• Higher dimensional bivectors and classification of the Weyl operator 

      Hervik, Sigbjørn; Coley, Alan (Journal article; Peer reviewed, 2010)
      We develop the bivector formalism in higher dimensional Lorentzian spacetimes. We define the Weyl bivector operator in a manner consis- tent with its boost-weight decomposition. We then algebraically classify the Weyl ...
    • Hyper-Kähler fourfolds and Kummer surfaces 

      Ranestad, Kristian; Kapustka, Michal; Kapustka, Grzegorz; Iliev, Atanas (Journal article; Peer reviewed, 2017-09)
      We show that a Hilbert scheme of conics on a Fano fourfold double cover of PP2xP2 ramified along a divisor of bidegree (2,2) admits a ℙ 1‐fibration with base being a hyper‐Kähler fourfold. We investigate the geometry of ...
    • Hyperkähler fourfolds and Kummer surfaces 

      Ranestad, Kristian; Iliev, Atanas; Kapustka, Grzegorz; Kapustka, Michal Jakub (Journal article; Peer reviewed, 2017-09)
    • The identity of the frog fly Caiusa coomani Séguy, 1948 (Diptera, Calliphoridae) 

      Rognes, Knut (Journal article; Peer reviewed, 2011-01-10)
    • Inflation with stable anisotropic hair 

      Hervik, Sigbjørn; Mota, David F.; Thorsrud, Mikjel (Journal article; Peer reviewed, 2011)
      Recently an inflationary model with a vector field coupled to the inflaton was proposed and the phenomenology studied for the Bianchi type I spacetime. It was found that the model demonstrates a counter-example to the ...
    • Inhomogeneous chiral condensate in the quark-meson model 

      Adhikari, Prabal; Andersen, Jens Oluf; Kneschke, Patrick (Journal article; Peer reviewed, 2017-07-24)
    • Inverse magnetic catalysis and regularization in the quark-meson model 

      Andersen, Jens O.; Naylor, William R.; Tranberg, Anders (Journal article; Peer reviewed, 2015-02)
      Motivated by recent work on inverse magnetic catalysis at finite temperature, we study the quark-meson model using both dimensional regularization and a sharp cutoff. We calculate the critical temperature for the chiral ...
    • Killing superalgebras for Lorentzian four-manifolds 

      de Medeiros, Paul; Figueroa-O’Farrill, José; Santi, Andrea (Journal article; Peer reviewed, 2016-06)
      We determine the Killing superalgebras underpinning field theories with rigid unextended supersymmetry on Lorentzian four-manifolds by re-interpreting them as filtered deformations of Z-graded subalgebras with maximum odd ...
    • Leptogenesis in crossing and runaway regimes. 

      Hohenegger, Andreas; Kartavtsev, Alexander (Journal article; Peer reviewed, 2014-07)
      We study the impact of effective thermal masses and widths on resonant leptogenesis. We identify two distinct possibilities which we refer to as ‘crossing’ and ‘runaway’ regimes. In the runaway regime the mass difference ...
    • Lil3 assembles with proteins regulating chlorophyll synthesis in barley 

      Mork-Jansson, Astrid; Bue, Ann Kristin; Gargano, Daniela; Furnes, Clemens; Reisinger, Veronika; Arnold, Janine; Kmiec, Karol; Eichacker, Lutz Andreas (Journal article; Peer reviewed, 2015-06)
      The light-harvesting-like (LIL) proteins are a family of membrane proteins that share a chlorophyll a/b-binding motif with the major light-harvesting antenna proteins of oxygenic photoautotrophs. LIL proteins have been ...
    • Microwave-Assisted One-Pot Synthesis of Novel Polyarylpyrrole Derivatives of Expected Anticancer Activity 

      Younis, Ahmed; Hassan, Ali M; Mady, Mohamed Fawzy; El-Haddad, AF; FA, Yassin; Fayad, Mahmoud (Journal article, 2017)
      An efficient synthesis of Novel pyrrolederivatives was achieved via solventless reaction of chalcones 1(a-e) with different aldehydes 2(a-e) and ammonium acetate in the presence of sodium cyanide in one-pot under microwave ...
    • Mimicking orchids lure bees from afar with exaggerated ultraviolet signals 

      Scaccabarozzi, Daniela; Lunau, Klaus; Guzzetti, Lorenzo; Cozzolino, Salvatore; Dyer, Adrian G.; Tommasi, Nicola; Biella, Paolo; Galimberti, Andrea; Labra, Massimo; Bruni, Ilaria; Pattarini, Giorgio; Brundrett, Mark; Gagliano, Monica (Peer reviewed; Journal article, 2023-01)
      Flowers have many traits to appeal to pollinators, including ultraviolet (UV) absorbing markings, which are well-known for attracting bees at close proximity (e.g., <1 m). While striking UV signals have been thought to ...
    • A multiple-source air quality control model achieving a standard, defined by a vector-valued function 

      Gustafson, Sven-Åke (Conference object, 2009-07)
      Earlier papers by Gustafson, Kortanek, Sweigart and others describe models for controlling air pollution, consisting of chemically inert pollutants like sulphur dioxide. It was assumed that the concentration contributions ...
    • Natural peptides with antioxidant activity from Atlantic cod and Atlantic salmon residual material 

      Pampanin, Daniela M.; Haar, Marianne Bore; Sydnes, Magne Olav (Journal article; Peer reviewed, 2016-03)
      Summary. Water-soluble peptides/proteins with molecular weight below 10 kDa were isolated from residual material of cod (liver, skin, and cod mix i.e. skin, frames, and viscera), and salmon (skin, and salmon mix i.e. skin, ...
    • Note on the invariant classification of vacuum type D spacetimes 

      Coley, Alan; Hervik, Sigbjørn (Journal article; Peer reviewed, 2009-12)
      We illustrate the fact that the class of vacuum type D spacetimes which are I-non-degenerate are invariantly classified by their scalar polynomial curvature invariants.
    • On computational linear semi-infinite programming 

      Gustafson, Sven-Åke (Peer reviewed; Journal article, 2008-12)
    • On high-order perturbative calculations at finite density 

      Ghisoiu, Ioan; Gorda, Tyler; Kurkela, Aleksi; Romatschke, Paul; Säppi, Matias; Vuorinen, Aleksi (Journal article; Peer reviewed, 2017-02)
      We discuss the prospects of performing high-order perturbative calculations in systems characterized by a vanishing temperature but finite density. In particular, we show that the determination of generic Feynman integrals ...
    • On the algebraic classification of pseudo-Riemannian spaces 

      Hervik, Sigbjørn; Coley, Alan (Journal article; Peer reviewed, 2011-12)
      We consider arbitrary-dimensional pseudo-Riemannian spaces of signature (k, k + m). We introduce a boost-weight decomposition and define a number of algebraic properties (e.g. the Si- and N-properties) and present a ...
    • On-shell parameter fixing in the quark-meson model 

      Adhikari, Prabal; Andersen, Jens Oluf; Kneschke, Patrick (Journal article; Peer reviewed, 2017-02)
      The quark-meson model is often used as an effective low-energy model for QCD to study the chiral transition at finite temperature T and baryon chemical potential μB. The parameters in the quark-meson model can be found by ...
    • Optimization of acid catalyzed transesterification of jatropha and rapeseed oil with 1-butanol 

      Bynes, Adrian N.; Eide, Ingvar; Jørgensen, Kåre Bredeli (Peer reviewed; Journal article, 2014-08)
      The acid catalyzed transesterification of rapeseed and jatropha oil with 1-butanol was studied by varying temperature, reaction time, butanol/triglyceride ratio and the amount of sulfuric acid. A full factorial design ...