Listar por autor UPNA "Garrido Segovia, Julián José"

Mostrando ítems 1-18 de 18

    • 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, ...

    • 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, ...

    • Design of novel photoactive modified titanium silicalites and their application for venlafaxine degradation under simulated solar irradiation 

      Cruz Quesada, Guillermo Upna Orcid; Sampaio, María J.; Espinal Viguri, Maialen Upna Orcid; López Ramón, María Victoria; Garrido Segovia, Julián José Upna Orcid; Silva, Cláudia G.; Faria, Joaquim L. (Wiley, 2024)   Artículo / Artikulua  OpenAccess
      Titanium silicalites (TS) are well-known materials for their use in industrial oxidation reactions, and although they are used as photocatalysts, their activity is limited. Therefore, numerous synthetic strategies are ...

    • 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. ...

    • From fundamental materials chemistry to sensing applications: unravelling the water adsorption mechanism of a luminescent optical fibre sensor membrane 

      Cruz Quesada, Guillermo Upna Orcid; Rosales Reina, Beatriz; López Torres, Diego Upna Orcid; Reinoso, Santiago Upna Orcid; López Ramón, María Victoria; Arzamendi Manterola, María Cruz Upna Orcid; Elosúa Aguado, César Upna Orcid; Espinal Viguri, Maialen Upna Orcid; Garrido Segovia, Julián José Upna Orcid (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
      This work provides insight into the correlation between the luminescent response of a water-vapour optical fibre sensor and the textural properties of its lanthanide-doped silica coating. To this end, a library of 16 silica ...

    • Hybrid xerogels doped with Tb(III) and Eu (III) and a water soluble Pybox ligand 

      Cruz Quesada, Guillermo Upna Orcid; Espinal Viguri, Maialen Upna Orcid; Garrido Segovia, Julián José Upna Orcid (2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Hybrid organic-inorganic siliceous materials (ORMOSiLs) are a key focus within the nanoscience area as they combine advantages of inorganic materials without losing characteristics intrinsic of organic molecules. In the ...

    • Hybrid xerogels: study of the sol-gel process and local structure by vibrational spectroscopy 

      Cruz Quesada, Guillermo Upna Orcid; Espinal Viguri, Maialen Upna Orcid; López Ramón, María Victoria; Garrido Segovia, Julián José Upna Orcid (MDPI, 2021)   Artículo / Artikulua  OpenAccess
      The properties of hybrid silica xerogels obtained by the sol-gel method are highly dependent on the precursor and the synthesis conditions. This study examines the influence of organic substituents of the precursor on the ...

    • 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. ...

    • 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 ...

    • The narrative of a line of research from a feminist perspective: fiber optic sensors and actor-network theory (ANT) 

      Aliende Urtasun, Ana Upna Orcid; Garrido Segovia, Julián José Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      The narrative of a line of research from a feminist perspective involves describing the situated practices that contribute to understanding inequality in the construction of the social relationships that build links between ...

    • New hybrid organochlorinated xerogels 

      Cruz Quesada, Guillermo Upna Orcid; Espinal Viguri, Maialen Upna Orcid; López Ramón, María Victoria; Garrido Segovia, Julián José Upna Orcid (2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Hybrid silica xerogels (HSXG) combine the properties of organic and inorganic components in the same material, which makes them promising and versatile candidates for multiple applications. These materials can be easily ...

    • Novel silica hybrid xerogels prepared by co-condensation of TEOS and ClPhTEOS: a chemical and morphological study 

      Cruz Quesada, Guillermo Upna Orcid; Espinal Viguri, Maialen Upna Orcid; López Ramón, María Victoria; Garrido Segovia, Julián José Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      The search for new materials with improved properties for advanced applications is, nowadays, one of the most relevant and booming fields for scientists due to the environmental and technological needs of our society. ...

    • 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 ...

    • Tunability of hybrid silica xerogels: surface chemistry and porous texture based on the aromatic precursor 

      Rosales Reina, Beatriz; Cruz Quesada, Guillermo Upna Orcid; Padilla-Postigo, Nataly; Irigoyen-Razquin, Marian; Alonso-Martínez, Ester; López Ramón, María Victoria; Espinal Viguri, Maialen Upna Orcid; Garrido Segovia, Julián José Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      The interest in new materials with specific properties has increased because they are essential for the environmental and technological needs of our society. Among them, silica hybrid xerogels have emerged as promising ...

    • Volatile compounds other than CO2 emitted by different microorganisms promote distinct posttranscriptionally regulated responses in plants 

      García Gómez, Pablo; Almagro Zabalza, Goizeder Upna Orcid; Sánchez López, Ángela María; Bahaji, Abdellatif Upna Orcid; Ameztoy del Amo, Kinia Upna Orcid; Ricarte Bermejo, Adriana Upna Orcid; Baslam, Marouane Upna; López Gómez, Pedro Upna Orcid; Morán Juez, José Fernando Upna Orcid; Garrido Segovia, Julián José Upna Orcid; Muñoz Pérez, Francisco José Upna; Baroja Fernández, Edurne Upna Orcid; Pozueta Romero, Javier Upna Orcid (Wiley, 2019)   Artículo / Artikulua  OpenAccess
      A 'box-in-box' cocultivation system was used to investigate plant responses to microbial volatile compounds (VCs) and to evaluate the contributions of organic and inorganic VCs (VOCs and VICs, respectively) to these ...
      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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