Sökning: "solution exchange"

Visar resultat 11 - 15 av 205 avhandlingar innehållade orden solution exchange.

  1. 11. Exchange flows in estuaries and archipelagos

    Författare :Petter Stenström; KTH; []
    Nyckelord :;

    Sammanfattning : Different aspects of the exchange of water and tracersbetween adjacent coastal basins, and between the coast and thesea, are addressed. Deviations from the inviscid hydraulicprediction of flow rates and interface heights in maximaltwo-layer exchange flows due to viscous effects are quantifiedby means of non-hydrostatic, three-dimensional numericalmodeling. LÄS MER

  3. 12. Proton-Conducting Polymers and Membranes for Fuel Cells-Preparation and Properties

    Författare :Lina Karlsson; Kemiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polymer technology; solution properties; aggregation; state of the water; sulfonation; polyelectrolyte; polymer electrolyte; ionomer; acrylamide copolymer; polyphenylsulfone; polysulfone; water absorption; ion exchange membrane; proton conductivity; Polymerteknik; biopolymers;

    Sammanfattning : The development of new materials for use in fuel cells is of importance for the probable replacement of the combustion engine by this technology in public vehicles in the future. The proton-conducting polymer electrolyte membrane is one of the main components in the fuel cell. LÄS MER

  4. 13. Aspects of DNA Strand Exchange: Recombination Proteins and Model System Studies

    Författare :Karolin Frykholm; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DNA strand exchange; cationic liposome; Rad51; Site-Specific Linear Dichroism; RecA; molecular crowding;

    Sammanfattning : DNA recombination is of fundamental importance to all living cells; it is part of the DNA repair machinery and a means to generate genetic diversity. DNA strand exchange, the exchange of strands between homologous DNA molecules, is the central reaction of the recombination process. LÄS MER

  5. 14. Towards alkali-stable polymers and hydroxide exchange membranes functionalized with alicyclic quaternary ammonium cations

    Författare :Thanh Huong Pham; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hydroxide exchange membrane; fuel cell; alicyclic quaternary ammonium; alkali-stable; high hydroxide conductivity; structure-property relationship;

    Sammanfattning : In the current work, cationic polymers functionalized with N-alicyclic quaternary ammonium (QA) cations were synthesized and characterized as potential hydroxide exchange membranes (HEMs) for application in fuel cells. Three different polymers, namely poly(arylene ether sulfone), spiro-ionene and poly(arylene alkylene), were explored as polymer backbones for the HEMs. LÄS MER

  7. 15. Method Development in Quantitative and Structural Proteomics using Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

    Författare :Charlotte Hagman; Per Håkansson; Jonas Bergquist; Jos Buijs; Michael Przybylski; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; Cerebrospinal Fluid; Electrospray Ionization; Fourier Transform Ion Cyclotron Resonance Mass Spectrometry; Global Markers; High Performance Liquid Chromatography; Gas-Phase Exchange; Hydrogen Deuterium Exchange; Plasma; Protoemics; Quantification; Structural Elucidation; Bioteknik; Bioengineering; Bioteknik;

    Sammanfattning : In this thesis, methods for studying different aspects of proteomics were developed with Fourier Transform Ion Cyclotron Resonance, (FTICR), mass spectrometry. The FTICR technique provides ultra-high mass resolving power, mass accuracy at sub ppm level and sensitivity in the attomole region. LÄS MER