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    • Oxidation-Enhanced Evaporation in High-Carbon Ferromanganese 

      Myklebust, Håkon A Hartvedt Olsen; Andersson, Stefan; Tranell, Gabriella (Peer reviewed; Journal article, 2021)
      Lifetime and reliability in realistic operating conditions are important parameters for the application of thin-film piezoelectric microelectromechanical systems (piezoMEMS) based on lead zirconate titanate (PZT). Humidity ...

    • Oxidative degradation of 2-ethanolamine: The effect of oxygen concentraton and temperature on product formation 

      Vevelstad, Solrun Johanne; Grimstvedt, Andreas Magnar; Elnan, Jørund; Silva, Eirik Falck da; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2013)
      Oxidative degradation experiments on 2-ethanolamine (MEA) were performed at four different oxygen concentrations and at two temperatures. MEA loss and degradation product build-up were measured. Increasing the temperature ...

    • Oxidative degradation of amines using a closed batch system 

      Vevelstad, Solrun Johanne; Grimstvedt, Andreas Magnar; Einbu, Aslak; Knuutila, Hanna; Silva, Eirik Falck da; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2013)
      Oxidative degradation experiments on five amines and two amino acids were performed in a new closed setup at atmospheric pressure. For most of the amines/amino acids significant degradation was not present under these ...

    • Oxidative degradation of triethylene glycol 

      Høisæter, Karen Karolina; Buvik, Vanja; Gonzalez, Susana Villa; Vevelstad, Solrun Johanne; Knuutila, Hanna Katariina (Journal article; Peer reviewed, 2024)
      Triethylene glycol (TEG) is unstable in the presence of oxygen and at high temperatures, though the degradation mechanisms occurring are not properly understood. In attempting to close some of the knowledge gaps, ...

    • Oxidative degradation of triethylene glycol 

      Høisæter, Karen Karolina; Buvik, Vanja; Gonzalez, Susana Villa; Vevelstad, Solrun Johanne; Knuutila, Hanna Katariina (Peer reviewed; Journal article, 2024)
      Triethylene glycol (TEG) is unstable in the presence of oxygen and at high temperatures, though the degradation mechanisms occurring are not properly understood. In attempting to close some of the knowledge gaps, ...

    • Oxidative Refining of Metallurgical Grade Silicon: Lab-Scale Measurements on the Overarching Refining Behavior of Ca and Al 

      Bjørnstad, Erlend Lunnan; Jung, In-Ho; Van Ende, Marie-Aline; Tranell, Gabriella (Peer reviewed; Journal article, 2022)
      Oxidative ladle refining (OLR) is the most widely used refining process for removal of dissolved Ca and Al in the industrial production of metallurgical grade silicon (MG-Si). Refining occurs by purging the silicon alloy ...

    • Oxidative status and intestinal health of gilthead sea bream (Sparus aurata) juveniles fed diets with different ARA/EPA/DHA ratios 

      Magalhaes, Rui; Guerreiro, I.; Santos, R. A.; Coutinho, F.; Couto, A.; Serra, C. R.; Olsen, Rolf Erik; Peres, H.; Oliva-Teles, A (Peer reviewed; Journal article, 2020)
      The present work assessed the effects of dietary ratios of essential fatty acids, arachidonic (ARA), eicosapentaenoic (EPA) and docosahexaenoic acid (DHA), on liver and intestine oxidative status, intestinal histomorphology ...

    • Oxide Sensor Measurements and Simultaneous Optical Observations During Dissolution of Alumina in Cryolite Melt 

      Bracamonte, Luis Carlos Izaguirre; Einarsrud, Kristian Etienne; Rosenkilde, Christian; Sandnes, Espen (Journal article; Peer reviewed, 2022)

    • Oxide – organic heterostructures: a case study of charge displacement absence at a SnO2 – copper phthalocyanine buried interface 

      Krzywiecki, Maciej; Grządziel, Lucyna; Powroźnik, Paulina; Kwoka, Monika; Rechmann, Julian; Erbe, Andreas (Journal article; Peer reviewed, 2018)
      Reduced tin dioxide/copper phthalocyanine (SnOx/CuPc) heterojunctions recently gained much attention in hybrid electronics due to their defect structure, allowing tuning of the electronic properties at the interface towards ...

    • OXR1A, a Coactivator of PRMT5 Regulating Histone Arginine Methylation 

      Yang, Mingyi; Lin, Xiaolin; Segers, Filip; Suganthan, Rajikala; Hildrestrand, Gunn Annette; Rinholm, Johanne Egge; Aas, Per Arne; Sousa, Mirta; Holm, Sverre; Bolstad, Nils; Warren, David; Berge, Rolf Kristian; Johansen, Rune Forstrøm; Yndestad, Arne; Kristiansen, Elise; Klungland, Arne; Gomez, Luisa Fernanda Luna; Eide, Lars; Halvorsen, Bente; Aukrust, Pål; Bjørås, Magnar (Peer reviewed; Journal article, 2020)
      Oxidation resistance gene 1 (OXR1) protects cells against oxidative stress. We find that male mice with brain-specific isoform A knockout (Oxr1A−/−) develop fatty liver. RNA sequencing of male Oxr1A−/− liver indicates ...

    • Oxy-combustion coal based power plants: study of operating pressure, oxygen purity and downstream purification parameters 

      Soundararajan, Rengarajan; Gundersen, Truls; Ditaranto, Mario (Journal article; Peer reviewed, 2014)
      Oxy-combustion coal based power plants are considered one of the cost effective ways to produce CO2 emission free electricity. Recovery of compression heat and the latent heat from the flue gases can further improve the ...

    • Oxycodone, Morphine, and Fentanyl in Patients with Chronic Pain: Proposal of Dose-Specific Concentration Ranges 

      Thaulow, Cecilie Hasselø; Helland, Arne; Kongsgaard, Ulf Erik; Høiseth, Gudrun (Peer reviewed; Journal article, 2023)
      Background: Interpreting opioid concentrations is challenging because of the lack of reference ranges. Therefore, the authors aimed to propose dose-specific concentration ranges in serum for oxycodone, morphine, and ...

    • Oxygen Absorption in Nanocrystalline h-RMnO<inf>3</inf> (R = Y, Ho, Dy) and the Effect of Ti Donor Doping 

      Danmo, Frida Hemstad; Williamson, Benjamin Albert Dobson; Småbråten, Didrik Rene; Gaukås, Nikolai Helth; Østli, Elise Ramleth; Grande, Tor; Glaum, Julia; Selbach, Sverre Magnus (Journal article; Peer reviewed, 2023)

    • Oxygen and temperature effect on formation of degradation compounds from MEA 

      Vevelstad, Solrun Johanne; Johansen, Maren T; Knuutila, Hanna; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2014)
      Liquid phase degradation of MEA and the formation of 8 degradation compounds were studied at 4 different oxygen concentrations and three different temperatures. Liquid phase total nitrogen was determined and compared with ...

    • Oxygen Incorporation and Release in Metastable Bixbyite V2O3 Nanocrystals 

      Bergerud, Amy; Selbach, Sverre Magnus; Milliron, Delia J. (Journal article, 2016)
      A new, metastable polymorph of V2O3 with a bixbyite structure was recently stabilized in colloidal nanocrystal form. Here, we report the reversible incorporation of oxygen in this material, which can be controlled by varying ...

    • Oxygen Non-Stoichiometry and Electrical Conductivity of La0.2Sr0.8Fe0.8B0.2O3 − δ, B = Fe, Ti, Ta 

      Lohne, Ørjan Fossmark; Phung, Tan Nhut; Grande, Tor; Bouwmeester, Henny J. M.; Hendriksen, Peter Vang; Søgaard, Martin; Wiik, Kjell (Journal article; Peer reviewed, 2014)
      The oxygen non-stoichiometry was determined by coulometric titration for the perovskite oxides La0.2Sr0.8FeO3 − δ and La0.2Sr0.8Fe0.8B0.2O3 − δ (B = Ti4 + and Ta5 +) in the temperature range 600 °C ⩽ T ⩽ 900 °C and the ...

    • Oxygen permeation in symmetric and asymmetric La0.2Sr0.8Fe0.8Ta0.2O3-d membranes 

      Gurauskis, Jonas; Lohne, Ørjan Fossmark; Lagergren, Dan Stræte; Tjønneland Wefring, Espen; Wiik, Kjell (Journal article; Peer reviewed, 2016)
      La0.2Sr0.8Fe0.8Ta0.2O3 − δ (LSFT) is a mixed ionic electronic conductor (MIEC) at elevated temperatures and as such a candidate material for applications both in syn-gas synthesis and as electrodes in solid oxide fuel cells ...

    • Oxygen stoichiometry and transport properties of cerium niobate 

      Vullum, Fride; Grande, Tor (Journal article; Peer reviewed, 2008)
      CeNbO4 + δ has been synthesized by both solid state and wet chemical routes and characterized with respect to electrical conductivity and oxygen stoichiometry between 900 °C and 1100 °C and pO2 from 1 bar to 0.002 bar. ...

    • Oxygen uptake during functional activities after stroke - Reliability and validity of a portable ergospirometry system 

      Gjellesvik, Tor Ivar; Brurok, Berit; Tjønna, Arnt Erik; Tørhaug, Tom; Askim, Torunn (Journal article; Peer reviewed, 2017)
      Background People with stroke have a low peak aerobic capacity and experience increased effort during performance of daily activities. The purpose of this study was to examine test-retest reliability of a portable ...

    • Oxygen vacancies in the bulk and at neutral domain walls in hexagonal YMnO3 

      Skjærvø, Sandra Helen; Småbråten, Didrik Rene; Spaldin, Nicola A; Tybell, Per Thomas Martin; Selbach, Sverre Magnus (Journal article; Peer reviewed, 2018)
      We use density functional calculations to investigate the accommodation and migration of oxygen vacancies in bulk hexagonal YMnO3, and to study interactions between neutral ferroelectric domain walls and oxygen vacancies. ...