Sökning: "Membrane degradation"
Visar resultat 1 - 5 av 203 avhandlingar innehållade orden Membrane degradation.
1. Structural and biochemical insights into biosynthesis and degradation of N-glycans
Sammanfattning : Carbohydrates are a primary energy source for all living organisms, but importantly, they also participate in a number of life-sustaining biological processes, e.g. cell signaling and cell-wall synthesis. The first part of the thesis examines glycosyltransferases that play a crucial role in the biosynthesis of N-glycans. LÄS MER
2. Regulation of proton-coupled electron transfer in cytochrome c oxidase : The role of membrane potential, proton pathways and ATP
Sammanfattning : Cytochrome c oxidase (CytcO) is the final electron acceptor of the respiratory chain. In this chain a current of electrons, derived from degradation of nutrients, along with protons, are used to reduce oxygen to water. The reaction is exergonic and the excess energy is used to pump protons across the membrane. LÄS MER
3. On Gas Contaminants, and Bipolar Plates in Proton Exchange Membrane Fuel Cells
Sammanfattning : The proton exchange membrane (PEM) fuel cell is an electrochemical device that converts chemical energy into electrical energy through two electrocatalytic reactions. The most common catalyst used is platinum on carbon (Pt/C), which has shown the best performance in the fuel cell until now. LÄS MER
4. Investigations of proton conducting polymers and gas diffusion electrodes in the polymer electrolyte fuel cell
Sammanfattning : Polymer electrolyte fuel cells (PEFC) convert the chemically bound energy in a fuel, e.g. hydrogen, directly into electricity by an electrochemical process. Examples of future applications are energy conversion such as combined heat and power generation (CHP), zero emission vehicles (ZEV) and consumer electronics. LÄS MER
5. Basement membrane collagens in pancreatic cancer : novel stroma-derived tumor markers and regulators of cancer cell growth
Sammanfattning : Background: Among the common malignancies, pancreatic cancer has the shortest long-term survival. The aggressive, rapid, and infiltrative growth pattern of pancreatic cancer, together with the lack of specific symptoms, often leads to late diagnosis. LÄS MER