Now showing items 1-20 of 91

    • Fitness, physical activity and academic achievement in overweight/obese children 

      Cadenas-Sánchez, Cristina; Migueles, Jairo H.; Esteban Cornejo, Irene; Mora González, Jose; Henriksson, Pontus; Rodríguez Ayllon, María; Molina García, Pablo; Löf, M.; Labayen Goñi, Idoia Upna; Hillman, Charles H.; Catena, Andrés; Ortega, Francisco B. (Taylor & Francis, 2020)   Artículo / Artikulua
      The aim of this study was to examine the associations of fitness and physical activity with academic achievement in children with overweight/obesity. A total of 106 (10.0 ± 1.1y, 61 boys) children participated. The fitness ...
    • Overcome the limitations of performance parameters of on-chip antennas based on metasurface and coupled feeding approaches for applications in system-on-chip for THz integrated-circuits 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna; Limiti, Ernesto (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena
      This paper proposes a new solution to improve the performance parameters of on-chip antenna designs on standard CMOS silicon (Si.) technology. The proposed method is based on applying the metasurface technique and exciting ...
    • Automated reconfigurable antenna impedance for optimum power transfer 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna; Limiti, Ernesto (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena
      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 ...
    • LeviSense: a platform for the multisensory integration in levitating food and insights into its effect on flavour perception 

      Chi, Thanh Vi; Marzo Pérez, Asier Upna; Memoli, Gianluca; Maggioni, Emanuela; Ablart, Damien (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      Eating is one of the most multisensory experiences in everyday life. All of our five senses (i.e. taste, smell, vision, hearing and touch) are involved, even if we are not aware of it. However, while multisensory integration ...
    • A novel 0.3-0.31 THz GaAs-based transceiver with on-chip slotted metamaterial antenna based on SIW technology 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna; Limiti, Ernesto (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena
      This paper presents a novel on-chip antenna with fully integrated 0.3-0.31 THz transceiver is implemented on 0.5μm GaAs substrate, and comprises a voltage-controlled oscillator (VCO), a buffer amplifier, a modulator stage, ...
    • Enhanced wireless channel estimation through parametric optimization of hybrid ray launching-collaborative filtering technique 

      Casino, Fran; López Iturri, Peio Upna; Aguirre Gallego, Erik Upna; Azpilicueta Fernández de las Heras, Leyre Upna; Falcone Lanas, Francisco Javier Upna; Solanas, Agusti (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      In this paper, an enhancement of a hybrid simulation technique based on combining collaborative filtering with deterministic 3D ray launching algorithm is proposed. Our approach implements a new methodology of data depuration ...
    • Optimizing energy consumption in transportation: literature review, insights, and research opportunities 

      Corlu, Canan Gunes; Torre, Rocío de la Upna; Serrano Hernández, Adrián Upna; Juan, Ángel Alejandro; Faulín Fajardo, Javier Upna (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      From airplanes to electric vehicles and trains, modern transportation systems require large quantities of energy. These vast amounts of energy have to be produced somewhere—ideally by using sustainable sources—and then ...
    • Topological features dictate the mechanics of the mammalian brains 

      Sáez, Pablo; Duñó, C.; Sun, L.Y.; Antonovaite, N.; Malvè, Mauro Upna; Tost, D.; Goriely, A. (Elsevier, 2020)   Artículo / Artikulua
      Understanding brain mechanics is crucial in the study of pathologies involving brain deformations such as tumor, strokes, or in traumatic brain injury. Apart from the intrinsic mechanical properties of the brain tissue, ...
    • Differences in brain volume between metabolically healthy and unhealthy overweight and obese children: the role of fitness 

      Cadenas-Sánchez, Cristina; Esteban Cornejo, Irene; Migueles, Jairo H.; Labayen Goñi, Idoia Upna; Verdejo Román, Juan; Mora González, Jose; Henriksson, Pontus; Maldonado, José; Gómez Vida, José; Hillman, Charles H.; Erickson, Kirk I.; Kramer, Arthur F.; Catena, Andrés; Ortega, Francisco B. (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      The aim of this study was to examine whether metabolically healthy overweight/obese children have greater global and regional gray matter volumes than their metabolically unhealthy peers. We further examined the association ...
    • Step-based metrics and overall physical activity in children with overweight or obesity: cross-sectional study 

      Migueles, Jairo H.; Cadenas-Sánchez, Cristina; Aguiar, Elroy J.; Molina García, Pablo; Solís Urra, Patricio; Mora González, Jose; García Mármol, Eduardo; Shiroma, Eric J.; Labayen Goñi, Idoia Upna; Chillón, Palma; Löf, M.; Tudor Locke, Catrine; Ortega, Francisco B. (JMIR Publications, 2020)   Artículo / Artikulua  OpenAccess
      Background: Best-practice early interventions to increase physical activity (PA) in children with overweight and obesity should be both feasible and evidence based. Walking is a basic human movement pattern that is practical, ...
    • High-gain metasurface in polyimide on-chip antenna based on CRLH-TL for sub-terahertz integrated circuits 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna; Limiti, Ernesto (Nature Research, 2020)   Artículo / Artikulua  OpenAccess
      This paper presents a novel on-chip antenna using standard CMOS-technology based on metasurface implemented on two-layers polyimide substrates with a thickness of 500 μm. The aluminium ground-plane with thickness of 3 μm ...
    • 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; 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, ...
    • ENSO and NAO affect long-term leaf litter dynamics and stoichiometry of Scots pine and European beech mixedwoods 

      González de Andrés, Ester Upna; Blanco Vaca, Juan Antonio Upna; Imbert Rodríguez, Bosco Upna; Guan, Biing T.; Lo, Yueh-Hsin Upna; Castillo Martínez, Federico Upna (Wiley, 2019)   Artículo / Artikulua  OpenAccess
      Litterfall dynamics (production, seasonality and nutrient composition) are key factors influencing nutrient cycling. Leaf litter characteristics are modified by species composition, site conditions and water availability. ...
    • Multiplexing optical fiber Fabry-Perot interferometers based on air-microcavities 

      Pérez Herrera, Rosa Ana Upna; Novais, S.; Bravo Acha, Mikel Upna; Leandro González, Daniel Upna; Silva, Susana; Frazão, Orlando; López-Amo Sáinz, Manuel Upna (SPIE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work we demonstrate the multiplexing capability of new optical fiber Fabry-Perot interferometers based on airmicrocavities using a commercial FBG interrogator. Three optimized air-microcavity interferometer sensors ...
    • High-isolation leaky-wave array antenna based on CRLH-metamaterial implemented on SIW with ±30° frequency beam-scanning capability at millimetre-waves 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna; Limiti, Ernesto (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      The paper presents a feasibility study on the design of a new metamaterial leaky-wave antenna (MTM-LWA) used in the construction of a 1 × 2 array which is implemented using substrate-integrated waveguide (SIW) technology ...
    • A new role for aldosterone/mineralocorticoid receptor pathway in the development of mitral valve prolapse 

      Ibarrola Ulzurrun, Jaime Francisco Upna (2019)   Tesis doctoral / Doktoretza tesia
      La hipótesis de trabajo es que la vía Aldosterona/Receptor Mineralocorticoide (Aldo/RM) podría jugar un papel en el desarrollo del prolapso de la válvula mitral (PVM), modulando la activación de las células intersticiales ...
    • Geometric multigrid methods for Darcy–Forchheimer flow in fractured porous media 

      Arrarás Ventura, Andrés Upna; Gaspar, F. J.; Portero Egea, Laura Upna; Rodrigo, C. (Elsevier, 2019)   Artículo / Artikulua
      In this paper, we present a monolithic multigrid method for the efficient solution of flow problems in fractured porous media. Specifically, we consider a mixed-dimensional model which couples Darcy flow in the porous ...
    • Noncontiguous operon is a genetic organization for coordinating bacterial gene expression 

      Sáenz Lahoya, S.; Bitarte, Nerea Upna; Garcia, B.; Burgui Erice, Saioa Upna; Vergara Irigaray, Marta Upna; Valle Turrillas, Jaione Upna; Solano Goñi, Cristina Upna; Toledo Arana, Alejandro Upna; Lasa Uzcudun, Íñigo Upna (National Academy of Sciences, 2019)   Artículo / Artikulua  OpenAccess
      Bacterial genes are typically grouped into operons defined as clusters of adjacent genes encoding for proteins that fill related roles and are transcribed into a single polycistronic mRNA molecule. This simple organization ...
    • Experimental investigation of the particle oscillation instability in a single-axis acoustic levitator 

      Andrade, Marco Aurélio Brizzotti; Polychronopoulos, Spyros; Memoli, Gianluca; Marzo Pérez, Asier Upna (AIP Publishing, 2019)   Artículo / Artikulua  OpenAccess
      Single-axis acoustic levitators are employed in biomedicine, chemistry and physics experiments due to their ability to trap in mid-air objects of a wide range of materials and sizes. Although this type of levitator has ...
    • Super-wide impedance bandwidth planar antenna for microwave and millimeter-wave applications 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna; Limiti, Ernesto (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      A feasibility study of a novel configuration for a super-wide impedance planar antenna is presented based on a 2 × 2 microstrip patch antenna (MPA) using CST Microwave Studio. The antenna comprises a symmetrical arrangement ...