Sökning: "Oxygen Reduction"
Visar resultat 1 - 5 av 483 avhandlingar innehållade orden Oxygen Reduction.
1. Oxidation and reduction reactions of the water-oxidizing complex in photosystem II
Sammanfattning : 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. LÄS MER
2. Behavior of iron-based oxygen carriers at deep reduction states
Sammanfattning : 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. LÄS MER
3. Properties of oxygen carriers based on natural and waste materials at high degrees of reduction
Sammanfattning : 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. LÄS MER
4. Iron-nitrogen containing carbon catalysts for oxygen reduction in fuel cells
Sammanfattning : 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. LÄS MER
5. Intrarenal oxygen homeostasis in acute and chronic kidney disease
Sammanfattning : 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). LÄS MER