Ara es mostren els items 21-40 de 106178

  • NiSn bimetallic nanoparticles as stable electrocatalysts for methanol oxidation reaction 

    Li, Junshan; Luo, Zhishan; Zuo, Yong; Liu, Junfeng; Zhang, Ting; Tang, Pengyi; Arbiol, Jordi; Llorca Piqué, Jordi; Cabot Codina, Andreu (2018-10-15)
    Article
    Accés obert
    Nickel is an excellent alternative catalyst to high cost Pt and Pt-group metals as anode material in direct methanol fuel cells. However, nickel presents a relatively low stability under operation conditions, even in ...
  • Pd/TiO2-WO3 photocatalysts for hydrogen generation from water-methanol mixtures 

    Toledo Camacho, Sandra Yurani; Rey Barroso, Ana; Hernández Alonso, María Dolores; Llorca Piqué, Jordi; Medina Mena, Francisco; Contreras Iglesias, Sandra (2018-10-15)
    Article
    Accés obert
    Solar light is inexhaustible, and therefore to take advantage of this energy it is necessary to develop materials capable of absorbing energy in the widest range of the solar spectra. Although TiO2 is one of the most studied ...
  • Dynamic modelling and control schemes for current-source resonant converters 

    Ghahderijani, Mohammad Moradi (Universitat Politècnica de Catalunya, 2018-10-09)
    Tesi
    Accés obert
    This thesis focuses on the control methods applied to current source resonant converters, especially in two different applications of switching power supplies and wire-less power transfer systems. In fact, the existing ...
  • Environmental and cost optimal design of a biomass–Wind–PV electricity generation system 

    González Juncà, Arnau; Riba Ruiz, Jordi-Roger; Esteban Dalmau, Bernat; Rius Carrasco, Antoni (2018-10-01)
    Article
    Accés restringit per política de l'editorial
    This work describes a methodology to optimize a grid-connected hybrid renewable energy system (HRES) that hybridizes photovoltaic, wind and forest biomass energy sources taking into account cost and environmental impact ...
  • On the static strength of aluminium and carbon fibre aircraft lap joint repairs 

    Pitta, Siddharth; de la Mora Carles, Victor; Roure Fernández, Francisco; Crespo Artiaga, Daniel; Rojas Gregorio, José Ignacio (2018-10-01)
    Article
    Accés restringit per política de l'editorial
    The behaviour of various aircraft lap joint repair configurations is investigated experimentally and numerically under static loading. The lap joints consist of aluminium alloy (AA) 2024-T3 substrates repaired with twin ...
  • Treatment of saline produced water through photocatalysis using rGO-TiO 2 nanocomposites 

    Andreozzi, Mario; Alvarez, Mayra G.; Contreras Iglesias, Sandra; Medina Cabello, Francesc; Clarizia, Laura; Vitiello, Giuseppe; Llorca Piqué, Jordi; Marotta, Raffaele (2018-10-01)
    Article
    Accés obert
    Graphene like-TiO2 nanocomposites (rGO-TiO2) are prepared via hydrothermal route by following different synthetic protocols. The as-prepared nanostructured materials exhibit higher photocatalytic activity than bare TiO2 ...
  • Towards a proper service placement in combined Fog-to-Cloud (F2C) architectures 

    Barbosa Souza, Víctor; Masip Bruin, Xavier; Marín Tordera, Eva; Sánchez López, Sergio; García Almiñana, Jordi (Elsevier, 2018-10-01)
    Article
    Accés obert
    The Internet of Things (IoT) has empowered the development of a plethora of new services, fueled by the deployment of devices located at the edge, providing multiple capabilities in terms of connectivity as well as in data ...
  • Potential of tungsten tailings as glass raw materials 

    Alfonso Abella, María Pura; Tomasa Guix, Oriol; García-Vallès, Maite; Tarragó Aymerich, Mariona; Martínez Manent, Salvador (2018-10-01)
    Article
    Accés restringit per política de l'editorial
    Glasses from different types of tungsten mine tailings were obtained and studied to determine their ability to be used as raw materials of commercial glass. Tailings of granitic composition from Barruecopardo, of calc-silicate ...
  • An efficient iterative method for computing deflections of Bernoulli–Euler–von Karman beams on a nonlinear elastic foundation 

    Ahmad, Fayyaz; Jang, Taek Soo; Carrasco, Juan A.; Shafiq Ur, Rehman; Ali, Zulfiqar; Ali, Nukhaze (2018-10-01)
    Article
    Accés restringit per política de l'editorial
    An efficient iterative method is developed for the static analysis of large deflections of an infinite beam with variable cross-section resting on a nonlinear foundation. A pseudo spring constant is added and explicit ...
  • Traceable sea water temperature measurements performed by optical fibers 

    García Izquierdo, Carmen; Garcia Benadí, Albert; Corredera, Pedro; Río Fernandez, Joaquín del; Nogueras Cervera, Marc (2018-10-01)
    Article
    Accés obert
    This paper describes a technique to perform traceable temperature measurements of the seawater column andseawater surface, based on optical ¿ber Bragg gratings. The paper explains the di¿erent phases of the work done:design ...
  • Optimal operation of hybrid high voltage direct current and alternating current networks based on OPF combined with droop voltage control 

    Aragüés Peñalba, Mònica; Sau Bassols, Joan; Galceran Arellano, Samuel; Sumper, Andreas; Gomis Bellmunt, Oriol (2018-10)
    Article
    Accés restringit per política de l'editorial
    This study focuses on the operation and control of HVDC multi-terminal systems that transmit the power being generated in offshore wind farms to the terrestrial AC grids. The aim of the paper is to propose and validate an ...
  • Middle Triassic evaporite sedimentation in the Catalan basin: implications for the paleogeographic evolution in the NE Iberian platform 

    Ortí, Federico; Salvany Duran, Josep Maria; Rosell, Laura; Castelltort, Xavier; Inglès, Montserrat; Playà, Elisabet (2018-10)
    Article
    Accés restringit per política de l'editorial
    The eastern sector of the epicontinental Iberian platform underwent restriction after the sedimentation of the lower Muschelkalk carbonates (Middle Triassic) under extensional regime. This resulted in the accumulation of ...
  • Innovative solutions for intersection of TBM tunnel and station in Riyadh Line 5 metro 

    Ramos Schneider, Gonzalo; García Molina, Ángel; Torralba Mendiola, Víctor; Ainchil Lavín, Javier Pablo (Elsevier, 2018-10)
    Article
    Accés restringit per política de l'editorial
    One of the main problems when constructing a metro line using a tunnel boring machine (TBM) is the coordination of the construction of the tunnel with the excavation of the stations that it will intersect, being possible ...
  • A variational model of fracture for tearing brittle thin sheets 

    Li, Bin; Millán Zurita, Daniel; Torres Sánchez, Alejandro; Arroyo Balaguer, Marino (2018-10)
    Article
    Accés restringit per política de l'editorial
    Tearing of brittle thin elastic sheets, possibly adhered to a substrate, involves a rich interplay between nonlinear elasticity, geometry, adhesion, and fracture mechanics. In addition to its intrinsic and practical interest, ...
  • A resilient and distributed near real-time traffic forecasting application for Fog computing environments 

    Pérez, Juan L.; Gutierrez-Torre, Alberto; Berral, Josep Ll.; Carrera, David (Elsevier, 2018-10)
    Article
    Accés obert
    In this paper we propose an architecture for a city-wide traffic modeling and prediction service based on the Fog Computing paradigm. The work assumes an scenario in which a number of distributed antennas receive data ...
  • Automated curation of brand-related social media images with deep learning 

    Tous Liesa, Rubén; Gómez Parada, Mauro; Poveda, Jonatan; Cruz, Leonel; Wust, Otto; Makni, Mouna; Ayguadé Parra, Eduard (2018-10)
    Article
    Accés restringit per política de l'editorial
    This paper presents a work consisting in using deep convolutional neural networks (CNNs) to facilitate the curation of brand-related social media images. The final goal is to facilitate searching and discovering user-generated ...
  • Methodologies and tools of risk management: Hurricane Risk index (HRi) 

    Hernández Aguilar, Maria Luisa; Carreño Tibaduiza, Martha Liliana; Castillo Villanueva, Lourdes (Elsevier, 2018-10)
    Article
    Accés restringit per política de l'editorial
    Mexico is recognized worldwide for the extension of its coastlines and its tourist exploitation. Quintana Roo is one of the Mexican states, which has a shoreline of approximately 800 km, known as the Mexican Caribbean. The ...
  • Safety factor calibration for a new model of shear strength of reinforced concrete building beams and slabs 

    Bairán García, Jesús Miguel; Casas Rius, Joan Ramon (2018-10)
    Article
    Accés restringit per política de l'editorial
    When assessing existing structures, the availability of adequate safety factors, calibrated with the most accurate models, and for established target reliability indexes, is of critical importance in order to take the right ...
  • Understanding memory access patterns using the BSC performance tools 

    Servat, Harald; Labarta, Jesús; Hoppe, Hans-Christian; Giménez, Judit; Peña, Antonio J. (Elsevier, 2018-10)
    Article
    Accés restringit per política de l'editorial
    The growing gap between processor and memory speeds has lead to complex memory hierarchies as processors evolve to mitigate such divergence by exploiting the locality of reference. In this direction, the BSC performance ...
  • Numerical investigation of non-linear equivalent-frame models for regular masonry walls 

    Siano, Rossella; Roca Fabregat, Pedro; Camata, Guido; Pelà, Luca; Sepe, Vincenzo; Spacone, Enrico; Petracca, Massimo (2018-10)
    Article
    Accés restringit per política de l'editorial
    The accuracy of the Equivalent Frame Method (EFM) in modelling the seismic non-linear behaviour of unreinforced masonry (URM) buildings is investigated for regular walls (i.e. walls with regular openings’ distribution) ...