Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 16-35 of 838

  • A Mechanistic Study of the Cu-catalyzed N-arylation of Hydantoin with Aryl(TMP)iodonium Salts 
    Nova Flores, Ainara; Berntsen, Linn Neerbye (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract The use of diaryliodonium salts in organic reactions has rapidly increased in the last decade because of their efficiency in arylation reactions. Despite this, mechanistic investigations are still scarce, particularly ...
  • A new software implementation of the Oslo method with rigorous statistical uncertainty propagation 
    Midtbø, Jørgen Eriksson; Zeiser, Fabio; Lima, Erlend; Larsen, Ann-Cecilie; Tveten, Gry Merete; Guttormsen, Magne Sveen; Garrote, F. L. Bello; Kvellestad, Anders; Renstrøm, Therese (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    The Oslo method comprises a set of analysis techniques designed to extract nuclear level density and average -decay strength function from a set of excitation-energy tagged -ray spectra. Here we present a new software ...
  • A peridynamic elasto-plastic damage model for ion-irradiated materials 
    Nowak, M.; Mulewska, K.; Azarov, Alexander; Kurpaska, L.; Ustrzycka, A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    This study presents the novel peridynamic constitutive relations formulated in order to predict the plastic deformation and damage evolution in irradiated materials. The plastic behaviour of the material in which radiation ...
  • A phase field crystal theory of the kinematics of dislocation lines 
    Skogvoll, Vidar; Angheluta, Luiza; Skaugen, Audun; Salvalaglio, Marco; Viñals, Jorge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We introduce a dislocation density tensor and derive its kinematic evolution law from a phase field description of crystal deformations in three dimensions. The phase field crystal (PFC) model is used to define the lattice ...
  • A sample cell for the study of enzyme-induced carbonate precipitation at the grain-scale and its implications for biocementation 
    Zehner, Jennifer Simone; Røyne, Anja; Sikorski, Pawel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Biocementation is commonly based on microbial-induced carbonate precipitation (MICP) or enzyme-induced carbonate precipitation (EICP), where biomineralization of CaCO3 in a granular medium is used to produce a sustainable, ...
  • A simplified pore-scale model for slow drainage including film-flow effects 
    Kozlowski Pitombeira Reis, Paula; Moura, Marcel; Linga, Gaute; Rikvold, Per Arne; Toussaint, Renaud; Flekkøy, Eirik Grude; Måløy, Knut Jørgen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Liquid-filled corners and capillary bridges can establish networks connecting seemingly isolated clusters during drainage in porous media. Coupled with drainage through the bulk of pores and throats, the flow through these ...
  • A toroidal Zr70 oxysulfate cluster and its diverse packing structures 
    Øien-Ødegaard, Sigurd; Bazioti, Kalliopi; Redekop, Evgeniy; Prytz, Øystein; Lillerud, Karl Petter; Olsbye, Unni (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Herein, we report the discovery of a toroidal inorganic cluster of zirconium(IV) oxysulfate of unprecedented size with the formula Zr70(SO4)58(O/OH)146⋅x(H2O) (Zr70), which displays different packing of ring units and thus ...
  • A unified field theory of topological defects and non-linear local excitations 
    Skogvoll, Vidar; Rønning, Jonas; Salvalaglio, Marco; Angheluta, Luiza (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Topological defects and smooth excitations determine the properties of systems showing collective order. We introduce a generic non-singular field theory that comprehensively describes defects and excitations in ...
  • A first-principle study of NaMPO4(M = Mn, Fe, Co, Ni) possible novelstructures as cathode materials for sodium-ion batteries: Structural andelectrochemical characterisation 
    Bianchini, Federico; Fjellvåg, Helmer; Vajeeston, Ponniah (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    Transition metal containing polyanion compounds are effective excellent electrode materials for sodium-ion batteries due to their high intrinsic electrochemical potentials and to the resulting high energy density. Iron ...
  • Ab Initio Atomistic Simulations of Ca-Perovskite Melting 
    Hernandez, Jean-Alexis; Mohn, Chris Erik; Guren, Marthe Grønlie; Baron, Marzena Anna; Trønnes, Reidar G (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Melting curves of Ca-perovskite (pure CaSiO3) were determined by ab initio density functional theory, using two solid-liquid coexistence methods and two free energy approaches, in the form of thermodynamic integration and ...
  • Absolute radiation tolerance of amorphous alumina coatings at room temperature 
    Zaborowska, A.; Kurpaska, L.; Clozel, M.; Olivier, E.J.; O'Connell, J.H.; Vanazzi, M.; Di Fonzo, Fonzo; Azarov, A.; Jóźwik, I.; Frelek-Kozak, M.; Diduszko, R.; Neethling, J.H.; Jagielski, J. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    In this study structural and mechanical properties of a 1 μm thick Al2O3 coating, deposited on 316L stainless steel by Pulsed Laser Deposition (PLD), subjected to high energy ion irradiation were assessed. Mechanical ...
  • Absorbing random walks interpolating between centrality measures on complex networks 
    Gurfinkel, Alexander Jacob; Rikvold, Per Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Centrality, which quantifies the importance of individual nodes, is among the most essential concepts in modern network theory. As there are many ways in which a node can be important, many different centrality measures ...
  • Acceptor complex signatures in oxygen-rich ZnO thin films implanted with chlorine ions 
    Azarov, Alexander; Galeckas, Augustinas; Venkatachalapathy, Vishnukanthan; Mei, Zengxia; Du, Xiaolong; Monakhov, Eduard; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    Spectroscopic identification of defects and impurities is crucial for understanding doping asymmetry issues in ZnO and, therefore, realization of true ZnO-based bipolar devices. Chlorine (Cl) is an amphoteric impurity in ...
  • Accuracy and efficiency of germline variant calling pipelines for human genome data 
    Zhao, Sen; Agafonov, Oleg; Azab, Abdulrahman; Stokowy, Tomasz; Hovig, Eivind (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Abstract Advances in next-generation sequencing technology have enabled whole genome sequencing (WGS) to be widely used for identification of causal variants in a spectrum of genetic-related disorders, and provided new ...
  • Acidity effect on benzene methylation kinetics over substituted H-MeAlPO-5 catalysts 
    Mortén, Magnus; Cordero Lanzac, Tomas; Cnudde, Pieter; Redekop, Evgeniy; Svelle, Stian; Van Speybroeck, Veronique; Olsbye, Unni (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Methylation of aromatic compounds is a key reaction step in various industrial processes such as the aromatic cycle of methanol-to-hydrocarbons chemistry. The study of isolated methylation reactions and of the influence ...
  • Acoustic Emissions of Nearly Steady and Uniform Granular Flows: A Proxy for Flow Dynamics and Velocity Fluctuations 
    Bachelet, V.; Mangeney, A.; Toussaint, Renaud; de Rosny, Rosny; Arran, M.I.; Farin, M.; Hibert, C. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract The seismic waves emitted during granular flows are generated by different sources: high frequencies by interparticle collisions and low frequencies by global motion and large scale deformation. To unravel these ...
  • Activation energy of silicon diffusion in gallium oxide: Roles of the mediating defects charge states and phase modification 
    Azarov, Alexander; Venkatachalapathy, Vishnukanthan; Vines, Lasse; Monakhov, Eduard; Lee, In-Hwan; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    Silicon (Si) is an efficient n-type dopant in gallium oxide (Ga2O3)—an ultra-wide bandgap semiconductor promising in a number of applications. However, in spite of the technological importance for device fabrication, the ...
  • Adjustable reach in a network centrality based on current flows 
    Gurfinkel, Aleks J.; Rikvold, Per Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Centrality, which quantifies the “importance” of individual nodes, is among the most essential concepts in modern network theory. Most prominent centrality measures can be expressed as an aggregation of influence flows ...
  • Advanced and Emerging Negative Electrodes for Li-Ion Capacitors: Pragmatism vs. Performance 
    Lai, Samson Yuxiu; Cavallo, Carmen; Abdelhamid, Muhammad; Lou, Fengliu; Koposov, Alexey (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Li-ion capacitors (LICs) are designed to achieve high power and energy densities using a carbon-based material as a positive electrode coupled with a negative electrode often adopted from Li-ion batteries. However, such ...
  • Al Implantation in SiC; Where Will the Ions Come to Rest? 
    Linnarsson, Margareta; Vines, Lasse; Hallen, Anders (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    In all implantations into crystalline targets, quite a few ions find a path along a crystal channel or plane, so called channeling, and these ions travel deep into the crystal. This paper treats aluminum (Al) implantation ...