Now showing items 2-21 of 27

    • CFD-based comparison study of a new flow diverting stent and commercially-available ones for the treatment of cerebral aneurysms 

      Catalán Echeverría, Borja; Kelly, Michael E.; Peeling, Lissa; Bergstrom, Donald; Chen, Xiongbiao; Malvè, Mauro Upna (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      Flow-diverting stents (FDSs) show considerable promise for the treatment of cerebral aneurysms by diverting blood flow away from the aneurysmal sacs, however, post-treatment complications such as failure of occlusion and ...
    • A comparative study of multifunctional coatings based on electrospun fibers with incorporated ZnO nanoparticles 

      Rivero Fuente, Pedro J. Upna; Iribarren Zabalegui, Álvaro; Larumbe Abuin, Silvia Upna; Palacio, José; Rodríguez Trías, Rafael Upna (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      In this work, polymeric fibers of polystyrene (PS) with incorporated ZnO nanoparticles have been deposited onto an aluminum alloy substrate (6061T6) by using the electrospinning technique. In order to optimize the deposition ...
    • Detection of minced lamb and beef fraud using NIR spectroscopy 

      López-Maestresalas, Ainara Upna; Insausti Barrenetxea, Kizkitza Upna; Jarén Ceballos, Carmen Upna; Pérez Roncal, Claudia Upna; Urrutia Vera, Olaia Upna; Beriain Apesteguía, María José Upna; Arazuri Garín, Silvia Upna (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      The aim of this work was to investigate the feasibility of near-infrared spectroscopy (NIRS), combined with chemometric techniques, to detect fraud in minced lamb and beef mixed with other types of meats. For this, 40 ...
    • Determinación de las curvas IDF en Igueldo-San Sebastián. Comparación de diferentes métodos 

      López Rodríguez, José Javier Upna; Delgado Zabala, Oihane Upna; Campo-Bescós, Miguel Upna (Universidad Politécnica de Valencia, 2018)   Artículo / Artikulua  OpenAccess
      Las curvas de intensidad-duración-frecuencia (IDF) son una herramienta fundamental en ingeniería hidrológica. Se ha partido de la serie de precipitación de 88 años registrada cada diez minutos en la estación meteorológica ...
    • 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 Upna; Hernández García, Iker Upna; Campo-Bescós, Miguel 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. ...
    • Frequency domain design of a series structure of robust controllers for multi-input single-output systems 

      Gil Martínez, Montserrat; Rico Azagra, Javier; Elso Torralba, Jorge Upna (Hindawi, 2018)   Artículo / Artikulua  OpenAccess
      The regulation of a disturbed output can be improved when several manipulated inputs are available. A popular choice in these cases is the series control scheme, characterized by (1) a sequential intervention of loops and ...
    • Functionalized electrospun fibers for the design of novel hydrophobic and anticorrosive surfaces 

      Rivero Fuente, Pedro J. Upna; Yurrita Silanes, David; Berlanga Labari, Carlos Upna; Palacio, José; Rodríguez Trías, Rafael Upna (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      In this work, a novel coating was deposited on aluminum alloy samples by using a combination of electrospinning and chemical vapor deposition (CVD-silanization) techniques in order to create a functionalized film with an ...
    • Grey water footprint as an indicator for diffuse nitrogen pollution: the case of Navarra, Spain 

      Martínez Aldaya, Maite Upna; Corina I., Rodríguez; Fernández Poulussen, Álex; Merchán Elena, Daniel Upna; Beriain Apesteguía, María José Upna; Llamas, Ramón (Elsevier, 2019)   Artículo / Artikulua
      Nitrogen is an essential element for plant growth, while its application and associated pollution is a worldwide concern. Generally, diffuse source pollution and its impacts on ecosystem health are difficult to monitor and ...
    • Heat pipes thermal performance for a reversible thermoelectric cooler-heat pump for a nZEB 

      Aranguren Garacochea, Patricia Upna; Díaz de Garayo, Sergio; Martínez Echeverri, Álvaro Upna; Araiz Vega, Miguel Upna; Astrain Ulibarrena, David Upna (Elsevier, 2019)   Artículo / Artikulua
      The nZEB standards reduce the energy demand of these buildings to a minimum, obtaining this little energy from renewable resources. Taking these aspect into consideration, a thermoelectric cooler-heat pump is proposed to ...
    • Highway paving in the southwestern Amazon alters long-term trends and drivers of regional vegetation dynamics 

      Klarenberg, Geraldine; Muñoz Carpena, Rafael Upna; Campo-Bescós, Miguel Upna; Perz, Steve G. (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      Infrastructure development, specifically road paving, contributes socio-economic benefits to society worldwide. However, detrimental environmental effects of road paving have been documented, most notably increased ...
    • Holographic acoustic tweezers 

      Marzo Pérez, Asier Upna; Drinkwater, Bruce W. (National Academy of Sciences, 2019)   Artículo / Artikulua  OpenAccess
      Acoustic tweezers use sound radiation forces to manipulate matter without contact. They provide unique characteristics compared with the more established optical tweezers, such as higher trapping forces per unit input power ...
    • Hydrophobic and corrosion behavior of sol-gel hybrid coatings based on the combination of TiO2 NPs and fluorinated chains for aluminum alloys protection 

      Rivero Fuente, Pedro J. Upna; Maeztu Redin, Juan Deyo; Berlanga Labari, Carlos Upna; Miguel, Adrián; Palacio, José; Rodríguez Trías, Rafael Upna (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      In this work, layers of a sol-gel hybrid matrix doped with metal oxide nanoparticles (TiO2 NPs) have been deposited on flat samples of AA6061-T6 aluminum alloy using the dip-coating technique, with the aim of obtaining ...
    • Hyperspectral imaging to assess the presence of powdery mildew (Erysiphe necator) in cv. Carignan Noir grapevine bunches 

      Pérez Roncal, Claudia; López Maestresalas, Ainara Upna; López Molina, Carlos Upna; Jarén Ceballos, Carmen Upna; Urrestarazu Vidart, Jorge Upna; Santesteban García, Gonzaga Upna; Arazuri Garín, Silvia Upna (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      Powdery mildew is a worldwide major fungal disease for grapevine, which adversely affects both crop yield and produce quality. Disease identification is based on visible signs of a pathogen once the plant has already been ...
    • Hyperspectral imaging using notions from type-2 fuzzy sets 

      López Maestresalas, Ainara; Miguel Turullols, Laura de Upna; López Molina, Carlos Upna; Arazuri Garín, Silvia Upna; Bustince Sola, Humberto Upna; Jarén Ceballos, Carmen Upna (Springer, 2019)   Artículo / Artikulua  OpenAccess
      Fuzzy set theory has developed a prolific armamentarium of mathematical tools for each of the topics that has fallen within its scope. One of such topics is data comparison, for which a range of operators has been presented ...
    • Investigation of direct contact membrane distillation coupling with a concentrated photovoltaic solar system 

      Krnac, Andrew; Araiz Vega, Miguel Upna; Rana, Sohel; Velardo, Jason; Date, Abhijit (Elsevier, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The scarcity of fresh water amongst a growing population is an impending global issue, which must be addressed by utilizing renewable energy sources. A Concentrated Photovoltaic (CPV) and Direct Contact Membrane Distillation ...
    • The law of O-conditionality for fuzzy implications constructed from overlap and grouping functions 

      Pereira Dimuro, Graçaliz Upna; Bedregal, Benjamin; Fernández Fernández, Francisco Javier Upna; Sesma Sara, Mikel Upna; Pintor Borobia, Jesús María Upna; Bustince Sola, Humberto Upna (Elsevier, 2019)   Artículo / Artikulua
      Overlap and grouping functions are special kinds of non necessarily associative aggregation operators proposed for many applications, mainly when the associativity property is not strongly required. The classes of overlap ...
    • Layer-by-layer nano-assembly: a powerful tool for optical fiber sensing applications 

      Rivero Fuente, Pedro J. Upna; Goicoechea Fernández, Javier Upna; Arregui San Martín, Francisco Javier Upna (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      The ability to tune the composition of nanostructured thin films is a hot topic for the design of functional coatings with advanced properties for sensing applications. The control of the structure at the nanoscale level ...
    • Learning fuzzy measures for aggregation in fuzzy rule-based models 

      Saleh, Emran; Valls Aida; Moreno, Antonio Upna; Romero-Aroca, Pedro; Torra, Vicenç; Bustince Sola, Humberto Upna (Springer Verlag, 2018)   Contribución a congreso / Biltzarrerako ekarpena
      Fuzzy measures are used to express background knowledge of the information sources. In fuzzy rule-based models, the rule confidence gives an important information about the final classes and their relevance. This work ...
    • Microstructured optical fiber sensor for soil moisture measurements 

      López Aldaba, Aitor Upna; López Torres, Diego Upna; Campo-Bescós, Miguel Upna; López Rodríguez, José Javier Upna; Yerro Lizarazu, David; Elosúa Aguado, César Upna; Arregui San Martín, Francisco Javier Upna; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel Upna (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A discrete sensor based on a Sn0₂-FP (Fabry-Pérot) cavity is presented and characterized in real soil conditions. Results are compared, for the first time to our knowledge, with a commercial capacitive sensor and gravimetric ...
    • Modeling the flow and mass transport in a mechanically stimulated parametric porous scaffold under fluid-structure interaction approach 

      Malvè, Mauro Upna; Bergstrom, Donald; Chen, Xiongbiao (Elsevier, 2018)   Artículo / Artikulua
      Tissue engineering scaffolds combined with bioreactors are used to cultivate cells with the aim of reproducing tissues and organs. The cultivating process is critical due to the delicate in-vitro environment in which the ...