Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 137 for “"Air pollutants"”.
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Exposure to hazardous air pollutants in homes
… have found that human exposure to hazardous air pollutants (HAPs) occurs in homes; however, the depth of these assessments was limited by the extent of the analyzed data. The present Ph.D. dissertation focused on air contaminants of concern in residential buildings, the possible sources of …
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Control of Volatile Organic Compound (VOC) Air Pollutants
… exist to remove volatile organic compound (VOC) air pollutants from contaminated gas streams. As regulatory and public opinion pressures increase, companies are searching for more effective methods to control these emissions. This document is intended as a guide to help determine if existing …
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Intraurban Spatiotemporal Variability of Ambient Air Pollutants across Metropolitan St. Louis
<p>Ambient air monitoring networks have been established in the United States since the 1970s to comply with the Clean Air Act. The monitoring networks are primarily used to determine compliance but also provide substantive support to air quality management and air quality research including …
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Treatment of air pollutants emitted from corn-derived ethanol production facilities
… ethanol production facilities for emissions of air pollutants and found that these facilities can be significant sources of volatile organic compounds (VOCs), hazardous air pollutants (HAPs), and odors. The distillers dried grains with solubles (DDGS) dryer stack at ethanol production facilities …
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Emission Measurement of Air Pollutants from CNG-gasoline Bi-fuel Vehicles
… accurate emission inventory. However, the EFs of air pollutants for motor vehicles vary under different operating conditions, which will cause uncertainty in developing emission inventory. Natural gas (NG), considered as a “cleaner” fuel than gasoline, is increasingly being used to reduce …
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Potential for City Parks to Reduce Exposure to Hazardous Air Pollutants
… ethylbenzene, and xylenes (BTEX) are hazardous air pollutants commonly found in outdoor air. Several studies have explored the potential of vegetation to mitigate BTEX in outdoor air, but they are limited to a northern temperate climate and present conflicting results. To investigate this issue …
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Post-Translational Modification of Proteins via Ambient Air Pollutants and Endogenous Reactive Species
… can form via the reaction of proteins and urban air pollutants and may have implications in the increase in allergic disease seen worldwide. The reaction of proteins with ozone and nitrogen dioxide has been previously studied in controlled laboratory studies, but not extensively in urban air. In …
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SYNTHESIS OF EFFICIENT PHOTOCATALYSTS IN EXTREME TEMPERATURE CONDITIONS FOR THE DEGRADATION OF AIR POLLUTANTS.
… and a rapid recombination rate of electron-hole pairs hinder its light absorption and overall photocatalytic performance. To overcome these challenges, this study proposes an innovative design strategy for strontium titanate (STO), a material with a similar energy band gap to TiO2 but offering …
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Impact of urban form on concentration of air pollutants within street canyons at pedestrian level
… estimates published by WHO reported that in 2018 air pollution caused eight million premature deaths worldwide. The same report highlighted that outdoor air pollution was responsible for 4.2 million deaths. This implies that further efforts and mitigations are needed to reduce individuals’ …
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Technology and policy options for reducing industrial air pollutants in the Mexico City Metropolitan Area
… plays an important role in dealing with air pollution and other environmental problems faced by developing and developed societies. This research examines if technological solutions alone, such as end-of-pipe and process control technologies, can achieve substantial and sustained …
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Investigating the interaction of indoor nitric oxide and nitrogen dioxide sources with outdoor air pollutants
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
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Evaluating Columbus, Georgia, Tree Canopy Interactions with Air Pollutants Using High Spectral Imagery and Portable PM Sensors
… using unsupervised classification procedures. Air pollution removal rates from the i-Tree program were applied to this evaluation providing an estimate of the city’s tree air quality benefits. The city’s canopy overall has remained steady at 52% of the 38,143 hectares that compose the …
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Coronary Heart Disease Mortality and long-term Exposure to Ambient Particulate Air Pollutants in Elderly Nonsmoking California Residents
… <p>The health effects of long-term ambient air pollution have been studied with up to 30 years of follow-up in the AHSMOG cohort, a cohort of 6,338 nonsmoking white California adults. Monthly concentrations of ambient air pollutants [particulate matter(PMio), Ozone (O3), sulfur dioxide …
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Analysis of the Impact of Air Pollutants, PM2.5 and O3, on Life Expectancy and Quality Adjusted Life-Expectancy in Canada
… to monetary valuation in the analysis of air pollution impacts used by policy makers.
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Simulations and projections of major air pollutants over the United States and uncertainty analyses, effects of natural change and human activities
… have very important consequences on regional air quality over the contiguous United States due to their effects on atmospheric chemical and physical processes. To understand these effects, the present studies use the global climate chemistry model, CAM-Chem version 3, to systematically assess …
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An analysis of the potential effects of air pollutants emitted during coal combustion on yellow poplar and loblolly pine and influences on mycorrhizal associations of loblolly pine
… Control seedlings received charcoal-filtered air. Ozone or sulfur dioxide did not significantly affect height growth or dry weight of yellow poplar seedlings. All other treatments significantly reduced height growth and dry weight after 2 weeks of fumigation. Height growth effects of loblolly …
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Predicting Long -Term Impacts of Urbanization in the St. Louis Metropolitan Area on Regional Emissions of Air Pollutants From Residential Fuel Combustion: A Dynamic Geographic Information Systems Approach
The bottom-up approach not only extends the existing emissions modeling by including the influences of city, town, suburb, and rural boundary as well as effects of spatial distribution of household income on fuel consumptions but also provides a quick and easy way to connect urbanization with …
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