Now showing items 1-20 of 802

    • Temperature indicators and overtemperature detection in lithium-ion batteries based on electrochemical impedance spectroscopy 

      Lalinde Sainz, Iñaki; Berrueta Irigoyen, Alberto Upna Orcid; Soto Cabria, Adrián Upna Orcid; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Lithium-ion batteries are the leading technology for energy storage systems due to their attractive advantages. However, the safety of lithium-ion batteries is a major concern, as their operating conditions are limited in ...
    • Onset of irreversible reactions in overcharging lithium-ion cells: an experimental and modeling approach 

      Irujo Izcue, Elisa; Berrueta Irigoyen, Alberto Upna Orcid; Lalinde Sainz, Iñaki; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Lithium-ion batteries are energy storage systems used in an increasing number of applications. Due to their flammable materials, their use entails risks of fire and explosion. The study of the abuse operation of these ...
    • Assessment of flesh browning diversity in apple germplasm collections phenotyped by image analysis 

      Miranda Jiménez, Carlos Upna Orcid; Irisarri, P.; Arellano Zapatero, Julia; Bielsa, F. J.; Valencia Leoz, Ana Upna; Urrestarazu Vidart, Jorge; Pina, Ana; Santesteban García, Gonzaga Upna Orcid; Castel, L.; Errea, Pilar (ISHS, 2023)   Contribución a congreso / Biltzarrerako ekarpena
      Enzymatic flesh browning (EB) is one of the major problems affecting the quality and limiting the shelf life of minimally processed fruit. Traditionally, EB has been measured objectively using colourimeters. However, ...
    • La literatura infantil y juvenil en el Grado de Maestro en Educación Primaria: una propuesta didáctica 

      Sbriziolo, Carola Upna Orcid; Arellano Yanguas, Villar Upna Orcid (Euskal Herriko Unibertsitateko Argitalpen Zerbitzua/Servicio Editorial de la Universidad del País Vasco, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Partiendo del presupuesto de que investigación y docencia deben ir de la mano y que en educación es necesario reflexionar sobre la propia práctica docente, se presenta aquí una propuesta didáctica llevada a cabo dentro de ...
    • Asymmetrical firing angle modulation for 12-pulse thyristor rectifiers supplying high-power electrolyzers 

      Iribarren Zabalegui, Álvaro Upna; Barrios Rípodas, Ernesto Upna Orcid; Elizondo Martínez, David Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper presents an asymmetrical firing angle modulation strategy for 12-pulse thyristor rectifiers aimed at supplying high-power electrolyzers, which allows to reduce the size of the passive filter and the static ...
    • A technology review and field testing of a soil water quality monitoring system 

      Afridi, Waqas A. K.; Akhter, Fowzia; Vitoria Pascual, Ignacio Upna Orcid; Mukhopadhyay, Subhas C. (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena
      Soil water quality is one of the most influential factors in ensuring the productivity of agricultural farms. Soil water quality and soil quality are hugely dependent on each other. Hence, it is essential to have a clear ...
    • Building global competencies: a strategic approach to internationalization of engineering education 

      Berrueta Irigoyen, Alberto Upna Orcid; Samanes Pascual, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (Eindhoven University of Technology and Fontys University of Applied Sciences, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      International mobility is an essential aspect of undergraduate education that enables students to acquire the necessary competences required by the European Higher Education Area (EHEA). However, small universities such ...
    • AI training for application to industrial robotics: trajectory generation for neural network tuning 

      Merino Olagüe, Mikel; Ibarrola Chamizo, Javier; Aginaga García, Jokin Upna Orcid; Hualde Otamendi, Mikel (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In the present work robot trajectories are generated and kinematically simulated. Different data (joint coordinates, end effector position and orientation, images, etc.) are obtained in order to train a neural network ...
    • Enhancing engineering competencies curricula in the context of university-industry chairs 

      Sanchis Gúrpide, Pablo Upna Orcid; San Martín Biurrun, Idoia Upna Orcid; Berrueta Irigoyen, Alberto Upna Orcid; Samanes Pascual, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; Astrain Ulibarrena, David Upna Orcid; Goicoechea Fernández, Javier Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      University-industry Chairs can play a key role to enhance the acquisition of certain curricular competencies of the Engineering Degrees such as teamwork capability, oral and written communication skills, entrepreneurship ...
    • Integrated platform for microfluidics based cell culture applications 

      Dudala, Sohan; Dubey, Satish K.; Javed, Arshad; Ozcariz Celaya, Aritz Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Goel, Sanket (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The ongoing developments in the field of microfluidics-based cell culture have led to a significant interest in systems for their visualization and control. The existing cell culture systems are limiting due to cost, ...
    • Role of student associations in the acquisition of competences in university engineering programs 

      Samanes Pascual, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Berrueta Irigoyen, Alberto Upna Orcid; Rosado Galparsoro, Leyre Upna Orcid; Soto Cabria, Adrián Upna Orcid; Elizondo Martínez, David Upna Orcid; Catalán Ros, Leyre Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Students in the STEM field (Science, Technology, Engineering and Mathematics), do not only require deep technical knowledge, but a complete set of global skills related to management, teamwork, lifelong learning, personal ...
    • A novel ku-band circularly-polarized horn antenna based on a ridged wall 

      Marzo Oyarbide, Andoni; Teberio Berdún, Fernando Upna Orcid; Teniente Vallinas, Jorge Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, a novel wideband (31.5 % bandwidth) circularly-polarized antenna based on a ridged wall is presented. A pair of ridges on the inner wall of the horn serves as an inbuilt polarizer, which can generate left-hand ...
    • Suppressing open stopband for terahertz periodic microstrip leaky-wave antennas 

      Haddad, Thomas; Biurrun Quel, Carlos Upna Orcid; Lu, Peng; Kaya, Hacer; Mohammad, Israa; Stöhr, Andreas (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper reports on a periodic microstrip Leaky-wave antenna (LWA). The open stopband issue is suppressed by altering the unit cell using a matching stub. The developed LWA is based on a grounded InP-substrate of 50 ...
    • Multi-sensing platform design with a grating-based nanostructure on a coverslip substrate 

      Imas González, José Javier Upna Orcid; Del Villar, Ignacio Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Mukhopadhyay, Subhas C.; Matías Maestro, Ignacio Upna Orcid (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena
      Two different thin film designs with a grating pattern are simulated on a soda lime coverslip, which acts as optical waveguide, with the purpose of generating both a lossy mode resonance (LMR) in transmission and reflection ...
    • Monitoring the thermal potential of low-cost radiative cooling materials under static and dynamic conditions of exposure 

      Chiatti, Chiara; Kousis, Ioannis; Fabiani, Claudia; Carlosena Remírez, Laura Upna Orcid; Pisello, Anna Laura (Morlacchi Editore University Press, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Reflecting the radiation of the sun while emitting thermal radiation to cold outer space has proven to be an effective solution against urban overheating. The latter severely impact the energy consumption of buildings, ...
    • A new ABS conductive material to develop fully 3D-printed patch antennas 

      Jiménez Peña, Javier; Irigoyen, Joseba; Aresti Bartolomé, Maite; Ederra Urzainqui, Íñigo Upna Orcid; Bravo Larrea, Javier Upna Orcid; Iriarte Galarregui, Juan Carlos Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Additive manufacturing technology is rapidly overcoming some of its initial limitations and, thus, creating a very useful engineering option for prototyping complex geometries for a wide range of electronic devices. Based ...
    • XXXIII Reunión Nacional de Suelos: libro de resúmenes 

      Arricibita Videgain, Javier; Valle de Lersundi, Jokin del; Enrique Martín, Alberto Upna Orcid; Eslava Lecumberri, Javier; Lasarte Arangoa, Mikel; Ruiz Sagaseta de Ilurdoz, Alberto Upna; Sanz Morales, Francisco Javier; Senar Mozo, Ainara; Virto Quecedo,  Íñigo Upna Orcid (2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      La XXXIII Reunión Nacional de Suelos (RENS) de la SECS, celebrada en Pamplona/Iruña del 12 al 15 de septiembre de 2023, pretende ser un foro para la comunidad científica vinculada a la Ciencia del Suelo que permita reflexionar ...
    • Full-space metasurface at millimeter-wave frequencies 

      Ruiz Fernández de Arcaya, María; Marzo Pérez, Asier Upna Orcid; Beruete Díaz, Miguel Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Conventional metasurfaces provide control over the electromagnetic waves in a single working frequency operating either in transmission or reflection. Full-Space Metasurfaces (FSM) are an extension that allows operation ...
    • Micro sized interdigital capacitor for gases detection based on graphene oxide coating 

      Vitoria Pascual, Ignacio Upna Orcid; Armas, Dayron; Coronel Camones, Carlos Manuel; Algarra González, Manuel; Ruiz Zamarreño, Carlos Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Mukhopadhyay, Subhas C. (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena
      A micro sized interdigital capacitor sensible to CO2 and NO is studied in this work. The photolithography technique enables to obtain fingers with dimensions of 10 × 500 µm and separated 7 µm between them. The deposition ...
    • Aluminum coated fiber optic sensor for enhancing flow rate measurement 

      Rodríguez Rodríguez, Armando; Urroz Unzueta, José Carlos Upna Orcid; Diéguez Elizondo, Pedro Upna Orcid; Bravo Acha, Mikel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid; López Rodríguez, José Javier Upna Orcid (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A water flow and velocity aluminum-coated Fiber Bragg Grating sensor system for open channels was designed, simulated and tested. The sensing head was designed, ruggedized and customized to measure velocities at ...

      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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