### Recent Submissions

• #### Alternative gauge for the description of the light-matter interaction in a relativistic framework ﻿

(American Physical Society, 2017-08)
We present a generalized velocity gauge form of the relativistic laser-matter interaction. In comparison with the (equivalent) regular minimal coupling description, this form of light-matter interaction results in superior ...
Journal article
• #### Temperatur og salinitets påvirkning på viskositeten til delvis hydrolyserte polymer med og uten hydrofobe substituenter ﻿

(The University of Bergen, 2017-09-15)
I denne oppgaven sammenlignes viskositetsutviklingen som funksjon av temperatur for to hydrofobisk modifiserte polyelektrolytter og en polyelektrolytt uten hydrofobe substituenter. Målingene er utført ved to ulike ...
Master thesis
• #### On the contribution of thermal excitation to the total 630.0 nm emissions in the northern cusp ionosphere ﻿

(American Geophysical Union, 2017-01)
Direct impact excitation by precipitating electrons is believed to be the main source of 630.0 nm emissions in the cusp ionosphere. However, this paper investigates a different source, 630.0 emissions caused by thermally ...
Journal article
• #### Numerical Investigation of Particle Dispersion in a Gravitational Field and in Zero Gravity. ﻿

(The University of Bergen, 2017-08-31)
Combustible solid particles dispersed in gas has previously been discovered to be a precursor to a potential dust explosion. Consequently, a growing interest on the subject has been observed in recent years. Numerous ...
Master thesis
• #### Effect of different surfactant structures on the brine-crude oil and brine-alkane interface in different aqueous environments. ﻿

(The University of Bergen, 2017-06-16)
In producing oil fields, both the production rate and ultimate recovery from the field can be enhanced by injection of chemicals into the reservoir formation. To optimise the commercial benefits, it is important to ...
Master thesis
• #### Simulation Study of Polymer Injectivity and Rheology in Radial Models ﻿

(The University of Bergen, 2017-08-02)
The simulation study conducted in this thesis was carried out at the Centre for Integrated Petroleum Research (Uni CIPR) at the University of Bergen (UiB). The main objective in this thesis was to study polymer rheology ...
Master thesis
• #### Acoustic Signatures of Gas Hydrates - Observations and Modelling ﻿

(The University of Bergen, 2017-08-08)
Interpretation of a Bottom Simulating Reflector (BSR) associated with gas hydrate accumulations in seismic, depend on gas hydrate saturation and distribution in pore voids. The BSR cannot predict gas hydrate saturation ...
Master thesis
• #### Upscaling on Fracture Flow Models ﻿

(The University of Bergen, 2017-08-25)
Fractures have a great impact on the quality of a porous media. The understanding of the fractures is important to describe the challenges linked to flow of geothermal heat, the transport of groundwater or transport of ...
Master thesis
• #### Asymmetric Ionospheric Equivalent Currents at Magnetic Conjugate Points ﻿

(The University of Bergen, 2017-07-01)
In this thesis we will study high-latitude ionospheric equivalent currents at magnetic conjugate points. The following questions have been addressed in this thesis: What solar zenith angle defines the dark-sunlit terminator? ...
Master thesis
• #### Design of a 60 GHz VCO Hybrid Microstrip Resonator in a 0.13-µm Sige process ﻿

(The University of Bergen, 2017-06-29)
Augmented reality, 4K television and video gaming. These are just some examples were the wireless products lacks performance in terms of multi-gigabit data transfers. A solution to this challenge is the 60 GHz band. The ...
Master thesis
• #### Experimental Determination of Hydrogen-Air Laminar Burning Velocities, and the Effect of Water Mist ﻿

(The University of Bergen, 2017-06-28)
This research project characterises an experimental set-up with the aim of finding laminar burning velocities of premixed hydrogen-air (dry) mixtures, at initial pressure and pressure of 294 K and 1 bar, using a 20 litre ...
Master thesis
• #### Design of a high power OOK modulator and verification of circuits in 60GHz SiGe BiCMOS ﻿

(The University of Bergen, 2017-06-29)
In this thesis, components for the UiB 60 GHz system are verified numerically and an on-off-keying (OOK) modulator is designed. Presence of mass in particle detector systems decrease the accuracy measuring the particle paths. ...
Master thesis
• #### Phase field theory modeling of CH4/CO2 gas hydrates in gravity fields ﻿

(PiscoMed Publishing, 2011)
Natural gas hydrates in reservoirs are thermodynamically unstable due to the interactions with surrounding fluids (aqueous, gas) and mineral surfaces. Depending on the local flow hydrate will dissociate as well as reform. ...
Journal article
• #### Mix Hydrate formation by CH4-CO2 exchange using Phase Field Theory with implicit Thermodynamics ﻿

(International Energy and Environment Foundation (IEEF)., 2012)
Natural gas hydrates are ice-like structures composed of water and gas (mostly methane) molecules. They are found worldwide and contain huge amounts of bound methane. Therefore, it represent potentially vast and yet ...
Journal article
• #### Thermodynamic and Kinetic Modeling of CH4/CO2 Hydrates Phase transitions ﻿

(International Energy and Environment Foundation (IEEF)., 2013)
Natural gas hydrates in reservoirs are thermodynamically unstable due to exposure to mineral surfaces and possibly undersaturated phases of water and hydrate formers. Changes in global temperatures also alter the ...
Journal article
• #### Nano to Micro Scale Modeling of Hydrate Phase Transition Kinetics ﻿

(The University of Bergen, 2017-05-23)
Doctoral thesis
• #### Construction of a plan library for high risk prostate cancer patients in proton therapy ﻿

(The University of Bergen, 2017-06-27)
High-risk prostate cancer patients can receive treatment of both the pelvic lymph nodes and seminal vesicles, in addition to the prostate based on an estimated risk of lymph node spread. Due to the large volume being ...
Master thesis
• #### Azimuthal anisotropy of charged jet production in $\sqrt{s_{\rm NN}}=2.76$ TeV Pb–Pb collisions ﻿

(Elsevier, 2016-02)
This paper presents measurements of the azimuthal dependence of charged jet production in central and semi-central $\sqrt{s_{\rm NN}}=2.76$ TeV Pb–Pb collisions with respect to the second harmonic event plane, quantified ...
Journal article
• #### Effects of an Arctic under-ice bloom on solar radiant heating of the water column ﻿

(Wiley, 2017-01)
The deposition of solar energy in the upper Arctic Ocean depends, among other things, on the composition of the water column. During the N-ICE2015 expedition, a drift in the Arctic pack ice north of Svalbard, an under-ice ...
Journal article
• #### Recalibration of the MEPED Proton Detectors Onboard NOAA POES Satellites ﻿

(Universitetet i Bergen (UiB), 2013-07-04)
In this thesis we have calibrated energetic proton data from the solid state detectors of the MEPED instrument onboard the satellites NOAA 15, 16, 17, 18, and MetOp 02. All these satellites are part of the NOAA/POES program, ...
Master thesis