Browsing Fysisk institutt by Title

Now showing items 2695-2714 of 3682

  • Results from the intercalibration of optical low-light calibration sources 2011 
    Brändström, B. Urban E.; Enell, Carl-Fredrik; Widell, Ola; Hansson, Thord; Whiter, Daniel; Mäkinen, Sanna; Mikhaylova, Daria; Axelsson, Katarina; Sigernes, Fred; Gulbrandsen, Njål; Schlatter, Nicola M.; Gjendem, Amund Gjerde; Cai, L.; Reistad, Jone Peter; Daae, Marianne; Demissie, Teferi Dejene; Andalsvik, Yngvild Linnea; Roberts, Owen; Poluyanov, Stepan Viktorovich; Chernouss, Sergey (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    Abstract. Following the 38th Annual Meeting on Atmospheric studies by Optical methods at Siuntio in Finland, an intercalibration workshop for optical low-light calibration sources was held in Sodankylä, Finland. The main ...
  • Revealing the Origin of electrically-active Defects in β-Ga2O3 and r-TiO2 
    Zimmermann, Christian (Doctoral thesis / Doktoravhandling, 2020)
    Semiconducting materials are instrumental for the transition to a carbon-free society. Materials, such as titanium dioxide (TiO2) or gallium sesquioxide (Ga2O3) are promising for a number of applications in energy harvesting ...
  • Review of research on the thermoelectric material ZnSb 
    Song, Xin; Finstad, Terje (Chapter / Bokkapittel / PublishedVersion; Peer reviewed, 2016)
    The thermoelectric material ZnSb has been studied intensively in recent years and has shown promising features. The other zinc-antimonide compound, Zn4Sb3 has remarkable low thermal conductivity, but it is accompanied with ...
  • Revised spin values of the 991 keV and 1599 keV levels in 140Sm 
    Samorajczyk, J.; Klintefjord, Malin; Droste, C.; Görgen, Andreas; Marchlewski, T.; Srebrny, J.; Abraham, T.; Bello Garrote, Frank Leonel; Grodner, E.; Hadyńska-Klęk, Katarzyna; Kisieliński, M.; Komorowska, M.; Kowalczyk, M.; Kownacki, J.; Napiorkowski, P.; Szenborn, R.; Stolarz, A.; Tucholski, A.; Tveten, Gry Merete (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    The previously accepted spin values of the 991 and 1599 keV levels in Sm140 have been revised and established as 2+ and 0(+), respectively. The γ−γ angular correlation method was used to determine the new spin values. The ...
  • RF MEMS filtre basert på diskresonatorer 
    Landry, Fabien Ebanga Narcisse Ateba (Master thesis / Masteroppgave, 2008)
    MEMS-systemer har gjennom årene blitt et stort forskningfelt, med en rekke kommersielle suksesser. Siden 1990, har fordelene med MEMS, som alternativ løsning i trådløse systemer, blitt fremhevet som følge av den stadig ...
  • Rheological characterization of an injectable alginate gel system 
    Larsen, Benjamin E; Bjørnstad, Jorunn; Pettersen, Erik O; Tønnesen, Hanne H; Melvik, Jan E (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Background This work investigates a general method for producing alginate gel matrices using an internal mode of gelation that depends solely on soluble alginate and alginate/gelling ion particles. The ...
  • Rheology of high-capillary number two-phase flow in porous media 
    Sinha, Santanu; Gjennestad, Magnus Aashammer; Vassvik, Morten; Winkler, Mathias; Hansen, Alex; Flekkøy, Eirik Grude (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Flow of immiscible fluids in porous media at high capillary numbers may be characterized by an effective viscosity. We demonstrate that the effective viscosity is well-described by the Lichtenecker-Rother equation. Depending ...
  • Ringer i vann : Fleksibel læring -- Kvalitetsreformen i praksis 
    Ellingsrud, Geir; Bach-Gansmo, Edvin; Koch, Susanne Kjekshus; Herrestad, Henning; Andreassen, Ingvild Solberg; Mikalsen, Stig; Hjorth-Jensen, Morten; Hveberg, Klara; Langtangen, Hans Petter; Mørken, Knut; Vistnes, Arnt Inge; Haraldsen, Kirsten Borse; Karlsen, Hans Erik; Lindblad, Irene; Ebeling, Signe Oksefjell; Solhaug, Trond; Eifring, Halvor; Wilberg, Anette; Guttulsrud, Jan; Collins, Andrew; Ursin, Giske; Langleite, Torgrim; Nilsson, Kåre; Wlodek, Marcin; Engen, Bård Ketil (Book / Bok / PublishedVersion, 2007)
    I artikkelsamlingen kan du lese om pedagogiske endringer i krysningspunktet mellom teknologi, organisering og læring. Du finner artikler fra en rekke ulike fagmiljøer som beskriver prosjekter av mange ulike slag. Erfaringene ...
  • RippleNet: a Recurrent Neural Network for Sharp Wave Ripple (SPW-R) Detection 
    Hagen, Espen; Chambers, Anna; Pettersen, Klas H.; Einevoll, Gaute; Enger, Rune (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Abstract Hippocampal sharp wave ripples (SPW-R) have been identified as key bio-markers of important brain functions such as memory consolidation and decision making. Understanding their underlying mechanisms in healthy ...
  • RISC-V Processor Core Customization and Verification for m-NLP Applications 
    Pedersen, Robin Alexander Torstensson (Master thesis / Masteroppgave, 2020)
    This work experimented with using a custom instruction set extension for computing electron density from sensor data received from a multi-needle langmuir probe (m-NLP). Custom instructions were designed and implemented ...
  • Robust Pose Estimation for Offshore Ship-to-Ship Compensation using a LiDARRestricted Access 
    Løvsland, Per-Ove (Master thesis / Masteroppgave, 2018)
  • Robust statistical properties of T1 transitions in a multi-phase field model of cell monolayers 
    Angheluta-Bauer, Luiza; Voigt, Axel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Large-scale tissue deformation which is fundamental to tissue development hinges on local cellular rearrangements, such as T1 transitions. In the realm of the multi-phase field model, we analyse the statistical ...
  • Robustness of MR Elastography in the Healthy Brain: Repeatability, Reliability, and Effect of Different Reconstruction Methods 
    Svensson, Siri Fløgstad; De Arcos, José; Darwish, Omar Isam; Fraser-Green, Jorunn; Storås, Tryggve; Holm, Sverre; Vik-Mo, Einar O.; Sinkus, Ralph; Emblem, Kyrre E (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Background Changes in brain stiffness can be an important biomarker for neurological disease. Magnetic resonance elastography (MRE) quantifies tissue stiffness, but the results vary between acquisition and reconstruction ...
  • Role of defects in ultra-high gain in fast planar tin gallium oxide UV-C photodetector by MBE 
    Mukhopadhyay, Partha; Hatipoglu, Isa; Frodason, Ymir Kalmann; Varley, Joel Basile; Williams, Martin S.; Hunter, Daniel A.; Gunasekar, Naresh K.; Edwards, Paul R.; Martin, Robert W.; Wu, Feng; Mauze, Akhil; Speck, James S.; Schoenfeld, Winston V. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We report ultra-high responsivity of epitaxial [Formula: see text] (TGO) Schottky UV-C photodetectors and experimentally identified the source of gain as deep-level defects, supported by first principles calculations. ...
  • The role of grain boundary scattering in reducing the thermal conductivity of polycrystalline XNiSn (X=Hf, Zr, Ti) half-Heusler alloys 
    Schrade, Matthias; Berland, Kristian; Eliassen, Simen Nut Hansen; Guzik, Matylda Natalia; Echevarria-Bonet, Cristina; Sørby, Magnus Helgerud; Jenus, Petra; Hauback, Bjørn; Tofan, Raluca; Gunnæs, Anette Eleonora; Persson, Clas; Løvvik, Ole Martin; Finstad, Terje (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Thermoelectric application of half-Heusler compounds suffers from their fairly high thermal conductivities. Insight into how effective various scattering mechanisms are in reducing the thermal conductivity of fabricated ...
  • The role of interleukin-13 in the removal of hyper-radiosensitivity by priming irradiation 
    Edin, Nina Frederike J (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    It has previously been demonstrated that the presence of fetal bovine serum is necessary for TGF-β3 (transforming growth factor beta 3)-dependent elimination of low-dose hyper-radiosensitivity (HRS) in cells by 1 h of ...
  • Role of intrinsic and extrinsic defects in H implanted hydrothermally grown ZnO 
    Schifano, Ramon; Jakiela, R; Galeckas, Augustinas; Kopalko, K; Herklotz, Frank; Johansen, Klaus Magnus H; Vines, Lasse (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The impact of hydrogen in ZnO is revealed by combining reaction dynamics calculations with temperature dependent Hall (TDH), photoluminescence, and secondary ion mass spectrometry measurements performed on H, 2H, and He ...
  • Role of Nitrogen in Defect Evolution in Zinc Oxide: STEM−EELS Nanoscale Investigations 
    Bazioti, Kalliopi; Azarov, Alexander; Johansen, Klaus Magnus H; Svensson, Bengt Gunnar; Vines, Lasse; Kuznetsov, Andrej; Prytz, Øystein (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    Direct evidence of the formation of nitrogen molecules (N2) after ion implantion of ZnO has been revealed by an atomically resolved scanning transmission electron microscopy (STEM)–electron energy-loss spectroscopy (EELS) ...
  • Role of Pore-Size Distribution on Effective Rheology of Two-Phase Flow in Porous Media 
    Roy, Subhadeep; Sinha, Santanu; Hansen, Alex (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Immiscible two-phase flow of Newtonian fluids in porous media exhibits a power law relationship between flow rate and pressure drop when the pressure drop is such that the viscous forces compete with the capillary forces. ...
  • Role of seepage forces on hydraulic fracturing and failure patterns 
    Rozhko, Alexander (Doctoral thesis / Doktoravhandling, 2007)
    The mechanical role of seepage forces on hydraulic fracturing and failure patterns was studied both by the analytical methods of the continuum mechanics and by numerical simulations. Seepage forces are frictional forces ...