Now showing items 404-423 of 2547

  • Johansen, Ole Gunnar (Master thesis / Masteroppgave, 2018)
    Dynamic contrast enhanced (DCE) MRI is increasingly used for tumor imaging, both for clinical use and research. However, existing DCE-based methods have limitations with regard to standardization and reproducibility, ...
  • Lie, Henrik Bjoner (Master thesis / Masteroppgave, 2019)
    From the Sun to the Earth’s upper atmosphere, particles and energy are trans- ported through several key processes. Many of these we know well, and some we are still learning about. In this thesis we will study one of the ...
  • Hagen, Trine Wiborg (Master thesis / Masteroppgave, 2010)
    Et av de mest spennende og minst kjente områdene innenfor eksperimentell kjernefysikk, er spektroskopi av kjerner som nærmer seg stabilitetsgrensen, som for eksempel for kjerner med høy masse og ladning. GABRIELA er et ...
  • Sørdal, Vegard Børve; Bergli, Joakim (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Machine learning techniques based on artificial neural networks have been successfully applied to solve many problems in science. One of the most interesting domains of machine learning, reinforcement learning, has a natural ...
  • Matre, Christoffer (Master thesis / Masteroppgave, 2019)
  • Nguyen, Kevin (Master thesis / Masteroppgave, 2017)
  • Azarov, Alexander; Aarseth, Bjørn Lupton; Vines, Lasse; Hallen, Anders; Monakhov, Eduard; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    It is known that the behavior of residual Li in ion implanted ZnO depends on the preferential localization of the implants, in particular, forming characteristic Li depleted or Li pile-up regions for Zn or O sublattice ...
  • Neuvonen, Pekka T.; Vines, Lasse; Venkatachalapathy, Vishnukanthan; Zubiaga, Asier; Tuomisto, Filip; Hallén, Anders; Svensson, Bengt G.; Kuznetsov, Andrej Yu. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    Secondary ion mass spectrometry (SIMS) and positron annihilation spectroscopy (PAS) have been applied to study impurity migration and open volume defect evolution in Na+ implanted hydrothermally grown ZnO samples. In ...
  • Azarov, Alexander; Wendler, Elke; Monakhov, Edouard; Svensson, Bengt Gunnar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Despite the fact that nitrogen is a potential acceptor dopant and one of the most studied elements in ZnO, lacking understanding of associated defects and their thermal evolution limits realization of reliable p-type doping ...
  • Johansen, Hege Westvold (Master thesis / Masteroppgave, 2020)
  • Cheng, Shiyang (Master thesis / Masteroppgave, 2012)
    In this master thesis, defects and transport properties in fluorite related materials Ln2Ce2O7 (Ln=Nd, Gd) were investigated by electrical measurements and thermogravimetry. Nd2-xCaxCe2O7-δ (x=0, 0.05, 0.1, 0.2) and ...
  • Pan, Jie (Master thesis / Masteroppgave, 2012)
  • Fahle, Ilene (Master thesis / Masteroppgave, 2012)
    The exploration of double perovskites has led to the introduction of a broad range of high temperature proton conductors with varying conduction properties. To further investigate these materials, acceptor doped Ca2AlNbO6 ...
  • Norderhaug, Marit (Master thesis / Masteroppgave, 2013)
    WO3 er en n-leder som er mye studert for den elektrokromiske effekten, der materialet skifter farge ved tilførsel av ioner og elektroner. Mekanismen bak er ikke fullstendig kjent, og det hersker uenighet om høy konsentrasjon ...
  • McBeck, Jessica Ann; Aiken, John Mark; Mathiesen, Joachim; Ben-Zion, Yehuda; Renard, Francois (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Forecasting the timing of catastrophic failure, such as crustal earthquakes, has been a central concern for centuries. Such forecasting requires identifying signals that evolve or accelerate in the precursory phase leading ...
  • Hope, Tuva Roaldsdatter; White, Nathan S.; Kuperman, Joshua; Chao, Ying; Yamin, Ghiam; Bartch, Hauke; Schenker-Ahmed, Natalie M.; Rakow-Penner, Rebecca; Bussell, Robert; Nomura, Natsuko; Kesari, Santosh; Bjørnerud, Atle; Dale, Anders (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    The diffusion-weighted magnetic resonance imaging (DWI) technique enables quantification of water mobility for probing microstructural properties of biological tissue and has become an effective tool for collecting information ...
  • Qureishy, Thomas; Laliena, Carlos; Martínez, Elena; Qviller, Atle Jorstad; Vestgården, Jørn Inge; Johansen, Tom Henning; Navarro, Rafael; Mikheenko, Pavlo (Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)
    Tapes of MgB2 with high critical current have a significant technological potential, but can experience operational breakdown due to thermomagnetic instabilities. Such events are routinely registered by magnetisation ...
  • Mikheenko, Pavlo; Qureishy, Thomas; Mercier, Frederic; Jacquemin, M; Pons, M (Chapter / Bokkapittel / SubmittedVersion, 2017)
    Niobium nitride (NbN) thin films are extensively used in superconducting devices such as single–photon detectors, hot electron bolometers, microwave resonators and kinetic inductance detectors. The operation of these devices ...
  • Baruch-El, E.; Baziljevich, Michail; Johansen, Tom Henning; Albrecht, J; Shaulov, A.; Yeshurun, Y. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    Magnetic flux instability limits potential applications of superconductors such as MgB2 in practical devices. Previous studies in MgB2 films exposed to magnetic fields revealed the occurrence of dendritic flux avalanches ...
  • Seip, Torleif Andre Tollefsen (Master thesis / Masteroppgave, 2008)
    If a future hydrogen society is to be established, a highly efficient solid-state hydrogen storage material must be found. The metal-N-H system, which is one of the new promising candidates, has been given considerable ...