A5085043708- Geomagnetism and Paleomagnetism Studies
- Geology and Paleoclimatology Research
- Geophysical and Geoelectrical Methods
- Geological and Geochemical Analysis
- Carcinogens and Genotoxicity Assessment
- Archaeology and ancient environmental studies
- Pesticide Exposure and Toxicity
- Geochemistry and Geologic Mapping
- Maritime and Coastal Archaeology
- Magnetic and Electromagnetic Effects
- Ancient Mediterranean Archaeology and History
- Chemical Safety and Risk Management
- earthquake and tectonic studies
- Analytical Chemistry and Chromatography
- High Altitude and Hypoxia
- Analytical Chemistry and Sensors
- Urban Planning and Valuation
- Paleontology and Evolutionary Biology
- Aldose Reductase and Taurine
- Characterization and Applications of Magnetic Nanoparticles
- Paleontology and Stratigraphy of Fossils
- Nitric Oxide and Endothelin Effects
- Geological and Geophysical Studies
- Glutathione Transferases and Polymorphisms
- Toxic Organic Pollutants Impact
Universidad Nacional Autónoma de México
2019-2023
National Institute of Anthropology and History
2019
Universitat de Miguel Hernández d'Elx
2000-2009
Abstract In Western Eurasia, the first millennium BCE is characterized by fastest secular variation of Earth Magnetic Field observed over last millennia and a geomagnetic anomaly centered on Middle East. On global scale, dipolar field during this period remains poorly constrained because lack data in other geographical areas. Here, we presented 23 new mean archaeointensity ceramic sherds dated between 1500 200 CE from Chalcatzingo archaeological site Central Mexico. Archaeointensities were...
A purge-and-trap gas chromatographic (PT-GC) method for determining styrene concentrations in urine and blood samples has been used the biological monitoring of workers exposed to acetone. Blood were collected from 34 individuals both solvents at end a 4-h shift measured (Su), (Sb), two major urinary metabolites, mandelic acid (MA) phenylglyoxylic (PGA). second sample was taken beginning next shift. Environmental exposure using passive personal GC. Urinary excretion MA PGA by...
We investigate the origin of magnetite nanoparticle aggregates (MNAs) from Peña Colorada iron-ore mining district (Mexico) to devise a nature inspired synthesis process. Three types samples were used: natural MNAs recovered mine, concentrated microparticles as reference material, and thin berthierine films used synthesize MNAs. The chemical, mineralogical, crystallographic rock magnetic properties determined by polarized microscopy, high-resolution transmission electron microprobe, X-ray...
We report a magnetic study of two preceramic hearths located at the southern region Mexico City. Thermal demagnetization was applied between 200 to 540 °C define remanent magnetization components. The maximum unblocking temperature secondary component reached due last heating identified in most samples. They were used develop thermomagnetic anomaly source maps. direction this place blocks their cooling spot and configurate real primal map produced by thermoremanent acquired. A protocol...
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Abstract Several regional secular variation curves of the geomagnetic field have been proposed for Mexico over last millennia. Despite a fairly large number archeomagnetic data, these remain imprecise because an uneven quality and geographic distribution, with lack data in Northern Mexico. Nine pottery kilns were sampled Casas de Fuego, archeological site Chihuahua state. These belong to Grandes culture use between 1250 1450 CE. Rock magnetic experiments indicate that main phase is Ti‐poor...
A comprehensive paleomagnetic study of the La Mora Formation fluvial sediments, presumably deposited during Late Triassic-Early Jurassic, over Mixteca terrane, allows us to document most likely Early Mesozoic paleoposition Acatlán-Oaxaquia block among mosaic peri-Gondwanan blocks just before and Pangea break-up. The oxide microscopy rock magnetic studies confirm that carrier is titanomagnetite, hematite partially almost totally replacing titanomagnetite (maghemite), pigmentary hematite, in...