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.
Results
Showing 1 to 20 of 841 for “"gas emissions"”.
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The management of local greenhouse gas emissions.
… at various spatial levels to reduce greenhouse gas emissions. Most efforts at the local level are focused on the development and implementation of policies to tackle climate change but there is little research on how their progress is measured. This thesis explores the progress of UK local …
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Evaluating greenhouse gas emissions from Illinois agriculture systems
… impacts on crop yields and soil greenhouse gas (GHG) emissions. Likewise, the inclusion of cover crops (CCs) has been proposed to scavenge surplus soil N, which might lead to a decrease in the substrate needed for N2O production from the field and aqueous N losses. In chapter 2 of this …
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Lines in the landscape: greenhouse gas emissions from ditches and sediments
Contains fulltext : 333008.pdf (Publisher’s version ) (Closed access)
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Denitrification and greenhouse gas emissions from cultivated and wetland alluvial soils
… and restored forested wetlands. N2O, CH4 and CO2 emissions from restored and natural forested wetlands were measured to determine if restoration for NO3 removal will increase greenhouse gas emissions, thereby contributing to global warming and compromising the water quality benefits of …
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Historical and contemporary drivers of greenhouse gas emissions from upland soils
… on climate change by altering soil greenhouse gas (GHG) emissions. Ponding of soils can temporarily decrease soil O2 concentrations, creating conditions conducive for anaerobic biogeochemical reactions that produce and consume nitrous oxide (N2O) and carbon dioxide (CO2). In addition to the …
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The potential contribution of industrial symbiosis to greenhouse gas emissions mitigation
… to reduce specific energy demand as well as emissions. One option to reduce the overall greenhouse gas (GHG) emissions of industrial production is the use of by-products in so-called ‘industrial symbiosis’. The aim of this thesis is to estimate the potential contribution of industrial …
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Towards a legal regime for limiting ship-source greenhouse gas emissions
… Committee noted that the impact of greenhouse gas emissions from the burning of marine fuel oil on climate change is a serious concern and even though shipping is considered an environmentally friendly mode of transport, it too must change with the times and take action to reduce its own …
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Life-cycle assessment of Greenhouse Gas emissions from alternative jet fuels
… potential impact of alternative jet fuel use on emissions that contribute to global climate change. This work focused on one specific aspect in examining the feasibility of using alternative jet fuels - their life-cycle Greenhouse Gas (GHG) emissions relative to conventional jet fuel. This …
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A methodology for assessing MIT's energy used and greenhouse gas emissions
… efficiencies are maximized, fuel use and thus emissions are minimized. From fiscal year 1998 to 2003, the gas turbine efficiency, based on the higher heating value, remained approximately constant at 24%. The heat recovery steam generator effectiveness has decreased 11% from 42.1% to 37.4%. It …
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Drivers of Climate Change? Political and Economic Explanations of Greenhouse Gas Emissions
… explain historical trajectories of greenhouse gas emissions. The manuscript includes an introductory chapter and four articles that consider annual emissions in countries across the world, during the time-period 1960-2014. In these texts, Ole Martin Lægreid addresses gaps that arise when …
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Urea fertilizer placement effects on soil greenhouse gas emissions and corn growth
… for a majority of human caused greenhouse gas (GHG) production, such as N₂O and carbon dioxide (CO₂). Nitrous oxide is a potent GHG that stays in the atmosphere for at least 100 years. It is also an ozone-depleting gas. Carbon dioxide is problematic due to its abundance in the atmosphere. …
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Assessing Greenhouse Gas Emissions Mitigation Potential through the use of Forest Bioenergy
… offers opportunities to reduce greenhouse gas (GHG) emissions associated with fossil fuel use, reduce non-renewable energy consumption, and provide investment and employment in the forestry sector. These opportunities, however, must be considered within the broader contexts of forest …
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Role of microbial diversity in controlling greenhouse gas emissions from conserved forages
… 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 13.0 …
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Interactive effects of climate change and management on grassland greenhouse gas emissions
… and nitrogen (N) cycling affecting greenhouse gas (GHG) emissions and a range of other ecosystem functioning in grasslands. This will be particularly important for the sustainability of agricultural ecosystems due to its role in global food security and soil C sequestration. The interaction …
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Greenhouse gas emissions from production of Miscanthus x giganteus on a Mollisol
… crops also emit large amounts of greenhouse gases (GHGs), such as carbon dioxide (CO2) and nitrous oxide (N2O) during their production. Most crops require nitrogen (N) fertilization to maximize productivity, but the amount of N fertilizer Miscanthus x giganteus might need is currently not …
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Development of a method for estimating methane gas emissions at high resolution
… second most important anthropogenic greenhouse gas, with a radiative warming of 0.97 [0.74-1.20] W m-2 (Stocker et al., 2013a) and a global warming potential of 21 times that of CO2 over a 100 year timescale (Reay et al., 2010). Its significance to climate change is significant whereas our …
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Greenhouse Gas Emissions from Natural Gas Development in Western Canada: A Gap Analysis
The greenhouse gas (GHG) emissions of conventional and unconventional natural gas are primarily methane and carbon dioxide that are released in natural gas development activities. Addressing these emissions have gained attention because of recent climate commitments. Life Cycle Assessment (LCA) can …
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