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Showing 1 to 20 of 238 for “"Ambient air"”.
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Analysis of trends in ambient air quality
Thesis: M.S., Massachusetts Institute of Technology, Sloan School of Management, 1977
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Measuring ambient air quality using low-cost sensors
Exposure to ambient air pollution increases morbidity and mortality - it is the leading environmental risk factor for the global burden of disease. Accurate and reliable air quality measurements can help identify sources of pollution, enabling mitigation strategies that lead to longer, healthier …
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Impact of Indoor Sources of Emission on Ambient Air Quality
… are crucial regarding public health and air quality concerns. Many indoor emissions stem from solvent evaporation of volatile chemical products (VCPs), a broad class of sources emerging as a significant contributor to urban air pollution as emissions from classic sources like traffic has …
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Ambient Air Pollution and the Allocation of Environmental Enforcement Effort
… in heavily polluted areas than in areas with ambient pollution concentrations closer to the nonattainment threshold.
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Heat transfer from a finned pin to the ambient air
Extensive investigations employing fins as extended surfaces have been conducted, but relatively little experimental work has been conducted with pins, no information is available on the heat transfer characteristics of a pin and annular fin combination, i.e., a finned pin. The increased surface …
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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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The Role of Ambient Air Pollution in the Occurrence of Emphysema
… deaths and other health problems associated with air pollution, and there have been significant improvements in our knowledge concerning the effects of air pollution on respiratory disease.</p> <p>Although chronic obstructive pulmonary disease (COPD) mortality has been studied extensively in the …
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Impact of Ambient Air Pollution on Survival of Renal Transplant Recipients
<p>There is increasing evidence that ambient air pollution is associated with coronary heart disease morbidity and mortality. This research has focused on the general public and less so on possible sensitive subgroups even though these may have even greater susceptibility to adverse effects of …
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Assessment of Ambient Air Particulate Matter in the New Orleans Historic District
Particulate matter in the ambient air of down-town New Orleans, LA, is not currently recorded by any government, state, or private organization. This research quantified particulate matter (PM) and its metal concentration in ambient air of the New Orleans Historic District. Both, PM10 (PM less than …
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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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Concentration profiles and mapping of ambient air quality in the Shenandoah National Park
A graphical system was developed to represent airborne air quality monitoring data. The representations developed included three—dimensional spatial mapping, percentage and frequency distributions, and altitude—based scatter diagrams. Elementary statistical analyses and correlations of the measured …
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Modification of an ambient air quality model for assessment of US naval aviation emittants.
Two programs which form part of a generalized air quality assessment model for USAF operations were obtained and analyzed. Areas of incompatibility with USN aircraft operations were identified and modified to closely approximate these operations. Data were obtained by observation of operations at a …
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Determination of Toxic Heavy Metals in Wet Deposition and Ambient Air in Columbus, GA
… cadmium and are thus categorized as 'hazardous air pollutants' by the U.S. EPA. The heavy metal pollutants that exist suspended in the air are subject to wet and dry atmospheric deposition. From the air they may be released by precipitation events or direct dry deposition unto various …
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Never Smokers -- Are They More Sensitive to the Respiratory Health Effects of Ambient Air Pollution?
… Several studies show an association between ambient particulate matter (PM) and all-cause mortality. The Adventist Health and Smog 1 (AHSMOG-1) study (N=6,338) has previously found associations between ambient air pollution and incident chronic obstructive pulmonary disease (COPD) using the …
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A study of the chemical quality of ambient air at selected intersections in the Durban Metropolis
Submitted in partial fulfilment of the requirements for the Degree of Master of Technology: Chemical Engineering, Durban Institute of Technology, Durban, South Africa, 2003.
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Application of GIS in Visualization and Assessment of Ambient Air Quality for SO2 in Lima Ohio
The deterioration of urban air quality due to industrialization or other anthropogenic reasons is of great concern because it poses serious threats to environment and human health. EPA regulates and monitors air quality to protect public health and welfare at stations located throughout USA. …
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Characterisation of a Cavity Ring-Down Spectrometer for measuring CO2, CH4, delta13CO2, and delta13CH4 in ambient air
… has been installed in Heidelberg for routine ambient air analysis and for measurements of highly concentrated CH4 samples. It has been characterised and thoroughly tested in terms of accuracy, precision, and compatibility. It was found, that for accurate results, the internal water vapour …
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Ambient air pollution monitoring, modelling and human health risks in Thulamela Municipality, Vhembe District of Limpopo Province, South Africa
Ambient air pollution is a pressing global environmental concern, with pollutants from natural and anthropogenic sources contributing to deteriorating air quality. This research investigates the impact of sulfur dioxide (SO₂), nitrogen oxides (NOₓ), carbon monoxide (CO), and particulate matter …
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