Now showing items 469-488 of 770

    • Nano to Micro Scale Modeling of Hydrate Phase Transition Kinetics 

      Baig, Khuram (The University of Bergen, 2017-05-23)
      Doctoral thesis
    • Nanostructuring of free-standing, dielectric membranes using electron-beam lithography 

      Grepstad, Jon Olav; Greve, Martin Møller; Reisinger, Thomas; Holst, Bodil (American Institute of Physics, 2013)
      Nanostructured dielectric membranes are used in several applications ranging from de Broglie matter-wave optical elements to photonic crystals. Precise pattern transfer and high aspect ratio structures are crucial for ...
      Journal article
    • Near-surface petrochemical sensing using coplanar waveguides 

      Solberg, Magnus Lien (The University of Bergen, 2015-09-11)
      The project studies the ability of coplanar waveguide sensor in sensing thin layers of petrochemical liquid. A coplanar waveguide is built on flexible printable circuit board partially based on an existing design. Two ...
      Master thesis
    • Nettle as a distinct Bronze Age textile plant 

      Bergfjord, Christian; Mannering, Ulla; Frei, Karin M.; Gleba, Margarita; Scharff, Annemette Bruselius; Skals, Irene; Heinemeier, Jan; Nosch, Marie-Louise; Holst, Bodil (Nature Publishing Group, 2012-09-28)
      It is generally assumed that the production of plant fibre textiles in ancient Europe, especially woven textiles for clothing, was closely linked to the development of agriculture through the use of cultivated textile ...
      Journal article
    • Network analysis of geomagnetic substorms using the SuperMAG database of ground-based magnetometer stations 

      Dods, Joe; Chapman, Sandra; Gjerløv, Jesper (Wiley, 2015-09-26)
      The overall morphology and dynamics of magnetospheric substorms is well established in terms of the observed qualitative auroral features seen in ground-based magnetometers. This paper focuses on the quantitative ...
      Journal article
    • Neutral atom and molecule focusing using a Fresnel zone plate 

      Reisinger, Thomas; Holst, Bodil (American Institute of Physics, 2008)
      Focusing of neutral atoms and molecules has several potential applications. The very first microscopy images using helium as an imaging probe were published earlier this year. Another possible application is to study the ...
      Peer reviewedJournal article
    • Neutral pion production at midrapidity in pp and Pb–Pb collisions at √sNN =2.76 TeV 

      Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Aggarwal, Madan M.; Agnello, Michelangelo; Agostinelli, Andrea; Agrawal, Nikita; Aguilar Salazar, Saul; Ahammed, Zubayer; Ahmad, Nazeer; Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Kanaki, Kalliopi; Liu, Lijiao; Lønne, Per-Ivar; Nystrand, Joakim; Rehman, Attiq ur; Skjerdal, Kyrre; Ullaland, Kjetil; Velure, Arild; Wagner, Boris; Yang, Shiming; Zhou, Zhuo; Arsene, Ionut Christian; Bätzing, Paul Christoph; Dordic, Olja; Lindal, Svein; Mahmood, Sohail Musa; Milosevic, Jovan; Qvigstad, Henrik; Richter, Matthias; Røed, Ketil; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Zhao, Chengxin; Langøy, Rune; Lien, Jørgen André; Ahmed, Ijaz; Ahn, Sang Un; Ahn, Sul-Ah; Aiola, Salvatore; ALICE, Collaboration (The University of Bergen, 2014-10)
      Invariant yields of neutral pions at midrapidity in the transverse momentum range 0.6<pT<12GeV/ c measured in Pb–Pb collisions at √sNN=2.76 TeV are presented for six centrality classes. The pp reference spectrum was measured ...
      Journal article
    • Neutral Pion Production in p-Pb Collisions at √s^NN = 5.02 TeV with ALICE PHOS at the LHC 

      Zhu, Hongsheng (The University of Bergen, 2015-08-24)
      In this thesis, the neutral mesons measurement with ALICE PHOS at the LHC is presented. Depending on the technical design of PHOS and its momentum reach, the strategies of the neutral mesons extraction by invariant mass ...
      Master thesis
    • Neutral Pion Production in pp Collisions at √s = 2.76 TeV at the LHC with the ALICE Detector using the Electromagnetic Calorimeter 

      Zhang, Haitao (The University of Bergen, 2015-07-13)
      In this thesis the measurement of the neutral pion yield and its differential invariant cross section in pp collisions at √s = 2.76 TeV is presented. The π^0 s are measured in the two photon decay channel and photons are ...
      Master thesis
    • New Concept for Evaluating the Risk of Hydrate Formation during Processing and Transport of Hydrocarbons 

      Aromada, Solomon Aforkoghene (The University of Bergen, 2017-10-31)
      Transport of hydrocarbons from reservoir to gas processing plants and for supply to delivery terminals is predominantly done using pipelines, particularly within reasonable distance. In the North Sea of Norway, there are ...
      Master thesis
    • New experimental techniques to study the adhesion to various solid surfaces of hydrate-relevant droplets and particles 

      Dahl, Maren Andrea (The University of Bergen, 2010-10-01)
      Hydrate plugging is a substantial problem in the oil and gas industry, both economically, environmentally and safety wise. Plugging may occur as a result of agglomeration of hydrate particles, deposition of hydrates on ...
      Master thesis
    • New hydrate risk evaluation for processing and transport of natural gas containing water and impurities 

      Kulkarni, Anuli Avinash (The University of Bergen, 2014-10-16)
      The growth of natural gas transport by pipeline has led to the establishment of a large network of pipelines throughout the world [1]. Transport of natural gas through a network of pipelines is a challenging issue, mainly ...
      Master thesis
    • A new method reveals more TGFs in the RHESSI data 

      Gjesteland, Thomas; Østgaard, Nikolai; Collier, A. B.; Carlson, B. E.; Eyles, C.; Smith, D. M. (American Geophysical Union, 2012-03-07)
      Peer reviewedJournal article
    • New method to detect rotation in high-energy heavy-ion collisions 

      Csernai, Laszlo; Svelle, Sindre; Wang, Du-Juan (American Physical Society, 2014-03-31)
      With increasing beam energies the angular momentum of the fireball in peripheral heavy-ion collisions increases, and the proposed differential Hanbury Brown and Twiss analysis is able to estimate this angular momentum ...
      Journal article
    • New Phenomenological Constraints on the Gaugino Mediation Model 

      Murphy, Nick (The University of Bergen, 2016-05-31)
      In this thesis, phenomenological consequences of the Gaugino Mediation model for SUSY breaking are explored. First, the very important trilinear coupling is proven to exist in Gaugino Mediation. Then, the parameter space ...
      Master thesis
    • A new population of Terrestrial Gamma-ray Flashes 

      Berge, Nini Lykke Susanne Aandahl (The University of Bergen, 2017-06-21)
      Terrestrial Gamma-ray Flashes (TGFs) consist of large numbers of highenergy photons produced in thunderstorms in connection with the lightning flash, and are the most energetic photon phenomenon naturally occurring ...
      Master thesis
    • A new population of terrestrial gamma-ray flashes in the RHESSI data 

      Østgaard, Nikolai; Albrechtsen, Kjetil; Gjesteland, Thomas; Collier, Andrew B. (AGU Publications, 2015-12-23)
      Terrestrial gamma-ray flashes (TGFs) are the most energetic photon phenomenon occurring naturally on Earth. An outstanding question is as follows: Are these flashes just a rare exotic phenomenon or are they an intrinsic ...
      Journal article
    • NMR measurements of wettability alternation in Berea Sandstone 

      Vevle, Joar (The University of Bergen, 2011-11-28)
      When a new oil reservoir is discovered and a production strategy is chosen the knowledge about wettability characteristics for the field is of outermost importance. Wettability is a key factor for fluid distribution ...
      Master thesis
    • Non-invasive studies of multiphase flow in process equipment. Positron emission particle tracking technique 

      Balakin, Boris; Adamsen, Tom Christian Holm; Chang, Yu-Fen; Kosinski, Pawel Jan; Hoffmann, Alex Christian (IOP, 2017)
      Positron emission particle tracking (PEPT) is a novel experimental technique for non-invasive inspection of industrial fluid/particle flows. The method is based on the dynamic positioning of a positron-emitting, flowing ...
      Journal article
    • A Nonlinear Differential Equation Solver With Potential Application to Pelton Turbines 

      Tveit, Jesper (The University of Bergen, 2016-05-02)
      The focus in this thesis is the development and implementation of a new method for solving nonlinear differential equations on a grid. The method’s novelty lies in the way it represents continuously distributed variables ...
      Doctoral thesis