Results 181 to 190 of about 1,604,591 (318)

A PRODUÇÃO CIENTÍFICA DOS ENFERMEIROS NAS REUNIÕES DA SOCIEDADE BRASILEIRA PARA O PROGRESSO DA CIÊNCIA [PDF]

open access: gold, 1984
Nilce Piva Adami   +4 more
openalex   +1 more source

Unravelling the Atomic Structure of a Metal‐Covalent Organic Framework Assembled from Ruthenium Metalloligands

open access: yesAdvanced Materials, Volume 37, Issue 13, April 2, 2025.
Metal‐covalent organic frameworks (MCOFs) are novel porous materials that exhibit the advantages of covalent and metal‐organic frameworks. However, it is extremely difficult to resolve their atomic structure and better understand their structure‐properties relation. This work utilizes a synergistic combination of advanced microscopy, spectroscopic, and
Seán Hennessey   +11 more
wiley   +1 more source

Traceless Photopolymerization with Non‐Pulsed Red Light Enables 3D‐Printable Cell‐Laden Hydrogels

open access: yesAdvanced Materials, EarlyView.
The paper presents a red‐light‐induced polymerization process, initiated by the FDA‐approved dye methylene blue and the cytocompatible co‐initiator triethanolamine, for fabricating hydrogels. This photopolymerization process is oxygen‐tolerant, cytocompatible, and, most importantly, leaves no color traces, resulting in completely transparent scaffolds.
Ali Eftekhari   +10 more
wiley   +1 more source

CIÊNCIA E TECNOLOGIA COMO QUINTA EXPRESSÃO DO PODER NACIONAL

open access: bronze, 1969
Gilberto Alves da Silva   +1 more
openalex   +2 more sources

Ciência e Tecnologia. O grande desafio [PDF]

open access: diamond, 1980
Lynaldo Cavalcanti de Albuquerque
openalex   +1 more source

Electron Extraction Optimization for Carbon‐Based Hole‐Conductor‐Free Perovskite Photovoltaics With Record 1.41 V VOC

open access: yesAdvanced Materials, EarlyView.
A gradient electron energy level strategy is constructed to reduce voltage losses in planar HTL‐free CsPbI2Br C‐PSCs. This electron extraction optimization enables rapid photogenerated electron extraction and carrier separation, thereby suppressing recombination at the back contact. The resulting PSCs deliver a record VOC of 1.41 V, a high PCE of 17.42%
Zhiqi Li   +13 more
wiley   +1 more source

Ficha técnica

open access: yesConexões: Ciência e Tecnologia, 2016
Revista Conexões - Ciência e Tecnologia
doaj   +7 more sources

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