Now showing items 329-348 of 977

    • Hydratdannelse og metanproduksjon fra gasshydrat - produksjonsmetoder og resistivitetsutvikling 

      Odland, Jonas (The University of Bergen, 2009-11-20)
      Ved høye trykk og lave temperaturer kan vannmolekyler danne strukturelle bur rundt et gjestemolekyl. Denne substansen er da i fast form og kalles hydrat. I naturlig forekomst av gasshydrat er metan det vanligste gjestemolekylet. ...
      Master thesis
    • Hydrate Formation and CH4 Production from Natural Gas Hydrates - Emphasis on Boundary Conditions and Production Methods 

      Birkedal, Knut Arne (The University of Bergen, 2009-05-13)
      Natural gas hydrate is a solid state of gas and water at low temperature and high pressure. Gas hydrates are known to form hydrate plugs in production line, and has thus generally been considered a problem to the oil ...
      Master thesis
    • Hydrate formation and CO2 - CH4 exchange in sandstone - An experimental study with emphasis on the role of initial brine saturation and salinity 

      Berge, Hans (The University of Bergen, 2013-06-01)
      Recent research activity has demonstrated the viability of producing methane from gas hydrate bearing sediments by injecting and sequestering CO2 in a process where CO2 replace methane in gas hydrate by a process called ...
      Master thesis
    • Hydrate Monitoring using Capacitive Sensors 

      Bayati, Zahra (The University of Bergen, 2013-06-02)
      Gas hydrates are of particular interest in petroleum industry since their formation during oil-production can be a major risk factor. Gas hydrates can block pipelines, interrupt production, and in worst case even cause ...
      Master thesis
    • Hydrodynamical studies of Quark Gluon Plasma: Collective behaviour, initial fluctuations and theoretical fundaments 

      Skålvik, Astrid Marie (The University of Bergen, 2012-05-30)
      This master thesis focuses on collective behaviour of the Quark Gluon Plasma, created at the Large Hadron Collider at CERN. We calculate analytically and semi-analytically the transverse momentum and rapidity dependence ...
      Master thesis
    • Hydroelectric Power in Present and Future Energy Systems 

      Svendsen, Tjalve Magnusson (The University of Bergen, 2013-06-03)
      To be able to understand the dynamics of energy systems, the interplay between a variety of factors affecting them has to be addressed. In this thesis, we look at issues like climate change, energy policy, power transmission, ...
      Master thesis
    • Identifikasjon av undervannsobjekter ved bruk av ultralyd 

      Spjeld, Cato (The University of Bergen, 2018-09-04)
      Hensikten med dette prosjektet er å undersøke om ultralyd kan benyttes som et detekteringssystem under vann. Det er blitt designet tre ulike reflektorer for å se på refleksjonsegenskapene til disse. Fjernstyrte undervannsfarkoster ...
      Master thesis
    • The impact of energetic electron precipitation on mesospheric hydroxyl during a year of solar minimum 

      Zawedde, Annet Eva; Tyssøy, Hilde Nesse; Hibbins, Robert Edward; Espy, Patrick Joseph; Degaard, L-K.; Sandanger, Marit Irene; Stadsnes, Johan (Wiley, 2016-06)
      In 2008 a sequence of geomagnetic storms occurred triggered by high-speed solar wind streams from coronal holes. Improved estimates of precipitating fluxes of energetic electrons are derived from measurements on board the ...
      Journal article
    • The impact of sunlight on high-latitude equivalent currents 

      Laundal, Karl Magnus; Gjerløv, Jesper; Østgaard, Nikolai; Reistad, Jone Peter; Haaland, Stein; Snekvik, Kristian; Tenfjord, Paul; Ohtani, Shin-ichi; Milan, Steve (Wiley, 2016-03)
      Ground magnetic field measurements can be mathematically related to an overhead ionospheric equivalent current. In this study we look in detail at how the global equivalent current, calculated using more than 30 years of ...
      Journal article
    • Impact of variable proton relative biological effectiveness on estimates of secondary cancer risk in paediatric cancer patients 

      Grandemo, Vilde (The University of Bergen, 2018-12-12)
      Background: Proton therapy has an increased dose-conformity compared to conventional radiotherapy with photons, and paediatric cancer patients receiving cranio-spinal irradiation (CSI) are routinely referred to this treatment ...
      Master thesis
    • Impacts on oil recovery from capillary pressure and capillary heterogeneities 

      Bognø, Thomas (The University of Bergen, 2008-06-02)
      This thesis summarises the findings made in NFR-funded project “Capillary Pressure and Capillary Heterogeneities”. The focus has been to determine the impact on oil recovery from wettability and fractures in carbonate ...
      Doctoral thesis
    • Implementasjon av interrupt-styrd DMA-overføring på HLT-RORC 

      Torheim, Olav (The University of Bergen, 2005)
      På CERN i Geneve vert det bygd ein ny partikkelakselerator kalla LHC. Ein av dei fire hovuddetektorane i LHC vert kalla for ALICE. I ALICE-detektoren møtest akselererte blyion i høgenergetiske kollisjonar. Med desse ...
      Master thesis
    • Implementation of Improved EDC Combustion Model in the Open LES Code FDS 

      Johansen, David René Ursin (The University of Bergen, 2012-08-09)
      In this thesis, Magnussen’s and Hjertager’s Eddy Dissipation Concept (EDC) Combustion Model has been implemented in the CFD code Fire Dynamics Simulator (FDS). FDS is an open source non-commercial Large Eddy Simulation ...
      Master thesis
    • In situ fluid dynamics and CO2 injection in porous rocks 

      Brautaset, Amund (The University of Bergen, 2009-12-18)
      Understanding multiphase fluid flow in porous rocks implies knowledge of fundamental properties such as wettability, relative permeability and capillary pressure. These parameters, as well as the extent of fractures and ...
      Doctoral thesis
    • In-flight calibration of NOAA POES proton detectors - Derivation of the MEPED correction factors 

      Sandanger, Marit Irene; 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
    • In-situ measurements of rare earth elements in deep sea sediments using nuclear methods 

      Obhođaš, Jasmina; Sudac, Davorin; Meric, Ilker; Pettersen, Helge Egil Seime; Uroić, Milivoj; Nađ, Karlo; Valković, Vlado (Nature Publishing Group, 2018-03-21)
      The prospecting activities for finding new rare earth elements (REE) sources have increased greatly in recent years. One of the main discoveries was announced in 2011 by Japanese researchers who found large quantities of ...
      Journal article
    • Inclusive J/ψ cross section in proton-proton collisions at the center-of-mass energy 13TeV with ALICE 

      Lofnes, Ingrid Mckibben (The University of Bergen, 2018-12-07)
      This thesis describes the inclusive cross section measurement of the J/ψ meson in the di-electron channel measured at mid-rapidity in proton-proton collisions at the center-of-mass energy 13 TeV. The analyzed data sample ...
      Master thesis
    • Inclusive J/ψ production at forward and backward rapidity in p-Pb collisions at √sNN=8.16 TeV 

      Acharya, Shreyasi; Acosta, Fernando T.; Adamová, Dagmar; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahn, Sang Un; Alme, Johan; Altenkaemper, Lucas; Djuvsland, Øystein; Ersdal, Magnus Rentsch; Fionda, Fiorella Maria Celeste; Nystrand, Joakim; Rehman, Attiq ur; Røhrich, Dieter; Tambave, Ganesh Jagannath; Ullaland, Kjetil; Wagner, Boris; Zhou, Zhuo; Arsene, Ionut Christian; Bätzing, Paul Christoph; Dordic, Olja; Lardeux, Antoine Xavier; Lindal, Svein; Mahmood, Sohail Musa; Malik, Qasim Waheed; Richter, Matthias; 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; Aiola, Salvatore; Akindinov, Alexander; Al-Turany, Mohammed; Alam, Sk Noor; De Albuquerque, Danilo Silva; Aleksandrov, Dimitry; Alessandro, Bruno; Alfaro Molina, José Rubén; ALICE, Collaboration (Springer Berlin Heidelberg, 2018-07-25)
      Inclusive J/ψ production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision 𝑠NN‾‾‾‾√=8.16 TeV, using the ALICE detector at the CERN LHC. The J/ψ meson is reconstructed, via its ...
      Journal article
    • Inclusive J/ψ proInclusive J/ψ production in Xe–Xe collisions at √sNN = 5.44 TeVduction in Xe–Xe collisions at √sNN = 5.44 TeV 

      Acharya, Shreyasi; Acosta, Fernando T.; Adamová, Dagmar; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahn, Sang Un; Alme, Johan; Altenkaemper, Lucas; Djuvsland, Øystein; Ersdal, Magnus Rentsch; Fionda, Fiorella Maria Celeste; Nystrand, Joakim; Rehman, Attiq ur; Røhrich, Dieter; Tambave, Ganesh Jagannath; Ullaland, Kjetil; Wagner, Boris; Zhou, Zhuo; Arsene, Ionut Cristian; Bätzing, Paul Christoph; Dordic, Olja; Lardeux, Antoine Xavier; Lindal, Svein; Mahmood, Sohail Musa; Malik, Qasim Waheed; Richter, Matthias; 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; Aiola, Salvatore; Akindinov, Alexander; Al-Turany, Mohammed; Alam, Sk Noor; De Albuquerque, Danilo Silva; Aleksandrov, Dimitry; Alessandro, Bruno; Alfaro Molina, José Rubén; ALICE, Collaboration (Elsevier, 2018-08-31)
      Inclusive J/ψ production is studied in Xe–Xe interactions at a centre-of-mass energy per nucleon pair of TeV, using the ALICE detector at the CERN LHC. The J/ψ meson is reconstructed via its decay into a muon pair, in the ...
      Journal article