Now showing items 71-90 of 297

    • Electromangetic force density in electrically and magnetically polarizable media 

      Liberal Olleta, Íñigo Upna; Ederra Urzainqui, Íñigo Upna; Gonzalo García, Ramón Upna; Ziolkowski, Richard W. (American Physical Society, 2013)   Artículo / Artikulua  OpenAccess
      The force density induced by electromagnetic fields in electrically and magnetically polarizable media is studied analytically. Different formulations of the force density as a function of field-related quantities, ...
    • Electromyographic, cerebral, and muscle hemodynamic responses during intermittent, isometric contractions of the biceps brachii at three submaximal intensities 

      Bhambhani, Yagesh; Fan, Jui Lin; Place, Nicolas; Rodríguez Falces, Javier Upna; Kayser, Bengt (Frontiers Media, 2014)   Artículo / Artikulua  OpenAccess
      This study examined the electromyographic, cerebral and muscle hemodynamic responses during intermittent isometric contractions of biceps brachii at 20, 40, and 60% of maximal voluntary contraction (MVC). Eleven volunteers ...
    • Enabling personal privacy for pervasive computing environments 

      Alcalde Bagüés, Susana Upna; Zeidler, Andreas; Klein, Cornel; Fernández Valdivielso, Carlos Upna; Matías Maestro, Ignacio Upna (Graz University of Technology, IICM, 2010)   Artículo / Artikulua  OpenAccess
      Protection of personal data in the Internet is already a challenge today. Users have to actively look up privacy policies of websites and decide whether they can live with the terms of use. Once discovered, they are ...
    • Energy management strategy for a battery-diesel stand-alone system with distributed PV generation based on grid frequency modulation 

      Urtasun Erburu, Andoni Upna; Sanchis Gúrpide, Pablo Upna; Barricarte Rivas, David; Marroyo Palomo, Luis Upna (Elsevier, 2014)   Artículo / Artikulua  OpenAccess
      A hybrid PV-Battery-Diesel configuration is very attractive for stand-alone systems in terms of cost and reliability. In many applications, the battery and the diesel generator are centralized and generate the AC grid while ...
    • Enhancement of sensitivity in long period fiber gratings with deposition of low refractive index materials 

      Del Villar, Ignacio Upna; Matías Maestro, Ignacio Upna; Arregui San Martín, Francisco Javier Upna (Optical Society of America, 2005)   Artículo / Artikulua  OpenAccess
      It was proved [Opt. Lett. 30, 720 (2005)] that the deposition of an overlay of higher refractive index than that of the cladding on a long-period fiber grating (LPFG) causes large shifts in the attenuation bands induced by ...
    • Enhancement of the dynamic range in slope-assisted coherent brillouin optical time-domain analysis sensors 

      Mariñelarena Ollacarizqueta, Jon Upna; Urricelqui Polvorinos, Javier Upna; Loayssa Lara, Alayn Upna (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      We present two techniques that provide an extension of the dynamic range of coherent Brillouin optical time-domain analysis (BOTDA) sensors for dynamic measurements. This type of BOTDA sensors rely on self-heterodyne ...
    • eOftalmología: estado actual y tendencias futuras 

      Andonegui Navarro, José; Serrano Arriezu, Luis Javier Upna; Eguzkiza Diego, Aitor Upna (Gobierno de Navarra, 2010)   Artículo / Artikulua  OpenAccess
      La eSalud se puede definir como el uso de las tecnologías de la información y las comunicaciones para proporcionar o apoyar un diverso grupo de actividades relacionadas con la atención en salud. Si este concepto se ...
    • Epsilon-near-zero metalenses operating in the visible 

      Pacheco Peña, Víctor Upna; Navarro Cía, Miguel Upna; Beruete Díaz, Miguel Upna (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      Several converging lenses working in the permittivity near to zero (ENZ) regime at optical frequencies are designed using an array of metal-dielectric-metal plasmonic waveguides. These plasmonic waveguides show a dispersive ...
    • ESA-based in-fiber nanocavity for hydrogen–peroxide detection 

      Del Villar, Ignacio Upna; Matías Maestro, Ignacio Upna; Arregui San Martín, Francisco Javier Upna; Claus, Richard O. (IEEE, 2005)   Artículo / Artikulua  OpenAccess
      A fiber-optic sensor sensitive to hydrogen peroxide has been designed based on the electrostatic layer-by-layer selfassembly method. Prussian blue has been deposited in a polymeric structure formed by Poly(allylamine ...
    • Estimation of radiofrequency power leakage from microwave ovens for dosimetric assessment at nonionizing radiation exposure levels 

      López Iturri, Peio Upna; Miguel Bilbao, Silvia de; Aguirre Gallego, Erik Upna; Azpilicueta Fernández de las Heras, Leyre Upna; Falcone Lanas, Francisco Javier Upna; Ramos González, Victoria (Hindawi, 2015)   Artículo / Artikulua  OpenAccess
      The electromagnetic field leakage levels of nonionizing radiation from a microwave oven have been estimated within a complex indoor scenario. By employing a hybrid simulation technique, based on coupling full wave simulation ...
    • Etched LPFGs in reflective configuration for sensitivity and attenuation band depth increase 

      Del Villar, Ignacio Upna; Socorro Leránoz, Abián Bentor Upna; Corres Sanz, Jesús María Upna; Matías Maestro, Ignacio Upna; Cruz, José Luis; Rego, Gaspar (IEEE, 2016)   Artículo / Artikulua  OpenAccess
      A reflection configuration setup for long-period fiber gratings is presented. It permits to obtain a unique band with attenuation double than that obtained in transmission configuration, which is interesting for ...
    • Evaluation of deployment challenges of wireless sensor networks at signalized intersections 

      Azpilicueta Fernández de las Heras, Leyre Upna; López Iturri, Peio Upna; Aguirre Gallego, Erik Upna; Martínez Carrasco, Carlos; Astrain Escola, José Javier Upna; Villadangos Alonso, Jesús Upna; Falcone Lanas, Francisco Javier Upna (MDPI, 2016)   Artículo / Artikulua  OpenAccess
      With the growing demand of Intelligent Transportation Systems (ITS) for safer and more efficient transportation, research on and development of such vehicular communication systems have increased considerably in the last ...
    • Evaluation of electromagnetic dosimetry of wireless systems in complex indoor scenarios with human body interaction 

      Aguirre Gallego, Erik Upna; Arpón Díaz-Aldagalán, Javier; Azpilicueta Fernández de las Heras, Leyre Upna; Ramos González, Victoria; Falcone Lanas, Francisco Javier Upna (EMW Publishing, 2012)   Artículo / Artikulua  OpenAccess
      In this work, the influence of human body within the estimation of dosimetric values is analyzed. A simplified human body model, including the dispersive nature of material parameters of internal organs, skin, muscle, bones ...
    • Evaluation of electromagnetic interference and exposure assessment from s-Health solutions based on Wi-Fi devices 

      Miguel Bilbao, Silvia de; Aguirre Gallego, Erik Upna; Azpilicueta Fernández de las Heras, Leyre Upna; Roldán Madroñero, José; Ramos González, Victoria; Falcone Lanas, Francisco Javier Upna (Hindawi Publishing Corporation, 2015)   Artículo / Artikulua  OpenAccess
      In the last decade the number of wireless devices operating at the frequency band of 2.4GHz has increased in several settings, such as healthcare, occupational, and household. In this work, the emissions fromWi-Fi transceivers ...
    • Evanescently fed electromagnetic band-gap horn antennas and arrays 

      Khromova, Irina Upna; Ederra Urzainqui, Íñigo Upna; Teniente Vallinas, Jorge Upna; Gonzalo García, Ramón Upna; Esselle, Karu P. (IEEE, 2012)   Artículo / Artikulua  OpenAccess
      The design of a horn antenna based on electromagnetic band-gap structures (EBGs) and fed by evanescent fields in the containing periodic structure is presented. Such all-dielectric antennas can form compact arrays and ...
    • Experimental and numerical characterization of a hybrid Fabry-Perot cavity for temperature sensing 

      López Aldaba, Aitor Upna; Rodrigues Pinto, Ana Margarida Upna; López-Amo Sáinz, Manuel Upna; Frazão, Orlando; Santos, José Luís; Baptista, José Manuel; Baierl, Hardy; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe (MDPI, 2015)   Artículo / Artikulua  OpenAccess
      A hybrid Fabry-Pérot cavity sensing head based on a four-bridge microstructured fiber is characterized for temperature sensing. The characterization of this cavity is performed numerically and experimentally in the L-band. ...
    • Experimental demonstration of lossy mode and surface plasmon resonance generation with Kretschmann configuration 

      Del Villar, Ignacio Upna; Torres Landívar, Víctor Upna; Beruete Díaz, Miguel Upna (Optical Society of America, 2015)   Artículo / Artikulua  OpenAccess
      Lossy mode resonances (LMRs) and surface plasmon resonaces (SPRs) are obtained experimentally with a Kretschmann configuration using a BK7 glass prism with all sides polished and coated with indium tin oxide (ITO). The ...
    • Experimental demonstration of metamaterials application for mitigating scan blindness in phased array antennas 

      Rodríguez Ulibarri, Pablo Upna; Crépin, Thomas; Martel, Cédric; Boust, Fabrice; Falcone Lanas, Francisco Javier Upna; Loecker, Claudius; Herbertz, Kai; Bertuch, Thomas; Dousset, Thierry; Martinaud, Jean-Paul; Maci, Stefano; Marcotegui, José Antonio Upna; Beruete Díaz, Miguel Upna (EDP Sciences, 2016)   Artículo / Artikulua  OpenAccess
      This paper presents two metamaterial-inspired solutions to mitigate the scan blindness effects in a phased array antenna. In the first solution, portions of a bed of nails are introduced in the radome to prevent the excitation ...
    • Experimental demonstration of metasurface-based ultrathin carpet cloaks for millimetre waves 

      Orazbayev, Bakhtiyar Upna; Mohammadi Estakhri, Nasim; Alù, Andrea; Beruete Díaz, Miguel Upna (Wiley, 2016)   Artículo / Artikulua  OpenAccess
      A metasurface carpet cloak for millimeter-wave range with polarization-independent performance is experimentally demonstrated. It is shown that the cloak is able to mimic the ground plane by fully restoring the amplitude ...
    • Experimental demonstration of phase resonances in metallic compound gratings with subwavelength slits in the millimeter wave regime 

      Navarro Cía, Miguel Upna; Skigin, Diana C.; Beruete Díaz, Miguel Upna; Sorolla Ayza, Mario Upna (AIP Publishing, 2009)   Artículo / Artikulua  OpenAccess
      We provide experimental evidence of phase resonances in metallic periodic structures in which each period comprises several subwavelength slits of the same width. We have analyzed and measured the response of these ...