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Showing 1 to 20 of 161 for “"PM2.5"”.
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Performance of a regulatory modeling system estimating PM2.5 and PM2.5 pre-cursor species.
… of a regulatory modeling system estimating PM2.5 and PM2.5 pre-cursor species.
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Spatiotemporal variation of PM2.5 over the contiguous United States
PM2.5 is the set of airborne particulate matter (also known as aerosols) with diameter 2.5 m or smaller. Ambient concentrations of these aerosols have been shown to be highly correlated with premature mortality throughout the world. Previous studies on ground-level, in-situ PM 2.5 concentrations …
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Measurement of the cellular oxidative potential and cytotoxicity of ambient pm2.5 – an assessment of toxic pm2.5 chemical components and their sources in the midwest US
… matter (particles smaller than 2.5 µm in size or PM2.5 ) is the 4th leading risk factor for global mortality. PM2.5 has a unique toxic mechanism that utilizes both cellular antioxidants and reductants to catalyze the generation of reactive oxygen species (ROS). Excessive accumulation of ROS in the …
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IMPACTS OF TROPICAL PEAT-FOREST SMOKE: URBAN PM2.5 AND TOXICITY IMPLICATIONS
… characterizes chemical composition of urban PM2.5. Urban PM2.5 are systematically classified to smoke-dominant (SD) vs. non-SD samples. In-situ pH increases from 1.9 in non-SD PM2.5 to 2.0 and 2.7 in SD and episodic samples, respectively, demonstrating neutralizing effects of PF smoke. …
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Organic Tracer Analyses and Receptor Modeling of PM2.5 in Fairbanks, Alaska
… and 15µg/m3 for an annual average of ambient PM2.5 to improve the quality of air and reduce occurrences of respiratory illness resulting from exposure to high levels of PM2.5. Fairbanks, the largest city in the interior of Alaska, experiences harsh winters with prolonged temperature inversions …
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Organic Tracer Analyses and Receptor Modeling of PM2.5 in Fairbanks, Alaska
… and 15µg/m3 for an annual average of ambient PM2.5 to improve the quality of air and reduce occurrences of respiratory illness resulting from exposure to high levels of PM2.5. Fairbanks, the largest city in the interior of Alaska, experiences harsh winters with prolonged temperature inversions …
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Qualitative and quantitative assessment of UCM in PM2.5 of Bakersfield, CA.
Fine particulate matter (PM ₂.₅ ) was collected in Bakersfield, CA during the CalNex 2010 field experiment and was analyzed for primary organics using a gas chromatograph – mass spectrometer (GC-MS). Substantial presence of unresolved complex mixture (UCM) was observed in the collected PM ₂.₅ . To …
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Evaluation of PM2.5 oxidative potential (OP) as a proxy for aerosol toxicity
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-08-01
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Time Series Analysis of Fine Particulates Matter (PM2.5) in Chaoyang District of Beijing
… Beijing. We calculated the 24-hour and annual PM2.5 concentrations under EPA method and using the Box-Jenkins method to build a SARIMA model (Seasonal Autoregressive Integrated Moving Average). The results showed the PM2.5 concentration decreased from 2010 to 2012. The 24-hour PM2.5 …
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Controlling PM2.5 in Chengdu: Analysis and Recommendations from the China, U.S. and California Experience
… has developed a series of policies to reduce PM2.5 emissions and to reform energy structure. However, problems exist which may prevent effectively implementation of the PM2.5 policies, include poor PM2.5 monitoring, isolated environmental management, lack of health improvement target, unclear …
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Measuring Change in PM2.5 Emissions as Nextgen Operational Procedures are Implemented at Large U.S. Airports
The aviation industry is a contributing source of particulate matter (PM), a pollutant known to negatively impact human health. The NextGen program has a focus on reducing aviation fuel burn. Since PM is a direct byproduct of jet fuel combustion, this study evaluated whether the operational …
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The impacts and management of outdoor-sourced PM2.5 in New Delhi's buildings : a simulation approach
… is noted for extremely high levels of ambient PM2.5, caused by a pattern of rapid urbanization and economic growth. As a large proportion of Indian buildings employ natural- or mixed-mode ventilation, and citizens in New Delhi spend up to 80% of their time indoors, the response of buildings to …
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An Evaluation of exposures to respirable particulates, environmental PM2.5, PAHs and metal compounds in Western Australia
… to Respirable Particulates, Environmental PM2.5, PAHs and Metal Compounds in The South West of Western Australia. A cross sectional study to evaluate the exposures of children (n=18), and controls (n=15) to respirable particulates PAHs and metal compounds in the South West of Australia …
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Familial variation in personal PM2.5 exposure within a rural Rwandan community pre and post clean energy intervention
Exposure to fine particulate matter (PM2.5) from solid fuel combustion is a major determinant of global morbidity and mortality. However, demographic variations in personal exposure remain uncertain across many high-risk populations. Liquefied petroleum gas (LPG) stoves have been proven to emit far …
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Monitoring Reduction Efforts for PM2.5 in Ellensburg,WA Using Community-Based Social Marketing to Examine Behavioral Change
In 2011, Ellensburg, Washington was labeled by the Washington Department of Ecology as being vulnerable for violating National Ambient Air Quality Standards for particulate pollution (PM<sub>2.5</sub>). In the Kittitas Basin, winter-time frequent air inversions and stagnant air events trap …
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A CFD Study of Pollution Dispersion in Street Canyon and Effects of Leaf Hair on PM2.5 Deposition
… the dry deposition of fine particulate matter (PM2.5). The first of these studies focuses on reproducing the pollution dispersion in a street canyon measured in a wind tunnel at Karlsruhe Institute of Technology (KIT), Germany. A simplified grid with the Large Eddy Simulations (LES) approach for …
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Characterization and source apportionment of ambient PM2.5 in Atlanta, Georgia: on-road emission, biomass burning and SOA impact
… and Source Apportionment of Ambient PM2.5 in Atlanta, Georgia: On-Road Emission, Biomass Burning and SOA Impact Bo Yan 260 Pages Directed by Drs. Armistead G. Russell and Mei Zheng Various airborne PM2.5 samples were collected in the metropolitan Atlanta and surrounding areas, which …
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