Listar por autor UPNA "Echeverría Morrás, Jesús"

Mostrando ítems 1-14 de 14

    • 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 ...

    • Comprehensive kinetics of hydrolysis of organotriethoxysilanes by 29Si NMR 

      Moriones Jiménez, Paula Upna Orcid; Arzamendi Manterola, María Cruz Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Garrido Segovia, Julián José Upna Orcid; Echeverría Morrás, Jesús Upna Orcid (American Chemical Society, 2019)   Artículo / Artikulua  OpenAccess
      The kinetics of several representative hybrid precursors were studied via 29Si NMR: three alkyl precursors, methyltriethoxysilane, ethyltriethoxysilane, and propyltriethoxysilane; as well as two unsaturated radicals, ...

    • Dynamic testing in columns for soil heavy metal removal for a car park SUDS 

      López Rodríguez, José Javier Upna Orcid; Echeverría Morrás, Jesús Upna Orcid; San Martín González, Iban Upna; Delgado Zabala, Oihane (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      The increase in urban runoff brought about by a rise in impermeable surfaces has triggered the alteration and pollution of many aquatic systems. The overall goal of this research was to design a ‘Sustainable Urban Drainage ...

    • Effect of Cu substitution on the magnetic and magnetic induction heating response of CdFe₂O₄ spinel ferrite 

      Ghasemi, R.; Echeverría Morrás, Jesús Upna Orcid; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Beato López, Juan Jesús Upna Orcid; Naseri, M.; Gómez Polo, Cristina Upna Orcid (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      In this work, a comparative study of the effect of Cu on the structural, magnetic and magnetic induction heating response in CdFe2O4 spinel is presented. The ceramic nanoparticles (Cu1−xCdxFe2O4; 0 ≤ x ≤ 1) were synthesized ...

    • 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 ...

    • 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. ...

    • 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. ...

    • Mid-infrared spectroscopy (MIR) for simultaneous determination of fat and protein content in meat of several animal species 

      Lozano Saiz, María; Rodríguez Ulibarri, Pablo Upna Orcid; Echeverría Morrás, Jesús Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Sorolla Ayza, Mario Upna; Beriain Apesteguía, María José Upna Orcid (Springer, 2017)   Artículo / Artikulua  OpenAccess
      The aim of this research was to study the application of MIR spectroscopy as an alternative to conventional methods to determine fat and protein content. Samples of the main species used to produce meat products were ...

    • 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 ...

    • Phenyl siloxane hybrid xerogels: structure and porous texture 

      Moriones Jiménez, Paula Upna Orcid; Echeverría Morrás, Jesús Upna Orcid; Parra, Bernardo; Garrido Segovia, Julián José Upna Orcid (Springer US, 2019)   Artículo / Artikulua  OpenAccess
      The aim of this research is to investigate the effect of phenyltriethoxysilane (PhTEOS) and tetraethoxysilane (TEOS) molar ratios as silicon precursors on the structure and porous texture of xerogels. We have prepared ...

    • Síntesis y caracterización de xerogeles silíceos híbridos (RTEOS/TEOS; R=P, Ph). Separación y purificación de gases mediante cromatografía 

      Moriones Jiménez, Paula Upna Orcid (2016)   Tesis doctoral / Doktoretza tesia  OpenAccess
      Esta investigación aborda la síntesis de materiales híbridos mediante proceso sol-gel utilizando diferentes condiciones de síntesis como el pH, temperatura y proporción precursor-disolvente obteniendo una amplia variedad ...

    • Steering the synthesis of Fe3O4 nanoparticles under sonication by using a fractional factorial design 

      Echeverría Morrás, Jesús Upna Orcid; Moriones Jiménez, Paula Upna Orcid; Garrido Segovia, Julián José Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid; Cervera Gabalda, Laura María Upna; Garayo Urabayen, Eneko Upna Orcid; Gómez Polo, Cristina Upna Orcid; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
      Superparamagnetic iron oxide nanoparticles (MNPs) have the potential to act as heat sources in magnetic hyperthermia. The key parameter for this application is the specific absorption rate (SAR), which must be as large as ...

    • Strategies for fabrication of hydrogen peroxide sensors based on electrostatic self-assembly (ESA) method 

      Del Villar, Ignacio Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Echeverría Morrás, Jesús Upna Orcid; Claus, Richard O. (Elsevier, 2004)   Artículo / Artikulua  OpenAccess
      An optical fiber sensor has been fabricated for detection of 5 M–0.1mM concentrations of hydrogen peroxide with a linear response. The deposition method used is electrostatic self-assembly (ESA) of polymer cationic and ...

    • Tenderness of PGI "Ternera de Navarra" beef samples determined by FTIR-MIR spectroscopy 

      Beriain Apesteguía, María José Upna Orcid; Lozano Saiz, María; Echeverría Morrás, Jesús Upna Orcid; Murillo Arbizu, María Teresa Upna Orcid; Insausti Barrenetxea, Kizkitza Upna Orcid; Beruete Díaz, Miguel Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      Understanding meat quality attribute changes during ageing by using non-destructive techniques is an emergent pursuit in the agroindustry research field. Using beef certified samples from the protected geographical indication ...
      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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