Sökning: "Polymorphs"

Visar resultat 1 - 5 av 42 avhandlingar innehållade ordet Polymorphs.

  1. 1. Preparation of Pharmaceutical Powders using Supercritical Fluid Technology : Pharmaceutical Applications and Physicochemical Characterisation of Powders

    Författare :Sitaram Velaga; Johan Carlfors; Kristiina Järvinen; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutics; Supercritical fluid; Gas Anti-Solvent; SEDS; Crystallisation; Particle design; Polymorphs; Dry powder inhalation; Solid-state behaviour; Therapeutic proteins; Precipitation; Stability; Recombinant human growth hormone hGH ; Galenisk farmaci; Pharmaceutics; Galenisk farmaci;

    Sammanfattning : The main aim of the thesis was to explore the potential of supercritical fluid (SF) techniques in the field of drug delivery. In particular, the relatively recently developed solution-enhanced dispersion by supercritical fluids (SEDS) technology has been employed in the preparation of particles/powders. LÄS MER

  3. 2. 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

  4. 3. The effect of polymeric surfactants on calcium carbonate structures

    Författare :Per Kjellin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; heat exchanger; X-ray diffraction; scanning electron microscopy; calcite; electrodeposition; crystal polymorphs; vaterite; calcium carbonate; surface active polymers;

    Sammanfattning : .... LÄS MER

  5. 4. Structure and Phase Stability of CaC2 Polymorphs, Li2C2 and Lithium Intercalated Graphite : A Revisit with High Pressure Experiments and Metal Hydride–Graphite Reactions

    Författare :Sumit Konar; Ulrich Häussermann; Gunnar Svensson; Arnold Guloy; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; acetylide carbides; high pressure; Raman spectroscopy; powder X-ray diffraction; Rietveld refinement; Materials Chemistry; materialkemi;

    Sammanfattning : Alkali (A) and alkaline earth (AE) metals can form carbides and intercalated graphites with carbon. The carbides mostly represent acetylides which are salt-like compounds composed of C22− dumbbell anions and metal cations. Both the acetylide carbides and intercalated graphites are technologically important. LÄS MER

  7. 5. Investigations of cellulose polymorphs by 13C-CP/MAS-NMR spectroscopy and chemometrics

    Författare :Helena Lennholm; Tommy Iversen; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER