Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 156-175 of 838

  • Defects and polaronic electron transport in Fe2WO6 
    Schuler, Raphael; Norby, Truls Eivind; Fjellvåg, Helmer (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    We report the synthesis of phase pure Fe2WO6 and its structural characterization by high quality synchrotron X-ray powder diffraction, followed by studies of electric and thermoelectric properties as a function of temperature ...
  • Defects in semiconductors 
    Vines, Lasse; Monakhov, Eduard; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
  • Deficit of homozygosity among 1.52 million individuals and genetic causes of recessive lethality 
    Oddsson, Asmundur; Sulem, Patrick; Sveinbjornsson, Gardar; Arnadottir, Gudny A.; Steinthorsdottir, Valgerdur; Halldorsson, Gisli H.; Atlason, Bjarni A.; Oskarsson, Gudjon R.; Helgason, Hannes; Nielsen, Henriette Svarre; Westergaard, David; Karjalainen, Juha; Katrinardottir, Hildigunnur; Fridriksdottir, Run; Jensson, Brynjar O.; Tragante, Vinicius; Ferkingstad, Egil; Jónsson, Hákon; Gudjonsson, Sigurjon A.; Beyter, Doruk; Moore, Kristjan H.S.; Thordardottir, Helga B.; Kristmundsdottir, Snædis; Stefansson, Olafur A.; Rantapää Dahlqvist, Solbritt; Sonderby, Ida Elken; Didriksen, Maria; Stridh, Pernilla; Haavik, Jan; Tryggvadottir, Laufey; Frei, Oleksandr; Walters, G. Bragi; Kockum, Ingrid; Hjalgrim, Henrik; Olafsdottir, Thorunn A; Selbæk, Geir; Nyegaard, Mette; Erikstrup, Christian; Brodersen, Thorsten; Sævarsdottir, Sædis; Olsson, Tomas; Nielsen, Kaspar Rene; Haraldsson, Àsgeir; Bruun, Mie Topholm; Hansen, Thomas Folkmann; Steingrimsdottir, Thora; Jacobsen, Rikke Louise; Lie, Rolv T.; Djurovic, Srdjan; Alfredsson, Lars; Portilla, A.L.; Brunak, Søren; Havdahl, Alexandra; Andreassen, Ole (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Genotypes causing pregnancy loss and perinatal mortality are depleted among living individuals and are therefore difficult to find. To explore genetic causes of recessive lethality, we searched for sequence variants ...
  • Deformation evolves from shear to extensile in rocks due to energy optimization 
    McBeck, Jessica Ann; Cordonnier, Benoit; Cooke, Michele; Fattaruso, Laura; Renard, Francois (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Determining how fracture network development leads to macroscopic failure in heterogeneous materials may help estimate the timing of failure in rocks in the upper crust as well as in engineered structures. The ...
  • Deformation precursors to catastrophic failure in rocks 
    McBeck, Jessica Ann; Aiken, John Mark; Mathiesen, Joachim; Ben-Zion, Yehuda; Renard, Francois (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Forecasting the timing of catastrophic failure, such as crustal earthquakes, has been a central concern for centuries. Such forecasting requires identifying signals that evolve or accelerate in the precursory phase leading ...
  • Deposition and characterization of lithium doped direct current magnetron sputtered Cu2O films 
    Nyborg, Martin; Azarov, Alexander; Bergum, Kristin; Monakhov, Eduard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
  • Design of a practical and compact mm-wave MIMO system with optimized capacity and phased arrays 
    Cella, Tommaso; Orten, Pål; Ekman, Torbjörn (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    In this paper we evaluate the feasibility of short range outdoor mm-wave MIMO links in the 70 GHz portion of the E-band (71–76 GHz). We use phased arrays in order to strongly reduce the impact of the multipath components, ...
  • Design of experiments approach to luminescent CaMoO4 by atomic layer deposition 
    Kvalvik, Julie Nitsche; Hansen, Per-Anders Stensby; Nilsen, Ola (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Atomic layer deposition (ALD) is evolving beyond binary compounds to complex oxides and doped structures, taking advantage of the nanometer precision ALD provides. In practice, the development of complex ALD-processes ...
  • Design, calibration, and performance of a uniaxial pressure cell for neutron scattering studies of quantum magnetism 
    Sandberg, L.I.; Haubro, M.L.; Krighaar, K.M.L.; Edberg, R.; Fjellvåg, Ingrid Marie Bakke; Guthrie, M.; Holmes, A.T.; Mangin-Thro, L.; Wildes, A.; Henelius, P.; Lefmann, K.; Deen, P.P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We provide an overview of a pressure cell designed to apply uniaxial pressure to single crystals for the study, by neutron scattering techniques, of strongly correlated magnetic systems and, in particular, quantum magnets. ...
  • Designing Pd and Ni Catalysts for Cross-Coupling Reactions by Minimizing Off-Cycle Species 
    Balcells, David; Nova, Ainara (Journal article / Tidsskriftartikkel / SubmittedVersion, 2018)
    This Perspective presents an overview on recent experimental and computational studies on the off-cycle reactions of palladium- and nickel-catalyzed cross-couplings. Several reactions entering or leaving the catalytic cycle ...
  • Detecting Early-Stage Cohesion Due to Calcium Silicate Hydration with Rheology and Surface Force Apparatus 
    Liberto, Teresa; Nenning, Andreas; Bellotto, Maurizio; Dalconi, Maria Chiara; Dworschak, Dominik; Kalchgruber, Lukas; Robisson, Agathe; Valtiner, Markus; Dziadkowiec, Joanna (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Extremely robust cohesion triggered by calcium silicate hydrate (C–S–H) precipitation during cement hardening makes concrete one of the most commonly used man-made materials. Here, in this proof-of-concept study, we seek ...
  • Determination of atomic positions and polar direction in half-Heusler material Sb1- xSnxTi1-y-zHfyZrzCo using electron channeling 
    Hansen, Vidar; Echevarria-Bonet, Cristina; Minde, Mona Wetrhus; Taftø, Johan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Variation of electron-induced x-ray emission with the crystal direction of an incoming electron beam (channeling) is used to study the crystal site preference of different elements in a promising thermoelectric half-Heusler ...
  • Development of crystallographic preferred orientation during cataclasis in low-temperature carbonate fault gouge 
    Demurtas, Matteo; Smith, Steven A.; Prior, D.J.; Spagnuolo, Elena; Di Toro, Giulio (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    Grain size reduction due to cataclasis is a key process controlling fault frictional properties during the seismiccycle. We investigated the role of cleavage planes on fracturing and microstructural evolution during ...
  • Development of custom made bimetallic alloy model systems based on platinum-rhodium for heterogeneous catalysis 
    Kumar, Susmit; Waller, David; Fjellvåg, Helmer; Sjåstad, Anja Olafsen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The current study extends the insight into solid-state diffusion in alloys of the Platinum Group Metals (PGMs). Thereby, we pave the way for tailor making surface compositions of binary platinum (Pt) – rhodium (Rh) model ...
  • Diazotroph Genomes and Their Seasonal Dynamics in a Stratified Humic Bog Lake 
    Fernandez, Leyden; Peura, Sari; Eiler, Alexander; Linz, Alexandra M; McMahon, Kathrine D; Bertilsson, Stefan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Aquatic N-fixation is generally associated with the growth and mass development of Cyanobacteria in nitrogen-deprived photic zones. However, sequenced genomes and environmental surveys suggest active aquatic N-fixation ...
  • Different roles of environmental selection, dispersal, and drift in the assembly of intestinal microbial communities of freshwater fish with and without a stomach 
    Zha, Yinghua; Eiler, Alexander; Lindström, Eva S.; Svanback, Richard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The composition of intestinal microbiota commonly varies among animal hosts and may affect host health. However, we have limited knowledge about the different relative roles of assembly processes, such as drift, dispersal ...
  • Diffusion and configuration of Li in ZnO 
    Knutsen, Knut Erik; Johansen, Klaus Magnus H; Neuvonen, Pekka Tapio; Svensson, Bengt Gunnar; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Diffusion of Li into ZnO from an “infinite” surface source under oxygen-rich conditions is studied using secondary ion mass spectrometry. The Li concentration-versus-depth profiles exhibit a distinct and sharp drop, which ...
  • Diffusion of indium in single crystal zinc oxide: a comparison between group III donors 
    Sky, Thomas Neset; Johansen, Klaus Magnus H; Frodason, Ymir Kalmann; Aarholt, Thomas; Riise, Heine Nygard; Prytz, Øystein; Svensson, Bengt Gunnar; Vines, Lasse (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
  • Diffusion of Sn donors in β-Ga2O3 
    Frodason, Ymir Kalmann; Krzyzaniak, Patryk Piotr; Vines, Lasse; Varley, Joel Basile; Van De Walle, Chris G.; Johansen, Klaus Magnus H (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Diffusion of the n-type dopant Sn in β-Ga2O3 is studied using secondary-ion mass spectrometry combined with hybrid functional calculations. The diffusion of Sn from a Sn-doped bulk substrate with surface orientation (001) ...
  • Diffusion-Driven Frictional Aging in Silicon Carbide 
    Nordhagen, Even Marius; Sveinsson, Henrik Andersen; Malthe-Sørenssen, Anders (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Friction is the force resisting relative motion of objects. The force depends on material properties, loading conditions and external factors such as temperature and humidity, but also contact aging has ...