Sökning: "Vesicles"

Visar resultat 1 - 5 av 220 avhandlingar innehållade ordet Vesicles.

  1. 1. Vesicles vs. surfaces

    Detta är en avhandling från Chalmers University of Technology

    Författare :Erik Reimhult; Chalmers tekniska högskola.; Chalmers University of Technology.; [2002]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  2. 2. Formation of Block Copolymer and Surfactant Vesicles

    Detta är en avhandling från Karin Bryskhe, Villav. 8, 232 53 Åkarp

    Författare :Karin Bryskhe; Lunds universitet.; Lund University.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysikalisk kemi; Polymerteknik; biopolymers; Polymer technology; nanoparticles; Lipid; triblock copolymer; surfactants; Nonionic; Vesicles; Formation; Physical chemistry;

    Sammanfattning : In this thesis temperature induced vesicle formation in both a block copolymer system and nonionic surfactant system have been investigated. The block copolymer is a triblock copolymer of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO), PEO-PPO-PEO, with the average molecular composition of EO5PO68EO5 and the commercial trade name Pluronic L121 (papers I, II). LÄS MER

  3. 3. Tethered Lipid Vesicles as Nanoscale Sensor Elements

    Detta är en avhandling från Chalmers University of Technology

    Författare :Seyed Tabaei; Chalmers tekniska högskola.; Chalmers University of Technology.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; antiviral peptide; aquaporin; aquaglyceroporin; biosensing; cell membrane; lipid bilayer; lipid vesicles; microfluidics; phospholipase A2; pore formation; surface plasmon resonance SPR ; total internal reflection fluorescence TIRF microscopy;

    Sammanfattning : The primary aim of this thesis work has been to explore and advance the potential of surface tethered lipid vesicles as a platform for studying in particular the following three biomembrane-related processes: trans-membrane transport, membrane-peptide interactions and the activity of membrane active enzymes. First, a method based on surface plasmon resonance (SPR) spectroscopy was developed for studying passive diffusion processes as well as the membrane-protein mediated transport of small non electrolyte molecules across lipid bilayers. LÄS MER

  4. 4. DNA-Controlled Lipid-Membrane Fusion

    Detta är en avhandling från Chalmers University of Technology

    Författare :Lisa Simonsson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biofysik; Biophysics; biomembranes; membrane fusion; vesicles; lipid bilayer; self-assembly; DNA; site-specificity; diffusion; model system; exocytosis; total internal reflection fluorescence microscopy; TIRF microscopy; fluorescence resonance energy transfer; FRET;

    Sammanfattning : Membrane fusion is essential for nerve-cell communication, for protein transport between cell organelles and the cell-membrane and for enabling the merger between virus and host membranes during virus infection. We have demonstrated that short DNA oligonucleotides, membrane-attached via CH in an orientation that mimics the overall zipperlike architecture of fusion-inducing proteins, induce fusion of both suspended vesicles and vesicles site-specifically tethered to SLBs. LÄS MER

  5. 5. Structural Changes in Nonionic Surfactant Systems

    Detta är en avhandling från Media-Tryck

    Författare :Sanja Bulut; Lunds universitet.; Lund University.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nonionic Surfactant; Vesicles; Wormlike Micelles; Lamellar Phase; NMR; MRI; SLS; DLS; cryo-fracture-TEM; centrifugation; cryo-TEM;

    Sammanfattning : In this thesis we have studied structural changes of a nonionic surfactant self-assembly, as governed by changes in temperature and concentration. The techniques used in experimental investigations were dynamic and static light scattering, nuclear magnetic resonance and cryo-transmission electron microscopy (using a novel specimen preparation protocol). LÄS MER