Envíos recientes

  • Net thermoelectric power generation improvement through heat transfer optimization 

    Aranguren Garacochea, Patricia; Astrain Ulibarrena, David; Rodríguez García, Antonio; Martínez Echeverri, Álvaro (Elsevier, 2017)   Artículo / Artikulua
    Thermoelectric generation contributes to obtain a more sustainable energetic system giving its potential to harvest waste heat and convert it into electric power. In the present study a computational optimal net generation ...
  • Thermoelectric generators for waste heat harvesting: a computational and experimental approach 

    Aranguren Garacochea, Patricia; Araiz Vega, Miguel; Astrain Ulibarrena, David; Martínez Echeverri, Álvaro (Elsevier, 2017)   Artículo / Artikulua
    Waste heat generation has a widespread presence into daily applications, however, due to the low-temperature grade which presents, its exploitation with the most common technologies is complicated. Thermoelectricity ...
  • Electroinductive waves in chain of complementary metamaterial elements 

    Beruete Díaz, Miguel; Falcone Lanas, Francisco Javier; Freire, M.J.; Marqués, R.; Baena, J.D. (AIP Publishing, 2006)   Artículo / Artikulua
    Electronductive waves supported by chains of resonators drilled on a metallic plate are presented. Propagation of energy comes as a consequence of the electric coupling between these resonators. Therefore, these waves ...
  • On the performance of the zoned fishnet metamaterial lens with positive and negative reference phase 

    Pacheco Peña, Víctor; Minin, Igor; Minin, Oleg; Beruete Díaz, Miguel (IEEE, 2016)   Artículo / Artikulua
    In this letter, several converging fishnet metalenses are designed using both the zoning and reference phase techniques. They are engineered with a focal length of 1.5λ0 at the design frequency of 55 GHz (λ0 = 5.45 mm) at ...
  • High aperture efficiency wide corrugations bull’s-eye antenna working at 60 GHz 

    Beaskoetxea Gartzia, Unai; Beruete Díaz, Miguel (IEEE, 2017)   Artículo / Artikulua
    A full metallic Bull’s-Eye (BE) antenna operating at 60 GHz is numerically and experimentally analyzed. The antenna presents wide grooves, rather than narrow ones, which support higher order resonances that lead to a large ...
  • Review on electromagnetic band gap technology and applications 

    Maagt, Peter de; Gonzalo García, Ramón; Vardaxoglou, J. (URSI, 2004)   Artículo / Artikulua
    This paper reviews the primary application areas of Electromagnetic BandGap (EBG) technology at microwave and (sub)millimetre wave frequencies. Examples of EBG configurations in the microwave region are shown and include ...
  • Private sales clubs: a 21st century distribution channel 

    Betancourt, Roger R.; Cortiñas Ugalde, Mónica; Chocarro Eguaras, Raquel; Elorz Domezain, Margarita; Múgica Grijalba, José Miguel (Elsevier, 2017)   Artículo / Artikulua
    Private sales clubs are a novel service institution arising out of the Internet’s ability to allow an exclusively online channel to distribute out of season or out of fashion inventories to a large set of customers. They ...
  • Project management in development cooperation. Non-governmental organizations 

    Montes Guerra, Maricela I.; Romero de Miguel, Aida; Pérez Ezcurdia, Amaya; Gimena Ramos, Faustino; Díez Silva, H. Mauricio (Universidad Nacional de Colombia, 2015)   Artículo / Artikulua
    Este artículo analiza la adopción de prácticas propias de la gestión de proyectos en las ONG destinadas a la cooperación para el desarrollo, así como su influencia en la ejecución y el impacto de la aplicación de metodologías, ...
  • Nonbianisotropic complementary split ring resonators as angular selective metasurfaces 

    Rodríguez Ulibarri, Pablo; Beruete Díaz, Miguel (2017)   Artículo / Artikulua
    In this work, a metasurface with unconventional angular performance and composed by a nonbianisotropic complementary split ring resonator (NB-CSRR) is analyzed numerically and experimentally. A numerical study comparing ...
  • A stopband filter design using a 1-D non-periodic defected ground structure 

    Garde Irigoyen, Ieltxu Aitor; Río Bocio, Carlos del (Wiley, 2003)   Artículo / Artikulua
    The one-dimensional (1-D) defected ground structure is used to control the cutoff frequency characteristic. In this paper three non-periodic filters are built, in order to show the versatility of the DGS. Five unit cells ...
  • Simple modelling of DGS to design 1D-PBG low-pass filters 

    Garde Irigoyen, Ieltxu Aitor; Yábar, Miguel Javier; Río Bocio, Carlos del (Wiley, 2003)   Artículo / Artikulua
    The use of defected ground structures (DGS) is being intensively explored by the microwave filter designer community. The DGSs are one possible implementation of a 1D Photonic Band Gap (1D-PBG) where some defect structures ...
  • Ultra-wide band corrugated profiled horn antenna design 

    Teniente Vallinas, Jorge; Gonzalo García, Ramón; Río Bocio, Carlos del (IEEE, 2002)   Artículo / Artikulua
    Nowadays, an increasing number of applications need stable radiation patterns with low sidelobes and low crosspolar levels in a very wide bandwidth. Gaussian Profiled Horn Antennas (GPHA’s) have demonstrated its feasibility ...
  • Response of complementary split ring resonators in composite stratified substrate integrated waveguide 

    Pérez Escudero, José Manuel; Jarauta Ayensa, Eduardo; Falcone Lanas, Francisco Javier; Beruete Díaz, Miguel (American Institute of Physics, 2017)   Artículo / Artikulua
    In this work, the behavior of a Complementary Split Ring Resonator (CSRR) operating within the quasi-static resonance regime and embedded in a composite stratified Substrate Integrated Waveguide (SIW) with two different ...
  • Cyclic coding for Brillouin optical time-domain analyzers using probe dithering 

    Iribas Pardo, Haritz; Loayssa Lara, Alayn; Sauser, Florian; Llera, Miguel; Le Floch, Sébastien (Optical Society of America, 2017)   Artículo / Artikulua
    We study the performance limits of mono-color cyclic coding applied to Brillouin optical time-domain analysis (BOTDA) sensors that use probe wave dithering. BOTDA analyzers with dithering of the probe use a dual-probe-sideband ...
  • Meat waste as feedstock for home composting: effects on the process and quality of compost 

    Storino, Francesco; Sánchez Arizmendiarreta, Joseba; Irigoyen Iriarte, Ignacio; Muro Erreguerena, Julio; Aparicio Tejo, Pedro María (Elsevier, 2016)   Artículo / Artikulua
    Home composting is a powerful tool, which is spreading in different parts of the world, to reduce the generation of municipal waste. However, there is debate concerning the appropriateness, in terms of domestic hygiene and ...
  • Integració d’un galliner i un compostador pel tractament de la fracció orgànica dels residus municipals (FORM): sis mesos d’experiència de l’AviCompo a Noain (Navarra) 

    Irigoyen Iriarte, Ignacio; Storino, Francesco; Zalba, Raquel; Morales, David; Plana, Ramón (Institució Catalana d´Estudis Agraris (ICEA), 2014)   Artículo / Artikulua
    Este estudio presenta un nuevo sistema descentralizado de tratamiento de residuos orgánicos municipales (FORM): el Avi-Compo. El Avi-Compo es una reducida instalación, que incluye un pequeño gallinero y dos compostador ...
  • Impairment of carbon metabolism induced by the herbicide glyphosate 

    Orcaray Echeverría, Luis; Zulet González, Amaia; Zabalza Aznárez, Ana; Royuela Hernando, Mercedes (Elsevier, 2012)   Artículo / Artikulua
    The herbicide glyphosate reduces plant growth and causes plant death by inhibiting the biosynthesis of aromatic amino acids. The objective of this work was to determine whether glyphosate-treated plants show a carbon ...
  • Branched-chain amino acid biosynthesis inhibitors: herbicide efficacy is associated with an induced carbon–nitrogen imbalance 

    Zabalza Aznárez, Ana; Zulet González, Amaia; Igal Díaz de Cerio, María; Gil Monreal, Miriam; Royuela Hernando, Mercedes (Elsevier, 2013)   Artículo / Artikulua
    Acetolactate synthase (ALS; EC 4.1.3.18) and ketol-acid reductoisomerase (KARI; EC 1.1.1.86) are two consecutive enzymes in the biosynthesis of branched-chain amino acids. Several commercial herbicides inhibit ALS as their ...
  • Proteolytic pathways induced by herbicides that inhibit amino acid biosynthesis 

    Zulet González, Amaia; Gil Monreal, Miriam; Villamor, Joji Grace; Zabalza Aznárez, Ana; Hoorn, Renier A.L. van der; Royuela Hernando, Mercedes (Public Library of Science, 2013)   Artículo / Artikulua
    Background: The herbicides glyphosate (Gly) and imazamox (Imx) inhibit the biosynthesis of aromatic and branched-chain amino acids, respectively. Although these herbicides inhibit different pathways, they have been reported ...
  • Phytotoxic and metabolic effects of exogenous quinate on Pisum sativum L. 

    Zulet González, Amaia; Zabalza Aznárez, Ana; Royuela Hernando, Mercedes (Springer US, 2013)   Artículo / Artikulua
    Quinate (1,3,4,5-tetrahydroxycyclohexanecarboxylate) is a compound synthesized in plants through a side branch of the shikimate biosynthesis pathway. Plants treated with herbicides that inhibit amino acid biosynthesis ...

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