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    • Universality of Lower Hybrid Waves at Earth's Magnetopause 

      Graham, D. B.; Khotyaintsev, Yu V; Norgren, Astrid Elisabet Cecilia; Vaivads, Andris; Andre, M.; Drake, J. F.; Egedal, J.; Zhou, M.; Le Contel, O; Webster, J.M.; Lavraud, B.; Kacem, Imed; Génot, V.; Jacquey, C.; Rager, AC; Gershman, Daniel J; Burch, J. L.; Ergun, Robert E (Journal article; Peer reviewed, 2019)
      Waves around the lower hybrid frequency are frequently observed at Earth's magnetopause and readily reach very large amplitudes. Determining the properties of lower hybrid waves is crucial because they are thought to ...

    • Unlocking multimodal PET-MR synergies for geoscience 

      Brattekås, Bergit; Gauteplass, Jarand; Brekke, Njål; Fernø, Martin; Ersland, Geir (Journal article; Peer reviewed, 2020)
      The recent combination of positron emission tomography (PET) and magnetic resonance (MR) imaging modalities in one clinical diagnostic tool represents a scientific advancement with high potential impact in geoscientific ...

    • Unsteady-State CO2 Foam Generation and Propagation: Laboratory and Field Insights 

      Alcorn, Zachary Paul; Sæle, Aleksandra Magdalena; Karakas, Metin; Graue, Arne (Journal article; Peer reviewed, 2022-09-07)
      This work presents a multiscale experimental and numerical investigation of CO2 foam generation, strength, and propagation during alternating injection of surfactant solution and CO2 at reservoir conditions. Evaluations ...

    • Unsteady-state CO2 foam injection for increasing enhanced oil recovery and carbon storage potential 

      Sæle, Aleksandra Magdalena; Graue, Arne; Alcorn, Zachary Paul (Journal article; Peer reviewed, 2022)
      The efficiency of CO2 injection for enhanced oil recovery (EOR) and carbon storage is limited by severe viscosity and density differences between CO2 and reservoir fluids and reservoir heterogeneity. In-situ generation of ...

    • Unusual shrinkage and reshaping of Earth’s magnetosphere under a strong northward interplanetary magnetic field 

      Wang, Xiang-Yu; Zhang, Qing-He; Wang, Chi; Zhang, Yong-Liang; Tang, Bin-Bin; Xing, Zan-Yang; Oksavik, Kjellmar; Lyons, Larry R.; Lockwood, Michael; Zong, Qiu-Gang; Li, Guo-Jun; Liu, Jing; Ma, Yu-Zhang; Wang, Yong (Journal article; Peer reviewed, 2023)
      The Earth’s magnetosphere is the region of space where plasma behavior is dominated by the geomagnetic field. It has a long tail typically extending hundreds of Earth radii (RE) with plentiful open magnetic fluxes threading ...

    • Unveiling the strong interaction among hadrons at the LHC 

      Acharya, Shreyasi; Adamová, Dagmar; Adler, Alexander; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahmad, Shafiq F.; Alme, Johan; Altenkaemper, Lucas; Djuvsland, Øystein; Eikeland, Viljar Nilsen; Ersdal, Magnus Rentsch; Fionda, Fiorella Maria Celeste; Grøttvik, Ola Slettevoll; Lofnes, Ingrid Mckibben; Nystrand, Joakim; Rehman, Attiq Ur; Røhrich, Dieter; Tambave, Ganesh Jagannath; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Yuan, Shiming; Zhou, Zhuo; Arsene, Ionut Cristian; Dordic, Olja; Lardeux, Antoine Xavier; Mahmood, Sohail Musa; Malik, Qasim Waheed; Neagu, Alexandra; Richter, Matthias; Røed, Ketil; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Nesbø, Simon Voigt; Storetvedt, Maksim Melnik; Langøy, Rune; Lien, Jørgen André; Ahn, Sang Un; Akbar, Zaenai; Akindinov, Alexander; Al-Turany, Mohammed; Alam, Sk Noor; ALICE, Collaboration (Journal article; Peer reviewed, 2020)
      One of the key challenges for nuclear physics today is to understand from first principles the effective interaction between hadrons with different quark content. First successes have been achieved using techniques that ...

    • Update on the CP-Violating Inert-Doublet Model 

      Grzadkowski, Bohdan; Øgreid, Odd Magne; Osland, Per; Pukhov, Alexander; Purmohammadi, Mahdi (Peer reviewed; Journal article, 2012)
      We have updated a recently proposed extension of the Inert Doublet Model. The extension amounts to the addition of an extra non-inert scalar doublet. The model thus offers a possibility of CP violation in the scalar sector ...

    • Updated constraints on Z′ and W′ bosons decaying into bosonic and leptonic final states using the run 2 ATLAS data 

      Osland, Per; Pankov, A.A.; Serenkova, I.A. (Journal article; Peer reviewed, 2021)
      The full ATLAS run 2 dataset with a time-integrated luminosity of 139  fb−1 in the diboson and dilepton channels is used to probe benchmark models with extended gauge sectors: the E6-motivated grand unification models, the ...

    • Upgrade of the ALICE central barrel tracking detectors: ITS and TPC 

      Gasik, P.; Acharya, Shreyasi; Acosta, Fernando T.; Adamová, Dagmar; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Neelima; Ahammed, Zubayer; 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; Hetland, Kristin Fanebust; Kileng, Bjarte; Nesbø, Simon Voigt; Storetvedt, Maksim Melnik; Helstrup, Håvard; Langøy, Rune; Lien, Jørgen André; Ahn, Sang Un; Aiola, Salvatore; Akindinov, Alexander; Al-Turany, Mohammad; Alam, Sk Noor; Albuquerque, D. S. D.; Aleksandrov, Dmitry; Alessandro, Bruno; ALICE, Collaboration (Peer reviewed; Journal article, 2019-02)
      The ALICE Collaboration will undertake a major upgrade of the detector apparatus during the second LHC Long Shutdown LS2 (2019–2020) in view of the Runs 3 and 4 (2021–2029). The objective of the upgrade is two-fold: i) an ...

    • The upgrade of the ALICE TPC with GEMs and continuous readout 

      Tpc Collaboration, Alice; Adolfsson, J.; Ahmed, M.; Aiola, Salvatore; Alme, Johan; Alt, T.; Amend, W.; Anastasopoulos, F.; Andrei, C.; Angelsmark, M.; Anguelov, V.; Anjam, A.; Appelshauser, H.; Aprodu, V.; Arnold, O.; Arslandok, M.; Baitinger, D.; Ball, M.; Barnaföldi, Gergely Gábor; Bartsch, E.; Becht, P.; Bellwied, R.; Berdnikova, A.; Berger, M.; Bialas, N; Bialas, P.; Biswas, S.; Blidaru, B.; Boldizsár, L.; Bratrud, L.; Braun-Munzinger, P.; Bregant, M.; Britton, C.L.; Brucker, S.; Brucken, E.J.; Buesching, H.; Soto Camacho, Camacho; Campos, A.L.; Caragheorgheopol, G.; Carvalho, D.D.; Castro, A.J.; Chatzidaki, P.; Christiansen, P.; Clonts, L.G.; Cormier, T.M.; Couto, A.L.D.; Cubas, H.G.A.; Deisting, A.; Dhankher, P.; Dittrich, S.; Duta, V.; Ehlers, R.J.; Engel, M.; Ericson, M.N.; Ezell, N.B.; Fabbietti, L.; Flor, F.; Föhner, G.; Frankenfeld, U.; Futo, E.; Gaardhoje, J.J.; Munhoz, M.G.; Garabatos, C.; Gasik, P.; Geiger, T.; Gera, A.; Glässel, P.; Goh, D.J.Q.; Grachov, Oleg; Grein, A.; Gul, M.; Gunji, T.; Habib, M.K.; Hamagaki, H.; Hamar, G.; Hansen, J.C.; Harlenderova, A.; Harris, J.W.; Hassan, S.; Hauer, P.; Hayashi, S.; Heckel, S.T.; Hehner, J.; Heino, J.K.; Hellbär, E.; Helstrup, Håvard; Herghelegiu, A.; Hernandes Da Costa Porto, Da; Hernandez, R.A.; Hernandez Herrera, Herrera; Herold, T.; Hilden, T.E.; Hohlweger, B.; Hornung, S.; Hughes, C.; Hummel, S.; Ivanov, M.; Jung, J.; Jung, M.; Just, D.; Kangasaho, E.; Karayan, L.; Ketzer, B.; Kirsch, S.; Kleiner, M.; Klemenz, T.; Klewin, S.; Knospe, A.G.; Koskinen, E.; Kowalski, M.; Kreis, L.; Krüger, M.; Kupfer, N.; Lang, R.; Lautner, L.; Lesch, M.; Lesenechal, Y; Liebske, F.; Lippmann, C.; Litichevskyi, V.; Ljunggren, M.; Llope, W.J.; Mahmood, Sohail Musa; Mahmoud, T.; Majka, R.D.; Markert, C.; Martinez, J.L.; Martins, T.A.; Masciocchi, S.; Mathis, A.M.; Matonoha, O.; Matsuyama, Y.; Matyja, A.; Meres, M.; Mihaylov, D.L.; Miśkowiec, D.; Mittelstaedt, T.; Montali, L.S.; Moraes, D.; Mordasini, C.; Morhardt, T.; Muley, S.; Mulligan, J.D.; Munzer, R.H.; Murakami, H.; Münning, K.; Nassirpour, A.F.; Natal Da Luz, Da; Nattrass, C.; Negrao De Oliveira, De; Neves, H.G.; Nielsen, B.S.; Noije, W.A.V.; Ogino, M.; Oliveira Da Silva, Da; Oskarsson, A.; Ottnad, J.; Oyama, K.; Onnerstad, A.; Osterman, L.; Pabon, A.A.; Pachmayer, Y.; Paić, G.; Parkkila, J.E.; Pathak, S.P.; Patra, R.N.; Peskov, V.; Petris, M.; Petrovici, M.; Planinic, M.; Pompei, F.; Prodan, L.; Radu, A.; Radulescu, L.; Rak, J.; Rasson, J.; Ratza, V.; Read, K.F.; Rehman, Attiq Ur; Renfordt, R.; Roed, K.; Röhrich, Dieter Rudolf Christian; Rubio, E.; Rudzki, T.; Rusu, A.; Saleh, M.; Sanches, B.C.S.; Schambach, J.; Scheid, S.; Schmidt, C.; Schmier, A.R.; Schulte, H.; Schweda, K.; Sekihata, D.; Shimizu, N.; Siebig, S.; Silva, R.W.D.; Silvermyr, D.; Simpson, D.; Sitar, B.; Smirnov, N.; Snellman, T.W.; Soltveit, H.K.; Sorensen, S.; Sozzi, F.; Stachel, J.; Szabo, A.; Šerkšnytė, L.; Takeuchi, Y.; Tambave, Ganesh Jagannath; Tanaka, Y.; Terasaki, K.; Turpeinen, R.J.; Ullaland, Kjetil; Ulukutlu, B.; Umaka, E.N.; Utrobicic, A.; Varga, D.; Vargas, A.; Vargyas, M.; Varma, R.; Vazquez Rueda, Rueda; Velure, Arild; Vereschagin, S.; Vergara Limón, Limon; Vergara Urrutia, Urrutia; Vorbach, O.; Voss, B.; Vranic, D; Warmack, R.J.; Weber, T.O.; Weidlich, C.; Wiechula, J.; Windelband, B.; Winkler, S.; Witt, W.E. (Journal article; Peer reviewed, 2021)
      The upgrade of the ALICE TPC will allow the experiment to cope with the high interaction rates foreseen for the forthcoming Run 3 and Run 4 at the CERN LHC. In this article, we describe the design of new readout chambers ...

    • Upscaling on Fracture Flow Models 

      Dugstad, Martin Sandanger (Master thesis, 2017-08-25)
      Fractures have a great impact on the quality of a porous media. The understanding of the fractures is important to describe the challenges linked to flow of geothermal heat, the transport of groundwater or transport of ...

    • Use of biodegradable colloids and carbon black nanofluids for solar energy applications 

      Kosinska, Anna Dorota; Balakin, Boris; Kosinski, Pawel Jan (Journal article; Peer reviewed, 2021)
      The conversion of solar energy to heat can be performed in direct absorption solar collectors, where the radiation from the sun is absorbed by a fluid. There are various types of fluids that can be used, and recently, ...

    • Use of CO2 Foam to Increase CO2 Storage and Oil Recovery for CCUS 

      Ellingsen, Amalie Rott (Master thesis, 2022-06-10)

    • Use of market ready light dosimeters for patients with erythropoietic protoporphyria disorder 

      Nedrebø, Svein (Master thesis, 2017-06-21)
      Erythropoietic protoporphyria (EPP) disorder causes severe pain in the skin when patients are overexposed to light, particularly blue light. These patients can only stay exposed to sunlight for a short amount of time, and ...

    • Using machine learning to characterize solar wind driving of convection in the terrestrial magnetotail lobes 

      Cao, Xin; Halekas, Jasper; Haaland, Stein Egil; Ruhunusiri, Suranga; Glassmeier, Karl-Heinz (Journal article; Peer reviewed, 2023)
      In order to quantitatively investigate the mechanism of how magnetospheric convection is driven in the region of magnetotail lobes on a global scale, we analyzed data from the ARTEMIS spacecraft in the deep tail and data ...

    • Using Multivariate Data Analysis and ATR-FTIR Spectroscopy for Modeling Components Present During CO2 Capture with Amines 

      Sjo, Helene Irgens (Master thesis, 2018-06-20)
      This master thesis is a collaboration between Technology Centre Mongstad (TCM) and University of Bergen. The project is to develop a method to accurately predict total inorganic carbon, total alkalinity and density using ...

    • Utvikling av kjennetegn på elevers måloppnåelse innen kritisk tenkning i naturfag 

      Tysse, Anniken Stina (Master thesis, 2020-12-20)
      Fagfornyelsen har et fokus på kritisk tenkning (Kunnskapsdepartementet, 2017). I den sammenheng ønsker jeg å utvikle et verktøy til kritisk tenkning som både elever og lærere kan ta i bruk. Jeg har utviklet kjennetegn på ...

    • UV and aerosol climatology based on simulations and measurements by satellites and ground station 

      Chen, Yi-Chun (Doctoral thesis, 2013-03-22)
      Solar radiation (200–4,000 nm) is very important for the climate system on Earth. It provides heat and drives the photosynthesis in plants to fuel all life. It plays a major role in the original synthesis of biomolecules ...

    • Validating the Space Weather Modeling Framework (SWMF) for applications in northern Europe: Ground magnetic perturbation validation 

      Kwagala, Norah Kaggwa; Hesse, Michael; Moretto, Therese; Tenfjord, Paul; Norgren, Astrid Elisabet Cecilia; Tóth, Gábor; Gombosi, Tamás I.; Kolstø, Håkon Midthun; Spinnangr, Susanne Flø (Journal article; Peer reviewed, 2020)
      In this study we investigate the performance of the University of Michigan’s Space Weather Modeling Framework (SWMF) in prediction of ground magnetic perturbations (ΔB) and their rate of change with time (dB/dt), which is ...

    • Validation of Soot Modelling in the CFD code FLACS 

      Panchal, Dhaval Madhusudan (Master thesis, 2019-06-19)
      In a fire scenario, the role of soot is important from different standpoints. It has a significant contribution to heat transfer by radiation and it proves to be a hindrance in evacuation activities as it reduces visibility. ...