Efforts have been made for surface ozone concentration measurements considering secondary reactions via actinometry. Pyro heliometry, pyranometry and spectrophotometry, idometry in Amir Abad station of Tehran city center parallel. In actinometry method consideration were to show solar radiation all different filters green, yellow, red dark by means 525 nm, 630 695 nm 721 parallel the same time ...

BACKGROUND According to national laws and world experiences; provision, maintenance, and improving citizens' health are considered to be the essential functions of municipalities as a "social institute". In order to equitably promote health conditions at urban level, particularly in marginal areas, since 2004 targeted efforts have been implemented in the municipality of Tehran metropolis. This ...

BACKGROUND Tehran is the capital of Iran with an increasing Multiple Sclerosis (MS) incidence. A retrospective population-based study was conducted to evaluate the status of MS prevalence and MS incidence trends in Tehran Province, Iran. METHODS A population-based study was conducted from 1991 to 2014 in Tehran Province, the capital city of Iran based on Iranian MS Society (IMSS) registry sys...

abstract tehran, the largest metropolis of iran, due to specific physical, demographical, social, economical and cultural situations generates larger crime rate than other cities of iran. in central business district of tehran, which sits in the area no.12, and no.11 of tehran municipality, crime occurs more than other part of the city. this paper aimed at identifying the spatial distribution o...

Vehicle exhaust is a major source of anthropogenic carbon dioxide (CO2) in metropolitan cities. Popular community mode (buses and taxies) and about 2.4 million private cars are the main emission sources of air pollution in Tehran. A case survey has conducted to measure CO2 in four popular vehicles, bus, taxi, private car and motorcycle, which moved in the city with respectively 7800, 82358, 560...

Airborne particulate matter with a diameter of 2.5 microns or less (PM2.5), as well as slightly bigger particles (PM10), arrive from the westerly direction and collect in the city centre of Tehran, the capital of Iran. The statistical characteristics and daily trend of the air quality index (AQI) in Theran were studied over an 11-year period (2002- 2012). Various statistical analyses were appli...