Sökning: "paramagnetic relaxation"
Visar resultat 16 - 20 av 31 avhandlingar innehållade orden paramagnetic relaxation.
16. An Analysis of NMRD profiles and ESR lineshapes of MRI Contrast Agents
Sammanfattning : To optimize contrast agent in MRI scan region, e.g. to enhance paramagnetic relaxation in the MRI scan fields(0.1T-3T), one possible way is to slow down the tumbling of the paramagnetic complex. LÄS MER
17. Some aspects of the slow motion problem in the NMR-relaxation theory : a theoretical study of high spin systems
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
18. Ab Initio Modeling of Magnetic Materials in the High-Temperature Paramagnetic Phase
Sammanfattning : The modeling of magnetic materials at finite temperatures is an ongoing challenge in the field of theoretical physics. This field has strongly benefited from the development of computational methods, which allow to predict material’s properties and explain physical effects on the atomic scale, and are now employed to direct the design of new materials. LÄS MER
19. The use of metal substitution in characterizing the catalytic mechanism of glyoxalase I
Sammanfattning : Glyoxalase I, a zinc enzyme, has been purified from human erythrocytes. The aim of this investigation was to examine the active center of this enzyme and its catalytic mechanism by applying different spectroscopic methods to the study of metal-substituted glyoxalase I. LÄS MER
20. Structural and magnetic disorder in crystalline materials : a first principles study
Sammanfattning : Disorder in crystalline materials can take different forms and originate from different sources. In particular, temperature introduces disorder in any kind of material. LÄS MER
