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 24 for “"emission factor"”.
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Performance and Total PM Emission Factor Evaluation of Expendable Abrasives
… widely used methods of surface preparation. Air emissions from this process include particulate matter (PM) and metals. Spent abrasive generated from this process may be hazardous in nature. With increasing concern on health effects due to silica emissions from sand, use of alternative materials …
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Modal Properties and Spontaneous Emission Factor in Unstable-Resonator Semiconductor Lasers
… modes in the unstable resonator, the spontaneous emission factor, defined as the ratio of the power of the spontaneous emission entering the lasing mode to the total power of the spontaneous emission, is much larger than that of a regular Fabry-Perot cavity of the same dimension. The large …
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Direct and indirect nitrous oxide emissions from controlled release and conventional fertilizers applied to potatoes in coarse textures soil.
… quality concern, and may potentially also reduce emissions of N2O, a greenhouse gas with nearly 300 times the warming potential of carbon dioxide. However, comparisons of multiple PCUs are uncommon. Studies were conducted over three years to compare N loss (as NO3 - and N2O), yield response, and N …
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Particulate matter emissions from commercial beef cattle feedlots in Kansas
… or less (PM[subscript]10). To control PM emissions from cattle feedlots, water sprinkler systems can be implemented; however, limited data are available on their PM control efficiency. This research was conducted to determine the control efficiency of a water sprinkler system in reducing …
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Life Cycle Analysis of Greenhouse Gas Emissions from the Mining and Milling of Uranium in Saskatchewan
… study of life cycle greenhouse gas (GHG) emissions intensity during the uranium mining-milling phase of the nuclear fuel cycle for three paired uranium mine-mill operations in northern Saskatchewan (SK). The study period runs from 2006 – 2013 for two of the three pairs, and from 1995-2010 …
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The carbon footprint analysis of wastewater treatment plants and nitrous oxide emissions from full-scale biological nitrogen removal processes in Spain
… approach. Literature on greenhouse gas (GHG) emissions and LCA are reviewed and the methodology employed in the analysis is discussed. Two selected WWTPs in Madrid, Spain, i.e. La Gavia and Boadilla, are analyzed and the carbon footprints are calculated, using GaBi software by …
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Biomass burning emissions on regional-global scales
… Many recent BB studies have provided new emission factor (EF) measurements for non-methane organic compounds (NMOC), which are highly reactive and can influence secondary organic aerosol (SOA) and ozone formation. New EF should improve the input for atmospheric models along with …
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Biomass burning emissions on regional-global scales
… Many recent BB studies have provided new emission factor (EF) measurements for non-methane organic compounds (NMOC), which are highly reactive and can influence secondary organic aerosol (SOA) and ozone formation. New EF should improve the input for atmospheric models along with …
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The effect of operating conditions on emissions from a two-stage lump coal combustor
… NO<sub>x</sub>, SO<sub>x</sub>, and smoke. The emissions can be reduced by varying the burning conditions in the stove. This investigation studied the effect of various burning conditions on the emissions from a two-stage lump coal combustor burning Wyoming bituminous coal. The parameters that …
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The effects of noise in CATV distribution networks with star couplers and fiber amplifiers
… power and pump power, the gain and spontaneous emission factor are modeled for the comparison of the different systems.
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Microbial Regulation of Soil Greenhouse Gas Emissions in a Non-Bloat Legume Grazing System
… pastures are a source of greenhouse gas (GHG) emissions, including enteric methane from ruminating cattle, carbon dioxide (CO2), and nitrous oxide (N2O) from microbial respiration of soil carbon (C) and nitrogen (N). Producers may introduce non-bloat legumes to cattle pastures to improve soil N …
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Analytical and experimental analysis of fireplace performance
… carbon monoxide, and unburned hydrocarbon emissions has been fabricated and tested. Using a damper and glass pane, the design solves the problem of uncontrolled air entering the firebox. The pane reduces the inlet area and directs the flow of air towards the charcoal bed. The damper aids in …
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Emissions from combustion technologies with a focus on brick making and in-home cooking
Emissions from seventy household stoves in Tibet and Nepal and thirteen brick kilns in South Asia were measured to quantify aerosol and gaseous pollutant emissions, including particulate matter (PM 2.5), carbon monoxide (CO), carbonaceous particles, and optical scattering and absorption. In …
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Does GRID Alternatives Impact Greenhouse Gas Emissions Reduction Targets in Central Coast Climate Action Plans?
… 103 metric tons of carbon (MT CO<sub>2</sub>e) emissions reduction for the climate action plans’ <em>Energy</em> or <em>Renewable Energy</em> c<em>limate action measures</em> that pertain to solar electric installations in the cities of: Arroyo Grande, Atascadero, Paso Robles, and San Luis …
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Evaluation of Productivity, Consumption, and Uncontrolled Total Particulate Matter Emission Factors of Recyclable Abrasives
… and uncontrolled total particulate matter (TPM) emission factors (in terms of mass of pollutant emitted per unit area cleaned and mass of pollutant emitted per unit mass of abrasive consumed). Though there have been various attempts in the past to evaluate the performance of these abrasives, …
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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
… 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 future emissions for the 1990 - 2020 period.<br/><br/>3.0 Evaluation of …
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AN APPROACH TO ESTIMATE GLOBAL BIOMASS BURNING EMISSIONS OF ORGANIC AND BLACK CARBON FROM MODIS FIRE RADIATIVE POWER
… black carbon (BC), but uncertainty in aerosol emission estimates from biomass burning is still rather large. Application of satellite based measures of fire radiative power (FRP) has been demonstrated to offer an alternative approach to estimate biomass consumed with the potential to estimate …
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Characteristics of Household Solid Waste Open Burning Emissions
… typical associated with household waste fires. Emissions from these ground level burns cause local and regional air pollution, leading to adverse health effects among community residents. It is known that emissions from waste open burning can increase the risk of heart disease; aggravate …
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Constraining black carbon emission inventories with observations
… influence of BC requires estimates of its emissions over time. This dissertation improves the long-term estimation of historical BC emissions by applying observational constraints and provides more accurate and comprehensive emission information for modeling studies. This work develops a …
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Accelerated Construction of Roadways: Life Cycle Assessment and Environmental Impacts
… models currently in use to predict the emission of work-zones are mostly static emission factor models (SEFD). SEFD calculates emissions based on average operation conditions e.g. average speed and type of vehicles. Although these models produce accurate results for large scale planning …
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