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 1251 for “"greenhouse gas"”.
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Greenhouse gas metabolizing prokaryotes in peatlands
… processes involved in the fluxes of the greenhouse gases methane (CH4) and nitrous oxide (N2O) from peatlands. Five model peatlands with contrasting features (e.g., nitrate content, mean annual temperature, pH) were assessed. A pH-neutral fen produced CH4 in situ as well as in …
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The management of local greenhouse gas emissions.
… being taken 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 …
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Trace Greenhouse Gas Fluxes in Upland Forests
Tree stems can act as a conduit for trace greenhouse gases (GHG) produced in the soil. However, the majority of studies describing tree stem fluxes of methane (CH₄) and nitrous oxide (N₂O) have focused on wetland ecosystems. Tree stem fluxes of GHGs on free-draining soils are understudied, but they …
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Variability in greenhouse gas footprints of crop production
Contains fulltext : 230400.pdf (Publisher’s version ) (Open Access)
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Evaluating greenhouse gas emissions from Illinois agriculture systems
… their long-term 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 …
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Greenhouse gas equivalency metrics for evaluating energy technologies
… the global warming potential (GWP), compares gases based on their radiative forcing impacts over a fixed time horizon (usually 100 years). The design of the GWP, including critically the time horizon over which emissions are compared, is largely arbitrary, yet it has enormous implications for …
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Behavioural Influence on Greenhouse Gas Footprints of human Activities
Contains fulltext : 221671.pdf (Publisher’s version ) (Open Access)
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Impacts of greenhouse gas mitigation policies on agricultural land
Greenhouse gas (GHG) emissions are widely acknowledged to be responsible for much of the global warming in the past century. A number of approaches have been proposed to mitigate GHG emissions. Since the burning of fossil-based fuels is an important source of GHGs, the policies on GHG-mitigation …
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Greenhouse Gas Production and Nutrient Reductions in Denitrifying Bioreactors
… the production of nitrous oxide, a potent greenhouse gas. Results from a laboratory experiment supported the hypothesis that the addition of biochar, a charcoal-like soil amendment and novel organic carbon source in DNBR research, would increase nitrate and phosphorus removal as well as …
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Essays on Risk and Uncertainty in Greenhouse Gas Trading Markets
A large number of concepts related to carbon offset trading policy are currently being discussed such as baseline, leakage, permanence, monitoring, verification, enforcement, financial feasibility, and third party verification. Cutting across these concepts are a variety of risks and uncertainties. …
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Greenhouse gas intensity of South Africa's production and consumption : a study of the relationship between economic growth, income distribution and greenhouse gas emission in South Africa
Includes abstract. Includes bibliographical references.
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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
… if restoration for NO3 removal will increase greenhouse gas emissions, thereby contributing to global warming and compromising the water quality benefits of restoration. Low-elevation, wetland clay soils exhibited 6.3 and 2.5 times greater denitrification potential than the high-elevation …
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Historical and contemporary drivers of greenhouse gas emissions from upland soils
… can feed back 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 …
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The potential contribution of industrial symbiosis to greenhouse gas emissions mitigation
… 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 symbiosis to GHG emissions mitigation and to …
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Towards a legal regime for limiting ship-source greenhouse gas emissions
… 2006, the 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 …
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Life-cycle assessment of Greenhouse Gas emissions from alternative jet fuels
… using alternative jet fuels - their life-cycle Greenhouse Gas (GHG) emissions relative to conventional jet fuel. This involved the quantification of the overall GHG emissions of potential alternative jet fuels, from feedstock recovery and transportation, to the production, transportation and …
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A methodology for assessing MIT's energy used and greenhouse gas emissions
… 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 has been shown that the decrease in the heat recovery steam …
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