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 35 for “"Atmospheric Pollution"”.
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Atmospheric pollution by ozone : its effects and variability
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1965.
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Studies of Atmospheric Pollution due to Lead in the Vicinity of Urban Motorways
… of the opening and use of the interchange on atmospheric lead concentrations was studied. An equation to predict the pollution level at a reference site from two weather variables, wind speed and temperature, and traffic was derived. Also, the equations relating seven remote sites to the …
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The effects of changes in the UK energy demand and environmental legislation on atmospheric pollution and future options for further reductions in emissions
… researches and analyses three aspects of UK atmospheric pollution:-<br/><br/>1.0 Evaluation of the annual atmospheric emissions arising from fossil fuels over the 1970 - 1994 period , and identification of the reasons for changing trends over this period of time.<br/><br/>2.0 Prediction of …
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The British state and the natural environment: with special reference to the Alkali Inspectorate, circa 1860-1906
… legislation, which was enacted to control atmospheric pollution by the chemical industry. Its concern is predominately with enforcement, and the principal aim is to assess the role and effectiveness of the British State and its agencies in this respect. The major focus is a somewhat …
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Assessment of long-term air pollution impacts on soil properties in the vicinity of Arnot power station on the South African highveld
Atmospheric pollution on the South African high veld is perceived as a concern because of the combination of heavy industry and climatic features that prevail in the region. The frequent occurrence of surface inversions (80 - 90 % of days in the winter months), permits the accumulation of …
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Air quality assessment and the use of specific markers to apportion pollutants to source.
… polluting sources to both indoor and outdoor atmospheric pollution are difficult to determine, as solid and gaseous products from different combustion sources are often similar. Sometimes, however, a marker compound can be identified that is unique to a pollution source (or at least not …
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Les transports, la pollution atmosphérique et la santé : évolution de la gestion des émissions d'ozone par le gouvernement canadien.
… this study is to discuss the different types of atmospheric pollution management programs, specifically related to the problem of ozone emissions management by the federal government. Ozone pollution is of considerable concern, especially its impact on the health of the population. Transportation …
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Local variation and regional transport of tropospheric ozone over Cape Town
… in the morning as a layer of concentrated pollution, likely to be associated with photochemical pollutants such as tropospheric ozone (O3) and some of its precursors. Previous studies have identified local emission sources and meteorological conditions associated with both the air pollution …
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Commercial and informal atmospheric emissions in the Mexico City Metropolitan Area : scenario analysis and policy proposals
… with significant amounts of emissions to the atmospheric pollution problem of the Mexico City Metropolitan Area (MCMA). It is more the case for some pollutants than for others, but, in any case, policies tackling the emissions of these sectors have been very few, and of very limited effect. …
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Adsorbents as mitigators in the Transport System of Nitrogen in Soil
… for improving groundwater quality and reducing atmospheric pollution. It has been discovered that affordable adsorbents were found to be efficient, and interesting NH3removing methods have been tested to see whether they can be enhanced. Despite the threats posed by carbon and clay pollution and …
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A background investigation into the feasibility of heavy stable isotopes (87Sr/86Sr) as source tracers of early hominids
… be as a result of topography, water action and atmospheric pollution. However, in spite of such variation, it is possible to distinguish isotopically different habitats, such as riparian from slopes. Such variation will complicate the interpretation of early hominid home ranges, but does provide …
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ΜΑΘΗΜΑΤΙΚΑ ΜΟΝΤΕΛΑ ΜΕΤΑΦΟΡΑΣ ΜΑΖΑΣ ΣΤΗΝ ΑΤΜΟΣΦΑΙΡΙΚΗ ΡΥΠΑΝΣΗ
… INSTRUMENT IN STUDYING THE DYNAMIC BEHAVIOUR OF ATMOSPHERIC POLLUTION. THE ADVANTAGE OF THIS METHOD IS THE POSSIBILITY OF GIVING REALISTIC ESTIMATIONS OF POLLUTANT CONCENTRATIONS UNDER CONDITIONS OF LACK OF ANALYTIC METEOROLOGICAL DATA AND IN SITES WITH COMPLICATED METEOROLOGICAL FIELDS. THEMAIN …
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Computational Tools for Chemical Data Assimilation with CMAQ
… Protection Agency's main modeling tool for atmospheric pollution studies. CMAQ-ADJ, the adjoint model of CMAQ, offers new analysis capabilities such as receptor-oriented sensitivity analysis and chemical data assimilation. This thesis presents the construction, validation, and properties of …
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The impact of plantations of Pinus spp. on the chemical properties of soils and stream waters in South African upland catchments
… not believed to be influenced by significant atmospheric pollution. Thus, a good opportunity exists to study the effects of afforestation without the superimposed influence of acid deposition. This thesis documents the results of a regional investigation of the geochemical impact of pine …
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The large scale understanding of natural organic matter : processes and application
… transformed by food and fuel production, through atmospheric pollution and climate change. Further, land disturbance has led to considerable losses of nutrients from terrestrial ecosystems. This investigation aims to explore and address several barriers to understanding natural organic matter …
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Titania-silica composite materials for self-cleaning applications on monumental stones
Atmospheric pollution has an evidently adverse impact on the aesthetics of urban buildings and structures. Thus, the synthesis of photocatalysts capable of removing pollutants deposited on the surface of stone and other building materials is an interesting challenge to researchers. In the work …
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Investigating the performance and emission characteristics of diesel-LPG engine operation
… decades, attention has been placed on reducing atmospheric emissions globally, including the enforcement of stricter requirements which target emissions from internal combustion engines. This is not surprising considering the spate of public attention about the health impacts of atmospheric …
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Geochemical and Isotopic Characterization of Coal Combustion Residuals: Implications for Potential Environmental Impacts
… of advanced capture technologies to reduce atmospheric pollution, but do not address the transfer and storage, or the potential impacts to water resources. Thus improved air quality is traded for significant enrichments of contaminants in the solid waste and effluent discharged from power …
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