3 documents found, page 1 of 1
Roman coins at the edge of the Negev: characterisation of copper alloy artefact...
Peters, M; Goren, Y; Fabian, P; Bottaini, C; Grassini, S; Angelini, E; Mirao, jThe research presented in this paper focused on the preliminary non- and semi-destructive analysis of copper alloys, corrosion, and soil components from a Roman archaeological site in Israel. Investigations using portable X-ray fluorescence, X-ray diffraction and scanning electron microscopy with energy dispersive spectroscopy as well as micromorphological analyses were carried out to gain a better understandin...
Provenance study of the limestone used in the construction and restoration of t...
Ding, Y; Mirão, J; Redol, P; Dias, L; Moita, P; Angelini, E; Grassini, S; Schiavon, NTo assess the provenance of the limestones used in the construction and restoration of the Batalha Monastery in central Portugal, stone samples collected from the monument and from five limestone quarries in the region surrounding the building were investigated by energy-dispersive X-ray fluorescence spectroscopy (ED-XRF), powder X-ray diffractometry (PXRD) and thermogravimetric analysis (TGA). Ca-Sr binary dia...
The inhibition of biodegradation on building limestone by plasma etching
Schiavon, Nicola; Caldeira, A.T.; Grassini, S; Ding, Y; Salvador, CátiaPlasma etching is an innovative technique that has been recently applied in the cleaning of soiled archaeological objects. This research investigated the use of low-pressure plasma etching in cleaning microbial contaminations on an oolitic limestone from an UNESCO World Heritage listed monument: the Batalha Monastery in Central Portugal. The cleaning effect was assessed by FTIR, SEM, optical microscope, and cel...