Now showing items 1-20 of 38

  • Análisis de antenas parabólicas 

    Jofre Roca, Lluís; Cardama Aznar, Ángel (1981)
    Conference report
    Open Access
    This paper describes a set of procedures for computing secondary patterns of parabolic-reflector antennas. Once the primary feed radiation pattern is defined, aperture-plane fields are computed for a grid of points using ...
  • Analysis of the geometric and radiative characteristics of hydrocarbon pool-fires 

    Planas Cuchi, Eulàlia; Casal Fàbrega, Joaquim; Arnaldos Viger, Josep; Muñoz, Miguel Ángel (2004-08-01)
    Article
    Restricted access - publisher's policy
    The radiation intensity at a given distance depends mainly on the radiative power and the flame’s size and shape. Considerable literature describing both experimental and theoretical studies of thermal radiation from ...
  • Comparison of empirical interatomic potentials for iron applied to radiation damage studies 

    Becquart, C.S.; Willaime, F.; Terentyev, Dimitry; Serra Tort, Ana María; Nordlund, K.; Malerba, L.; Marinica, M.C.; Anento Moreno, Napoleón; Björkas, C.; Nguyen, H.; Domain, C.; Djurabekova, F.; Olsson, P. (2010)
    Article
    Restricted access - publisher's policy
    The performance of four recent semi-empirical interatomic potentials for iron, developed or used within the FP6 Perfect Project, is evaluated by comparing them between themselves and with available experimental or, more ...
  • Conductive plate to improve the protection of the building’s occupants from radiation and environmental electromagnetic fields 

    Franco González, Fidel (2017)
    Conference lecture
    Restricted access - publisher's policy
    The current buildings have problems that affect the health of the occupants. Inside there are electromagnetic fields produced by the network cabling, microwave fields of the WI-FI, fields produced by terrestrial storms, ...
  • Configuration factors for ground level fireballs with shadowing 

    Vílchez, Juan Antonio; Muñoz, Miguel; Bonilla, Juan M.; Planas Cuchi, Eulàlia (2018-01-01)
    Article
    Open Access
    This paper presents new configuration factors for a fireball located at ground level, as radiation emitting source, and a differential receiver, considering the shadow effect of a third finite area that stands between them. ...
  • Correction of spatial errors in SMOS brightness temperature images 

    Wu, Lin; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Martín-Neira, Manuel (IEEE, 2011)
    Conference report
    Restricted access - publisher's policy
    Systematic spatial errors in SMOS brightness temperature images are successfully estimated by using a statistical analysis of measured data. A constant multiplicative mask is derived by averaging spatial errors of a large ...
  • Cylindrical geometry: a further step in active microwave tomography 

    Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel; Elias Fusté, Antoni; Rius Casals, Juan Manuel; Romeu Robert, Jordi (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1991-05-01)
    Article
    Open Access
    A prototype imaging system for active microwave tomography using cylindrical geometry has been developed, making it possible to obtain images of the dielectric properties of biological targets at 2.45 GHz. This configuration ...
  • Determination of the Total Annual Dose emitted by an irradiated target in ISIS synchrotron. 

    Sabio Ruiz, Daniel (Universitat Politècnica de Catalunya, 2017-06-15)
    Master thesis
    Open Access
    Thisworkcontainstheprocessfollowedtounderstandandsimulatehowaspeci csetofmaterials areactivated.Themainissueconsistsinhowtoshieldthesekindofmaterialstoensurethat anyonewillbeexposedtoharmfulradiation. Forthisspeci ...
  • Diseño optimizado de agrupaciones de antenas planas 

    Clavera, Jordi; Jiménez, Jesús; Romeu Robert, Jordi; Blanch Boris, Sebastián; Jofre Roca, Lluís (Unión Científica Internacional de Radio (URSI), 1990)
    Conference report
    Open Access
  • DPM as a radiation transport engine for PRIMO 

    Rodríguez, Miguel; Sempau Roma, Josep; Bäumer, Christian (Springer (Biomed Central Ltd.), 2018-12-27)
    Article
    Open Access
    Background PRIMO is a dose verification system based on the general-purpose Monte Carlo radiation transport code penelope, which implements an accurate physics model of the interaction cross sections and the radiation ...
  • Gap soliton in a waveguide array with a saturating defocusing nonlinearity 

    Gaizzuskas, E; Savickas, A.; Staliunas, Kestutis (2014-03-01)
    Article
    Restricted access - publisher's policy
    We investigate radiation of the solitary waves in the first band gap of the waveguide array with a defocusing nonlinearities of different types (Kerr nonlinearity and saturating nonlinearity). We confirm recent findings ...
  • Interferometric radiometry measurement concept: The visibility equation 

    Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Martín-Neira, Manuel (IEEE, 2011)
    Conference report
    Restricted access - publisher's policy
    The fundamental concept of interferometric aperture synthesis microwave radiometry for Earth observation is reviewed. The measurement principles and a discussion on the signal processing techniques for image reconstruction ...
  • Inter-islands optical link tests 

    Comerón Tejero, Adolfo; Bará Temes, Francisco Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1990-05-01)
    Article
    Open Access
    Free-space optical communication systems between satellites and also between a satellite and a ground station foreseen in Europe in the mid-1990's require far-field on-ground experimentation prior to launch. To identify ...
  • La carta de Smith (Radiació i Ones Guiades) 

    Fabregas Canovas, Francisco Javier; Torres Torres, Francisco; Miranda Mendoza, Carlos (2013-09-27)
    External research report
    Open Access
  • La gran lluita contra el mar (història del cable trasatlàntic) 

    Fabregas Canovas, Francisco Javier; Torres Torres, Francisco; Romeu Robert, Jordi (2014-02-12)
    External research report
    Open Access
  • Modelling of alcohol detection using THz continuous wave ATR spectroscopy 

    Arazo Sánchez, Eric (Universitat Politècnica de Catalunya, 2015-06)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  Tallinna Tehnikaülikool
    The main objective of this work is the modelling of an attenuated total reflectance (ATR) cell for the detection of alcohols using terahertz (THz) spectroscopic techniques. As a first step, a model to simulate an ATR cell ...
  • Monte Carlo simulation of the total dose distribution around the 12 MeV UPC race-track microtron and radiation shielding calculations 

    De la Fuente, Cristina; Duch Guillen, María Amor; Koubychine Merkulov, Youri Alexandrovich; Shvedunov, V.I. (2012)
    Conference lecture
    Open Access
    The Technical University of Catalonia is building a miniature 12 MeV electron race-track microtron for medical applications. In the paper we study the leakage radiation caused by beam losses inside the accelerator head, ...
  • PENELOPE-2008: A Code System for Monte Carlo Simulation of Electron and Photon Transport 

    Salvat, Francesc; Fernández-Varea, Jose Maria; Sempau Roma, Josep (2009)
    Working paper
    Open Access
    The computer code system PENELOPE (version 2008) performs Monte Carlo simulation of coupled electron-photon transport in arbitrary materials for a wide energy range, from a few hundred eV to about 1 GeV. Photon transport ...
  • Protección de los astronautas frente a la radiación en un viaje a Marte 

    Vaquero Moya, Blas; Blanco Priu, Neus (Universitat Politècnica de Catalunya, 2013-06-11)
    Bachelor thesis
    Open Access
    The main goal of this project has been to explore and analyze different combinations of materials that could be used in the design of a radiation shield to protect the crew in an eventual travel to Mars. In order to ...
  • Quantitative images of large biological bodies in microwave tomography by using numerical and real data 

    Mallorquí Franquet, Jordi Joan; Joachimowicz, N.; Broquetas Ibars, Antoni; Bolomey, J. C. (Jean-Charles) (IEE-INST ELEC ENG, 1996-11-01)
    Article
    Open Access
    A new inverse microwave imaging algorithm is presented which has the ability to obtain quantitative dielectric maps of large biological bodies. By using a priori information, obtained with a first order algorithm, the final ...