Now showing items 21-40 of 436

• #### Modelling Demyelination and Neuronal Loss from Diffusion Weighted Magnetic Resonance Images in an Experimental Model of Multiple Sclerosis ﻿

(The University of Bergen, 2015-05-31)
This master project is an application of an advanced biophysical model of water diffusion in tissue to asses neuronal microstructure of mouse and rat brain and, in particular, to find potential imaging markers of demyelination ...
Master thesis
• #### An Experimental Study of Methane Hydrates in Sandstone Cores ﻿

(The University of Bergen, 2015-05-31)
Natural gas hydrates exist in large quantities around the world, located in the subsurface of permafrost and oceanic environments. Future energy harvest from production of methane gas encapsulated in natural gas hydrates ...
Master thesis
• #### Observations of planetary waves in the mesosphere-lower thermosphere during stratospheric warming events ﻿

(Copernicus PublicationsEuropean Geosciences Union, 2015-05-04)
This study investigates the effect of stratospheric sudden warmings (SSWs) on planetary wave (PW) activity in the mesosphere–lower thermosphere (MLT). PW activity near 95 km is derived from meteor wind data using a chain ...
Journal article
• #### Developing calibrated ultrasound equipment for sonoporation research ﻿

(The University of Bergen, 2015-03-29)
Sonoporation is the transient formation of pores in cells, due to the application of ultrasound or ultrasound in combination with microbubbles. This increases drug uptake. Nevertheless, the ideal parameters for sonoporation ...
Master thesis
• #### Reactive transport modelling of hydrate phase transition dynamics in porous media ﻿

(The University of Bergen, 2015-03-27)
Gas hydrate is believed to be so abundant in nature that some estimates suggest it contains more than two times equivalent energy of the whole fossil fuels on Earth. Besides, reservoir hydrates have other important aspects ...
Doctoral thesis
• #### Development and data analysis of a position detector for AEḡIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) ﻿

(The University of Bergen, 2015-03-13)
AEḡIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) is an antimatter experiment based at CERN, the European Organization for Nuclear Research, whose goal is to carry out the first direct measurement of the ...
Doctoral thesis
• #### Pore-level foam generation and flow for mobility control in fractured systems ﻿

(Elsevier, 2015-03-05)
Pore-level foam generation, propagation, and sweep efficiency were visualized using silicon-wafer micromodels with an accurate representation of sandstone pore structure, grain shapes and sizes based on thin-section analysis. ...
Journal article
• #### Multiplicity dependence of jet-like two-particle correlations in p-Pb collisions at $\sqrt{s_NN}$ = 5.02 TeV ﻿

(Elsevier, 2015-02-04)
Two-particle angular correlations between unidentified charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum ...
Journal article
• #### The effect of fluid viscosity and geometry on hydrocyclone performance ﻿

(The University of Bergen, 2015-02-02)
Hydrocyclones have been widely used throughout industries for separating sand particles of various sizes and shape from fluids. Producing petroleum resources includes amounts of water, which contain different amounts of ...
Master thesis
• #### Current systems associated with Non-Conjugate Aurora ﻿

(The University of Bergen, 2015-01-20)
The main goal of this Thesis is twofold. First, we want to develop a solid method for identifying the field aligned currents related to the specific non-conjugate auroral features identified by Reistad et al. [2013] and ...
Master thesis
• #### A Lagrangian study of liquid flow in a reverse-flow hydrocyclone using positron emission particle tracking ﻿

(Springer, 2015-01-10)
In this study the liquid flow in a reverse-flow hydrocyclone is studied experimentally using the Lagrangian approach. Resin beads with densities that are close to the density of the liquid in which they move, i.e. ...
Journal article
• #### Pore-to-Core Laboratory Upscaling and Visualization of Enhanced Oil Recovery and CO2 Storage ﻿

(The University of Bergen, 2015-01-09)
The global energy demand increases, and the need for hydrocarbon reserve growth is evident. The maturation of hydrocarbon formations worldwide combined with declining rate of major oil and gas discoveries, have caused a ...
Doctoral thesis
• #### Cutoff latitude variation during solar proton events: Causes and consequences ﻿

(WileyAmerican Geophysical Union, 2015-01)
To accurately quantify the effect of solar proton events (SPEs) on the atmosphere requires a good estimate of the particle energy deposition in the middle atmosphere (60–100 km) and how the energy is distributed globally. ...
Journal article
• #### Measurement of Higgs boson production in the diphoton decay channel in $pp$ collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector ﻿

(American Physical Society, 2014-12-24)
A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 5.4 fb$^{-1}$ of proton-proton collisions data at $\sqrt{s}=7$ TeV and 20.3 fb$^{-1}$ at ...
Journal article
• #### High voltage electrical discharges in the laboratory ﻿

(The University of Bergen, 2014-12-18)
A new phenomenon called terrestrial gamma-ray flashes (TGFs) was discovered early in the 1990s by the NASA satellite Compton Gamma-Ray Observatory. The short-duration bursts of highly energetic gamma-rays are caused by ...
Master thesis
• #### Rotation and Turbulence in Peripheral Heavy Ion Collisions ﻿

(The University of Bergen, 2014-12-16)
In our computational fluid dynamics (CFD) calculations the Kelvin-Helmholtz instability (KHI) starts to develop in peripheral collisions. At high energies the shear viscosity of the Quark Gluon Plasma (QGP) flow is ...
Doctoral thesis
• #### Freeze-out radii extracted from three-pion cumulants in pp, p-Pb and Pb-Pb collisions at the LHC ﻿

(Elsevier, 2014-12-12)
In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose–Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted ...
Journal article
• #### Search for contact interactions and large extra dimensions in the dilepton channel using proton–proton collisions at √s=8 TeV with the ATLAS detector ﻿

(Springer Berlin Heidelberg, 2014-12-11)
A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton–proton collision dataset ...
Journal article
• #### Comprehensive measurements of $t$-channel single top-quark production cross sections at $\sqrt{s} = 7$ TeV with the ATLAS detector ﻿

(American Physical Society, 2014-12-11)
This article presents measurements of the $t$-channel single top-quark ($t$) and top-antiquark ($\bar{t}$) total production cross sections $\sigma(tq)$ and $\sigma(\bar{t}q)$, their ratio $R_{t}=\sigma(tq)/\sigma(\bar{t}q)$, ...
Journal article
• #### Measurement of distributions sensitive to the underlying event in inclusive Z-boson production in pp collisions at √s = 7 TeV with the ATLAS detector ﻿

(Springer Berlin Heidelberg, 2014-12-10)
A measurement of charged-particle distributions sensitive to the properties of the underlying event is presented for an inclusive sample of events containing a TeX -boson, decaying to an electron or muon pair. The measurement ...
Journal article