• People exposed to traffic noise in european agglomerations from noise maps: a critical review 

      Arana Burgui, Miguel Upna Orcid; San Martín Murugarren, Ricardo Upna Orcid; Salinas Hilburg, Juan Carlos Upna (De Gruyter, 2014)   Artículo / Artikulua  OpenAccess
      Two of the main objectives of the European Directive on environmental noise are, firstly, to unify acoustic indices for assessing environmental noise and, secondly, to standardize assessment methodologies. The ultimate ...
    • Simple fabrication of ultrahigh aspect ratio nanostructures for enhanced antireflectivity 

      Domínguez Fernández, Sagrario; Cornago Santos, Ignacio; Bravo Larrea, Javier Upna Orcid; Pérez Conde, Jesús Upna Orcid; Choi, Hyungryul J.; Kim, Jeong-Gil; Barbastathis, George (American Vacuum Society, 2014)   Artículo / Artikulua  OpenAccess
      In this work, the authors present a novel fabrication process to create periodic nanostructures with aspect ratio as high as 9.6. These nanostructures reduce spectral reflectance of silicon to less than 4% over the broad ...
    • Strategic noise map of a major road carried out with two environmental prediction software packages 

      Arana Burgui, Miguel Upna Orcid; San Martín Murugarren, Ricardo Upna Orcid; San Martín Erviti, María Luisa Upna; Aramendía Santamaría, Emilio Upna (Springer Netherlands, 2010)   Artículo / Artikulua  OpenAccess
      The main objective of this study is to analyze the differences found in the results of noise mapping using two of the most popular software techniques for the prediction of environmental noise. The location selected ...
    • Strong angular dependence of resonant states in 2D dielectric cylinder rings 

      Andueza Unanua, Ángel María Upna Orcid; Pérez Conde, Jesús Upna Orcid; Sevilla Moróder, Joaquín Upna Orcid (AIP Publishing, 2018)   Artículo / Artikulua  OpenAccess
      We investigate collective resonators made of dielectric cylinders assembled as two-dimensional regular octagons and decagons. These structures exhibit collective resonance states that change their intensity with the incident ...
    • Structurally oriented nano-sheets in Co thin films: changing their anisotropic physical properties by thermally-induced relaxation 

      Vergara Platero, José Upna Orcid; Favieres Ruiz, Cristina Upna Orcid; Magén, César; Teresa, José María de; Ibarra, Manuel Ricardo; Madurga Pérez, Vicente Upna Orcid (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      We show how nanocrystalline Co films formed by separated oblique nano-sheets display anisotropy in their resistivity, magnetization process, surface nano-morphology and optical transmission. After performing a heat treatment ...
    • Study of optical fiber sensors for cryogenic temperature measurements 

      Miguel Soto, Verónica de Upna Orcid; Leandro González, Daniel Upna Orcid; López Aldaba, Aitor Upna; Beato López, Juan Jesús Upna Orcid; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel Upna Orcid (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      In this work, the performance of five different fiber optic sensors at cryogenic temperatures has been analyzed. A photonic crystal fiber Fabry-Pérot interferometer, two Sagnac interferometers, a commercial fiber Bragg ...
    • Study of the martensitic transition in Ni-Mn-Sn-Ti ferromagnetic shape memory alloys 

      Bonifacich, Federico Guillermo; Lambri, Osvaldo Agustín; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Recarte Callado, Vicente Upna Orcid; Sánchez-Alarcos Gómez, Vicente Upna Orcid (Rede Latino-Americana de Materiais, 2018)   Artículo / Artikulua  OpenAccess
      In the present work, mechanical spectroscopy measurements as a function of temperature and strain have been performed in (at.%) Ni50Mn37Sn13-xTix (x=0, 0.5 and 2) ferromagnetic shape memory alloys in order both to study ...
    • Theoretical modeling and experimental verification of the scattering from a ferromagnetic microwire 

      Liberal Olleta, Íñigo Upna Orcid; Ederra Urzainqui,  Íñigo Upna Orcid; Gómez Polo, Cristina Upna Orcid; Labrador Otamendi, Alberto; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Gonzalo García, Ramón Upna Orcid (IEEE, 2011)   Artículo / Artikulua  OpenAccess
      This contribution presents a theoretical modelling of the scattering of ferromagnetic microwires in free-space and inside a rectangular waveguide, providing both an analytical solution and a physical interpretation of ...
    • Thermal degradation of type I collagen from bones 

      Lambri, M. L.; Giordano, E. D.; Bozzano, P. B.; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Recarte Callado, Vicente Upna Orcid (Tech Science Press, 2016)   Artículo / Artikulua  OpenAccess
      The denaturation processes of collagen in the temperature range between 450 K and 670 K are revealed through studies performed on cow rib bones by means of mechanical spectroscopy, differential scanning calorimetry, ...
    • Uncertainties caused by source directivity in room-acoustic investigations 

      San Martín Murugarren, Ricardo Upna Orcid; Arana Burgui, Miguel Upna Orcid (Acoustical Society of America (ASA), 2008)   Artículo / Artikulua  OpenAccess
      Although deviations in the measurement of acoustic parameters should be lower than the subjectively perceivable change in the corresponding parameter measured, this study reflects that directionality of sound sources could ...

      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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