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...

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,...

BACKGROUND Particulate matter (PM) exposure leads to premature death, mainly due to respiratory and cardiovascular diseases. OBJECTIVES Identification of transcriptomic biomarkers of air pollution exposure and effect in a healthy adult population. METHODS Microarray analyses were performed in 98 healthy volunteers (48 men, 50 women). The expression of eight sex-specific candidate biomarker ...

BACKGROUND The ashes and dust resulting from the 2011 eruptions of the Puyehue volcano in Chile more than doubled monthly averages of PM10 concentrations in Montevideo, Uruguay. Few studies have taken advantage of natural experiments to assess the relationship between ambient air pollutant concentrations and birth outcomes. OBJECTIVES In this study we explored the effect of particulate matter...

BACKGROUND Particulate air pollution has been linked to heart disease and stroke, possibly resulting from enhanced coagulation and arterial thrombosis. Whether particulate air pollution exposure is related to venous thrombosis is unknown. METHODS We examined the association of exposure to particulate matter of less than 10 microm in aerodynamic diameter (PM10) with deep vein thrombosis (DVT) ...

We analyzed a national data base of air pollution and mortality for the 88 largest U.S. cities for the period 1987–1994, to estimate relative rates of mortality associated with airborne particulate matter smaller than 10 microns (PM10) and the form of the relationship between PM10 concentration and mortality. To estimate city-speciŽ c relative rates of mortality associated with PM10 , we built ...

Three naturally and six mechanically ventilated microenvironments (MEs) of a mixed use commercial building in Delhi are used to study indoor–outdoor (I/O) relationships of particulate matter ≤10μm (PM10), ≤2.5μm (PM2.5) and ≤1μm (PM1). Effect of environmental and occupancy parameters on the concentrations of PM during working and non–working hours (i.e. activity and non-activity periods, respec...

Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory disease that is correlated with environmental stress. Particulate matter ≤10 μm (PM10) is considered to be a risk factor for COPD development; however, the effects of PM10 on the protein levels in COPD remain unclear. Fifty subjects with COPD and 15 healthy controls were recruited. Gene ontology analysis of differentially ex...

UNLABELLED BACKGROUND Particulate matter (PM) is assumed to exert a major burden on public health. Most studies that address levels of PM use stationary measure systems. By contrast, only few studies measure PM concentrations under mobile conditions to analyze individual exposure situations. METHODS By combining spatial-temporal analysis with a novel vehicle-mounted sensor system, the pres...

This study was aimed at evaluating the in vitro effects of particulate matter (ranging from 2.5-10 m in an aerodynamic diameter, PM10) from an urban area on the motility of human spermatozoa. Samples of swim up selected human spermatozoa from three healthy men with normal semen parameters, according to WHO guidelines, were incubated for 4 hours with 10, 50 and 75 μg/ml of PM10. Kinetic paramete...