Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 427-446 of 838

  • Jahn-Teller active fluoroperovskites ACrF3 (A=Na+, K+): Magnetic and thermo-optical properties 
    Bernal, Fabian Leonardo Martinez; Lundvall, Fredrik; Kumar, Susmit; Hansen, Per-Anders S.; Wragg, David S.; Fjellvåg, Helmer; Løvvik, Ole Martin (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    Chromium (II) fluoroperovskites A CrF 3 ( A = Na + , K + ) are strongly correlated Jahn-Teller active materials at low temperatures. In this paper, we examine the role that the A -site ion plays in this family of ...
  • JASPAR 2024: 20th anniversary of the open-access database of transcription factor binding profiles 
    Rauluseviciute, Ieva; Riudavets-Puig, Rafael; Blanc-Mathieu, Romain; Castro-Mondragon, Jaime Abraham; Ferenc, Katalin Terezia; Kumar, Vipin; Lemma, Roza Berhanu; Lucas, Jeremy; Cheneby, Jeanne; Baranasic, Damir; Khan, Aziz; Fornes, Oriol; Gundersen, Sveinung; Johansen, Morten; Hovig, Eivind; Lenhard, Boris; Sandelin, Albin; Wasserman, Wyeth W.; Parcy, François; Mathelier, Anthony (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    JASPAR (https://jaspar.elixir.no/) is a widely-used open-access database presenting manually curated high-quality and non-redundant DNA-binding profiles for transcription factors (TFs) across taxa. In this 10th release and ...
  • Juncus bulbosus nuisance growth in oligotrophic freshwater ecosystems: Different triggers for the same phenomenon in rivers and lakes? 
    Schneider, Susanne Claudia; Moe, Therese Fosholt; Hessen, Dag Olav; Kaste, Øyvind (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2013)
    Since the 1980s nuisance growth of the aquatic macrophyte Juncus bulbosus has been observed in an increasing number of rivers and lakes in Europe. Freshwater acidification, lake liming, as well as the impact of hydropower ...
  • Kinetics modeling of the carbon vacancy thermal equilibration in 4H-SiC 
    Ayedh, Hussein Mohammed Hussein; Nipoti, Roberta; Hallen, Anders; Svensson, Bengt Gunnar (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    The carbon vacancy (VC) is a major limiting-defect of minority carrier lifetime in n-type 4H-SiC epitaxial layers and it is readily formed during high temperature processing. In this study, a kinetics model is put forward ...
  • La1-xSrxMO3 (M = Co, Mn, Cr) interconnects in a 4-leg all-oxide thermoelectric generator at high temperatures 
    Madathil, Reshma Krishnan; Schuler, Raphael; Norby, Truls (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We herein report tests at high temperatures of a 4-leg oxide thermoelectric generator consisting of two pairs of p-type Ni0.98Li0.02O (Li–NiO) and n-type Zn0.98Al0.02O (Al–ZnO), assembled with various conducting perovskite ...
  • La2Ce2O7 doped with alkaline earth elements: Phase behavior, hydration and electrical properties 
    Ismail, Sara Adeeba; Jiang, Lulu; Zhong, Peng; Norby, Truls Eivind; Han, Donglin (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    La2Ce2O7 is known to be a disordered fluorite, i.e., 50% La-doped CeO2, exhibiting oxide ion conduction with contributions from protons in wet atmospheres and minority electrons under reducing conditions. Here, we report ...
  • Laboratory Landquakes: Insights From Experiments Into the High‐Frequency Seismic Signal Generated by Geophysical Granular Flows 
    Arran, Matthew I.; Mangeney, Anne; De Rosny, Julien; Farin, Maxime; Toussaint, Renaud; Roche, Olivier (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Geophysical granular flows exert basal forces that generate seismic signals, which can be used to better monitor and model these severe natural hazards. A number of empirical relations and existing models link these signals' ...
  • Laboratory Modeling of Coeval Brittle and Ductile Deformation During Magma Emplacement Into Viscoelastic Rocks. 
    Bertelsen, Håvard Svanes; Rogers, Benjamin David; Galland, Olivier; Dumazer, Guillaume Henri; Benanni, Alexandre Abbana (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The mechanics of magma emplacement in the Earth's crust corresponds to the flow of a viscous fluid into a deforming solid. The Earth's crust through which magma is emplaced is visco-elasto-plastic, and field observations ...
  • Land-cover, climate and fjord morphology drive differences in organic matter and nutrient dynamics in two contrasting northern river-fjord systems 
    Schultze, Sabrina; Andersen, Tom; Hessen, Dag Olav; Ruus, Anders; Borgå, Katrine; Poste, Amanda (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Climate and land-use changes are leading to impacts on individual ecosystems as well as shifts in transfer dynamics between interconnected systems. At the land-ocean interface, changes in riverine inputs of organic matter ...
  • Land-use dominates climate controls on nitrogen and phosphorus export from managed and natural Nordic headwater catchments 
    de Wit, Heleen A; Lepistö, Ahti; Marttila, Hannu; Wenng, Hannah; Bechmann, Marianne; Blicher-Mathiesen, Gitte; Eklöf, Karin; Futter, Martyn N.; Kortelainen, Pirkko; Kronvang, Brian; Kyllmar, Katarina; Rakovic, Jelena (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Agricultural, forestry‐impacted and natural catchments are all vectors of nutrient loading in the Nordic countries. Here, we present concentrations and fluxes of total nitrogen (totN) and phosphorus (totP) from 69 Nordic ...
  • Lanthanum strontium cobaltite as interconnect in oxide thermoelectric generators 
    Madathil, Reshma Krishnan; Norby, Truls Eivind (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Issues related to use of metallic interconnects in oxide thermoelectric generators (TEGs) need to be addressed to secure performance and durability. Metal interconnects suffer from high cost of noble metals or chemical ...
  • Large-scale, flat-lying mafic intrusions in the Baltican crust and their influence on basement deformation during the Caledonian orogeny 
    Lescoutre, Rodolphe; Almqvist, Bjarne; Koyi, Hemin; Berthet, Théo; Hedin, Peter; Galland, Olivier; Brahimi, Sonia; Lorenz, Henning; Juhlin, Christopher (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract The Fennoscandian Shield in central Sweden displays a complex structural and compositional architecture that is mainly related to the Proterozoic history of the Baltica paleocontinent. In its western ...
  • Large-sized ichthyosaurs from the Lower Saurian niveau of the Vikinghøgda Formation (Early Triassic), Marmierfjellet, Spitsbergen 
    Engelschiøn, Victoria Sjøholt; Delsett, Lene Liebe; Roberts, Aubrey Jane; Hurum, Jørn Harald (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Humeri of Pessopteryx nisseri and vertebrae referred to Cymbospondylus sp. are described from the Lower Saurian niveau at Marmierfjellet, Spitsbergen. This is the most well-preserved Cymbospondylus material described from ...
  • Lateral straggling of implanted aluminum in 4H-SiC 
    Müting, Johanna; Bobal, Viktor; Sky, Thomas Neset; Vines, Lasse; Grossner, Ulrike (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The implantation of aluminum into 4H-SiC is studied using secondary ion mass spectrometry. In particular, two-dimensional concentration profiles are obtained, which allow the investigation of lateral straggling and its ...
  • Lateral thermokarst patterns in permafrost peat plateaus in northern Norway 
    Martin, Leo Celestin Paul; Nitzbon, Jan; Scheer, Johanna; Aas, Kjetil Schanke; Eiken, Trond; Langer, Moritz; Filhol, Simon; Etzelmüller, Bernd; Westermann, Sebastian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Subarctic peatlands underlain by permafrost contain significant amounts of organic carbon. Our ability to quantify the evolution of such permafrost landscapes in numerical models is critical for providing robust predictions ...
  • Lattice thermal conductivity of half-Heuslers with density functional theory and machine learning: Enhancing predictivity by active sampling with principal component analysis 
    Tranås, Rasmus André; Løvvik, Ole Martin; Tomic, Oliver; Berland, Kristian (Journal article / Tidsskriftartikkel / SubmittedVersion, 2021)
    Low lattice thermal conductivity is essential for high thermoelectric performance of a material. Lattice thermal conductivity is often computed using density functional theory (DFT), typically at a high computational cost. ...
  • Legemiddel- og kosttilskuddbruk i norsk elite ishockey. 
    Christensen, Sofie (Master thesis / Masteroppgave, 2023)
  • Li and group-III impurity doping in ZnSnN2: Potential and limitations 
    Olsen, Vegard Skiftestad; Frodason, Ymir Kalmann; Hommedal, Ylva Knausgård; Nielsen, Dina Marie; Weiser, Philip Michael; Johansen, Klaus Magnus H; Lee, In-Hwan; Kuznetsov, Andrej; Vines, Lasse (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    II–IV nitrides and their alloys represent an earth-abundant and potentially cost-efficient alternative to the well-developed AlN-GaN-InN system. A major drawback with the II–IV nitrides is that ZnSnN2, the lowest band gap ...
  • LiF by atomic layer deposition—Made easy 
    Kvalvik, Julie Nitsche; Kvamme, Kristian Breivik; Almaas, Kjetil; Ruud, Amund; Sønsteby, Henrik Hovde; Nilsen, Ola (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Lithium fluoride (LiF) is an integral part of UV optics. Recently, it has also gained attention for its role in the solid-electrolyte interphase on the anode of lithium-ion batteries. Atomic layer deposition (ALD) is the ...
  • Life history adaptations to fluctuating environments: Combined effects of demographic buffering and lability 
    Le Coeur, Christie; Yoccoz, Nigel; Salguero-Gómez, Roberto; Vindenes, Yngvild (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Demographic buffering and lability have been identified as adaptive strategies to optimise fitness in a fluctuating environment. These are not mutually exclusive, however, we lack efficient methods to measure their relative ...