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Carbon dynamics and greenhouse gas emissions in a tropical dry forest and a pre-alpine Bavarian grassland
DownloadFall 2020
The present thesis contains three studies, all of which follow the main trend of quantification and assessment of carbon dynamics and greenhouse gas emissions. The main objectives of the first study “Dynamics of carbon sequestration in tropical dry forests along two successional gradients under...
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Construction, Operation, and Performance Evaluation of a Continuous Supercritical Fluid Extraction Process for the Recovery of Hydrocarbons from Drill Cuttings
DownloadFall 2020
The primary outcome of this research is the design, construction, commissioning, and operation of a novel, pilot-scale, continuous supercritical fluid extraction (SFE) process for recovering drilling fluid hydrocarbons from drill cuttings-water slurries. Counter-current flow of slurry and...
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Spring 2023
Modern civilization has become dependent on fossil fuels as a source of energy and chemicals. As a result, the rapid industrial development and growing energy demand are pushing toward two imminent problems, the depletion of fossil fuel reserves and the negative impact on global climate....
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Effects of retrogressive thaw slumping on particulate organic carbon dynamics in the Northwest Territories, Canada
DownloadSpring 2022
Climate change is increasing the frequency and intensity of thermokarst and accelerating the delivery of terrestrial organic material from previously sequestered sources to aquatic systems, where it is subject to further biochemical alteration. Rapid climate change in the glacially conditioned...
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Fluvial inorganic carbon cycling across divergently evolving permafrost landscapes (Yukon and Northwest Territories, Canada)
DownloadFall 2019
Across the circumpolar north, rapid warming and intensifying hydrologic cycles are accelerating permafrost thaw and strengthening land-freshwater linkages. Among the most significant implications of this change is the mobilization of large amounts of previously sequestered organic and inorganic...
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Out of the Dark, into the Light? Influence of Wildfire and Thermokarst on Greenhouse Gas Fluxes from Boreal Peat Landscapes near the southern Limit of Permafrost
DownloadFall 2024
Wildfire and permafrost thaw have been common disturbances in the boreal zone for millennia and are now intensified by warming due to human-made climate change. The Taiga Plains ecozone in northwestern Canada is warming at a faster rate than other regions. In this ecozone, permafrost is found at...