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 15 of 15 for “"gaseous pollutants"”.
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Atmospheric dispersion modelling of particulate and gaseous pollutants affecting the trans-Manche region
… concerned with outdoor exposure to atmospheric pollutants and aims to identify pollution sources using dispersion modelling with the assistance of ground level measurements from British, French and other monitoring stations and remote sensing technology. Lagrangian Particle Dispersion (LPD) …
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Emissions and efficiencies of domestic appliances burning various fuels in South Africa
… commonly used in South Africa. Emissions of gaseous pollutants, C02 , CO, NOx and HC, and particulate pollutants, total suspended particulates (TSP) and particles less than 2.Sμrn aerodynamic diameter, were measured.
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Lichens as a biomonitoring tool for detecting heavy metal air pollution associated with industrial activities in Collie, south-western Australia
… approach to measure the heavy metal pollutants emitted from coal-fired power stations and related industries in Collie, south-western Australia, an area with concern over poor air quality. Three different approaches to lichen biomonitoring were investigated. The first explored lichen …
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Characterization of Fresh Water Microalgae from East Tennessee for Biodiesel Production
… in the environment. Biodiesel emits less gaseous pollutants than diesel. There are various sources for biodiesel but they are unable to meet the existing demands for fuel. Microalgae are a promising source for biodiesel because of its relatively faster growth rate, availability, and lipid …
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Coronary Heart Disease Mortality and long-term Exposure to Ambient Particulate Air Pollutants in Elderly Nonsmoking California Residents
… adults. Monthly concentrations of ambient air pollutants [particulate matter(PMio), Ozone (O3), sulfur dioxide (SO2), nitrogen dioxide (NO2) or particulate matter</p> <p>In the AHSMOG cohort, each increment of 10 |ig/m3 in PMio in two-pollutant models showed increased risks of fatal NMRD with …
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Colorimetric sensor arrays: development and application to art conservation
… a comprehensive review of destructive air pollutants in conservation environments and the existing methods to monitor and quantify them. This chapter serves to lay the groundwork for why low-cost, convenient colorimetric array technology is crucial. Chapter 2 optimizes the performance of …
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An Assessment of Indoor Air Quality at Two Contrasting Location and Building Ventilation Types in London
… (IAQ) suggests that the contribution of outdoor pollutants and indoor airborne particulate and gaseous pollutants may be responsible for the aggregation of a number of respiratory illnesses. Because of these possible health implications, it is important to understand the characteristics of each …
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MODEL-BASED TESTING AND EVALUATION OF SORPTION MEDIA FOR REMOVING VOLATILE ORGANIC COMPOUNDS IN INDOOR AIR
… constitute a significant class of indoor gaseous pollutants. To reduce the VOC concentration of indoor environment, an in-depth understanding of the performance of the air cleaning technologies that address VOCs is important. Although many studies have been conducted to evaluate the …
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The combined effects of ozone, sulfur dioxide and simulated acid rain on the growth of three forest tree species
… ppm) plants. These results demonstrate that gaseous pollutants in combination with simulated acid rain can have detrimental effects on growth of three forest tree species, under controlled laboratory conditions.
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Chemical composition and toxicity of emissions from burning five vegetation types of Western Australia under experimental combustion conditions
… modified combustion efficiency (MCE) and EFs for gaseous pollutants, but significantly affected the EF for PM2.5 with higher emissions from burns of moister vegetation. Increasing the air flow rate significantly increased the emissions of most pollutants. However, combustion conditions did not …
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Diesel particulate matter quantification and reduction strategies for school buses
… TSI P-Trak ultrafine particle counters. Tailpipe gaseous emissions, as well as engine parameters were measured using the Sensors SEMTECH-D system. Tests were conducted using the original school bus configuration without installed retrofit technology, a single retrofit technology and combinations …
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Never Smokers -- Are They More Sensitive to the Respiratory Health Effects of Ambient Air Pollution?
… the effect of chronic exposure to ambient air pollutants on risk of all-cause mortality among persons with COPD and/or asthma. 2) To assess the effect of chronic exposure on ambient air pollutants (PM<sub>2.5</sub> and O<sub>3</sub>) and the risk of non-cancer respiratory mortality among a new …
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Development and testing of a methodology for attributing sources of airborne pollutants to their receptors
… was used to simulate transport of airborne pollutants in Dundee. Performance of the models was evaluated using the data gathered at the monitoring station and atmospheric emission inventories. The contributions of various air pollution sources of NOx and PM10 measured at the station were …
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Particulate matter formation in spark-ignition engines
… is the correlation between PM and emissions of gaseous pollutants - hydrocarbons (HCs), oxides of nitrogen (NOx), oxides of carbon (CO and CO2) - as well as oxygen and characteristic temperatures and pressures during the engine cycle. A model of PM formation via homogeneous- and …
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Design strategies for residential ventilation systems
… on the exposure to near field sources of gaseous pollutants presented in the third part of the chapter found that these are generally higher than the estimates based on well mixed conditions used in exposure risk assessments for consumer products. This, combined with the fact that the …