Recent Submissions

  • Investigation of Low Salinity Polymer and Surfactant Flooding in Carbonate Reservoir at Reservoir Conditions 

    El-Khatib, Mohamed Fahmi (The University of Bergen, 2018-04-20)
    It is estimated that 40-60% of the world’s total hydrocarbon production is from carbonate rocks [1]. Carbonate rocks contain the world`s largest fields in the Middle East (i.e., Ghawar Field, Saudi Arabia). Waterflooding ...
    Master thesis
  • Teknologi for MRI av hjernens funksjon og biokjemiske sammensetning 

    Linge, Jørn (The University of Bergen, 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 ...
    Master thesis
  • On the timing between terrestrial gamma ray flashes, radio atmospherics, and optical lightning emission 

    Gjesteland, Thomas; Østgaard, Nikolai; Bitzer, Phillip; Christian, Hugh J. (American Geophysical Union, 2017)
    On 25 October 2012 the Reuven Ramaty High Energy Solar Spectroscope Imager (RHESSI) and the Tropical Rainfall Measuring Mission (TRMM) satellites passed over a thunderstorm on the coast of Sri Lanka. RHESSI observed a ...
    Journal article
  • Teoretisk- och Praktisk Analys av Avsäkrings- och Fackelsystemet på Isokrackeranläggningen, Preemraff Lysekil 

    Marston, Emma Ulrika (The University of Bergen, 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 ...
    Master thesis
  • Optimization, evaluation and application of EEP measurements in the presence of contaminating protons 

    Haderlein, Astrid (The University of Bergen, 2017)
    It is well known that energetic particles can penetrate deep into the atmosphere and initiate a chain of chemical reactions, ultimately leading to enhanced production rates of HOx and NOx molecules and the depletion of ...
    Master thesis
  • How Often Do Thermally Excited 630.0 nm Emissions Occur in the Polar Ionosphere? 

    Kwagala, Norah Kaggwa; Oksavik, Kjellmar; Lorentzen, Dag Arne; Johnsen, Magnar Gullikstad (American Geophysical Union, 2018-01)
    This paper studies thermally excited emissions in the polar ionosphere derived from European Incoherent Scatter Svalbard radar measurements from the years 2000–2015. The peak occurrence is found around magnetic noon, where ...
    Journal article
  • GPS scintillations associated with cusp dynamics and polar cap patches 

    Jin, Yaqi; Moen, Jøran Idar; Oksavik, Kjellmar; Spicher, Andres; Clausen, Lasse Boy Novock; Miloch, Wojciech Jacek (EDP Sciences, 2017)
    This paper investigates the relative scintillation level associated with cusp dynamics (including precipitation, flow shears, etc.) with and without the formation of polar cap patches around the cusp inflow region by the ...
    Journal article
  • Dynamic properties of throat aurora revealed by simultaneous ground and satellite observations 

    Chen, Xiangcai; Han, Desheng; Lorentzen, Dag Arne; Oksavik, Kjellmar; Moen, Jøran Idar; Baddeley, Lisa (American Geophysical Union, 2017-03)
    Throat aurora is defined as south-north aligned auroral arcs equatorward of the dayside cusp aurora and was suggested to be the results of cold magnetospheric plasma interaction with magnetopause reconnection, but its ...
    Journal article
  • Simultaneous observations of traveling convection vortices: Ionosphere-thermosphere coupling 

    Kim, Hyomin; Lessard, Marc R.; Jones, Sarah L.; Lynch, Kristina A.; Fernandes, Philip A.; Aruliah, Anasuya L.; Engebretson, Mark J.; Moen, Jøran Idar; Oksavik, Kjellmar; Yahnin, Alexander G.; Yeoman, Timothy K. (American Geophysical Union, 2017-05)
    We present simultaneous observations of magnetosphere-ionosphere-thermosphere coupling over Svalbard during a traveling convection vortex (TCV) event. Various spaceborne and ground-based instruments made coordinated ...
    Journal article
  • Λ polarization in an exact fluid dynamical model for heavy-ion collisions 

    Xie, Yilong (EPJ, 2016)
    Λ polarization is calculated in an exact analytical, rotating model based on parameters from a high resolution (3+1)D Particle-in-Cell Relativistic hydrodynamics calculation. The polarization is attributed to effects ...
    Journal article
  • Global Λ polarization in high energy collisions 

    Xie, Yilong; Wang, Dujuan; Csernai, László P. (American Physical Society, 2017-03-14)
    With a Yang-Mills flux-tube initial state and a high-resolution (3+1)D particle-in-cell relativistic (PICR) hydrodynamics simulation, we calculate the Λ polarization for different energies. The origination of polarization ...
    Journal article
  • Λ polarization in peripheral collisions at moderately relativistic energies 

    Xie, Y. L.; Bleicher, M.; Stöcker, H.; Wang, D. J.; Csernai, L. P. (American Physical Society, 2016-11-21)
    The polarization of Λ hyperons from relativistic flow vorticity is studied in peripheral heavy ion reactions at FAIR and NICA energies, just above the threshold of the transition to the quark-gluon plasma. Previous ...
    Journal article
  • Λ polarization in an exact rotating and expanding fluid dynamical model for peripheral heavy ion reactions 

    Xie, Yilong; Glastad, Robert C.; Csernai, László P. (American Physical Society, 2015-12-02)
    We calculate the Λ polarization in an exact analytical, rotating model based on parameters extracted from a high resolution (3+1)D particle-in-cell relativistic hydrodynamics calculation. The polarization is attributed to ...
    Journal article
  • Rotation and Polarization in Heavy Ion Collisions 

    Xie, Yilong (The University of Bergen, 2017-12-19)
    Doctoral thesis
  • Magnetic Resonance Imaging of Hydrate Phase Transitions in Sediments 

    Veland, Veronica Flæsland (The University of Bergen, 2017-12-21)
    Natural gas hydrates, simplified described as gas compressed in ice, are a substance existing in large quantities around the world. Their existence requires elevated pressures and low temperature. They are therefore found ...
    Master thesis
  • Anisotropic reflectance of Arctic snow and sea ice 

    Henningsen, Hanne Starfish (The University of Bergen, 2017-12-21)
    We present an investigation of the angular distribution of reflected light on snow and sea ice, for three selected wavelengths; 500, 800 and 1100 nm. Our analysis covers how the angular reflectance distribution is affected ...
    Master thesis
  • Mass Ordering of Third Generation Sleptons in a Trilinear-Augmented Gaugino Mediated Supersymmetry-Breaking Scenario 

    Heum, Hans Waardal (The University of Bergen, 2017-12-21)
    In this thesis, we are exploring the particle spectrum of trilinear-augmented gaugino mediation. In particular, we calculate the masses of the stau and the tau sneutrino in a section of the parameter space in which one is ...
    Master thesis
  • Videreutvikling av instrumentering - for studier av mikroalgers vertikalmigrasjon under ulike lysforhold 

    Silgjerd, Ørjan (The University of Bergen, 2017)
    Mikroalger er viktige som primærprodusent i økosystem, både som næring til andre organismer men også som oksygenprodusent. Endringer av miljøforhold som lysintensitet, bølgelengde og tilgang på næringsstoffer, vil påvirke ...
    Master thesis
  • Application of MRI in studies of tetrahydrofuran hydrates in quartz sand at atmospheric pressure 

    Tetlie, Emilie Sørfonden (The University of Bergen, 2017-12-06)
    Natural gas hydrates form under low temperatures and high pressures. They can be found in abundance in permafrost environments and under the sea floor, where the temperature and pressure conditions ensure their stability. ...
    Master thesis
  • Centrality, rapidity and transverse momentum dependence of the J/$\psi$ suppression in Pb-Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV 

    Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Langøy, Rune; Lien, Jørgen; Lønne, Per-Ivar; Nystrand, Joakim; Rehman, Attiq ur; Røhrich, Dieter; Skjerdal, Kyrre; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Arsene, Ionut Christian; Bätzing, Paul Christoph; Dordic, Olja; Eyyubova, Gyulnara; Lindal, Svein; Milosevic, Jovan; Qvigstad, Henrik; Richter, Matthias Rudolph; Røed, Ketil; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Zhao, Chengxin; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Ahn, Sul-Ah; Ajaz, Muhammad; Akindinov, Alexander; Aleksandrov, Dimitry; Alessandro, Bruno; Alici, Andrea; Alkin, Anton; ALICE, Collaboration (Elsevier, 2014-06)
    The inclusive J/$\psi$ nuclear modification factor ($R_{AA}$) in Pb-Pb collisions at $\sqrt{s_{NN}}$=2.76TeV has been measured by ALICE as a function of centrality in the $e^+e^-$ decay channel at mid-rapidity |y| < 0.8 ...
    Journal article

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