Blar i Faculty of Mathematics and Natural Sciences på emneord "Diffusion"
Viser treff 1-6 av 6
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Characterization of complex solutions using relaxation- and diffusion weighted NMR Spectroscopy.
(Master thesis, 2017-08-02)The need for a sustainable replacement to the conventional fossil fuels is required. Biooils is a potential replacement. The biooil analyzed in this thesis is made from lignin, which is a by-product of paper production. ... -
Diffusion as an Oil Recovery Mechanism During CO2 Injection in Fractured Reservoirs
(Master thesis, 2013-11-19)This thesis is part of an ongoing study of enhanced oil recovery by CO2 injection in the Reservoir Physics research group at the Department of Physics and Technology (IFT) at the University of Bergen. This work investigates ... -
Effect of Free Water Elimination on Diffusion Indices in Healthy Volunteers and Patients with Multiple Sclerosis
(Master thesis, 2018-11-08)Diffusion tensor imaging (DTI) is a technique in magnetic resonance imaging (MRI) that can be used to image the brain microstructure beyond the resolution that is achievable using conventional imaging. By utilizing DTI, it ... -
Likelihood Estimation of Jump-Diffusions. Extensions from Diffusions to Jump-Diffusions, Implementation with Automatic Differentiation, and Applications
(Master thesis, 2016-06-02)This thesis considers the problem of likelihood- based parameter estimation for time-homogeneous jump-diffusion processes. The problem is that there often is no analytic solution to the stochastic differential equations ... -
On Semi-implicit Splitting Schemes for the Beltrami Color Image Filtering
(Peer reviewed; Journal article, 2011)The Beltrami flow is an efficient nonlinear filter, that was shown to be effective for color image processing. The corresponding anisotropic diffusion operator strongly couples the spectral components. Usually, this flow ... -
Transport mechanisms for CO2-CH4 exchange and safe CO2 storage in hydrate-bearing sandstone
(Peer reviewed; Journal article, 2015-06-08)CO2 injection in hydrate-bearing sediments induces methane (CH4) production while benefitting from CO2 storage, as demonstrated in both core and field scale studies. CH4 hydrates have been formed repeatedly in partially ...