• Application of gold complexes in the development of sensors for volatile organic compounds 

      Luquin, Asunción Upna; Elosúa Aguado, César Upna; Vergara, Elena; Estella, Juncal Upna; Cerrada, Elena; Bariáin Aisa, Cándido Upna; Matías Maestro, Ignacio Upna; Garrido Segovia, Julián José Upna; 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; Garrido Segovia, Julián José Upna (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 ...
    • 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; Calleja, Ignacio; Moriones Jiménez, Paula Upna; Garrido Segovia, Julián José Upna (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. ...
    • Mobility of heavy metals in soils amended with sewage sludge 

      Morera Luzán, María Teresa Upna; Echeverría Morrás, Jesús Upna; Garrido Segovia, Julián José Upna (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 ...
    • Síntesis y caracterización de xerogeles silíceos híbridos (RTEOS/TEOS; R=P, Ph). Separación y purificación de gases mediante cromatografía 

      Moriones Jiménez, Paula Upna (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 ...