Results 21 to 30 of about 86,390 (257)

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou   +3 more
wiley   +1 more source

Posição prona na pandemia de COVID-19

open access: yesClinical and Biomedical Research
Introduction: The COVID-19 pandemic rapidly overcrowded hospitals and overwhelmed every aspect of the healthcare systems worldwide, presenting unprecedented challenges for physicians on the front lines managing the increasing number of patients with ...
Jonas Wolf   +6 more
doaj   +1 more source

El futbol como vehículo para la formación en valores

open access: yesEntretextos, 2014
La naturaleza y características del futbol lo convierten en un deporte popular, accesible, fácil y divertido. Tiene todas las características del juego, por eso puede atrapar a las personas de todas las edades.
Gaudencio Rodríguez Juárez
doaj   +1 more source

Real estate bubbles: a preventive model for Asunción’s real estate market. Period 1995-2015

open access: yesPoblación y Desarrollo, 2021
This research seeks to answer the main question on whether there was a real estate bubble in the city of Asunción during the years from 1995 to 2015. In addition to the analysis of the evolution of the real estate market price, the fundamentals of the ...
Fernando Aníbal Escobar Espínola   +1 more
doaj   +1 more source

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler   +4 more
wiley   +1 more source

La filosofía ante los desafíos actuales

open access: yesMediaciones Sociales, 2015
La filosofía ha sido una forma de entender, y en algunos casos de tratar de transformar la realidad a partir de la propia experiencia vital, del propio mundo y del propio tiempo.
Alejandro Serrano Caldera
doaj   +1 more source

University learning in the context ASPO (Social, Preventive and Compulsory Isolation)

open access: yesRevista de Psicología, 2020
This article presents a descriptive approach to the student experience of university learning in the context of ASPO (Preventive and Mandatory Social Isolation) due to the Covid-19 pandemic.
Natalia Soledad Petric
doaj   +1 more source

Decoupling Activation and Preservation: Architectural Design Principles of Organic Frameworks for Selective Photocatalytic Methane Oxidation

open access: yesAdvanced Materials, EarlyView.
Selective methane (CH4) photooxidation emerges from architectural decoupling of activation and preservation. Programmable organic semiconductor frameworks spatially organize oxidative flux and intermediate residence, separating reaction zones from product domains to synchronize activation strength with stabilization and establish a selective oxidation ...
Minxian Zhang   +5 more
wiley   +1 more source

High‐Performance Bio‐Glue From the Berries of a Parasitic Plant

open access: yesAdvanced Materials, EarlyView.
We report a fully bio‐based adhesive derived primarily from a (poly)saccharide extract obtained from the berries of the hemi‐parasitic plant mistletoe (Viscum album), supplemented with tannic and malic acid without any further chemical functionalization.
Ufuk Gürer   +8 more
wiley   +1 more source

El nuevo mercado de valores latinoamericanos

open access: yesThēmis, 2000
En el presente artículo, los autores presentan una visión panorámica de las principales características del Mercado de Valores Latinoamericanos, tales como sus funciones, marco legal, ventajas, organización, entre otras, así como su importancia y su ...
Luis de Carlos, Fernando Calbacho
doaj  

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