Sökning: "Per-olof Westlund"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Per-olof Westlund.

  1. 1. Gripsholm under vasatiden : en byggnadshistorisk undersökning

    Författare :Per-Olof Westlund; Stockholms högskola; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 2. Some aspects of the slow motion problem in the NMR-relaxation theory : a theoretical study of high spin systems

    Författare :Per-Olof Westlund; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : A theory of nuclear spin relaxation in paramagnetic complexes, allowing for the electron spin relaxation to be in the slow motion regime, is presented. The lattice i3 described in terms of the electron Zeeman interaction, a zero field splitting (ZFS) and a Markov operator for the relevant classical degrees of freedom. LÄS MER

  4. 3. Analysis of NMR Spin-lattice Relaxation Dispersion on Complex Systems

    Författare :Yang Huang; Per-Olof Westlund; Arnold Maliniak; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NMRD; relaxation theory; hydration; MD; FFC; PrxV; OEC complex; ZSM-5; BMIM [PF6; ]; fysikalisk kemi; Physical Chemistry;

    Sammanfattning : This thesis focus on the analysis of spin-lattice NMRD relaxation profilesmeasured in various complex systems such as proteins, zeolites and ionicliquids. Proton, deuterium and fluoride T1-NMRD relaxation profiles wereobtained from a fast-field cycling (FFC) instrument. LÄS MER

  5. 4. Simulation of Relaxation Processes in Fluorescence, EPR and NMR Spectroscopy

    Författare :Pär Håkansson; Per-Olof Westlund; Yehudi K. Levine; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; EPR; NMR; Energy migration; bicontinuous cubic phase; Stochastic Liouville Equation; Brownian Dynamics; Fysikalisk kemi; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : Relaxation models are developed using numerical solutions of the Stochastic Liouville Equation of motion. Simplified descriptions such as the stochastic master equation is described in the context of fluorescence depolarisation experiments. Redfield theory is used in order to describe NMR relaxation in bicontinuous phases. LÄS MER

  7. 5. On the mechanism of Urea-induced protein denaturation

    Författare :Matteus Lindgren; Per-Olof Westlund; Arnold Maliniak; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemical denaturation; Protein unfolding; urea; MD simulations; NMR spectroscopy; Biophysical chemistry; Biofysikalisk kemi; fysikalisk kemi; Physical Chemistry;

    Sammanfattning : It is well known that folded proteins in water are destabilized by the addition of urea. When a protein loses its ability to perform its biological activity due to a change in its structure, it is said to denaturate. LÄS MER