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29 results on '"Alvarez-Garcia, J"'

14. Differential clinical characteristics and prognosis of intraventricular conduction defects in patients with chronic heart failure

Author

Cinca, Juan, Mendez, Ana, Puig, Teresa, Ferrero, Andreu, Roig, Eulalia, Vazquez, Rafael, Gonzalez-Juanatey, Jose R., Alonso-Pulpon, Luis, Delgado, Juan, Brugada, Josep, Pascual-Figal, Domingo, Brugada, J., Batlle, M., Berruezo, A., Hevia, S., Mont, L., Pérez-Villa, F., Cinca, J., Roig, E., Bayés de Luna, A., Borrás, X., Carreras, F., Ferrero, A., Guerra, J.M., Hove-Madsen, L., Jorge, E., Martínez, R., Padró, J., Puig, T., Ribas, N., Viñolas, X., Alvarez-Garcia, J., González-Juanatey, J.R., Bandín, M., Eiras, S., Fernández-Hernández, L., García-Acuña, J., Gómez-Otero, I., Grigorian-Shamagian, L., Lago, F., Manzón, P., Moure, M., Otero-Raviña, F., Otero-Santiago, F., Rodino Janeiro, B.K., Rubio, J., Salgado, A., Seoane, A., Varela, A., Lear, P.V., Fernández-Cruz, A., Alvarez de Arcaya Vicente, A., Avila, M., Bordiu, E., Calle, L., Fernández-Pinilla, C., Gómez-Garre, D., González-Rubio, L., Marco, J., Martell, N., Muñoz-Pacheco, P., Ortega, A., Patiño, R., Pedrajas, J., Reinares, L., Pérez-Villacastín, J., Bover, R., Cobos, M., García-Quintanilla, J., Moreno, J., Pérez-Castellano, N., Pérez-Serrano, M., Vila, I., Delgado, J.F., Arribas, F., Escribano, P., Flox, A., Jiménez López-Guarch, C., Paradina, M., Ruiz-Cano, J., Sáenz de la Calzada, C., Salguero, R., Sánchez-Sánchez, V., Tello de Meneses, R., Vicente-Hernández, M., Alonso-Pulpón, L., Fernández -Lozano, I., García-Pavía, P., García-Touchard, A., Gómez-Bueno, M., Márquez, J., Segovia, J., Silva, L., Vázquez-Mosquera, M., Valdés, M., García-Alberola, A., Garrido, I., Pascual-Figal, D. A., Pastor-Pérez, F.J., Sánchez-Más, J., Tornel, P., Rivera, M., Almenar, L., Cortés, R., Martínez-Dolz, L., Montero, J., Portolés, M., Roselló-Lleti, E., Salvador, A., Vila, V., Vázquez, R., Cubero, J., Fernández-Palacín, A., García-Medina, D., García-Rey, S., Laguna, E., Leal del Ojo, J., Miñano, F., Pastor-Torres, L., Pavón, R., Pérez-Navarro, A., Villagómez, D., Vázquez, R., Arana, R., Bartolomé, D., Cabeza, P., Calle-Pérez, G., Camacho, F., Cano, L., Carrillo, A., Díaz-Retamino, E., Escolar, V., Fernández-Rivero, R., Gamaza, S., Giráldes, A., Hernández-Vicente, N., Lagares, M., López-Benítez, J., Marante, M., Otero, E., Pedregal, J., Sancho-Jaldón, M., Sevillano, R., Zayas, R., Verdú, J.M., Aguilar, S., Aizpurúa, M., Alguacil, F., Casacuberta, J., Cerain, J., Domingo, M., García-Lareo, M., Herrero-Melechón, J., López-Pareja, N., Mena, A., Pérez-Orcero, A., Rodríguez- Cristóbal, J., Rozas, M., Sorribes, J., Torán, P., Worner, F., Barta, L., Bravo, C., Cabau, J., Casanova, J., Daga, B., De la Puerta, I., Hernández-Martín, I., Piñol, E., Pueo, E., Torres, G., Troncoso, A., Viles, D., Bardají, A., Mercè, J., Sanz-Girgas, E., Valdovinos, P., Aramburu, O., Arias, J., García-González, C., Alonso, M., Bischofberger, C., Domínguez-De Pablos, G., Jiménez-Cervantes, D., Ureña, I., Grau-Sepúlveda, A., Fiol, C., Pericas, P., Villalonga, M., Orosa, P., Agüero, J., Planas-Aymá, F., Grau-Amoros, J., Planas-Comes, F., and San Vicente, L.

Published
2013
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23. Analysis of S-rich CuIn[(S, Se).sub.2] layers for photovoltaic applications: influence of the sulfurization temperature on the crystalline properties of electrodeposited and sulfurized CuIn[Se.sub.2] precursors

Author

Izquierdo-Roca, V., Perez-Rodriguez, A., Morante, J.R., Alvarez-Garcia, J., Calvo-Barrio, L., Bermudez, V., Grand, P.P., Parissi, L., Broussillon, C., and Kerrec, O.

Subjects
Annealing -- Analysis, Copper alloys -- Thermal properties, Copper alloys -- Optical properties, Selenium -- Thermal properties, Solar batteries -- Design and construction, Solar cells -- Design and construction, Sulfur -- Thermal properties, Sulfur -- Chemical properties, Physics
Abstract

The effect of the annealing temperature on the crystalline properties of the final absorbers is examined. The parameter has a vital impact on the quality and properties of the layers, which has a significant affect on the characteristics of the solar cells fabricated with these absorbers.

Published
2008

24. Raman microprobe characterization of electrodeposited S-rich CuIn[(S,Se).sub.2] for photovoltaic applications: Microstructural analysis

Author

Izquierdo-Roca, V., Perez-Rodriguez, A., Romano-Rodriquez, A., Morante, J.R., Alvarez-Garcia, J., Calvo-Barrio, L., Bermudez, V., Grand, P.P., Ramdani, O., Parissi, L., and Kerrec, O.

Subjects
Annealing -- Analysis, Chalcopyrite -- Chemical properties, Chalcopyrite -- Optical properties, Chalcopyrite -- Thermal properties, Chemical synthesis -- Analysis, Indium -- Chemical properties, Indium -- Optical properties, Indium -- Thermal properties, Physics
Abstract

Raman scattering and microstructural characterization of S-rich CuIn[(S,Se).sub.2] absorbers, which are produced by electrodeposition of nanocrystalline CuIn[Se.sub.2] precursors and subsequent reactive annealing under sulfurizing conditions, are presented. The microstructural analysis has disclosed the existence of major differences in relation to the vacuum deposition processes, which has highlighted the higher complexity of the mechanisms involved in the synthesis and recrystallization of the electrodeposited absorbers.

Published
2007

27. Remote Dielectric Sensing (ReDS) for a Safe Discharge in Patients with Acutely Decompensated Heart Failure: Rationale and Design of the ReDS-SAFE HF Study.

Author

Alvarez-Garcia, J., Lala, A., Ullman, J., Damato, A., Brunjes, D., and Pinney, S.

Subjects
*REMOTE sensing, *HOSPITAL admission & discharge, *HEART failure, *DESIGN failures, *INSTITUTIONAL review boards
Abstract

Fluid overload, especially pulmonary congestion, is one of the main contributors into heart failure (HF) readmission risk and it is a clinical challenge for clinicians. The Remote dielectric sensing (ReDS) system is a novel electromagnetic energy-based technology that can accurately quantify changes in lung fluid concentration noninvasively. Previous non-randomized studies suggest that ReDS-guided management has the potential to reduce readmissions in HF patients recently discharged from the hospital. The aim of this study is to test whether a ReDS-guided strategy during HF admission is superior to the standard of care during a 1-month follow up. The ReDS-SAFE trial is an investigator-initiated, single center, single blind, 2-arm randomized clinical trial, in which 250 inpatients with acutely decompensate HF will be randomized to a) standard of care strategy, with a discharge scheme based on current clinical practice, or b) ReDS-guided strategy, with a discharge scheme based on specific target value given by the device. All patients will provide signed informed consent and the protocol will be approved by Institutional Review Board of the hospital. This study will be registered in ClinicalTrials.gov. Time to the primary endpoint will be evaluated with the use of Kaplan-Meier estimates and Cox proportional hazards models. The primary outcome will be a composite of unplanned visit for HF that lead to the use of intravenous diuretics, hospitalization for worsening HF, or death from any cause at 30 days after discharge. [ABSTRACT FROM AUTHOR]

Published
2020
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28. Estudio de la reacción de sulfurización de precursores Cu/In para la formación de capas delgadas policristalinas de CuInS2 para células solares

Author

Scheer, R., Morante, J. R., Romano-Rodríguez, A., Pérez-Rodríguez, A., Calvo-Barrio, L., Álvarez-García, J., Barcones, B., Klenk, R., and Pietzker, CH.

Subjects
CuInS2, in-situ Raman, chalcopyrite, CuAu ordering, calcopirita, orden CuAu, Clay industries. Ceramics. Glass, TP785-869
Abstract

The details of the sulphurisation reaction of Cu/In metallic precursors layers for the preparation of CuInS2 solar cells have been investigated. For this purpose, we have designed an experiment using a combined sequence of sulphurisation and selenization steps. Analysing the resultant layers by Raman Spectroscopy and Auger Electron Spectroscopy (AES) we could study the details of the chemical reaction. By this method we have been able to identify where the chemical reaction between the metallic species and the reactive atmosphere takes place. Besides, we have developed an experimental system to analyse the sulphurisation process in-situ by Raman spectroscopy. With this system we studied the evolution of the material structure during the sulphurisation process. The experimental results prove that the reaction takes place in the surface, forming in the firsts steps CuInS2 in two different structures (chalcopyrite and CuAu ordering). Afterwards, the out-diffusion of the metallic atoms towards the surface allows the reaction between them and the sulphur vapour. Together with the sulphurisation process the improvement of the crystalline quality of the CuInS2 forming a chalcopyrite CuInS2 layer has been observed.En este trabajo se presenta un estudio detallado de los procesos implicados en la sulfurización de capas metálicas de Cu-In para la fabricación de células solares de CuInS2. Con este objeto, se ha desarrollado un experimento de sulfurización parcial de las capas, que han sido sometidas posteriormente a un tratamiento de selenización. El estudio de estas estructuras mediante Espectroscopía Raman y Espectroscopía de Electrones Auger (AES) ha permitido conocer algunos de los detalles de la reacción química, en concreto la identificación del frente de crecimiento de la reacción de sulfurización. Paralelamente, se ha desarrollado un sistema experimental que ha hecho posible investigar in-situ la reacción de sulfurización por Espectroscopía Raman, lo cual ha permitido un seguimiento preciso de la evolución estructural del material durante el proceso. Los resultados experimentales demuestran que la reacción de sulfurización se inicia en la superficie de la capa, dando lugar a la formación de CuInS2, coexistiendo dos estructuras cristalinas polimórficas (calcopirita y orden catiónico CuAu). Posteriormente la reacción química continúa asistida por la difusión de los metales hacia la superficie, que reaccionan con la atmósfera de azufre, de forma simultánea se produce una transformación de la fase CuAu del compuesto en la estructura calcopirita.

Published
2004

29. Real-time investigations of the influence of sodium on the properties of Cu-poor prepared CuInS2 thin films

Author

Rudigier, E., Pietzker, Ch., Wimbor, M., Luck, I., Klaer, J., Scheer, R., Barcones, B., Jawhari Colin, T., Alvarez-Garcia, J., Perez-Rodriguez, A., and Romano-Rodriguez, A.

Subjects
*SODIUM, *RAMAN spectroscopy
Abstract

The influence of sodium on the growth path and the properties of Cu-poor prepared CuInS2 (CIS) thin films is investigated. In situ experiments of X-ray diffraction and Raman spectroscopy reveal a different growth path when sodium is incorporated. A delay of the CIS formation has been found as well as a different contribution of the resulting phases in the layer like the In–S alloy is now supposed to be located nearer the surface. Sodium doping results in a remarkable increase in the lateral conductivity and the cell efficiency of CuInS2 based solar cells. [Copyright &y& Elsevier]

Published
2003
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