Introduction Reducing environmental damage and preventing land degradation and reducing biodiversity has become a major concern for agricultural policy makers and environmentalists in recent years. Many scholars in developing countries, including Iran, have the most important reasons for the government's failure to stabilize the environment in terms of control and command and control (standard...

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...

Purpose: The aim of the current research is to write possible scenarios for the future of Iran's public libraries. Regarding the position and application of public libraries, they are considered as a communicative medium. Methodology: The effort is to offer scenarios that deal with the multiplicity and unpredictability of the future. The Two-on-Two model was used for determination of scenarios...

In recent decades, rural tourism as a complementary activity of agriculture and animal husbandry has always been a factor in improving the economic conditions of rural residents. Based on this research was conducted to identify factors affecting the empowerment of rural tourism destinations. Data collection was done by using two methods of archiving and scrolling through interviews and question...