Faculty of Mathematics and Natural Sciences: Recent submissions

Now showing items 41-60 of 9902

    • Operational modelling to assess advective harmful algal bloom development and its potential to impact aquaculture 

      Dees, Paul; Dale, Andrew; Callum, Whyte; Beth, Mouat; Keith, Davidson (Journal article; Peer reviewed, 2023)
      A particle tracking model is described and used to explore the role of advection as the source of harmful algal blooms that impact the Shetland Islands, where much of Scotland's aquaculture is located. The movement of ...

    • Realistic mask generation for matter-wave lithography via machine learning 

      Fiedler, Johannes; Palau, Adria Salvador; Osestad, Eivind Kristen; Parviainen, Pekka; Holst, Bodil (Journal article; Peer reviewed, 2023)
      Fast production of large-area patterns is crucial for the established semiconductor industry and enables industrial-scale production of next-generation quantum devices. Metastable atom lithography with binary holography ...

    • Investigation of offshore wind turbine wakes by numerical modeling and full-scale measurements 

      Krutova, Maria (Doctoral thesis, 2024-04-30)
      Bak en vindturbin rotor som trekker kinetisk energi ut fra luftstrømmen, blir strømningsforholdene endret. Dette området kalles vindturbinens vake. Vaken er karakterisert av redusert vindhastighet og økt turbulensintensitet. ...

    • Multiphase flow and physicochemical interactions during geological carbon sequestration. A laboratory investigation from micrometer to meter 

      Haugen, Malin (Doctoral thesis, 2024-04-25)
      Karbonfangst og lagring (CCS) er ein teknologi som kan medverke til reduserte klimagassutslepp; eit uttalt mål frå verdas politiske leiarar. Oljeproduksjonen i verda er vedvarande høg og, medan prisen på fornybar energi ...

    • Ten priority questions for increasing the consistency and success in hatchery production of the European flat oyster for habitat restoration 

      Zu Ermgassen, Philine S.E.; Albentosa, Marina; Bakker, Nienke; Blanco, Ainhoa; Bonačić, Kruno; Carboni, Stefano; Brundu, Gianni; Colsoul, Bérenger; Araujo Piñeiro, Nicolás; Da Costa, Fiz; Dubbeldam, Marco; Fabra, Monica; Galley, Thomas; Gowland, Dennis; Jones, Nicholas; Hernández, Ángel; Hernandis, Sebastián; Laugen, Ane Timenes; Magnesen, Thorolf; Malham, Shelagh; Pogoda, Bernadette; Preston, Joanne; Sas, Hein; Saurel, Camille; Barja, Juan L.; Kamermans, Pauline (Journal article; Peer reviewed, 2023)
      The European flat oyster, Ostrea edulis, once formed extensive reef habitats throughout European seas and estuaries. These reefs are now largely functionally extinct, yet interest and support for their restoration is rapidly ...

    • Pore-scale kinetics of calcium dissolution and secondary precipitation during geological carbon storage 

      Liu, Na; Haugen, Malin; Benali, Benyamine; Landa-Marbán, David; Fernø, Martin (Journal article; Peer reviewed, 2023)
      Geological carbon storage (GCS) in deep underground formations presents a significant opportunity to mitigate anthropogenic emissions of carbon dioxide in the context of climate change. The injected carbon dioxide may ...

    • A contrastive learning approach for individual re-identification in a wild fish population 

      Olsen, Ørjan Langøy; Sørdalen, Tonje Knutsen; Goodwin, Morten; Malde, Ketil; Knausgård, Kristian Muri; Halvorsen, Kim Aleksander Tallaksen (Journal article; Peer reviewed, 2023)
      In both terrestrial and marine ecology, physical tagging is a frequently used method to study population dynamics and behavior. However, such tagging techniques are increasingly being replaced by individual re-identification ...

    • Injectable In Situ Crosslinking Hydrogel for Autologous Fat Grafting 

      Oskarsdotter, Kristin; Nordgård, Catherine Taylor; Apelgren, Peter; Säljö, Karin; Solbu, Anita Akbarzadeh; Eliasson, Edwin; Sämfors, Sanna; Sætrang, Henriette Elisabeth Myhr; Asdahl, Lise Cathrine; Thompson, Eric Malcolm; Troedsson, Christofer; Simonsson, Stina; Strand, Berit Løkensgard; Gatenholm, Paul; Kölby, Lars (Journal article; Peer reviewed, 2023)
      Autologous fat grafting is hampered by unpredictable outcomes due to high tissue resorption. Hydrogels based on enzymatically pretreated tunicate nanocellulose (ETC) and alginate (ALG) are biocompatible, safe, and present ...

    • Annotating otoliths with a deep generative model 

      Bojesen, Troels Arnfred; Denechaud, Côme; Malde, Ketil (Journal article; Peer reviewed, 2023)
      Otoliths are a central information source for fish ecology and stock management, conveying important data about age and other life history for individual fish. Traditionally, interpretation of otoliths has required skilled ...

    • Rigorous derivation of some asymptotic models for free water surfaces and interfaces 

      Paulsen, Martin Oen (Doctoral thesis, 2024-04-26)
      Opprinnelsen til moderne matematisk hydrodynamikk kan spores tilbake til 1700-tallet. I 1757 publiserte Euler artikkelen der han introduserte ligninger, i dag kjent som Euler likningene, som kan beskrive væskedynamikk [31]. ...

    • Deglaciation of the highest mountains in Scandinavia at the Younger Dryas–Holocene transition: evidence from surface exposure-age dating of ice-marginal moraines 

      Matthews, John A.; Linge, Henriette; Nesje, Atle; Wilson, Peter; Mourne, Richard W.; Winkler, Stefan; Owen, Geraint; Hill, Jennifer L.; Haselberger, Stefan; Olsen, Jesper (Journal article; Peer reviewed, 2023)
      Surface exposure–age dating was applied to rock surfaces associated with ice-marginal moraines at elevations of ~1520–1780 m a.s.l. on the slopes of Galdhøpiggen and Glittertinden, the two highest mountains in Scandinavia ...

    • Salmon louse labial gland enzymes: implications for host settlement and immune modulation 

      Midtbø, Helena Marie Doherty; Eichner, Christiane; Hamre, Lars Are; Dondrup, Michael; Flesland, Linn; Tysseland, Kristoffer Helland; Kongshaug, Heidi; Borchel, Andreas; Nilsen, Frank; Øvergård, Aina-Cathrine (Journal article; Peer reviewed, 2024)
      Salmon louse (Lepeophtheirus salmonis) is a skin- and blood-feeding ectoparasite, infesting salmonids. While feeding, labial gland proteins from the salmon louse may be deposited on the Atlantic salmon (Salmo salar) skin. ...

    • Still Arctic? — The changing Barents Sea 

      Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Reigstad, Marit; Sundfjord, Arild; Bogstad, Bjarte; Chierici, Melissa; Hop, Haakon; Renaud, Paul Eric; Smedsrud, Lars Henrik; Stige, Leif Christian; Årthun, Marius; Berge, Jørgen; Bluhm, Bodil Annikki Ulla Barbro; Borgå, Katrine; Bratbak, Gunnar; Divine, Dmitry V; Eldevik, Tor; Eriksen, Elena; Fer, Ilker; Fransson, Agneta; Gradinger, Rolf Rudolf; Granskog, Mats A.; Haug, Tore; Husum, Katrine; Johnsen, Geir; Jonassen, Marius Opsanger; Jørgensen, Lis Lindal; Kristiansen, Svein; Larsen, Aud; Lien, Vidar Surén; Lind, Sigrid; Lindstrøm, Ulf Ove; Mauritzen, Cecilie; Melsom, Arne; Mernild, Sebastian H.; Müller, Malte; Nilsen, Frank; Primicerio, Raul; Søreide, Janne; van der Meeren, Gro Ingleid; Wassmann, Paul (Journal article; Peer reviewed, 2023)
      The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. ...

    • Impacts of predation by Eurasian otters on Atlantic salmon in two Norwegian rivers 

      Sortland, Lene; Lennox, Robert; Velle, Gaute; Vollset, Knut; Kambestad, Marius (Journal article; Peer reviewed, 2023)
      1. The return of the Eurasian otter (Lutra lutra) to western Norway has sparked human–predator conflicts because otters prey on vulnerable Atlantic salmon (Salmo salar) populations. Although predation may not be the ultimate ...

    • Bremsstrahlung as a probe of baryon stopping in heavy-ion collisions 

      Nese, Sigurd; Nystrand, Joakim Ingemar (Journal article; Peer reviewed, 2023)
      In collisions between heavy ions at ultra-relativistic energies the participating protons lose energy, which is converted into new particles. As the protons slow down, they emit bremsstrahlung radiation. The yield and ...

    • Covering Radius of Generalized Zetterberg Type Codes Over Finite Fields of Odd Characteristic 

      Shi, Minjia; Helleseth, Tor; Özbudak, Ferruh (Journal article; Peer reviewed, 2023)
      Let Fq0 be a finite field of odd characteristic. For an integer s≥1 , let Cs(q0) be the generalized Zetterberg code of length qs0+1 over Fq0 . If s is even, then we prove that the covering radius of Cs(q0) is 3. Put q=qs0 ...

    • The dissolution of a miscible drop rising or falling in another liquid at low Reynolds number 

      Nordbotten, Jan Martin; Mossige, Joachim (Journal article; Peer reviewed, 2023)
      “A basic and basically unsolved problem in fluid dynamics is to determine the evolution of rising bubbles and falling drops of one miscible liquid in another” [D. D. Joseph and Y. Y. Renardy, Fundamentals of Two-Fluid ...

    • New Results on the -1 Conjecture on Cross-Correlation of m-Sequences Based on Complete Permutation Polynomials 

      Wu, GaoFei; Feng, Keqin; Li, Nian; Helleseth, Tor (Journal article; Peer reviewed, 2023)
      The cross-correlation between two maximum length sequences (m-sequences) of the same period has been studied since the end of 1960s. One open conjecture by Helleseth states that the cross- correlation between any two p-ary ...

    • Detours in directed graphs 

      Fomin, Fedor; Golovach, Petr; Lochet, William Alexandre; Sagunov, Danil; Saurabh, Saket; Simonov, Kirill (Journal article; Peer reviewed, 2023)
      We study two “above guarantee” versions of the classical Longest Path problem on undirected and directed graphs and obtain the following results. In the first variant of Longest Path that we study, called Longest Detour, ...

    • Classes of intersection digraphs with good algorithmic properties 

      Jaffke, Lars; Kwon, O-joung; Telle, Jan Arne (Journal article; Peer reviewed, 2023)
      While intersection graphs play a central role in the algorithmic analysis of hard problems on undirected graphs, the role of intersection digraphs in algorithms is much less understood. We present several contributions ...