Close Document Image Close Document Printer Image Print This Document! Conservation Information N... more Close Document Image Close Document Printer Image Print This Document! Conservation Information Network (BCIN). Author: Carballo, Jorgelina; Monteiro, Monteiro; Coelho, Sofia Thenaisie Title Article/Chapter: "Os efeitos ...
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2004
The prints are fragile and delicate art objects that need for its examination a suitable techniqu... more The prints are fragile and delicate art objects that need for its examination a suitable technique for “in situ”, non-destructive and rapid analyses. The energy dispersive X-ray Fluorescence (EDXRF) spectrometry with portable instrumentation offers these analytical properties. In this work we present the EDXRF analyses of eight engravings elaborated with different techniques (etching and heliogravure) from the 17th to 20th centuries. The characterization of the paper is directly done from its EDXRF spectra, whereas the inks are characterized by the ink plus paper analysis after subtracting the background from the paper spectrum. Inorganic components of the paper engravings and inks have been identified from the EDXRF spectra and the results are discussed. Also, we present EDXRF analyses for the identification of inorganic components from six samples of modern inks.
Introdução Da colecção de arte sacra do Museu de Santa Maria de Lamas, no norte de Portugal, que ... more Introdução Da colecção de arte sacra do Museu de Santa Maria de Lamas, no norte de Portugal, que tem vindo a ser tratada na Escola das Artes da Universidade Católica, no Porto, faz parte uma escultura sobre madeira, de vulto pleno, dourada e policromada, com 115 cm de altura, que representa Santo Estêvão de pé, em posição frontal, com ligeiro avanço do pé direito, que se vislumbra sob a orla da alva (Fig. 1). De autor desconhecido e história custodiai incerta e sem registros, esta imagem exibe linhas formais e compositivas enquadráveis na produção da imaginária portuguesa da primeira metade de Setecentos. Apresenta traços pouco eruditos em termos formais e o estatismo e rigidez da pose revelam uma tendência popularizante na execução do suporte. Fisionomicamente a indumentária domina a anatomia, cujas formas submergem na rigidez da representação da dalmática (veste litúrgica dos diáconos). O carácter hirto é contrariado apenas pela colocação dos membros superiores de forma a sustenta...
In this article, analytical results will be presented and discussed regarding a selected set of f... more In this article, analytical results will be presented and discussed regarding a selected set of figurines from the ancient Maya settlement of La Blanca in Petén, Guatemala. The objective is to characterize the ceramic material by two analytical complementary techniques: X-ray diffraction (XRD) and total reflection X-ray fluorescence (TXRF). The data obtained by means of both XRD and TXRF were compared and analyzed by multivariate statistical techniques in order to obtain sample groups according to their chemical composition. The results of this archaeometric study have been compared to those that have been obtained through macroscopic characterization by means of the traditional classification system know as Type-Variety. Discordances have been found between the clusters obtained by the Type-Variety classification system and the multivariate classification procedures performed on analytical data.
Close Document Image Close Document Printer Image Print This Document! Conservation Information N... more Close Document Image Close Document Printer Image Print This Document! Conservation Information Network (BCIN). Author: Carballo, Jorgelina; Monteiro, Monteiro; Coelho, Sofia Thenaisie Title Article/Chapter: "Os efeitos ...
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2004
The prints are fragile and delicate art objects that need for its examination a suitable techniqu... more The prints are fragile and delicate art objects that need for its examination a suitable technique for “in situ”, non-destructive and rapid analyses. The energy dispersive X-ray Fluorescence (EDXRF) spectrometry with portable instrumentation offers these analytical properties. In this work we present the EDXRF analyses of eight engravings elaborated with different techniques (etching and heliogravure) from the 17th to 20th centuries. The characterization of the paper is directly done from its EDXRF spectra, whereas the inks are characterized by the ink plus paper analysis after subtracting the background from the paper spectrum. Inorganic components of the paper engravings and inks have been identified from the EDXRF spectra and the results are discussed. Also, we present EDXRF analyses for the identification of inorganic components from six samples of modern inks.
Introdução Da colecção de arte sacra do Museu de Santa Maria de Lamas, no norte de Portugal, que ... more Introdução Da colecção de arte sacra do Museu de Santa Maria de Lamas, no norte de Portugal, que tem vindo a ser tratada na Escola das Artes da Universidade Católica, no Porto, faz parte uma escultura sobre madeira, de vulto pleno, dourada e policromada, com 115 cm de altura, que representa Santo Estêvão de pé, em posição frontal, com ligeiro avanço do pé direito, que se vislumbra sob a orla da alva (Fig. 1). De autor desconhecido e história custodiai incerta e sem registros, esta imagem exibe linhas formais e compositivas enquadráveis na produção da imaginária portuguesa da primeira metade de Setecentos. Apresenta traços pouco eruditos em termos formais e o estatismo e rigidez da pose revelam uma tendência popularizante na execução do suporte. Fisionomicamente a indumentária domina a anatomia, cujas formas submergem na rigidez da representação da dalmática (veste litúrgica dos diáconos). O carácter hirto é contrariado apenas pela colocação dos membros superiores de forma a sustenta...
In this article, analytical results will be presented and discussed regarding a selected set of f... more In this article, analytical results will be presented and discussed regarding a selected set of figurines from the ancient Maya settlement of La Blanca in Petén, Guatemala. The objective is to characterize the ceramic material by two analytical complementary techniques: X-ray diffraction (XRD) and total reflection X-ray fluorescence (TXRF). The data obtained by means of both XRD and TXRF were compared and analyzed by multivariate statistical techniques in order to obtain sample groups according to their chemical composition. The results of this archaeometric study have been compared to those that have been obtained through macroscopic characterization by means of the traditional classification system know as Type-Variety. Discordances have been found between the clusters obtained by the Type-Variety classification system and the multivariate classification procedures performed on analytical data.
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Papers by Jorgelina Carballo