Artículos

Artículos Encontrados 51 registros  anterior11 - 20siguientefinal  ir al registro: La búsqueda tardó 0.00 segundos. 
11.
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  
12.
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  
13.
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  
14.
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  
15.
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  
16.
28 p, 2.1 MB Determination of total polyphenol index in wines employing a voltammetric electronic tongue / Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; Gutiérrez, Juan Manuel (Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Department of Electrical Engineering) ; Gutiérrez, Manuel (Institut de Microelectrònica de Barcelona) ; Céspedes Mulero, Francisco (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; Capdevila, Josefina (Institut Català de la Vinya i el Vi. Estació de Viticultura i Enologia) ; Minguez, Santiago (Institut Català de la Vinya i el Vi. Estació de Viticultura i Enologia) ; Jiménez Jorquera, Cecília (Institut de Microelectrònica de Barcelona) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This work reports the application of a voltammetric electronic tongue system (ET) made from an array of modified graphite-epoxy composites plus a gold microelectrode in the qualitative and quantitative analysis of polyphenols found in wine. [...]
2012 - 10.1016/j.aca.2012.02.026
Analytica chimica acta, Vol. 732 (Jun 2012) , p. 172-179  
17.
12 p, 2.8 MB Sensor arrays and electronic tongue systems / Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This paper describes recent work performed with electronic tongue systems utilizing electrochemical sensors. The electronic tongues concept is a new trend in sensors that uses arrays of sensors together with chemometric tools to unravel the complex information generated. [...]
2012
International Journal of Electrochemistry, Vol. 2012, (2012) , p. 1-11  
18.
22 p, 3.1 MB Three different signal amplification strategies for the impedimetric sandwich detection of thrombin / 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 comparative study on three highly specific amplification strategies for the ultrasensitive detection of thrombin with the use of aptamer sandwich protocol. The protocol consisted on the use of a first thrombin aptamer immobilized on the electrode surface, the recognition of thrombin protein, and the reaction with a second biotinylated thrombin aptamer forming the sandwich. [...]
2016 - 10.1016/j.aca.2016.01.027
Analytica chimica acta, Vol. 912 (March 2016) , p. 117-124  
19.
22 p, 1.2 MB A novel bio-electronic tongue using cellobiose dehydrogenase from different origins to resolve mixtures of various sugars and interfering analytes / Cipri, Andrea (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; Schulz, Christopher (Lunds universitet. Department of Analytical Chemistry/Biochemistry and Structural Biology) ; Ludwig, Roland (Universität für Bodenkultur Wien. Department of Food Science and Technology) ; Gorton, Loo (Lunds universitet. Department of Analytical Chemistry/Biochemistry and Structural Biology) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
A novel application of cellobiose dehydrogenase (CDH) as sensing element for a Bioelectronic Tongue (BioET) system has been tested. In this work CDHs from various fungi, which exhibit different substrate specificities, were used to discriminate between lactose and glucose in presence of the interfering matrix compound Ca²⁺ in various mixtures. [...]
2016 - 10.1016/j.bios.2015.12.069
Biosensors and bioelectronics, Vol. 79 (May 2016) , p. 515-521  
20.
9 p, 1.2 MB Simultaneous voltammetric determination of heavy metals by use of crown ether-modified electrodes and chemometrics / González-Calabuig, Andreu (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; Guerrero, David (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors) ; Serrano i Plana, Núria (Universitat de Barcelona. Departament de Química Analítica)) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
A three-sensor array consisting of a graphite-epoxy composite electrode (GEC), 4-carboxybenzo-18-crown-6-GEC and 4- carboxybenzo-15-crown-5-GEC was employed for the simultaneous determination of Cd(II), Pb(II) and Hg(II) by differential pulse anodic stripping voltammetry (DPASV). [...]
2016 - 10.1002/elan.201500512
Electroanalysis, Vol. 28, Issue 4 (April 2016) p. 663–670  

Artículos : Encontrados 51 registros   anterior11 - 20siguientefinal  ir al registro:
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