Now showing items 21-40 of 652

• #### Monte Carlo based comparison of constant vs. variable RBE for proton therapy patients ﻿

(The University of Bergen, 2017-06-21)
Around the world, the use of protons as an alternative to photons radiation therapy of cancer is becoming more widespread. The motivations for this is that protons enable a reduction of the radiation dose to health tissue ...
Master thesis
• #### A new population of Terrestrial Gamma-ray Flashes ﻿

(The University of Bergen, 2017-06-21)
Terrestrial Gamma-ray Flashes (TGFs) consist of large numbers of highenergy photons produced in thunderstorms in connection with the lightning flash, and are the most energetic photon phenomenon naturally occurring ...
Master thesis
• #### Foam Generation and Flow in Fractures with Different Aperture ﻿

(The University of Bergen, 2017-06-20)
This experimental thesis investigate foam generation and flow properties in real, rough-walled fractures, through impermeable marble core plugs. A range of fracture apertures was investigated, denoted open, partially open ...
Master thesis
• #### A Numerical Study of Exercise Induced Laryngeal Obstruction using Fluid-Structure Interaction ﻿

(The University of Bergen, 2017-06-20)
During inhalation, the pressure in the lungs decreases relative to the atmospheric air pressure, so that the atmospheric air is sucked into the lungs. During strenuous exercise, exposed individuals may experience that the ...
Master thesis
• #### An Experimental Study of Foam Flow in Water Saturated Porous Media ﻿

(The University of Bergen, 2017-06-20)
The amount of greenhouse gases in the atmosphere has increased significantly the last 250 years, causing a global temperature rise. CO2 emissions from fossil fuel combustion is a major contributor to greenhouse gas emissions, ...
Master thesis
• #### Antennelse av oksiderbar røykgass fra ulmebrann i et lukket miljø. Utvikling av eksperimentelt oppsett ﻿

(The University of Bergen, 2017-06-20)
Oppgaven er todelt; første del beskriver utformingen av det eksperimentelle oppsettet, andre del er eksperimentell og tar for seg antennelse av oksiderbar røykgass i et lukket miljø. Det var stilt følgende krav til ...
Master thesis
• #### Evaluation and design of readout electronics for electron and proton detectors ﻿

(The University of Bergen, 2017-06-16)
Researchers at Birkeland center of space science have initiated a project where the precipitating flux of energetic electrons and protons into the middle atmosphere will be measured. An instrument will be attached to a ...
Master thesis
• #### Analysis of 3D Pixel Detectors for the ATLAS Inner Tracker Upgrade ﻿

(The University of Bergen, 2017-06-16)
The silicon 3D pixel detector represent a detector technology that has a higher radiation tolerance compared to the conventional planar pixel detectors. This detector technology is one of the technologies proposed to be ...
Master thesis
• #### Design of High-Speed Digital Readout System for Use in Proton Computed Tomography ﻿

(The University of Bergen, 2017-06-16)
A team at the University of Bergen is developing a proton computed tomography (CT) scanner prototype. The proton CT (pCT) scanner will introduce fewer insecurities than conventional photon CT when analyzing the location ...
Master thesis
• #### Rheological properties of hydrophobically modified anionic polymers: The effect of varying salinity in polymer solution ﻿

(The University of Bergen, 2017-06-16)
A new class of polymers, named ‘hydrophobically modified water-soluble polymers’, has been developed as an alternative to the more commonly used polyelectrolytes in enhanced oil recovery (EOR) applications. These polymers ...
Master thesis
• #### Energetic particle precipitation and polar surface air temperature variability ﻿

(The University of Bergen, 2017-06-16)
Energetic Particle Precipitation (EPP) is known to have an impact on the chemical and thermal properties of the middle and upper atmosphere. Recent studies have also found ground level temperature anomalies in the polar ...
Master thesis
• #### A Silicon Photomultiplier Based Readout System For A Cosmic Muon Telescope; Design And Implementation ﻿

(The University of Bergen, 2017-06-16)
The Cosmic Ray Telescope (CRT) is a 4 m^2 scintillator detector segmented into 16 slabs with dimensions of 25100 cm^2. The detector is located at the Department of Physics, University of Bergen, and is intended primarily ...
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
• #### Energy, Entropy and Sustainable Development with Focus on Nuclear Fusion ﻿

(The University of Bergen, 2017-06-13)
The results of this thesis are twofold. First, based on the fundamental work of Ervin Schrödinger on sustainable development and its relation to entropy, we develop a program for discussing both the kinetic and configurational ...
Master thesis
• #### Optisk goniometer for optimalisering av retningsbestemt solenergi ﻿

(The University of Bergen, 2017-06-13)
Det er et økende fokus på fornybar energi og bærekraftig matproduksjon, det vil derfor være nyttig med teknologi som kan føre til økt effektivitet i produksjon av dette. Utnyttelse av solenergi er et felt som er mye brukt, ...
Master thesis
• #### Monte Carlo simulations of neutron doses from pencil beam scanning proton therapy ﻿

(The University of Bergen, 2017-06-13)
Introduction: Proton therapy is a more advanced form of radiotherapy that allows better dose conformity to the tumor and a homogeneous dose distribution. A side effect however is the production of secondary neutrons generated ...
Master thesis
• #### Nano to Micro Scale Modeling of Hydrate Phase Transition Kinetics ﻿

(The University of Bergen, 2017-05-23)
Doctoral thesis
• #### D0-electron correlations in p–Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV ﻿

(The University of Bergen, 2017-04-21)
In collisions of lead nuclei at the Large Hadron Collider (LHC) at CERN, a state of matter called Quark-Gluon Plasma (QGP) is formed, where quarks and gluons are no longer confined into hadrons. Heavy-flavour quarks, ...
Doctoral thesis
• #### Learning science in interactive exhibitions. Frameworks for design and evaluation of material for exploratory learning experiences ﻿

(The University of Bergen, 2017-03-10)
This study addresses utilization of interactive science exhibitions as resources that support students&rsquo; progress towards conceptual understanding of science. Informed by previous empirical studies related to our area ...
Doctoral thesis
• #### Magnetic coordinate systems ﻿

(Springer, 2017-03)
Geospace phenomena such as the aurora, plasma motion, ionospheric currents and associated magnetic field disturbances are highly organized by Earth’s main magnetic field. This is due to the fact that the charged particles ...
Journal article