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norskArtikler, rapporter og annet (teknologi og sikkerhet): Nye registreringer
Viser treff 281-300 av 313
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Marine stewardship and complexity – How to enhance a better process of risk governance in the Norwegian area of the Arctic Ocean?
(Conference object; Konferansebidrag, 2016-01) -
Infrared Thermal Signature Evaluation of a Pure Ice Block
(Conference object; Konferansebidrag, 2015-08-23)Marine operations in cold climates are subjected to heavy ice accretion, which can lead to heavy ice loads causing safety concerns. Atmospheric and sea spray icing can cause severe ice accretion on structures. Ice detection over the relatively larger surface area of marine platforms and vessels could be significant for ice mitigation and its removal in cold climates. A thermal ice signature ... -
Infrared Thermal Signature Evaluation of a Pure and Saline Ice for Marine Operations in Cold Climate
(Peer reviewed; Journal article; Tidsskriftsartikkel, 2015)Marine operations in cold climates are subjected to abundant ice accretion, which can lead to heavy ice loads over larger surface area. For safe and adequate operations on marine vessels over a larger area, remote ice detection and ice mitigation system can be useful. To study this remote ice detection option, lab experimentation was performed to detect the thermal gradient of ice with the infrared ... -
Multiphysics Simulation of Infrared Signature of an Ice Cube
(Conference object; Konferansebidrag, 2015-12-11)This poster presents the Multiphysics numerical methodologies used to simulate the Infrared (IR) signature of an ice cube when taken out of the cold environment (-28 C) and allowed to warm at room temperature conditions by means of natural convection. The ice cube is chosen to simplify the geometry. The cubical geometry can be discretized simply and hence allows easy application of Multiphysics ... -
An expert-based approach to production performance analysis of oil and gas facilities considering time-independent Arctic operating conditions
(Journal article; Tidsskriftartikkel, 2016-03)The availability and throughput of offshore oil and gas plants operating in the Arctic are adversely influenced by the harsh environmental conditions. One of the major challenges in quantifying such effects is lack of adequate life data. The data collected in normal-climate regions cannot effectively reflect the negative effects of harsh Arctic operating conditions on the reliability, availability, ... -
Prediction of the long-term performance of green liquor dregs as a sealing layer to prevent the formation of acid mine drainage
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-08)One of the mining industry's main concerns is the management of waste rock and tailings generated by sulfide ore extraction. Upon exposure of atmospheric oxygen, iron sulfides oxidize generating acidity. Infiltrating water form a metal-rich acidic leachate called acid mine drainage (AMD), that can cause serious environmental problems. Green liquor dregs (GLD) is a material that resists the passage ... -
Dynamic spare parts transportation model for Arctic production facility
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-14)Timely delivery of the required spare parts plays an important role in meeting the availability target and reducing the downtime of production facilities. Spare parts logistics is affected in complex ways while operating in the Arctic, since the area is sparsely populated and has insufficient infrastructure. It is also greatly affected by the distinctive operational environment of the region, ... -
Shipping oil from the Russian Arctic: Past experiences and future prospects
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06)Transport of oil from Russian Arctic ports to Western markets was insignificant prior to 2002. In 2002, there was a major surge, with 5 million tonnes delivered westwards through the Barents Sea. By 2004, this had increased to 12 million tonnes. Since then, annual volumes have been on levels between 9 and 15 million tonnes. In the near future, the flow of oil cargo in the Arctic may rise ... -
Application of a 2-D approximation technique for solving stress analyses problem in FEM
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-24) -
Review of the phenomenon of fluidization and its numerical modelling techniques
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-24) -
Marine icing observed on KV Nordkapp during a cold air outbreak with a developing polar low in the Barents sea.
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06)Marine icing is a phenomenon that may occur for temperatures below subfreezing where sea spray either is lofted from the sea surface or being generated by waves interacting with a ship or a structure. On a voyage from Tromsø to the waters east of Bjørnøya late February 1987, the Norwegian Coast Guard vessel KV Nordkapp experienced heavy icing due to a polar low that raged over these waters during ... -
Group Based Asymmetry – A Fast Saliency Algorithm
(Chapter; Bokkapittel, 2015-12-18)In this paper, we propose a saliency model that makes two major changes in a latest state-of-the-art model known as group based asymmetry. First, based on the properties of the dihedral group D4 we simplify the asymmetry calculations associated with the measurement of saliency. This results is an algorithm which reduces the number of calculations by at-least half that makes it the fastest among the ... -
Finite element analysis of human femur bone
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-04)An effort is made to analyse the stresses experienced by the human femur. In order to achieve these results a CAD model was developed by using the 3-D scanning of generic human femur for an individual of 70 kg weight (approx. averaged adult weight). The marrow cavity has been approximated as a hollow cylinder. The FEM model was built using solid tetrahedral element (20-noded 186 structural ... -
Bioremediation Treatment of Hydrocarbon-Contaminated Arctic Soils: Influencing Parameters
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014) -
Study on enzymatic activities and behaviors of heavy metal in sediment–plant at muddy tidal flat in Yangtze Estuary
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014-09-02) -
Study of Refrigerants for Cold Climate Heat Pump Operations
(Conference object; Konferansebidrag, 2014) -
Multi-fluidic Simulation using Multiphysics tools: Case Study on a LNG Plant
(Conference object; Konferansebidrag, 2014) -
Selection of a high performance alloy for gas turbine blade using multiphysics analysis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014-04-03)With the extensive increase in the utilization of energy resources in the modern era, the need of energy extraction from various resources has pronounced in recent years. Thus comprehensive efforts have been made around the globe in the technological development of turbo machines where means of energy extraction is energized fluids. This development led the aviation industry to power boost due to ... -
Multiphysics design optimization for aerospace applications: Case study on helicopter loading hanger
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014)This paper presents the Multiphysics technique applied in the design optimization of a loading hanger for an aerial crane. In this study, design optimization is applied on the geometric modelling of a part being used in an aerial crane operation. A set of dimensional and loading requirements are provided. Various geometric models are built using SolidWorks® Computer Aided Design (CAD) Package. In ... -
Risk governance - a more procedural view
(Conference object; Konferansebidrag, 2014)
