Studio integrato di rocce sedimentarie da cave siciliane di interesse storico-artistico

In-situ NMR diagnostics on building materials of the greek-roman theatre of Taormina.

From laboratory to in-situ Nuclear magnetic Resonance Diagnostics: an application to building materials of the Greek-Roman Theater of Taormina

Diagnostic analyses of the wooden statue of Madonna di Monserrato

Nuclear Magnetic Resonance for Cultural Heritage

Abstract Nuclear magnetic resonance (NMR) portable devices are now being used for nondestructive in situ analysis of water content, pore space structure and protective treatment performance in porous media in the field of cultural heritage. It is a standard procedure to invert T 1 and T 2 relaxation data of fully water-saturated samples to get “pore size” distributions, but the use of T 2 requires great caution. It is well known that dephasing effects due to water molecule diffusion in a magnetic field gradient can affect transverse relaxation data, even if the smallest experimentally available half echo time τ is used in Carr–Purcell–Meiboom–Gill experiments. When a portable single-sided N…

Water capillary absorption in porous media in different wettability conditions studied by Quantitative MRI and X-ray CT

X-ray computed tomography (CT) and magnetic resonance imaging (MRI) have been successfully applied to study both the capillary properties of several samples of Lecce stone and the performances of treatments used for protection and conservation of historical stone artifacts. The presence of water inside the sample may be visualized by both MRI and X-ray CT. For the treated samples, the different dynamics of water absorption gives indirectly the efficacy of the polymer in the rock.

Indagini diagnostiche della statua lignea della Madonna di Monserrato

The restoration of the wooden statue of Madonna of Montserrat at the Diocesan Museum of Palermo was preceded by a series of chemical-physical and biological investigations which have allowed a better knowledge of the work. In particular the following analyses have been performed on fragment of original material, sampled near the gaps of the wooden statue,: • observations of cross sections to the reflected light Optical Microscope (OM) to identify the stratigraphy and the pictorial materials; • SEM (Scanning Electron Microscopy) observations on cross sections and analysis in microprobe with Energy Dispersive Spectroscopy (EDS) for structural and chemical analysis of the single pictorial laye…