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 17 of 17 for “"Atmospheric pollutants"”.
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Electrical detection of atmospheric pollutants and detergents on silicon
… represent significant challenges today. Many air pollutants consistently exceed exposure levels the World Health Organization (WHO) recommends. Establishing an extensive network of high-quality sensors capable of accurately detecting primary pollutants is essential for conducting global air …
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EXAMINATION OF PHOTOCHEMISTRY AND METEOROLOGY OF ATMOSPHERIC POLLUTANTS FROM THE NORTH CHINA PLAIN
… is comprised of a quantitative analysis of air pollutants in the North China Plain that strives to improve such uncertainties by identification of important sources and meteorological conditions for pollution through the combination of observations and models. Measurements used in this …
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O controle ambiental para a preservação de acervos com suporte em papel na concepção dos edifícios de arquivos de bibliotecas em clima tropical úmido
… humidity, ando also by the control of light and atmospheric pollutants. In tropical humid climate this kind of environmental control often requires mechanical equipments and air-conditioning, which envolves high instalation and running costs. This work brings together paper conservation and …
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Taxonomy, genesis, and parent material distribution of high- elevation forest soils in the southern Appalachians
… that may be influenced by the deposition of atmospheric pollutants. A total of 35 pedons were described, sampled, and characterized. Over 75% of the soils studied were classified in the field as either Typic or Pachic Haplumbrepts, but weakly developed spodic horizons were identified in 13 of …
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Mobile Laboratory Measurement of Black Carbon, Particulate Polycyclic Aromatic Hydrocarbons and Other Exhaust Emissions in Mexico City
… polycyclic aromatic hydrocarbons (PAHs) are two atmospheric pollutants produced by motor vehicles using carbonaceous fuels. As a part of the Mexico City Project, measurements of BC, PPAHs and many other gas- and particle-phase emissions were measured in Mexico City using a mobile laboratory …
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Evaluating Relationships between Mercury Concentrations in Air and in Spanish Moss (<em>Tillandsia Usneoides</em> L.)
… contamination to soil, water, and biota is atmospheric deposition. Therefore, comprehensive monitoring of atmospheric concentrations is important. Limitations of conventional atmospheric measurement techniques include high cost and lack of temporal or spatial integration. Bioindicators, …
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Evaluation of aged woodstove catalysts
Woodstove emission of atmospheric pollutants has been a growing concern in the last two decades, and catalytic combustors have been used in woodstoves to reduce emissions. Field tests of EPA-certified catalytic stoves have demonstrated that emission factors increase substantially after a few …
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Atmospheric dispersion modelling of particulate and gaseous pollutants affecting the trans-Manche region
… to determine large-scale and meso-scale atmospheric dispersion patterns. The research is only 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 …
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Bayesian analysis of historical functional linear models with application to air pollution forecasting
… of our method to forecast the level of daily atmospheric pollutants using meteorological information such as hourly records of temperature, humidity and wind speed from data collected by the City of Cape Town, South Africa. The forecasts provided by the proposed Bayesian two-stage model are …
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New Measurement Approaches to the Study of Secondary Organic Aerosol
Aerosol particles constitute a class of atmospheric pollutants that are detrimental to human health and influence the Earth’s climate. A significant fraction of aerosol mass is composed of organic material, produced by photochemical reactions of organic trace gases which form secondary organic …
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Development and Characterization of a Novel, Low-Cost Method for Measurement of Volatile Organic Compounds
Measurements of atmospheric pollutants are crucial for improving our understanding of atmospheric chemistry, managing air quality, and estimating exposure to compounds that have profound impacts on human health. Low cost sensors (LCS), due to order-of-magnitude reductions in power usage, …
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Assessing Regional Sources of Atmospheric Polycyclic Aromatic Hydrocarbon Pollution and Associated Human Cancer Risk
Atmospheric pollution from organic matter burning poses health risks to humans across the globe, making it crucial to assess and regulate such pollution’s sources. One class of atmospheric pollutants, toxic, carcinogenic polycyclic aromatic hydrocarbons (PAHs), are globally ubiquitous chemicals of …
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Micro-analytical methodologies for the characterization of airborne inorganic pollutants collected on unconventional substrates
… development of a methodology for the study of atmospheric particulate matter (PM) which is alternative to instrumental measurements. The methodology developed exploits the surfaces already present in the field as samplers of PM. In particular, conifer needles and building facades are employed …
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Digital Microfluidics for the Detection of Inorganic Ions in Aerosols
… which are the most abundant components of atmospheric pollutants and have a significant impact on rainfall, atmospheric visibility and human health. To accurately and quickly measure the distribution of inorganic ions in the vertical and horizontal directions of the atmosphere, a compact …
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Assessing solar radiation components over the alpine region Advanced modeling techniques for environmental and technological applications.
… natural processes, assessing the effect of atmospheric pollutants on Earth's climate, and planning technological applications converting solar energy into electric power. The main mechanisms that should be considered when estimating solar radiation are: absorption and scattering by clouds …
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Feasibility study into accurately modelling sulphur dioxide flux in the lower atmosphere
Atmospheric pollutants are of concern for both their effects on human health and on plants and crops. Since the 1960s monitoring networks have been created, linked to international protocols regulating emissions of pollutants such as sulphur and nitrogen and also to validation studies of …
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Mitigation strategies for nitrous oxide emissions based on fertilization management of irrigated crops in a mediterranean climate = Estrategias de mitigación de óxidos de nitrógeno basadas en el manejo de la fertilización en cultivos de regadío bajo clima mediterráneo
… Nowadays, there is a large interest to reduce atmospheric pollutants such as nitrous oxides from agricultural soils. However, little is known about it in soils from Mediterranean and tropical countries. This study investigates the influence of different factors on nitrous and nitric oxide (N2O …