Now showing items 21-40 of 436

• Characterization of Associating Polymer (AP) Solutions. Influences on flow behavior by the degree of hydrophobicity and salinity ﻿

(The University of Bergen, 2013-06-02)
The most applied polymer today for chemical improved oil recovery (IOR) processes, such as polymer flood and/or polymer well treatments, is the synthetic partially hydrolyzed polyacrylamide (HPAM) and its derivatives. ...
Master thesis

(The University of Bergen, 2013-09-11)
It is surprisingly problematic to to accurately measure light in the laboratory. Even more so when measuring in the field. There are lots of areas where measuring light spectrum and irradiance outside a laboratory is ...
Master thesis
• Charged Higgs boson searches and SemiConductor Tracker commissioning for the ATLAS experiment ﻿

(The University of Bergen, 2007-06-21)
The ATLAS (A Toroidal Lhc ApparatuS) experiment is one of four major experiments presently being installed at the upcoming Large Hadron Collider (LHC) at the European Centre for Nuclear Research (CERN) outside Geneva. In ...
Doctoral thesis
• Charged-particle multiplicities in $pp$ interactions at $\sqrt{s}$ = 900 GeV measured with the ATLAS detector at the LHC ﻿

(Elsevier, 2010-04)
The first measurements from proton-proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy ...
Journal article
• Charged-particle multiplicity measurement in proton–proton collisions at √s = 0.9 and 2.36 TeV with ALICE at LHC ﻿

(Springer, 2010-07-12)
Charged-particle production was studied in proton–proton collisions collected at the LHC with the ALICE detector at centre-of-mass energies 0.9 TeV and 2.36 TeV in the pseudorapidity range |η|<1.4. In the central region ...
Peer reviewedJournal article
• Charged-particle multiplicity measurement in proton–proton collisions at √s = 7 TeV with ALICE at LHC ﻿

(Springer, 2010-08-03)
The pseudorapidity density and multiplicity distribution of charged particles produced in proton–proton collisions at the LHC, at a centre-of-mass energy Ös=7s=7 TeV, were measured in the central pseudorapidity region ...
Peer reviewedJournal article
• Climatology of aerosol optical properties in Northern Norway and Svalbard ﻿

(European Geosciences Union, 2012-12-07)
We present comparisons between estimates of the aerosol optical thickness and the °Angstr¨om exponent in Northern Norway and Svalbard based on data from AERONET stations at Andenes (69 ◦N, 16 ◦E, 379 m altitude) and ...
Peer reviewedJournal article
• Cluster observations of a field aligned current at the dawn flank of a bursty bulk flow ﻿

(European Geosciences Union, 2007-06-29)
This article describes observations of a bursty bulk flow (BBF) in the outer central plasma sheet. The observations are made with the Cluster satellites, located approximately 19RE downtail, close to the midnight sector ...
Journal articlePeer reviewed
• CO2 Foam Stabilization with Nanoparticles and EOR in Fractured Carbonate Systems ﻿

(The University of Bergen, 2015-06-18)
This thesis is a part of an ongoing study of CO2 foam mobility control in the Reservoir Physics group at the Department of Physics and Technology (IFT) at the University of Bergen. The goal of this thesis was to evaluate ...
Master thesis
• CO2 Injection in Hydrate Bearing Sandstone with Excess Water ﻿

(The University of Bergen, 2013-05-31)
It has previously been shown that methane can be produced from gas hydrates by exposing it to carbon dioxide. Since CO2 is the preferred hydrate former below 10 °C it will spontaneously replace CH4 as the guest molecule ...
Master thesis
• CO2 injeksjon for økt oljeutvinning i kalk ﻿

(The University of Bergen, 2013-05-31)
Denne masteroppgaven studerer CO2 injeksjon for økt oljeutvinning i kalkstein, og hvordan parametere som sprekker, initielt vann og mobilitetskontroll påvirker oljeproduksjon. Det ble gjennomført 15 eksperimenter med ...
Master thesis
• CO2-injeksjon i Utsiraformasjonen - et studie av CO2/vann-kontakten og temperaturavhengige parametere ﻿

(The University of Bergen, 2012-06-01)
Since the start-up in 1996 over 15 Mt CO2 have been injected in to the geological formation Utsira at the commercial CO2 storage project Sleipner. The propagation of CO2 in the reservoir has been monitored by time-lapse ...
Master thesis
• Combustion of Gas in Closed, Interconnected Vessels: Pressure Piling ﻿

(The University of Bergen, 2004)
This thesis is the documentation of a study of gas explosions in closed, interconnected vessels. Explosions within such vessels is strongly affected by the characteristics of the geometry, and can, under given conditions, ...
Master thesis
• A Comparative Study on the Influence of Obstacles on Flame Propagation in Dust and Gas Mixtures. An experimental study of confined and vented scenarios in a 3.6 meter flame acceleration tube ﻿

(The University of Bergen, 2012-06-01)
This thesis describes an experimental investigation of flame propagation in a 3.6-meter Flame Acceleration Tube (FAT) with square 0.27m x0.27m cross section. The experiments in the FAT took place at the premises of ...
Master thesis
• Comparison of planar and 3D silicon pixel sensors used for detection of low energy antiprotons ﻿

(IEEE, 2014-12)
The principle aim of the AEḡIS experiment at CERN is to measure the acceleration of antihydrogen due to Earth’s gravitational field. This would be a test of the Weak Equivalence Principle, which states that all bodies ...
Journal article
• Comparison of residual oil cluster size distribution, morphology and saturation in oil-wet and water-wet sandstone ﻿

(Elsevier, 2012-06-01)
We imaged an oil-wet sandstone at residual oil saturation (Sor) conditions using X-ray micro-tomography with a nominal voxel size of (9 μm)3 and monochromatic light from a synchrotron source. The sandstone was rendered ...
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
• Condensation of water on rust surfaces, and possible implications for hydrate formation in pipelines ﻿

(The University of Bergen, 2011-06-01)
The threat of climate change has put the spotlight on the increase in carbon emissions and possible methods to attenuate it. As a consequence of this, oil and gas companies have started to consider both how to reduce ...
Master thesis
• Confining the angular distribution of terrestrial gamma ray flash emission ﻿

(American Geophysical Union, 2011-11-11)
Peer reviewedJournal article
• Conformance Control for Enhanced Oil Recovery in Fractured Reservoirs ﻿

(The University of Bergen, 2014-09-19)
Doctoral thesis