introduction public transportation system is the perfect solution to organize transportation in the city. this system reduces the demand for private car or taxi area provides economic savings. public transport will not only reduce the use of private vehicles, but it will reduce traffic and air pollution. the public transportation system of buses to be extremist as one of the most efficient publ...

An intensive observation of organic carbon (OC) and elemental carbon (EC) in PM10 and gaseous materials (SO2, CO, and O3) was conducted continuously to assess the characteristics of wintertime carbonaceous aerosols in an urban area of Beijing, China. Results showed that the averaged total carbon (TC) and PM10 concentrations in observation period are 30.2 +/- 120.4 and 172.6 +/- 198.3 microg/m3,...

Are individual preferences for skewness fixed or fungible? Using preference reversals as a case study, we find evidence that preferences remained stable as reversals disappear due to arbitrage across both market-like and non-market contexts. Todd L. Cherry, Sara Gunnarsson, & Jason F. Shogren (2003) "Are Preferences for Skewness fixed or Fungible" Economic Letters Volume 80 Issue 1 pp.113-121 [...

This study investigated 2-wheeler exposures to CO and PM10 along six standardized arterial main road stretches in Bangalore city in India during morning peak (9:00-11:00) and afternoon non-peak hours (13:00-15:00) using personal samplers. Background levels on a local street carrying no traffic and away from main roads were also monitored to determine the actual contributions of vehicular traffi...

Introduction: The aim of this study was to spatial analysis of PM10 concentrations in the ambient air of Yazd in two seasons, and the zoning by using Kriging interpolation method. Finally, different factors affecting the concentrations of PM10 are marked and standards have been investigated Material and methods: The measurement of PM10 particulates was performed by the monitoring device HAZ-...

one of the major environmental problems in large cities is air pollution. in this study, the monthly and annual changes in the average concentrations of carbon monoxide and pm10 were investigated during a five-year period (winter and fall of 1383-1387 a.h.s) in tehran. the effects of meteorological parameters on these parameters were also investigated. the study area was divided into three zone...

With rapid economic development and urbanization in China, vehicle emissions are increasingly becoming one of the major factors affecting air quality. The Central Plains Urban Agglomeration (CPUA), which has undergone a fast increase population an advantageous geographical location, was selected as study area. Vehicle estimated based on COPERT IV model this area changed greatly between 1999 201...

This paper presents PM10 fugitive dust emission factors for a range of vehicles types and examines the influence of vehicle and wake characteristics on the strength of emissions from an unpaved road. Vertical profile measurements of mass concentration of the passing plumes were carried out using a series of 3 instrumented towers. PM10 emission fluxes at each tower were calculated from knowledge...