• 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. ...
    • Large-scale unsupervised spatio-temporal semantic analysis of vast regions from satellite images sequences 

      Echegoyen Arruti, Carlos; Pérez, Aritz; Santafé Rodrigo, Guzmán Upna Orcid; Pérez-Goya, Unai Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid (Springer, 2024)   Artículo / Artikulua  OpenAccess
      Temporal sequences of satellite images constitute a highly valuable and abundant resource for analyzing regions of interest. However, the automatic acquisition of knowledge on a large scale is a challenging task due to ...
    • Layer-by-layer nano-assembly: a powerful tool for optical fiber sensing applications 

      Rivero Fuente, Pedro J. Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (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 ...
    • Layered double hydroxides for CO2 adsorption at moderate temperatures: synthesis and amelioration strategies 

      Santamaría Arana, Leticia Upna Orcid; Korili, Sophia A. Upna Orcid; Gil Bravo, Antonio Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      Curving the CO2 atmospheric levels is one of the challenges of this century, given its direct impact on climate change. Of the several strategies of CO2 capture and storage, sorption-enhanced water–gas shift (SEWGS) ...
    • A layered titanosilicate AM-4 as a novel catalyst for the synthesis of 1-methoxy-2-propanole from propylene oxide and methanol 

      Timofeeva, Maria N.; Kurchenko, Julia V.; Kalashnikova, Galina O.; Panchenko, Valentina N.; Nikolaev, Anatoliy I.; Gil Bravo, Antonio Upna Orcid (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      In this paper we report for the first time the catalytic properties of the titanosilicate AM-4 in the synthesis of 1-methoxy-2-propanol (PGME) from methanol and propylene oxide (PO). PGME is widely used as a pollution-free ...
    • Life cycle assessment of power-to-methane systems with CO2 supplied by the chemical looping combustion of biomass 

      Navajas León, Alberto Upna Orcid; Mendiara, Teresa; Gandía Pascual, Luis Upna Orcid; Abad, Alberto; García Labiano, Francisco; Diego, Luis F. de (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      Power-to-methane (PtM) systems may allow fluctuations in the renewable energy supply to be smoothed out by storing surplus energy in the form of methane. These systems work by combining the hydrogen produced by electrolysis ...
    • Lipid status of A2780 ovarian cancer cells after treatment with ruthenium complex modified with carbon dot nanocarriers: a multimodal SR-FTIR spectroscopy and MALDI TOF Mass Spectrometry Study MALDI TOF Mass Spectrometry Study 

      Nesic, Maja D.; Dučić, Tanja; Algarra González, Manuel; Popovic, Iva; Stepic, Milutin; Gonçalves, Mara; Petkovic, Marijana (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      In the last decade, targeting membrane lipids in cancer cells has been a promising approach that deserves attention in the field of anticancer drug development. To get a comprehensive understanding of the effect of the ...
    • Lipschitz algebras and Lipschitz-Free spaces over unbounded metric spaces 

      Albiac Alesanco, Fernando José Upna Orcid; Ansorena, José L.; Cúth, Marek; Doucha, Michal (Oxford University Press, 2021)   Artículo / Artikulua  OpenAccess
      We investigate a way to turn an arbitrary (usually, unbounded) metric space M into a bounded metric space B in such a way that the corresponding Lipschitz-free spaces F(M) and F(B) are isomorphic. The construction we provide ...
    • Lipschitz free p-spaces for 0 < p < 1 

      Albiac Alesanco, Fernando José Upna Orcid; Ansorena, José L.; Cúth, Marek; Doucha, Michal (SpringerHebrew University Magnes Press, 2020)   Artículo / Artikulua  OpenAccess
      This paper initiates the study of the structure of a new class of p-Banach spaces, 0 <p < 1, namely the Lipschitz free p-spaces (alternatively called Arens—Eells p-spaces) Fp(M) over p-metric spaces. We systematically ...
    • Lipschitz free spaces isomorphic to their infinite sums and geometric applications 

      Albiac Alesanco, Fernando José Upna Orcid; Ansorena, José L.; Cúth, Marek; Doucha, Michal (American Mathematical Society, 2021)   Artículo / Artikulua  OpenAccess
      We find general conditions under which Lipschitz-free spaces over metric spaces are isomorphic to their infinite direct _1-sum and exhibit several applications. As examples of such applications we have that Lipschitz-free ...
    • Locally adaptive change-point detection (LACPD) with applications to environmental changes 

      Moradi, Mohammad Mehdi Upna Orcid; Montesino San Martín, Manuel Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid; Militino, Ana F. Upna Orcid (Springer, 2021)   Artículo / Artikulua  OpenAccess
      We propose an adaptive-sliding-window approach (LACPD) for the problem of change-point detection in a set of time-ordered observations. The proposed method is combined with sub-sampling techniques to compensate for the ...
    • Luminance calibration of a full sky HDR imaging system using sky scanner measurements 

      García Ruiz, Ignacio Upna Orcid; Sáenz Gamasa, Carlos Upna Orcid; Hernández Salueña, Begoña Upna Orcid; García Santos, Rafael; Torres Escribano, José Luis Upna Orcid (Solar Energy Society, 2022)   Artículo / Artikulua  OpenAccess
      A full sky High Dynamic Range imaging system, based on a Single-Lens Reflex camera with a fisheye lens, has been constructed and calibrated with a sky scanner luminance meter. The method considers the geometrical, spectral, ...
    • M(II)-Al-Fe layered double hydroxides synthesized from aluminum saline slag wastes and catalytic performance on cyclooctene oxidation 

      Santamaría Arana, Leticia Upna Orcid; Oliveira-Garcia, L.; Faria, Emerson H. de; Ciuffi, Katia J.; Vicente, Miguel Ángel; Korili, Sophia A. Upna Orcid; Gil Bravo, Antonio Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      Aluminum was extracted from saline slags via an alkaline method and employed in the synthesis of Layered Double Hydroxides (LDH) with various M2+ cations (Co, Mg, Ni and Zn), while Al and Fe were the M3+ cations, using the ...
    • Machine learning procedures for daily interpolation of rainfall in Navarre (Spain) 

      Militino, Ana F. Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid; Pérez Goya, Unai Upna Orcid (Springer, 2023)   Capítulo de libro / Liburuen kapitulua
      Kriging is by far the most well known and widely used statistical method for interpolating data in spatial random fields. The main reason is that it provides the best linear unbiased predictor and it is an exact interpolator ...
    • Magnetic behavior in commercial iron-silicon alloys controlled by the dislocation dynamics at temperatures below 420 K 

      Lambri, Osvaldo Agustín; Weidenfeller, B.; Bonifacich, Federico Guillermo; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Cuello, G.J.; Weidenfeller, L.; Recarte Callado, Vicente Upna Orcid; Zelada, G. I.; Riehemann, W. (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
      A decrease of the temperature dependent coercive forces up to around 370 K is discovered in iron silicon alloys, both in quenched samples and in samples which were previously thermally treated to achieve the highest magnetic ...
    • Magnetic binary encoding system based on 3D printing and GMI detection prototype 

      Beato López, Juan Jesús Upna Orcid; Algueta-Miguel, Jose M. Upna Orcid; Galarreta Rodríguez, Itziar; López Ortega, Alberto Upna Orcid; Garayo Urabayen, Eneko Upna Orcid; Gómez Polo, Cristina Upna Orcid; Aresti Bartolomé, Maite; Soria Picón, Eneko; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      In this work, the feasibility of a magnetic binary encoding system using 3D printing technology is analyzed. The study has a double interest, that is, the possibility of printing a 3D piece that contains the codified ...
    • Magnetic carbon Fe3O4 nanocomposites synthesized via magnetic induction heating 

      Cervera Gabalda, Laura María Upna; Gómez Polo, Cristina Upna Orcid (Springer Nature, 2023)   Artículo / Artikulua  OpenAccess
      Magnetic Induction Heating (MIH) of magnetite nanoparticles is employed as a novel synthesis procedure of carbon based magnetic nanocomposites. Magnetic nanoparticles (Fe3O4) and fructose (1:2 weight ratio) were mechanically ...
    • Magnetic domain configurations of pulsed laser deposited MnBi hard magnetic films 

      Madurga Pérez, Vicente Upna Orcid; Favieres Ruiz, Cristina Upna Orcid; Vergara Platero, José Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      Hard magnetic MnBi films were obtained by appropriate heat treatments of pulsed laser deposited (PLD) (Bi/Mn) films. X-ray diffraction patterns indicated a slight texture of MnBi crystallites and magnetometry measurements ...
    • Magnetic Fe/Fe3C@C nanoadsorbents for efficient Cr (VI) removal 

      Cervera Gabalda, Laura María Upna; Gómez Polo, Cristina Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      Magnetic carbon nanocomposites (α-Fe/Fe3C@C) synthesized employing fructose and Fe3O4 magnetite nanoparticles as the carbon and iron precursors, respectively, are analyzed and applied for the removal of Cr (VI). Initial ...

      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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