A5083459912- Cultural Heritage Materials Analysis
- Building materials and conservation
- Conservation Techniques and Studies
- Amazonian Archaeology and Ethnohistory
- Agricultural and Food Sciences
- Petroleum Processing and Analysis
- Chemistry and Chemical Engineering
- Fusion and Plasma Physics Studies
- Environmental Sustainability and Education
- melanin and skin pigmentation
- Historical and Cultural Archaeology Studies
- bioluminescence and chemiluminescence research
- Metallurgy and Cultural Artifacts
- Various Chemistry Research Topics
- Pigment Synthesis and Properties
- Archaeology and Cultural Heritage
- Date Palm Research Studies
- Gold and Silver Nanoparticles Synthesis and Applications
- Ancient Egypt and Archaeology
- Electron and X-Ray Spectroscopy Techniques
University of California, Los Angeles
2023-2024
Heritage University
2023-2024
Universidade Federal de Pelotas
2017-2021
Getty Conservation Institute
2021
Universidade de São Paulo
2010-2019
Universidade Cidade de São Paulo
2010-2016
University of Aveiro
2015
Blue is one of the most challenging colors for humans to produce and important in art history. Literature from Tikuna/Magüta culture, Amazon Forest, suggests use chemical reactions between juice naīcü fruit iron a blue colorant still unknown among technical historians conservation scientists. Additionally, coloring materials people were never chemically investigated. Therefore, this manuscript presents investigation colorants twenty-two masks stamp used decorate similar items. Collections...
The Brazilian Legal Amazon region is divided into at least 155 ethnic groups and has the largest concentration of Indigenous people globally. It represents one most extraordinary levels human, cultural, artistic diversity, but its material culture well-studied. This especially true in technical art history conservation science, largely due to (1) limited international awareness richness materials techniques used by these (2) limitations knowledge access for many scientists literature usually...
Esculturas policromadas de Pb do Museu Oratório em Ouro Preto (Minas Gerais, Brasil), expostas um mostruário vidro foram severamente degradadas.Os produtos corrosão analisados por difratometria raios X (XRD), espectroscopia no infravermelho com transformada Fourier (FTIR), microscopia eletrônica varredura (SEM), fluorescência dispersão energia (EDX) e Raman, constatou-se a formação majoritária carbonatos formiatos Pb.Embora sejam comuns na atmosférica Pb, podem ser formados tanto pela ação...
Abstract Raman microspectroscopy is a powerful analytical technique in cultural heritage. However, results are often compromised by luminescence interference and poor sensitivity. Surface‐enhanced spectroscopy (SERS) an alternative that can enhance the signal quench luminescence, but interaction of analyte metal substrate produces altered spectra. Shell‐isolated nanoparticle‐enhanced (SHINERS) promising modification SERS encases nanoparticles ultrathin inert shells. As consequence, it...
AN INTERESTING CASE STUDY.A few years ago, during a storage room clean out at the University of São Paulo (Biblioteca do Conjunto das Químicas), several items were discarded, including apparently modern worthless large-scale reproductions paintings by famous painters.A member staff retrieved these from litter bin, one which was carefully inspected and non-destructively analyzed spectroscopic techniques (Raman XRF).The results showed that instead being reproduction gouache "Clinique de...
ARTWORKS.In the present work, Raman Microscopy was employed in characterization of pigments used a drawing assigned to Tarsila do Amaral, one most important Brazilian artists.The work (colored pencil on paper), supposedly produced 1920 decade, is very simple composition, where blue, green and brown were colors used.Prussian Blue found as blue pigment, whereas mixture copper phthalocyanine yellow dye, probably diarylide; pigment carbonaceous compound.Prussian replaced by since end 1930's...
Nesta curta introdução apresenta-se uma breve contextualização da Arqueometria e um relato realização, atividades trabalhos apresentados no V Congresso Latino-Americano de (V CLA). Mostra-se quantitativamente as origens dos diferentes (no contexto seus países), suas áreas concentração dentro técnicas analíticas empregadas. Comenta-se brevemente, ao final, os publicados neste dossiê temático, presente edição revista Cadernos do LEPAARQ.
METAL CORROSION PRODUCTS.The understanding of chemical and physical behavior materials, especially metals their alloys, is utmost importance for industrial technological applications, development new materials preservation cultural heritage.The use complementary analytical techniques has allowed a better corrosion mechanisms, results obtained by Raman micro-spectroscopy, example, have been complemented FTIR XRD.When focusing on the proposition strategies, processes very initial steps...
The preservation of Cultural Heritage is undoubtedly important for the society, and Conservation Science must dedicate itself to attempts minimize inherent processes degradation which cultural assets are susceptible.In this context, evaluation chemical aspects composition objects their relation with environment where they located essential understanding decay signs observed, supporting establishment effective conservation strategies.These characteristics demonstrated here by vibrational...
Bens culturais materiais, sejam eles móveis ou imóveis, são constituídos por matéria, que é passível de sofrer processos degradação. Esses levam à perda informações materiais e imateriais geralmente decorrentes reações químicas físicos, associados não presença micro-organismos. Eles dependem, além da composição química estrutura física do bem, das características ambiente e/ou microambiente os cercam. Considerando isso, portanto, na temática seminário “Ciência conservação o uso ferramentas...
Resumo: Neste trabalho - que tem foco na contextualização da química e no impacto essa atividade pode ter preservação patrimonial alfabetização científica propôs-se, elaborou-se, aplicou-se avaliou-se uma objetivou promover o ensino de por meio do patrimônio cultural ao mesmo tempo em suscitou a área aplicada bens culturais. O trabalho, desenvolvido equipe interdisciplinar, fundamentou-se integração metodologias ciências educação para patrimônio, contemplando conceitual químico as...