Viser treff 1-20 av 653

    • In vitro pepsin digestibility and amino acid composition in soluble and residual fractions of hydrolyzed chicken feathers 

      Adler, Steffen Andreas; Slizyte, Rasa; Honkapää, Kaisu; Løes, Anne-Kristin (Journal article; Peer reviewed, 2018-05-23)
      Beta-keratin in poultry feathers is a structural protein that is resistant to degradation due to disulfide and hydrogen bonds. Feather meal can be a valuable feed compound if the digestibility can be increased. The objective ...
    • Ship speed power performance under relative wind profiles in relation to sensor fault detection 

      Perera, Lokukaluge Prasad; Mo, Brage (Journal article; Peer reviewed, 2018-12)
      Statistical Data analysis and visualization approaches to identify ship speed power performance under relative wind (i.e. apparent wind) profiles are considered in this study. Ship performance and navigation data of a ...
    • 3D motion dynamics of axisymmetric bodies falling through water 

      Alsos, Hagbart Skage; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2018-12-01)
      A new simplified method for analysis of 3D motion dynamics of axisymmetric slender bodies falling from air through water is presented. Slender-body theory for potential flow of incompressible water is combined with 2D + t ...
    • Menneskelige og organisatoriske årsaker til rømming av oppdrettslaks og regnbueørret 

      Thorvaldsen, Trine; Føre, Heidi Moe; Tinmannsvik, Ranveig Kviseth; Okstad, Eivind Halvard (SINTEF Ocean rapporter;2018:01362 A, Research report, 2018-12-14)
      Denne rapporten beskriver menneskelige og organisatoriske årsaker til rømming av oppdrettsfisk. Målet med arbeidet har vært økt kunnskap om medvirkende og bakenforliggende årsaker til rømming. Resultatene som presenteres ...
    • Semiglobal exponential stability of a counter-current and co-current guidance scheme 

      Caharija, Walter; Grøtli, Esten Ingar; Pettersen, Kristin Ytterstad (Journal article; Peer reviewed, 2018)
      A control technique for counter-current and co-current guidance of underactuated marine vehicles is revisited and stronger stability properties are shown. In particular, the stronger property of uniform semiglobal exponential ...
    • Controller Analysis in Real-Time Hybrid Model Testing of an Offshore Floating System 

      Vilsen, Stefan Arenfeldt; Sauder, Thomas Michel; Føre, Martin; Sørensen, Asgeir Johan (ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, Volume 7B: Ocean Engineering;OMAE2018-77859,, Chapter, 2018-06-25)
      This paper presents an experimental study using Real-Time Hybrid Model (ReaTHM) testing of a moored floating cylindrical buoy, conducted in a wave basin. ReaTHM testing is a method for studying the dynamics of marine ...
    • Free Surface Reconstruction for Phase Accurate Irregular Wave Generation 

      Aggarwal, Ankit; Pakozdi, Csaba; Bihs, Hans; Myrhaug, Dag; Alagan Chella, Mayilvahanan (Journal article; Peer reviewed, 2018-09-29)
      The experimental wave paddle signal is unknown to the numerical modellers in many cases. This makes it quite challenging to numerically reproduce the time history of free surface elevation for irregular waves. In the present ...
    • Evaluation of Nonlinear Material Behavior for Offshore Structures Subjected to Accidental Actions 

      Storheim, Martin; Alsos, Hagbart Skage; Amdahl, Jørgen (ASME digital collection;OMAE-17-1044, Journal article; Peer reviewed, 2018-01-09)
      Evaluation of the nonlinear structural response of any structure is a challenging task; a range of input parameters are needed, most of which have significant statistical variabil- ity and the evaluations require a high ...
    • Risk assessments in the Norwegian aquaculture industry: Status and improved practice 

      Holmen, Ingunn Marie; Utne, Ingrid Bouwer; Haugen, Stein (Journal article; Peer reviewed, 2018-11)
      The Norwegian aquaculture industry has the potential to become the country’s leading ocean industry in the future. More than 99% of the produced biomass is Atlantic salmon and trout. Norwegian fish farming is characterised ...
    • OC2018 A-116 - Loads, design and operation of floaters in the Arctic - Ptil – NORD ST20 

      Ommani, Babak; Berthelsen, Petter Andreas; Firoozkoohi, Reza (SINTEF Ocean rapporter;OC2018 A-116, Research report, 2018-12-11)
      This report presents results from hydrodynamic analysis of interaction between glacial ice and semisubmersible drilling units, as part of the Petroleum Safety Authority's project "NORD ST20 Loads, design and operation of ...
    • D3.1 Fishery Pilot Definition 

      Granholm, Göran; Aarsæther, Karl Gunnar; Uriondo, Zigor; Quincozes, Iñaki; Jensen, Jørgen Haavind; Haugen, Joakim (Data-Driven Bioeconomy;D3.1, Research report, 2017-10-20)
      The objective of WP3 Fishery Pilot is to demonstrate how Big Data can boost the fishery sector. The Fishery Pilot focus is on two separate types of fisheries in two countries: Oceanic Tuna fisheries in Spain and small ...
    • Force actuated real-tme hybrid model testing of a moored vessel: A case study investigating force errors 

      Ueland, Einar Skiftestad; Skjetne, Roger; Vilsen, Stefan Arenfeldt (Journal article; Peer reviewed, 2018)
      This paper presents a study where real-time hybrid testing is used to emulate a moored barge. The barge is modelled physically while the mooring forces are simulated numerically and actuated onto the physical substructure. ...
    • An anisotropic friction model in non-bonded flexible risers 

      Dai, Tianjiao; Sævik, Svein; Ye, Naiquan (Journal article; Peer reviewed, 2018-05)
      The present paper addresses small scale friction tests and an anisotropic friction model to predict friction for the interface between the anti-wear tape and tensile armors in non-bonded flexible risers. Small scale friction ...
    • Path planning for marine vehicles using Bezier curves 

      Hassani, Vahid; Lande, Simen V. (Journal article; Peer reviewed, 2018-05)
      Over the past few years maritime sector has witnessed an increasing interest in use of autonomous ships and in particular Autonomous Surface Vehicles (ASV) in complex applications with high associated risks. There is an ...
    • A 2D Experimental and Numerical Study of Moonpools With Recess 

      Ravinthrakumar, Senthuran; Kristiansen, Trygve; Ommani, Babak (ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering;OMAE2018-78326, Chapter, 2018-06-25)
      Moonpool resonance is investigated in a two-dimensional setting in terms of regular, forced heave motions of a model with moonpool with different rectangular-shaped recess configurations. A recess is a reduced draft zone ...
    • Numerical and experimental study on the drainage and collapse of a floating flexible bag structure 

      Kristiansen, David; Su, Biao; Volent, Zsolt (Journal article; Peer reviewed, 2018-11)
      This paper addresses the possible drainage and collapse of closed flexible cages in sea-based fish farming. A closed flexible cage is a floating bag structure containing water that is enclosed from the ambient water. ...
    • Ocean futures: Exploring stakeholders' perceptions of adaptive capacity to changing marine environments in Northern Norway 

      Tiller, Rachel; Richards, Russell (Journal article; Peer reviewed, 2018-09)
      Globally, the projected increase in sea surface temperature is expected to facilitate large changes in the marine food web, affect coastal communities, marine ecosystem goods and services, global fisheries, tourism, ...
    • The once and future treaty: Towards a new regime for biodiversity in areas beyond national jurisdiction 

      Tiller, Rachel; De Santo, Elizabeth; Mendenhall, Elizabeth; Nyman, Elizabeth (Journal article; Peer reviewed, 2018-11)
      The current regime governing Areas Beyond National Jurisdiction (ABNJ) as a global commons has resulted in overutilization of fisheries resources and patchwork attempts to regulate resource extraction. States are looking ...
    • Effects of sample preparation on methylmercury concentrations in arctic organisms 

      Braaten, Hans Fredrik Veiteberg; Harman, Christopher Peter; Øverjordet, Ida Beathe; Larssen, Thorjørn (Journal article; Peer reviewed, 2014-04-09)
      The biogeochemical cycling of mercury (Hg) in the marine environment is an issue of global concern, as consumption of marine fish is a major route of human exposure to the toxic specie methylmercury (MeHg). The most widely ...
    • OMAE2017-62056 Effective Power and Speed Loss of Underwater Vehicles in Close Proximity to Regular Waves 

      Daum, Stefan; Greve, Martin; Skejic, Renato (ASME digital collection;OMAE2017-62056, Chapter, 2017-06-30)
      The present study is focused on performance issues of underwater vehicles near the free surface and gives insight into the analysis of a speed loss in regular deep water waves. Predictions of the speed loss are based on ...