Now showing items 1-20 of 657

    • A 2-D Visualisation Study of the Mechanisms behind Increased Recovery due to Polymer Injection in Sandstone 

      Grønnestad, Svenn Erik (The University of Bergen, 2011-11-20)
      The potential of synthetic polymer injection, such as hydrolysed polyacrylamide (HPAM), in reservoirs has been a field of study since the 1960's [1]. The main intension of polymer injection is to improve the problems ...
      Master thesis
    • Absorption properties of high-latitude Norwegian coastal water: The impact of CDOM and particulate matter 

      Cirennima, X; Frette, Øyvind; Hamre, Børge; Erga, Svein Rune; Chen, Yi-Chun; Zhao, Lu; Sørensen, Kai; Norli, Marit; Stamnes, Knut; Stamnes, Jakob J. (Elsevier, 2016-09)
      We present data from measurements and analyses of the spectral absorption due to colored dissolved organic matter (CDOM), total suspended matter (TSM), phytoplankton, and non-algal particles (NAP) in high-latitude northern ...
      Journal article
    • Acoustic effects on pulse forming in ultrasound transit time gas flowmeters at no flow conditions 

      Kanagasundram, Murugendran (The University of Bergen, 1995)
      Master thesis
    • Acoustic measurement of liquid density with applications for mass measurement of oil 

      Bjørndal, Erlend (The University of Bergen, 2007-11-23)
      Doctoral thesis
    • Acoustic Methods for Obtaining the Pressure Reflection Coefficient from a Buffer Rod Based Measurement Cell 

      Bjørndal, Erlend; Frøysa, Kjell-Eivind (IEEE, 2008-08-08)
      The known acoustic methods for obtaining the pressure reflection coefficient from a buffer rod based measurement cell are presented, along with 2 new generic approaches for measuring the pressure reflection coefficient ...
      Journal articlePeer reviewed
    • Acoustic Signatures of Gas Hydrates - Observations and Modelling 

      Tveit, Jørgen Osmund Andersen (The University of Bergen, 2017-08-08)
      Interpretation of a Bottom Simulating Reflector (BSR) associated with gas hydrate accumulations in seismic, depend on gas hydrate saturation and distribution in pore voids. The BSR cannot predict gas hydrate saturation ...
      Master thesis
    • Adaptive transdure basert på tidsreversering. Målinger på en 5x5 array prototype 

      Suleiman, Adam Bahjat (The University of Bergen, 2009-06-11)
      Utvikling av adaptiv transduserarray som er ment for tidsreverserende bruk på en olje/gass-separator. Prinsippet består i styring av en transduser oppdelt i små ankeltceller (array). Hver celle styres av sin egen ...
      Master thesis
    • ALICE TPC Upgrade Activities for LHC Run 3 and Beyond: "SAMPA ASIC Tests with GEM Detector Prototype" 

      Engeseth, Kristian Philip (The University of Bergen, 2015-09-11)
      The Time Projection Chamber (TPC) signal readout of the ALICE detector is being upgraded to accommodate the higher collision rates and -energies during LHC Run 3 in 2018. Due to the increased collision rates, the TPC drift ...
      Master thesis
    • The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events 

      Alme, Johan; Andres, Y; Appelshauser, H; Bablok, Sebastian Robert; Bialas, N; Bølgen, Rikard; Bonnes, U; Bramm, R; Braun-Munzinger, P; Campagnolo, R; Christiansen, P; Dobrin, A; Engster, C; Fehlker, Dominik; Foka, Y; Frankenfeld, U; Gaardhoje, JJ; Garabatos, C; Glassel, P; Gutierrez, CG; Gros, P; Gustafsson, HA; Helstrup, Håvard; Hoch, M; Ivanov, M; Janik, R; Junique, A; Kalweit, A; Keidel, R; Kniege, S; Kowalski, M; Larsen, Dag Toppe; Lesenechal, Y; Lenoir, P; Lindegaard, N; Lippmann, C; Mager, M; Mast, M; Matyja, A; Munkejord, Magne; Musa, L; Nielsen, BS; Nikolic, V; Oeschler, H; Olsen, EK; Oskarsson, A; Osterman, L; Pikna, M; Rehman, A; Renault, G; Renfordt, R; Rossegger, S; Røhrich, Dieter; Røed, Ketil; Richter, Matthias; Rueshmann, G; Rybicki, A; Sann, H; Schmidt, HR; Siska, M; Sitar, B; Soegaard, C; Soltveit, HK; Soyk, D; Stachel, J; Stelzer, H; Stenlund, E; Stock, R; Strmen, P; Szarka, I; Ullaland, Kjetil; Vranic, D; Veenhof, R; Westergaard, J; Wiechula, J; Windelband, B (Elsevier, 2010-10-01)
      The design, construction, and commissioning of the ALICE Time-Projection Chamber (TPC) is described. It is the main device for pattern recognition, tracking, and identification of charged particles in the ALICE experiment ...
      Journal article
    • Alternative gauge for the description of the light-matter interaction in a relativistic framework 

      Selstø, Sølve; Kjellsson, Tor; Lindroth, Eva; Simonsen, Aleksander; Førre, Morten (American Physical Society, 2017-08)
      We present a generalized velocity gauge form of the relativistic laser-matter interaction. In comparison with the (equivalent) regular minimal coupling description, this form of light-matter interaction results in superior ...
      Journal article
    • An altitude and distance correction to the initial fluence distribution of TGFs 

      Nisi, Ragnhild Schrøder; Østgaard, Nikolai; Gjesteland, Thomas; Collier, Andrew B. (Wiley, 2014-10)
      The source fluence distribution of terrestrial gamma ray flashes (TGFs) has been extensively discussed in recent years, but few have considered how the TGF fluence distribution at the source, as estimated from satellite ...
      Journal article
    • Analysis of 3D Pixel Detectors for the ATLAS Inner Tracker Upgrade 

      Heggelund, Andreas Løkken (The University of Bergen, 2017-06-16)
      The silicon 3D pixel detector represent a detector technology that has a higher radiation tolerance compared to the conventional planar pixel detectors. This detector technology is one of the technologies proposed to be ...
      Master thesis
    • Analysis of Ozone (O3) and Erythemal UV (EUV) measured by TOMS in the equatorial African belt 

      Ssenyonga, Taddeo; Stamnes, Jakob J.; Dahlback, Arne; Steigen, Andreas L; Okullo, Willy; Frette, Øyvind (Academy of Science of South Africa, 2010-01-19)
      We presented time series of total ozone column amounts (TOCAs) and erythemal UV (EUV) doses derived from measurements by TOMS (Total Ozone Mapping Spectrometer) instruments on board the Nimbus-7 (N7) and the Earth Probe ...
      Journal article
    • Antennelse av oksiderbar røykgass fra ulmebrann i et lukket miljø. Utvikling av eksperimentelt oppsett 

      Lie, Alexander (The University of Bergen, 2017-06-20)
      Oppgaven er todelt; første del beskriver utformingen av det eksperimentelle oppsettet, andre del er eksperimentell og tar for seg antennelse av oksiderbar røykgass i et lukket miljø. Det var stilt følgende krav til ...
      Master thesis
    • Asymmetric Ionospheric Equivalent Currents at Magnetic Conjugate Points 

      Rosland, Bjørn (The University of Bergen, 2017-07-01)
      In this thesis we will study high-latitude ionospheric equivalent currents at magnetic conjugate points. The following questions have been addressed in this thesis: What solar zenith angle defines the dark-sunlit terminator? ...
      Master thesis
    • ATLAS Detector Monitoring with Jets 

      Skjei, Kent Olav (The University of Bergen, 2009-10-02)
      The purpose of this thesis was to provide a high level software framework for detecting large problems with the ATLAS detector at the LHC and estimate the jet resolution from the f irst data. The result was the program ...
      Master thesis
    • ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at $\sqrt{s}$=7 TeV 

      Buanes, Trygve; Burgess, Thomas; Eigen, Gerald; Kastanas, Alex; Liebig, Wolfgang; Lipniacka, Anna; Rosendahl, Peter Lundgaard; Sandaker, Heidi; Sjursen, Therese B.; Stugu, Bjarne Sandvik; Tonoyan, Arshak; Ugland, Maren; Bugge, Lars; Buran, Torleiv; Cameron, David Gordon; Czyczula, Zofia; Gjelsten, Børge Kile; Gramstad, Eirik; Lund, Esben; Ould-Saada, Farid; Pajchel, Katarina; Pylypchenko, Yuriy; Read, Alexander Lincoln; Røhne, Ole Myren; Samset, Bjørn Hallvard; Smestad, Lillian; Stapnes, Steinar; Strandlie, Are; Aad, Georges; Abajyan, Tatevik; Abbott, Brad; Abdallah, Jalal; Abdel Khalek, Samah; Abdelalim, Ahmed Ali; Abdesselam, Abdel; Abdinov, Ovsat Bahram oglu; Abi, Babak; Abolins, Maris; AbouZeid, Hass; Abramowicz, Halina; Abreu, Henso; Acerbi, Emilio; Adams, David; Addy, Tetteh N.; Adelman, Jareed; Adomeit, Stefanie; Adragna, Paolo; Adye, Tim; Aefsky, Scott Alan; Aharrouche, Mohamed; ATLAS, Collaboration (Springer, 2013-01)
      Mass and angular distributions of dijets produced in LHC proton-proton collisions at a centre-of-mass energy $\sqrt{s}$=7 TeV have been studied with the ATLAS detector using the full 2011 data set with an integrated ...
      Journal article
    • Atmospheric Drag, Occultation 'N' Ionospheric Scintillation (ADONIS) mission proposal: Alpbach Summer School 2013 team orange 

      Hettrich, Sebastian; Kempf, Yann; Perakis, Nikolaos; Górski, Jędrzej; Edl, Martina; Urbář, Jaroslav; Dósa, Melinda; Gini, Francesco; Roberts, Owen W.; Schindler, Stefan; Schemmer, Maximilian; Steenari, David; Joldžić, Nina; Ødegaard, Linn-Kristine Glesnes; Sarria, David; Volwerk, Martin; Praks, Jaan (EDP Sciences, 2015)
      The Atmospheric Drag, Occultation ‘N’ Ionospheric Scintillation mission (ADONIS) studies the dynamics of the terrestrial thermosphere and ionosphere in dependency of solar events over a full solar cycle in Low Earth Orbit ...
      Journal article
    • Atomic resolution imaging of beryl: an investigation of the nano-channel occupation 

      Arivazhagan, V.; Schmitz, F.D.; Vullum, Per Erik; Van Helvoort, Antonius; Holst, Bodil (Wiley, 2016)
      Beryl in different varieties (emerald, aquamarine, heliodor etc.) displays a wide range of colours that have fascinated humans throughout history. Beryl is a hexagonal cyclo-silicate (ring-silicate) with channels going ...
      Journal article
    • Auroral imaging as a tracer of global magnetospheric dynamics 

      Laundal, Karl Magnus (The University of Bergen, 2010-11-12)
      Doctoral thesis