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Fecal records show Maya population affected by climate change
Maya population climate change drought period wet period
2021/8/4
A new study has shown that the size of the Maya population in the lowland city of Itzan (in present-day Guatemala) varied over time in response to climate change. The findings show that both droughts ...
Ancient Maya reservoirs contained toxic pollution（图）
Ancient Maya reservoirs contained toxic pollution
2020/7/17
Findings from research conducted by a University of Cincinnati team suggest that droughts in the ninth century along with pollution of reservoirs likely contributed to the depopulation and e...
Largest, oldest Maya monument suggests importance of communal work（图）
Largest oldest Maya monument suggests importance communal work
2020/6/19
From the ground, it's impossible to tell that the plateau underfoot is something extraordinary. But laser imaging and radiocarbon dating revealed a huge structure, which turned out to be the largest a...
(Re)-territorializing the Maya commons: Conservation complexities in highland Guatemala
Environment sierra madre historical political economic cultural ecology terrain environment indigenous people
2014/10/22
This dissertation is the result of geographic research combining several years of study of Guatemalan culture, society, and history with approximately eight months of fieldwork. Through this work I ha...
Lineament Analysis of Morphostructures of the Uchur-Maya Basin (Southeastern Siberian Platform) from SRTM Data: Relationship with Metallogeny
Space SRTM Survey Lineaments The Uchur-Maya Basin Metallogeny
2013/3/11
Based on digital elevation models SRTM03 and SRTM30_Plus (Shuttle Radar Topography Mission Survey) the technique for detecting major structural elements and elucidating details of the geologic structu...
A combined synchrotron powder diffraction and vibrational study of the thermal treatment of palygorskite-indigo to produce Maya blue
synchrotron powder diffraction palygorskite-indigo Maya blue
2011/11/11
The heating process (30-200 QC) of a palygorskite-indigo mixture has been monitored in situ and simultaneously by synchrotron powder diffraction and Raman spectroscopy. During this process, the dye an...
The Fundamental Guest-Host Interaction in Maya Blue Pigments:DFT-CPMD Calculations
Fundamental Guest-Host Interaction Maya Blue DFT-CPMD Calculations
2011/11/7
The color shift of the Maya Blue(MB) inorganic-organic pigment,obserbed upon moderate heating,reflects fundamental guest-host interactions leading to the unusual stability of Maya Blue.
In-Situ Identification of Palygorskite in Maya Blue Samples Using X-Ray Powder Diffraction
Palygorskite X-Ray Powder Diffraction Maya Blue Samples
2011/11/4
In spite of the abundance of colors found in the murals and other objects that correspond to the Classic Mayan period (600-900 A.D.), a peculiar hue captured the interest of researchers. The most well...
Crystal structure refinement of a sepiolite/indigo Maya Blue pigment using molecular modelling and synchrotron diffraction
sepiolite indigo Maya Blue pigment molecular mechanics Rietveld method
2011/11/7
Maya Blue is an artificial pigment used in Pre-Columbian America, renowned for its chemical stability. The pigment can be considered a precursor of modern inclusion compounds as a hosting microporous ...
Spectroscopic characterization of a sepiolite-based Maya Blue pigment
Maya Blue sepiolite indigo spectroscopy host/guest interaction
2011/11/7
Maya blue, an ancient pigment used by Mayas in Mesoamerica, can be considered an ancestor of modern nano-composites as it forms by grinding and heating the guest indigo molecule with a hosting clay fr...
REMOCIóN DE SEMILLAS, HERBIVORíA Y RECLUTAMIENTO DE PLáNTULAS DE BROSIMUM ALICASTRUM (MORACEAE) EN SITIOS CON MANEJO FORESTAL CONTRASTANTE DE LA SELVA MAYA, QUINTANA ROO, MéXICO
Brosimum alicastrum regeneration surviving
2015/11/13
The impact of timber extraction was evaluated on Brosimum alicastrum, particularly on seed removal, recruitment and
seedling herbivory. A series of experimental exclusions were established in logged...
Beyond the buildings: Formation processes of ancient Maya houselots and methods for the study of non-architectural space
Activity areas Ethnoarchaeology Formation processes Space Chunchucmil Maya Refuse Biomarkers Coprostanol
2011/11/14
The success of activity areas research in domestic contexts has highlighted the need for archaeologists working in the tropics to explore both indoor and outdoor spaces. The preservation of houselot b...
Synchrotron and Simulations Techniques Applied to Problems in Materials Science: Catalysts and Azul Maya Pigments
XAFS WAXS SAXS XANES Catalysts Maya Blue
2011/11/10
Development of synchrotron techniques for the determination of the structure of disordered, amorphous and surface materials has exploded over the past twenty years due to the increasing availability o...
Maya Blue Paint: An Ancient Nanostructured Material
Maya Blue Paint Nanostructured Material
2011/11/8
Maya blue paint was often used in Mesoamerica. The origin of its color and its resistance to acids and biocorrosion have not been fully understood. High-resolution transmission electron microscopy, el...