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Viser treff 1961-1980 av 2667

    • Responsive Hydrogels for Label-Free Signal Transduction within Biosensors 

      Gawel, Kamila; Barriet, David; Sletmoen, Marit; Stokke, Bjørn Torger (Journal article; Peer reviewed, 2010)
      Hydrogels have found wide application in biosensors due to their versatile nature. This family of materials is applied in biosensing either to increase the loading capacity compared to two-dimensional surfaces, or to support ...

    • Restriction spectrum imaging with elastic image registration for automated evaluation of response to neoadjuvant therapy in breast cancer 

      Andreassen, Maren Marie Sjaastad; Loubrie, Stephane; Tong, Michelle W.; Fang, Lauren; Seibert, Tyler; Wallace, Anne M.; Zare, Somaye; Ojeda-Fournier, Haydee; Kuperman, Joshua; Hahn, Michael; Jerome, Neil Peter; Bathen, Tone Frost; Rodríguez-Soto, Ana E.; Dale, Anders; Rakow-Penner, Rebecca (Peer reviewed; Journal article, 2023)
      Purpose: Dynamic contrast-enhanced MRI (DCE) and apparent diffusion coefficient (ADC) are currently used to evaluate treatment response of breast cancer. The purpose of the current study was to evaluate the three-component ...

    • 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; Peer reviewed, 2011)
      Following the 38th Annual European Meeting on Atmospheric Studies by Optical Methods in Siuntio in Finland, an intercalibration workshop for optical low light calibration sources was held in Sodankyla, Finland. The main ¨ ...

    • Retrieval of three-dimensional spatial information from fast in situ two-dimensional synchrotron radiography of solidification microstructure evolution 

      Mirihanage, Wajira; Falch, Ken Vidar; Snigireva, Irina; Snigirev, A; Li, Yanjun; Arnberg, Lars; Mathiesen, Ragnvald (Journal article; Peer reviewed, 2014)
      In situ synchrotron X-ray radiography of columnar dendritic growth in Al–15 wt.% Cu–9 wt.% Si–0.015 wt.% Sr alloy has been carried out with the temporal and spatial resolutions of 100 ms and 0.65 μm, respectively. ...

    • Revealing internal flow behaviour in arc welding and additive manufacturing of metals 

      Aucott, Lee; Dong, Hongbiao; Mirihanage, Wajira; Atwood, Robert; Kidess, Anton; Gao, Shian; Wen, Shuwen; Marsden, John; Feng, Shuo; Tong, Mingming; Connolley, Thomas; Drakopoulos, Michael; Kleijn, Chris R.; Richardson, Ian M.; Browne, David J.; Mathiesen, Ragnvald; Atkinson, Helen V. (Journal article; Peer reviewed, 2018)
      Internal flow behaviour during melt-pool-based metal manufacturing remains unclear and hinders progression to process optimisation. In this contribution, we present direct time-resolved imaging of melt pool flow dynamics ...

    • Revealing the Heterogeneous Nucleation and Growth Behaviour of Grains in Inoculated Aluminium Alloys During Solidification 

      Xu, Yijiang; Casari, Daniele; Mathiesen, Ragnvald; Li, Yanjun (Peer reviewed; Journal article, 2019)
      An in situ X-ray radiographic study on the grain nucleation and grain growth of inoculated Al–10Cu and Al–20Cu alloys during isothermal melt solidification and directional solidification conditions with constant cooling ...

    • Revealing the heterogeneous nucleation behavior of equiaxed grains of inoculated Al alloys during directional solidification 

      Xu, Yijiang; Casari, Daniele; Mathiesen, Ragnvald; Li, Yanjun (Journal article, 2018)
      An in-situ study on the directional solidification of an inoculated Al-20 wt%Cu alloy under well-controlled constant cooling rates and temperature gradients has been carried out using a microfocus X-radiography set-up. The ...

    • Reversal and termination of current-induced domain wall motion via magnonic spin-transfer torque 

      Linder, Jacob (Journal article; Peer reviewed, 2012)
      We investigate the domain wall dynamics of a ferromagnetic wire under the combined influence of a spin-polarized current and magnonic spin-transfer torque generated by an external field, taking also into account Rashba ...

    • Reversal of the negative natural aging effect in Al-Mg-Si alloys 

      Martinsen, Fredrik A; Ehlers, Flemming J H; Torsæter, Malin; Holmestad, Randi (Journal article, 2012)
      The effect of solute clustering on subsequent precipitation has been investigated for three different Al–Mg–Si alloys with similar Mg/Si ratios but different Mg + Si contents. Hardness measurements were carried out (i) ...

    • Reversed Hysteresis during CO Oxidation over Pd75Ag25(100) 

      Fernandes, Vasco Rafael P; Van der Bossche, Maxime; Knudsen, Jan; Farstad, Mari Helene; Gustafson, Johan; Venvik, Hilde Johnsen; Grönbeck, Henrik; Borg, Anne (Journal article; Peer reviewed, 2016)
      CO oxidation over Pd(100) and Pd75Ag25(100) has been investigated by a combination of near-ambient-pressure X-ray photoelectron spectroscopy, quadrupole mass spectrometry, density functional theory calculations, and ...

    • Revisiting cosmic ray antinuclei fluxes with a new coalescence model 

      Kachelriess, Michael; Ostapchenko, Sergey; Tjemsland, Jonas (Peer reviewed; Journal article, 2020)
      Antideuteron and antihelium nuclei have been proposed as promising detection channels for dark matter because of the low astrophysical backgrounds expected. To estimate both potential exotic contributions and their ...

    • 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; 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 ...

    • Rigid Body Attitude Control 

      Kleivedalen, Anne Mari (Master thesis, 2014)
      Geometric numerical integration schemes have been studied for rigid body attitudecontrol problems. We consider symplectic integrators and present a Lie group varia-tional integrator and a discrete gradient method. The two ...

    • Ring Versus Ovoids and Intracavitary Versus Intracavitary-Interstitial Applicators in Cervical Cancer Brachytherapy: Results From the EMBRACE I Study 

      Serban, Monica; Kirisits, Christian; de Leeuw, Astrid; Pötter, Richard; Jürgenliemk-Schulz, Ina; Nesvacil, Nicole; Swamidas, Jamema; Hudej, Robert; Lowe, Gerry; Hellebust, Taran Paulsen; Menon, Geetha; Oinam, Arun; Bownes, Peter; Oosterveld, Bernard; De Brabandere, Marisol; Koedooder, Kees; Marthinsen, Anne Beate Langeland; Whitney, Diane; Lindegaard, Jacob C.; Tanderup, Kari (Peer reviewed; Journal article, 2020)
      Purpose The aim of this study was to investigate the influence of brachytherapy technique and applicator type on target dose, isodose surface volumes, and organ-at-risk (OAR) dose. Methods and Materials Nine hundred ...

    • RKKY interaction and coexistence with magnetism in superconducting systems 

      Birgani, Atousa Ghanbari (Doctoral theses at NTNU;2022:53, Doctoral thesis, 2022)
      When cooled down, the electrical resistivity of certain materials suddenly drops to zero at some specific temperature. This phenomenon is called superconductivity. As we are living in a world steadily demanding more energy, ...

    • RKKY interaction in a spin-split superconductor 

      Ghanbari Birgani, Atousa; Linder, Jacob (Peer reviewed; Journal article, 2021)
      We determine theoretically the interaction between two magnetic impurities embedded in a spin-split s-wave superconductor. The spin-splitting in the superconductor gives rise to two different interaction types between ...

    • RKKY Interaction in Unconventional Superconductors 

      Tietjen, Finja (Master thesis, 2023)
      Med den økende interessen for ikke-konvensjonelle superledere og jakten på kontrollerbare kvantebits, har Ruderman-Kittel-Kasuya-Yosida (RKKY) vekselvirkningen, en viktig utveklslings-vekselsvirkning mellom lokale spinnmomenter ...

    • Robot Control in Image-Guided Intervention 

      Østvik, Andreas (Master thesis, 2016)
      Introducing autonomous robot systems in clinical medicine is deemed extremely challenging due to the complex scene involved and variations between patients. The majority of commercialized systems are controlled directly ...

    • Robotic optical observations of compact binary millisecond pulsars 

      Anders Tidemann (Master thesis, 2023)
      Denne masteroppgaven fokuserer på robotiske optiske observasjoner av den kompakte dobbeltstjerne-millisekundpulsaren PSR J1048+2339, utført ved hjelp av Joan Oró-teleskopet (TJO). Som en del av masterarbeidet ble en ...

    • Robust Magnetic Surface Doping of Transition Metal Dichalcogenides 

      Børkja, Mathieu Le Boulvais (Master thesis, 2016)
      The growth and potential intercalation of Fe on naturally grown MoS$_{2}$ has been studied using a number of surface techniques. An initial sample characterization revealed that samples extracted from the natural MoS$_{2}$ ...