Sökning: "End membrane"

Visar resultat 21 - 25 av 132 avhandlingar innehållade orden End membrane.

  1. 21. Recovery of Hemicelluloses Extracted from Spruce and Wheat Bran : Membrane Filtration Process Development and Cost Estimates

    Författare :Johan Thuvander; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hemicelluloses; Membrane filtration; Galactoglucomannan; Arabinoxylan; Microfiltration; Ultrafiltration; Spruce; Wheat bran; Hemicellulosa; Membranfiltrering; Mikrofiltrering; Ultrafiltrering; Arabinoxylan; Galactoglucomannan; Gran; Vetekli;

    Sammanfattning : Hemicelluloses are a group of abundant polymers found in all plants and constitute about one third of the total plant biomass. These polymers can be used in many different products, such as oxygen barrier films, emulsifiers, foams and probiotic food additives. LÄS MER

  3. 22. The Rôle of Side-Chains in Polymer Electrolytes for Batteries and Fuel Cells

    Författare :Jaanus Karo; Hans Siegbahn; Daniel Brandell; Patrik Johansson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; molecular dynamics; polymer electrolytes; side-chains; Li-ion batteries; proton exchange membrane fuel cell PEMFC ; PFSA membrane; Other chemistry; Övrig kemi; Atomic and molecular physics; Atom- och molekylfysik; Materialvetenskap; Materials Science;

    Sammanfattning : The subject of this thesis relates to the design of new polymer electrolytes for battery and fuel cell applications. Classical Molecular Dynamics (MD) modelling studies are reported of the nano-structure and the local structure and dynamics for two types of polymer electrolyte host: poly(ethylene oxide) (PEO) for lithium batteries and perfluorosulfonic acid (PFSA) for polymer-based fuel cells. LÄS MER

  4. 23. Conformational properties of transmembrane polypeptide segments in the ER membrane

    Författare :IngMarie Nilsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :glycosylation; membrane protein; transmembrane helix; proline; charged residues;

    Sammanfattning : We have developed a new experimental approach where the active site of oligosaccharyl transferase is used as a point of reference against which the position of a transmembrane segment in the membrane can be measured. This so-called glycosylation mapping technique allows any transmembrane segment to be positioned relative to a known reference transmembrane helix with known position in the membrane. LÄS MER

  5. 24. Understanding structure and function of membrane protein transporters

    Författare :Anna-Karin Lundbäck; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Membrane protein transporters are important proteins in the cell, as they maintain different solutes and metabolites at a stable concentration. Numerous diseases can be linked to malfunctioning transporters, which makes them interesting pharmaceutical targets. LÄS MER

  7. 25. Insertion and Topology of Inner Membrane Proteins in Escherichia coli

    Författare :Annika Sääf; Tony Pugsley; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biokemi; Biochemistry;

    Sammanfattning : Integral membrane proteins are found in all cellular membranes and fulfil many of the functions that are central to life. They maintain the membrane structure, but are also involved in the regulation of different cellular processes. LÄS MER