Background: Air pollution is associated with adverse health effects in individuals with chronic obstructive pulmonary disease (COPD). It is uncertain if and how individuals with COPD differ from former smokers without airflow obstruction in their response to naturally occurring episodes of particulate air pollution. We hypothesized that episodic temperature inversions with high particulate matt...

background: carbon dioxide (co 2 ) is one of the most commonly used indicators of indoor air quality (iaq) in industrial area. the higher concentration level of co 2 and particulate matter (pm 10 ) in day care centre could affect children’s health. the objective of this study was to assess children’s health symptom, and measure the co 2 and pm 10 concentration level as iaq parameters in differe...

Adverse health effects of particulate matter <10 microm in aerodynamic diameter (PM(10)) and high temperatures are well known, but the extent of their interaction on mortality is less clear. This paper describes effect modification of temperature in the PM(10)-mortality association and tests the hypothesis that higher PM(10) effects in summer are due to enhanced exposure to particles. All death...

Well-documented air pollution episodes throughout recent history have led to deaths among individuals with cardiovascular and respiratory disease. Although the components of air pollution that cause the adverse health effects in these individuals are unknown, a small proportion by mass but a large proportion by number of the ambient air particles are ultrafine, i.e., less than 100 nm in diamete...

Ambient particulate air pollution assessed as outdoor concentrations of particulate matter less than or equal to 2.5 micro m in diameter (PM(2.5)) in urban background has been associated with cardiovascular diseases at the population level. However, the significance of individual exposure and the involved mechanisms remain uncertain. We measured personal PM(2.5) and carbon black exposure in 50 ...

OBJECTIVES Numerous studies have revealed the adverse health effects of acute and chronic exposure to particulate matter less than 10 μm in aerodynamic diameter (PM10). The aim of the present study was to examine the spatial distribution of PM10 concentrations and cardiovascular mortality and to investigate the spatial correlation between PM10 and cardiovascular mortality using spatial scan sta...

OBJECTIVE To analyze the association between daily mortality from different causes and acute exposure to particulate matter less than 10 microns in aerodynamic diameter (PM10), in Bogota, Colombia. MATERIALS AND METHODS A time-series ecological study was conducted from 1998 to 2006. The association between mortality (due to different causes) and exposure was analyzed using single and distribu...

DNA methylation is a potential pathway linking air pollution to disease. Studies indicate that psychological functioning modifies the association between pollution and morbidity. The authors estimated the association of DNA methylation with ambient particulate matter less than 2.5 µm in diameter (PM(2.5)) and black carbon, using mixed models. DNA methylation of the inducible nitric oxide syntha...

In this study, we combined state-of-the-art data analysis techniques (machine learning [ML] methods) and from low-cost particulate matter (PM) sensors (LCSs) to improve the accuracy of LCS-measured PM2.5 (PM with aerodynamic diameter less than 2.5 microns) mass concentrations. We collocated nine LCSs a reference instrument for 9 months, covering all local seasons, in Bengaluru, India. Using col...