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 34 for “"Greenhouse Gases (GHGs)"”.
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Processing of Thin Film Photovoltaics from Chalcogenide Nanoparticles
… revolution has incurred the emission of greenhouse gases (GHGs) into the Earth’s atmosphere, resulting in rampant pollution, global warming, ocean acidification and other disastrous environmental effects. The continued emission GHGs is a direct result of the predominant use of fossil …
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Aircraft Greenhouse Gas Emissions during the Landing and Takeoff Cycle at Bay Area Airports
… of air transit, pollutant emissions, including greenhouse gases (GHGs), are released. The goal of this study is to quantify and characterize these emissions produced from aircraft in the LTO cycle at Bay Area airports.</p> <p>FAA data was used along with the Emissions and Dispersion Modeling …
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Life cycle assessment of concrete pavements : impacts and opportunities
… This work informs the reduction of life cycle greenhouse gases (GHGs) through a three-pronged approach to: 1) comprehensively quantify GHG emissions for structures representing all primary pavement types in the US, 2) establishes a benchmark for GHG emissions from all concrete pavements in the …
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Impacts of greenhouse gases from coal power stations on climatic trends in Witbank areas, South Africa
Greenhouse gases (GHGs) from coal power station affect the behaviour of climatic parameters such as the temperature, rainfall and evaporation, over a long period of time, hence causing climatic trends. This study focused on investigating the impacts of Greenhouse gases (GHGs) from coal power …
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SUSTAINABILITY ASSESSMENT OF LARGE-SCALE CARBON CAPTURE AND SEQUESTRATION DEPLOYMENT OUTSIDE THE SYSTEM BOUNDARIES - OPPORTUNITIES AND CHALLENGES
… primarily coal and natural gas. As a result, greenhouse gases (GHGs) are generated, and they act to trap radiant heat from the Earth. When GHGs are discussed, attention is usually concentrated on carbon dioxide (CO2) because it is believed to be the most manageable anthropogenic GHG. …
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An Exploratory Scenario for San Francisco to Become A Walking, Bicycling and Transit City
<p>The effects of greenhouse gases (GHGs) on global warming and climate change have become increasingly evident, and the transportation sector is a dominant contributor to GHG emissions which responsible for 13% of the world’s total GHG emissions and more than 21% of overall energy-related …
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Impacts of inundation and season on greenhouse gas fluxes from a low-order floodplain
… changing and much of this is attributed to the greenhouse effect, which has been exacerbated by increased anthropogenic releases of greenhouse gases (GHGs). However, important GHGs, carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4), are produced naturally in the soil during the …
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A STIRPAT model of sectoral CO2 emissions at the county scale
… temperature globally is the accumulation of greenhouse gases (GHGs) in the atmosphere, with carbon dioxide (CO2) emissions from fossil fuel combustion being most important among GHGs. Objectives: To analyze the spatial correspondences between CO2 emissions and anthropogenic variables of …
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Spatial and Temporal Trends in Greenhouse Gas Fluxes from a Temperate Floodplain along a Stream-Riparian-Upland Gradient
… about potential impacts on the release of greenhouse gases (GHGs) to the atmosphere due to restored connectivity between aquatic and terrestrial ecosystems. Research has shown GHG fluxes from hydrologically active landscapes such as floodplains and wetlands vary spatially and temporally in …
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Attribution of stratospheric ozone change and associated climate impacts
… other anthropogenic and natural forcings such as greenhouse gases (GHGs) and solar variability. This thesis explores the climate impacts of stratospheric ozone depletion, and how we can attribute, with high confidence, the causes of observed changes in stratospheric ozone. First, the linkages …
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Agricultural Waste Utilization: Life Cycle Assessment for Selecting Carbon-Management Best Practices on a Global Scale
… in the field, releasing significant amounts of greenhouse gases (GHGs) and air pollutants to the atmosphere. This study aims to evaluate alternative and carbon-efficient strategies for reusing crop residues – especially focusing on rice straw and wheat straw – by conducting life cycle …
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Role of microbial diversity in controlling greenhouse gas emissions from conserved forages
… are involved in the production and reduction of greenhouse gases (GHGs), i.e., methane (CH₄) and nitrous oxide (N₂O). A laboratory study was conducted to examine the GHG production from alfalfa in the absence of oxygen (O₂). The results showed that 2.2 [mu]mol of CH₄ per g-[subscript forage] and …
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Performance and emissions characteristics of alternative biodiesel fuel on 4-stroke marine diesel engine
… Global warming concerns due to the production of greenhouse gases (GHGs) such as carbon dioxide (CO2) as results from internal combustion engine have seen as one of major factor the promotion of the use of biofuels. Therefore, the use of biodiesel fuel (BDF) as an alternative for fossil diesel …
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Biogeochemical and ecological responses to warming climate in High Arctic polar deserts
… and to emit higher amounts of the main greenhouse gases (GHGs) than previously expected. However, the mechanisms of the main GHG production are not clear. Furthermore, polar deserts are predicted to dramatically transform under rapidly warming temperatures and have uncertainty regarding …
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Aviation and climate change: a focus on Zambia’s international aviation emissions.
… is one of the fastest growing sources of greenhouse gases (GHGs) emissions and accounts for about two percent of the global GHGs emissions. This study therefore endeavoured to assess on how a low carbon aviation industry could be enhanced in Zambia. Thus the study estimated the levels of …
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Aviation and climate change: a focus on Zambia’s international aviation emissions.
… is one of the fastest growing sources of greenhouse gases (GHGs) emissions and accounts for about two percent of the global GHGs emissions. This study therefore endeavoured to assess on how a low carbon aviation industry could be enhanced in Zambia. Thus the study estimated the levels of …
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Quantificação de carbono e emissões de gases de efeito estufa sob diferentes tratamento do solo no cerrado brasileiro
… there is a global concern with the increase of greenhouse gases (GHGs) in the atmosphere due to its role in the rapid changes in energy balance. Practice change of land use are becoming more frequent, which may make it possible to increase or decrease in emissions of GHGs to the atmosphere. …
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Spatial and temporal variation In greenhouse gas flux as affected by mowing on grasslands of hummocky terrain In Saskatchewan
… change has been linked to the increase in greenhouse gas (GHG) emissions. Mixedgrass Prairie of hummocky terrain in Saskatchewan is an understudied landscape contributing an unknown quantity of greenhouse gases (GHGs) to global climate change. The objectives of this study were to determine …
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Pollutant swapping in constructed agricultural wetlands
… be remobilised through solubilisation or as the greenhouse gases (GHGs): methane (CH4), carbon dioxide (CO2) and nitrous oxide (N2O). Therefore this research examines the potential for agricultural wetlands to ‘swap’ local improvements in water quality, for (1) increased pollution to groundwaters …
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An integrated framework for sustainable construction processes: understanding and managing the environmental performance of construction operations
… They account for a substantial amount of Greenhouse Gases (GHGs) and other diesel emissions, such as nitrogen oxide (NOx) and particulate matter (PM). However, the efforts of contractors to reduce their construction-related air pollutant emissions remain minimal, due to (1) a lack of …
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