Autorretrato de Amedeo Modigliani do acervo do MAC USP à luz de sua história material

This two-part article (history and analysis, followed by the interpretation of data obtained via analytical techniques) is a study of Amedeo Modigliani’s Self-Portrait (1919, oil/canvas, 100 x 65 cm2), which belongs to the Museu de Arte Contemporânea of the Universidade de São Paulo (MAC USP). By collating documentation on the work’s provenance, critical sources regarding Modigliani’s approach to painting, and technical-scientific (physicochemical and imaging) analyses, we were able to reassess it in light of the articulation between the work’s materiality and composition. We also managed to throw new light on the work’s critical reception in the 1950s, when it arrived in Brazil and received international exposure – at that time, already part of a Brazilian collection – by means of publications and exhibitions.Este artigo em duas partes (histórico e análise, seguida da parte de interpretação dos dados obtidos por técnicas analíticas) apresenta um estudo da obra Autorretrato (1919, óleo/tela, 100 x 65 cm) de Amedeo Modigliani, pertencente ao acervo do Museu de Arte Contemporânea da Universidade de São Paulo (MAC USP). Através do cotejamento entre a documentação de procedência da obra, fontes críticas de abordagem da pintura de Modigliani, com as análises técnico-científicas físico-químicas e de imageamento, foi possível reavaliá-la na articulação entre sua materialidade e sua composição, bem como lançar nova luz sobre sua recepção pela crítica dos anos 1950, quando ela chegou ao Brasil e circulou no contexto internacional por meio de publicações e exposições, já como parte de uma coleção brasileira

Um exemplo de aplicação da Microscopia Raman na autenticação de obras de arte

In the present work, Raman Microscopy was employed in the characterization of the pigments used in a drawing assigned to Tarsila do Amaral, one of the most important Brazilian artists. The work (colored pencil on paper), supposedly produced in the 1920 decade, is of a very simple composition, where blue, green and brown were the colors used. Prussian Blue was found as the blue pigment, whereas green was a mixture of copper phthalocyanine and a yellow dye, probably a diarylide; the brown pigment was a carbonaceous compound. Prussian Blue was replaced by phthalocyanine as pigment since the end of the 1930's and the possibility that it could have been used as pigment in the 1920's can be ruled out

A Simple Method for Optimal DNA Extraction from Different Filamentous Fungi Species Growing on Earthen Walls of ‘Vale Histórico Paulista’, São Paulo, Brazil

This study aims to describe a new simple and efficient method of extracting DNA from filamentous fungi isolated from historical earthen walls. This method involves growing the mycelium on overlapping cellophane discs on solid medium and the disruption of the fungal cell wall by a combined action of liquid nitrogen and a lytic enzyme. The extraction is performed with the PureLink ™ Genomic DNA Mini Kit protocol from Pure Genomic. The full procedure can be completed in two hours. The new genomic DNA extraction protocol provided good quality and quantity of fungal DNA, from fungal mycelium, with an average yield of 27 ng/µL of DNA per sample. Purified DNA samples yielded 25 ng of DNA ready for sequencing. PCR amplifications of the DNA extracted using the new method were more successful than those extracted using the CTAB method. Thus this new extraction protocol is demonstrated to be an effective method for the identification of a wide range of filamentous fungal species that affect the integrity of buildings with earthen architecture.Fil: Fazio, Alejandra Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina. Universidade de Sao Paulo; BrasilFil: Avanzato, María Valeria. Coker University; Estados UnidosFil: Cinto, Isabel Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaFil: Cavicchioli, Andrea. Universidade de Sao Paulo; BrasilFil: Araújo de Faria, Dalva Lúcia. Universidade de Sao Paulo; Brasi

Câmaras climáticas para o envelhecimento acelerado: ação de microambientes sobre bens culturais Environmental chambers for the accelerated ageing: effect of microclimates on cultural heritage

<abstract language="eng">Environmental chambers were designed for the accelerated ageing of materials used in artistic artifacts to study the synergistic action of temperature, humidity, UV and visible radiation and gaseous pollutants. Two inox-steel/PTFE compartments are kept under controlled temperature and relative humidity, whose values are transmitted to a PC, which stores, plots in real time and continuously feedback heating and humidifying devices through logical signals. A borosilicate, or quartz, window allows the irradiation inside the chamber from an external source. A flow of purified air purges the chamber and conveys selected pollutants from an external source. Each independent compartment works under either stationary or cyclic conditions

Núcleos de Ensino da Unesp: artigos 2008

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq