Search for dissertations about: "oxygen reduction"
Showing result 1 - 5 of 483 swedish dissertations containing the words oxygen reduction.
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1. Oxidation and reduction reactions of the water-oxidizing complex in photosystem II
Abstract : The oxygen that we breathe and food that we eat are products of the natural photosynthesis. Molecular oxygen is crucial for life on Earth owing to its role in the glycolysis and citric acid pathways that yield in aerobic organisms the energy-rich ATP molecules. READ MORE
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2. Behavior of iron-based oxygen carriers at deep reduction states
Abstract : Oxygen carriers have an important role as bed materials in both common circulating fluidized bed combustion unit (also known as oxygen-carrier-aided combustion, OCAC) and in various chemical looping processes. Contrary to conventional bed materials, e.g., sand, oxygen carriers are capable of transferring both oxygen and heat. READ MORE
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3. Properties of oxygen carriers based on natural and waste materials at high degrees of reduction
Abstract : Oxygen carriers play an important role in multiple energy conversion processes, such as chemical-looping technology and oxygen-carrier-aided combustion. This thesis particularly explores how a high reduction degree of an oxygen carrier can affect its performance. READ MORE
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4. Iron-nitrogen containing carbon catalysts for oxygen reduction in fuel cells
Abstract : New solutions to efficiently convert energy are needed to mitigate global climate changes and sustain the needs of the growing population. An energy device with high potential is the proton exchange membrane (PEM) fuel cell. PEM fuel cells can convert chemical energy to electrical energy with extraordinary high conversion efficiency. READ MORE
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5. Intrarenal oxygen homeostasis in acute and chronic kidney disease
Abstract : Renal hypoxia has been recognized as a common feature of acute and chronic kidney injury arising from varying etiologies. It has also been proposed to provide a driving mechanism for the transition from acute to chronic kidney disease (CKD). READ MORE