Results 31 to 40 of about 18,317 (195)

O novo ecossistema comunicacional e a socialização de crianças e jovens no espaço cultural da lusofonia: contributos da literatura infantojuvenil [PDF]

open access: yes, 2012
Partindo da configuração de um novo ecossistema comunicacional, que tem na internet o seu epicentro, procura-se refletir sobre a influência do mesmo na socialização de crianças e jovens, através da análise da presença de literatura infantojuvenil neste ...
Macedo, Lurdes
core   +2 more sources

Photons as Working Body for Photovoltaic Devices: Conversion of Photon to Electron from a Simplified Perspective

open access: yesAdvanced Theory and Simulations, Volume 9, Issue 1, January 2026.
In this work two models to study the photovoltaic response of solar cells are reported. The first model considers the bandgap effect to quantify the conversion of photons into electrons that makes up the photocurrent in the maximum electrical output power condition. The second model quantifies photocurrent in the short circuit condition from the energy
Francisco Marcone Lima   +9 more
wiley   +1 more source

Lusophony as an aesthetic experience: considerations on the existence of a Lusophone canon [PDF]

open access: yes, 2015
A partir de um conceito alargado de estética, coincidindo com o sentido panteísta que Georg Simmel lhe atribui, discorre-se sobre a presença portuguesa nos trópicos e sobre a constituição, no decorrer do período mercantilista, do que poderá ser ...
Venâncio, José Carlos
core  

Neem oil (Azadirachta indica) as a promising feedstock for biolubricant production: enzymatic synthesis, process optimization, and molecular studies

open access: yesBiofuels, Bioproducts and Biorefining, Volume 20, Issue 1, Page 237-252, January/February 2026.
Abstract The fuel industry remains closely tied to oil‐based fuels. This relationship is responsible for increasing greenhouse gas emissions. Biofuels are an alternative to petroleum‐based fuels that could make industrial production lines more sustainable.
Francisco Simão Neto   +14 more
wiley   +1 more source

A mobilização do conceito de Lusofonia : o caso dos canais internacionais da RTP [PDF]

open access: yes, 2006
Este artigo analisa o papel que é atribuído aos canais internacionais da televisão portuguesa (RTP Internacional e RTP África) na reconfiguração da área cultural multicontinental altamente dispersa que é o Espaço Lusófono.
Sousa, Helena
core  

CORDEL PARA APOIAR MÃES COM FILHOS INTERNADOS EM UNIDADE NEONATAL DURANTE A PANDEMIA DE COVID-19

open access: yesCogitare Enfermagem, 2021
Objetivo: construir uma literatura de cordel para apoiar mães com filhos internados em unidade neonatal durante a pandemia de covid-19. Método: pesquisa metodológica realizada em junho de 2020 em duas etapas: 1.
Anne Fayma Lopes Chaves   +6 more
doaj   +1 more source

Dual Lipase Immobilization on Kaolin‐Based Support for High Catalytic Efficiency and Long‐Term Stability

open access: yesChemCatChem, Volume 18, Issue 2, 28 January 2026.
This study presents the co‐immobilization of CALB and Eversa lipases on functionalized kaolin, followed by process optimization using the Taguchi method. The graphical abstract illustrates the immobilization strategy, optimization workflow, and computational analysis describing enzyme–support interactions, highlighting how structural and energetic ...
Antônio Luthierre Gama Cavalcante   +9 more
wiley   +1 more source

Sustainable biofuel production from fish processing waste: lipase‐catalyzed hydroesterification of tilapia residual oil

open access: yesBiofuels, Bioproducts and Biorefining, Volume 19, Issue 6, Page 1948-1969, November/December 2025.
Abstract Fishing waste and byproducts, whether naturally occurring or from industrial processing, are important sources of high‐value compounds. Fertilizers, biomaterials, cosmetics, biolubricants, and biodiesel are some of the substances that can be obtained from these residues. The objective of this study was to conduct a theoretical and experimental
Patrick da Silva Sousa   +7 more
wiley   +1 more source

Hydrogen production by Enterobacter cloacae via dark fermentation using an agroindustrial residue, cashew apple bagasse

open access: yesBiofuels, Bioproducts and Biorefining, Volume 19, Issue 4, Page 1207-1218, July/August 2025.
Abstract The use of biomass for the production of hydrogen gas (H2) offers a promising pathway toward sustainable energy systems. However, effective H2 production is still hindered by technological challenges, particularly in selecting appropriate feedstocks and optimizing production processes.
Gabriel Facundo Simão   +5 more
wiley   +1 more source

RISCO DE SUICÍDIO ENTRE ACADÊMICOS DE ENFERMAGEM DE UMA UNIVERSIDADE PÚBLICA

open access: yesCogitare Enfermagem, 2023
Objetivo: descrever os índices de risco de suicídio em estudantes de enfermagem de diferentes nacionalidades em uma universidade pública. Método: estudo transversal que ocorreu de agosto a novembro de 2019, Ceará - Brasil.
Diego da Silva Ferreira   +5 more
doaj   +1 more source

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