Now showing items 143-162 of 769

• #### The effect of calcite minerale on hydrate stability and CO2 adsorption ﻿

(The University of Bergen, 2011-06-01)
The background for conducting this study are the huge unused possibilities for storage of large quantities of the greenhouse gas carbon dioxide in old or depleted oil reservoirs or deep brackish aquifers. The method of ...
Master thesis
• #### Effect of Combined Low Salinity and Surfactant Injection on Oil Recovery in Aged Bentheimer Sandstones at Different Temperatures ﻿

(The University of Bergen, 2012-06-01)
A moderate increase in crude oil recovery by reduction in salinity of the injection brine has been observed for numerous laboratory core flood experiments. The underlying mechanisms behind increased recovery by low ...
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
• #### The effect of energetic electron precipitation on the nitric oxide density in the lower thermosphere ﻿

(The University of Bergen, 2007-02-09)
Doctoral thesis
• #### 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
• #### The Effect of Fluid Viscosity on Hydrocyclone Performance: Design and Commissioning of an Experimental Rig and Results ﻿

(The University of Bergen, 2011-06-30)
Hydrocyclones are used in the process industry for a variety of applications. The product streams from the wells in the oil and gas industry include produced sand, which have to be removed as it interferes with control ...
Master thesis
• #### Effect of ultraviolet radiation on phytoplankton photosynthesis measured using fiber-optical oxygen sensors. ﻿

(The University of Bergen, 2009-12-08)
Since the discovery of the Antarctic ozone hole' many studies have been conducted to determine the effect of UV radiation on photosynthetic rate of phytoplankton. It is accepted now that increased levels of UV radiation ...
Master thesis
• #### 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
• #### Effects of dead time losses on terrestrial gamma ray flash measurements with the Burst and Transient Source Experiment ﻿

(American Geophysical Union, 2010-05-05)
Peer reviewedJournal article
• #### Effects of nonlinear sound propagation in fisheries research ﻿

(The University of Bergen, 2007-03-30)
Doctoral thesis
• #### Effects of salinity on hydrate stability and implications for storage of CO2 in natural gas hydrate reservoirs ﻿

(Elsevier, 2009-02)
The win-win situation of CO2 storage in natural gas hydrate reservoirs is attractive for several reasons in addition to the associated natural gas production. Since both pure CO2 and pure methane form structure I hydrate ...
Journal article
• #### Eksperimentell studie av vannbasert EOR i karbonatreservoarer ﻿

(The University of Bergen, 2009-11-20)
Ulike metoder for økt oljeutvinning (EOR, eng. Enhanced Oil Recovery) har blitt utviklet og anvendt for å forbedre effektiviteten av konvensjonell vannflømming. Hensikten med EOR er å bedre den mikroskopiske fortrengnin ...
Master thesis
• #### Electric spark energy required for igniting transient clouds of lycopodium dust in air using inherent dust cloud triggering of spark discharge. Influences of selected experimental parameters. ﻿

(The University of Bergen, 2016-12-01)
The catastrophic outcome of accidental explosions to humans and property has caused an increased need for new knowledge in order to prevent and mitigate the effects of such events. Amongst other substances, a wide range ...
Master thesis
• #### Electric spark ignition of sensitive dust clouds in the sub 1 mJ range ﻿

(The University of Bergen, 2006-05-30)
This thesis describes a study of the minimum ignition energy (MIE) of easily ignitable dust clouds in air. The MIE is a central parameter when assessing the risk involved when handling combustible dusts. Current standard ...
Doctoral thesis
• #### Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data ﻿

(Springer, 2014-10-01)
This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb −1 of LHC proton–proton collision data taken at centre-of-mass energies of s√=7 and 8 TeV. The reconstruction ...
Journal article
• #### Elektronikk for mangekanalsutlesning fra et Posisjonsfølsomt Fotomultiplikatorrør ﻿

(The University of Bergen, 2001)
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
• #### Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb–Pb collisions at $\sqrt{s_{\rm NN}}= 2.76$ TeV ﻿

(Springer, 2016-09)
The elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity ($|y| < 0.7$) is measured in Pb–Pb collisions at $\sqrt{s_{\rm NN}}= 2.76$ TeV with ALICE at the LHC. The particle azimuthal distribution with ...
Journal article
• #### Elliptic flow of identified hadrons in Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 2.76 TeV ﻿

(Springer, 2015-06-29)
The elliptic flow coefficient ($v_{2}$) of identified particles in Pb--Pb collisions at $\sqrt{s_\mathrm{{NN}}} = 2.76$ TeV was measured with the ALICE detector at the LHC. The results were obtained with the Scalar Product ...
Journal article
• #### Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV ﻿

(Elsevier, 2016-02)
The elliptic flow, $v_{2}$, of muons from heavy-flavour hadron decays at forward rapidity ($2.5 < y < 4$) is measured in Pb--Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with the ALICE detector at the LHC. The scalar ...
Journal article