1,720,991 research outputs found
La contaminazione ambientale e il degrado dei materiali di interesse storico-artistico
No full textLa contaminazione ambientale e il degrado dei materiali di interesse storico-artistic
Invasive and Not Invasive Analysis of Soluble Salts in Stones; Look For Correlation in the Case Study of the Todi Cathedral Floor
No full textTwo non invasive methods and the UNI 11087/2003 method [1] for the determination of soluble salts content in stones were compared looking for correlation between obtained data. Three different kind of stone, constituting the Todi Cathedral floor, were considered.
Ionic chromatography (IC) and Inductively Coupled Plasma (ICP) were used for the determination of anions and cations respectively; pH, conductivity and redox potential (ORP) measurements were also performed. Samples were characterised by Scanning Electron microscopy coupled with X-ray microanalysis (SEM/EDS) and X-ray diffraction (XRD). Density and porosity were also determined, the second by a new methodological approach (running research).
Interesting results can be drawn by the very big mole of obtained data; surely it would be better evaluated by chemometrics or multivariate analysis
Diagnostic applied to an easel painting by Ferraù Fenzoni (Chatedral of Todi)
No full textOur team has recently applied a set of complementary techniques to obtain analytical information on four large oil paintings on canvas (3.50 m h. x 2.50 m l.) of the artist Ferraù Fenzoni, located in the Todi Cathedral. Results on one of them, not subjected to recent restoration, are here illustrated, as the most suitable to identify pigments and materials used by this author.
Even if more methodologies have been used, we here mainly compare results coming from Mineralogical Microscopy and X-ray Fluorescence Spectroscopy (XRFS), while only the most significant information from UV Fluorescence (UVF) Photography and Reflectance Spectroscopy is reported.
Data have allowed us to identify almost all the pigments as well as the composition of the preparatory layer. A chemometric treatment of the data obtained for all the four paintings, through the techniques quoted above, surely will add further information: this work is now running
A portable apparatus for energy dispersive X-ray fluorescence analysis of sulfur and chlorine in frescoes and stone monuments
No full textCaratterizzazione archeometallurgica dei bronzi rinvenuti nel mare di Brindisi in località Punta del Serrone
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Valutazione dei fenomeni corrosivi in corso sulla superficie della statua equestre dell'Imperatore Marco Aurelio
No full textIl monumento equestre in bronzo di Marco Aurelio ha recentemente subito un intervento di restauro che ne ha rimesso in luce la patina naturale e parte della doratura superficiale. In vista di una possibile ricollocazione della statua sulla Piazza del Campidoglio di Roma, è stato intrapreso uno studio sulle condizioni attuali di conservazione e sui più idonei metodi di protezione superficiale
Il ripostiglio di armi di ferro di Porpetto (UD): un progetto di conservazione analitica
No full textDescrizione di un progetto di studio e conservazione di un ripostiglio di armi in ferro del VI-V° secolo a.C. eseguita con il supporto di tecniche diagnostiche tra le quali radiografia XR, XRD e SE
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