Now showing items 41-60 of 2475

    • An investigation of the correlation between interfacial properties and phase composition in the crude oil/water system 

      Rønsberg, Tina Trydal (The University of Bergen, 2015-12-01)
      Enhanced oil recovery can be obtained by flooding the reservoir with chemical fluids. However, complex interactions between the crude oil components, floodwater composition and reservoir rock minerology have to be comprehended ...
      Master thesis
    • Estimation of cold plasma outflow during geomagnetic storms 

      Haaland, Stein; Eriksson, A.; Maes, L.; Baddeley, Lisa; Barakat, A.; Chappell, R.; Eccles, V.; Johnsen, C.; Lybekk, Bjørn; Li, K.; Pedersen, A; Schunk, R.; Welling, D. (Wiley, 2015-12-01)
      Low-energy ions of ionospheric origin constitute a significant contributor to the magnetospheric plasma population. Measuring cold ions is difficult though. Observations have to be done at sufficiently high altitudes and ...
      Journal article
    • A robust linearization scheme for finite volume based discretizations for simulation of two-phase flow in porous media 

      Radu, Adrian Florin; Nordbotten, Jan Martin; Pop, Iuliu Sorin; Kumar, Kundan (Elsevier, 2015-12)
      In this work we consider a mathematical model for two-phase flow in porous media. The fluids are assumed immiscible and incompressible and the solid matrix non-deformable. The mathematical model for the two-phase flow is ...
      Journal article
    • Redox control of protein degradation 

      Pajares, Marta; Jiménez-Moreno, Natalia; Dias, Irundika H.K.; Debelec, Bilge; Vucetic, Milica; Fladmark, Kari Espolin; Basaga, Huveyda; Ribaric, Samo; Milisav, Irina; Cuadrado, Antonio (Elsevier, 2015-12)
      Intracellular proteolysis is critical to maintain timely degradation of altered proteins including oxidized proteins. This review attempts to summarize the most relevant findings about oxidant protein modification, as well ...
      Journal article
    • Postglasiale sedimentære prosesser og avsetningsmiljø i Skagerrak 

      Bergeland, Jørgen Isachsen (The University of Bergen, 2015-11-30)
      Målet med denne studien har vært å kartlegge og studere avsetninger i Skagerrak og sørøstlige deler av Norskerenna for å gi et innblikk i den postglasiale utviklingen mot et moderne sedimentasjonsmønster. I tillegg ...
      Master thesis
    • Subsea pump vibration analysis for predictive maintenance 

      Rouzbahaneh, Mahdi (The University of Bergen, 2015-11-29)
      The goal of this study is to compare vibration signals of subsea pumps from two different time periods. These signals are gathered for predictive maintenance reasons. Vibration analysis is one of the most efficient tools ...
      Master thesis
    • Atlantic halibut reovirus (AHRV): Reservoirs and transmission in culture systems. 

      Solheim, Kjetil (The University of Bergen, 2015-11-27)
      The ability to expand within the aquaculture industry is essentially based on reliable production of healthy juvenile fish. In 2013 a new aquareovirus was found to be associated with high juvenile mortality at a Norwegian ...
      Master thesis
    • A robust implicit scheme for two-phase flow in porous media 

      Kvashchuk, Anna (The University of Bergen, 2015-11-26)
      In this thesis we present a new implicit scheme for the numerical simulation of two-phase flow in porous media. Linear finite elements are considered for the spatial discretization. The scheme is based on the ...
      Master thesis
    • Thermodynamic controls of the Atlantic Niño 

      Nnamchi, Hyacinth C; Li, Jianping; Kucharski, Fred; Kang, In-Sik; Keenlyside, Noel; Chang, Ping; Farneti, Riccardo (Nature Publishing Group (NPG), 2015-11-26)
      Prevailing theories on the equatorial Atlantic Niño are based on the dynamical interaction between atmosphere and ocean. However, dynamical coupled ocean-atmosphere models poorly simulate and predict equatorial Atlantic ...
      Journal article
    • In-flight calibration of NOAA POES proton detectors - Derivation of the MEPED correction factors 

      Sandanger, Marit Irene J.; Ødegaard, Linn-Kristine Glesnes; Tyssøy, Hilde Nesse; Stadsnes, Johan; Søraas, Finn; Oksavik, Kjellmar; Aarsnes, Kjell (Wiley, 2015-11-25)
      The MEPED instruments on board the NOAA POES and MetOp satellites have been continuously measuring energetic particles in the magnetosphere since 1978. However, degradation of the proton detectors over time leads to an ...
      Journal article
    • The interaction between transpolar arcs and cusp spots 

      Fear, Robert C.; Milan, Steve; Carter, Jenny A.; Maggiolo, Romain (AGU Publications, 2015-11-25)
      Transpolar arcs and cusp spots are both auroral phenomena which occur when the interplanetary magnetic field is northward. Transpolar arcs are associated with magnetic reconnection in the magnetotail, which closes magnetic ...
      Journal article
    • Middle to Late Triassic (Ladinian to Carnian) palynology of shallow stratigraphic cores 7831/2-U-2 and 7831/2-U-1, offshore Kong Karls Land, Norwegian Arctic 

      Meltveit, Anders Røsgård (The University of Bergen, 2015-11-20)
      During the Triassic, the Barents Shelf was situated on the northwestern corner of the Pangaea supercontinent as a large epicontinental seaway. Into early Late Triassic (Carnian), a major delta, prograding from the southeast ...
      Master thesis
    • Independent Set on P5-free graphs, an empirical study 

      Haug, Håvard Karim (The University of Bergen, 2015-11-20)
      We implement the recent polynomial time algorithm for the independent set problem on P5-free graphs, and study the performance of this algorithm on graphs of size up to 50. Our empirical results show that the algorithm ...
      Master thesis
    • Heat Transfer Upscaling in Geothermal Reservoirs 

      Varzina, Anna (The University of Bergen, 2015-11-20)
      In this thesis we implement a numerical model of heat transfer in geothermal reservoirs. We use existing pressure and flow transport solvers as a starting point to investigate discretization techniques for a ...
      Master thesis
    • Factors leading to variation of spawning time in the Barents Sea capelin (Mallotus villosus) 

      Shirajee, Samina (The University of Bergen, 2015-11-20)
      Barents Sea capelin (Mallotus villosus) is a semalparous fish species, and the timing of spawning both in terms of age and season is variable. The present thesis explores potential factors leading to variation in timing ...
      Master thesis
    • Solar radiation energy on the Tibetan plateau 

      Gelsor, Nuozhen (The University of Bergen, 2015-11-20)
      To gain a thorough knowledge of the solar energy resources on the Tibetan Plateau, measured and modeled solar irradiance levels on the Plateau from July 2010 to September 2013 are considered. The Tibetan Plateau lies in ...
      Master thesis
    • Reciprocity calibration of ultrasonic piezoelectric disks in air 

      Andersen, Kenneth Kirkeng (The University of Bergen, 2015-11-20)
      The phase response of a transducer acting as a transmitter or receiver of sound is important in many industrial applications, such as fiscal measurements of natural gas, therein multipath ultrasonic transit-time flow meters, ...
      Master thesis
    • A Comparative Study of Radiation Environment and Secondary Dose Production in a Particle Therapy Treatment Room Applying Proton, Helium and Carbon Ion Beams 

      Sølie, Jarle Rambo (The University of Bergen, 2015-11-20)
      A treatment room used for radiotherapy is generally heavily shielded and has to fulfil and abide to strict rules and regulations in order to ensure the safety and health of hospital personnel and the general public that ...
      Master thesis
    • Efforts towards accessible and reliable bioinformatics 

      Kalaš, Matúš (The University of Bergen, 2015-11-19)
      The aim of the presented work was contributing to making scientific computing more accessible, reliable, and thus more efficient for researchers, primarily computational biologists and molecular biologists. Many approaches ...
      Doctoral thesis
    • Convergence of a Cell-Centered Finite Volume Discretization for Linear Elasticity 

      Nordbotten, Jan Martin (SIAM, 2015-11-19)
      We show convergence of a cell-centered finite volume discretization for linear elasticity. The discretization, termed the MPSA method, was recently proposed in the context of geological applications, where cell-centered ...
      Journal article