Fakultet for naturvitenskap og teknologi: Nye registreringer

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    • The Cenozoic pre-glacial tectono-sedimentary development of the western Barents Sea margin: implications for uplift and erosion of the sediment source areas 

      Lasabuda, Amando Putra Ersaid; Laberg, Jan Sverre; Knutsen, Stig-Morten; Safronova, Polina; Høgseth, Gert (Conference object; Konferansebidrag, 2017)
      <p>The Cenozoic development of the western Barents Sea continental margin is strongly related to the rifting and seafloor spreading between Norway and Greenland. The margin is characterized by a series of highs and basins that formed as part of the development of a mega-transform zone. To the north, the Spitsbergen Fold and Thrust Belt and the Eocene clinoform development in the Central Basin that ...

    • Is there a break in scaling on centennial time scales in Holocene temperature records? 

      Nilsen, Tine; Rypdal, Kristoffer; Fredriksen, Hege-Beate (Conference object; Konferansebidrag, 2017)

    • From Risk Management to Resilience Management in Critical Infrastructure 

      Rød, Bjarte; Lange, David; Theocharidou, Marianthi; Pursiainen, Christer Henrik (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-07)
      This article discusses critical infrastructure resilience in terms of how it could be incorporated into the existing safety and security practices, namely the ISO 31000 risk management standard. The article starts by outlining the resilience discourse, focusing on the organizational, technological, and societal domains of resilience. It goes on to present an approach to how the risk management ...

    • 2.09 Å resolution structure of E. coli HigBA toxin-antitoxin complex reveals an ordered DNA-binding domain and intrinsic dynamics in antitoxin 

      Jadhav, Pankaj; Sinha, Vikrant; Chugh, Saurabh; Kotyada, Chaithanya; Bachhav, Digvijay; Singh, Ramandeep; Rothweiler, Ulli; Singh, Mahavir (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-29)
      The toxin–antitoxin (TA) systems are small operon systems that are involved in important physiological processes in bacteria such as stress response and persister cell formation. Escherichia coli HigBA complex belongs to the type II TA systems and consists of a protein toxin called HigB and a protein antitoxin called HigA. The toxin HigB is a ribosome-dependent endoribonuclease that cleaves the ...

    • Pedagogical Perspectives of Interdisciplinary Teaching and Research: An Energy System Modelling Outlook in Relation to Energy Informatics 

      Bordin, Chiara; Mishra, Sambeet; Benth, Fred Espen (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-02)
      The purpose of this paper is to present and discuss pedagogical frameworks and approaches to developing, delivering, and evaluating a new interdisciplinary course within the domain of energy informatics at both Master’s and PhD levels. This study is needed because many papers on sustainable energy engineering education concentrate on course content but provide very little information on the ...

    • Integrating incidence-angle compensation in the segmentation of UAVSAR images 

      Cristea, Anca; Doulgeris, Anthony Paul (Conference object; Konferansebidrag, 2018)
      <p>SAR images display a characteristic intensity variation along the range dimension, caused by the fact that the backscattered intensities depend on the incidence angle. In the case of wide-swath images, this intensity variation from near range to far range is significant enough to affect image segmentation performed on absolute intensity values. The effects are an over-segmentation which creates ...

    • Arctic Field Summer Schools: training the next generation of Arctic researchers 

      Doulgeris, Anthony Paul (Conference object; Konferansebidrag, 2018)
      <p>The Arctic Field Summer Schools project is funded by the Research Council of Norway (NFR) and Norwegian Centre for International Cooperation in Education (SIU), under the grant agreement number 261786/H30. <p>The project supports research and education collaboration among UiT - The Arctic University of Norway, University of Alaska Fairbanks (UAF), USA and University of Calgary (UC), Canada. <p>Through ...

    • Modeling Microwave Scattering From Rough Sea Ice Surfaces 

      Xu, Xu; Doulgeris, Anthony Paul; Melandsø, Frank; Brekke, Camilla (Conference object; Konferansebidrag, 2017)
      In this paper, COMSOL Multiphysics® was used to simulate the microwave scattering from the rough sea ice surface. A nonperiodic model and a periodic model were built. The nonperiodic model considers the rough surface of finite length and introduces a tapered incident wave. In this model, the strategy of total and scattered-field decomposition (TSFD) was used to formulate the finite-element method ...

    • Self-similarity of intrasalt thrust faults: Lessons from offshore Levant Basin and the Dead Sea 

      Kartveit, Kyrre Heldal; Omosanya, Kamaldeen Olakunle; Eruteya, Ovie; Johansen, Ståle Emil; Waldmann, Nicolas D.; Reshef, Moshe (Conference object; Konferansebidrag, 2017)
      The Levant Basin in the eastern Mediterranean Sea developed during rifting episodes occurring from Permian to the Early Jurassic (Netzeband et al. 2006; Gardosh et al. 2010), and has been a deep-water basin with a passive continental margin at least since the Cretaceous (Gardosh et al. 2008). Thick sequences of halite and interbedded shales (stringers) were deposited during the infamous Messinian ...

    • Label-free imaging on waveguide platform with enhanced resolution and contrast 

      Jayakumar, Nikhil; Dullo, Firehun Tsige; Dubey, Vishesh Kumar; Ahmad, Azeem; Cauzzo, Jennifer; Mazagao Guerreiro, Eduarda; Snir, Omri; Skalko-Basnet, Natasa; Agarwal, Krishna; Ahluwalia, Balpreet Singh (Conference object; Konferansebidrag, 2021)
      Chip-based Evanescent Light Scattering (cELS) utilizes the multiple modes of a high-index contrast optical waveguide for near-field illumination of unlabeled samples, thereby repositioning the highest spatial frequencies of the sample into the far-field. The multiple modes scattering off the sample with different phase differences is engineered to have random spatial distributions within the integration ...

    • Faszination Nano-Staubteilchen im Kosmos - Astronomie als Puzzle 

      Mann, Ingrid (Conference object; Konferansebidrag, 2018)

    • Radar studies of ionospheric dust - plasma phenomena 

      Mann, Ingrid (Conference object; Konferansebidrag, 2018)
      Dust plasma phenomena occur in the Earth ionosphere in particular in the meteor ablation zone at altitudes ~50-95 km and above where radar meteors form. Radar also detect coherent polar mesospheric radar echoes (PME), i.e. radar echoes that are caused by spatial variations in the plasma refractive index at around 80 to 90 km altitude in the Earth’s mesosphere. During summer, PM(S)E form in the ...

    • Lateral membrane organization as target of an antimicrobial peptidomimetic compound 

      Melcrová, Adéla; Maity, Sourav; Melcr, Josef; de Kok, Niels A. W.; Gabler, Mariella; van der Eyden, Jonne; Stensen, Wenche Gunvor Berg; Svendsen, John Sigurd Mjøen; Driessen, Arnold J. M.; Marrink, Siewert J.; Roos, Wouter H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-07)
      Antimicrobial resistance is one of the leading concerns in medical care. Here we study the mechanism of action of an antimicrobial cationic tripeptide, AMC-109, by combining high speed-atomic force microscopy, molecular dynamics, fluorescence assays, and lipidomic analysis. We show that AMC-109 activity on negatively charged membranes derived from Staphylococcus aureus consists of two crucial steps. ...

    • The Fate of Nanodust near the Sun - Comparison of Sputtering and Sublimation lifetimes during CMEs 

      Baumann, Carsten; Myrvang, Margaretha; Stamm, Johann Immanuel; Mann, Ingrid (Conference object; Konferansebidrag, 2018)
      The dust environment in the inner Solar system has not been probed so far, but ESA’s Solar Orbiter (2020) and NASA’s Parker Solar Probe (2018) are about cross the inner solar system. From [1] we expect a layer of trapper Nanodust around the Sun. [2] investigated the interaction of grains with the Solar wind. But what is the dust’s fate when they are struck by a Coronal Mass Ejection (CME). Are they ...

    • Sputtering through coronal mass ejections and the fate of nanodust near the Sun 

      Baumann, Carsten; Stamm, Johann Immanuel; Myrvang, Margaretha; Mann, Ingrid; Aasmundveit, Jan Fredrik (Conference object; Konferansebidrag, 2018)

    • Statistical properties of fluctuation driven flows in the outboard mid-plane SOL of Alcator C-Mod 

      Kube, Ralph; Garcia, Odd Erik; Theodorsen, Audun; Kuang, Adam; Brunner, Dan; LaBombard, Brian; Terry, Jim L. (Conference object; Konferansebidrag, 2018)
      The scale length of the radial density profile in scrape-off layer plasmas has been shown to depend on the line-averaged plasma density. While first reported on AlcatorC-Mod, recent work verifies this phenomena in JET and ASDEX Upgrade. In low density plasmas with a sheath-limited SOL, the density profiles present a two-scale structure which allows the separation of the SOL into two distinct regions. ...

    • Glacigenic landforms and sediments in Store Koldewey Trough, NE Greenland – preliminary results 

      Olsen, Ingrid Leirvik; Forwick, Matthias; Laberg, Jan Sverre; Rydningen, Tom Arne; Husum, Katrine (Conference object; Konferansebidrag, 2018-04)
      The glaciation history of NE Greenland remains poorly constrained, resulting in conceptual and uncertain reconstructions of the configuration of the Greenland Ice Sheet during the Last Glacial Maximum (c. 24-19 ka BP), as well as the timing and the dynamics of the deglaciation. New studies suggests that the ice sheet in NE Greenland probably was more dynamic than previously thought, extending all ...

    • Arctic, marine bacteria and their ability to produce polyhydroxyalkonates (PHAs) using underexploited biomass as nutrient source 

      Christensen, Mikkel (Conference object; Konferansebidrag, 2017)
      <p>In this project we are studying marine bacteria and their ability to produce polyhydroxyalkonates (PHAs), a fully biodegradable polyester known as bioplastic. Bioplastics can replace petroleum-based plastics in many applications. PHAs accumulate as intracellular carbon and energy storages when the bacteria grow in an environment with nutrient imbalance. The monomeric building blocks in the PHA ...

    • Arctic marine bacteria for bioplastic production 

      Christensen, Mikkel (Conference object; Konferansebidrag, 2018)
      <p>Oil-based plastic production now exceeds 330 Mt annually1 and poses a major environmental problem. Polyhydroxyalkanoates (PHA) is a group of bioplastic polyesters that can replace oil-based plastics in many applications, but economic costs are higher and industrial-scale production still limited. PHA is produced naturally by diverse groups of bacteria and stored intracellularly as hydrophobic ...

    • The Early to Middle Cenozoic Paleoenvironment and Erosion Estimates for the northwestern Barents Sea 

      Lasabuda, Amando Putra Ersaid; Laberg, Jan Sverre; Knutsen, Stig-Morten; Safronova, Polina (Conference object; Konferansebidrag, 2017)
      <p>The northwestern Barents Sea continental margin is a structurally complex area characterized by a series of basins and highs. It’s Cenozoic development was influenced by: 1) the formation of the Spitsbergen fold-andthrust belt towards the north and a pull-apart basin, the Vestbakken Volcanic Province, to the south, and 2) the subsequent rifting and opening of the Fram Strait, the deep-water gateway ...