Now showing items 744-763 of 997

    • 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
    • Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton-proton collisions at the LHC 

      Aaboud, Morad; Aad, Georges; Abbott, Brad; Abdallah, Jalal; Abdinov, Ovsat Bahram oglu; Abeloos, Baptiste; Aben, Rosemarie; AbouZeid, Hass; Abraham, Nadine L.; Abramowicz, Halina; Buanes, Trygve; Dale, Ørjan; Eigen, Gerald; Kastanas, Alex; Liebig, Wolfgang; Lipniacka, Anna; Martin dit Latour, Bertrand; Mæland, Steffen; Smestad, Lillian; Stugu, Bjarne; Yang, Zongchang; Zalieckas, Justas; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Feigl, Simon; Franconi, Laura; Garonne, Vincent; Gjelsten, Børge Kile; Gramstad, Eirik; Morisbak, Vanja; Nilsen, Jon Kerr; Ould-Saada, Farid; Pajchel, Katarina; Raddum, Silje Hattrem; Read, Alexander Lincoln; Røhne, Ole Myren; Sandaker, Heidi; Serfon, Cédric; Stapnes, Steinar; Strandlie, Are; Abreu, Henso; Abreu, Rômulo F.; Abulaiti, Yiming; Acharya, Bobby S.; Adamczyk, Leszek; Adams, David; Adelman, Jareed; Adersberger, Michael; ATLAS, Collaboration (Springer, 2017-05)
      This paper presents the method and performance of primary vertex reconstruction in proton--proton collision data recorded by the ATLAS experiment during Run 1 of the LHC. The studies presented focus on data taken during ...
      Journal article
    • Recreating the top quark: Commissioning and monitoring of the ATLAS Inner Detector and search for New Physics with heavy particles. 

      Tonoyan, Arshak (The University of Bergen, 2012-02-03)
      The ATLAS (A Toroidal Lhc ApparatuS) experiment is one of the two general purpose experiments at the Large Hadron Collider (LHC) at CERN, the European Organization for Nuclear Research. The LHC is a proton-proton and ...
      Doctoral thesis
    • Reduction of noise in seismic hydrophone arrays modelling of breathing waves and adaptive noise cancelling 

      Bjelland, Cato (The University of Bergen, 1993-04)
      Doctoral thesis
    • Rheological properties of hydrophobically modified anionic polymers: The effect of varying salinity in polymer solution 

      Time, Peter Aarrestad (The University of Bergen, 2017-06-16)
      A new class of polymers, named ‘hydrophobically modified water-soluble polymers’, has been developed as an alternative to the more commonly used polyelectrolytes in enhanced oil recovery (EOR) applications. These polymers ...
      Master thesis
    • Rheology of Synthetic Polymers in Porous Media 

      Larsen, Jørgen Omre (The University of Bergen, 2014-06-02)
      This master thesis is written out of the Centre for Integrated Petroleum Research (UNI CIPR) at the University of Bergen (UiB). The aim of this study has been to describe the polymer rheology of the high molecular ...
      Master thesis
    • Risiko for spredning av flammer og røyk gjennom brannskiller ved endringer i bruk av sprinkler og røykkontroll i boligkvarter på petroleumsinnretninger. 

      Hauken, Jan-Øivind (The University of Bergen, 2016-09-27)
      Målet med oppgaven har vært å undersøke hvordan endringer i bruk av sprinkler og brannspjeld i boligkvarter på petroleumsinnretninger, har påvirket risiko for spredning av flammer og røyk gjennom ventilasjonskanaler. ...
      Master thesis
    • Rotation and Polarization in Heavy Ion Collisions 

      Xie, Yilong (The University of Bergen, 2017-12-19)
      Doctoral thesis
    • Rotation and Turbulence in Peripheral Heavy Ion Collisions 

      Wang, Du-Juan (The University of Bergen, 2014-12-16)
      In our computational fluid dynamics (CFD) calculations the Kelvin-Helmholtz instability (KHI) starts to develop in peripheral collisions. At high energies the shear viscosity of the Quark Gluon Plasma (QGP) flow is ...
      Doctoral thesis
    • Rotation and Turbulent Instability in Peripheral Heavy Ion Collisions 

      Csernai, Laszlo; Wang, Du-Juan (EDP Sciences, 2014-04-29)
      In recent years fluid dynamical processes became a dominant direction of research in high energy heavy ion reactions. The Quark-gluon Plasma formed in these reactions has low viscosity, which leads to significant fluctuations ...
      Conference object
    • Rotation in an exact hydrodynamical model 

      Csernai, Laszlo; Wang, Du-Juan; Csörgo, T. (American Physical Society, 2014-08-01)
      We study an exact and extended solution of the fluid dynamical model of heavy ion reactions and estimate the rate of slowing down of the rotation due to the longitudinal and transverse expansion of the system. The initial ...
      Journal article
    • Rydberg Atoms in THz Fields 

      Rørstad, Jørgen Johansen (The University of Bergen, 2015-11-17)
      Rydberg atoms are highly excited atoms with bizarre and exotic properties such as huge orbits and exaggerated sensitivity to fields. In this study we examine these atoms using classical methods. We present the classical ...
      Master thesis
    • Sammenligning av spredningsmodellering med kodene PHAST og FLACS, for “tyngre en luft” gassjeter med horisontalt sammenstøt, og valideringssimuleringer av MUST forsøkene. 

      Lindtner, Aksel (The University of Bergen, 2011-01-20)
      Denne rapporten er et arbeid som sammenligner to dataverktøy, PHAST og FLACS vedrørende ulike spredningsscenarier for fluider, først og fremst tung-gassutslipp. Det er utført en rekke simuleringer som ligger til grunn for ...
      Master thesis
    • Scaffolding open inquiry: How a teacher provides students with structure and space 

      Bjønness, Birgitte; Kolstø, Stein Dankert (Nasjonalt senter for naturfag i opplæringen (Naturfagsenteret), Universitetet i Oslo, 2015)
      The present case study examines a teacher’s scaffolding strategies supporting his students during a twelve-week open inquiry project at an upper secondary school. We use interaction analysis to identify how he provides ...
      Journal article
    • Scale size-dependent characteristics of the magnetosphere-ionosphere system using auroral imaging 

      Humberset, Beate Krøvel (The University of Bergen, 2017-10-06)
      The spectacular and breathtaking aurora dancing around on the night sky visualizes the fundamental behavior of complex processes in the near Earth space. The plethora of papers published over the last five decades have ...
      Doctoral thesis
    • Scale size-dependent characteristics of the nightside aurora 

      Humberset, Beate Krøvel; Gjerløv, Jesper; Samara, Marilla; Michell, Robert (Wiley, 2017-02)
      We have determined the spatiotemporal characteristics of the magnetosphere-ionosphere (M-I) coupling using auroral imaging. Observations at fixed positions for an extended period of time are provided by a ground-based ...
      Journal article
    • Scattering from spheres and cylinders - revisited 

      Hobæk, Halvor; Nesse, Tonje Lexau (Norwegian Physical Society, 2006)
      Backscattering of sound from elastic spheres is commonly applied for calibration of acoustic systems. Measurements on the "form function" of various tungsten carbide spheres turned out not to match simulations based on ...
      Conference object
    • Scenario based analysis of fire escalation in a gas process plant 

      Bjørge, Joachim Søreng (The University of Bergen, 2013-05-28)
      This study takes place on a medium sized gas process plant called reference plant. In this thesis several escalation scenarios, as well as gas dispersion, is evaluated through Kameleon KFX and Vessfire. It has previously ...
      Master thesis
    • The science case for the EISCAT_3D radar 

      McCrea, Ian W.; Aikio, Anita; Alfonsi, Lucilla; Belova, Evgenia; Buchert, Stephan C.; Clilverd, Mark; Engler, Norbert; Gustavsson, Björn Johan; Heinselman, C.; Kero, Johan; Kosch, Mike; Lamy, Herve; Leyser, Thomas; Ogawa, Yasunobu; Oksavik, Kjellmar; Pellinen-Wannberg, Asta; Pitout, Frederic; Rapp, Markus; Stanislawska, Iwona; Vierinen, Juha (Springer, 2015-07-29)
      The EISCAT (European Incoherent SCATer) Scientific Association has provided versatile incoherent scatter (IS) radar facilities on the mainland of northern Scandinavia (the EISCAT UHF and VHF radar systems) and on Svalbard ...
      Journal article
    • Scintillation and irregularities from the nightside part of a Sun-aligned polar cap arc 

      van der Meeren, Christer; Oksavik, Kjellmar; Lorentzen, Dag Arne; Paxton, Larry J.; Clausen, Lasse Boy Novock (American Geophysical Union, 2016-06-18)
      In this paper we study the presence of irregularities and scintillation in relation to the nightside part of a long-lived, Sun-aligned transpolar arc on 15 January 2015. The arc was observed in DMSP UV and particle data ...
      Journal article