Recent Submissions

  • Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes 

    Pereira, Priscila Martins; Ferreira, Breno Freitas; Oliveira, Nathalia Paula; Gil Bravo, Antonio Upna Orcid; Korili, Sophia A. Upna (MDPI, 2018)   Artículo / Artikulua  OpenAccess
    The present work reports the synthesis of zeolites from two metakaolins, one derived from the white kaolin and the other derived from the red kaolin, found in a deposit in the city of São Simão (Brazil). The metakaolins ...
  • 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 ...
  • Catalytic hydroprocessing of lignin β-O-4 ether bond model compound phenethyl phenyl ether over ruthenium catalysts 

    Gómez Monedero, B.; Faria, J.; Bimbela Serrano, Fernando; Ruiz, M. P. (Springer, 2017)   Artículo / Artikulua  OpenAccess
    The catalytic hydroprocessing of phenethyl phenyl ether (PPE), a model compound of one of the most significant ether linkages within lignin structure, β-O-4, has been studied. Reactions were carried out using two ruthenium-based ...
  • Synthesis and molecular structures of palladium(II) metalated 2-phenylpyridine complexes [PdCl(pyC6H4)L] containing amino- or acetylamino-pyridine co-ligands 

    Al-Jibori, Subhi A.; Gergees, Hayfa M.; Al-Rubaye, Mousa S.; Basak-Modi, Sucharita; Luquin, Asunción Upna Orcid (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
    A number of cyclometalated palladium(II) complexes [PdCl(pyC6H4)(L)] containing amino-pyridine or acetylamino-pyridine co-ligands (L) have been prepared from the reaction of [Pd(pyC6H4)(μ-Cl)]2 with two equivalents of these ...
  • Gold supported on CuOₓ/CeO₂ catalyst for the purification of hydrogen by the CO preferential oxidation reaction (PROX) 

    Laguna, O. H.; Hernández, W. Y.; Arzamendi Manterola, María Cruz Upna Orcid; Gandía Pascual, Luis Upna Orcid; Centeno, M. A. (Elsevier, 2014)   Artículo / Artikulua  OpenAccess
    Hydrogen produced from the conversion of hydrocarbons or alcohols contains variable amounts of CO that should be removed for some applications such as feeding low-temperature polymer electrolyte membrane fuel cells (PEMFCs). ...
  • Lipogenic enzyme activity in growing Rasa Aragonesa lambs 

    Arana Navarro, Ana Upna Orcid; Soret Lafraya, Beatriz Upna Orcid; Corroza Muro, Manuel Upna; Mendizábal Aizpuru, José Antonio Upna Orcid; Mendizábal Múgica, Francisco Javier Upna; Horcada, Alberto; Eguinoa Ancho, Paola Upna; Purroy Unanua, Antonio Upna (CIHEAM, 1995)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The lipogenic enzyme activity of the following enzymes was studied: Glycerol 3-phosphate dehydrogenase (G3PDH), fatty acids synthetase (FAS), NADP-Malate dehydrogenase (ME) and Glucose 6-phosphate dehydrogenase (G6PDH) ...
  • Application of eco-design and life cycle assessment standards for environmental impact reduction of an industrial product 

    Navajas León, Alberto Upna Orcid; Uriarte Elizaga, Leire; Gandía Pascual, Luis Upna Orcid (MDPI, 2017)   Artículo / Artikulua  OpenAccess
    Eco-design is included within the framework of the standard for “Environmental management systems—Guidelines for incorporating Eco-design” (ISO 14006:2011). Eco-design process, as defined in standard, has six steps: (i) ...
  • Rosa canina extracts have antiproliferative and antioxidant effects on caco-2 human colon cancer 

    Jiménez Alonso, Sandra Upna; Gascón, Sonia; Luquin, Asunción Upna Orcid; Laguna, Mariano; Ancín Azpilicueta, Carmen Upna Orcid; Rodríguez Yoldi, María Jesús (Public Library of Science, 2016)   Artículo / Artikulua  OpenAccess
    The in vitro antiproliferative and antioxidant effects of different fractions of Rosa canina hips on human colon cancer cell lines (Caco-2) was studied. The compounds tested were total extract (fraction 1), vitamin C ...
  • Preparation of Al/Fe-pillared clays: effect of the starting mineral 

    Muñoz, Helir Joseph; Blanco, Carolina; Gil Bravo, Antonio Upna Orcid; Vicente, Miguel Ángel; Galeano, Luis Alejandro (MDPI, 2017)   Artículo / Artikulua  OpenAccess
    Four natural clays were modified with mixed polyoxocations of Al/Fe for evaluating the effect of the physicochemical properties of the starting materials (chemical composition, abundance of expandable clay phases, cationic ...
  • Fiber optic sensors based on hybrid phenyl-silica xerogel films to detect n-hexane: determination of the isosteric enthalpy of adsorption 

    Echeverría Morrás, Jesús Upna Orcid; Calleja, Ignacio; Moriones Jiménez, Paula Upna Orcid; Garrido Segovia, Julián José Upna Orcid (Beilstein-Institut, 2017)   Artículo / Artikulua  OpenAccess
    We investigated the response of three fiber optic sensing elements prepared at pH 10 from phenyltriethoxysilane (PhTEOS) and tetraethylsilane (TEOS) mixtures with 30, 40, and 50% PhTEOS in the silicon precursor mixture. ...
  • Estrategias del alumnado de Educación Secundaria para estimar la densidad 

    Napal Fraile, María Upna Orcid; Echeverría Morrás, Jesús Upna Orcid; Zulet González, Amaia Upna; Santos Cervera, Leyre; Ibarra Murillo, Julia Upna Orcid (Universitat Autònoma de BarcelonaUniversitat de València, 2018)   Artículo / Artikulua  OpenAccess
    La densidad, o concentración de materia, es un concepto muy relevante pero que genera muchas dificultades de comprensión. Para medir la competencia en la estimación de la densidad del alumnado de la ESO, se pasó un ...
  • Therapeutic applications of rose hips from different rosa species 

    Mármol, Inés; Sánchez de Diego, Cristina; Jiménez Moreno, Nerea Upna Orcid; Ancín Azpilicueta, Carmen Upna Orcid; Rodríguez Yoldi, María Jesús (MDPI, 2017)   Artículo / Artikulua  OpenAccess
    Rosa species, rose hips, are widespread wild plants that have been traditionally used as medicinal compounds for the treatment of a wide variety of diseases. The therapeutic potential of these plants is based on its ...
  • Microwave-assisted pillaring of a montmorillonite with al-polycations in concentrated media 

    González, Beatriz; Pérez, Alba Helena; Trujillano, Raquel; Gil Bravo, Antonio Upna Orcid; Vicente, Miguel Ángel (MDPI, 2017)   Artículo / Artikulua  OpenAccess
    A montmorillonite has been intercalated with Al3+ polycations, using concentrated solutions and clay mineral dispersions. The reaction has been assisted by microwave radiation, yielding new intercalated solids and leading ...
  • Asymmetric propionate aldol reactions of a chiral lithium enolate accessible from direct enolization with n-butyllithium 

    Palomo, Claudio; Oiarbide, Mikel; Gómez Bengoa, Enrique; Mielgo, Antonia; González Rego, María Concepción Upna; García Castillo, Jesús María Upna Orcid; González Guerrero, Alberto Upna; Odriozola Ibarguren, José Manuel Upna Orcid; Bañuelos, Patricia Upna; Linden, Anthony (ARKAT USA, Inc., 2005)   Artículo / Artikulua  OpenAccess
    The presented lithium enolate-based methodology is suitable for access to propionate syn-aldol motifs with high levels of stereocontrol. The reactive lithium enolate species is generated by direct treatment of a camphor-based ...
  • Bioavailability of heavy metals in soils amended with sewage sludge 

    Morera Luzán, María Teresa Upna; Echeverría Morrás, Jesús Upna Orcid; Garrido Segovia, Julián José Upna Orcid (Agricultural Institute of Canada, 2002)   Artículo / Artikulua  OpenAccess
    The recycling of sewage sludge to agricultural land results in the slow accumulation of potentially toxic heavy metals in soils. A greenhouse experiment was conducted to determine the bioavailability of Cu, Ni, Pb and ...
  • Application of gold complexes in the development of sensors for volatile organic compounds 

    Luquin, Asunción Upna Orcid; Elosúa Aguado, César Upna Orcid; Vergara, Elena; Estella, Juncal Upna; Cerrada, Elena; Bariáin Aisa, Cándido Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Garrido Segovia, Julián José Upna Orcid; Laguna, Mariano (World Gold Council, 2007)   Artículo / Artikulua  OpenAccess
    Two different kinds of sensors have been developed by using the same kind of vapochromic complexes. The vapochromic materials [Au2Ag2(C6F5)(4)L-2](n) have different colours depending on the ligand L. These materials change, ...
  • Mobility of heavy metals in soils amended with sewage sludge 

    Morera Luzán, María Teresa Upna; Echeverría Morrás, Jesús Upna Orcid; Garrido Segovia, Julián José Upna Orcid (Agricultural Institute of Canada, 2001)   Artículo / Artikulua  OpenAccess
    Sewage sludges added to arable land can improve soil fertility and physical properties. However, the concentrations of heavy metals commonly found in sludges limits their application to soil. The purpose of this paper is ...
  • Navarra y China. Punto de partida 

    Sánchez Fernández, Carlos Upna (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2006)   Artículo / Artikulua  OpenAccess
    Es cierto, y no nos equivocamos al decir que China es diferente. Esta diferencia hace que insistamos una y otra vez en que China es, si no el lugar más difícil para hacer negocios, sí uno de los más difíciles. Pero, a ...