Results 31 to 40 of about 10,135 (271)

Isomeric Ag14 Nanoclusters With Distinct Photophysical and Nanomechanical Properties

open access: yesAdvanced Science, EarlyView.
Ligand‐shell isomerism in atomically precise Ag14 nanoclusters is demonstrated to regulate core distortion, photoluminescence, and mechanical properties. Subtle changes in phosphine ligand arrangement drive a pronounced emission shift from green to red and alter crystal rigidity, revealing a direct structure‐property correlation that offers new design ...
Vivek Yadav   +14 more
wiley   +1 more source

La noción del tiempo en la cultura maya prehispánica

open access: yesLiminar: Estudios Sociales y Humanísticos, 2015
La concepción del tiempo de los mayas prehispánicos se estudia mediante el análisis epigráfico y filológico de textos jeroglíficos bajo los planteamientos teóricos de la escuela italiana de historia de las religiones.
Alexander Wolfgang Voss
doaj   +3 more sources

Más allá del éxito y el fracaso: indios y autoridades en una provincia de la intendencia de Chiapas, 1790-1802

open access: yesProhistoria
Acá se muestran algunos cambios, continuidades, adaptaciones, logros y desaciertos asociados con la implementación en Chiapas del gobierno de los intendentes, en concreto el sistema de repartimientos, a finales del siglo XVIII.
Óscar Javier Barrera Aguilera
doaj   +1 more source

Cavity‐Enhanced Eye‐Readable Detection of 0.1% H2 via Active Modulation of Charge‐Transfer Plasmons

open access: yesAdvanced Science, EarlyView.
A cavity‐structured nanoparticle sensor is developed for highly sensitive, eye‐readable hydrogen detection. Its excellent colorimetric response arises from a hydrogen‐induced charge‐transfer mechanism: reduction of the dielectric oxide shell in H2 triggers a transition from the plasmonic gap mode to the charge‐transfer plasmon mode.
Xuemin Zhang   +9 more
wiley   +1 more source

Multi‐modal Operando Analysis of Lithium–Sulfur Batteries: A Comparative Study on the Influence of Electrolyte Composition

open access: yesAdvanced Energy Materials, EarlyView.
The influence of different electrolytes on Lithium–sulfur batteries is investigated. Multimodal operando analysis, including Raman, UV–vis, and Impedance spectroscopy is used to study degradation mechanisms. The solubility of polysulfides in the electrolyte is crucial for battery capacity and lifetime.
Oliver Löhmann   +3 more
wiley   +1 more source

Decolonialidad indígena en América Latina. Emergencia de la literatura maya

open access: yesLiteratura Mexicana
El pensa miento y prácticas decoloniales presentes en el mundo contemporáneo, contribuyen directa y significativamente en la larga lucha de los pueblos originarios de América por su liberación del orden colonial y la recuperación de sus culturas y ...
José Alejos García
doaj   +1 more source

Mechanical Thrombectomy Versus Medical Management for Large Ischemic Core Stroke Identified before Inter‐Hospital Transfer: A Post Hoc Analysis of the LASTE Trial

open access: yesAnnals of Neurology, EarlyView.
Objective This study assessed the efficacy of thrombectomy in acute ischemic stroke because of large‐vessel occlusion (AIS‐LVO) initially admitted to primary stroke centers (PSC) and subsequently transferred to a comprehensive stroke center (CSC), with a large ischemic core identified before transfer.
Pierre Seners   +258 more
wiley   +1 more source

LA NOCIÓN DE PERSONA ENTRE LOS MAYAS: UNA VISIÓN SEMÁNTICA

open access: yesRevista Pueblos y Fronteras Digital, 2007
El presente trabajo está dedicado a las representaciones culturales de la persona entre los mayas yucatecos. Se enfoca la noción de persona partiendo de las categorías conceptuales contenidas en el vocabulario.
Gabriel Luis Bourdin
doaj   +1 more source

¡Estás Calurosa, te vas a Pasmar!: Niños Mayas como Expertos en Salud y Enfermedad

open access: yesMaya America, 2021
Presentamos resultados de un estudio sobre los saberes y prácticas de niños mayas en torno a salud y enfermedad. El objetivo es describir sus conceptualizaciones sobre la salud, las enfermedades que conocen, sus causas, tratamiento y prevención.
Deira Jiménez-Balam   +2 more
doaj   +1 more source

MAYA [PDF]

open access: yesProceedings of the workshop on ARABIC language processing status and prospects -, 2001
We propose a Question-answering (QA) system in Korean that uses a predictive answer indexer. The predictive answer indexer, first, extracts all answer candidates in a document in indexing time. Then, it gives scores to the adjacent content words that are closely related with each answer candidate.
Harksoo Kim   +3 more
openaire   +1 more source

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