Nye registreringer

  • Optimization of Pure-Component LNG Cascade Processes with Heat Integration 

    Eiksund, Oddmar; Brodal, Eivind; Jackson, Steven (Journal article, 2018-01-15)
    Liquefaction of natural gas is an energy-intensive process in which the energy efficiency depends on the number of compressors stages and the heat integration scheme. The aim of the study is to systematically evaluate process ...
  • Ice intelligence retrieval by remote sensing - Possibilities and challenges in an operational setting 

    Skarbø, Runa A.; Løset, Sveinung (Peer reviewed; Chapter, 2017)
    Detecting ice drift velocity when operating offshore in ice-covered waters is crucial during marine operations, as ice actions affect station keeping and ice management. Furthermore, other ice data/intelligence such as ice ...
  • Probability distribution functions for intermittent scrape-off layer plasma fluctuations 

    Theodorsen, Audun; Garcia, Odd Erik (Journal article; Peer reviewed, 2018-01-24)
    A stochastic model for intermittent fluctuations in the scrape-off layer of magnetically confined plasmas has been constructed based on a super-position of uncorrelated pulses arriving according to a Poisson process. In ...
  • Cascading lake drainage on the Greenland Ice Sheet triggered by tensile shock and fracture 

    Christoffersen, Poul; Bougamont, Marion; Hubbard, Alun; Doyle, Samuel H.; Grigsby, Shane; Pettersson, Rickard (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-14)
    Supraglacial lakes on the Greenland Ice Sheet are expanding inland, but the impact on ice flow is equivocal because interior surface conditions may preclude the transfer of surface water to the bed. Here we use a ...
  • Glacigenic sedimentation pulses triggered postglacial gas hydrate dissociation 

    Karstens, Jens; Haflidason, Haflidi; Becker, Lukas W.M.; Berndt, Christian; Rüpke, Lars; Planke, Sverre; Liebetrau, Volker; Schmidt, Markus; Mienert, Jürgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-12)
    Large amounts of methane are stored in continental margins as gas hydrates. They are stable under high pressure and low, but react sensitively to environmental changes. Bottom water temperature and sea level changes were ...
  • EURODELTA-Trends, a multi-model experiment of air quality hindcast in Europe over 1990-2010 

    Colette, Augustin; Andersson, Camilla; Manders, Astrid; Mar, Kathleen; Mircea, Mihaela; Pay, Maria-Teresa; Raffort, Valentin; Tsyro, Svetlana G.; Cuvelier, Cornelius; Adani, Mario; Bessagnet, Bertrand; Bergström, Robert; Briganti, Gino; Butler, Tim; Cappelletti, Andrea; Couvidat, Florian; D'Isidoro, Massimo; Doumbia, Thierno; Fagerli, Hilde; Granier, Claire; Heyes, Chris; Klimont, Zig; Ojha, Narendra; Otero, Noelia; Schaap, Martijn; Sindelarova, Katarina; Stegehuis, Annemiek I.; Roustan, Yelva; Vautard, Robert; Van Meijgaard, Erik; Garcia Vivanco, Marta; Wind, Peter Ariaan (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-05)
    The EURODELTA-Trends multi-model chemistry-transport experiment has been designed to facilitate a better understanding of the evolution of air pollution and its drivers for the period 1990–2010 in Europe. The main ...
  • Evaluation of a method to derive ionospheric conductivities using two auroral emissions (428 and 630 nm) measured with a photometer at Tromsø (69.6°N) 

    Adachi, K; Nozawa, Satonori; Ogawa, Y; Brekke, Asgeir; Hall, Chris; Fujii, Ryochi (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-03)
    This paper mainly aims at evaluating capabilities of derivation of ionospheric conductivities using two principal auroral emissions (427.8 and 630 nm). We have evaluated a photometric method of derivation of ionospheric ...
  • Prospecting biotechnologically-relevant monooxygenases from cold sediment metagenomes: An in silico approach 

    Musumeci, Matias A.; Lozada, Mariana; Rial, Daniela V.; Cormack, Walter P. Mac; Jansson, Janet K.; Sjöling, Sara; Carroll, JoLynn; Dionisi, Hebe M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-09)
    The goal of this work was to identify sequences encoding monooxygenase biocatalysts with novel features by in silico mining an assembled metagenomic dataset of polar and subpolar marine sediments. The targeted enzyme ...
  • Labilibaculum manganireducens gen. nov., sp. nov. and Labilibaculum filiforme sp. nov., Novel Bacteroidetes Isolated from Subsurface Sediments of the Baltic Sea 

    Vandieken, Verona; Marshall, Ian P.G.; Niemann, Helge; Engelen, Bert; Cypionka, Heribert (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-05)
    Microbial communities in deep subsurface sediments are challenged by the decrease in amount and quality of organic substrates with depth. In sediments of the Baltic Sea, they might additionally have to cope with an increase ...
  • Classification of low backscatter ocean regions using log-cumulants 

    Skrunes, Stine; Brekke, Camilla (Conference object; Konferansebidrag, 2015-01)
    In a synthetic aperture radar image, low backscatter regions of various origin can be observed in ocean areas. Operational oil spill detection services work to discriminate anthropogenic oil spills from natural phenomena such ...
  • Stochastic modeling of scrape-off layer fluctuations 

    Kube, Ralph; Theodorsen, Audun; Garcia, Odd Erik; Brunner, Daniel; Kuang, Adam; LaBombard, Brian; Terry, James L. (Conference object; Konferansebidrag, 2017-08-24)
    1. Stochastic model of data time series <br> 2. Comparison to experimental measurements
  • Metallo-β-lactamase inhibitors by bioisosteric replacement: preparation, activity and binding 

    Skagseth, Susann; Akhter, Sundus; Paulsen, Marianne H; Muhammad, Zeeshan; Samuelsen, Ørjan; Leiros, Hanna-Kirsti S.; Bayer, Annette (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-14)
    Bacterial resistance is compromising the use of β-lactam antibiotics including carbapenems. The main resistance mechanism against β-lactams is hydrolysis of the β-lactam ring mediated by serine- or metallo-β-lactamases ...
  • Dark zone of the Greenland Ice Sheet controlled by distributed biologically-active impurities 

    Ryan, Jonathan C.; Hubbard, Alun Lloyd; Stibal, Marek; Irvine-Fynn, Tristam D.; Cook, Joseph; Smith, Lawrence C.; Cameron, Karen; Box, Jason E (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-14)
    Albedo—a primary control on surface melt—varies considerably across the Greenland Ice Sheet yet the specific surface types that comprise its dark zone remain unquantified. Here we use UAV imagery to attribute seven distinct ...
  • Temperature and thermal emission of cosmic dust in the vicinity of the Sun, Vega and Fomalhaut. 

    Myrvang, Margaretha; Baumann, Carsten; Mann, Ingrid; Stamm, Johann Immanuel (Conference object; Konferansebidrag, 2018)
  • Dynamics of Dust Particles near Sun, Vega and Fomalhaut 

    Stamm, Johann Immanuel; Baumann, Carsten; Czechowski, Andrzej; Mann, Ingrid; Myrvang, Margaretha (Conference object; Konferansebidrag, 2018)
  • Effects of low oxygen concentrations on aerobic methane oxidation in seasonally hypoxic coastal waters 

    Steinle, Lea; Maltby, Johanna; Treude, Tina; Kock, Annette; Bange, Hermann W.; Engbersen, Nadine; Zopfi, Jakob; Lehmann, Moritz F.; Niemann, Helge (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-29)
    Coastal seas may account for more than 75 % of global oceanic methane emissions. There, methane is mainly produced microbially in anoxic sediments from which it can escape to the overlying water column. Aerobic methane ...
  • Pulsating aurora and cosmic noise absorption associated with growth-phase arcs 

    McKay, Derek; Partamies, Noora; Vierinen, Juha (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-18)
    The initial stage of a magnetospheric substorm is the growth phase, which typically lasts 1–2 h. During the growth phase, an equatorward moving, east–west extended, optical auroral arc is observed. This is called a ...
  • Non-triggered auroral substorms and long-period (1–4 mHz) geomagnetic and auroral luminosity pulsations in the polar cap 

    Yagova, Nadezda; Nosikova, Natalia; Baddeley, Lisa; Kozyreva, Olga; Lorentzen, Dag A.; Pilipenko, Vyacheslav; Johnsen, Magnar G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-08)
    A study is undertaken into parameters of the polar auroral and geomagnetic pulsations in the frequency range 1– 4 mHz (Pc5/Pi3) during quiet geomagnetic intervals preceding auroral substorms and non-substorm background ...
  • The red-sky enigma over Svalbard in December 2002 

    Sigernes, F.; Lloyd, N.; Hoppe, U.-P.; Degenstein, D.; Shumilov, N.; Moen, J.; Gjessing, Y.; Havnes, O.; Skartveit, A.; Raustein, E.; Ørbæk, J.B.; Deehr, CS (Journal article; Tidsskriftartikkel; Peer reviewed, 2005-07-27)
    On 6 December 2002, during winter darkness, an extraordinary event occurred in the sky, as viewed from Longyearbyen (78° N, 15° E), Svalbard, Norway. At 07:30 UT the southeast sky was surprisingly lit up in a deep red ...
  • Privacy preserving distributed computation of community health research data 

    Andersen, Anders; Saus, Merete (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-19)
    Research in community health introduces challenges regarding analysis of the research data. It involves multiple actors in a varity of arenas, and it is often directed towards the local community and children and their ...

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