Search for dissertations about: "intrinsic solubility"

Showing result 1 - 5 of 15 swedish dissertations containing the words intrinsic solubility.

2. 1. Computational Analysis of Aqueous Drug Solubility – Influence of the Solid State

   Author : Carola Wassvik; Per Artursson; Anders G Holmén; Valentino J. Stella; Uppsala universitet; []
   Keywords : Pharmaceutics; intrinsic solubility; solubility prediction; drug solubility; solid state; melting point; enthalpy of melting; entropy of melting; solvation; free energy of hydration; QSPR; multivariate analysis; PCA; PLS; Galenisk farmaci;

   Abstract : Aqueous solubility is a key parameter influencing the bioavailability of drugs and drug candidates. In this thesis computational models for the prediction of aqueous drug solubility were explored. READ MORE

4. 2. Novel and refined small-scale approaches to determine the intrinsic dissolution rate of drugs

   Author : Sara B. E. Andersson; Göran Alderborn; Göran Frenning; Peter Langguth; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; dissolution; intrinsic dissolution rate; poorly water-soluble compounds; single particle dissolution; solubility; Farmaceutisk vetenskap; Pharmaceutical Science;

   Abstract : Many drugs are administered as crystalline particles compressed into tablets and taken orally. When the tablet reaches the gastrointestinal tract, it disintegrates and the drug particles dissolve in the gastrointestinal fluid. The dissolved molecules are absorbed across the intestinal membranes into the bloodstream to reach their target sites. READ MORE

5. 3. Defect Engineering in Kesterite Materials for Thin Film Solar Cells

   Author : Katharina Rudisch; Jonathan J. Scragg; Alain Lafond; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CZTS; thin film solar cells; defect engineering; composition-spread films; order disorder transition; intrinsic defects; secondary phases; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

   Abstract : Cu2ZnSnS4 has great potential to be applied as an earth abundant and non-toxic absorber material in thin film solar cells, based on its suitable optical properties. However, several challenges have prevented the achievable efficiencies from exceeding 12.6 %, which is well below marketable efficiencies compared to competing solar cell technologies. READ MORE

6. 4. Electronic Structure Calculations of Point Defects in Semiconductors

   Author : Andreas Höglund; Susanne Mirbt; Alison Mainwood; Uppsala universitet; []
   Keywords : Physics; electronic structure calculations; point defects; semiconductor; formation energy; equilibrium solubility limit; thermodynamic equilibrium concentration; transfer levels; negative-U; 110 surface; diffusion; activation energy; solar cells; Fysik;

   Abstract : In this thesis point defects in semiconductors are studied by electronic structure calculations. Results are presented for the stability and equilibrium concentrations of native defects in GaP, InP, InAs, and InSb, for the entire range of doping conditions and stoichiometry. READ MORE

7. 5. The effects of solid state properties on solubility and "in vitro" dissolution behaviour of suspended sparingly soluble drugs

   Author : Mitra Mosharraf; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; galenisk farmaci; Pharmaceutics;

   Abstract : The solubility and dissolution behaviour of hydrophobic and hydrophilic sparingly soluble drugs is discussed in this thesis. The roles of varying particle dimensions, disordered (amorphous) solid structures and the coexistence of amorphous and crystalline phases, especially on the surfaces of particles with a crystalline core, are evaluated in this context. READ MORE