Browsing Department of Physics and Technology by Title
Now showing items 2117-2136 of 2295
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Surface Chemistry Study of Low Salinity Waterflood
(Master thesis, 2013-06-03)There is increasing evidence that injecting low salinity brines has a significant impact on the amount of oil recovered, but the exact mechanism by which this occurs is an unsettled issue, and is supposed to be a cause of ... -
Swampland de Sitter conjectures in no-scale supergravity models
(Journal article; Peer reviewed, 2021)It is challenging to construct explicit and controllable models that realize de Sitter solutions in string compactifications. This difficulty is the main motivation for the refined de Sitter conjecture and the trans-Planckian ... -
Swarm in situ observations of F region polar cap patches created by cusp precipitation
(Peer reviewed; Journal article, 2015-02-26)High-resolution in situ measurements from the three Swarm spacecraft, in a string-of-pearls configuration, provide new insights about the combined role of flow channel events and particle impact ionization in creating F ... -
Symmetries and mass degeneracies in the scalar sector
(Peer reviewed; Journal article, 2019-01-04)We explore some aspects of models with two and three SU(2) scalar doublets that lead to mass degeneracies among some of the physical scalars. In Higgs sectors with two scalar doublets, the exact degeneracy of scalar masses, ... -
Symmetries of the 2HDM: an invariant formulation and consequences
(Journal article; Peer reviewed, 2021)Symmetries of the Two-Higgs-Doublet Model (2HDM) potential that can be extended to the whole Lagrangian, i.e. the CP-symmetries CP1, CP2, CP3 and the Higgs-family symmetries Z2, U(1) and SO(3) are discussed. Sufficient and ... -
Symmetry and mass degeneration in multi-Higgs-doublet models
(Peer reviewed; Journal article, 2011-07-05)We investigate possible symmetry properties of the scalar sector of Multi-Higgs-Doublet Models, and, to some extent, the generalization of such models to gauge groups other than SU(2)_L × U(1)_Y . In models with C (charge ... -
Synergy of Nanoparticles and Surfactants for CO2 Foam Enhanced Oil Recovery and CO2 Storage in Carbonates
(Master thesis, 2018-06-20)This experimental thesis is a part of an ongoing CO2-foam project lead by the Reservoir Physics group at the Department of Physics and Technology, University of Bergen. The main thesis objective was to investigate the ... -
System of evolution equations for quark and gluon jet quenching with broadening
(Journal article; Peer reviewed, 2022)We propose a system of evolution equations that describe in-medium time-evolution of transverse-momentum-dependent quark and gluon fragmentation functions. Furthermore, we solve this system of equations using Monte Carlo ... -
System simulations for the ALICE ITS detector upgrade
(Journal article; Peer reviewed, 2020)Abstract The ALICE experiment at the CERN LHC will feature several upgrades for Run 3, one of which is a new Inner Tracking System (ITS). The ITS upgrade is currently under development and commissioning, and will be ... -
System-size dependence of the charged-particle pseudorapidity density at \(\sqrt {s_{NN}}\) = 5.02 TeV with ALICE
(Peer reviewed; Journal article, 2017-11)We present the charged-particle pseudorapidity density in pp, p–Pb, and Pb–Pb collisions at sNN=5.02 TeV over a broad pseudorapidity range. The distributions are determined using the same experimental apparatus and ... -
A systematic approach for calibrating a Monte Carlo code to a treatment planning system for obtaining dose, LET, variable proton RBE and out-of-field dose
(Journal article; Peer reviewed, 2023)Objective. While integration of variable relative biological effectiveness (RBE) has not reached full clinical implementation, the importance of having the ability to recalculate proton treatment plans in a flexible, ... -
A systematic investigation of polymer influence on core scale wettability aided by positron emission tomography imaging
(Journal article; Peer reviewed, 2022)Polymers have been used as viscosifying agents in enhanced oil recovery applications for decades, but their influence on rock surface wettability is rarely discussed relative to its importance: wettability largely controls ... -
Systematic studies of correlations between different order flow harmonics in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 2.76 TeV
(Peer reviewed; Journal article, 2018-02)The correlations between event-by-event fluctuations of anisotropic flow harmonic amplitudes have been measured in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 2.76 TeV with the ALICE detector at the LHC. The results are ... -
Tagging boosted hadronic objects with dynamical grooming
(Journal article; Peer reviewed, 2020)We evaluate the phenomenological applicability of the dynamical grooming technique, introduced by Y. Mehtar-Tani, A. Soto-Ontoso, and K. Tywoniuk [Phys. Rev. D 101, 034004 (2020)], to boosted W and top tagging at LHC ... -
Taxonomy through the lens of neutral helium microscopy
(Peer reviewed; Journal article, 2019-02-14)The field of taxonomy is critically important for the identification, conservation, and ecology of biological species. Modern taxonomists increasingly need to employ advanced imaging techniques to classify organisms according ... -
Teaching Robust Argumentation Informed by the Nature of Science to Support Social Justice. Experiences from Two Projects in Lower Secondary Schools in Norway
(Chapter, 2020)This chapter suggests a set of design principles for science curricula that will enable students to produce evidence-based arguments expressing views related to their own interests. It is based on the assumption that the ... -
Teknologi for MRI av hjernens funksjon og biokjemiske sammensetning
(Master thesis, 2018-04-07)This thesis is divided into two parts. The first part addresses synchronisation between the rate of frequency the MR system used for fMRI examinations at Haukeland universitetssjukehus operates on (10 Mhz) and the sampling ... -
Temperatur og salinitets påvirkning på viskositeten til delvis hydrolyserte polymer med og uten hydrofobe substituenter
(Master thesis, 2017-09-15)I denne oppgaven sammenlignes viskositetsutviklingen som funksjon av temperatur for to hydrofobisk modifiserte polyelektrolytter og en polyelektrolytt uten hydrofobe substituenter. Målingene er utført ved to ulike ... -
Temperature induced color change in gold nanoparticle arrays: Investigating the annealing effect on the localized surface plasmon resonance
(Peer reviewed; Journal article, 2016)The localized surface plasmon resonance (LSPR) effect in metal nanoparticles is important for a range of applications, including photovoltaics and sensors. The actual LSPR effect is difficult to predict, because it can ... -
Temperature-Dependent Bending Rigidity of AB-Stacked Bilayer Graphene
(Journal article; Peer reviewed, 2021)The change in bending rigidity with temperature κ(T) for 2D materials is highly debated: theoretical works predict both increase and decrease. Here we present measurements of κ(T), for a 2D material: AB-stacked bilayer ...