• Dissolved solids and suspended sediment dynamics from five small agricultural watersheds in Navarre, Spain: a 10-year study 

      Merchán Elena, Daniel Upna; Luquin Oroz, Eduardo Adrián; Hernández García, Iker; Campo Bescós, Miguel Ángel Upna; Giménez Díaz, Rafael Upna; Casalí Sarasíbar, Javier Upna; Valle de Lersundi, Jokin del (Elsevier, 2019)   Artículo / Artikulua
      Dissolved solids (DS) and suspended sediment (SS) loads are considered relevant environmental problems. They are related to a wide range of on-site and off-site impacts, such as soil erosion or salinization of water bodies. ...
    • Robust multisampled capacitor voltage active damping for grid-connected power converters 

      Samanes Pascual, Javier; Urtasun Erburu, Andoni Upna; Gubía Villabona, Eugenio Upna; Petri, Alberto (Elsevier, 2019)   Artículo / Artikulua
      The derivative feedback of the capacitor voltage is one of the most extended active damping strategies, used to eliminate stability problems in grid-connected power converters with an LCL filter. This strategy is equivalent ...
    • Effects of a soft-core coulomb potential on the dynamics of a hydrogen atom near a metal surface 

      Iñarrea, Manuel; Lanchares, Víctor; Palacián Subiela, Jesús Francisco Upna; Pascual, Ana Isabel; Salas, José Pablo; Yanguas Sayas, Patricia Upna (Elsevier, 2019)   Artículo / Artikulua
      The goal of this paper is to investigate the effects that the replacement of the Coulomb potential by a soft-core Coulomb potential produces in the classical dynamics of a perturbed Rydberg hydrogen atom. As example, we ...
    • Suicidal attempts among patients with substance use disorders who present with suicidal ideation 

      López-Goñi, José Javier Upna; Fernández-Montalvo, Javier Upna; Arteaga Olleta, Alfonso Upna; Haro Escribano, Begoña (Elsevier, 2019)   Artículo / Artikulua
      Background and aims: Patients with addictions have a great risk of suicidal ideation and attempts. Suicidal behaviour is a continuum that begins with ideation and may continue with planning, ...
    • Suitability of Totora (Schoenoplectus californicus (C.A. Mey.) Soják) for its use in constructed wetlands in areas polluted with heavy metals 

      Blanco Vaca, Juan Antonio Upna (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      Schoenoplectus californicus subsp. tatora (totora) is an endemic plant from wetlands in South America´s Altiplano region. In the endorheic Titicaca-Desaguadero-Poopó-Salar de Coipasa system (TDPS), totora can be found along ...
    • Bringing the natives back: identifying and alleviating establishment limitations of native hardwood species in a conifer plantation 

      Li, Yu-Tsen; Lo, Yueh-Hsin Upna; Lin, Yi-Ching; Guan, Biing T.; Blanco Vaca, Juan Antonio Upna; 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 ...
    • Modelling the management of forest ecosystems: importance of wood decomposition 

      Blanco Vaca, Juan Antonio Upna; Page-Dumroese, Deborah S.; Jurgensen, Martin F.; Curran, Michale P.; Tirocke, Joanne M.; Walitalo, Joanna (Wiley, 2018)   Artículo / Artikulua
      Scarce and uncertain data on woody debris decomposition rates are available for calibrating forest ecosystem models, owing to the difficulty of their empirical estimations. Using field data from three experimental sites which ...
    • Extraordinary THz transmission with a small beam spot: the leaky wave mechanism 

      Navarro Cía, Miguel Upna; Pacheco Peña, Víctor Upna; Kuznetsov, Sergei A.; Beruete Díaz, Miguel Upna (Wiley, 2018)   Artículo / Artikulua
      The discovery of extraordinary optical transmission (EOT) through patterned metallic foils in the late 1990s was decisive for the development of plasmonics and cleared the path to employ small apertures for a variety of ...
    • Ku band low profile asymmetric Bull’s-Eye antenna with reduced side lobes and monopole feeding 

      Beaskoetxea Gartzia, Unai Upna; Torres García, Alicia E. Upna; Beruete Díaz, Miguel Upna (IEEE, 2018)   Artículo / Artikulua  OpenAccess
      In this paper, a linearly polarized low profile and asymmetric Bull’s-Eye leaky wave antenna fed by a monopole operating at 13 GHz is presented. Broadside radiation from the monopole is achieved by surrounding it with an ...
    • Drought-induced changes in wood density are not prevented by thinning in Scots pine stands 

      Candel Pérez, David Upna; Lo, Yueh-Hsin Upna; Blanco Vaca, Juan Antonio Upna; Chiu, Chih-Ming; Camarero, Jesús Julio; González de Andrés, Ester Upna; Imbert Rodríguez, Bosco Upna; Castillo Martínez, Federico Upna (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      Density is an important wood mechanical property and an indicator of xylem architecture and hydraulic conductivity. It can be influenced by forest management and climate. We studied the impact of thinning and climate ...
    • Virtual sensor for power measuring of an aerogenerator 

      Aceldegui Vernal, Javier (2018)   Trabajo Fin de Grado/Gradu Amaierako Lana  OpenAccess
      The purpose of the following project is to monitor the operation of a wind turbine for personal use. Realizing two types of studies, one focused on simulating in a real way, the operation of the wind turbine for a ...
    • Sampling stratification using aerial imagery to estimate fruit load in peach tree orchards 

      Miranda Jiménez, Carlos Upna; Santesteban García, Gonzaga Upna; Urrestarazu Vidart, Jorge; Loidi Erviti, Maite; Royo Díaz, José Bernardo Upna (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      A quick and accurate sampling method for determining yield in peach orchards could lead to better crop management decisions, more accurate insurance claim adjustment, and reduced expenses for the insurance industry. Given ...
    • Revisión bibliográfica sistemática y propuesta de valoración funcional para la prevención del hombro del nadador 

      Arrillaga Lecea, Beatriz (2018)   Trabajo Fin de Grado/Gradu Amaierako Lana  OpenAccess
      Antecedentes: Entre el 40% y el 90% de los nadadores de competición padecen dolor en el hombro. Esto llevó a definir, en 1974, el “hombro del nadador” como un síndrome común doloroso a causa del movimiento repetitivo del ...
    • Desarrollo de un snack de pan incorporando harina de Alphitobius diaperinus 

      Pombo Losada, Ana (2018)   Trabajo Fin de Grado/Gradu Amaierako Lana  OpenAccess
      Los insectos comestibles se presentan como una fuente de proteínas prometedora para satisfacer las necesidades de la creciente población mundial debido a sus interesantes perfiles nutricionales y a que ...
    • Síntesis y caracterización de nanopartículas de óxidos de hierro 

      Cortés Barrena, Javier (2018)   Trabajo Fin de Grado/Gradu Amaierako Lana  OpenAccess
      Este trabajo de fin de estudios aborda la síntesis y caracterización de nanopartículas de óxido de hierro por coprecipitación de sales de hierro en medio amoniacal. El contenido total de Fe se analizó por espectroscopia ...
    • A breath of fresh air: development of a video game using Unity 

      Ardanaz Santamaría, Mikel (2018)   Trabajo Fin de Grado/Gradu Amaierako Lana  OpenAccess
      The objective of this end-of-degree project is to cover every stage of the development using Unity of a survival 2D video game, from the design to the development part.
    • Network centrality and organizational aspirations: a behavioral interaction in the context of international strategic alliances 

      Shijaku, Elio; Larraza Kintana, Martín Upna; Urtasun Alonso, Ainhoa Upna (Palgrave Macmillan UK, 2018)   Artículo / Artikulua
      Considerando que el análisis de redes sociales ha estado asociado con aspiraciones organizacionales, poco es conocido sobre cómo el posicionamiento estructural de la empresa y particularmente la centralidad de la red afecta ...
    • Rectangular waveguide filters with meandered topology 

      Teberio Berdún, Fernando Upna; Percaz Ciriza, Jon Mikel Upna; Arregui Padilla, Iván Upna; Martín Iglesias, Petronilo; Lopetegui Beregaña, José María Upna; Gómez Laso, Miguel Ángel Upna; Arnedo Gil, Israel Upna (IEEE, 2018)   Artículo / Artikulua
      In this paper, a new topology for rectangular waveguide bandpass and low-pass filters is presented. A simple, accurate, and robust design technique for these novel meandered waveguide filters is provided. The proposed ...
    • Investigar es mirar lo que todos ven pero pensándolo de una manera diferente 

      López-Goñi, José Javier Upna (Asociación Proyecto Hombre, 2018)   Artículo / Artikulua  OpenAccess
      En este artículo se presentan los principales resultados de una línea de investigación que comenzó hace varios años el grupo de investigación en Psicología Clínica y Psicopatología de la Universidad Pública de Navarra en ...
    • Progreso social y democracia directa 

      Apezteguia Extramiana, Itsaso (2018)   Trabajo Fin de Grado/Gradu Amaierako Lana  OpenAccess
      En el presente estudio se construye un índice de progreso social. El índice compuesto desarrollado se basa en 44 subindicadores en el periodo 1990-2015 para 126 países con el objetivo de analizar la evolución del progreso ...