Now showing items 61-80 of 1542

    • Oxygen nonstoichiometry in (Ca2CoO3)0.62(CoO2): a combined experimental and computational study 

      Schrade, Matthias; Casolo, Simone; Graham, Paul J.; Ulrich, Clemens; Li, Sean; Løvvik, Ole Martin; Finstad, Terje; Norby, Truls (Peer reviewed; Journal article, 2014)
      The oxygen nonstoichiometry in the misfit calcium cobaltite (Ca2CoO3)0.62(CoO2) has been studied experimentally and by density functional theory (DFT) calculations. The standard oxidation enthalpy ΔH0Ox of oxygen deficient ...
    • Synthesis and in vitro cellular interactions of superparamagnetic iron nanoparticles with a crystalline gold shell 

      Bandyopadhyay, Sulalit; Singh, Gurvinder; Sandvig, Ioanna; Sandvig, Axel; Mathieu, Roland; Kumar, P Anil; Glomm, Wilhelm (Journal article; Peer reviewed, 2014)
      Fe@Au core–shell nanoparticles (NPs) exhibit multiple functionalities enabling their effective use in applications such as medical imaging and drug delivery. In this work, a novel synthetic method was developed and optimized ...
    • 3D modelling of β'' in Al-Mg-Si: towards an atomistic level ab initio based examination of a full precipitate enclosed in a host lattice 

      Ehlers, Flemming J H; Dumoulin, Stephane; Holmestad, Randi (Peer reviewed; Journal article, 2014)
      We extend a first principles based hierarchical multi-scale model scheme for describing a fully coherent precipitate in a host lattice to 3D simulations. As our test system, the needle-shaped main hardening Al–Mg–Si alloy ...
    • Online monitoring of aluminium primary production gas composition by use of Fourier-transform infrared spectroscopy 

      Aarhaug, Thor Anders; Ferber, Alain Marc C; Kjos, Ole Sigmund; Gaertner, Heiko (Journal article; Peer reviewed, 2014)
      Online monitoring of aluminium primary production raw gas is challenging due to the high concentration of HF in the presence of water. Tunable Diode Laser (TDL) analyzers retrofitted with sapphire optical windows allow for ...
    • Grid independence behaviour of fluidized bed reactor simulations using the Two Fluid Model: Effect of particle size 

      Cloete, Schalk Willem Petrus; Johansen, Stein Tore; Amini, Shahriar (Peer reviewed; Journal article, 2014)
      It is well known that particle size has a significant influence on the grid independence behaviour of fluidized bed reactor simulations carried out using the Two Fluid Model (TFM) approach. The general rule of thumb states ...
    • µSR study of Al-0.67%Mg-0.77%Si alloys 

      Nishimura, Katsuhiko; Matsuda, Kenji; Komaki, R; Nunomura, Norio; Wenner, Sigurd; Holmestad, Randi; Matsuzaki, Teiichiro; Watanabe, Isao; Pratt, Francis L.; Marioara, Calin Daniel (Peer reviewed; Journal article, 2014)
      Zero-field muon spin relaxation measurements were carried out with Al-0.67%Mg- 0.77%Si alloys in the temperature range from 20 K to 300 K. Observed relaxation spectra were compared with the relaxation functions calculated ...
    • Evaluation of energetic benefit for solid-liquid phase change CO2 absorbents 

      Aronu, Ugochukwu Edwin; Kim, Inna; Haugen, Geir (Peer reviewed; Journal article, 2014)
      A preliminary evaluation of desorption energy requirement for a precipitating system shows that precipitate formation results to a decrease in desorption energy requirement for a precipitating amino acid salt system compared ...
    • Atomic-resolution electron energy loss studies of precipitates in an Al-Mg-Si-Cu-Ag alloy 

      Wenner, Sigurd; Marioara, Calin Daniel; Ramasse, Quentin; Kepaptsoglou, Despoina Maria; Hage, Fredrik Sydow; Holmestad, Randi (Peer reviewed; Journal article, 2014)
      Aberration-corrected scanning transmission electron microscopy combined with electron energy loss spectroscopy has been used to determine the distribution of Cu and Ag atomic columns of precipitates in an Al–Mg–Si–Cu–Ag ...
    • Vale crude oil - properties and behaviour at sea 

      Hellstrøm, Kaja Cecilie; Andreassen, Irene (SINTEF Rapport;A25949, Research report, 2014)
    • CO2 Pipeline Integrity: Comparison of a Coupled Fluid-structure Model and Uncoupled Two-curve Methods 

      Aursand, Eskil; Dørum, Cato; Hammer, Morten; Morin, Alexandre; Munkejord, Svend Tollak; Nordhagen, Håkon Ottar (Peer reviewed; Journal article, 2014)
      One challenge in CCS is related to the prevention of running-ductile fracture in CO2-carrying pipelines. Commonly used tools for ensuring crack arrest in pipelines hinge mainly on semi-empirical models, which may not be ...
    • Atomic-resolution elemental mapping of precipitates in a 7449 aluminium alloy 

      Wenner, Sigurd; Marioara, Calin Daniel; Lefebvre, Williams; Ramasse, Quentin; Kepaptsoglou, Despoina Maria; Hage, Fredrik Sydow; Holmestad, Randi (Peer reviewed; Journal article, 2014)
      The high-strength weldable 7xxx series of aluminium alloys are of great importance to the aeronautics industry. Only recently, the complex structures of the AlZnMg hardening precipitates have been solved by HAADFSTEM imaging ...
    • Prediction of solute diffusivity in Al assisted by first-principles molecular dynamics 

      Løvvik, Ole Martin; Sagvolden, Espen; Li, Yanjun (Peer reviewed; Journal article, 2014)
      Ab initio calculations of the solid-state diffusivity of solute atoms in bulk aluminium have previously been based on transition state theory (TST), employing transition state searches and systematic assessments of single ...
    • A new and improved host-independent plasmid system for RK2-based conjugal transfer 

      Aakvik, Trine; Lale, Rahmi; Degnes, Kristin Fløgstad; Lando, Malin; Valla, Svein (Journal article, 2014)
      Bacterial conjugation is a process that is mediated either by a direct cell-to-cell junction or by formation of a bridge between the cells. It is often used to transfer DNA constructs designed in Escherichia coli to recipient ...
    • Synthesis and characterization of hybrid aminopropyl silane-based coatings on stainless steel substrates 

      Hanetho, Sidsel Meli; Kaus, Ingeborg; Simon, Christian; Bouzga, Aud Mjærum; Grande, Tor; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2014)
      Transparent and homogeneous hybrid aminopropyl silane-based coatings on steel were prepared by the sol–gel method using hydrolyzed γ-APS as a precursor. The coatings were fabricated by dip coating, and the effect of pH, ...
    • Clustering and Vacancy Behavior in High- and Low-Solute Al-Mg-Si Alloys 

      Wenner, Sigurd; Nishimura, Katsuhiko; Matsuda, Kenji; Matsuzaki, Teiichiro; Tomono, Dai; Pratt, Francis L.; Marioara, Calin Daniel; Holmestad, Randi (Journal article; Peer reviewed, 2014)
      The precipitate microstructure and vacancy distribution in Al-Mg-Si alloys with different amounts of solute and different heat treatments were investigated by transmission electron microscopy and muon spin relaxation ...
    • Aberration-corrected HAADF-STEM investigations of precipitate structures in Al-Mg-Si alloys with low Cu additions 

      Saito, Takeshi; Marioara, Calin Daniel; Andersen, Sigmund Jarle; Lefebvre, Williams; Holmestad, Randi (Peer reviewed; Journal article, 2014)
      Precipitates in a lean Al–Mg–Si alloy with low Cu addition (~0.10 wt.%) were investigated by aberration-corrected high angle annular dark field scanning transmission electron microscopy (HAADF-STEM). Most precipitates were ...
    • Brenselceller i ASKOs distribusjonsbiler. Forprosjekt for å verifisere egnethet 

      Zenith, Federico; Møller-Holst, Steffen; Thomassen, Magnus Skinlo (, Research report, 2014)
      Muligheten til å benytte et brenselcellesystem med dieselreformering i distribusjonsbiler ble undersøkt. ASKO Midt-Norge har biler i forskjellige størrelser og to typer kjølesystemer, nemlig med dieselaggregat og med ...
    • A new Norwegian bioeconomy based on cultivation and processing of seaweeds: Opportunities and R&D needs 

      Skjermo, Jorunn; Aasen, Inga Marie; Arff, Johanne; Broch, Ole Jacob; Carvajal, Ana Karina; Christie, Hartvig C; Forbord, Silje; Olsen, Yngvar; Reitan, Kjell Inge; Rustad, Turid; Sandquist, Judit; Solbakken, Roar; Steinhovden, Kristine; Wittgens, Bernd; Wolff, Robert; Handå, Aleksander (SINTEF Rapport;A25981, Research report, 2014)
    • GHGT-12 Performance of the IGCC with distributed feeding of H2 in the gas turbine burner 

      Jordal, Kristin; Anantharaman, Rahul; Gruber, Andrea; Peters, Thijs; Henriksen, Partow Pakdel; Berstad, David Olsson; Bredesen, Rune (Peer reviewed; Journal article, 2014)
      A main hurdle for realizing the IGCC with CO2 capture is the lack of gas turbines capable of burning hydrogen in an environmental-friendly, yet energy-efficient manner. With currently proposed combustion schemes an efficiency ...
    • Use of metal-organics based solvents for CO2 capture 

      Heyn, Richard H; Aronu, Ugochukwu Edwin; Vevelstad, Solrun Johanne; Hoff, Karl Anders; Didriksen, Terje; Arstad, Bjørnar; Blom, Richard (Journal article; Peer reviewed, 2014)
      There are a number of metal-organic compounds that can loosely be considered CA mimics and which are known to absorb CO2 directly from the atmosphere. The metal-organic complex, {Zn[N[CH2(2-py)]3](μ-OH)}2(NO3)2 (I), is one ...