Browsing Department of Physics and Technology by Title

Now showing items 2117-2136 of 2291

    • Symmetries of the 2HDM: an invariant formulation and consequences 

      Ferreira, Pedro M.; Grzadkowski, Bohdan; Øgreid, Odd Magne; Osland, Per (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 

      Olaussen, Kåre; Osland, Per; Solberg, Marius Aase (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 

      Skjelsvik, Eldri Bratland (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 

      Blanco, E.; Kutak, K.; Płaczek, W.; Rohrmoser, M.; Tywoniuk, Konrad (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 

      Nesbø, Simon Voigt; Alme, Johan; Bonora, Matthias; Giubilato, Piero; Helstrup, Håvard; Lupi, Matteo; Rinella, Gianluca Aglieri; Røhrich, Dieter; Schambach, Joachim; Shahoyan, Ruben; Velure, Arild (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 

      Acharya, Shreyasi; Adam, Jaroslav; Adamová, Dagmar; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, G; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahmad, N; Ahn, SU; Alme, Johan; Altenkaemper, Lucas; Arsene, Ionut Christian; Bätzing, Paul Christoph; Djuvsland, Øystein; Dordic, Olja; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Langøy, Rune; Lardeux, Antoine Xavier; Lien, Jørgen André; Lindal, Svein; Lønne, Per-Ivar; Mahmood, Sohail Musa; Milosevic, Jovan; Nesbø, Simon Voigt; Nystrand, Joakim; Rehman, Attiq Ur; Richter, Matthias Rudolph; Røed, Ketil; Røhrich, Dieter; Skaali, Toralf Bernhard; Tambave, Ganesh Jagannath; Tveter, Trine Spedstad; Ullaland, Kjetil; Velure, Arild; Wagner, Boris; Wikne, Jon Christopher; Zhang, Hui; Zhao, Chengxin; Zhou, Zhuo; Zhu, Hongsheng; Aiola, Salvatore; Akindinov, Alexander; Alam, Sk Noor; Alba, José Luis Bazo; Aleksandrov, Dimitry; Allesandro, B.; ALICE, Collaboration (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 

      Tjelta, Johannes; Fjæra, Lars Fredrik; Ytre-Hauge, Kristian Smeland; Boer, Camilla Grindeland; Stokkevåg, Camilla Hanquist (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 

      Brattekås, Bergit; Sandnes, Martine Folgerø; Steinsbø, Marianne; Cobos Mora, Jacquelin Elizabeth (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 

      Acharya, Shreyasi; Adam, Jaroslav; Adamová, Dagmar; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahmad, Shafiq F.; Alme, Johan; Altenkaemper, Lucas; Djuvsland, Øystein; Fionda, Fiorella Maria Celeste; Lønne, Per-Ivar; Nystrand, Joakim; Rehman, Attiq ur; Røhrich, Dieter; Tambave, Ganesh Jagannath; Ullaland, Kjetil; Velure, Arild; Wagner, Boris; Zhang, Hui; Zhou, Zhuo; Zhu, Hongsheng; Arsene, Ionut Christian; Bätzing, Paul Christoph; Dordic, Olja; Lardeux, Antoine Xavier; Lindal, Svein; Mahmood, Sohail Musa; Milosevic, Jovan; Richter, Matthias Rudolph; Røed, Ketil; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Zhao, Chengxin; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Nesbø, Simon Voigt; Storetvedt, Maksim Melnik; Langøy, Rune; Lien, Jørgen André; Ahn, Sang Un; Aiola, Salvatore; Akindinov, Alexander; Al-Turany, Mohammed; Alam, Sk Noor; ALICE, Collaboration (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 

      Mehtar-Tani, Yacine; Tywoniuk, Konrad; Soto-Ontoso, Alba (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 

      Myles, Thomas A.; Eder, Sabrina Daniela; Barr, Matthew G.; Fahy, Adam; Martens, Joel; Dastoor, Paul C. (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 

      Kolstø, Stein Dankert (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 

      Linge, Jørn (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 

      Svendsen, Per Erik (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 

      Holm, Vårin Renate Andvik; Greve, Martin Møller; Holst, Bodil (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 

      Eder, Sabrina Daniela; Hellner, Simen Kaasa; Forti, Stiven; Nordbotten, Jan Martin; Manson, Joseph R.; Coletti, Camilla; Holst, Bodil (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 ...

    • Temporal characteristics and energy deposition of pulsating auroral patches 

      Humberset, Beate Krøvel; Gjerløv, Jesper; Samara, Marilla; Michell, Robert; Mann, Ian R. (Peer reviewed; Journal article, 2016-07-23)
      We present a careful statistical analysis of pulsating aurora (PA) using all-sky green line (557.7 nm) images obtained at 3.3 Hz. Six well-defined individual PA patches are identified and extracted using a contouring ...

    • The Temporal Relationship Between Terrestrial Gamma-Ray Flashes and Associated Optical Pulses From Lightning 

      Skeie, Chris Alexander Kallevik; Østgaard, Nikolai; Mezentsev, Andrey; Bjørge-Engeland, Ingrid; Marisaldi, Martino; Lehtinen, Nikolai Grigorievich; Reglero, V.; Neubert, T. (Journal article; Peer reviewed, 2022)
      We present 221 Terrestrial Gamma-ray Flashes (TGFs) and associated optical pulses observed by the Atmosphere-Space Interactions Monitor (ASIM) on board the International Space Station. The events were detected between the ...

    • Teoretisk- och Praktisk Analys av Avsäkrings- och Fackelsystemet på Isokrackeranläggningen, Preemraff Lysekil 

      Marston, Emma Ulrika (Master thesis, 2017)
      I processindustrin finns krav på att säkerhetsventiler ska finnas installerade på processenheter där trycket av någon orsak kan överskrida designtrycket av enheten. Det är av stor vikt att dessa säkerhetsventiler har ...

    • Terrestrial Gamma-Ray Flashes With Accompanying Elves Detected by ASIM 

      Bjørge-Engeland, Ingrid; Østgaard, Nikolai; Mezentsev, Andrey; Skeie, Chris Alexander Kallevik; Sarria, David Alexandre Stephan; Lapierre, Jeff; Lindanger, Anders; Neubert, Torsten; Marisaldi, Martino; Lehtinen, Nikolai Grigorievich; Chanrion, Olivier; Ullaland, Kjetil; Yang, Shiming; Genov, Georgi; Christiansen, Freddy; Reglero, Victor (Journal article; Peer reviewed, 2022)
      The Atmosphere-Space Interactions Monitor was designed to monitor Terrestrial Gamma-ray Flashes (TGFs) and Transient Luminous Events (TLEs) from space, enabling the study of how these phenomena are related. In this paper, ...