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 402 for “"greenhouse gases"”.
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Quantifying greenhouse gases in business supply chains
… must explore a variety of methods for reducing greenhouse gas (GHG) emissions. Whilst national governments and international organisations enact treaties and frameworks, the role of business as a driver of increasing GHG emissions is also being examined. In these circumstances the measurement of …
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Modelling greenhouse gases in a general equilibrium model
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Catalytic Transformation of Greenhouse Gases in a Membrane Reactor
… were developed for the reforming of two greenhouse gases, methane and carbon dioxide to syngas (a mixture of hydrogen and carbon monoxide). This is an endothermic, equilibrium limited reaction. To overcome the thermodynamic limitations, a commercially available porous membrane (Vycor …
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ONLINE MONITORING OF NITROGEN GREENHOUSE GASES FROM WATER RECLAMATION PLANTS
It has been reported that water reclamation plant (WRP) engaging biological nutrients removal (BNR) processes can significantly increase urban N2O emissions, where N2O is produced from both nitrification and denitrification stages as an intermediate. As a response to the governmental concern of …
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Bioproducts and environmental quality: biofuels, greenhouse gases, and water quality
Promoting bio-based products is one oft-proposed solution to reduce GHG emissions because the feedstocks capture carbon, offsetting at least partially the carbon discharges resulting from use of the products. However, several life cycle analyses point out that while biofuels may emit less life …
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Air-sea Greenhouse Gases exchange in marine ecosystems: assessment and impacts
… en el conocimiento sobre el intercambio de Gases de Efecto Invernadero (GEI), principalmente dióxido de carbono (CO2), pero también metano (CH4) y óxido nitroso (N2O), entre la atmósfera y el océano en diferentes ecosistemas marinos. La evaluación incluye el análisis de los principales …
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Quantifying biophysical and biogeochemical influence on northern high latitudes greenhouse gases dynamics
… interactions on northern high latitudes (NHLs) greenhouse gases (GHGs) emission in a terrestrial modeling framework. To achieve this objective, I extended and calibrated a land surface model, the Integrated Science Assessment Model (ISAM), to explore how the physical and chemical interactions …
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A Strategy For Reducing Emissions Of Greenhouse Gases From Personal Travel In Britain
The presence of 'greenhouse gases' in the atmosphere has a warming effect on the biosphere, making the world habitable for life. Human activities, particularly energy use and deforestation, are increasing the concentration of these gases, and in particular carbon dioxide (CO<sub>2</sub>). Many …
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Quantifying emissions of greenhouse gases from South Asia through a targeted measurement campaign
… (N20) and sulfur hexafluoride (SF6) are powerful greenhouse gases with global budgets that are well-known but regional distributions that are not adequately constrained for the purposes of mitigation and policy initiatives. Quantifying emissions using inverse approaches at the national scale …
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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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Crop residue management effects on crop production, greenhouse gases emissions, and soil quality in the Mid-Atlantic USA
… reducing the dependence on fossil-fuels and greenhouse gas emissions while simultaneously improving rural economies. Corn (Zea mays L.) stover and wheat straw (Triticum aestivum L.) residues have particular promise given these crops are widely grown and their cellulosic fractions present a …
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Denitrification, Dissimilatory Nitrate Reduction, and Methanogenesis in the Gut of Earthworms (Oligochaeta): Assessment of Greenhouse Gases and Genetic Markers
… in the earthworm gut (Lumbricidae) emit the greenhouse gas N2O as well as N2. One large species (Megascolecidae) emitted no N2O, leading to the hypothesis that large earthworms cannot emit nitrogenous gases, i.e., N2O and N2. There was no emission of the greenhouse gas CH4 reported for …
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COAL, GLOBAL WARMING, AND THE CLEAN AIR ACT
… consensus that the anthropogenic production of greenhouse gases was causing global warming. Carbon dioxide is produced in far greater quantities than other greenhouse gases. Over 80 percent of the carbon dioxide produced in the United States comes from coal-fired power plants. If global warming …
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Raman-based measurements of greenhouse activity of combustion flue gases
Gases that are capable of absorbing and emitting infrared radiation due to their molecular structure are known as infrared active gases. Infrared activity is the underlying reason for the greenhouse effect. Hence, greenhouse gases are all infrared active. The vibrational/rotational structure that …
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Missing methane: Machine learning for satellite remote sensing of methane
… on by decades of anthropogenic emission of greenhouse gases into our atmosphere. The increased abundance of greenhouse gases like carbon dioxide and methane has warmed our planet dramatically above pre-industrial levels. Rising global temperatures lead to increasingly frequent severe weather …
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The economics of investing in green buildings
… economics of green buildings. The need to reduce greenhouse gases emissions became clear. Buildings account for a large part of the greenhouse gases emissions, changing the atmosphere's composition. Climate changes will be unevenly distributed between regions; in early stages they might be …
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Direct and Indirect Greenhouse Gas Emissions from Biomass Storage: Implications for Life Cycle Assessment of Biofuels
… consumption in the United States and reduce greenhouse gas emissions. Gaps in current approaches to estimating the net greenhouse gas emissions from second-generation biofuels may lead to underestimation of the carbon intensity of these fuels. Current life cycle assessment models of biofuels …
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Modeling & learning from the design recommendations for California's Greenhouse Gas Cap-and-Trade System
… pollute in a business-as-usual manner. Emitting Greenhouse gases has a global impact, unlike pollutants that are released into soil or water. Global warming created by the Greenhouse effect, amongst other things is causing an increase in the ambient global temperature, causing glaciers to melt …
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