Search for dissertations about: "deoxygenation"
Showing result 1 - 5 of 17 swedish dissertations containing the word deoxygenation.
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1. Coastal signals of environmental changes: foraminifera as benthic monitors
Abstract : Climate changes, tightly linked to anthropogenic activities, are significantly altering environments and ecosystems globally, such as by increasing marine and coastal deoxygenation or occurrences of extreme weather events. The significance of paleoenvironmental and -climate reconstructions, as well as monitoring of current conditions, for unravelling baseline natural variation, today’s changes and potential future impacts, has been recognised by the Intergovernmental Panel on Climate Change (IPCC) reports. READ MORE
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2. Samarium(II)-mediated Reactions in Organic Synthesis - Method Development and Mechanistic Investigation
Abstract : This thesis describes the development of methods using divalent samarium reagents in organic synthesis. The main focus is placed on functional group reductions, but reductive formation of carbon-carbon bonds has also been investigated. READ MORE
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3. Functionalized Porous Carbon Fiber Electrodes for Applications in Electrochemical Flow Cells
Abstract : Corrosion of metals in close-loop cooling or heating systems originates from tiny leakages at joints releasing oxygen into the thermal fluids. The presence of dissolved oxygen (DO) in thermal fluids, such as water with various additives forms a rust coating and some rust particles are released in the fluids and accumulate in an undesired place. READ MORE
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4. Kinetics of the catalytic hydrogenation of oxygen and its application to a process for deoxygenation of refinery gases
Abstract : A literature survey shows the detrimental effect of oxygen in refinery gases for various processes, and the need for a deoxygenation process. The present work has been confined to gases containing hydrogen sulfide, as is the case with shale gas. READ MORE
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5. Nutrient dynamics in coastal and shelf oceans - sediments as a regulator of eutrophication feedbacks
Abstract : Coastal and shelf systems are under increasing pressure from human activities. Many coastal systems currently suffer from excessive algae growth following increased nutrient input from land, a process called eutrophication. The algae eventually sink to the seafloor, where they are degraded, which consumes oxygen (O2). READ MORE