Recent additions

  • Effects of Geomagnetic Disturbances on Offshore Magnetic Directional Wellbore Positioning in the Northern Auroral Zone 

    Edvardsen, Inge (Doctoral thesis; Doktorgradsavhandling, 2016-01-29)
    This thesis focuses on how disturbances in the geomagnetic field, offshore northern Norway, may affect the accuracy of magnetic directional wellbore surveying. The topics discussed are, however, applicable to the entire ...
  • Properties and distribution of a metallo-β-lactamase (ALI-1) from the fish pathogen Aliivibrio salmonicida LFI1238 

    Kristiansen, Anders; Grgic, Miriam; Altermark, Bjørn; Leiros, Ingar (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
    Objectives. To characterize the chromosome-encoded metallo-β-lactamase (MBL) from the psychrophilic, marine fish-pathogenic bacterium Aliivibrio salmonicida LFI1238 and check for the presence of the gene in other Aliivibrio ...
  • Ligand noninnocence in FeNO corroles: insights from β-octabromocorrole complexes 

    Norheim, Hans-Kristian; Capar, Jan; Einrem, Rune; Gagnon, Kevin J.; Beavers, Christine; Vazquez-Lima, Hugo; Ghosh, Abhik (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-30)
    The first FeNO octabromocorroles have been synthesized including four β-octabromo-meso-tris(p-X-phenyl)corrole derivatives Fe[Br8TpXPC](NO) (X = CF3, H, CH3, OCH3) and the β-octabromo-meso-tris(pentafluorophenyl)corrole ...
  • COPD in primary lung cancer patients: prevalence and mortality 

    Ytterstad, Elinor; Moe, Per Christian; Hjalmarsen, Audhild (Journal article; Peer reviewed, 2016-03-23)
    Background: Previous studies have relied on international spirometry criteria to diagnose COPD in patients with lung cancer without considering the effect lung cancer might have on spirometric results. The aim of this study ...
  • A generalization of weight polynomials to matroids 

    Johnsen, Trygve; Roksvold, Jan Nyquist; Verdure, Hugues (Tidsskriftartikkel; Peer reviewed, 2015-11-11)
    Generalizing polynomials previously studied in the context of linear codes, we define weight polynomials and an enumerator for a matroid M. Our main result is that these polynomials are determined by Betti numbers associated ...
  • Multiphysics investigation of Ice Adhesion over PVC surface 

    Xue, Hui; Khawaja, Hassan Abbas (Conference object; Konferansebidrag, 2015-12-10)
    This work investigates the ice over a PVC (polyvinyl chloride also known as ‘PVC’) surface as a two-layer laminate model. In this study, ice was frozen over a PVC surface and allowed to adhere. The built samples were ...
  • Late summer sea ice segmentation with multi-polarisation SAR features in C- and X-band 

    Fors, Ane Schwenke; Brekke, Camilla; Doulgeris, Anthony Paul; Eltoft, Torbjørn; Renner, Angelika; Gerland, Sebastian (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-01)
    In this study we investigate the potential of sea ice segmentation by C- and X-band multi-polarisation synthetic aperture radar (SAR) features during late summer. Five high-resolution satellite SAR scenes were recorded ...
  • Sensitive on-chip methane detection with a cryptophane-A cladded Mach-Zehnder interferometer 

    Dullo, Firehun Tsige; Lindecrantz, Susan; Jagerska, Jana; Hansen, Jørn H; Engqvist, Stig Olov Magnus; Solbø, Stian; Hellesø, Olav Gaute (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-24)
    We report a methane sensor based on an integrated Mach-Zehnder interferometer, which is cladded by a styrene-acrylonitrile film incorporating cryptophane-A. Cryptophane-A is a supramolecular compound able to selectively ...
  • Multiphysicsbased Condition Monitoring of Composite Materials 

    Xue, Hui; Sharma, Puneet; Khawaja, Hassan Abbas (Conference object; Konferansebidrag, 2015-12-10)
    Composites are increasingly being used in products such as: automobiles, bridges, boats, drillships, offshore platforms, aircrafts and satellites. The increased usage of these composite materials and the fact that the ...
  • Optical transport, lifting and trapping of micro-particles by planar waveguides 

    Helle, Øystein Ivar; Ahluwalia, Balpreet Singh; Hellesø, Olav Gaute (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-03-03)
    Optical waveguides can be used to trap and transport micro-particles. The particles are held close to the waveguide surface by the evanescent field and propelled forward. We propose a new technique to lift and trap particles ...
  • Measuring the Sea Spray Flux using High-Speed Camera 

    Johansen, Jarle André; Edvardsen, Kåre; Sharma, Puneet; Khawaja, Hassan Abbas (Conference object; Konferansebidrag, 2015-12-10)
    The sea spray contains water droplets that are produced due to sea waves that collide with the marine structures as well as the breaking of waves due to the strong winds. Similarly, fog and precipitation at sea level may ...
  • Ambient air quality and the effects of air pollutants on otolaryngology in Beijing 

    Zhang, Fengying; Xu, Jin; Zhang, Ziying; Meng, Haiying; Wang, Li; Lu, Jinmei; Wang, Wuyi; Kraft, Thomas (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-07-09)
    Abstract To investigate temporal patterns, pollution concentrations and the health effects of air pollutants in Beijing we carried out time-series analyses on daily concentrations of ambient air pollutants and daily ...
  • How does relativity affect magnetically induced currents? 

    Berger, Raphael Johann Friedrich; Repisky, Michal; Komorovsky, Stanislav (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-07-23)
    Magnetically induced probability currents in molecules are studied in relativistic theory. Spin–orbit coupling (SOC) enhances the curvature and gives rise to a previously unobserved current cusp in AuH or small bulge-like ...
  • A generalization of Kung’s theorem 

    Johnsen, Trygve; Shiromoto, Keisuke; Verdure, Hugues (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-01)
    We give a generalization of Kung’s theorem on critical exponents of linear codes over a finite field, in terms of sums of extended weight polynomials of linear codes. For all i=k+1,…,ni=k+1,…,n, we give an upper bound on ...
  • Enforcing Privacy Policies with Meta-Code 

    Johansen, Håvard; Birrell, Eleanor; Van Renesse, Robbert; Schneider, Fred B.; Stenhaug, Magnus; Johansen, Dag (Konferansebidrag, 2015)
    This paper proposes a mechanism for expressing and enforcing security policies for shared data. Security policies are expressed as stateful meta-code operations; meta-code can express a broad class of policies, including ...
  • Submarine landform assemblages and sedimentary processes related to glacier surging in Kongsfjorden, Svalbard 

    Streuff, K.; Forwick, Matthias; Szczucinski, W.; Andreassen, Karin; O' Cofaigh, C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-21)
    High-resolution swath-bathymetry data from inner Kongsfjorden, Svalbard, reveal characteristic landform assemblages formed during and after surges of tidewater glaciers, and provide new insights into the dynamics of ...
  • Stanley-Reisner resolution of constant weight linear codes 

    Johnsen, Trygve; Verdure, Hugues (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-08)
    Given a constant weight linear code, we investigate its weight hierarchy and the Stanley–Reisner resolution of its associated matroid regarded as a simplicial complex. We also exhibit conditions on the higher weights ...
  • Betti numbers associated to the facet ideal of a matroid 

    Johnsen, Trygve; Roksvold, Jan Nyquist; Verdure, Hugues (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-06)
    To a matroid M with n edges, we associate the so-called facet ideal F(M)⊂k[x1,…,xn] , generated by monomials corresponding to bases of M. We show that when M is a graph, the Betti numbers related to an ℕ0-graded minimal ...
  • Bioprospecting around Arctic islands: Marine bacteria as rich source of biocatalysts 

    De Santi, Concetta; Altermark, Bjørn; de Pascale, Donatella; Willassen, Nils Peder (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-12-11)
    We have investigated the biotechnological potential of Arctic marine bacteria for their ability to produce a broad spectrum of cold-active enzymes. Marine bacteria exhibiting these features are of great interest for both ...
  • Middle to late Holocene paleoproductivity reconstructions for the western Barents Sea: a model-data comparison 

    Pathirana, Irene Dorothea; Knies, Jochen; Felix, Maarten; Mann, U.; Ellingsen, Ingrid H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-30)
    In this study we focus on late Holocene primary productivity (PP) variability in the western Barents Sea and its response to variable sea ice coverage by combining PP reconstructed from several sediment cores with ...

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