Depósito Digital de Documentos de la UAB Encontrados 94 registros  anterior11 - 20siguientefinal  ir al registro: La búsqueda tardó 0.01 segundos. 
11.
289 p, 9.2 MB Design and development of molecularly imprinted polymers and imprinted sensors / Bates, Ferdia ; Valle Zafra, Manuel del, dir. (Universitat Autònoma de Barcelona. Departament de Química) ; Universitat Autònoma de Barcelona. Departament de Química
Esta tesis se ha hecho principalmente para estudiar e investigar polímeros impresos (MIPs) con la intención de usarlos como sensores de larga vida. La línea de investigación de esta tesis es la dirigida a conseguir la integración de estas formaciones impresas dentro de una lengua electrónica (ET), que es la rama de especialización en la que se ha desarrollado principalmente este proyecto. [...]
This thesis was predominantly undertaken to study and investigate molecular imprinted polymers (MIPs) with a view to their use as high longevity sensing elements in sensor arrays. The research line of the thesis was intended to lead to the integration of these imprinted arrays into an Electronic Tongue (ET) sensing system which is the area of expertise of the research group in which this project was primarily executed. [...]

[Barcelona] : Universitat Autònoma de Barcelona, 2016  
12.
11 p, 415.4 KB Virtual Instrument for an Automated Potentiometric e-Tongue Employing the SIA Technique / Durán, Alejandro (Universidad de La Habana (La Havana, Cuba)) ; Cortina, Montserrat (Universitat Autònoma de Barcelona. Grup de Recerca de Sensors i Biosensors) ; Velasco, Lya (Universidad de La Habana (La Havana, Cuba)) ; Rodríguez, José Antonio (Universidad de La Habana (La Havana, Cuba)) ; Alegret, Salvador, 1947- (Universitat Autònoma de Barcelona. Grup de Recerca de Sensors i Biosensors) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
In this work we report the design, construction, and applications of an electronic tongue (abbreviated e-tongue) based on an array of potentiometric sensors employing the Sequential Injection Analysis technique (SIA) operated as a Virtual Instrument implemented in LabVIEW6. [...]
2006
Sensors, Vol. 6 Núm. 1 (January 2006) , p. 19-29  
13.
186 p, 5.6 MB Carbon nanotubes and metal nanoparticles as electrode platform for sensors and biosensors / Cipri, Andrea ; Valle Zafra, Manuel del, dir. (Universitat Autònoma de Barcelona. Departament de Química) ; Universitat Autònoma de Barcelona. Departament de Química
Este trabajo se centra principalmente en la mejora de las propiedades de los sensores y/o biosensores utilizando nanotubos de carbono y nanopartículas metálicas como plataformas de electrodo. Después de haber considerado varios ejemplos de la literatura, para alcanzar este objetivo se ha decidido integrar las nanopartículas metálicas en la superficie de los nanotubos de carbono para conseguir las ventajas de las propiedades de los dos materiales; por esta razón se han ensayado diversos procedimientos de síntesis de la literatura, y éstos han sido adaptados y optimizados. [...]
This work is mainly focused on the improvement of the properties of sensors and/or biosensors using carbon nanotubes and metal nanoparticles as electrode platform. After having gone through a good amount of literature examples, to reach this goal it has been decided to embed the metal nanoparticles on the carbon nanotubes surface to be able to take advantage of both material properties; for this reason, various synthetic procedures from the literature has been tested, modifying and optimizing them. [...]

[Barcelona] : Universitat Autònoma de Barcelona, 2015  
14.
21 p, 1.5 MB Signal amplification for thrombin impedimetric aptasensor : sandwich protocol and use of gold-streptavidin nanoparticles / Ocaña Tejada, Cristina (Universitat Autònoma de Barcelona. Grup Sensors i Biosensors) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
In this work, we report a highly specific amplification strategy demonstrated for the ultrasensitive biosensing of thrombin with the use of gold-streptavidin nanoparticles (strep-AuNPs) and silver reduction enhancement. [...]
2014 - 10.1016/j.bios.2013.10.068
Biosensors and bioelectronics, Vol. 54 (2014) , p. 408-414  
15.
31 p, 1.9 MB Use of nanomaterials for impedimetric DNA sensors : a review / Bonanni, Alessandra (Universitat Autònoma de Barcelona. Grup Sensors i Biosensors) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This review presents the state of the art of DNA sensors (or genosensors) that utilize electrochemical impedance spectroscopy as the transduction technique. As issue of current interest, it is centered on the use of nanomaterials to develop or to improve performance of these specific biosensors. [...]
2010 - 10.1016/j.aca.2010.08.022
Analytica chimica acta, Vol. 678, Issue 1 (Sep 2010) , p. 7-17  
16.
46 p, 994.6 KB Electronic tongues employing electrochemical sensors / Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This review presents recent advances concerning work with electronic tongues employing electroanalytical sensors. This new concept in the electroanalysis sensor field entails the use of chemical sensor arrays coupled with chemometric processing tools, as a mean to improve sensors performance. [...]
2010 - 10.1002/elan.201000013
Electroanalysis, Vol. 22, Issue 14 (Jul 2010) , p. 1539-1555  
17.
24 p, 510.7 KB Beer classification by means of a potentiometric electronic tongue / Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; Gutiérrez Capitán, Manuel (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; Calvo Boluda, Daniel (Universitat Autònoma de Barcelona. Grup Sensors i Biosensors) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
In this work, an Electronic Tongue (ET) system based on an array of potentiometric ion-selective electrodes (ISEs) is presented for the discrimination of different commercial beer types is presented. [...]
2013 - 10.1016/j.foodchem.2013.05.091
Food chemistry, Vol. 141, Issue 3 (2013) , p. 2533-2540  
18.
29 p, 751.9 KB Application of an electronic tongue towards the analysis of brandies / Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This work reports the application of a voltammetric Electronic Tongue (ET) in the analysis of brandies, specifically in its classification according to the scores given by a skilled sensory panel and in the discrimination of different ageing methods. [...]
2013 - 10.1039/c2ay26066b
Analytical methods, Vol. 5, Issue 5 (March 2013) , p. 1120-1129  
19.
28 p, 458.7 KB Hybrid Electronic Tongue based on Multisensor Data Fusion for Discrimination of Beers / Gutiérrez, Juan Manuel (CINVESTAV. Mexico.) ; Haddi, Zouhair (Moulay Ismaïl University) ; Amari, Aziz (Moulay Ismaïl University) ; Bouchikhi, Benachir (Moulay Ismaïl University) ; Mimendia, Aitor (Universitat Autònoma de Barcelona. Grup Sensors i Biosensors) ; Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This paper reports the use of a hybrid Electronic Tongue based on data fusion of two different sensor families, applied in the recognition of beer types. Six modifiedgraphite- epoxy voltammetric sensors plus 15 potentiometric sensors formed the sensor array. [...]
2013 - 10.1016/j.snb.2012.11.110
Sensors and actuators B: Chemical, Vol. 177 (February 2013) , p. 989-996  
20.
19 p, 1.1 MB Rapid field identification of subjects involved in firearm-related crimes based on electroanalysis coupled with advanced chemometric data treatment / Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; O'Mahony, Aoife M. (University of California. Department of Nanoengineering) ; Samek, Izabela A. (University of California. Department of Nanoengineering) ; Windmiller, Joshua R. (University of California. Department of Nanoengineering) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química) ; Wang, Joseph (University of California. Department of Nanoengineering)
We demonstrate a novel system for the detection and discrimination of varying levels of exposure to gunshot residue from subjects in various control scenarios. Our aim is to address the key challenge of minimizing the false positive identification of individuals suspected of discharging a firearm. [...]
2012 - 10.1021/ac302361z
Analytical chemistry, Vol. 84, Issue 23 (Dec 2012) , p. 10306-10314  

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