Now showing items 1-20 of 1140

    • Studies of the Relative Biological Effectiveness and Biological Dose in Proton and Carbon Ion Therapy 

      Dahle, Tordis Johnsen (The University of Bergen, 2020-04-28)
      Protons and heavier ions have an increased relative biological effectiveness (RBE) compared to photons. While variable RBE models are applied clinically in carbon ion therapy, the RBE in proton therapy is accounted for ...
      Doctoral thesis
    • Mapping Gas Hydrate Dynamics in Porous Media : Experimental Studies of Gas Hydrates as a Source of CH4 and Sink for CO2 

      Almenningen, Stian (The University of Bergen, 2020-03-20)
      The world needs more energy and the energy has to be more sustainable with respect to carbon dioxide (CO2) emissions. This is the backdrop for studying the diverse applications of gas hydrates in nature. The ice-like ...
      Doctoral thesis
    • Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe–Xe collisions at √sNN=5.44 TeV 

      Acharya, Shreyasi; Acosta, Fernando Torales; 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, 2019-12-28)
      In this Letter, the ALICE Collaboration presents the first measurements of the charged-particle multiplicity density, dNch/dη, and total charged-particle multiplicity, Ntot ch , in Xe–Xe collisions at a centre-of-mass energy ...
      Journal article
    • Monte Carlo simulations of neutron based in-vivo range verification in proton therapy – characterstics of proton-induced secondary particles 

      Helland, Eidi (The University of Bergen, 2019-12-17)
      Radiation therapy is an important treatment modality within cancer treatment, with the aim to deliver a high dose to the target volume while sparing the surrounding tissue. Protons have favourable characteristics of ...
      Master thesis
    • Fire Protection of Industrial Process Equipment 

      Bjørge, Joachim Søreng (The University of Bergen, 2019-12-09)
      Active and passive measures are two main branches in Fire Protection Engineering (FPE). The present thesis, entitled “Fire Protection of Industrial Process Equipment”, studies parts of these topics: 1. A study of the cooling ...
      Doctoral thesis
    • Quantitative Pore-Scale Analysis of CO2 Foam for CCUS 

      Benali, Benyamine (The University of Bergen, 2019-12)
      This experimental thesis is a part of ongoing projects lead by the Reservoir Physics group at the Department of Physics and Technology, University of Bergen. The main objectives of this thesis were to develop image analysis ...
      Master thesis
    • Development of Monte-Carlo Simulation Model of the UiB Gamma-ray tomography system using MCNP 

      Sandtorv, Frida Jogole (The University of Bergen, 2019-10-30)
      Master thesis
    • Search for heavy neutral leptons in decays of W bosons produced in 13 TeV pp collisions using prompt and displaced signatures with the ATLAS detector 

      Aad, Georges; Abbott, Brad; Abbott, Dale C.; Abdinov, Ovsat Bahram oglu; Abed Abud, Adam; Abeling, Kira; Abhayasinghe, Deshan Kavishka; Abidi, Syed Haider; AbouZeid, Hass; Abraham, Nadine L.; Bjørke, Kristian; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Feigl, Simon; Garonne, Vincent; Gramstad, Eirik; Hellesund, Simen; Morisbak, Vanja; Oppen, Henrik; Ould-Saada, Farid; Pedersen, Maiken; Read, Alexander Lincoln; Røhne, Ole Myren; Sandaker, Heidi; Vadla, Knut Oddvar Høie; Buanes, Trygve; Djuvsland, Julia Isabell; Eigen, Gerald; Fomin, Nikolai; Lee, Graham Richard; Lipniacka, Anna; Martin dit Latour, Bertrand; Mæland, Steffen; Stugu, Bjarne; Træet, Are Sivertsen; Abramowicz, Halina; Abreu, Henso; Abulaiti, Yiming; Acharya, Bobby S.; Achkar, Baida; Adachi, Shunsuke; Adam, Lennart; Adam-Bourdarios, Claire; Adamczyk, Leszek; Adamek, Lukas; Adelman, Jareed; Adersberger, Michael; Adigüzel, Aytül; Adorni, Sofia; ATLAS, Collaboration (Springer, 2019-10-30)
      The problems of neutrino masses, matter-antimatter asymmetry, and dark matter could be successfully addressed by postulating right-handed neutrinos with Majorana masses below the electroweak scale. In this work, leptonic ...
      Journal article
    • Charged-particle production as a function of multiplicity and transverse spherocity in pp collisions at √s=5.02and 13 TeV 

      Acharya, Shreyasi; Adamová, Dagmar; Adhya, Souvik Priyam; Adler, Alexander; 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; 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; 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; Ahmad, Shafiq F.; Ahn, Sang Un; Aiola, Salvatore; Akindinov, Alexander; ALICE, Collaboration (Springer, 2019-10-17)
      We present a study of the inclusive chargedparticle transverse momentum (pT) spectra as a function of charged-particle multiplicity density at mid-pseudorapidity, dNch/dη, in pp collisions at √s = 5.02 and 13 TeV ...
      Journal article
    • Two-particle differential transverse momentum and number density correlations in p−Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 TeV at the CERN Large Hadron Collider 

      Acharya, Shreyasi; Adamová, Dagmar; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Neelima; Ahammed, Zubayer; Ahn, Sang Un; Aiola, Salvatore; 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; Akindinov, Alexander; Al-Turany, Mohammed; Alam, Sk Noor; De Albuquerque, Danilo Silva; Aleksandrov, Dimitry; Alessandro, Bruno; Alfaro Molina, José Rubén; Ali, Yasir Turki Ben; ALICE, Collaboration (American Physical Society, 2019-10-10)
      We present measurements of two-particle differential number correlation functions R 2 and transverse momentum correlation functions P 2 , obtained from p -Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 ...
      Journal article
    • Demonstrating the potential of CO2 hydrate self-sealing in Svalbard, Arctic Norway 

      Almenningen, Stian; Hussain, Arif; Betlem, Peter; Roy, Srikumar; Senger, Kim; Ersland, Geir (Elsevier, 2019-10)
      Here we report the potential self-sealing properties of CO2 hydrate for the Longyearbyen CO2 Lab’s shallow aquifer in Svalbard, Arctic Norway, through hydrate formation experiments. The experiments were conducted on a 9 cm ...
      Journal article
    • 3Λh and 3‾Λ‾h lifetime measurement in Pb–Pb collisions at √sNN = 5.02 TeV via two-body decay 

      Acharya, Shreyasi; Adamová, Dagmar; Adhya, Souvik Priyam; Adler, Alexander; 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; 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; Bätzing, Paul Christoph; Dordic, Olja; Lardeux, Antoine Xavier; Lindal, Svein; Mahmood, Sohail Musa; Malik, Qasim Waheed; Neagu, Alexandra; 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; Ahmad, Shafiq F.; Ahn, Sang Un; Akindinov, Alexander; ALICE, Collaboration (Elsevier, 2019-10)
      An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been ...
      Journal article
    • Simulation of Nanoparticle-Stabilized CO2-Foam in Sandstone 

      Nour Ahmed, Adam Ahmed (The University of Bergen, 2019-09-24)
      Master thesis
    • The experimental dose ranges influence the LET_d dependency of the proton minimum RBE (RBE_min) 

      Rørvik, Eivind; Thørnqvist, Sara; Ytre-Hauge, Kristian (IOP Publishing, 2019-09-23)
      Cell experiments have shown the proton relative biological effectiveness (RBE) to vary with dose and linear energy transfer (LET), which has led to development of variable RBE models. The RBE is normally estimated from two ...
      Journal article
    • Blind-prediction: estimating the consequences of vented hydrogen deflagrations for inhomogeneous mixtures in 20-foot ISO containers 

      Skjold, Trygve; Hisken, Helene; Bernard, Laurence; Mauri, Lorenzo; Atanga, Gordon; Lakshmipathy, Sunil; Lucas, Melodia; Carcassi, Marco; al., et (Elsevier, 2019-09)
      This paper summarises the results from a blind-prediction benchmark study for models used for estimating the consequences of vented hydrogen deflagrations, as well as for users of such models. The work was part of the HySEA ...
      Journal article
    • Analysis and Development of Phenomenological Models for the Relative Biological Effectiveness in Proton Therapy 

      Rørvik, Eivind (The University of Bergen, 2019-08-23)
      Proton therapy is undergoing a rapid development making it increasingly popular as a treatment of cancer. Protons interact differently with the tissue compared to conventional radiation therapy with photons, resulting ...
      Doctoral thesis
    • Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation 

      Almenningen, Stian; Fotland, Per; Ersland, Geir (MDPI, 2019-08-22)
      This paper reports formation and dissociation patterns of methane hydrate in sandstone. Magnetic resonance imaging spatially resolved hydrate growth patterns and liberation of water during dissociation. A stacked core ...
      Journal article
    • Design, Verification and Testing of a Digital Signal Processor for Particle Detectors 

      Velure, Arild (The University of Bergen, 2019-08-14)
      The A Large Ion Collider Experiment (ALICE) at the Large Hadron Collider at CERN is upgrading two of its sub-detectors, the Time Projection Chamber and Muon Chambers, with new front-end electronics to handle the expected ...
      Doctoral thesis
    • Triboelectric proximity and contact detection using soft planar spiral electrodes 

      Helseth, Lars Egil (IOP Publishing, 2019-08-02)
      In this study, planar spiral electrodes for triboelectric contact and proximity detection are investigated. The spiral electrodes are created using liquid metal in a soft elastomer in order to make the sensor flexible and ...
      Journal article
    • Solar illumination dependence of the auroral electrojet intensity: Interplay between the solar zenith angle and dipole tilt 

      Ohtani, Shinici; Gjerløv, Jesper; Johnsen, Magnar Gullikstad; Yamauchi, Masatoshi; Brändström, Urban; Lewis, Andrew M. (AGU, 2019-08)
      The present study investigates the dependence of the local auroral electrojet (AEJ) intensity on solar illumination by statistically examining northward geomagnetic disturbances in the auroral zone in terms of the solar ...
      Journal article