Direct observation of nuclear spin diffusion in real space
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Pulsed Field Gradients (PFGs) have become ubiquitous tools not only for Magnetic Resonance Imaging (MRI), but also for NMR experiments designed to study translational diffusion, for spatial encoding in ultra-fast spectroscopy, for the selection of desirabl ...
Self-diffusion NMR spectroscopy and relaxometry have been employed to study fragrance encapsulation in water-soluble, amphiphilic star block copolymers. Diffusion coefficients of four different fragrance molecules in the free form and in the presence of th ...
The goal of this research work is to investigate and develop a framework for medical visualization, answering the needs of both end users (clinicians), working in their specific domain, and application designers, who build applications and visualizations f ...
A pulsed field gradient NMR (= nuclear magnetic resonance) method using stimulated echoes for determining the translational isotropic or anisotropic diffusion coefficient of a molecule or supramolecular assembly or the flow rate and direction of fluids con ...
Simulations of exact spin dynamics in systems of multiple nuclear spins are limited to relatively small numbers of spins by the large size of the Hamiltonian matrices for dipolar-coupled spin systems. We propose using the translational symmetry of periodic ...
Internal motions in proteins, such as oscillations of internuclear vectors u(NiHiN) of amide bonds about their equil. position, can be characterized by a local order parameter. This dynamic parameter can be detd. exptl. by measuring the longitudinal and tr ...
In this thesis, we investigate the effectiveness of semantic fisheye views for opportunistic search and sensemaking tasks over large collections of annotated images. Semantic fisheye views are interactive visualization techniques that reveal semantic detai ...
Although many three-dimensional (3D) medical imaging visualization methods exist, 3D volume slicing remains the most commonly used technique for visualizing medical data from modalities such as CT, MRI, and PET. We propose to extend the possibilities of ob ...
The effect of nitrogen-15 proton-driven spin diffusion on quantitative N-15 T-1 measurements in solid proteins is investigated, and the impact on the measurement of dynamic parameters is assessed. A simple model of exchange between neighboring nitrogens is ...
Nuclear spin-lattice relaxation measurements were performed on Co-based magnetic nanowires, in zero field and in 1 T applied field. A measurement method is developped that allows a confident interpretation of the experimental data. An enhanced relaxation d ...