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 121 for “"Gas emission"”.
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GASMAK2 model for longwall gob gas emission
… and improvement of an empirical model---GASMAK2, that describes methane control requirements for the longwalling coal in gassy areas. This is not a theoretical model; it uses an empirically determined gas emission rate as an input. The computer program divides Longwall panels into …
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USE OF GAS EMISSION BY BIOELECTROCHEMICAL APPROACHES FOR POWER-TO-X
… of industrial side-streams and CO2-rich emissions. This PhD project explored bioelectrochemical PtX pathways, focusing on Power-to-Methane (PtM) and Power-to-Protein (PtP), with the goal of improving their efficiency, cost-effectiveness, and feasibility. Both approaches were investigated …
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Essays on Agricultural Greenhouse Gas Emission Footprints: Accounting, Bias, and Trade Policy
… roughly one-third of anthropogenic greenhouse gas emissions, yet substantial uncertainty persists in measuring emissions intensities of agricultural production and the carbon footprint of international trade at the commodity-country level. These uncertainties arise from fragmented emissions …
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Physics-guided inference from gas emission data for source characterization and air pollution mapping
… involved in leak quantification via gas imaging techniques. These uncertainties are quantified through statistical analysisof Large Eddy Simulation (LES) data. Our results show that uncertainties that are due to inferring the 3D plume structure from 2D projections become smaller as …
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Public Opinion concerning the Feasibility of South Africa meeting its greenhouse gas emission targets
… of South Africa meeting its greenhouse gas emission targets. A snowball sampling method was utilized to identify suitable respondents to the survey. The survey reveals about 53% of participants believe that the feasibility of South Africa meeting its emission reduction target by 2030 is …
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A comparative study of South African and Nigerian legislation relating to control of gas emission
… South Africa and Nigeria as tools for control of gas emission within the context of the universal morality of environmental protection. The study highlights the other side of industrial activities - the devastating effect on health, community and the natural environment of the release of noxious …
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Monitoring and modelling diurnal and seasonal odour and gas emission profiles for swine grower/finisher rooms
To address odour and gas problems generated by livestock facilities, air dispersion models have been used to determine reasonable science-based setback distances between the livestock operations and the neighbouring residences. However, none of the existing models consider diurnal, seasonal and …
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Detection and analysis of the causal relation between tourism and greenhouse gas emission: an empirical approach.
… to the inhabitants of our planet and greenhouse gas emissions have been identi ed as the main cause of this climate change. In order to reduce the e ects of climate change, we need to signi cantly reduce emissions of greenhouse gasses to the atmosphere. While the tourism industry clearly …
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The Influence of Urban Soil Rehabilitation on Soil Carbon Dynamics, Greenhouse Gas Emission, and Stormwater Mitigation
… to provide a carbon sink to mitigate greenhouse gas emission and climate change. However, typical urban land development practices including vegetation clearing, topsoil removal, stockpiling, compaction, grading and building result in degraded soils. In this work, we evaluated an urban soil …
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An expert-based Bayesian investigation of greenhouse gas emission reduction options for German passenger vehicles until 2030
… Bayesian approach for assessing greenhouse gas (GHG) emissions from the 2030 German new vehicle fleet and quantifying the impacts of their main drivers. A first set of expert interviews has been carried out in order to identify technologies which may help to lower car GHG emissions and to …
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A life cycle based energy and greenhouse gas emission assessment of C&D waste and container glass recycling in the City of Cape Town
… in cumulative energy demand (CED) and greenhouse gas (GHG) emissions for two waste management options: landfilling and recycling for the two materials of Construction and Demolition (C&D) rubble and container glass in the City of Cape Town (CCT) in order to determine which option has the lower …
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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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Development of deflector flat spray nozzle with mixed of water and organic citric acid for emissions trap and cooling in the kitchen hood ventilation system
… The function of kitchen hood is to remove gas, odour, heat and steam during cooking process. The main purpose of this study is to introduce mist spray (atomization) to replace the water spray system in the existing kitchen hood. In addition, this study compared the existing (conventional) …
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Hydrogen Sulfide Flux Measurements And Dispersion Modeling From Constr
… near c&d landfills, few studies have quantified emission rates of h2s. The most widely used and proven technique for measuring gas emission rates from landfills is the flux chamber method. Typically the flux chamber is a cylindrical enclosure device with a spherical top which limits the gas …
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Simulation- and Experiment-Based Setpoint Control for Heating, Ventilation, and Air-Conditioning Systems: A Single- and Multi-Objective Optimization Problem
… of electricity consumption, and 40% of carbon emission. Heating, ventilation, and air-conditioning systems (HVAC) in residential and commercial units account for 40% to 60% of energy usage. To increase energy efficiency and reduce energy usage, buildings are now better insulated, installed with …
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An investigation of carbon footprint reductions achievable in Cape Town social housing considering rebound effects
… solar water heaters (SWHs) have short greenhouse gas emission payback periods. Thus, it is believed that replacing electric geysers with SWHs will reduce a household’s carbon footprint. It is also believed that living in a well-located area close to jobs, schools, shops and public transport will …
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Predicting Climate Change in Big Bend National Park, Texas
… global climate models for several greenhouse gas emission scenarios. In this way the spatial resolution of climate change predictions is increased and maps can be produced of possible future temperature and precipitation patterns in the park.
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Infrared spectroscopy of volcanic gases at Masaya, Nicaragua
Volcanic gases carry valuable information about processes occurring at active volcanoes, and so their accurate measurement and analysis are highly desirable. Masaya is a low-lying persistently active basaltic volcano, which is renowned for strong passive gas emission unaccompanied by lava …
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