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Bibliographic Details
Main Author:	G. Ortega Zarzosa
Format:	Artículo científico
Language:	en
Published:	Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. 2000
Subjects:	Física, Astronomía y Matemáticas Sol gel X rays glasses structure
Online Access:	https://www.redalyc.org/articulo.oa?id=94201112
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Fluorescents effects of silica xerogel induced by incorporation of chard leaves extracts and ZnO nanoparticles
by: J.M. Guajardo-Pacheco
Published: (2008)

A study on microstructure and magnetic properties of nanostructured CoxNi1−xMn0.5Fe1.5O4(x = 0, 0.25, 0.5, 0.75, 1) spinel ferrites
by: A Hussain
Published: (2021)

Effect of Re and Tm-site on morphology structure and optical band gap of ReTmO3(Re = La, Ce Nd, Gd, Dy, Y and Tm = Fe, Cr) prepared by sol-gel method
by: M. Tufiq Jamil
Published: (2018)

Effect of the phase composition and crystallite size of sol-gel TiO2 nanoparticles on the acetaldehyde photodecomposition
by: R. Carrera-López
Published: (2012)

Caracterización estructural y morfológica de hidroxiapatita nanoestructurada: estudio comparativo de diferentes métodos de síntesis
by: A.B. Martínez-Valencia
Published: (2008)

Shifting to the red the absorption edge in TiO2 films: a photoacoustic study
by: F. Gordillo-Delgado
Published: (2011)

Push-pull chromophores aggregation in SiO2 sol-gel films doped with silver nanoparticles
by: A. Franco
Published: (2011)

Effect of sintering temperature on the structure and mean crystallite size of Zn 1 - x Co x O (x = 0.01 – 0. 05) samples
by: F. Acosta-Humánez
Published: (2014)

Resistencia a la corrosión de películas cerámicas delgadas
by: G. Carbajal-De la Torre
Published: (2011)

Physical properties of TiO2 prepared by sol-gel under different pH conditions for photocatalysis
by: M. Morán Pineda
Published: (2005)

Nanocrystalline Titanium Oxide thin Films Prepared by Sol-Gel Process
by: Nelcy D. S. Mohallem
Published: (2006)

Nanopartículas de Ni/NiO y Cu-Ag obtenidas mediante el método de Pechini: síntesis y caracterización
by: B. A. Puente-Urbina
Published: (2012)

Magnetic Nanocomposite Thin Films Prepared by Sol-Gel Process
by: Luciana M. Seara
Published: (2006)

Preparación de monolitos de sílice con vanadio como modificador de red e incorporación de esferas nanométricas monodispersas para inducir el fenómeno de difracción en el rango de la luz visible
by: J. M. Yáñez
Published: (2006)

Uso de una resina polimérica en la formación de nanopartículas magnéticas dentro de una matriz de sílice
by: S. M. Montemayor
Published: (2004)

Properties and applications of porous glasses from foamed glasses and gel-derived glasses to allophanes
by: T. Woignier
Published: (2006)

CuO@TiO2 and NiO@TiO2 core-shell catalysts for hydrogen production from the photocatalytic reforming of glycerol aqueous solution
by: S.P. Ramírez
Published: (2020)

Structural evolution of silica-gel in the late stages of the gelation process
by: Martinez J.R., Ruiz f., De la Cruz-Mendoza J.A., Villaseñor-Gonzalez P., Gonzalez-Hernandez J., Gonzalez-Chavez M.M., and Valle Aguilera L
Published: (1998)

Magnetic and structural characterization of the M-SiO2 sistems, with M=Fe, Ni and Co produced by Sol-Gel
by: J.L. Galán Rojas
Published: (2012)

Synthesis and magnetic characterization of LaMnO3 nanoparticles
by: E. Hernández
Published: (2015)

Structure and Morphology of SBA-15 Thin Films on Different Substrates
by: Silvanna L. A. Maranhão
Published: (2014)

Degradación del 2,4,6- triclorofenol usandohidrotalcitas calcinadas Mg/Al como fotocatalizadores
by: E. Ramos-Ramírez
Published: (2015)

Photoconductivity studies of gold nanoparticles supported on amorphous and crystalline TiO2 matrix prepared by sol-gel method
by: G. Valverde-Aguilar
Published: (2011)

Brownian motion of optically anisotropic particles in weak polymer gels
by: P. Díaz Leyva
Published: (2004)

Optical properties of Au nanoparticles embedded in ZrO2 thin films prepared by dip-dry technique
by: H. Arizpe Chávez
Published: (2004)

Evaluation of the effect of the synthesis method on the performance of manganese spinel as cathode material in lithium-ion batteries
by: Lina Maria Uribe-Grajales
Published: (2018)

Síntesis y caracterización de nanopartículas de ferrita Cu 1-X Co X Fe 2 O 4 para la reducción catalítica (RCS) del NOx
by: Sarah Briceño
Published: (2010)

Nanostructured zirconium titanate fibers prepared by particulate sol–gel and cellulose templating techniques
by: Rouhani, Parvaneh, et al.
Published: (2013)

Reducción catalítica selectiva de NOx usando nanopartículas de ferritas Cu1-XCoXFe2O4 como catalizador
by: Sarah Briceño
Published: (2009)

Fabrication and photophysical studies of CdTe quantum-dots dispersed in SiO2 sonogel optical-glasses
by: Omar G. Morales-Saavedra
Published: (2015)

Synthesis of Gd2O3:Eu3+nanocrystallites emmbeded in SiO2 using polyvinylpyrrolidone (pvp) by sol-gel process
by: A. García Murillo
Published: (2011)

Stoichiometric hydroxyapatite obtained by precipitation and sol gel processes
by: C. Guzmán Vázquez
Published: (2005)

Hydrogen production using mixed oxides: TiO2-M (CoO and WO3 )
by: Alejandro Pérez-Larios
Published: (2013)

Preparation and characterization of Mg-modified zirconias as catalysts for the direct synthesis of dimethyl carbonate (DMC)
by: Andrés Orrego Romero
Published: (2011)

Influence of Low Al2O3 Doping on the Microstructure and Phase Evolution of Sol–Gel Derived Chromium Oxide Powders.
by: YOUNES, Rassim, et al.
Published: (2026)

Incremento de la sensibilidad espectral del tio2 mediante modificación química con fe3+ y al3+
by: Olga Marcela Castro
Published: (2007)

Síntesis, caracterización y evaluación fotocatalítica de sistemas ZrO2-SiO2
by: JUAN M. MARÍN
Published: (2006)

Recubrimientos anticorrosivos epoxi-sílice dopados con polianilina sobre acero al carbón
by: Jenaro Varela Caselis
Published: (2010)

Películas de silicio dopadas con cristal líquido y rojo de metilo que presentan propiedades ópticas no lineales con potencial aplicación en optoelectrónica
by: Virginia F. Marañón-Ruiz
Published: (2010)

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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