Search for dissertations about: "solvent"

Showing result 1 - 5 of 715 swedish dissertations containing the word solvent.

  1. 1. Accelerated Solvent Extraction : Sample Preparation Using High Diffusion Liquids

    Author : Monica Waldebäck; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Chemistry; Kemi;

    Abstract : .... READ MORE

  2. 2. Microcalorimetric methods for direct measurement of solubility and solvent activity

    Author : Dennis Berling; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; enthalpy of solution; solubility; solvent fugacity; solvent activity; Isothermal calorimetry; vapour pressure; Chemistry; Kemi;

    Abstract : New calorimetric methods for direct measurement of solubility and solvent activity are presented. The classical role of calorimetry for measurements of enthalpic parameters is abandoned and the technique is instead used for assessing thermodynamic quantities related to the chemical potential of a substance in a solution. READ MORE

  3. 3. Development and Application of a First Principle Molecular Model for Solvent Effects

    Author : Anders Öhrn; Teoretisk kemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Theoretical chemistry; quantum chemistry; Teoretisk kemi; kvantkemi; magnetisk resonans; Fysikalisk kemi; Physical chemistry; gränsskikt; Ytkemi; Surface and boundary layery chemistry; spektroskopi; egenskaper elektriska; magnetiska och optiska ; supraledare; Kondenserade materiens egenskaper:elektronstruktur; spectroscopy; relaxation; magnetic resonance; supraconductors; magnetic and optical properties; Kemi; Condensed matter:electronic structure; electrical; Solvent model; Solvochromatic shift; Chemistry; Solvent effects; Solvation; Intermolecular interactions; Quantum chemistry; Statistical mechanics;

    Abstract : A considerable part of chemistry in nature and industry, takes place in an environment of other molecules. Reactions, transitions, interactions or other chemical processes are almost always modified by the environment. READ MORE

  4. 4. Diluent and Solvent Effects in Liquid-Liquid Extraction Systems based on bis-triazine-bipyrididine (BTBP)-class Ligands

    Author : Elin Löfström Engdahl; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; Used nuclear fuel; Density; Solvent; Extraction vs. time; BTBP; GANEX; Liquid-Liquid Extraction; Interfacial tension; Diluent;

    Abstract : Used nuclear fuel taken directly from a reactor is radiotoxic for mankind and its environment for a long time. One of the major contributions to the long time radiotoxicity is the presence of a group of elements called the actinides. READ MORE

  5. 5. Enzyme substrate solvent interactions : a case study on serine hydrolases

    Author : Linda Fransson; Karl Hult; Jürgen Pleiss; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; lipase; esterase; specificity; Bioengineering; Bioteknik;

    Abstract : Reaction rates and selectivities were measured for transacylation of fatty acid esters in solvents catalysed by Candida antarctica lipase B and by cutinase from Humicola insolens. With these enzymes classical water-based enzymology can be expanded to many different solvents allowing large variations in interaction energies between the enzymes, the substrates and the surrounding. READ MORE