Now showing items 21-40 of 597

• Spontaneous Imbibition in Sand - Viscosity Effects on Oil Recovery and Flow Using Polymer and Glycerol ﻿

(The University of Bergen, 2016-06-01)
Spontaneous imbibition experiments have historically been performed using all faces open (AFO) boundary condition. Due to complex flow patterns consisting of both counter- and co-current flow, modelling flow using established ...
Master thesis
• Study of Gas Mobility Control during CO2 Injection for Enhanced Oil Recovery ﻿

(The University of Bergen, 2016-06-01)
Carbon Dioxide (CO2) has been used as a commercial source for Enhanced Oil Recovery (EOR) for over 40 years. In recent years, the utilization of anthropogenic CO2 has become more attractive, because of its proven EOR ...
Master thesis
• Design of a 60 GHz Low Noise Amplifier in a 0.13 µm SiGe BiCMOS Process ﻿

(The University of Bergen, 2016-06-01)
The Large Hadron Collider (LHC) in CERN outside Geneva in Switzerland is scheduled for an upgrade to improve the luminosity. This upgrade will require higher granularity for the triggering system, increasing the need for ...
Master thesis
• Experimental Study of Foam Generation and Flow in Carbonate Fracture Systems ﻿

(The University of Bergen, 2016-06-01)
This experimental thesis study foam generation during co-injection of gas and surfactant in three fracture systems with increasing size: 2- inch core, 4-inch core and a fractured block network. Important parameters ...
Master thesis
• Development of a Monte Carlo Based Treatment Planning Verification Tool for Particle Therapy ﻿

(The University of Bergen, 2016-06-01)
Radiation therapy is an important component of cancer treatment. The favorable characteristics of proton radiation open the possibility of conforming the treatment dose to the target volumes and sparing of the surrounding ...
Master thesis
• Elever sin bruk av forkunnskaper i faglige diskusjoner under praktisk arbeid i naturfag ﻿

(The University of Bergen, 2016-06-01)
Forskning viser at elever mangler både kunnskaper og forkunnskaper. Forskning har også sett at elever har forkunnskaper, og at disse er nødvendige for videre kunnskapsbygging. For at elever skal kunne drøfte fysikk ...
Master thesis
• Vented gas and dust explosions - External explosions ﻿

(The University of Bergen, 2016-06-01)
The use of explosion venting is a widely applied safety measure, mitigating the effects of an internal gas and dust explosion. Implementation of this safety measure does however not eliminate all risks and hazards associated ...
Master thesis
• Development of a Transmitter for High Temperature Ultrasound Imaging ﻿

(The University of Bergen, 2016-06-01)
This thesis presents the development and testing of a new transmitter in an ultrasound imaging tool used for imaging the inside of oil wells in temperatures of up to 180 degrees Celsius. The imaging tool can have up to ...
Master thesis
• Polymer Enhanced Foam in Unconsolidated Sand ﻿

(The University of Bergen, 2016-06-01)
Foam is an EOR technique that significantly can improve the macroscopic sweep efficiency by lowering the gas mobility. Limited stability of conventional surfactants for foam generation is one of the reasons why foam is not ...
Master thesis
• Design of a 60 GHz Power Amplifier in a 0.13 µm SiGe BiCMOS Process ﻿

(The University of Bergen, 2016-06-01)
The wide bandwidth in the unlicensed 60 GHz band enable short range wireless data transfer in the order of tens of gigabit per second. This, combined with the relatively low-cost, very high performance SiGe fabrication ...
Master thesis
• Search for lepton flavour violating $H\rightarrow\mu\tau$ Higgs decays at 13 TeV ﻿

(The University of Bergen, 2016-06-01)
Master thesis
• Heterogeneous Hydrate Nucleation on Calcite {1014} and Kaolinite {001} Surfaces: A Molecular Dynamics Simulation Study ﻿

(The University of Bergen, 2016-06-01)
Natural gas hydrates are of significant interest due to the great amount of methane that can potentially be utilised as an energy source. These methane resources are trapped in ice-like form, which is a concern ...
Master thesis
• An Experimental Study of Foam Flow in Fractured Systems of Increasing Size ﻿

(The University of Bergen, 2016-06-01)
Although use of foam for gas mobility control is substantially covered in literature, large- scale field implementation is still absent in fractured reservoirs. Current understanding of foam behavior in fractured systems ...
Master thesis
• The impact of energetic electron precipitation on mesospheric hydroxyl during a year of solar minimum ﻿

(Wiley, 2016-06)
In 2008 a sequence of geomagnetic storms occurred triggered by high-speed solar wind streams from coronal holes. Improved estimates of precipitating fluxes of energetic electrons are derived from measurements on board the ...
Journal article
• New Phenomenological Constraints on the Gaugino Mediation Model ﻿

(The University of Bergen, 2016-05-31)
In this thesis, phenomenological consequences of the Gaugino Mediation model for SUSY breaking are explored. First, the very important trilinear coupling is proven to exist in Gaugino Mediation. Then, the parameter space ...
Master thesis
• Dynamic effects of restoring footpoint symmetry on closed magnetic field lines ﻿

(AGU Publications, 2016-05-05)
Here we present an event where simultaneous global imaging of the aurora from both hemispheres reveals a large longitudinal shift of the nightside aurora of about 3 h, being the largest relative shift reported on from ...
Journal article
• A Nonlinear Differential Equation Solver With Potential Application to Pelton Turbines ﻿

(The University of Bergen, 2016-05-02)
The focus in this thesis is the development and implementation of a new method for solving nonlinear differential equations on a grid. The method’s novelty lies in the way it represents continuously distributed variables ...
Doctoral thesis
• Ionization dynamics beyond the dipole approximation induced by the pulse envelope ﻿

(American Physical Society, 2016-05)
When atoms and molecules are ionized by laser pulses of finite duration and increasingly high intensities, the validity of the much-used dipole approximation, in which the spatial dependence and magnetic component of the ...
Journal article
• On the composite response of the MLT to major sudden stratospheric warming events with elevated stratopause ﻿

(Wiley, 2016-05)
Based on a climate-chemistry model (constrained by reanalyses below ~50 km), the zonal-mean composite response of the mesosphere and lower thermosphere (MLT) to major sudden stratospheric warming events with elevated ...
Journal article
• CP-Violation in the $ZZZ$ and $ZWW$ vertices at $e^+e^-$ colliders in Two-Higgs-Doublet Models ﻿

(Springer, 2016-05)
We discuss possibilities of measuring CP violation in the Two-Higgs-Doublet Model by studying effects of one-loop generated $ZZZ$ and $ZWW$ vertices. We discuss a set of CP-sensitive asymmetries for $ZZ$ and $W^+W^-$ ...
Journal article