7 documents found, page 1 of 1
Produção e composição química da folhada em soutos submetidos a diferentes técn...
Pires, A. L.; Guilherme, A.; Tavares, M. C.; Raimundo, F.Para avaliar o efeito de várias técnicas de mobilização do solo na produção de folhada foram estabelecidas parcelas de estudo num souto localizado em Macedo de Cavaleiros, tendo-se aplicado três tratamentos: três escarificações anuais (sistema de mobilização tradicional) (T1), duas gradagens anuais (T2) e mobilização nula (T3). A recolha da folhada efectuou-se durante três anos, de Abril de 1996 a Março de 1999...
Micro-XRF for characterization of Moroccan glazed ceramics and Portuguese tiles
Guilherme, A.; Manso, M.; Pessanha, S.; Zegzouti, A.; Elaatmani, M.; Bendaoud, R.; Coroado, J.; Santos, J. M. F. dos; Carvalho, M. L.
Study of Mural Paintings Using In Situ XRF, Confocal Synchrotron-m-XRF, m-XRD, ...
Valadas, S.; Candeias, A.E.; Mirão, J.; Tavares, D.; Coroado, J.; Simon, R.; Silva, A.S.; Gil, M.; Guilherme, A.; Carvalho, M.L.In this work, we present the results of an analytical method developed for detailed pigment identification, stratigraphy, and degradation of the paint layers of mural paintings applied in the study of the 17th century frescoes from the Misericordia Church of Odemira ~Southwest Portugal!. In situ X-ray fluores- cence spectrometry analyses were performed on three panels of the mural paintings and complemented by ...
Pigment characterization and state of conservation of an 18th century fresco in...
Gil, M.; Carvalho, M.L.; Seruya, A.; Ribeiro, I.; Alves, P.; Guilherme, A.; Cavaco, A.; Mirao, J.; Candeias, A.This article describes a study carried out on a mural painting in the Convent of Santo Antonio dos Capuchos in the town of Estremoz (southern Portugal). Experimental work was undertaken to identify pigments and to elicit hypothesis about their local origin. Another aim was to ascertain the painting technique (binders, stratigraphy) and to try to investigate the causes that led to the deterioration of the blue a...
Characterization of Japanese color sticks by energy dispersive X-ray fluorescen...
Manso, M.; Valadas, S.; Pessanha, S.; Guilherme, A.; Queralt, I.; Candeias, A.E.; Carvalho, M.L.This work comprises the use of energy dispersive X-ray fluorescence (EDXRF), X-ray diffraction (XRD) and Fourier transformed infrared (FTIR) techniques for the study of the composition of twentieth century traditional Japanese color sticks. By using the combination of analytical techniques it was possible to obtain information on inorganic and organic pigments, binders and fillers present in the sticks. The col...
X-ray fluorescence (conventional and 3D) and scanning electron microscopy for t...
Guilherme, A.; Coroado, J.; Santos, J. M. F. dos; Lühl, L.; Wolff, T.; Kanngießee, B.; Carvalho, M. L.This work shows the first analytical results obtained by X-Ray Fluorescence (XRF) (conventional and 3D) and Scanning Electron Microscopy with Energy Dispersive System (SEM-EDS) on original Portuguese ceramic pieces produced between the 16th and 18th centuries in Coimbra and Lisbon. Experts distinguished these productions based only on the color, texture and brightness, which originates mislabeling in some cases...
Study of mural paintings using in-situ XRF, confocal Synchrotron-μ-XRF, μ-XRD, ...
Valadas, S.; Candeias, A.; Mirão, J.; Taveres, D.; Coroado, J.; Simon, R.; Santos Silva, A.; Gil, M.; Guilherme, A.; Carvalho, M. L.In this work, we present the results of an analytical method developed for detailed pigment identification, stratigraphy, and degradation of the paint layers of mural paintings applied in the study of the 17th century frescoes from the Misericordia Church of Odemira (Southwest Portugal). In situ X-ray fluorescence spectrometry analyses were performed on three panels of the mural paintings and complemented by co...