Search results for "CERIA"
showing 10 items of 137 documents
Il monastero personale dei principi Moncada nella Palermo del Seicento: l’Assunta e l’ostensorio in corallo di suor Teresa dello Spirito Santo duches…
2019
Il saggio tratta dell’istituzione del monastero dell’Assunta a Palermo, quale modello esemplare delle case “personali” per religiose fondate da importanti famiglie aristocratiche anche per l’allocazione delle proprie congiunte. In questo caso la committenza è di altissimo livello, i Moncada di Paternò per volontà della duchessa di Montalto Juana della Cerda, figlia del duca di Medinaceli. Proprio la duchessa, preso l’abito con il nome di suor Teresa dello Spirito Santo, secondo l’ipotesi qui proposta, fu la committente dell’ostensorio in corallo di cui si scrive e che proviene da quel monastero. A seguito della proposta il prezioso manufatto è restituito al suo autore con una precisa datazi…
Un catalogo virtuale dell'oreficeria siciliana. La guida dei nuovi musei dello splendore.
2012
Coppia di pavoni, maestranze trapanesi, prima metà XVII secolo
2013
scheda catalogo
Large Area Deposition by Radio Frequency Sputtering of Gd0.1Ce0.9O1.95 Buffer Layers in Solid Oxide Fuel Cells: Structural, Morphological and Electro…
2021
We investigate the influence of position, under large circular sputtering targets, on the final electrochemical performance of 35 mm diameter button solid oxide fuel cells with sputter-deposited Gadolinium doped Ceria barrier layers, positioned in order to almost cover the entirety of the area associated with a 120 × 80 mm2 industrial cell. We compare the results obtained via structural and morphological analysis to the Electrochemical Impedance Spectroscopy (EIS) measurements performed on the button cells, disentangling the role of different parameters. The Atomic Force Microscopy analysis makes it possible to observe a decrease in the roughness values from the peripheral to the central zo…
Nobilis instrumenta: suppellettili liturgiche, ex voto e parati sacri nelle chiese di Petralia Sottana
2020
Temi di questo volume sono l’aulica produzione siciliana di preziosi monili in oro, smalti, corallo e pietre preziose, la superba creatività nel modellare suppellettili liturgiche in argento e l’eccellente tradizione manifatturiera di parati sacri. Al lettore viene svelata un’eccezionale collezione di opere d’arte decorativa di cui si fornisce un’analitica catalogazione. Ciascun manufatto, doviziosamente descritto, è contestualizzato nella pertinente temperie storico culturale di cui è espressione. L’ampia rassegna comprende opere realizzate dal X al XIX se colo e conservate nelle chiese di Petralia Sottana, centro delle alte Madonie. Il forte sentimento devozionale e la sensibilità nel dar…
Ceria-based electrolytes prepared by solution combustion synthesis: The role of fuel on the materials properties
2016
Ce0.8Sm0.2O2 â xpowders were synthesized by solution combustion synthesis using citric acid, cellulose and sucrose as single, or intimately mixed, fuels. The powders were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, N2sorption at â196 °C, H2-temperature programmed reduction and thermogravimetric analyses. Textural properties of the powders were shaped by the peculiar employed fuel. The study of reducibility revealed that oxygen vacancies formation is mainly influenced by both parameters, specific surface area and total pore volume. The different tendency toward reduction played a key role in sintering under reducing atmosphe…
Gold Nanoparticles Supported on Nanoparticulate Ceria as a Powerful Agent against Intracellular Oxidative Stress
2012
Ceria-supported gold nanoparticles are prepared exhibiting peroxidase activity and acting as radical traps. Au/CeO2 shows a remarkable biocompatibility as demonstrated by measuring cellular viability, proliferation, and lack of apoptosis for two human cell lines (Hep3B and HeLa). The antioxidant activity of Au/CeO2 against reactive oxygen species (ROS) is demonstrated by studying the cellular behavior of Hep3B and HeLa in a model of cellular oxidative stress. It is determined that Au/CeO2 exhibits higher antioxidant activity than glutathione, the main cytosolic antioxidant compound, and its CeO2 carrier. Overall the result presented here shows the potential of implementing well-established …
Efficient H2 production by photocatalytic water splitting under UV or solar light over variously modified TiO2-based catalysts
2019
Abstract This paper focused for the first time on the comparison between three different approach to modify the chemico-physical properties of TiO2-based photocatalysts and their effect in the H2 production by photocatalytic water splitting both under UV and solar light irradiation, under the same experimental conditions. The application of pulsed laser irradiation to aqueous TiO2 suspensions (first approach) induced structural transformations both on the bulk and on the surface of TiO2, boosting the H2 production, under UV light irradiation, of almost three times (20.9 mmol/gcat·h) compared to bare TiO2 (7.7 mmol/gcat·h). The second strategy was based on a templating method to obtain TiO2 …
Economic Returns to Education in France: OLS and Instrumental Variable Estimations
2013
En ligne sur : http://121.52.153.179/JOURNAL/LJE%20VOL%2018-2/Bhatti,%20Bourdon%20and%20Aslam.pdf; International audience; This article estimates the economic returns to schooling as well as analyzing other explanatory factors for the French labor market. It addresses the issue of endogeneity bias and proposes two new instruments for use in the instrumental variable two-stage least squares technique. Our results show that the proposed instruments are relevant and adequate, based on evidence from the available literature. After using the proposed instruments, we find that the OLS coefficients for schooling are biased downwards. Finally, we choose between the two proposed instruments.