Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 126-145 of 838

  • Conversion pathways of primary defects by annealing in proton-irradiated n-type 4H-SiC 
    Karsthof, Robert Michael; Bathen, Marianne Etzelmüller; Galeckas, Augustinas; Vines, Lasse (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The development of defect populations after proton irradiation of n-type 4H-SiC and subsequent annealing experiments is studied by means of deep level transient (DLTS) and photoluminescence spectroscopy. A comprehensive ...
  • Copper Pairing in the Mordenite Framework as a Function of the CuI/CuII Speciation 
    Deplano, Gabriele; Martini, Andrea; Signorile, Matteo; Borfecchia, Elisa; Crocellà, Valentina; Svelle, Stian; Bordiga, Silvia (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    A series of gas-phase reactants is used to treat a Cu-exchanged mordenite zeolite with the aim of studying the influence of the reaction environment on the formation of Cu pairs. The rearrangement of Cu ions to form ...
  • Copper-zeolites Prepared by Solid-state Ion Exchange - Characterization and Evaluation for the Direct Conversion of Methane to Methanol 
    Kvande, Karoline; Prodinger, Sebastian; Schlimpen, Fabian; Beato, Pablo; Pale, Patrick; Chassaing, Stefan; Svelle, Stian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Direct conversion of methane to methanol (MTM) over Cu-zeolites is a so-called “dream reaction” for the chemical industry. There is still a lot that can be done in order to optimize the reaction by e.g. achieving ...
  • Correlated annealing and formation of vacancy-hydrogen related complexes in silicon 
    Kolevatov, Ilia; Svensson, Bengt Gunnar; Monakhov, Eduard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We report on a deep level transient spectroscopy study of annealing kinetics of a deep, vacancy-hydrogen related level, labeled E5* , at 0.42 eV below the conduction band in hydrogen-implanted n-type silicon. The E5* ...
  • Correlation between surface chemistry and morphology of PtCu and Pt nanoparticles during oxidation-reduction cycle 
    Kalyva, Maria Evangelou; Sunding, Martin Fleissner; Gunnæs, Anette Eleonora; Diplas, Spyridon; Redekop, Evgeniy (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Process conditions during catalytic reactions induce significant changes in surface chemistry and structure of bi- (mono) metallic nanoparticles leading to their deactivation, and this can ultimately affect the reactions ...
  • COSC-2 - Drilling the basal décollement and underlying margin of palaeocontinent Baltica in the Paleozoic Caledonide Orogen of Scandinavia 
    Lorenz, Henning; Rosberg, Jan-Erik; Juhlin, Christopher; Klonowska, Iwona; Lescoutre, Rodolphe; Westmeijer, George; Almqvist, Bjarne S. G.; Anderson, Mark; Bertilsson, Stefan; Dopson, Mark; Kallmeyer, Jens; Kück, Jochem; Lehnert, Oliver; Menegon, Luca; Pascal, Christophe; Rejkjær, Simon; Roberts, Nick N. W. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    The Collisional Orogeny in the Scandinavian Caledonides (COSC) scientific drilling project aims to characterise the structure and orogenic processes involved in a major collisional mountain belt by multidisciplinary ...
  • Coulomb failure of Earth's brittle crust controls growth, emplacement and shapes of igneous sills, saucer-shaped sills and laccoliths. 
    Schmiedel, Tobias; Galland, Olivier; Haug, Øystein Thorden; Dumazer, Guillaume Henri; Breitkreuz, Christoph (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Tabular intrusions are common features in the Earth's brittle crust. They exhibit a broad variety of shapes, ranging from thin sheet intrusions (sills, saucer-shaped sills, cone sheets), to more massive intrusions (domed ...
  • Coupled dissolution-precipitation and growth processes on calcite, aragonite, and Carrara marble exposed to cadmium-rich aqueous solutions 
    Julia, Maude; Putnis, Christine V.; King, Helen E.; Renard, Francois (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2023)
    Calcium carbonate and cadmium-rich fluid interactions have been studied at the nano and microscale with fluid flow and static fluid conditions for three forms of CaCO3: calcite in single crystals of Iceland Spar, calcite ...
  • Coupling of crop and livestock production can reduce the agricultural GHG emission from smallholder farms 
    Xu, Xiangbo; Xu, Yan; Li, Jing; Lu, Yonglong; Jenkins, Alan; Ferrier, Robert C.; Li, Hong; Stenseth, Nils Christian; Hessen, Dag Olav; Zhang, Linxiu; Li, Chang; Gu, Baojing; Jin, Shuqin; Sun, Mingxing; Ouyang, Zhu; Mathijs, Erik (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Ensuring global food security and environmental sustainability is dependent upon the contribution of the world’s hundred million smallholder farms, but the contributions of smallholder farms to global agricultural greenhouse ...
  • Coupling of magnetoresistance switching and glassy magnetic state at the metal–insulator transition in Ruddlesden-Popper manganite Ca4Mn3O10 
    Periyasamy, Manimuthu; Fjellvåg, Øystein; Fjellvåg, Helmer; Sjåstad, Anja Olafsen (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    Electronic phase separation is a frequent ingredient of the physics of manganites for which the colossal magnetoresistance (CMR) phenomenon is at debate. We investigate the switchable magnetoresistance (MR) effect of the ...
  • cRacklet: a spectral boundary integral method library for interfacial rupture simulation 
    Roch, Thibault; Barras, Fabian; Geubelle, Philippe H.; Molinari, Jean-François (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    The study of dynamically propagating rupture along interfaces is of prime importance in various fields and system sizes, including tribology (nm to μm), engineering (mm to m) and geophysics (m to km) (Armstrong-Hélouvry ...
  • Craniofacial, dental, and molecular features of Pyle disease in a South African child 
    Chetty, Manogari; Roomaney, Imaan; Oosterwyk, Chandré; Manyisa, Noluthando; Bope, Christian Domilongo; Agenbag, Gloudi; Wonkam, Ambroise (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Introduction Pyle Disease (PD), or familial metaphyseal dysplasia [OMIM 265900], is a rare autosomal recessive condition leading to widened metaphyses of long bones and cortical bone thinning ...
  • Creep Burst Coincident With Faulting in Marble Observed in 4-D Synchrotron X-Ray Imaging Triaxial Compression Experiments 
    Renard, Francois; Kandula, Neelima; McBeck, Jessica Ann; Cordonnier, Benoit (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Faults in carbonate rocks show both seismic and aseismic deformation processes, leading to a wide range of slip velocities. We deformed two centimeter‐scale cores of Carrara marble at 25°C and imaged the nucleation and ...
  • Cross-sectional carrier lifetime profiling and deep level monitoring in silicon carbide films exhibiting variable carbon vacancy concentrations 
    Galeckas, Augustinas; Karsthof, Robert Michael; Gana, Kingsly; Kok, Angela; Bathen, Marianne Etzelmüller; Vines, Lasse; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    The carrier lifetime control over 150 μm thick 4H-SiC epitaxial layers via thermal generation and annihilation of carbon vacancy (VC) related Z1/2 lifetime killer sites is reported. The defect developments upon typical SiC ...
  • Cross-trait genome-wide association analysis of C-reactive protein level and psychiatric disorders 
    Hindley, Guy; Drange, Ole Kristian; Lin, Aihua; Kutrolli, Gleda; Shadrin, Alexey; Parker, Nadine; O'Connell, Kevin Sean; Rødevand, Linn; Cheng, Weiqiu; Bahrami, Shahram; Karadag, Naz; Holen, Børge; Jaholkowski, Piotr Pawel; Woldeyohannes, Markos Tesfaye; Djurovic, Srdjan; Dale, Anders M.; Frei, Oleksandr; Ueland, Thor; Smeland, Olav Bjerkehagen; Andreassen, Ole (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    C-reactive protein (CRP) tends to be elevated in individuals with psychiatric disorders. Recent findings have suggested a protective effect of the genetic liability to elevated CRP on schizophrenia risk and a causative ...
  • Crystal growth in confinement 
    Kohler, Felix; Pierre-Louis, Olivier; Dysthe, Dag Kristian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract The growth of crystals confined in porous or cellular materials is ubiquitous in Nature and forms the basis of many industrial processes. Confinement affects the formation of biominerals in living organisms, of ...
  • Crystal structure of LaSr3Fe3O9 and its phase relation with LaSr3Fe3O10 
    Fjellvåg, Øystein; Øygarden, Vegar; Sørby, Magnus Helgerud; Sjåstad, Anja Olafsen (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    The Ruddlesden-Popper phase LaSr3Fe3O10 and its reduced derivatives with nominal composition LaSr3Fe3O10–x, with 0 < x < 1.21, are described in detail with respect to crystal structure, magnetic order, thermal stability ...
  • Cu-loaded zeolites enable the selective activation of ethane to ethylene at low temperatures and pressure 
    Kvande, Karoline; Prodinger, Sebastian; Solemsli, Bjørn Gading; Bordiga, Silvia; Borfecchia, Elisa; Olsbye, Unni; Beato, Pablo; Svelle, Stian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Sending ethane over Cu-oxo sites in zeolites allows for the selective formation of ethylene in a stepwise reaction at mild conditions. Experimental results indicate that the reaction proceeds via the formation of ethanol ...
  • Cycling performance of silicon-carbon composite anodes enhanced through phosphate surface treatment 
    Gobena, Hana; Lai, Samson Yuxiu; Koposov, Alexey; Mæhlen, Jan Petter; Ghamouss, Fouad; Lemordant, Daniel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Silicon (Si)‐based anodes have long been viewed as the next promising solution to improve the performance of modern lithium‐ion batteries. However, the poor cycling stability of Si‐based anodes impedes their ...
  • Cyclometalated (N,C) Au(III) Complexes: The Impact of Trans Effects on Their Synthesis, Structure, and Reactivity 
    Holmsen, Marte Sofie Martinsen; Nova Flores, Ainara; Tilset, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The early years of gold catalysis were dominated by Au(I) complexes and inorganic Au(III) salts. Thanks to the development of chelating ligands, more sophisticated Au(III) complexes can now be easily prepared and handled. ...