سعید سراج

Urbanization, as the second revolution in human culture, has caused a change in the interaction between humans and the environment. This transformation has caused changes in the living environment. In the new era, smartening factors in cities have led to a significant growth of all major variables of citizenship life. Based on this, the purpose of the present study is an analysis of urban intelligence in promoting urban livability in District 2 of Tehran Municipality. The research method is applied in terms of purpose and descriptive in nature. The collection of field data is based on a questionnaire. Research findings based on the Vickover model show that the level of livability of neighborhoods is very different. Saadatabad, the most livable neighborhood, is located in front of Farahzad neighborhood in unfavorable conditions. The results of correlation coefficient show a direct relationship between smart city and city livability with a correlation coefficient of 0.666. Also, the results of t-test show that among the studied components, the intelligent citizen component with a beta coefficient of 0.563 had the greatest impact on viability.

Membrane distillation, as a growing membrane technology, has gained worldwide attention over the past few decades. It is possible to desalinate seawater by using membrane distillation process. In this project, reduced graphene oxide was synthesized by a green chemical method. Then, the structure and properties of the synthesized reduced graphene oxide was evaluated by performing FTIR and FESEM analyzes. Next, the synthesized reduced graphene oxide was coated on the polyvinylidene fluoride membrane by vacuum filtration method. Then, structural and functional evaluation of the fabricated composite membrane was performed in vacuum membrane distillation process. The optimized composite membrane reached 99.99% of salt rejection and 11.8 LMH of flux.