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    • Cryoballoon vs. radiofrequency catheter ablation: insights from NOrwegian randomized study of PERSistent Atrial Fibrillation (NO-PERSAF study) 

      Shi, Libin; Rossvoll, Ole; Tande, Pål Morten; Schuster, Peter Moritz; Solheim, Eivind; Chen, Jian (Peer reviewed; Journal article, 2022)
      Aims - Pulmonary vein isolation (PVI) is still regarded as a cornerstone for treatment of persistent atrial fibrillation (AF). This study evaluated the effectiveness of PVI performed with cryoballoon ablation (CBA) in ...

    • Cryogenic CO2 condensation and membrane separation of syngas for large-scale LH2 production 

      Berstad, David Olsson; Wilhelmsen, Øivind; Skjervold, Vidar T.; Nekså, Petter (Chapter, 2017)
      Liquid hydrogen (LH2) has the potential to become a global energy commodity analogous to liquefied natural gas (LNG) in the future. This will require LH2 production capacities of similar scale as for large-scale LNG plants. ...

    • Cryogenic cold utilization and system integration possibilities for LNG-driven fishing vessels 

      Saeed, Muhammad Zahid; Widell, Kristina Norne; Hafner, Armin; Nordtvedt, Tom Ståle; Svendsen, Eirik Starheim (Chapter, 2020)
      Liquified natural gas (LNG) fuelled vessels are increasing in the fishing industry due to its reduced environmental footprint as compared to vessels using heavy hydrocarbon fuels. Cryogenic tanks are used to store LNG on ...

    • Cryogenic Hydrogen Storage Tanks Exposed to Fires: a CFD Study 

      Ustolin, Federico; Scarponi, Giordano E.; Iannaccone, Tommaso; Cozzani, Valerio; Paltrinieri, Nicola (Peer reviewed; Journal article, 2022)
      Hydrogen is one of the most suitable candidates in replacing heavy hydrocarbons. Liquefaction of fuels is one of the most effective processes to increase their low density. This is critical especially in large-scale or ...

    • Cryogenic vs. absorption biogas upgrading in liquefied biomethane production – An energy efficiency analysis 

      Hashemi, Sayed Ebrahim; Sarker, Shiplu; Lien, Kristian Myklebust; Schnell, Sondre Kvalvåg; Austbø, Bjørn (Journal article; Peer reviewed, 2019)
      Production of liquefied biomethane (LBM) from biogas comprises two major energy intensive processes; upgrading to increase the methane concentration and refrigeration to liquefy the upgraded biogas. Amine-based absorption ...

    • Cryptanalysis of a generic one-round key exchange protocol with strong security 

      Yang, Zheng; Lai, Junyu; Li, Guoyuan (Journal article, 2017)
      In Public-Key Cryptography (PKC) 2015, Bergsma et al. introduced an interesting one-round key exchange protocol (which will be referred to as BJS scheme) with strong security in particular for perfect forward secrecy (PFS). ...

    • Cryptanalysis of a Pseudorandom Generator for Cross-Border E-Commerce 

      Shi, Lelai; Liu, Suhui; Petrovic, Slobodan (Journal article; Peer reviewed, 2019)
      In this paper, we study ciphertext-only cryptanalysis of a cascade of pseudorandom sequence generators employing linear feedback shift registers (LFSRs) with so-called irregular clocking. The cascade of LFSRs is a well-known ...

    • Cryptic choice of conspecific sperm controlled by the impact of ovarian fluid on sperm swimming behavior 

      Yeates, SE; Diamond, SE; Einum, Sigurd; Emerson, Brent C.; Holt, WV; Gage, MJG (Journal article; Peer reviewed, 2013)
      Despite evidence that variation in male–female reproductive compatibility exists in many fertilization systems, identifying mechanisms of cryptic female choice at the gamete level has been a challenge. Here, under risks ...

    • Cryptocurrencies and the threat versus the act event of geopolitical risk 

      Kamal, Md Rajib; Wahlstrøm, Ranik Raaen (Peer reviewed; Journal article, 2023)
      We examine the reactions of the cryptocurrency market to two events that occurred during the escalation of the Russia–Ukraine war in February 2022. Using hourly data, we find that the escalation exerted a negative influence ...

    • Cryptographic smooth neighbors 

      Bruno, Giacomo; Corte-Real Santos, Maria; Costello, Craig; Eriksen, Jonathan Komada; Meyer, Michael; Naehrig, Michael; Sterner, Bruno (Peer reviewed; Journal article, 2023)
      We revisit the problem of finding two consecutive B-smooth integers by giving an optimised implementation of the Conrey-Holmstrom-McLaughlin “smooth neighbors” algorithm. While this algorithm is not guaranteed to return ...

    • A Cryptographic Toolbox for Feedback Control Systems 

      Solnør, Petter (Peer reviewed; Journal article, 2020)
      Abstract: Feedback control systems consist of components such as sensory systems, state estimators, controllers, and actuators. By transmitting signals between these components across insecure transmission channels, feedback ...

    • Crystal Orientation of Iron Produced by Electrodeoxidation of Hematite Particles 

      Tokushige, Manabu; Kongstein, Ole Edvard; Haarberg, Geir Martin (Journal article, 2013)
      Electrowinning of iron was conducted in a 50 wt% NaOH-H2O electrolyte with suspended Fe2O3 particles at 110ºC and pure α-Fe films were obtained on a disk cathode with a higher current efficiency than 95%. The Fe2O3 particle ...

    • Crystal Phase Mapping by Scanning Precession Electron Diffraction and Machine Learning Decomposition 

      Ånes, Håkon Wiik; Andersen, Ingrid Marie; Van Helvoort, Antonius (Journal article; Peer reviewed, 2018)
      Analyzing the distribution of crystal phases is required to understand nanostructures. Conventional analysis in the transmission electron microscope (TEM) include acquiring dark-field (DF) images for each expected crystal ...

    • Crystal plasticity finite element simulations of pure bending of aluminium alloy AA7108 

      Saai, Afaf; Westermann, Ida; Dumoulin, Stephane; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2015)
      The crystal plasticity finite element method (CP-FEM) is used to investigate the influence of microstructure on the bending behaviour of the heat treatable aluminium alloy AA7108. The study comprises two materials obtained ...

    • Crystal plasticity modeling of microstructure influence on fatigue crack initiation in extruded Al6082-T6 with surface irregularities 

      Hallberg, Håkan; Ås, Sigmund Kyrre; Skallerud, Bjørn Helge (Journal article, 2018)
      The influence of surface roughness and microstructure heterogeneities in the vicinity of macroscopic stress concentrations are investigated by crystal plasticity simulations. It is shown that in the extruded Al6082-T6 alloy ...

    • Crystal Structure Influences Migration along Li and Mg Surfaces 

      Røe, Ingeborg Treu; Selbach, Sverre Magnus; Schnell, Sondre Kvalvåg (Peer reviewed; Journal article, 2020)
      Dendrite formation on Li metal anodes hinders commercialization of more energy-dense rechargeable batteries. Here, we use the migration energy barrier (MEB) for surface transport as a descriptor for dendrite nucleation and ...

    • Crystal structure, thermal expansion and electrical conductivity of LaCoxNiyMozO3 

      Grande, Tor; Øygarden, Vegar (Journal article; Peer reviewed, 2016)
      The effect of Mo-substitution was investigated for the LaCoxNiyMozO3 system, obtaining single-phase perovskite for Mo-substitutions up to 20 at%. The crystal structure of the perovskite changed from rhombohedral, orthorhombic ...

    • Crystal-plasticity modelling of the yield surfaces and anelasticity in the elastoplastic transition of metals 

      Imani Aria, Arash; Holmedal, Bjørn; Manik, Tomas; Marthinsen, Knut (Journal article; Peer reviewed, 2024)
      The paper presents a full-field crystal-plasticity computational investigation of 10 με small-strain-offset yield surfaces with pointed vertexes that are seen in the elastoplastic transition of pre-strained polycrystal ...

    • Crystalline GaSb-core optical fibers with room-temperature photoluminescence 

      Song, Seunghan; Healy, Noel; Svendsen, Silje; Österberg, Ulf; Cuervo Covian, Alejandra; Liu, Jifeng; Peacock, Anna; Ballato, John; Laurell, Fredrik; Fokine, Michael; Gibson, Ursula (Journal article; Peer reviewed, 2018)
      Glass-clad, GaSb-core fibers were drawn and subsequently laser annealed. The asdrawn fibers were found to be polycrystalline, possess Sb inclusions, and have oxide contamination concentrations of less than 3 at%. Melting ...

    • Crystalline symmetry controlled magnetic switching in epitaxial (111) La0.7Sr0.3MnO3 thin films 

      Hallsteinsen, Ingrid; Folven, Erik; Olsen, Fredrik Kjemperud; Chopdekar, R.V.; Rzchowski, M; Eom, C.B.; Grepstad, Jostein; Tybell, Per Thomas Martin (Journal article; Peer reviewed, 2015)
      Mixed-valence manganite thin films are attractive for spintronic devices. Crystalline orientation is a promising route to tailor switching mechanisms, as magnetization reversal depends on the magnetic anisotropy. Here, ...