Now showing items 66-80 of 80

    • Phytochemicals determination and classification in purple and red fleshed potato tubers by analytical methods and near infrared spectroscopy 

      Tierno, Roberto; López-Maestresalas, Ainara Upna; Riga, Patrick; Arazuri Garín, Silvia Upna; Jarén Ceballos, Carmen Upna; Ruiz de Galarreta, José Ignacio Upna (Wiley, 2016)   Artículo / Artikulua  OpenAccess
      BACKGROUND: Over the last two decades, the attractive colours and shapes of pigmented tubers and the increasing concern about the relationship between nutrition and health have contributed to the expansion of their ...
    • Prediction of main potato compounds by NIRS 

      López-Maestresalas, Ainara Upna; Pérez Roncal, Claudia Upna; Tierno, Roberto; Arazuri Garín, Silvia Upna; Ruiz de Galarreta, José Ignacio Upna; Jarén Ceballos, Carmen Upna (AIDIC, 2017)   Artículo / Artikulua  OpenAccess
      Potato (Solanum tuberosum, L) compounds are generally determined by analytical methods including gasliquid chromatography (GLC), HPLC and UV-VIS spectrophotometry. These methods require a lot of time and are destructive. ...
    • Progress in gully erosion research: IV International Symposium on Gully Erosion 

      Casalí Sarasíbar, Javier Upna; Giménez Díaz, Rafael Upna (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Libro / Liburua  OpenAccess
      The classic forms of water erosion of the soil comprise sheet, rill, and gully erosion. According to the concept most generalized, in sheet erosion, thin layers of material are uniformly removed from the soil surface due ...
    • Project management in development cooperation. Non-governmental organizations 

      Montes Guerra, Maricela I.; Romero de Miguel, Aida; Pérez Ezcurdia, Amaya Upna; Gimena Ramos, Faustino Upna; Díez Silva, H. Mauricio (Universidad Nacional de Colombia, 2015)   Artículo / Artikulua  OpenAccess
      Este artículo analiza la adopción de prácticas propias de la gestión de proyectos en las ONG destinadas a la cooperación para el desarrollo, así como su influencia en la ejecución y el impacto de la aplicación de metodologías, ...
    • Residual stresses with time-independent cyclic plasticity in finite element analysis of welded joints 

      Lostado Lorza, Rubén; Corral Bobadilla, Marina; Martínez Calvo, María Ángeles; Villanueva Roldán, Pedro Upna (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      Due to the intense concentration of heat in a reduced area when Gas Metal Arc Welding (GMAW) is used to join mechanical components, the regions near the weld bead are subjected to severe thermal cycles. Firstly, the region ...
    • A review of the application of near-infrared spectroscopy for the analysis of potatoes 

      López-Maestresalas, Ainara Upna; Arazuri Garín, Silvia Upna; García Ruiz, Ignacio Upna; Mangado Ederra, Jesús Upna; Jarén Ceballos, Carmen Upna (American Chemical Society, 2013)   Artículo / Artikulua  OpenAccess
      Potato (Solanum tuberosum L.) is one of the most important crops in the world being considered as a staple food in many developing countries. The potato industry like other vegetable and fruit industries is subject to the ...
    • Runoff, nutrients, sediment and salt yields in an irrigated watershed in southern Navarre (Spain) 

      Merchán Elena, Daniel Upna; Casalí Sarasíbar, Javier Upna; Valle de Lersundi, Jokin del; Campo-Bescós, Miguel Upna; Giménez Díaz, Rafael Upna; Preciado, Beatriz; Lafarga, Alberto (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      The environmental impact of irrigated agriculture on water quality was assessed in Landazuria watershed (Navarre, northeast Spain), a 479.5 ha watershed with 53% of irrigated agricultural land. In the framework of a long-term ...
    • Sulfate soils stabilization with magnesium-based binders 

      Seco Meneses, Andrés Upna; Miqueleiz, Luis; Prieto Cobo, Eduardo Upna; Marcelino Sádaba, Sara Upna; García, Beñat; Urmeneta, Pablo (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      Sulfate soils' stabilization is a very interesting subject with technical, economic and environmental implications. The difficulty of their stabilization is due to the fact that the usual stabilizer additives are based ...
    • Sustainable unfired bricks manufacturing from construction anddemolition wastes 

      Seco Meneses, Andrés Upna; Omer, Joshua; Marcelino Sádaba, Sara Upna; Espuelas Zuazu, Sandra Upna; Prieto Cobo, Eduardo Upna (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      The management of construction and demolition wastes is a huge challenge for most Governments. Thegreatest component of such wastes is concrete and masonry fragments or remains. Among the most com-mon approaches to ...
    • Synthetic images for evaluating topographic correction algorithm 

      Sola Torralba, Ion Upna; González de Audícana Amenábar, María Upna; Álvarez-Mozos, Jesús Upna; Torres Escribano, José Luis Upna (IEEE, 2013)   Artículo / Artikulua  OpenAccess
      In the last years, many topographic correction (TOC) methods have been proposed to correct the illumination differences between the areas observed by optical remote sensors. Although the available number of TOC methods is ...
    • Technical and environmental characterization of hydraulic and alkaline binders 

      Espuelas Zuazu, Sandra Upna; Echeverría, Angel María; Marcelino Sádaba, Sara Upna; Prieto Cobo, Eduardo Upna; Seco Meneses, Andrés Upna (Elsevier, 2018)   Artículo / Artikulua
      Portland cement is a widely used binder in construction and building applications because of its good properties. Despite its convenience as construction material, the social demands and policies trends are requesting a ...
    • Tipología, tipometría y técnicas escultóricas utilizadas en las estelas de Navarra 

      Ukar Muruzábal, Jesús Upna (Gobierno de Navarra. Institución Príncipe de Viana, 1993)   Artículo / Artikulua  OpenAccess
      Este trabajo pretende diferenciar formalmente una serie de modelos de estelas discoideas, en base a la estructura del disco, del pie, del canto y de las relaciones entre ellos.
    • Understanding top management's decision-making on implementing project management systems: an exploratory study 

      Arraiza Irujo, Juan; Pérez Ezcurdia, Amaya Upna (Mechanical Engineering Faculty in Slavonski Brod, 2017)   Artículo / Artikulua  OpenAccess
      Top Management’s motivation to invest in improving their organisation’s Project Management processes and practices is arguably an important under-researched phenomenon. In this paper we present the results of an exploratory ...
    • Validation of a simplified model to generate multispectral synthetic images 

      Sola Torralba, Ion Upna; González de Audícana Amenábar, María Upna; Álvarez-Mozos, Jesús Upna (MDPI, 2015)   Artículo / Artikulua  OpenAccess
      A new procedure to assess the quality of topographic correction (TOC) algorithms applied to remote sensing imagery was previously proposed by the authors. This procedure was based on a model that simulated synthetic scenes, ...
    • Watering or buffering? Runoff and sediment pollution control from furrow irrigated fields in arid environments 

      Campo-Bescós, Miguel Upna; Muñoz Carpena, Rafael Upna; Kiker, Gregory A.; Bodah, Brian W.; Ullman, Jeffrey L. (Elsevier, 2015)   Artículo / Artikulua  OpenAccess
      Surface irrigated agriculture in arid and semi-arid regions contributes to downstream environmental degradation. Changes in irrigation system operational scenarios (ISOS) can represent an economic alternative to reduce ...