Now showing items 1-20 of 47

  • A fractal model to describe the evolution of multiphase flow properties during mineral dissolution 

    Guarracino, Luis; Roetting, Tobias Stefan; Carrera Ramírez, Jesús (Elsevier, 2014-05-01)
    Article
    Restricted access - publisher's policy
    Understanding the changes in multiphase flow parameters caused by mineral dissolution-precipitation is required for multiple applications ranging from geological storage of CO2, enhanced geothermal energy production or ...
  • Análisis cinético y matemático de la tintura de tencel con colorantes directos 

    Lis Arias, Manuel José; Valldeperas Morell, José; Carrillo Navarrete, Fernando; Navarro Viciana, Juan Antonio (2006-07)
    Article
    Open Access
    En un intento de cuantificar el comportamiento tintóreo de la fibra Tencel con colorantes directos, se propone un enfoque por mecanismos que permite realizar un análisis del proceso desde dos puntos de vista: Cinético y ...
  • Analysis of the equations governing the motion of a degrading elastic solid due to diffusion of a fluid 

    Quintanilla de Latorre, Ramón; Rajagopal, Kumbakonam (2014-10)
    Article
    Open Access
    Degradation of solids bearing load due to the infusion of moisture when exposed to the environment can leads to a decrease in their load carrying capacity and can also lead to the failure of the body from performing its ...
  • Analytical approach to sorting in periodic and random potentials 

    Gleeson, James P.; Sancho, Jose Maria; Lacasta Palacio, Ana María; Lindenberg, K. (American Physical Society, 2006-04-17)
    Article
    Open Access
    There has been a recent revolution in the ability to manipulate micrometer-sized objects on surfaces patterned by traps or obstacles of controllable configurations and shapes. One application of this technology is to ...
  • An Integrated Information System to Support Supply Chain Management & Performance in SMEs 

    Budiarto, Dekeng Setyo; Prabowo, Muhammad Agung; Herawan, Tutut (OmniaScience, 2017-05)
    Article
    Open Access
    Purpose: This study aims to examine the relation between the level of supply chain management (SCM) adoption and small & medium enterprises (SMEs) performance. SCM adoption level it is expected to facilitate SMEs in ...
  • A robust comparison of dynamical scenarios in a glass-forming liquid 

    Vispa, Alessandro; Busch, Sebastian; Tamarit Mur, José Luis; Unruh, Tobias; Fernandez-Alonso, Felix; Pardo Soto, Luis Carlos (2016-02-07)
    Article
    Open Access
    We use Bayesian inference methods to provide fresh insights into the sub-nanosecond dynamics of glycerol, a prototypical glass-forming liquid. To this end, quasielastic neutron scattering data as a function of temperature ...
  • Black-Scholes differential equation and its development 

    Duaso Bellido, Mireia (Universitat Politècnica de Catalunya, 2015-07)
    Bachelor thesis
    Restricted access - author's decision
    L'equació de Black-Scholes és una equació en derivades parcials (EDP) de tipus difusió. Aquest model introdueix que els increments de l'actiu subjacent segueixen un moviment Brownià. És un mètode eficient per calcular el ...
  • Càlcul de la difusió intraocular a partir de la MTF per diferents dimensions de la imatge de doble pas 

    Ferrer Borràs, Oriol (Universitat Politècnica de Catalunya, 2014-06-30)
    Bachelor thesis
    Open Access
    Actualment existeix molta recerca pel què fa a l’estudi de la qualitat de la imatge retinal ja que, dels passos que intervenen en la visió, és l’únic de moment que podem millorar. Aquesta qualitat es veu afectada per les ...
  • Chemical and nanoindentation study of diffusion during sintering of 12Ce-ZrO2/3Y-ZrO2 powder layers 

    Roa Rovira, Joan Josep; Turón Viñas, Miquel; Tovar Vargas, Daniela; Ledesma, J.; Anglada Gomila, Marcos Juan (2018-02-01)
    Article
    Restricted access - publisher's policy
    Tetragonal zirconia polycrystals doped with 3% mol of yttria (3Y-ZrO2) exhibit excellent mechanical properties and biocompatibility. However, under humid environments, their surface structural integrity is degraded by aging ...
  • Comment on "Diffusion on solif surfaces: anomalous is normal"-Reply 

    Sancho, Jose Maria; Lacasta Palacio, Ana María; Lindenberg, K.; Sokolov, Igor M.; Romero, A. H. (Americah Physical Society, 2005-05-12)
    Article
    Open Access
  • Comparison of drop evaporation models on hot surface 

    González Esteve, Adrià (Universitat Politècnica de Catalunya / Politecnico di Milano, 2014)
    Bachelor thesis
    Open Access
    Covenantee:  Politecnico di Milano
    This project is a study of how a sessile drop evaporates on a hot surface. Some existing models of droplet evaporation are explained, understood, simulated and compared. This project also provides an expression of drop ...
  • Composition, nanostructure, and optical properties of silver and silver-copper lusters 

    Pradell Cara, Trinitat; Pavlov, R.S.; Gutiérrez Repiso, Carolina; Climent Font, Aurelio; Molera Marimon, Judit (American Institute of Physics (AIP), 2012-09-01)
    Article
    Open Access
    Lusters are composite thin layers of coinage metal nanoparticles in glass displaying peculiar optical properties and obtained by a process involving ionic exchange, diffusion, and crystallization. In particular, the origin ...
  • Controllable coherent backscattering of light in disordered media filled with liquid crystal 

    Trull Silvestre, José Francisco; Cuevas, Marc; Salud Puig, Josep; Cojocaru, Crina; López Pérez, David Orencio (2018-05-09)
    Article
    Open Access
    We have investigated multiple scattering of light in a disordered system based on liquid crystals for a temperature-controllable random laser. Coherent backscattering measurements at several temperatures have been well ...
  • Diffusion on Solid Surface: anomalous is Normal 

    Sancho, Jose Maria; Lacasta Palacio, Ana María; Lindenberg, K.; Sokolov, Igor M.; Romero, A. H. (American Physical Society, 2004-06-23)
    Article
    Open Access
    We present a numerical study of classical particles diffusing on a solid surface. The particles’ motion is modeled by an underdamped Langevin equation with ordinary thermal noise. The particle-surface interaction is described ...
  • Dispersionless transport in a washboard potential 

    Lindenberg, K.; Sancho, Jose Maria; Lacasta Palacio, Ana María; Sokolov, Igor M. (American Physical Society, 2007-01-10)
    Article
    Open Access
    We study and characterize a new dynamical regime of underdamped particles in a tilted washboard potential. We find that for small friction in a finite range of forces the particles move essentially nondispersively, that ...
  • Dynamic versus Anderson wave-packet localization 

    Borovkova, Olga V.; Lobanov, Valery E.; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2015-06-18)
    Article
    Open Access
    We address the interplay between two fundamentally different wave-packet localization mechanisms, namely, resonant dynamic localization due to collapse of quasienergy bands in periodic media and disorder-induced Anderson ...
  • Effective diffusion in a stochastic velocity field 

    Careta i Pons, Agustí; Sagués Mestre, Francesc; Ramírez de la Piscina Millán, Laureano; Sancho, Jose Maria (Springer Verlag, 1993-04-01)
    Article
    Restricted access - publisher's policy
    Analytical results are derived for the effective dispersion of a passive scalar in a stochastic velocity field evolving in a fast time scale. These results are favorably compared with direct computer simulation of ...
  • Electrospun PLLA membranes for caffeine delivery: diffusional approach 

    Immich, Ana Paula; Tornero García, José Antonio; Cano Casas, Francesc; Lis Arias, Manuel José (Springer, 2017-12-29)
    Article
    Open Access
    One of the great advantages of electrospun fibers is the large tridimensional area produced, capable of storing any type of material. The aim of our investigation is to study the electrospinning technique to produce polymer ...
  • Evaporation of a sodium chloride solution from a saturated porous medium with efflorescence formation (salt crystallisation). 

    Rosello Moya, Gerard (Universitat Politècnica de Catalunya, 2016-06-15)
    Bachelor thesis
    Restricted access - author's decision
    Covenantee:  Institut de Mécanique des Fluides de Toulouse
    Evaporation of saline solutions from a porous medium often leads to the precipitation of salt at the surface of the porous medium. It is commonly observed that the crystallized salt does not form everywhere at the porous ...
  • From subdiffusion to superdiffusion of particles on solid surfaces 

    Lacasta Palacio, Ana María; Sancho, Jose Maria; Sokolov, Igor M.; Lindenberg, K. (American Physical Society, 2004-11-15)
    Article
    Open Access
    We present a numerical and partially analytical study of classical particles obeying a Langevin equation that describes diffusion on a surface modeled by a two dimensional potential. The potential may be either periodic ...