Browsing Øvrige samlinger by Title

Now showing items 1027-1046 of 1636

    • New wine in old bottles: Modification of the Na+/K+-ATPase enzyme activity assay and its application in salmonid aquaculture 

      Takvam, Marius; Sundell, Kristina; Sundh, Henrik; Gharbi, Naouel; Kryvi, Harald; Nilsen, Tom Ole (Peer reviewed; Journal article, 2023)
      The Na+, K+ ATPase (NKA) enzyme is important to generate the transmembrane ion gradient in the gills, intestine, and kidneys, hence, is vital for secondary transport of fluids and different solutes in teleosts. Gill NKA ...

    • Nidelva - Kunnskapsoppsummering av fiskebiologiske forhold 

      Gabrielsen, Sven-Erik; Haraldstad, Tormod; Anders, Lamberg (LFI - Laboratorium for ferskvannsøkologi og innlandsfiske, Research report, 2021)
      NVE skal i den kommende planperioden, vurdere nødvendige miljøtiltak for å nå de fastsatte miljømål for Nidelva. For å sikre et godt beslutningsgrunnlag for dette arbeidet, ønsket NVE at Agder Energi laget en samlet rapport ...

    • Nitrogen fixation rates in the Guinea Dome and the equatorial upwelling regions in the Atlantic Ocean 

      Fernández‑Carrera, Ana; Kiko, Rainer; Hauss, Helena; Hamilton, Douglas S.; Achterberg, Eric P.; Montoya, Joseph P.; Dengler, Marcus; Brandt, Peter; Subranamiam, Ajit (Peer reviewed; Journal article, 2023)
      Biological nitrogen fixation is a key process balancing the loss of combined nitrogen in the marine nitrogen cycle. Its relevance in upwelling or high nutrient regions is still unclear, with the few available studies in ...

    • "Nomader på lavterskel? - Boligløsninger for personer med rusproblemer og psykiske lidelser" 

      Sørly, Rita; Fresvik, Annette; Nødland, Svein Ingve; Tvedt, Helge Lea (Research report, 2021)
      I prosjektet har vi undersøkt hva som kan være gode boligløsninger for mennesker med utfordringer innen rus og psykiske helse som har sammensatte og komplekse hjelpebehov. Undersøkelsen er basert på fokusgruppeintervjuer ...

    • Non-Gaussian Ensemble Optimization 

      Nilsen, Mathias Methlie; Stordal, Andreas Størksen; Raanes, Patrick Nima; Lorentzen, Rolf Johan; Eikrem, Kjersti Solberg (Journal article; Peer reviewed, 2024)
      Ensemble-based optimization (EnOpt), commonly used in reservoir management, can be seen as a special case of a natural evolution algorithm. Stein’s lemma gives a new interpretation of EnOpt. This interpretation enables us ...

    • NorCPM1 and its contribution to CMIP6 DCPP 

      Bethke, Ingo; Wang, Yiguo; Counillon, Francois Stephane; Keenlyside, Noel Sebastian; Kimmritz, Madlen; Fransner, Filippa; Samuelsen, Annette; Langehaug, Helene R.; Svendsen, Lea; Chiu, Ping-Gin; Passos, Leilane G.; Bentsen, Mats; Guo, Chuncheng; Gupta, Alok Kumar; Tjiputra, Jerry; Kirkevåg, Alf; Oliviè, Dirk Jan Leo; Seland, Øyvind; Vågane, Julie Solsvik; Fan, Yuanchao; Eldevik, Tor (Journal article; Peer reviewed, 2021)
      The Norwegian Climate Prediction Model version 1 (NorCPM1) is a new research tool for performing climate reanalyses and seasonal-to-decadal climate predictions. It combines the Norwegian Earth System Model version 1 (NorESM1) ...

    • Nordnes: InSAR prosessering ved bruk av TerraSAR-X og Radarsat-2 bilder (2009-2015). Oppsummeringsrapport (26/2015) 

      Rouyet, Line; Eriksen, Harald Øverli; Lauknes, Tom Rune (Research report, 2015)
      Rapporten presenterer satellittbaserte InSAR resultater fra Nordnes (Troms, Norge) ved bruk av TerraSAR-X (2009–2014) and RADARSAT-2 satellittbilder (2009–2014). Den inkluderer kart med gjennomsnittlige årlig bevegelseshastighet ...

    • Norske havforsuringsdata og FNs bærekraftsmål 14.3 

      Skjelvan, Ingunn; Jeansson, Emil (Research report, 2020)
      IOC (Intergovernmental Oceanographic Commision) har hatt ansvaret for å utvikle en indikator for havforsuring, som er knytta til FN sitt bærekraftsmål for livet i havet. Land, forskere og datasentre har blitt bedt om å ...

    • North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability 

      Siew, Yu Feng; Li, Camille; Ting, Mingfang; Sobolowski, Stefan Pieter; Wu, Yutian; Chen, Xiaodan (Peer reviewed; Journal article, 2021)
      Arctic sea ice extent in autumn is significantly correlated with the winter North Atlantic Oscillation (NAO) in the satellite era. However, questions about the robustness and reproducibility of the relationship persist. ...

    • The northern European shelf as an increasing net sink for CO2 

      Becker, Meike; Olsen, Are; Landschützer, Peter; Omar, Abdirahman; Rehder, Gregor; Rödenbeck, Christian; Skjelvan, Ingunn (Peer reviewed; Journal article, 2021)
      We developed a simple method to refine existing open-ocean maps and extend them towards different coastal seas. Using a multi-linear regression we produced monthly maps of surface ocean fCO2 in the northern European coastal ...

    • Norwegian general practitioners’ perceptions of their depression care – a national survey 

      Grung, Ina Lill Skurtveit; Hjørleifsson, Stefan; Anderssen, Norman; Bringedal, Berit; Ruths, Sabine; Hetlevik, Øystein (Peer reviewed; Journal article, 2024)
      Background The General Practitioner (GP) is often the first professional contact for patients with depression. Depression care constitutes a substantial part of GPs’ workload. Objective To assess how GPs experience their ...

    • Norwegian Sea net community production estimated from O2 and prototype CO2 optode measurements on a Seaglider 

      Possenti, Luca; Skjelvan, Ingunn; Atamanchuk, Dariia; Tengberg, Anders; Humphreys, Matthew P.; Loucaides, Socratis; Fernand, Liam; Kaiser, Jan (Journal article; Peer reviewed, 2021)
      We report on a pilot study using a CO2 optode deployed on a Seaglider in the Norwegian Sea from March to October 2014. The optode measurements required drift and lag correction and in situ calibration using discrete water ...

    • Novel iterative ensemble smoothers derived from a class of generalized cost functions 

      Luo, Xiaodong (Peer reviewed; Journal article, 2021)
      Iterative ensemble smoothers (IES) are among the state-of-the-art approaches to solving history matching problems. From an optimization-theoretic point of view, these algorithms can be derived by solving certain stochastic ...

    • A Novel Moderately Thermophilic Type Ib Methanotroph Isolated from an Alkaline Thermal Spring in the Ethiopian Rift Valley 

      Islam, Tajul; Gessesse, Amare; Garcia-Moyano, Antonio; Murrell, J. Colin; Øvreås, Lise (Peer reviewed; Journal article, 2020)
      Aerobic moderately thermophilic and thermophilic methane-oxidizing bacteria make a substantial contribution in the control of global warming through biological reduction of methane emissions and have a unique capability ...

    • Nowcasting tracks of severe convective storms in West Africa from observations of land surface state 

      Taylor, Christopher M; Klein, Cornelia; Dione, Cheikh; Parker, Douglas John; Marsham, John; Abdoulahat Diop, Cheikh; Fletcher, Jennifer; Saidou Chaibou, Abdoul Aziz; Nafissa, Dignon Bertin; Semeena, Valiyaveetil Shamsudheen; Cole, Steven J; Anderson, Seonaid R (Peer reviewed; Journal article, 2022)
      In tropical convective climates, where numerical weather prediction of rainfall has high uncertainty, nowcasting provides essential alerts of extreme events several hours ahead. In principle, short-term prediction of intense ...

    • Null models for animal social network analysis and data collected via focal sampling: Pre‐network or node network permutation? 

      Puga-Gonzalez, Ivan; Sueur, Cédric; Sosa, Sebastian (Journal article; Peer reviewed, 2020)
      In social networks analysis, two different approaches have predominated in creating null models for hypothesis testing, namely pre‐network and node network permutation approaches. Although the pre‐network permutation ...

    • Numerical Simulations of Viscous Fingering in Fractured Porous Media 

      Berge, Runar Lie; Berre, Inga; Keilegavlen, Eirik; Nordbotten, Jan Martin (Peer reviewed; Journal article, 2024)
      The effect of heterogeneity induced by highly permeable fracture networks on viscous miscible fingering in porous media is examined using high-resolution numerical simulations. We consider the planar injection of a less ...

    • Numerical studies of long-term wettability alteration effects in CO2 storage applications 

      Landa-Marbán, David; Kumar, Kundan; Gasda, Sarah Eileen; Sandve, Tor Harald; Kassa, Abay (Lecture, 2021)
      The wettability of the rock surface in porous media has an effect on the constitutive saturation functions that govern capillary pressure and relative permeability. The term wettability alteration refers to the change of ...

    • A numerical study of flow field and particle deposition in nasal channels with deviant geometry 

      Thune, Eveline Løvaas; Kosinski, Pawel Jan; Balakin, Boris; Alyaev, Sergey (Peer reviewed; Journal article, 2021)
      Deviant geometry of nasal channels results in significant changes to nasal aerodynamics that alter flow resistance, sensation, and the ability to filter aerosols. The invasive, operative modification of nasal geometry might ...

    • Nærings- og arbeidsliv i endring - første år med covid-19-pandemi: Troms og Finnmark 

      Karlstad, Stig (Research report, 2021)
      Utgangspunktet for dette dokumentet har vært å belyse virkninger av og endringstrekk under korona pandemien, samtidig med hvordan pandemien også indirekte gjennom reguleringer og tiltak har påvirket næringsliv og arbeidsmarked. ...