Sökning: "cryo-TEM"

Visar resultat 16 - 20 av 33 avhandlingar innehållade ordet cryo-TEM.

  1. 16. Development and Evaluation of Lipodisks Intended for Use as Biomimetic Membranes and Drug Carriers

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Malin Morin Zetterberg; Uppsala universitet.; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; model membranes; drug delivery; drug partitioning; antimicrobial peptides; nanocarriers; cryo-TEM; polymer-stabilized bilayer disks; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Sammanfattning : Polyethylene glycol-stabilized lipodisks have emerged as a novel type of lipid-based nanoparticles with high potential as both drug carriers and biomimetic membranes. In this thesis we assess both of these applications, and show how the properties of the lipodisks can be further developed and optimized. LÄS MER

  2. 17. Physico-Chemical Investigations of Bilayer Discs and Related Lipid Structures Formed in Liposomal Systems Intended for Triggered Release

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Maria Sandström; Uppsala universitet.; [2007]
    Nyckelord :Physical chemistry; liposome; triggered release; pH-sensitive liposomes; temperature-sensitive liposomes; drug partitioning; cryo-TEM; discs; Fysikalisk kemi;

    Sammanfattning : This thesis describes results from fundamental studies of liposomes intended for drug delivery and pH or temperature triggered release. In addition, the effect of lipid composition on bilayer disc formation and a potential application of the bilayer discs were investigated. LÄS MER

  3. 18. A Waterborne Colloidal Model System Consisting of Fluorinated Spheres Bearing Grafted PEG: Synthesis, Characterization and Properties

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jeanette Ulama; Göteborgs universitet.; Gothenburg University.; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; colloidal model system; steric stabilization; core-shell; poly ethylene glycol PEG ; heptafluorobutyl methactylate HFBMA ; fluorinated; polymer; phase behavior; short-range attractions; semi-batch emulsion polymerization; small angle X-ray scattering SAXS ; smearing effects; dynamic light scattering DLS ; cryogenic-transmission electron microscopy cryo-TEM ;

    Sammanfattning : Model systems have expanded our knowledge of numerous phenomena in Colloid Science, such as the appearance of glasses, order-disorder transitions involving crystals and attraction induced formation of gels. So far, the existing colloidal model systems have been limited mainly to nonaqueous media. LÄS MER

  4. 19. Organization of Nanoparticles in Solution-A TEM Study

    Detta är en avhandling från Materials Chemistry, Kemicentrum, Lund University, P.O. Box 124, S-22100 Lund, Sweden

    Författare :Olivier Balmes; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; materialteknik; Materiallära; Material technology; organisation; plunge freezing; TEM; nanoparticle; transmission electron microscopy;

    Sammanfattning : A new approach to the study of nanoparticle systems has been introduced. Nanoparticle systems in aqueous and organic solutions have been synthesized and studied by transmission electron microscopy. These systems include nanoparticles of gold, silver, palladium, ruthenium, and platinum which have been stabilized using various ligands. LÄS MER

  5. 20. Adsorption of proteins on zeolite FAU

    Detta är en avhandling från Center for Chemistry and Chemical Engineering

    Författare :Daniel Klint; Lunds universitet.; Lund University.; [1999]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cryo-electron microscopy; matrix preparation; protein purification; zeolites; Inorganic chemistry; Oorganisk kemi;

    Sammanfattning : A highly dealuminated form of zeolite FAU, ultra-stable zeolite Y (USY), was used as an adsorbent matrix in the purification of proteins. Undesired proteins were removed from a crude preparation by adsorption on USY, increasing the purity of an unadsorbed protein (horse radish peroxidase), or the protein of interest was adsorbed on the zeolite and subsequently eluted through changes in the solution conditions (hen egg lysozyme, mouse-immunoglobulin G). LÄS MER