Sökning: "reversed hexagonal phase"

Hittade 5 avhandlingar innehållade orden reversed hexagonal phase.

  1. 1. FACING THE CHALLENGE OF SKIN PENETRATION - A STUDY ON LIPIDIC LIQUID CRYSTALLINE PHASES FOR DERMAL DRUG DELIVERY

    Författare :Hanne Evenbratt; Chalmers tekniska högskola; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; 5-diol; liquid crystalline phases; N-Methyl-2-pyrrolidone; pentane-1; glyceryl monooleat; propylene glycol; dermal drug delivery; glyceryl monooleyl ether; cubic phase; reversed hexagonal phase;

    Sammanfattning : The skin is a barrier which protects us against daily attacks of foreign substances. From a pharmaceutical perspective it is also an interesting delivery route with its large surface and possibility to reach the blood stream circumventing first passage metabolism. With the varied size, structure etc. LÄS MER

  3. 2. Lipid Self-Assembly and Lipase Action

    Författare :Johanna Borné; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; specific activity.; Physical chemistry; Fysikalisk kemi; vesicles; cubosomes; liquid crystalline phases; sodium oleate; oleic acid; diolein; monoolein; Oleic acid based acyl glycerols; Thermomyces lanuginosa lipase;

    Sammanfattning : In this thesis the action of the Thermomyces lanuginosa lipase (TLL) on "real" substrates, that is, lipid aggregates - vesicles, micelles, emulsions, gels and liquid crystals is discussed. Even for a pure triolein, the system becomes quite complex as the lipolytic process starts, both in terms of structure and composition, involving 5 additional components - diolein (DO), monoolein (MO), oleic acid (OA), sodium oleate (NaO) and glycerol . LÄS MER

  4. 3. Effects of polymeric surfactants on the crystallisation of inorganic materials

    Författare :Per Kjellin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mesostructures; CdS; calcium carbonate; self-assembling phases; calcite; CaCO3; Ag; crystal polymorphs; nanostructures; surface active polymers; SrCO3;

    Sammanfattning : This thesis concerns effects of polymeric surfactants on the crystal growth of inorganic structures. The crystal growth of calcium carbonate on steel surfaces was studied with a heat exchanger cell and with an electrochemical method. LÄS MER

  5. 4. NMR Diffusion Studies in Heterogeneous Systems. Surfactant solutions, Polymer solutions and Gels

    Författare :Magnus Nydén; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; pfg nmr; polydispersity ehec ddas; polymer surfactant self-diffusion self-association heterogeneous media; Fysikalisk kemi;

    Sammanfattning : The aim of this study has been to investigate the self-diffusion behaviour in polymer solutions and in surfactant solutions using the pulsed field gradient (PFG) NMR technique. The NMR self-diffusion experiment was shown to provide detailed information in complex surfactant mixtures. LÄS MER

  7. 5. Milk Membrane Lipids - Dispersions, Emulsions and Interactions with Proteins

    Författare :Rianne Waninge; Livsmedelsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Food and drink technology; Model milk membrane lipids; Emulsions; Vesicles; Cryo-TEM; Milk fat globule membrane; MFGM; Livsmedelsteknik;

    Sammanfattning : Milk is a dilute aqueous dispersion with a complex mixture of proteins, fat, carbohydrates, vitamins and minerals. Milk membrane lipids are a part of the milk fat globule membrane (MFGM), which covers the fat globules. During dairy processing membrane material is released and surface structure features are altered. LÄS MER