Now showing items 348-367 of 533

    • Observation of an excited B[± over c] meson state with the ATLAS detector 

      Aad, Georges; Abbott, Brad; Abdallah, Jalal; Abdel Khalek, Samah; Abdinov, Ovsat Bahram oglu; Aben, Rosemarie; Abi, Babak; Abolins, Maris; AbouZeid, Hass; Abramowicz, Halina; Buanes, Trygve; Dale, Ørjan; Eigen, Gerald; Kastanas, Alex; Liebig, Wolfgang; Lipniacka, Anna; Martin dit Latour, Bertrand; Rosendahl, Peter Lundgaard; Sandaker, Heidi; Sjursen, Therese B.; Smestad, Lillian; Stugu, Bjarne; Ugland, Maren; Bugge, Lars; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Czyczula, Zofia; Gjelsten, Børge Kile; Gramstad, Eirik; Ould-Saada, Farid; Pajchel, Katarina; Pedersen, Maiken; Read, Alexander Lincoln; Røhne, Ole Myren; Stapnes, Steinar; Strandlie, Are; Abreu, Henso; Abreu, Rômulo F.; Adamczyk, Leszek; Adams, David; Adelman, Jareed; Adomeit, Stefanie; Adye, Tim; Agatonovic-Jovin, Tatjana; Aguilar Saavedra, Juan Antonio; Agustoni, Marco; Åkerstedt, Henrik; Åkesson, Torsten P.A.; Åsman, Barbro; ATLAS, Collaboration (American Physical Society, 2014-11-21)
      A search for excited states of the B[± over c] meson is performed using 4.9  fb[superscript −1] of 7 TeV and 19.2  fb[superscript −1] of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is ...
      Journal article
    • Observation of intrinsically bright terrestrial gamma ray flashes from the Mediterranean basin 

      Gjesteland, Thomas; Østgaard, Nikolai; Laviola, Sante; Miglietta, M M; Arnone, Enrico; Marisaldi, Martino; Fuschino, F; Collier, Andrew B.; Fabro, F; Montanya, J (AGU Publications, 2015-12-14)
      We present three terrestrial gamma ray flashes (TGFs) observed over the Mediterranean basin by the Reuven Ramaty High Energy Solar Spectroscope Imager (RHESSI) satellite. Since the occurrence of these events in the ...
      Journal article
    • Observations of planetary waves in the mesosphere-lower thermosphere during stratospheric warming events 

      Stray, Nora Henriette; Orsolini, Yvan; Espy, Patrick Joseph; Limpasuvan, Varavut; Hibbins, Robert (Copernicus PublicationsEuropean Geosciences Union, 2015-05-04)
      This study investigates the effect of stratospheric sudden warmings (SSWs) on planetary wave (PW) activity in the mesosphere–lower thermosphere (MLT). PW activity near 95 km is derived from meteor wind data using a chain ...
      Journal article
    • On automatic data processing and well-test analysis in real-time reservoir management applications 

      Olsen, Stig (The University of Bergen, 2011-06-30)
      Doctoral thesis
    • On-line X-ray fluorescence analysis applied to industrial processes and environmental monitoring 

      Dietzel, Knut Ingvald (The University of Bergen, 2000)
      Abstract X-ray stimulated fluorescence analysis is a powerful and widely used tool for determining the concentration of chemical species in materials. Presently, this is done by taking and preparing samples for off-line ...
      Master thesis
    • Onset of smoldering and transition to flaming fire 

      Hagen, Bjarne Christian (The University of Bergen, 2013-06-28)
      Aim: The aim of this work has been to investigate the effects of density, heat flux and boundary conditions on smoldering. Two focus areas were chosen: the onset of smoldering and the transition from smoldering to flaming ...
      Doctoral thesis
    • Optical spectroscopy for tissue diagnostics and treatment control 

      Yavari, Nazila (The University of Bergen, 2006-06-28)
      Biomedical Optics as an interdisciplinary field of science has been developed during many years and is experiencing tremendous growth, to cover a wide range of optical techniques and methods, utilized for medical therapeutic ...
      Doctoral thesis
    • Optical velocity meter based on Ramsey oscillations in a double-grating setup 

      Preclíková, Jana; Kozák, Martin; Fregenal, Daniel; Hansen, Jan Petter (American Physical Society, 2014-04)
      We propose a method for measuring velocities of atoms or molecules in a gas phase based on time-resolved laser experiments. Two intensity gratings of electromagnetic field with variable time delay τ are created by interfering ...
      Journal article
    • Particle Production in p+p and d+Au Collisions at √sNN = 200 GeV 

      Yang, Hongyan (The University of Bergen, 2007-12-14)
      Doctoral thesis
    • Particle–wave discrimination in Poisson spot experiments 

      Reisinger, Thomas; Bracco, Gianangelo; Holst, Bodil (IOP Publishing Ltd, 2011)
      Matter–wave interferometry has been used extensively over the last few years to demonstrate the quantum-mechanical wave nature of increasingly larger and more massive particles. We have recently suggested the use of ...
      Peer reviewedJournal article
    • PEPT: an invaluable tool for 3-D particle tracking and CFD simulation verification in hydrocyclone studies 

      Chang, Yu-Fen; Adamsen, Tom Christian; Pisarev, Gleb; Hoffmann, Alex Christian (EDP Sciences, 2013)
      Particle tracks in a hydrocyclone generated both experimentally by positron emission particle tracking (PEPT) and numerically with Eulerian-Lagranian CFD have been studied and compared. A hydrocyclone with a cylinder-on-cone ...
      Journal article
    • Performance Evaluation of a Small-Animal PET/CT System 

      Dahle, Tordis Johnsen (The University of Bergen, 2014-06-02)
      This master project is the first vendor-independent performance evaluation of the new nanoScan PET/CT system at the University of Bergen. A comprehensive performance evaluation of a novel scanner is very important, ...
      Master thesis
    • Performance of the ATLAS muon trigger in pp collisions at $\sqrt{s}=$8 TeV 

      Aad, Georges; Abbott, Brad; Abdallah, Jalal; Abdel Khalek, Samah; Abdinov, Ovsat Bahram oglu; Aben, Rosemarie; Abi, Babak; Abolins, Maris; AbouZeid, Hass; Abramowicz, Halina; Buanes, Trygve; Dale, Ørjan; Eigen, Gerald; Kastanas, Alex; Liebig, Wolfgang; Lipniacka, Anna; Martin dit Latour, Bertrand; Rosendahl, Peter Lundgaard; Sandaker, Heidi; Sjursen, Therese B.; Smestad, Lillian; Stugu, Bjarne; Ugland, Maren; Bugge, Lars; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Czyczula, Zofia; Franconi, Laura; Gjelsten, Børge Kile; Gramstad, Eirik; Ould-Saada, Farid; Pajchel, Katarina; Pedersen, Maiken; Read, Alexander Lincoln; Røhne, Ole Myren; Stapnes, Steinar; Strandlie, Are; Abreu, Henso; Abreu, Rômulo F.; Abulaiti, Yiming; Acharya, Bobby S.; Adamczyk, Leszek; Adams, David; Adelman, Jareed; Adomeit, Stefanie; Adye, Tim; Agatonovic-Jovin, Tatjana; Aguilar Saavedra, Juan Antonio; Agustoni, Marco; ATLAS, Collaboration (Springer, 2015-03-13)
      The performance of the ATLAS muon trigger system has been evaluated with proton--proton collision data collected in 2012 at the Large Hadron Collider at a centre-of-mass energy of 8 TeV. The performance was primarily ...
      Journal article
    • Performance of the High Level Trigger gamma-conversion reconstruction chain in the ALICE central tracking detectors 

      Solem, Thomas Christopher (The University of Bergen, 2011-06-01)
      Photons are produced through various processes in the particle and nuclei collisions at the LHC, and pose as useful probes of the formation of a Qaurk-Gluon Plasma. The probability of a photon converting within the central ...
      Master thesis
    • Periodic shock-emission from acoustically driven cavitation clouds: a source of the subharmonic signal 

      Johnston, Keith; Tapia-Siles, Cecilia; Gerold, Bjoern; Postema, Michiel; Cochran, Sandy; Cuschieri, Alfred; Prentice, Paul (Elsevier, 2014-12)
      Single clouds of cavitation bubbles, driven by 254 kHz focused ultrasound at pressure amplitudes in the range of 0.48–1.22 MPa, have been observed via high-speed shadowgraphic imaging at 1 × 10⁶ frames per second. Clouds ...
      Journal article
    • Permittivity measurements using dual open ended coaxial probes 

      Karimi, Mahsa (The University of Bergen, 2012-11-19)
      The motivation for this study has been to conduct a feasibility study on a measuring device to monitor hydrate formation close to the inner surface of a pipe where a multiphase hydrocarbon fluid mixture is flowing. This ...
      Master thesis
    • Petrophysical characterization in paleokarst and effect on reservoir properties 

      Slotnæs, Katrine Nordlund (The University of Bergen, 2012-06-29)
      Karst is a geological process that can enhance porosity and permeability within a carbonate succession, thus affecting the heterogeneity producing a substantial effect on the fluid flow. The subject is not widely explored ...
      Master thesis
    • Phase Field Theory Modeling of CH4 and CO2 Fluxes from Exposed Natural Gas Hydrate Reserviors 

      Baig, Khuram (The University of Bergen, 2009-10-01)
      Natural gas hydrates are widely distributed in sediments along continental margins, and harbor enormous amounts of energy. Gas hydrates are crystalline solids which occur when water molecules form a cage like structure ...
      Master thesis