Impacts of Urban Design on Air Pollution Case Study of Tehran

, Ph.D. Dissertation Sharif University of Technology Daneshpajooh, Nooshin (Author) ; Arhami, Mohammad (Supervisor)

Abstract

This study aims to investigate the effects of urban design and development on Tehran's air quality in calm conditions. Known strategies such as bright roofs and facades, urban development, and modification of the building density are in the focus. The WRF model coupled with Single-Layer Urban Canopy and Building Effects Parametrization canopy schemes were used to predict weather parameters. SMOKE and CMAQ models computed the concentration of pollutants in the city. Urban canopy schemes had correlation coefficients and an index of accordance of about 0.9 and the mean bias was lower than 2. Wind prediction had a lower correlation. The BEP scheme reduced the mean bias for temperature and...

PM dispersion during stable winter episodes in tehran and effect of governmental emission regulations

, Article Atmospheric Pollution Research ; Volume 11, Issue 8 , 2020 , Pages 1316-1328 Daneshpajooh, N ; Arhami, M ; Azoji, H ; Sharif University of Technology

Elsevier B.V 2020

Abstract

Tehran is one of the most polluted cities in Middle East which during winter extremely high levels of particulate matter (PM) occurs due to frequent stable weather episodes. This study aims to identify major sources of PM and quantify effectiveness of possible control measures and strategies during these episodes. The Brute Force Method (BFM) with Community Multiscale Air Quality model (CMAQ) was implemented to estimate the contributions from major local anthropogenic sources on PM levels. In this regard several scenarios including the effect of existing governmental policies and regulations to upgrade vehicles emission standards were investigated. Emission due to the existing condition and...

Experimental Study of Biocompatibility and Proliferation of Stem Cells on the Scaffold with Natural Structure

, M.Sc. Thesis Sharif University of Technology Zamani, Masoud (Author) ; Vosoughi, Manouchehr (Supervisor) ; Alemzadeh, Iran (Supervisor) ; Haghighipour, Nooshin (Supervisor)

Abstract

The heart diseases and in particular coronary artery disease have been vastly increased in recent years. Bypass operation is the major recognized way of this disease treatment however, one third of patients don’t have the suitable autologous vein for this operation. It should be noted that for this operation a suitable conduit with diameter as narrow as possible is needed. On the other hand, usage of synthetic polymers won’t be suitable for this operation due to the coagulation forming. The only way to overcome this problem is the use of tissue engineering with the aid of scaffold and autologous cells with the natural tissue function, which reconstructed the desire tissue causing no...