A5005632611- Cultural Heritage Materials Analysis
- Building materials and conservation
- Conservation Techniques and Studies
- X-ray Spectroscopy and Fluorescence Analysis
- Archaeology and ancient environmental studies
- Nuclear Physics and Applications
- Electron and X-Ray Spectroscopy Techniques
- Geological and Geochemical Analysis
- Mineralogy and Gemology Studies
- Ion-surface interactions and analysis
- X-ray Diffraction in Crystallography
- Latin American history and culture
- Metallurgy and Cultural Artifacts
- Metal and Thin Film Mechanics
- Crystal Structures and Properties
- Diamond and Carbon-based Materials Research
- Luminescence Properties of Advanced Materials
- High-pressure geophysics and materials
- Advanced Materials Characterization Techniques
- Mexican Socioeconomic and Environmental Dynamics
- Archaeological and Geological Studies
- Hygrothermal properties of building materials
- Calcium Carbonate Crystallization and Inhibition
- Geological and Tectonic Studies in Latin America
- Botany and Geology in Latin America and Caribbean
Universidad Nacional Autónoma de México
2015-2024
National Institute of Anthropology and History
2024
Universidad Autónoma de la Ciudad de México
2018
Instituto de Física del Sur
2017
University of Delaware
2005
University of Namur
1995-1998
This work presents the portable X-ray system SANDRA (Sistema de Analisis No Destructivo por RAyos X or System for Non Destructive Analysis using X-rays) developed at Physics Institute of UNAM, Mexico, study Mexican cultural heritage collections. The fluorescence (XRF) device can use 75 W Mo, Rh and tubes Amptek Si-PIN Cd-Te detectors that are selected combined depending on elemental range detection requirements specific problem to be studied. In this paper, a full description...
Dyes were used in Mexico since early pre‐Hispanic periods for coloring of fibers, codex writing, and mural paintings, among other purposes. From the wide variety Mexican dyes, only a handful has been studied at length. Moreover, few studies had devoted to identification these substances artistic or historical objects, part, because lack suitable technique that complies with nondestructive microdestructive requirements involves working such objects. Surface‐enhanced Raman spectroscopy (SERS)...
Abstract This work concerns the study of colors and dyes identified on archaeological textiles from Atacama Desert. The different garments ornaments come excavation two important pre-Columbian cemeteries Tarapacá region: Tarapacá-40 attributed to Formative period (1100 BC–660 AD) Pica-8 Late Intermediate (900–1450 AD). For first time, a multi-analytical approach with non-invasive techniques using FORS SERS was applied samples less than 2 cm length for physicochemical characterization raw...
Abstract Greenstones were highly appreciated in pre‐Hispanic Mesoamerica. Most of the finest green artifacts worked jadeite and other minerals such as serpentine nephrite. Jadeite, most precious stone ancient Mesoamerica, was widely used traded since Preclassic Horizon (1500 B.C.). The main beds are located Maya region, Motagua area Guatemala. In this work, three pieces a necklace greenstones from an offering (corresponding around 155 A.D.) discovered extensive excavation carried out...
In humans, the growth pattern of acellular extrinsic fibre cementum (AEFC) has been useful to estimate age-at-death. However, structural organization behind such a remains poorly understood. this study tooth from seven individuals Mexican modern skeletal series were analyzed with aim unveiling AEFC collagenous and mineral structure using multimodal imaging approaches. The collagen fibres was first determined using: light microscopy, transmission electron microscopy (TEM), tomography, plasma...
Two species of fossil polydesmidan millipedes (Diplopoda: Polydesmida) embedded in amber are described from Miocene strata near Simojovel, the Chiapas Highlands, Mexico. Maatidesmus paachtun gen. et sp. nov., placed into Chelodesmidae Cook, 1895, and Anbarrhacus adamantis assigned family Platyrhacidae Pocock, 1895. Morphological data specimens have been recovered using 3D X-ray micro-computed tomography regular to infrared-reflected microscopy. Both recognizable as new primarily but not...
Colonial panel paintings constitute an essential part of Latin-American cultural heritage. Their study is vital for understanding the manufacturing process, including its evolution in history, as well authorship, dating and other information significant to art history conservation purposes. Raman spectroscopy supplies a non-destructive characterization tool, which can be implemented situ analysis, via portable equipment. Specific methodologies must developed, comprising elaboration reference...
A fossil millipede representative of the order Stemmiulida is described on basis a well-preserved adult female trapped in amber from Miocene Simojovel, Chiapas, south-eastern México. The specimen named as Parastemmiulus elektron, new genus and species. As observed extant stemmiulids, this shows reduced number ocelli, distal larger than proximal, well total 46 trunk segments including 2 apodous front telson. head ancient stemmiulid has three ocelli Tömösváry organ, characteristics not...
Adobe masonry is one of the oldest construction systems still in use today, Mexico has an enormous cultural heritage with traditional adobe houses being very representative rural communities and their culture. The 2017 Puebla Earthquake on September 19th struck country causing loss, destruction, damage historic buildings several Mexican states, earthen dwellings most vulnerable structures to these events. fast abandonment local materials techniques entails further research regarding...
Abstract A new indium yttrium germanate presenting the thortveitite structure with symmetry described by space group C2/ m (No. 12) has been prepared high temperature solid state reaction as polycrystalline powder material. This crystallizes in monoclinic system, cell parameters a = 6.8286(1) Å, b 8.8836(2) c 4.9045(1) β 101.8340(7)º, V 291.195(9) Å 3 and Z 2. The was characterized X-ray diffraction Rietveld refinement of pattern. In 3+ Y +3 cations occupy same octahedral site forming...
Abstract In pre‐Hispanic Mesoamerica, pigments and dyes were used in the elaboration of a large variety colored objects. Obtaining information regarding objects' material composition is useful restoration preservation processes, as well for recovering knowledge its production technology context history object. Yellow colors have been obtained from Mexican natural resources. Although mineral yellow pigments, such orpiment oxides, are relatively easy to identify by nondestructive noninvasive...