Encontrados 6 documentos, a visualizar página 1 de 1
Luminescent glasses in art
Oliveira, Rosa Maria de; Almeida, Teresa; Matos, António Pires de; Ruivo, Andreia; Antunes, AquinoIn this study the application of luminescent glasses under UV light in artworks is explored. Several lanthanide oxides were used in the glass composition to obtain different colours. A brief comparison with the conventional glass artwork using neon is made. Future conservation was taken into account and the compatibility studies of mixtures of different glasses were studied.
Uranium glass in museum collections
Matos, António Pires de; Lopes, Filipa M.; Ruivo, Andreia; Muralha, Vânia S. F.; Lima, Augusta; Duarte, Pedro; Paiva, Isabel; Trindade, RomãoJournal of Cultural Heritage, nº 9 (2008), p. 64-68 ; The presence of uraniumglass objects in museum and private collections has raised radiation protection concerns resulting from possible exposure to ionizing radiation emitted by this type of object. Fourteen glass objects with different uranium contents were studied. Dose rates (b þ g radiation)were measured with a beta/gamma probe at several distances from...
A brief review of mass spectrometry in cultural heritage
Matos, Antonio Pires de; Marçalo, JoaquimProceedings of the Chemistry and Conservation Science ; In the last decade the great development of mass spectrometry techniques made them ideal tools for the characterization of many materials containing either inorganic or organic compounds. Pigments in paints, main constituents of glass and ceramic objects, enamels and glazes can be characterized by inorganic mass spectrometry. Temperas, varnishes and adhes...
Glass in Cultural Heritage – An Introduction
Matos, Antonio Pires de; Lima, Augusta; Lopes, Filipa; Vilarigues, Márcia; Marçalo, JoaquimProceedings of the Chemistry and Conservation Science ; A brief description of different types of silicate glasses is made and the origin of colour in glasses is discussed. The principles of corrosion in glass, illustrated with a few examples, will be explained. Applications of several techniques in the chemical characterization of glasses will be shown, namely X-ray Fluorescence Spectrometry (XRF), Scanning E...
Real fábrica de vidros de Coina – Chemical analysis of archaeological glass fra...
Matos, Antonio Pires de; Lopes, Filipa M.; Lima, Augusta M; Vilarigues, Márcia; Coroado, João; Carvalho, Catarina; Andrade, AnaActas do 17º Congresso da Associação Internacional para a História do Vidro
Energy-dispersive x-ray fluorescence analysis of modern coloured glasses from M...
Matos, Antonio Pires de; Valério, P; Markowicz, A; Kregsamer, P; Araújo, M F; Chinea-Cano, E; Carvalho, CX-Ray Spectrom. 2003; 32: 396–401 ; The elemental composition (K, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Ba, Nd and Pb) of modern coloured glasses was obtained by energy-dispersive x-ray fluorescence (EDXRF) spectrometry. This nondestructive technique is frequently used in the analysis of historical glass objects. Two reference glasses were also measured to assess the overall accuracy of the EDXRF met...
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