Sökning: "proton NMR spectroscopy"

Visar resultat 16 - 20 av 28 avhandlingar innehållade orden proton NMR spectroscopy.

  1. 16. NMR studies of Carbohydrate Structure and Dynamics in Solution

    Författare :Torgny Rundlöf; Thomas Peters; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic Chemistry; organisk kemi;

    Sammanfattning : Methods for studies of the structures of carbohydrates in solution and their dynamics are presented. Approaches employing nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry (MS), force-field computer simulations and chemical methods are described. LÄS MER

  3. 17. Solid state 29Si and 27Al magic angle spinning NMR studies of mechanochemically modified cement

    Författare :Karin Johansson; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry of Interfaces; Gränsytors kemi;

    Sammanfattning : Solid state 29Si and 27Al magic angle spinning (MAS) NMR spectroscopy has been used to investigate how mechanochemical modification affects the hydration kinetics, as well as the structural and chemical properties, in cement blends. The modification comprises intensive treatment of rapid hardening Portland cement with condensed silica fume additive in a vibrating grinding mill. LÄS MER

  4. 18. Glutaredoxin 3 from Escherichia coli : NMR structure analysis and structural aspects of the enzymatic mechanism

    Författare :Kerstin Nordstrand; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The structure of Escherichia coli glutaredoxin 3 (Grx3) was investigated using NMR spectroscopy in combination with isotope labeling. Nearly complete sequence specific assignment were obtained for the reduced Grx3 using a 15N enriched protein sample. LÄS MER

  5. 19. Protein structures and protein-solvent interactions : development and application of methods in high-resloultion nuclear magnetic resonance spectroscopy

    Författare :Hannes Ponstingl; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Nuclear magnetic resonance (NMR) spectroscopy in solution was used for the structural characterization of the proteins glutaredoxin-3 and flavodoxin from E. coli. A new NMR technique for the measurement of three-bond a proton-amide proton scalar coupling constants was developed. LÄS MER

  7. 20. Structural Studies of Hyaluronan Hydrogels

    Författare :Frida Wende; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Hydrogels consist of cross-linked polymer networks with the ability to absorb large amounts of water. In this thesis, the structures of hydrogels consisting of hyaluronic acid (HA) cross-linked by 1,4-butanediol diglycidyl ether (BDDE) have been investigated. LÄS MER