GUILLÉN GUILLÉN , Elena

The design of an efficient and stable solar selective coating for Concentrating Solar Power central receivers requires a complex study of the materials candidates that compose the coating. Carbon-transition metal nanocomposites were studied in this work as absorber materials because they show appropriate optical properties with high absorption...

Environmental characterization of optical and structural properties of thin films continues to be a challenging task. To understand the failure mechanism in high temperature thin film applications, it is crucial to understand how material properties change with temperature. An accurate knowledge of the variation of the dielectric function of...

A systematic study of TiO2 films deposited by dc filtered cathodic vacuum arc (FCVA) was carried out by varying the deposition parameters in a reactive oxygen atmosphere. The influence of the oxygen partial pressure on film properties is analyzed. Composition was obtained by Rutherford backscattering spectroscopy (RBS) measurements, which also...

In this paper we analyze a sample of 100 children and young adolescents treated in the USMI-J at Juan Ramón Jiménez Hospital in 1986 and its continuity twenty five years later in the USMC in the province of Huelva. The variables studied were distribution by sex, age at the first consult and established diagnoses. Results reveal that of the...

Solar selective coatings based on carbon transition metal carbide nanocomposite absorber layers were designed. Pulsed filtered cathodic arc was used for depositing amorphous carbon:metal carbide (a-C:MeC, Me ¼ V, Mo) thin films. Composition and structure of the samples were characterized by ion beam analysis, X-ray diffraction, Raman...

En este trabajo se analiza una muestra de 100 niños y jóvenes adolescentes atendidos en la USMI-J del hospital Juan Ramón Jiménez en el año 1986 y su continuidad veinticinco años después en las USMC de la provincia de Huelva. Las variables estudiadas son distribución por sexos, edades en las primeras consultas y los diagnósticos establecidos....