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    • Improved photocatalytic and antibacterial performance of Cr doped TiO2 nanoparticles 

      Gómez Polo, Cristina Upna Orcid; Larumbe Abuin, Silvia Upna; Gil Bravo, Antonio Upna Orcid; Muñoz Labiano, Delia Upna Orcid; Rodríguez Fernández, L.; Fernández Barquín, Luis; García-Prieto, Ana; Fernández-Gubieda, María Luisa; Muela, Alicia (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
      The effect of Cr and N doping in the adsorption capacity, photocatalytic properties and antibacterial response of TiO2 anatase nanoparticles is analyzed. The nanoparticles (N-TiO2, Cr-TiO2 and Cr/N-TiO2) were prepared by ...

    • Improvement of the adsorption properties of an activated carbon coated by titanium dioxide for the removal of emerging contaminants 

      Taoufik, Nawal; Elmchaouri, Abdellah; Anouar, Fatna; Korili, Sophia A. Upna Orcid; Gil Bravo, Antonio Upna Orcid (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      Three activated carbon coated titanium dioxide composites are evaluated as adsorbents for the removal of three pharmaceutical compounds: clofibric, gallic and salicylic acids from aqueous solutions. These composite materials ...

    • Improvement of the tribocorrosion properties of cemented carbide (WC-Tic-Co) samples with PVD coating 

      García Lorente, José Antonio Upna Orcid; Claver Alba, Adrián Upna Orcid; Marques, Mikel; Almandoz Sánchez, Eluxka Upna Orcid; Fernández de Ara, Jonathan; Palacio, José F.; Azkona, Ibon (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      This study aims to investigate the improvement of the tribocorrosion properties of WC-TiC-Co substrates by coating them with hard coatings such as AlCrSiN using cathodic arc deposition. WC-TiC-Co is commonly used in the ...

    • Improving the quality of satellite imagery based on ground-truth data from rain gauge stations 

      Militino, Ana F. Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid; Pérez Goya, Unai Upna Orcid (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      Multitemporal imagery is by and large geometrically and radiometrically accurate, but the residual noise arising from removal clouds and other atmospheric and electronic effects can produce outliers that must be mitigated ...

    • In situ synthesis of gold nanoparticles in layer-b y-layer polymeric coatings for the fabrication of optical fiber sensors 

      Martínez Hernández, María Elena Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Rivero Fuente, Pedro J. Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      A new method is proposed to tune the interferometric response of wavelength-based optical fiber sensors. Using the nanoparticle in situ synthesis (ISS) technique, it is possible to synthesize gold nanoparticles (AuNPs) ...

    • In situ synthesis of SERS-active Au@POM nanostructures in a microfluidic device for real-time detection of water pollutants 

      Lafuente, Marta; Pellejero, Ismael Upna Orcid; Clemente, Alberto; Urbiztondo, Miguel A.; Mallada, Reyes; Reinoso, Santiago Upna Orcid; Pina, María del Pilar; Gandía Pascual, Luis Upna Orcid (ACS, 2020)   Artículo / Artikulua  OpenAccess
      We present a simple, versatile and low-cost approach for the preparation of SERS-active regions within a microfluidic channel 50 cm in length. The approach involves the UV-light-driven formation of polyoxometalate-decorated ...

    • In spatio-temporal disease mapping models, identifiability constraints affect PQL and INLA results 

      Goicoa Mangado, Tomás; Adin Urtasun, Aritz Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid; Hodges, James S. (Springer, 2018)   Artículo / Artikulua  OpenAccess
      Disease mapping studies the distribution of relative risks or rates in space and time, and typically relies on generalized linear mixed models (GLMMs) including fixed effects and spatial, temporal, and spatio-temporal ...

    • Induction of radiata pine somatic embryogenesis at high temperatures provokes a long-term decrease in DNA methylation/hydroxymethylation and differential expression of stress-related genes 

      Castander Olarieta, Ander; Pereira, Catia; Sales, Ester; Meijón, Mónica; Arrillaga, Isabel; Goicoa Mangado, Tomás Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid; Cañal, María Jesús; Moncaleán, Paloma; Montalbán, Itziar A. (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      Based on the hypothesis that embryo development is a crucial stage for the formation of stable epigenetic marks that could modulate the behaviour of the resulting plants, in this study, radiata pine somatic embryogenesis ...

    • Influence of bi content on the temperature of the formation of the hard magnetic MnBi phase: simultaneous irreversible drop of resistance 

      Vergara Platero, José Upna Orcid; Favieres Ruiz, Cristina Upna Orcid; Madurga Pérez, Vicente Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      Pulsed laser-deposited (PLD) MnBi films were fabricated by alternating deposition of Mn and Bi layers. In order to obtain the ferromagnetic MnBi phase, heat treatments were performed on the samples. Simultaneously, the ...

    • Influence of defects on the irreversible phase transition in the Fe-Pd doped with Co and Mn 

      Bonifacich, Federico Guillermo; Lambri, Osvaldo Agustín; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Recarte Callado, Vicente Upna Orcid; Sánchez-Alarcos Gómez, Vicente Upna Orcid (Rede Latino-Americana de Materiais, 2018)   Artículo / Artikulua  OpenAccess
      The appearance of BCT martensite in Fe-Pd-based ferromagnetic shape memory alloys, which develops at lower temperatures than the thermoelastic martensitic transition, deteriorates the shape memory properties. In a previous ...

    • Influence of structural defects on the properties of metamagnetic shape memory alloys 

      Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Sánchez-Alarcos Gómez, Vicente Upna Orcid; Recarte Callado, Vicente Upna Orcid; Lambri, Osvaldo Agustín; López García, Javier Upna (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      The production of µ-particles of Metamagnetic Shape Memory Alloys by crushing and subsequent ball milling process has been analyzed. The high energy involved in the milling process induces large internal stresses and high ...

    • Influence of the geometry on the performance of GMI in meander configuration 

      Beato López, Juan Jesús Upna Orcid; Lete, N.; García-Arribas, A.; Gómez Polo, Cristina Upna Orcid (Elsevier, 2022)   Artículo / Artikulua
      The effect of geometry on Giant Magnetoimpedance effect (GMI) in a meander structure composed of three amorphous magnetic ribbons ((Co0.94 Fe0.06)72,5 Si12.5 B15; 20 mm length) connected electrically in series is analyzed. ...

    • Innovative catalyst integration on transparent silicone microreactors for photocatalytic applications 

      Pellejero, Ismael Upna Orcid; Clemente, Alberto; Reinoso, Santiago Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Navajas León, Alberto Upna Orcid; Vesperinas Oroz, José Javier; Urbiztondo, Miguel A.; Gandía Pascual, Luis Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      Reproducible and controllable incorporation and immobilization of catalysts and other active particles onto silicone microreactor channels is still challenging. In this work, we present an innovative fabrication protocol ...

    • Innovative flow-through reaction system for the sustainable production of phenolic monomers from lignocellulose catalyzed by supported Mo2C 

      Maisterra Udi, Maitane Upna; Atienza Martínez, María Upna Orcid; Hablich Alvarracin, Karina Lissett Upna; Moreira, Rui; Martínez Merino, Víctor Upna Orcid; Gandía Pascual, Luis Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Bimbela Serrano, Fernando Upna Orcid (Wiley, 2024)   Artículo / Artikulua  OpenAccess
      Molybdenum carbide supported on activated carbon (β-Mo2C/AC) has been tested as catalyst in the reductive catalytic fractionation (RCF) of lignocellulosic biomass both in batch and in Flow-Through (FT) reaction systems. ...

    • Inorganic–organic hybrids based on sepiolite as efficient adsorbents of caffeine and glyphosate pollutants 

      Baldan Junior, Hugo; Silva Grazziano, Eliane da; Saltarelli, Michelle; Crispim, Denise; Nassar, Eduardo J.; Trujillano, Raquel; Rives, Vicente; Vicente, Miguel Ángel; Gil Bravo, Antonio Upna Orcid; Korili, Sophia A. Upna Orcid; Faria, Emerson H. de; Ciuffi, Katia J. (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      Sepiolite clay mineral was functionalized with (3-chloropropyl)triethoxysilane (ClPTES) or 3-[tri(ethoxy/methoxy)silyl] propylurea (TEMSPU) alkoxides and tested as adsorbent for herbicide glyphosate and also of caffeine, ...

    • Insight into (electro)magnetic interactions within facet-engineered BaFe 12 O 19 /TiO 2 magnetic photocatalysts 

      Dudziak, Szymon; Gómez Polo, Cristina Upna Orcid; Karczewski, Jakub; Nikiforow, Kostiantyn; Zielinska-Jurek, Anna (American Chemical Society, 2023)   Artículo / Artikulua  OpenAccess
      A series of facet-engineered TiO2/BaFe12O19 composites were synthesized through hydrothermal growth of both phases and subsequent deposition of the different, faceted TiO2 nanoparticles onto BaFe12O19 microplates. The ...

    • The interval-valued Choquet integral based on admissible permutations 

      Paternain Dallo, Daniel Upna Orcid; Miguel Turullols, Laura de Upna Orcid; Ochoa Lezaun, Gustavo Upna Orcid; Lizasoain Iriso, María Inmaculada Upna Orcid; Mesiar, Radko; Bustince Sola, Humberto Upna Orcid (IEEE, 2018)   Artículo / Artikulua  OpenAccess
      Aggregation or fusion of interval data is not a trivial task, since the necessity of arranging data arises in many aggregation functions, such as OWA operators or the Choquet integral. Some arranging procedures have been ...

    • Isolation of the elusive heptavanadate anion with trisalkoxide ligands 

      Fernández-Navarro, Leticia; Nunes-Collado, Aitor; Artetxe, Beñat; Ruiz-Bilbao, Estíbaliz; San Felices, Leire; Reinoso, Santiago Upna Orcid; San José Wéry, Ana; Gutiérrez Zorrilla, Juan M. (ACS, 2021)   Artículo / Artikulua  OpenAccess
      The unprecedented heptavanadate cluster has been isolated from reactions between trisalkoxide ligands and vanadatein water at pH = 2 as a series of alkylammonium [HxV7O18(H2O)((OCH2)3CR)](4−x)‑salts (1−3,R=CH2OH;4,R=CH3). ...

    • Kinetic analysis and CFD simulations of the photocatalytic production of hydrogen in silicone microreactors from water-ethanol mixtures 

      Castedo, Alejandra; Uriz Doray, Irantzu Upna Orcid; Soler, Lluís; Gandía Pascual, Luis Upna Orcid; Llorca Piqué, Jordi (Elsevier, 2017)   Artículo / Artikulua  OpenAccess
      Silicone microreactors containing microchannels of 500 μm width in a single or triple stack configuration have been manufactured, coated with an Au/TiO2 photocatalyst and tested for the photocatalytic production of hydrogen ...

    • Kinetics of the acid-catalyzed hydrolysis of tetraethoxysilane (TEOS) by 29Si NMR spectroscopy and mathematical modeling 

      Echeverría Morrás, Jesús Upna Orcid; Moriones Jiménez, Paula Upna Orcid; Arzamendi Manterola, María Cruz Upna Orcid; Garrido Segovia, Julián José Upna Orcid; Gil Idoate, María José Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Martínez Merino, Víctor Upna Orcid (Springer, 2018)   Artículo / Artikulua  OpenAccess
      Tetraethoxysilane (TEOS) is widely used to synthesize siliceous material by the sol–gel process. However, there is still some disagreement about the nature of the limiting step in the hydrolysis and condensation reactions. ...
      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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