Now showing items 1-20 of 117

    • 300 GHz optoelectronic transmitter combining integrated photonics and electronic multipliers for wireless communication 

      Ali, Muhsin; Pérez Escudero, José Manuel Upna Orcid; Guzmán Martínez, Robinson Cruzoe; Lo, Mu Chieh; Ederra Urzainqui, Íñigo Upna Orcid; Gonzalo García, Ramón Upna Orcid; García Muñoz, Luis Enrique (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      THz communications systems at carrier frequencies above 200 GHz are the key to enable next-generation mobile communication networks with 100 Gbit/s wireless data rates. One of the key questions is, which carrier frequency ...
    • Advanced graphene-based transparent conductive electrodes for photovoltaic applications 

      Fernández, Susana; Boscá, Alberto; Pedrós, Jorge; Inés Ortigosa, Andrea; Fernández Vallejo, Montserrat Upna; Arnedo Gil, Israel Upna Orcid; González, José Pablo (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      New architectures of transparent conductive electrodes (TCEs) incorporating graphene monolayers in different configurations have been explored with the aim to improve the performance of silicon-heterojunction (SHJ) cell ...
    • Aggregator to electric vehicle LoRaWAN based communication analysis in vehicle-to-grid systems in smart cities 

      Klaina, Hicham; Picallo Guembe, Imanol Upna Orcid; López Iturri, Peio Upna Orcid; Astrain Escola, José Javier Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      Recently, there has been growing attention to the power grid management due to the increasing concerns on global warming. With the advancement in electric vehicles (EV) industry and the evolution in batteries, EVs become ...
    • Aldosterone impairs mitochondrial function in human cardiac fibroblasts via A-kinase anchor protein 12 

      Ibarrola Ulzurrun, Jaime Francisco Upna; Sádaba Sagredo, Rafael; Martínez Martínez, Ernesto; García Peña, Amaia; Gaínza Calleja, Alicia (Springer, 2018)   Artículo / Artikulua  OpenAccess
      Aldosterone (Aldo) contributes to mitochondrial dysfunction and cardiac oxidative stress. Using a proteomic approach, A-kinase anchor protein (AKAP)-12 has been identified as a down-regulated protein by Aldo in human cardiac ...
    • Analysis of the genetic diversity and structure across a wide range of germplasm reveals prominent gene flow in apple at the European level 

      Urrestarazu Vidart, Jorge Upna Orcid; Denancé, Caroline; Ravon, Elisa; Guyader, Arnaud; Guisnel, Rémi; Feugey, Laurence; Poncet, Charles; Lateur, Marc; Houben, Patrick; Ordidge, Matthew; Fernández Fernández, Felicidad; Evans, Kate M.; Paprstein, Frantisek; Sedlak, Jiri; Nybom, Hilde; Garkava Gustavsson, Larisa; Miranda Jiménez, Carlos Upna Orcid; Gassmann, Jennifer; Kellerhals, Markus; Suprun, Ivan; Pikunova, Anna V.; Krasova, Nina G.; Torutaeva, Elnura; Dondini, Luca; Tartarini, Stefano; Laurens, François; Durel, Charles Eric (BioMed Central, 2016)   Artículo / Artikulua  OpenAccess
      Background: The amount and structure of genetic diversity in dessert apple germplasm conserved at a European level is mostly unknown, since all diversity studies conducted in Europe until now have been performed on regional ...
    • Anomalous relative intensity noise transfer in ultralong random fiber lasers 

      Rota Rodrigo, Sergio Upna; Rizzelli, Giuseppe; Leandro González, Daniel Upna Orcid; Nuño, J.; López-Amo Sáinz, Manuel Upna Orcid (Optical Society of America, 2020)   Artículo / Artikulua  OpenAccess
      We present, for the first time, an experimental demonstration of RIN noise transfer dampening at low frequencies in random distributed feedback ultralong Raman fibre lasers based on conventional telecommunication fibres. ...
    • Antenna mutual coupling suppression over wideband using embedded periphery slot for antenna arrays 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; Shukla, Panchamkumar; See, Chan H.; Abd-Alhameed, Raed; Khalily, Mohsen; Falcone Lanas, Francisco Javier Upna Orcid; Limiti, Ernesto (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      This paper presents a new approach to suppress interference between neighbouring radiating elements resulting from surface wave currents. The proposed technique will enable the realization of low-profile implementation of ...
    • Automated reconfigurable antenna impedance for optimum power transfer 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna Orcid; Limiti, Ernesto (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper presents an approach to implement an automatically tuning antenna for optimising power transfer suitable for software defined radio (SDR). Automatic tuning is accomplished using a closed loop impedance tuning ...
    • Bitcoin and cybersecurity: temporal dissection of blockchain data to unveil changes in entity behavioral patterns 

      Zola, Francesco; Bruse, Jan Lukas; Eguimendia, María; Galar Idoate, Mikel Upna Orcid; Orduna Urrutia, Raúl (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      The Bitcoin network not only is vulnerable to cyber-attacks but currently represents the most frequently used cryptocurrency for concealing illicit activities. Typically, Bitcoin activity is monitored by decreasing anonymity ...
    • Bringing the natives back: identifying and alleviating establishment limitations of native hardwood species in a conifer plantation 

      Li, Yu-Tsen; Lo, Yueh-Hsin Upna Orcid; Lin, Yi-Ching; Guan, Biing T.; Blanco Vaca, Juan Antonio Upna Orcid; You, Chi-How (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      To facilitate the reintroduction of five native late-successional Taiwanese Fagaceae species into Japanese cedar (Cryptomeria japonica (D.) Don) plantations, we experimented with methods to alleviate their establishment ...
    • Cardiorespiratory fitness, muscular strength, and obesity in adolescence and later chronic disability due to cardiovascular disease: a cohort study of 1 million men 

      Henriksson, Hanna; Henriksson, Pontus; Tynelius, Per; Ekstedt, Mattias; Berglind, Daniel; Labayen Goñi, Idoia Upna Orcid; Ruiz, Jonatan R.; Lavie, Carl J.; Ortega, Francisco B. (Oxford University Press, 2020)   Artículo / Artikulua  OpenAccess
      Aims: Cardiorespiratory fitness, muscular strength, and obesity in adulthood are risk factors for cardiovascular disease (CVD). However, little is known regarding the associations of these risk factors, already in adolescence, ...
    • Chemical and mechanical stability of air annealed cathodic arc evaporated CrAlON coatings 

      Almandoz Sánchez, Eluxka Upna Orcid; Fuentes, Gonzalo G.; Fernández Palacio, José; Martínez de Bujanda Carasusán, Javier; Rodríguez Trías, Rafael Upna Orcid (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      This study reports the synthesis and characterization of ternary Cr-Al-O and quaternary Cr-Al-O-N coatings deposited by cathodic arc physical vapour deposition, for various nitrogen and oxygen mass flow ratios during the ...
    • Coarse woody debris' invertebrate community is affected directly by canopy type and indirectly by thinning in mixed scots pine-European beech forests 

      Herrera Álvarez, Ximena Upna Orcid; Blanco Vaca, Juan Antonio Upna Orcid; Imbert Rodríguez, Bosco Upna Orcid; Álvarez, Willin; Rivadeneira Barba, Gabriela (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      Research Highlights: Thinning and tree species alter the forest floor microclimate by modifying canopy cover, radiation, wind, and humidity. Thus, forest management can directly influence the edaphic mesofauna responsible ...
    • Comparative study of nonparametric and parametric PV models to forecast AC power output of PV plants 

      Almeida, Marcelo Pinho; Muñoz Escribano, Mikel Upna; Parra Laita, Íñigo de la Upna Orcid; Perpiñán, Óscar; Narvarte Fernández, Luis (EU PVSEC, 2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, a comparison between two approaches to predict the AC power output of PV systems is carried out in terms of forecast performance. Each approach uses one of the two main types of PV modeling, parametric and ...
    • A comprehensive survey of 'metamaterial transmission-line based antennas: design, challenges, and applications' 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Naser Moghadasi, Mohammad; Falcone Lanas, Francisco Javier Upna Orcid (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      In this review paper, a comprehensive study on the concept, theory, and applications of composite right/left-handed transmission lines (CRLH-TLs) by considering their use in antenna system designs have been provided. It ...
    • A comprehensive survey on "Various decoupling mechanisms with focus on metamaterial and metasurface principles applicable to SAR and MIMO antenna systems" 

      Alibakhshikenari, Mohammad; Babaeian, Fatemeh; Virdee, Bal S.; Aïsa, Sonia; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; See, Chan H.; Falcone Lanas, Francisco Javier Upna Orcid; Althuway, Ayman Abdulhadi; Huynen, Isabelle; Abd-Alhameed, Raed; Limiti, Ernesto (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      Nowadays synthetic aperture radar (SAR) and multiple-input-multiple-output (MIMO) antenna systems with the capability to radiate waves in more than one pattern and polarization are playing a key role in modern telecommunication ...
    • Consensus image method for unknown noise removal 

      González Jaime, Luis; Kerre, Etienne E.; Nachtegael, Mike; Bustince Sola, Humberto Upna Orcid (Elsevier, 2014)   Artículo / Artikulua  OpenAccess
      Noise removal has been, and it is nowadays, an important task in computer vision. Usually, it is a previous task preceding other tasks, as segmentation or reconstruction. However, for most existing denoising algorithms the ...
    • Control strategies to smooth short-term power fluctuations in large photovoltaic plants using battery storage systems 

      Marcos Álvarez, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; García Solano, Miguel Upna Orcid; Marroyo Palomo, Luis Upna Orcid (MDPI, 2014)   Artículo / Artikulua  OpenAccess
      The variations in irradiance produced by changes in cloud cover can cause rapid fluctuations in the power generated by large photovoltaic (PV) plants. As the PV power share in the grid increases, such fluctuations may ...
    • Correlation between discharge timings of pairs of motor units reveals the presence but not the proportion of common synaptic input to motor neurons 

      Rodríguez Falces, Javier Upna Orcid; Negro, Francesco; Farina, Dario (American Physiological Society, 2017)   Artículo / Artikulua  OpenAccess
      We investigated whether correlation measures derived from pairs of motor unit (MU) spike trains are reliable indicators of the degree of common synaptic input to motor neurons. Several 50-s isometric contractions of the ...
    • Coupled biomechanical response of the cornea assessed by non-contact tonometry. A simulation study 

      Ariza Gracia, Miguel A.; Zurita Gabasa, Jesús Upna; Piñero, David P.; Rodríguez Matas, José F.; Calvo, Begoña (Public Library of Science, 2015)   Artículo / Artikulua  OpenAccess
      The mechanical response of the cornea subjected to a non-contact air-jet tonometry diagnostic test represents an interplay between its geometry, the corneal material behavior and the loading. The objective is to study ...