Amorphous silica nanoparticles (SiO2NPs) have been widely used in medicine including targeted drug/DNA delivery, cancer therapy, and enzyme immobilization.Nevertheless, SiO2NPs should be used with caution due to safety concerns associated with unique physical and chemical characteristics.The objective of this study was to determine the effects of S
In countries with different ethnics, local people highly seeking to control local internal affairs administration by themselves.If central power cannot, in stable conditions, guide this tendency well, and reinforce national consensus field, in instable conditions, disintegration field of the country will be provided.In historical background of our
stirrup extender western The main objective of the current research is to identify and prioritise the obstacles to using bicycle sharing systems (BSSs) in the Tehran metropolis.The methodology of this research is analytical-descriptive and it aims to achieve applied goals.To do so, firstly the obstacles are identified through studying the theoretic