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Investigating the impacts of retrofitted CNG vehicles on air pollutant emissions in Tehran
, Article International Journal of Environmental Research ; Volume 7, Issue 3 , 2013 , Pages 669-678 ; 17356865 (ISSN) ; Mansouri, N ; Morady, M. A ; Sharif University of Technology
2013
Abstract
The present study was conducted to investigate the impacts of retrofitted CNG vehicles on air pollutant emissions in Tehran over a 20 years period using available statistical data, precise automobile tests, data analysis, and LEAP Software. The obtained results revealed an increase in air pollutant emissions including CO (equal to 1030.77 thousand tons), NOx (equal to 1030.77 thousand tons), THC (269.02 thousand tons) and CO2 (equal to 38.43 thousand tons) resulting from utilizing retrofitted CNG vehicles within the studied period. Considering the obtained results, if the current trend of producing retrofitted CNG vehicles continues, a total cost of 435 million USD will impose on the...
The impact of short-term exposure to ambient air pollution on test scores in Iran
, Article Population and Environment ; Volume 41, Issue 3 , 2020 , Pages 253-285 ; Vesal, M ; Fatemi Ardestani, S.F ; Sharif University of Technology
Springer
2020
Abstract
Air pollution in urban centers has become a key public concern around the world. Apart from its adverse health effects, air pollution could impact less visible outcomes like cognitive performance. Standardized tests are a fixture of all education settings that are susceptible to pollution shocks because they require high cognitive function. Given that test scores are widely used as signals by parents, employers, and education institutions, pollution shocks could render tests unfair and unreliable. In this paper, we combine pollution data with test scores from a large testing institution in Iran between 2012 and 2017 to quantify the impact of short-term exposure to air pollution on test...