Browsing Faculty of Mathematics and Natural Sciences by Title

Now showing items 27-46 of 9919

    • 3D silicon detectors for neutron imaging applications 

      Povoli, Marco; Kok, Angela Chun Ying; Koybasi, Ozhan; Getz, Michael Norderhaug; O'Neill, George; Roehrich, Dieter; Pedersen, Henrik; Monakhov, Eduard; Birch, Jens; Choolakkal, Arun Haridas; Kanaki, Kalliopi; Lai, Chung-Chuan; Hall-Wilton, Richard; Slavicek, Tomas; Llamas-Jansa, Isabel (Journal article; Peer reviewed, 2023)
      Neutron detection is of great importance in many fields spanning from scientific research, to nuclear science, and to medical application. The development of silicon-based neutron detectors with enhanced neutron detection ...

    • 3D stochastic modelling of fault zones in siliciclastic reservoirs. Implications for reservoir description and fluid flow modelling 

      Fachri, Muhammad (Doctoral thesis, 2014-12-16)
      Fault zones in siliciclastic rocks form distinct volumetric entities and typically exhibit great structural complexity. While it has been considered that the main impact of fault zones to fluid flow is to baffle or block ...

    • 3D structure and formation of hydrothermal vent complexes at the paleocene-eocene transition, the Møre basin, MID-Norwegian margin 

      Kjoberg, Sigurd; Schmiedel, Tobias; Planke, Sverre; Svensen, Henrik; Millett, John; Jerram, Dougal Alexander; Galland, Olivier; Lecomte, Isabelle; Schofield, Nick; Haug, Øystein Thorden; Helsem, Andreas (Peer reviewed; Journal article, 2017-08)
      The mid-Norwegian margin is regarded as an example of a volcanic-rifted margin, formed prior to and during, Paleogene breakup of the northeast Atlantic. The area is characterized by the presence of voluminous basaltic ...

    • A 3D-1D coupled blood flow and oxygen transport model to generate microvascular networks 

      Köppl, Tobias; Vidotto, Ettore; Wohlmuth, Barbara (Journal article; Peer reviewed, 2020)
      In this work, we introduce an algorithmic approach to generate microvascular networks starting from larger vessels that can be reconstructed without noticeable segmentation errors. Contrary to larger vessels, the reconstruction ...

    • 3He spin-echo scattering indicates hindered diffusion of isolated water molecules on graphene-covered Ir(111) 

      Kyrkjebø, Signe; Cassidy, Andrew; Lambrick, Sam; Jardine, Andrew; Holst, Bodil; Hornekær, Liv (Journal article; Peer reviewed, 2023)
      The dynamics of water diffusion on carbon surfaces are of interest in fields as diverse as furthering the use of graphene as an industrial-coating technology and understanding the catalytic role of carbon-based dust grains ...

    • The 3rd AGILE Terrestrial Gamma Ray Flash Catalog. Part I: Association to Lightning Sferics 

      Lindanger, Anders; Marisaldi, Martino; Maiorana, Carolina; Sarria, David; Albrechtsen, Kjetil; Østgaard, Nikolai; Galli, M.; Ursi, Alessandro; Labanti, C.; Tavani, Marco; Pittori, C.; Verrecchia, F. (Journal article; Peer reviewed, 2020)
      We present a complete and systematic search for terrestrial gamma-ray flashes (TGFs), detected by AGILE, that are associated with radio sferics detected by the World Wide Lightning Location Network (WWLLN) in the period ...

    • The 3rd AGILE Terrestrial Gamma-ray Flashes Catalog. Part II: Optimized Selection Criteria and Characteristics of the New Sample 

      Maiorana, Carolina; Marisaldi, Martino; Lindanger, Anders; Østgaard, Nikolai; Ursi, Alessandro; Sarria, David; Galli, M.; Labanti, C.; Tavani, Marco; Pittori, C.; Verrecchia, F. (Journal article; Peer reviewed, 2020)
      We present in this work the third catalog of terrestrial gamma-ray flashes (TGFs) by the AGILE mission and the new search algorithm that was developed to produce it. We firstly introduce the new selection criteria, designed ...

    • \(^{3}_{\Lambda}\mathrm H\) and \(^{3}_{\bar{\Lambda}} \overline{\mathrm H}\) production in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 2.76 TeV 

      Adam, Jaroslav; Adamová, Dagmar; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahn, Sang Un; Aimo, Ilaria; Aiola, Salvatore; Alme, Johan; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Haaland, Øystein Senneset; Huang, Meidana; Lønne, Per-Ivar; Nystrand, Joakim; Rehman, Attiq ur; Røhrich, Dieter; Ullaland, Kjetil; Velure, Arild; Wagner, Boris; Zhang, Hui; Zhou, Zhuo; Zhu, Hongsheng; Arsene, Ionut Christian; Bätzing, Paul Christoph; Dordic, Olja; Lindal, Svein; Mahmood, Sohail Musa; Milosevic, Jovan; Qvigstad, Henrik; Richter, Matthias; Røed, Ketil; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Zhao, Chengxin; Langøy, Rune; Lien, Jørgen André; Ajaz, Muhammad; Akindinov, Alexander; Alam, Sk Noor; Aleksandrov, Dimitry; Alessandro, Bruno; Alexandre, Didier; Alfaro Molina, José Rubén; ALICE, Collaboration (Peer reviewed; Journal article, 2016-03)
      The production of the hypertriton nuclei \(^{3}_{\Lambda}\mathrm H\) and \(^{3}_{\bar{\Lambda}} \overline{\mathrm H}\) has been measured for the first time in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 2.76 TeV with the ...

    • 3Λh and 3‾Λ‾h lifetime measurement in Pb–Pb collisions at √sNN = 5.02 TeV via two-body decay 

      Acharya, Shreyasi; Adamová, Dagmar; Adhya, Souvik Priyam; Adler, Alexander; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Neelima; Ahammed, Zubayer; Alme, Johan; Altenkaemper, Lucas; Djuvsland, Øystein; Ersdal, Magnus Rentsch; Fionda, Fiorella Maria Celeste; Grøttvik, Ola Slettevoll; Lofnes, Ingrid Mckibben; Nystrand, Joakim; Rehman, Attiq ur; Røhrich, Dieter; Tambave, Ganesh Jagannath; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Yuan, Shiming; Zhou, Zhuo; Arsene, Ionut Cristian; Bätzing, Paul Christoph; Dordic, Olja; Lardeux, Antoine Xavier; Lindal, Svein; Mahmood, Sohail Musa; Malik, Qasim Waheed; Neagu, Alexandra; Richter, Matthias; Røed, Ketil; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Zhao, Chengxin; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Nesbø, Simon Voigt; Storetvedt, Maksim Melnik; Langøy, Rune; Lien, Jørgen André; Ahmad, Shafiq F.; Ahn, Sang Un; Akindinov, Alexander; ALICE, Collaboration (Peer reviewed; Journal article, 2019-10)
      An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been ...

    • The 3 km Norwegian reanalysis (NORA3) – a validation of offshore wind resources in the North Sea and the Norwegian Sea 

      Solbrekke, Ida Marie; Sorteberg, Asgeir; Haakenstad, Hilde (Journal article; Peer reviewed, 2021)
      We validate a new high-resolution (3 km) numerical mesoscale weather simulation for offshore wind power purposes for the time period 2004–2016 for the North Sea and the Norwegian Sea. The 3 km Norwegian reanalysis (NORA3) ...

    • 4-Alkylated Silver–N-Heterocyclic Carbene (NHC) Complexes with Cytotoxic Effects in Leukemia Cells 

      Sandtorv, Alexander Harald; Leitch, Calum; Bedringaas, Siv Lise; Gjertsen, Bjørn Tore; Bjørsvik, Hans-Rene (Peer reviewed; Journal article, 2015-08-06)
      Computational chemistry has shown that backbone-alkylated imidazoles ought to be efficient ligands for transition metal catalysts with improved carbene-to-metal donation. In this work, such alkylated imidazoles were ...

    • A 4.5 Year‐Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin 

      Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2020)
      From May 2014 to September 2018, a laser spectrometer analyzer provided a 4.5 years continuous record of water vapor isotopic composition at Ny-Ålesund (8 m above sea level, a.s.l.), Svalbard. It corresponds to the longest ...

    • A 43k Kernel for Planar Dominating Set using Computer-Aided Reduction Rule Discovery 

      Halseth, Johan Torås (Master thesis, 2016-02-15)
      In this thesis we explore the technique of Region Decomposition for finding kernels for Planar Dominating Set. We redefine some concepts used in earlier work, fixing some ambiguities on the way. From those concepts we end ...

    • The 474-Kilobase-Pair Complete Genome Sequence of CeV-01B, a Virus Infecting Haptolina (Chrysochromulina) ericina(Prymnesiophyceae) 

      Gallot-lavallée, Lucie; Pagarete, António; Legendre, Matthieu; Santini, Sebastien; Sandaa, Ruth-Anne; Himmelbauer, Heinz; Ogata, Hiroyuki; Bratbak, Gunnar; Claverie, Jean-Michel (Peer reviewed; Journal article, 2015-12-03)
      We report the complete genome sequence of CeV-01B, a large double-stranded DNA virus infecting the unicellular marine phytoplankton Haptolina (formerly Chrysochromulina) ericina. CeV-01B and its closest relative Phaeocystis ...

    • 4D Seismic History Matching Using the Ensemble Kalman Filter (EnKF): Possibilities and Challenges 

      Fahimuddin, Abul (Doctoral thesis, 2010-05-27)
      This research endeavor presents a 4D seismic history matching work flow based on the ensemble Kalman filter (EnKF) methodology. The objective of this work is to investigate the sensitivity of different combinations of ...

    • 4D seismic history matching: Assessing the use of a dictionary learning based sparse representation method 

      Soares, Ricardo; Luo, Xiaodong; Evensen, Geir; Bhakta, Tuhin (Journal article; Peer reviewed, 2020-12)
      It is possible to improve oil-reservoir simulation models by conditioning them on 4D seismic data. Computational issues may arise related to both storage and CPU time due to the size of the 4D seismic dataset. An approach ...

    • 4th Nordic Workshop on Cosmogenic Nuclides. Landscape development and geohazards 

      Thuesen, Thomas; Sæbø, Mari; Hughes, Anna; Linge, Henriette (Book of abstracts, 2018)

    • 4th Party Logistics Problem Optimizer 

      Johannessen, Preben Bucher (Master thesis, 2020-02-17)
      This thesis considers a pickup and delivery problem with multiple time windows, a complex cost structure and factory constraints. We formulated the problem as a mathematical model and created an instance generator based ...

    • 60 years of scientific deep drilling in Colombia: The north Andean guide to the Quaternary 

      Hooghiemstra, Henry; Pérez, Gustavo Sarmiento; Torres Torres, Vladimir; Berrío, Juan-Carlos; Lourens, Lucas; Flantua, Suzette (Journal article; Peer reviewed, 2022)
      We sketch the initial history of collecting deep cores in terrestrial and marine sedimentary basins and ice cores to study environmental and climate change. Subsequently, we focus on the development of long records from ...

    • 9-Acridinemethanamine and Acridine-9-Carboxaldehyde as Potential Fluorescence Lifetime pH Indicators 

      Totland, Christian; Thomas, Peter; Holst, Bodil; Akhtar, Naureen; Hovdenes, Jostein; Skodvin, Tore (Journal article; Peer reviewed, 2020)
      A significant challenge concerning the development of fluorescence lifetime (FL) based pH sensors is the paucity of fluorophores with sufficiently large FL variation with pH. Acridine is amongst the indicators with highest ...