Mostrando ítems 1-20 de 836

    • Ultrahigh refractive index sensitivity with lossy mode resonance in a side-polished low-index polymer optical fiber 

      López Vargas, Juan David; Matías Maestro, Ignacio Upna Orcid; Werneck, Marcelo M.; Allil, Regina C.; Del Villar, Ignacio Upna Orcid (IEEE, 2024)   Artículo / Artikulua  OpenAccess
      This work presents a theoretical–experimental study of a refractive index (RI) sensor based on lossy mode resonances (LMRs) generated with a side-polished low-index polymer optical fiber. The theoretical part involves ...
    • Diagnostic and prognostic potential of multiparametric renal MRI in Kidney transplant patients 

      Echeverría Chasco, Rebeca; Martín Moreno, Paloma L.; Aramendía Vidaurreta, Verónica; García-Ruiz, Leyre; Mora-Gutiérrez, José María; Vidorreta Díaz de Cerio, Marta; Villanueva Larre, Arantxa Upna Orcid; Cano, David; Bastarrika, Gorka; García Fernández, Nuria; Fernández Seara, María A. (Wiley, 2024)   Artículo / Artikulua  OpenAccess
      Background: Multiparametric MRI provides assessment of functional and structural parameters in kidney allografts. Itoffers a non-invasive alternative to the current reference standard of kidney biopsy. Purpose: To evaluate ...
    • Construction methods of fuzzy implications on bounded posets 

      Wang, Mei; Zhang, Xiaohong; Bustince Sola, Humberto Upna Orcid; Fernández Fernández, Francisco Javier Upna Orcid (Elsevier, 2024)   Artículo / Artikulua
      The fuzzy implication on bounded lattices was introduced by Palmeira et al., and the method of extending fuzzy implications on bounded lattices by using retraction was provided. However, we find that the extension of fuzzy ...
    • Mid-air contactless haptics to augment VR experiences 

      Ezcurdia Aguirre, Íñigo Fermín Upna Orcid; Fernández Ortega, Unai Javier; Olaz Moratinos, Xabier; Marzo Pérez, Asier Upna Orcid (Association for Computing Machinery, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We present four technologies to deliver contactless haptic stimuli for enriching Virtual Reality (VR) experiences. The technologies are electrostatic piloerection, focused light-induced heat, electric plasma, and ultrasound; ...
    • Ag@Fe3O4-coated U-shaped plastic optical fiber sensor for H2S detection 

      López Vargas, Juan David; Dante, Alex; Allil, Regina C.; Del Villar, Ignacio Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Werneck, Marcelo M. (Elsevier, 2024)   Artículo / Artikulua
      This work presents the fabrication of U-shaped plastic optical fiber (POF) sensors for hydrogen sulfide (H2S) detection, coated with Fe3O4 nanoparticles synthetized using the Pulsed Laser Ablation in Liquid (PLAL) technique. ...
    • Energía sostenible: sin malos humos 

      Samanes Pascual, Javier Upna Orcid; Pascual Miqueleiz, Julio María Upna Orcid; Berrueta Irigoyen, Alberto Upna Orcid; Araiz Vega, Miguel Upna Orcid; Catalán Ros, Leyre Upna Orcid; Aranguren Garacochea, Patricia Upna Orcid; Arricibita de Andrés, David Upna Orcid (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2019)   Libro / Liburua  OpenAccess
      ¿Puede España ser sostenible energéticamente? Si alguna vez te has planteado esta pregunta, o quieres saber en qué gastamos la energía y de dónde podría ser obtenida, aquí encontrarás respuestas. Nuestros recursos ...
    • From fundamental materials chemistry to sensing applications: unravelling the water adsorption mechanism of a luminescent optical fibre sensor membrane 

      Cruz Quesada, Guillermo Upna Orcid; Rosales Reina, Beatriz; López Torres, Diego Upna Orcid; Reinoso, Santiago Upna Orcid; López Ramón, María Victoria; Arzamendi Manterola, María Cruz Upna Orcid; Elosúa Aguado, César Upna Orcid; Espinal Viguri, Maialen Upna Orcid; Garrido Segovia, Julián José Upna Orcid (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
      This work provides insight into the correlation between the luminescent response of a water-vapour optical fibre sensor and the textural properties of its lanthanide-doped silica coating. To this end, a library of 16 silica ...
    • On the characterization of lithium-ion batteries under overtemperature and overcharge conditions: identification of abuse areas and experimental validation 

      Lalinde Sainz, Iñaki; Berrueta Irigoyen, Alberto Upna Orcid; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
      Although lithium-ion batteries have gained considerable popularity in renewable energy and electric vehicle applications, their safety still remains a concern under certain voltage, temperature, or state of charge conditions. ...
    • Photoisomerization-induced LMR shift for UV radiation detection 

      Gallego Martínez, Elieser Ernesto; Ruiz Zamarreño, Carlos Upna Orcid; Matías Maestro, Ignacio Upna Orcid (Elsevier, 2024)   Artículo / Artikulua
      This work presents an optical sensor for ultraviolet radiation (UV) detection, based on the combined effects of Lossy Mode Resonance (LMR) in the mid infrared (MIR) spectral region and the photoisomerization of a polymeric ...
    • Conflicto normativo entre dos conceptos de biomasa: la condición jurídica de biomasa de unos residuos de celulosa en la legislación de emisiones industriales 

      Alenza García, José Francisco Upna Orcid (Universidad de Sevilla, 2023)   Artículo / Artikulua  OpenAccess
      Este estudio tiene su origen en un dictamen solicitado por una empresa con el objeto de determinar la condición jurídica de biomasa de los residuos de celulosa producidos en sus instalaciones industriales a efectos de la ...
    • Comment on 'Effects of Vivifrail multicomponent intervention on functional capacity' by Casas-Herrero et al.-The authors reply. 

      Sanchez Sanchez, Juan luis; Izquierdo Redín, Mikel; López Saez de Asteasu, Mikel; Antón Rodrigo, Iván; Galbete Jiménez, Arkaitz Upna Orcid; Álvarez Bustos, Alejandro; Casas Herrero, Álvaro Upna (Wiley, 2024)   Artículo / Artikulua  OpenAccess
      In this response letter, we would like to clarify some aspects related to the methodology and inferences derived from our work entitled 'Effects of Vivifrail multicomponent intervention on functional capacity', which was ...
    • A biological insight of hops wastes vermicomposting by Eisenia Andrei 

      González Moreno, Miguel Ángel Upna Orcid; García Gracianteparaluceta, Beñat; Marcelino Sádaba, Sara Upna Orcid; Prieto Cobo, Eduardo Upna Orcid; Seco Meneses, Andrés Upna Orcid (Springer, 2024)   Artículo / Artikulua  OpenAccess
      The study was conducted to assess the feasibility of using Eisenia andrei earthworms for vermicomposting hop remains from a lupulin extraction enterprises for the brewing industry. Vermicomposting process was conducted ...
    • Ultraviolet erythemal irradiance (UVER) under different sky conditions in Burgos, Spain: multilinear regression and artificial neural network models 

      García-Rodríguez, Sol; García-Rodríguez, Ana; Granados-López, D.; García Ruiz, Ignacio Upna Orcid; Alonso-Tristán, Cristina (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      Different strategies for modeling Global Horizontal UltraViolet Erythemal irradiance (GHUVE) based on meteorological parameters measured in Burgos (Spain) have been developed. The experimental campaign ran from September ...
    • Generation of lossy mode resonances (LMR) using perovskite nanofilms 

      Armas, Dayron; Matías Maestro, Ignacio Upna Orcid; López-González, M. Carmen; Ruiz Zamarreño, Carlos Upna Orcid; Zubiate Orzanco, Pablo Upna Orcid; Del Villar, Ignacio Upna Orcid; Romero, Beatriz (Chinese Academy of Sciences, 2024)   Artículo / Artikulua  OpenAccess
      The results presented here show for the first time the experimental demonstration of the fabrication of lossy mode resonance (LMR) devices based on perovskite coatings deposited on planar waveguides. Perovskite thin films ...
    • A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors 

      García Ruiz, Ignacio Upna Orcid; García Gorostiaga, Almudena; Torres Escribano, José Luis Upna Orcid (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      Mathematical models for the estimation of the angular distribution of diffuse radiance/luminance in the sky describe the anisotropic character of diffuse solar radiation and daylight in the sky vault. In most of these ...
    • Enhanced single-stage folded cascode OTA suitable for large capacitive loads 

      López Martín, Antonio Upna Orcid; Garde Luque, María Pilar Upna Orcid; Algueta-Miguel, Jose M. Upna Orcid; Cruz Blas, Carlos Aristóteles de la Upna Orcid; Carvajal, Ramón G.; Ramírez-Angulo, Jaime (IEEE, 2018)   Artículo / Artikulua  OpenAccess
      An enhanced single-stage folded cascode operational transconductance amplifier able to drive large capacitive loads is presented. Circuits that adaptively bias the input differential pair and the current folding stage ...
    • 3-D printed horn antennas and components performance for space and telecommunications 

      Teniente Vallinas, Jorge; Iriarte Galarregui, Juan Carlos; Caballero Nagore, Rubén; Valcázar Berdofe, Daniel; Goñi, Mikel; Martínez, Aitor (IEEE, 2018)   Artículo / Artikulua  OpenAccess
      In this work, a study of the performance of several antennas and components, manufactured using an accurate stereolithography 3D printer and resin for maximum accuracy and detail, is carried out. Electroless plating of ...
    • Moisture content estimation models of flour matrices in the 67-110 GHz frequency range using a nondestructive and contactless monitoring system 

      Quemada Mayoral, Carlos Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Gonzalo García, Ramón Upna Orcid; Iriarte Galarregui, Juan Carlos Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      This work addresses the lack of moisture content estimation models for food products in the millimeter-wave frequency range and showcases the potential of this range for designing compact, cost-effective, and in-line food ...
    • Two-wavelength phase-sensitive OTDR sensor using perfect periodic correlation codes for measurement range enhancement, noise reduction and fading compensation 

      Sagüés García, Mikel Upna Orcid; Piñeiro Ben, Enrique; Cerri, Enis; Minardo, Aldo; Eyal, Avishay; Loayssa Lara, Alayn (Optica, 2021)   Artículo / Artikulua  OpenAccess
      We demonstrate a two-wavelength differential-phase-measuring OTDR sensor that uses perfect periodic correlation phase codes to enhance the measurement performance. The two-wavelength technique extends the measurement range ...
    • Un modelo para predecir cuántas camas UCI harán falta durante cada oleada 

      Mallor Giménez, Fermín Upna Orcid; García de Vicuña Bilbao, Daniel Upna Orcid (Asociacion the Conversation España, 2021)   Artículo / Artikulua  OpenAccess
      La crisis financiera mundial de 2008 puso de moda en España el término económico “prima de riesgo”, hasta entonces desconocido. Del mismo modo, la pandemia ha popularizado expresiones y términos como “doblar la curva”, ...

      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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