Sökning: "electron paramagnetic resonance EPR"

Visar resultat 1 - 5 av 33 avhandlingar innehållade orden electron paramagnetic resonance EPR.

  1. 1. Electron paramagnetic resonance study of defects in SiC

    Författare :Patrick Carlsson; Nguyen Tien Son; Erik Janzén; Evan R. Glaser; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Silicon carbide (SiC) is a wide bandgap semiconductor (energy gap of 3.26 eV and 3.03 eV for 4Hand 6H-SiC, respectively). With outstanding physical and electronic properties, SiC is a promising material for high-power, high-frequency and high-temperature applications. LÄS MER

  3. 2. Development of sensitive EPR dosimetry methods

    Författare :Håkan Gustafsson; Eva Lund; Anders Lund; Dag Rune Olsen; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Electron paramagnetic resonance EPR ; Formic acids; pharmacology; Lithium; Nickel; Radiometry; Rhodium; Pharmaceutical chemistry; Farmaceutisk kemi;

    Sammanfattning : Electron paramagnetic resonance (EPR) dosimetry using the well established dosimeter material alanine is a generally accepted dosimetric method for measurements of high absorbed doses. Alanine EPR dosimetry is however not sensitive enough for high precision measurements of low (< 5 Gy) absorbed doses using reasonably measurement times and small dosimeters. LÄS MER

  4. 3. Paramagnetic states of diiron carboxylate proteins

    Författare :Nina Voevodskaya; Astrid Gräslund; Peter Brzezinski; Howard Dalton; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electron paramagnetic resonance; diiron carboxilate proteins; ribonucleotide reductase; alternative oxidase; Biophysics; Biofysik;

    Sammanfattning : Diiron carboxylate proteins constitute an important class of metall-containing enzymes. These proteins perform a multitude of reactions in biological systems that normally involve activation of molecular oxygen at the diiron site. LÄS MER

  5. 4. Theoretical studies of EPR parameters of spin-labels incomplex environments

    Författare :Bogdan Frecus; Hans Ågren; Chiara Cappelli; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; EPR; DFT; spin-labels; QM MM; Breit-Pauli Hamiltonian;

    Sammanfattning : This thesis encloses quantum chemical calculations performed in the framework of density functional response theory for evaluating electron paramagnetic resonance (EPR) spin Hamiltonian parameters of various spin-labels in different environments. These parameters are the well known electronic g-tensor and the nitrogen hyperfine coupling constants, which are extensively explored in this work for various systems. LÄS MER

  7. 5. Quantum chemical calculations of electron paramagnetic resonance of biological radicals

    Författare :Maria Engström; Shashi Karna; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The aim of this thesis was to use state-of-the-art quantum chemical calculations of electron paramagnetic resonance (EPR) with applications to radicals in biomolecular systems. Special emphasis has been devoted to investigations of structure-to-property relations of amino acid radicals and spin labels in proteins. LÄS MER