Browsing by Author "Diaz, F."
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- ItemBIOSENSORS' PREPARATION TO BE USED FOR ENTRAPMENT METHOD WITH COPOLYMERS POLYANILINE DERIVATIVES(SOC CHILENA QUIMICA, 2010) Sanchez, C. O.; Isla, A.; Bustos, C.; Diaz, F.; Gatica, N.The entrapment method was used to prepare electrochemical biosensors. Using controlled potential method, copolymers were synthesized between aniline y sulfonated-anilines in aqueous media at pH 4.9 on Platinum disc. The copolymers were characterized by elemental analysis and spectroscopy. Glucose-oxidase was entrapped in the electropolymerization process, at 4.9 in aqueous media. The copolymers modified electrodes and copolymer/enzyme were studied as working electrodes for the oxidation of different H2O2 concentrations and indirect D-glucose quantification at pH 7, using controlled potential and the cyclic voltammetry methods (CV) correspondingly. A linear relationship between the hydrogen peroxide (or D-glucose) concentration and the electrochemical response was obtained at pH 7. The modified-electrodes displayed a fast time of current response, limited by the cycle numbers of the cyclic voltammetry, 232 s, and enough stability to allow for the measurements to be taken after several days.
- ItemCHANGE WITH TIME OF THE PROPERTIES OF POLY(SELENO-P-NAPHTHALENE DIAMINE) DOPED WITH CHLORINE(ELSEVIER SCI LTD, 1995) Bernède, J.C.; Safoula, G.; Molinié, P.; Godoy, A.; M'Harzi, H.; Conan, A.; Diaz, F.; Tregouet, Y.After synthesis, poly(seleno-p-arylene diamine) has been doped with chlorine. X-ray photoelectron spectroscopy (XPS) and electron spin resonance (ESR) have been carried out on the doped powder. The changes in the experimental results with storage time have been systematically analyzed. It is observed that, relative to carbon, the atomic percentage of oxygen increases with time while the signals of N, Cl and Se decrease. The changes in the N1s and Se3d spectra show that the polymer is progressively decomposed by chlorine. This decomposition is in good agreement with the change in the ESR signal. These modifications can explain the decrease in conductivity with increasing storage time.
- ItemFactores asociados a fragilidad en pacientes hospitalizados con insuficiencia cardiaca descompensada(2017) Diaz, F.; Nazal, C.; Verdejo Pinochet, Hugo; Rossel, V.; Castro Gálvez, Pablo Federico; Larrea, R.; Concepcion, R.; Sepulveda, L.
- ItemFrailty in heart failure: clinical profile in a latin american country(SAGE PUBLICATIONS LTD, 2014) Diaz, F.; Verdejo, H.; Espinoza, P.; Castro, P.
- ItemFrailty in heart failure: prevalence and factors associated in elderly patients hospitalized in Santiago, Chile(SAGE PUBLICATIONS LTD, 2016) Diaz, F.; Nazzal, C.; Verdejo, H.
- ItemHealth literacy and heart failure knowledge: identifying the associated factors in chilean population(SAGE PUBLICATIONS LTD, 2014) Parra, G.; Diaz, F.; Verdejo, H.; Castro, P.
- ItemHeart failure in chile: patient profile evolution in 11 years of the chilean registry of heart failure (icaro)(SAGE PUBLICATIONS LTD, 2014) Parra, G.; Diaz, F.; Verdejo, H.; Castro, P.
- ItemIncidencia y letalidad intrahospitalaria por insuficiencia cardiaca en Chile: ¿Existen diferencias por sexo?(2017) Diaz, F.; Nazzal, C.; Verdejo Pinochet, Hugo
- ItemIndium free electrode, highly flexible, transparent and conductive for optoelectronic devices(2018) Essaidi, H.; Cattin, L.; El Jouad, Z.; Touihri, S.; Blais, M.; Ortega Cancino, Eduardo Antonio; Louarn, G.; Morsli, M.; Abachi, T.; Manoubi, T.; Addou, M.; Valle de la Cortina, María Angélica del; Diaz, F.; Bernède, J.C.
- ItemInequalities in mortality due to heart failure in Chile: a gender-based analysis(WILEY, 2018) Martinez, J.; Diaz, F.; Verdejo, H.; Sanhueza, M.
- ItemInfluence of the Supporting Electrolyte on the Electrochemical Polymerization of 3,4-Ethylenedioxythiophene. Effect on p- and n-Doping/Undoping, Conductivity and Morphology(2016) Valle Delaware la Cortina, María Angélica del; Ramírez Ramírez, Andrés Mauricio; Hernández Díaz, Loreto Andrea; Armijo, F.; Diaz, F.; Arteaga Arroyo, Gean Carlos
- ItemMapping regional strain in anesthetised healthy subjects during spontaneous ventilation(2019) Cruces, P.; Erranz, B.; Lillo, F.; Sarabia-Vallejos, M.A.; Iturrieta, P.; Morales, F.; Blaha, K.; Medina, T.; Diaz, F.; Hurtado Sepúlveda, Daniel
- ItemModified Electrodes with Polymers Based on Aniline and Thiophene: Characterization and Possible Use as a Sensor(2017) Pardo Roa, María Angélica; Navarrete Lineros, Camilo Hernán; Ramírez Ramírez, Andrés Mauricio; Barrera Rojas, Nelson Patricio; Shultz, S.; Valle Delaware la Cortina, María Angélica del; Diaz, F.
- ItemPredictors of therapeutic non-adherence in chilean heart failure patients(SAGE PUBLICATIONS LTD, 2014) Diaz, F.; Verdejo, H.; Castro, P.
- ItemStructural determinants of therapeutic compliance in chilean heart failure patients(WILEY, 2019) Verdejo Pinochet, Hugo; Diaz, F.; Castro, P. F.
- ItemUse of seattle heart failure score and ADHERE-HF score for mortality estimation risk in chilean patients admitted due to decompensate heart failure(SAGE PUBLICATIONS LTD, 2015) Diaz, F.; Verdejo, H.; Castro, P.; Rossel, V.