Results 21 to 30 of about 10,135 (271)

Juan Pedro Viqueira. María de la Candelaria: india natural de Cancuc.

open access: yesAnuario Colombiano de Historia Social y de la Cultura, 1995
Juan Pedro Viqueira. María de la Candelaria: india natural de Cancuc. México: Fondo de Cultura Económica, 1993. 91 páginas.
Mario Humberto Ruz
doaj   +2 more sources

Site Density Governs Switching Reactivity Regimes During Aerobic C─H Oxidation in Mn Single‐Atom Photocatalysts

open access: yesAngewandte Chemie, EarlyView.
Increasing the density of isolated manganese (Mn) atoms in carbon nitride (CNx) photocatalysts does not continuously improve performance. Instead, beyond a critical loading, the polymer support reorganizes, altering charge‐carrier dynamics and oxygen activation while preserving atomic dispersion.
Viktoria Velichko   +14 more
wiley   +2 more sources

The Maya Forest: Destroyed or cultivated by the ancient Maya? [PDF]

open access: yesProceedings of the National Academy of Sciences, 2010
Both academic and popular perceptions concerning the relationship between the Maya (ancient and modern) and the Maya Forest in which their culture developed and persisted for more than three millennia are varied and continuously subject to change (1).
openaire   +2 more sources

Xibalba, the Place of Fear: Caves and the Ancient Maya Underworld

open access: yesArys. Antigüedad, Religiones y Sociedades, 2018
Las cuevas eran un elemento destacado de la cosmología maya que encarnaban el inframundo de Xibalba. Como describe el mito, su propio nombre significa “lugar del miedo o el terror”.
Holley Moyes
doaj   +1 more source

Excepcional documento sobre arqueología maya escrito por Lorenzo De Zavala

open access: yesLiminar: Estudios Sociales y Humanísticos
Consultando documentos sobre México en los acervos de la Universidad de Texas en Austin, encontré cuatro textos del constituyente y vicepresidente de la república de ese estado, hoy de Estados Unidos, Lorenzo de Zavala sobre arqueología maya, totalmente
Ana Luisa Izquierdo
doaj   +1 more source

La práctica biocultural de la milpa maya y los derechos humanos en Yucatán

open access: yesRevista Latinoamericana de Derechos Humanos, 2023
El desarrollo de las comunidades mayas depende, grandemente, del medio natural, y del modelo agrícola de roza, tumba y quema basado en la milpa, lo que representa el sistema biocultural milenario que les brinda sustento.
Eduardo Adolfo Batllori Sampedro
doaj   +1 more source

Uma análise antropológica das emergentes práticas discursivas das mulheres intelectuais mayas da Guatemala (1988 - 2008) [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-graduação em Antropologia Social, Florianópolis, 2010Esta dissertação pretende revelar como os processos econômicos, políticos e ...
García, Dina Susana Mazariegos
core  

Wavelength‐ and Helicity‐Reconfigurable Circularly Polarized Optical Diodes Enabled by Molecular Photoswitches

open access: yesAdvanced Materials, EarlyView.
All‐optical, photoswitchable diode‐type device for tunable nonreciprocal (asymmetric) transmission of CPL across a broad spectrum of light is demonstrated using molecular motor (photoswitch)‐doped cholesteric liquid crystals (CLCs) sandwiched between polyvinyl alcohol (PVA) and polydopamine (PDA)‐PVA composite layers.
Chaoguang Ye   +11 more
wiley   +1 more source

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

open access: yesAdvanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale   +6 more
wiley   +1 more source

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