Now showing items 1-12 of 934

  • Synthetic open cell foams versus a healthy human vertebra: Anisotropy, fluid flow and µ-CT structural studies 

    Gómez González, Sergio; Valera Jimenez, Jose Fernando; Cabestany Bastida, Gerard; Vlad, María Daniela; López López, José; Fernández Aguado, Enrique (Elsevier, 2020-03-11)
    Article
    Restricted access - publisher's policy
    Commercial synthetic open-cell foams are an alternative to human cadaveric bone to simulate in vitro different scenarios of bone infiltration properties. Unfortunately, these artificial foams do not reproduce the anisotropic ...
  • Experimental characterization of the speckle pattern at the output of a multimode optical fiber 

    Halpaap, Donatus; Tiana Alsina, Jordi; Vilaseca Ricart, Meritxell; Masoller Alonso, Cristina (2019-09-30)
    Article
    Open Access
    Speckle patterns produced by coherent waves interfering with each other are undesirable in many imaging applications (for example, in laser projection systems) but on the other hand, they contain useful information that ...
  • Quantification of the uncertainty of the physical models in the system thermal-hydraulic codes – PREMIUM benchmark 

    Skorek, Tomasz; de Crécy, Agnès; Kovtonyuk, Andriy; de Alfonso, Elsa; Reventós Puigjaner, Francesc Josep; Freixa Terradas, Jordi (2019-08-10)
    Article
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    PREMIUM (Post BEMUSE Reflood Models Input Uncertainty Methods) was an activity launched with the aim of pushing forward the methods of quantification of physical model uncertainties in thermal-hydraulic codes. The benchmark ...
  • The binary millisecond pulsar PSR J1023+0038-II. Optical spectroscopy 

    Shahbaz, T.; Linares Alegret, Manuel; Rodríguez Gil, Pablo; Casares, Jorge (Oxford University Press, 2019-09-01)
    Article
    Open Access
    We present time-resolved optical spectroscopy of the ‘redback’ binary millisecond pulsar system PSR¿J1023+0038 during both its radio pulsar (2009) and accretion disc states (2014 and 2016). We provide observational evidence ...
  • Crust cooling of the neutron star in Aql X-1: different depth and magnitude of shallow heating during similar accretion outbursts 

    Degenaar, Nathalie; Ootes, Laura; Page, Dany; Wijnands, Rudy; Parikh, Aastha S.; Homan, Jeroen; Cackett, Edward; Miller, Jon M.; Altamirano, Diego; Linares Alegret, Manuel (Oxford University Press, 2019-10-01)
    Article
    Open Access
    The structure and composition of the crust of neutron stars plays an important role in their thermal and magnetic evolution, hence in setting their observational properties. One way to study the properties of the crust of ...
  • Extensional and torsional pipe flow 

    Marqués Truyol, Francisco; Meseguer Serrano, Álvaro (2019-10-31)
    Article
    Open Access
    We study the dynamics of a viscous fluid confined within an elastic pipe that is being stretched and twisted in the axial and azimuthal directions, respectively. A comprehensive numerical exploration of self-similar flows ...
  • Saturn atmospheric dynamics one year after Cassini: Long-lived features and time variations in the drift of the Hexagon 

    Hueso, Ricardo; Sánchez Lavega, Agustín; Rojas, Jose Félix; Simon, Amy A.; Barry, Trevor; del Rio Gaztelurrutia, Teresa; Antuñano, Arrate; Sayanagi, Kunio; Delcroix, M.; Fletcher, Leigh N.; García Melendo, Enrique José; Pérez Hoyos, Santiago; Blalock, J; Colas, Françoise; Gómez Forrellad, Josep Maria; Gunnarson, J. L.; Peach, D.; Wong, Michael (2020-01-15)
    Article
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    We examine Saturn's atmospheric dynamics with observations in the visible range from ground-based telescopes and Hubble Space Telescope (HST). We present a detailed analysis of observations acquired during 2018 obtaining ...
  • A complex storm system in Saturn's north polar atmosphere in 2018 

    Sánchez Lavega, Agustín; García Melendo, Enrique José; Legarreta, Jon J.; Hueso, Ricardo; del Rio Gaztelurrutia, Teresa; Sanz-Requena, Jose Francisco; Pérez Hoyos, Santiago; Simon, Amy A.; Wong, Michael; Soria Guerrero, Manel; Gómez Forrellad, Josep Maria; Barry, Trevor; Delcroix, Marc; Sayanagi, Kunio; Blalock, J; Gunnarson, J. L.; Dyudina, Uliana; Ewald, S. (Springer Nature, 2019-10-21)
    Article
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    Saturn’s convective storms usually fall in two categories. One consists of mid-sized storms ~2,000¿km wide, appearing as irregular bright cloud systems that evolve rapidly, on scales of a few days. The other includes the ...
  • Aeroelastic analysis of parachute deceleration systems with empirical aerodynamics 

    Ortega, Enrique; Flores Le Roux, Roberto Maurice (2019-11-13)
    Article
    Open Access
    A technique for the aeroelastic solution of parachute decelerators is presented in this work. The methodology uses empirical aerodynamics, based on a filling-time inflation model and Ludtke's area law, coupled to two ...
  • Binding and dynamics of melatonin at the interface of phosphatidylcholine-cholesterol membranes 

    Huixia, Lu; Martí Rabassa, Jordi (Public Library of Science (PLOS), 2019-11-07)
    Article
    Open Access
    The characterization of interactions between melatonin, one main ingredient of medicines regulating sleeping rhythms, and basic components of cellular plasma membranes (phospholipids, cholesterol, metal ions and water) ...
  • Independent learning as class preparation to foster student-centred learning in first-year engineering students 

    Pejuan Alcobé, Arcadi; Antonijuan Rull, Josefina (2019-11-08)
    Article
    Open Access
    In first-year engineering students, a common teacher-centred, passive learning and deficient secondary educational backgrounds are often observed. However, there is a problematic difference whether the individual background ...
  • Advanced methodology for wind resource assessment near hydroelectric dams in complex mountainous areas 

    Yang, Lin; Rojas Gregorio, José Ignacio; Villardi de Montlaur, Adeline de (2019-11-05)
    Article
    Restricted access - publisher's policy
    To increase renewable energy generation in some hydroelectric dams, a solution consisting in installing wind turbines close to dams is proposed. Indeed, dam surroundings are prone to benefit from wind speed-up effect, extra ...