• Yield and quality of sugar snap pea in the Ebro Valley: sowing date and seed density 

      Azpilicueta Unanua, Miren Upna; Irigoyen Iriarte, Ignacio Upna Orcid; Lasa Larrea, Berta Upna Orcid; Muro Erreguerena, Julio Upna Orcid; Aparicio Tejo, Pedro María Upna Orcid (Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, 2012)   Artículo / Artikulua  OpenAccess
      Sugar snap pea (Pisum sativum L. var. macrocarpon Ser.) is an edible-podded sweet pea that is being considered as a new totally mechanized crop to supply raw material to the agri-food industry of the Ebro Valley (Northern ...
    • Young people, social workers and social work education: the role of digital skills 

      López Peláez, Antonio; Erro Garcés, Amaya Upna Orcid; Gómez Ciriano, Emilio José (Routledge, 2020)   Artículo / Artikulua  OpenAccess
      This paper addresses a key issue in the development of youth-focused social work: the role of digital skills in the relationship between young people and social workers who work with these native digital users. To this ...
    • Young women's needs regarding sexual preventive behaviours and unwanted pregnancies 

      Martín-Payo, Rubén; Fernández-Álvarez, María del Mar; González-Méndez, Xana; Muñoz-Mancisidor, Aránzazu; López de Dicastillo Sáinz de Murieta, Olga Upna Orcid (MDPI, 2024)   Artículo / Artikulua  OpenAccess
      Unwanted pregnancies are considered a public health problem that affects women¿s mental health and quality of life. The aim of this paper was to access university students¿ understanding and behaviours regarding unwanted ...
    • Youth leisure-time sedentary behavior questionnaire (YLSBQ): reliability and validity in Colombian University students 

      Atencio Osorio, Miguel Alejandro; Carrillo Arango, Hugo Alejandro; Correa Rodríguez, María; Rivera, Diego Upna Orcid; Castro Piñero, José; Ramírez Vélez, Robinson Upna Orcid (MDPI, 2021)   Artículo / Artikulua  OpenAccess
      Sedentary behavior (SB) is influenced by variations in social, cultural and economic contexts. This study assesses the test–retest reliability and validity of the Youth Leisure-time Sedentary Behavior Questionnaire (YLSBQ), ...
    • Youth with type 1 diabetes mellitus are more inactive and sedentary than apparently healthy peers: a systematic review and meta-analysis 

      Huerta Uribe, Nidia; Hormazábal Aguayo, Ignacio; Izquierdo Redín, Mikel; García Hermoso, Antonio (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      Aims: To conduct a meta-analysis of differences in physical activity, sedentary behaviour, and physical fitness between children and adolescents with type 1 diabetes and their healthy peers. Methods: The databases EMBASE, ...
    • El 'zaldiko' del Privilegio de la Unión: puntualizaciones y correcciones 

      Santazilia Salvador, Ekaitz Upna Orcid (Gobierno de Navarra. Institución Príncipe de Viana, 2019)   Artículo / Artikulua  OpenAccess
      El rey Carlos III promulgaba el Privilegio de la Unión de Pamplona el 8 de septiembre de 1423. En una copia de dicho privilegio puede verse la imagen de un caballico o zaldiko tocando la cornamusa. Así, la ...
    • Zaraitzueraren lekukotasunak XVIII. mende bukaeran: hiru testu zahar eta autore berri bat 

      Santazilia Salvador, Ekaitz Upna Orcid (Gobierno de Navarra. Institución Príncipe de Viana, 2016)   Artículo / Artikulua  OpenAccess
      En este trabajo hemos estudiado tres sermones escritos en el euskera de Salazar en el siglo xviii. No se hallan los tres en la misma situación, puesto que mientras uno es inédito, los otros dos ya habían sido publicados ...
    • Ze ba? eta ze bada? Baztan-Bidasoa inguruko gazteen hizkeran. Aldakuntza linguistikoa abian 

      Ibarra Murillo, Orreaga Upna Orcid (Gobierno de Navarra. Institución Príncipe de Viana, 2010)   Artículo / Artikulua  OpenAccess
      Se da cuenta en este artículo de una innovación lingüística que se utiliza en el habla coloquial de los jóvenes de la zona de Baztan-Bidasoa. Se trata, en concreto, del uso de la estructura Ze ba?, como interrogativo, ...
    • Zeolite synthesis from aluminum saline slag waste 

      Yoldi Sangüesa, María Upna Orcid; Fuentes Ordóñez, Edwin Gustavo Upna Orcid; Korili, Sophia A. Upna Orcid; Gil Bravo, Antonio Upna Orcid (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      This work describes the synthetic procedures developed to obtain zeolite X (NaX), zeolite A (LTA) and sodalite (SOD) using aluminum saline slag waste (AlSSW) as aluminum source in a two-step hydrothermal method involving ...
    • Zeolite synthesis from industrial wastes 

      Yoldi Sangüesa, María Upna Orcid; Fuentes Ordóñez, Edwin Gustavo Upna Orcid; Korili, Sophia A. Upna Orcid; Gil Bravo, Antonio Upna Orcid (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      Conventional synthesis conditions for each type of zeolite are tabulated and reported by the International Zeolite Association Structure Commission (IZA) and most of them are synthesized from commercial reagents, but they ...
    • Zernike-like systems in polygons and polygonal facets 

      Ferreira González, Chelo Upna; López García, José Luis Upna Orcid; Navarro, Rafael; Pérez Sinusía, Ester Upna Orcid (Optical Society of America, 2015)   Artículo / Artikulua  OpenAccess
      Zernike polynomials are commonly used to represent the wavefront phase on circular optical apertures, since they form a complete and orthonormal basis on the unit disk. In [Diaz et all, 2014] we introduced a new Zernike ...
    • Zero-loss switching in LLC resonant converters under discontinuous conduction mode: analysis and design methodology 

      Elizondo Martínez, David Upna Orcid; Barrios Rípodas, Ernesto Upna Orcid; Larequi, Íñigo; Ursúa Rubio, Alfredo Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      Many thriving applications where isolation is required, such as LED drivers, traction and EV fast charging, implement LLC resonant converters, particularly when voltage regulation is not required or an additional ...
    • Zero-power-consumption thermoelectric system to prevent overheating in solar collectors 

      Martínez Echeverri, Álvaro Upna Orcid; Astrain Ulibarrena, David Upna Orcid; Rodríguez García, Antonio Upna Orcid (Elsevier, 2014)   Artículo / Artikulua  OpenAccess
      Highly promoted by the European Union Climate and Energy Package for 2020, solar collectors stand out as the most promising alternative to meet water heating demands. One of the most limiting problems in these systems ...
    • Zigbee radio channel analysis in a complex vehicular environment [wireless corner] 

      Rajo-Iglesias, Eva; López Iturri, Peio Upna Orcid; Aguirre Gallego, Erik Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Gárate, Uxue; Falcone Lanas, Francisco Upna Orcid (IEEE, 2014)   Artículo / Artikulua  OpenAccess
      In this paper, the influence of topology and morphology of a particularly complex scenario for the deployment of ZigBee wireless sensor networks is analyzed. This complex scenario is a car. The existence of loss mechanisms ...
    • Zildozko Perutxeneko euskal predikuak (XIX. m.): aurkezpena eta ikerketaren lehen emaitzak 

      Santazilia Salvador, Ekaitz Upna Orcid (Diputación Foral de Guipuzcoa, 2022)   Artículo / Artikulua  OpenAccess
      Lan honetan Zildozko (Ezkabarte, Nafarroa) Perutxena etxetik ateratako xix. mendeko euskal sermoi-sorta aurkeztu dut, eta etorkizunean hura ikertzeko gidalerroak eman. Deskribatu ondoren, sakabanaturik egon den corpusa ...
    • Zirconia-supported 11-molybdovanadophosphoric acid catalysts: effect of the preparation method on their catalytic activity and selectivity 

      El Bakkali, Bouchra; Trautwein, Guido; Alcañiz Monge, Juan; Reinoso, Santiago Upna Orcid (Wiley, 2018)   Artículo / Artikulua  OpenAccess
      The oxidation of adamantane with hydrogen peroxide catalyzed by zirconia-supported 11-molybdovanadophosphoric acid is shown to be a suitable green route for the synthesis of adamantanol and adamantanone. This work evaluates ...
    • Zirconia-supported tungstophosphoric heteropolyacid as heterogeneous acid catalyst for biodiesel production 

      Alcañiz Monge, Juan; El Bakkali, Bouchra; Trautwein, Guido; Reinoso, Santiago Upna Orcid (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      A series of materials based on the immobilization of the 12-tungstophosphoric heteropolyacid over zirconia supports have been prepared and applied as heterogeneous acid catalysts in the esterification of palmitic acid with ...
    • Zn-Ti-Al layered double hydroxides synthesized from aluminum saline slag wastes as efficient drug adsorbents 

      Santamaría Arana, Leticia Upna Orcid; López Aizpún, María Upna; García Padial, Marcos; Vicente, Miguel Ángel; Korili, Sophia A. Upna Orcid; Gil Bravo, Antonio Upna Orcid (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      This work reports the synthesis of Zinc-Titanium-Aluminum (ZnTiAl) layered double hydroxides (LDH) with various proportions of Al[sbnd]Ti and a Zn/(Al[sbnd]Ti) molar ratio of 3:1 by the co-precipitation method. Two series, ...
    • Zoned fishnet lens antenna with reference phase for side lobe reduction 

      Pacheco-Peña, Víctor Upna Orcid; Navarro Cía, Miguel Upna Orcid; Orazbayev, Bakhtiyar Upna Orcid; Minin, Igor V.; Minin, Oleg V.; Beruete Díaz, Miguel Upna Orcid (IEEE, 2015)   Artículo / Artikulua  OpenAccess
      Reduction of first side lobe level and nulls in artificial fishnet metalenses is accomplished here by applying the reference phase concept along with the zoning technique. Higher focusing efficiency is achieved for a ...
    • Zoned near-zero refractive index fishnet lens antenna: steering millimeter waves 

      Pacheco-Peña, Víctor Upna Orcid; Orazbayev, Bakhtiyar Upna Orcid; Beaskoetxea Gartzia, Unai Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Navarro Cía, Miguel Upna Orcid (AIP Publishing, 2014)   Artículo / Artikulua  OpenAccess
      A zoned fishnet metamaterial lens is designed, fabricated, and experimentally demonstrated at millimeter wavelengths to work as a negative near-zero refractive index lens suitable for compact lens antenna configurations. ...

      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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