Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 178-197 of 838

  • Direct Pore-Scale Numerical Simulation of Microbially Induced Calcium Carbonate Precipitation 
    Razbani, Mohammad Amin; Jettestuen, Espen; Røyne, Anja (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Microbially induced calcium carbonate precipitation (MICP) is a promising method for eco-friendly solutions in geotechincal engineering. MICP involves highly coupled processes in geochemistry and bacterial metabolism that ...
  • Discerning between Different 'Oumuamua Models by Optical and Infrared Observations 
    Flekkøy, Eirik Grude; Brodin, Joachim Falck (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract The first interstellar object to be observed in our solar system, 1I/2017 U1 ’Oumuamua, combines the lack of observable cometary activity with an extra-gravitational acceleration. This has given rise to ...
  • Discovery of Variscan orogenic peridotites in the Pelvoux Massif (Western Alps, France) 
    Jacob, Jean-Baptiste; Janots, Emilie; Cordier, Carole; Guillot, Stéphane (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Small bodies of mantle-derived peridotites and other ultramafic rocks are commonly found in exhumed lower crustal units of collisional orogens. They provide a direct record of the complex evolution of the upper mantle ...
  • Disentangling effects of natural and anthropogenic drivers on forest net ecosystem production 
    Wang, You-Ren; Buchmann, Nina; Hessen, Dag Olav; Stordal, Frode; Erisman, Jan Willem; Vollsnes, Ane Victoria; Andersen, Tom; Dolman, Han (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Net Ecosystem Production (NEP) of forests is the net carbon dioxide (CO2) fluxes between land and the atmosphere due to forests' biogeochemical processes. NEP varies with natural drivers such as precipitation, air temperature, ...
  • Disentangling electron-boson interactions on the surface of a familiar ferromagnet 
    Røst, Håkon; Mazzola, Federico; Bakkelund, Johannes; Åsland, Anna Cecilie; Hu, Jinbang; Cooil, Simon Phillip; Polley, Craig; Wells, Justin William (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    We report energy renormalizations from electron-phonon and electron-magnon interactions in spin minority surface resonances on Ni(111). The different interactions are identified, disentangled, and quantified from the ...
  • Dislocation nucleation in the phase-field crystal model 
    Skogvoll, Vidar; Skaugen, Audun; Angheluta, Luiza; Viñals, Jorge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    We use the phase-field crystal model to study nucleation of edge dislocations in two dimensions under an applied stress field. A dislocation dipole nucleates under the applied stress, consistent with Burgers vector ...
  • Disorder-Induced Ordering in Gallium Oxide Polymorphs 
    Azarov, Alexander; Bazioti, Kalliopi; Venkatachalapathy, Vishnukanthan; Ponniah, Vajeeston; Monakhov, Eduard; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    olymorphs are common in nature and can be stabilized by applying external pressure in materials. The pressure and strain can also be induced by the gradually accumulated radiation disorder. However, in semiconductors, the ...
  • Dispersion forces in inhomogeneous planarly layered media: A one-dimensional model for effective polarizabilities 
    Fiedler, Johannes; Spallek, Fabian; Thiyam, Priyadarshini; Persson, Clas; Boström, Mathias; Walter, Michael; Buhmann, Stefan Yoshi (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Dispersion forces such as van der Waals forces between two microscopic particles, the Casimir-Polder forces between a particle and a macroscopic object, or the Casimir force between two dielectric objects are well studied ...
  • Dissolution phase diagram in radial geometry 
    Xu, Le; Szymczak, Piotr; Toussaint, Renaud; Flekkøy, Eirik Grude; Måløy, Knut Jørgen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Fractures play an important role as flow paths in porous media. When an undersaturated reactive fluid is flowing in a fracture, the dissolution process will alter the flow paths locally. Dissolution patterns grow slowly, ...
  • Dissolution rate variability at carbonate surfaces: 4D X-ray micro-tomography and stochastic modeling investigations 
    Guren, Marthe Grønlie; Renard, Francois; Noiriel, Catherine (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We provide a detailed 3D characterization of the geometry evolution and dissolution rate mapping at the surface of four carbonate samples, namely a calcite spar crystal, two limestone rock fragments, and an aragonite ooid, ...
  • Distinguishing space groups by electron channelling: centrosymmetric full-Heusler or non-centrosymmetric half-Heusler? 
    Hansen, Vidar; Kosinskiy, Andrey; Taftø, Johan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    X-ray emission under electron-channelling conditions is used to distinguish between a non-centrosymmetric half-Heusler and a centrosymmetric full-Heusler crystal. For TiCo 1.5+ xSn the space-group determination based on a ...
  • Disturbance-based management of ecosystem services and disservices in partial nitritation-anammox biofilms 
    Suarez, Carolina; Sedlacek, Christopher J.; Gustavsson, David J. I.; Eiler, Alexander; Modin, Oskar; Hermansson, Malte; Persson, Frank (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract The resistance and resilience provided by functional redundancy, a common feature of microbial communities, is not always advantageous. An example is nitrite oxidation in partial nitritation-anammox (PNA) reactors ...
  • DNA copy number motifs are strong and independent predictors of survival in breast cancer 
    Pladsen, Arne Valebjørg; Nilsen, Gro; Rueda, Oscar M.; Aure, Miriam Ragle; Borgan, Ørnulf; Liestøl, Knut; Vitelli, Valeria; Frigessi Di Rattalma, Arnoldo; Langerød, Anita; Mathelier, Anthony; Engebråten, Olav; Kristensen, Vessela N.; Wedge, David C.; Van Loo, Peter; Caldas, Carlos; Børresen-Dale, Anne-Lise; Russnes, Hege Elisabeth Giercksky; Lingjærde, Ole Christian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Somatic copy number alterations are a frequent sign of genome instability in cancer. A precise characterization of the genome architecture would reveal underlying instability mechanisms and provide an instrument for outcome ...
  • Do DOM quality and origin affect the uptake and accumulation of lipid-soluble contaminants in coastal filter feeders? An experimental simulation of teflubenzuron exposure to blue mussels 
    Schultze, Sabrina; Andersen, Tom; Knudtzon, Nina Cathrine; Ruus, Anders; Rundberget, Jan Thomas; Brooks, Steven; Poste, Amanda Elizabeth; Hessen, Dag Olav; Borgå, Katrine (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The increased export of terrestrial dissolved organic matter (terrDOM) to coastal marine ecosystems may affect local filter feeders and the local food web via the altered uptake of organic material and associated contaminants. ...
  • Dominant acceptors in Li doped, magnetron deposited Cu2O films 
    Nyborg, Martin; Karlsen, Kjetil; Bergum, Kristin; Monakhov, Eduard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Cu 2 O films deposited by reactive magnetron sputtering with varying Li concentrations have been investigated by a combination of temperature-dependent Hall effect measurement and thermal admittance spectroscopy. As measured ...
  • Dominant defects and carrier transport in single crystalline cuprous oxide: A new attribution of optical transitions 
    Nyborg, Martin; Kolevatov, Ilia; Vasquez, Geraldo Cristian; Bergum, K.; Monakhov, E. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Electronic properties of single crystal (111) Cu2O wafers have been investigated using a number of complementary techniques. Secondary ion mass spectrometry has shown significant presence of hydrogen and nitrogen. ...
  • Dominating migration barrier for intrinsic defects in gallium oxide: Dose-rate effect measurements 
    Azarov, Alexander; Venkatachalapathy, Vishnukanthan; Monakhov, Eduard; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    Ion bombardment provides an opportunity to study basic properties of intrinsic defects in materials since the radiation-induced disorder accumulation depends on the balance between defect generation and migration rates. ...
  • Donors and polaronic absorption in rutile TiO2 single crystals 
    Weiser, Philip Michael; Zimmermann, Christian; Bonkerud, Julie; Vines, Lasse; Monakhov, Eduard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    We have used a combination of optical absorption and electrical conductivity measurements to study the effect of the main donor on small polarons in rutile TiO2 single crystals rendered n-type conductive by hydrogenation ...
  • Double Perovskite Cobaltites Integrated in a Monolithic and Noble Metal-Free Photoelectrochemical Device for Efficient Water Splitting 
    Zhu, Junjie; Guðjónsdóttir, Jónína; Strandbakke, Ragnar; Both, Kevin Gregor; Aarholt, Thomas; Almeida Carvalho, Patricia; Sørby, Magnus Helgerud; Jensen, Ingvild Julie Thue; Guzik, Matylda N.; Norby, Truls Eivind; Haug, Halvard; Chatzitakis, Athanasios Eleftherios (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Water photoelectrolysis has the potential to produce renewable hydrogen fuel, therefore addressing the intermittent nature of sunlight. Herein, a monolithic, photovoltaic (PV)-assisted water electrolysis device of minimal ...
  • Drainage explains soil liquefaction beyond the earthquake near-field 
    Ben-Zeev, Shahar; Goren, Liran; Toussaint, Renaud; Aharonov, Einat (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Earthquake-induced soil-liquefaction is a devastating phenomenon associated with loss of soil rigidity due to seismic shaking, resulting in catastrophic liquid-like soil deformation. Traditionally, liquefaction ...