concentration of some elements such as k,na,o,...

پژوهشگران اخیراً پنل‌های چندلایه‌ی متشکل از الوارهای متقاطع چوبی (C‌L‌T) را به عنوان یکی مناسب‌ترین ماده‌های ساختمانی دارای کمترین اثرات منفی زیست محیطی معرفی کرده‌اند. در طرح سازه‌ی ترکیبی فولادی ـ ارائه شده پژوهش حاضر، قاب ساختمان نوع بوده و برای کف‌ها دیوارهای برشی سازه افقی قائم C‌L‌T استفاده است. جهت بررسی عملکرد سیستم ای پیشنهادی، یک ۶ طبقه با دو باربر جانبی شامل: الف) خمشی متوسط دیافراگم ...

This is a survey article for Surveys in Differential Geometry series on the subject of Li-Yau-Hamilton type differential inequalities and related monotonicity formulae.

dft calculations were used to investigate adsorptionof  f-, cl-, li+ and na+ ions on the exterior surface of mg12o12 nanocage in the gas phase and water media. the most favorite position for adsorption of the studied anions and cations are atop of mg and o atoms of mg12o12, respectively. the strongest interaction is obtained when fluoride is located atop of mg atom with the adsorption energy of...

cannabis is one of the most banned drugs in the world. cannabinoid-induced dependence or withdrawal signs are indicated by the result of complex molecular mechanisms including upstream protein kinases (pks), such as an extracellular signal regulated kinase1/2 (erk1/2) and downstream glycogen synthase kinase-3β (gsk-3β), which lead to neuronal plasticity. in this study, we examined the protectiv...