• The parameterized complexity of finding minimum bounded chains 

  Blaser, Nello; Brun, Morten; Salbu, Lars Moberg; Vågset, Erlend Raa (Journal article; Peer reviewed, 2024)

  Finding the smallest d-chain with a specific (d − 1)-boundary in a simplicial complex is known as the Minimum Bounded Chain problem (MBCd). MBCd is NP-hard for all d ≥2. In this paper, we prove that it is also W[1]-hard ...

• Simplicial Constructions in Applied Topology 

  Salbu, Lars Moberg (Doctoral thesis, 2024-10-16)

  I topologisk dataanalyse (TDA) analyserer man data ved å først konstruere et rom som fanger opp interessante egenskaper i dataen, og så studerer man topologien til dette rommet. Det er praktisk å jobbe med rom som har en ...

• Programmering for læring i fysikkfaget 

  Aasarmoen, Elias (Master thesis, 2024-08-21)

  Med de nye læreplanene har programmering kommet inn for fullt i norsk skole. I fysikk skal programmering i utgangspunktet brukes som et middel for læring i faget. Dette, samt egen interesse for programmering, førte til at ...

• Modelling of mixed-mechanism stimulation for the enhancement of geothermal reservoirs 

  Dang, Trung Hau; Keilegavlen, Eirik; Berre, Inga (Journal article; Peer reviewed, 2024)

  Hydraulic stimulation is a critical process for increasing the permeability of fractured geothermal reservoirs. This technique relies on coupled hydromechanical processes induced through pressurized fluid injection into ...

• Perovskite Solar Cells: Materials, Fabrication, and Characterization 

  Lingaretnam, Vithursha (Master thesis, 2024-06-03)

• Towards greener wind power: Nanodiamond-treated flax fiber composites outperform standard glass fiber composites in impact fatigue tests 

  Hinzmann, Carsten; Johansen, Nicolai Frost-Jensen; Hasager, Charlotte Bay; Holst, Bodil (Journal article; Peer reviewed, 2024)

  Wind energy is facing two major problems, recyclability of wind turbine blades, primarily made from fiberglass, and rain erosion on the blade’s leading edges. Here, we show that flax fiber reinforced epoxy composites have ...

• Simulated Abrupt Shifts in Aerobic Habitats of Marine Species in the Past, Present, and Future 

  Fröb, Friederike; Bourgeois, Timothée; Goris, Nadine; Schwinger, Jörg; Heinze, Christoph (Journal article; Peer reviewed, 2024)

  The physiological tolerances of marine species toward ambient temperature and oxygen can jointly be evaluated in a single metric: the metabolic index. Changes therein characterize a changing aerobic habitat tailored to ...

• Failsafe layer for wind turbine blades: Erosion protection of glass fiber composite through nanodiamond-treated flax composite top layer 

  Hinzmann, Carsten; Johansen, Nicolai Frost-Jensen; Hasager, Charlotte Bay; Holst, Bodil (Journal article; Peer reviewed, 2024)

  Wind turbine blades are mainly made from E-glass fiber (GF) epoxy composites, because of their good ratio of strength to weight and costs. With the increase in blade length and tip speed, the problem of leading edge erosion ...

• Nanodiamond-treated Flax: Reducing Erosion on Wind Turbine Blades 

  Hinzmann, Carsten (Doctoral thesis, 2024-10-03)

  Arbeidet som presenteres i denne oppgaven undersøker nye materialer for vindturbinblader som er mer erosjonsbestandige enn de vanlig brukte glassfiber-forsterkede komposittene (GFRCs). Med den pågående økningen i størrelsen ...

• Assessing rock glaciers for their hydrological significance in the Semi-arid Andes, Chile 

  Hauglin, Emma (Master thesis, 2024-08-05)

  Rock glacier plays an important hydrological role in the semi-arid Chilean Andes, acting as buffers against water scarcity in a warming climate. This role will become more significant in the future since the glaciers in ...

• Recent advances in emerging integrated anticorrosion and antifouling nanomaterial-based coating solutions 

  Thomas, Paul; Sahoo, Bichitra Nanda; Thomas, Peter James; Greve, Martin Møller (Journal article; Peer reviewed, 2024)

  The rapid progress in the marine industry has resulted in notable challenges related to biofouling and surface corrosion on underwater infrastructure. Conventional coating techniques prioritise individual protective ...

• Environmental drivers of increased ecosystem respiration in a warming tundra 

  Maes, S.L.; Dietrich, J.; Midolo, G.; Schwieger, S.; Kummu, M.; Vandvik, Vigdis; Aerts, R.; Althuizen, Inge; Biasi, C.; Björk, R.G.; Böhner, Hanna; Carbognani, M.; Chiari, G.; Christiansen, Casper Tai; Clemmensen, K.E.; Cooper, Elisabeth J.; Cornelissen, J.H.C.; Elberling, Bo; Faubert, P.; Fetcher, N.; Forte, T.G.W.; Gaudard, Joseph; Gavazov, K.; Guan, Z.; Guðmundsson, J.; Gya, Ragnhild; Hallin, S.; Hansen, Brage Bremset; Haugum, Siri Vatsø; He, J.-S.; Hicks Pries, Pries; Hovenden, M.J.; Jalava, M.; Jónsdóttir, I.S.; Juhanson, J.; Jung, J.Y.; Kaarlejärvi, E.; Kwon, M.J.; Lamprecht, R.E.; Le Moullec, Mathilde; Lee, Hanna; Marushchak, M.E.; Michelsen, A; Munir, T.M.; Myrsky, E.M.; Nielsen, C.S.; Nyberg, M.; Olofsson, J.; Óskarsson, H.; Parker, T.C.; Pedersen, E.P.; Petit Bon, Matteo; Petraglia, A.; Raundrup, K.; Ravn, N.M.R.; Rinnan, R.; Rodenhizer, H.; Ryde, I.; Schmidt, N.M.; Schuur, E.A.G.; Sjögersten, S.; Stark, S.; Strack, M.; Tang, J.; Tolvanen, A.; Töpper, Joachim Paul; Väisänen, M.K.; van Logtestijn, Logtestijn; Voigt, C.; Walz, J.; Weedon, J.T.; Yang, Y.; Ylänne, H.; Björkman, Mats Peter; Sarneel, J.M.; Dorrepaal, E. (Journal article; Peer reviewed, 2024)

  Arctic and alpine tundra ecosystems are large reservoirs of organic carbon1,2. Climate warming may stimulate ecosystem respiration and release carbon into the atmosphere3,4. The magnitude and persistency of this stimulation ...

• 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 ...

• Impact of gas type on microfluidic drainage experiments and pore network modeling relevant for underground hydrogen storage 

  Lysyy, Maksim; Liu, Na; Landa-Marbán, David; Ersland, Geir; Fernø, Martin (Journal article; Peer reviewed, 2024)

  Underground hydrogen storage (UHS) in geological reservoirs is proposed as a technically feasible solution to balance mismatch between supply and demand in emerging markets. However, unique hydrogen properties and coupled ...

• Numerical Simulations of Viscous Fingering in Fractured Porous Media 

  Berge, Runar Lie; Berre, Inga; Keilegavlen, Eirik; Nordbotten, Jan Martin (Journal article; Peer reviewed, 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 ...

• Dispersive Wave Focusing on a Shear Current: Part 2—Nonlinear Effects 

  Zheng, Zibo; Li, Yan; Ellingsen, Simen Ådnøy (Journal article; Peer reviewed, 2024)

  Continuing our recent work [Ellingsen et al., Water Waves (2024)] we investigate the influence of vertically sheared currents on the surface elevation as well as the kinematics of dispersively focusing wave groups up to ...

• The 11th Society of Petroleum Engineers Comparative Solution Project: Problem Definition 

  Nordbotten, Jan Martin; Fernø, Martin; Flemisch, Bernd; Kovscek, Anthony R.; Lie, Knut-Andreas (Journal article; Peer reviewed, 2024)

  This article contains the description of, and call for participation in, the 11th Society of Petroleum Engineers Comparative Solution Project (the 11th SPE CSP, https://spe.org/csp). It is motivated by the simulation ...

• Experimentally assessing the uncertainty of forecasts of geological carbon storage 

  Nordbotten, Jan Martin; Fernø, Martin; Flemisch, Bernd; Juanes, Ruben; Jørgensen, Magne (Journal article; Peer reviewed, 2024)

  Geological storage of carbon dioxide is a cornerstone in almost every realistic emissions reduction scenario outlined by the Intergovernmental Panel on Climate Change. Our ability to accurately forecast storage efficacy ...

• Atomic resolution transmission electron microscopy visualisation of channel occupancy in beryl in different crystallographic directions 

  Hanser, C. S.; Vullum, Per Erik; Van Helvoort, Antonius; Schmitz, F.D.; Häger, Tobias; Botcharnikov, R; Holst, Bodil (Journal article; Peer reviewed, 2024)

  The causes of colour in beryl have been a research topic for decades. For some varieties, such as emerald (green, coloured by Cr3+ and/or V3+), the main cause of colour is substitutions by metal atoms within the framework. ...

• Electrode Materials for Hydrogen Evolution Reaction 

  Nagulanantham, Lavanya (Master thesis, 2024-06-03)

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