Sökning: "Vesicles"

Visar resultat 16 - 20 av 435 avhandlingar innehållade ordet Vesicles.

  1. 16. Association and Microstructure in Self-Assembling Catanionic Systems

    Författare :Eduardo Marques; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PFG NMR self-diffusion; cryogenic-transmission electron microscopy; catanionic systems; gels; bile salts; polyelectrolytes; liquid crystals; vesicles; Surfactants; phase diagrams; light microscopy; Theoretical chemistry; quantum chemistry; Teoretisk kemi; kvantkemi;

    Sammanfattning : This thesis addresses the phase behavior and phase structure in mixed surfactant-surfactant and surfactant-polymer systems, where the co-solutes have opposite charges (catanionic systems). The initial goal has been to investigate self-assembly aspects in mixtures of single-/double-chained surfactants and bile salt/double-chained surfactants, with the main focus on vesicle assembly in dilute regions. LÄS MER

  3. 17. Exosomal Shuttle RNA

    Författare :Karin Ekström; Göteborgs universitet; []
    Nyckelord :exosomes; exosomal; shuttle; RNA; esRNA; vesicles; mast cell; gene transfer; microRNA;

    Sammanfattning : Exosomes are small membrane nanovesicles of endocytic origin that can be released by many different cells to the extracellular environment. Exosomes have been found in a number of body fluids such as blood plasma, breast milk, bronchoalveolar lavage fluid and urine, indicating relevance in vivo. LÄS MER

  4. 18. Diffusion in cationic vesicle and micellar solutions- a NMR study

    Författare :Cecilia Groth; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; vesicles; Stopped-flow; micellar kinetics; water transport; DSC; Gemini surfactant; permeability; NOESY; Cationic surfactant; NMR diffusometry; extrusion;

    Sammanfattning : Double tailed cationic surfactants are the active component in softeners. In the beginning of the 90s the active component in softener formulations was changed from a hydrolytically stable dialkyl dimethyl ammonium chloride (dialkyl quat) to a cleavable and biodegradable product containing ester groups in the alkyl chains (dialkyl ester quat). LÄS MER

  5. 19. Helicobacter pylori : molecular mechanisms for variable adherence properties

    Författare :Anna Vallström; Anna Arnqvist; Kristian Riesbeck; Umeå universitet; []
    Nyckelord :H. pylori; adherence; BabA; SabA; Leb; sLex; phase variation; recombination; vesicles;

    Sammanfattning : More than half of all people worldwide are infected with H. pylori. The infection always cause a gastric inflammation that may develop into peptic ulcer disease or gastric cancer. Attachment proteins, adhesins, mediate specific adherence of H. LÄS MER

  7. 20. A physico-chemical investigation of cationic surfactants in solution

    Författare :Cecilia Groth; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; relaxation times; stopped-flow technique; gemini surfacant; micelle kinetics; Cationic surfacant; self-diffusion NMR; vesicles; permeability;

    Sammanfattning : .... LÄS MER