Results 11 to 20 of about 560,849 (261)

Preparation of sub-micron PZT particles with the sol-gel technique [PDF]

, 2006
This paper describes the production of Pb1.0Zr0.9Ti0.1 ceramic powder, by using metal organic precursors as starting materials. In this study polyvinylpyrrolidone, PVP, was used to create a PZT–PVP sol and then also added as a secondary stage to control ...
Alcock, Jeffrey R., Zhang, Qi, Linardos, S.   +2 more
core   +1 more source

Sols, sciences et recherches participatives : comment consolider et fédérer le foisonnement d’initiatives en France ?

Natures Sciences Sociétés, 2023
Dans le contexte du développement des sciences et recherches participatives (SRP), de plus en plus d’initiatives sur les sols ont été engagées ces dernières années.
Gascuel Chantal, Loiseau-Dubosc Philippe, Auclerc Apolline, Bougon Nolwenn, Caquet Thierry, Lerouyer Valérie, Pierart Antoine, Ranjard Lionel, Resche-Rigon Frédérique, Roturier Christophe, Sauter Joëlle, Serin Ludovic   +11 more
doaj   +1 more source

Solar imaging capabilities of the Brazilian decimetric array

Geofísica Internacional, 2000
En colaboración con la Universidad Federal de São Carlos, el Instituto Nacional de Pesquisas y la Universidad Federal de Santa María se hacen esfuerzos para desarrollar una tomograrfía solar utilizando imágenes solares obtenidas en varias longitudes de ...
E. Lüdke, H. S. Sawant, K. R. Subramanian, F. C. R. Fernandes, J. R. Cecatto, R. R. Rosa, J. H. A. Sobral, G. Swarup, W. D. Gonzalez, C. E. Moron, M. L. Mucheroni   +10 more
doaj   +1 more source

Reinforced sol–gel thermal barrier coatings and their cyclic oxidation life [PDF]

, 2013
Cyclic oxidation life enhancement of sol–gel thermal barrier coatings is obtained via the reinforcement of the controlled micro-crack network that forms during the initial sintering of the deposit.
Ansart, Florence, Bonino, Jean-Pierre, Pin, Lisa, Vidal, Vanessa, Lours, Philippe, Le Maoult, Yannick   +5 more
core   +1 more source

Gestão escolar e formação docente para a inclusão

Cadernos Cajuína
Este artigo discute a importância da relação entre gestão escolar e formação docente no contexto da educação inclusiva, apontando desafios e lacunas ainda presentes no cotidiano das escolas.
Adeneide Monteiro Guimarães, Alline Paula Santos de Oliveira, Graziely Gomes Vieira Vianna, Ivanete Barbosa Silva, Janaine Mendes Pereira, Marly da Cunha Monteiro, Paula Cristina de Oliveira Ferreira Correa, Luciéte Carmen Gomes de Oliveira   +7 more
doaj   +1 more source

Un nouveau test d’évaluation de la biodégradabilité dans le sol -- Travaux de normalisation en cours

Oléagineux, Corps gras, Lipides, 2003
Biodégradabilité primaire (disparition d’un composé parent), biodégradabilité ultime (stade terminal de la transformation du composé), écotoxicité, bio-accumulation autant d’outils à notre disposition pour évaluer l’impact environnemental des composés ...
Cecutti Christine
doaj   +1 more source

Coating of Carbon Fibers With Calcium Phosphate by Sol- Gel Method [PDF]

Engineering and Technology Journal, 2014
Sol-gel technique has been used to coat carbon fibers with calcium phosphate to improve the esthetic of black carbon fibers as it's biocompatible. To improve bonding between carbon fibers and prepared calcium phosphate powders, the surface of carbon ...
Sewench N. Rafeeq, Wafaa A. Husaien, Russel Rushdi Ghanim   +2 more
doaj   +1 more source

Effect of calcium source on structure and properties of sol–gel derived bioactive glasses [PDF]

, 2012
The aim was to determine the most effective calcium precursor for synthesis of sol–gel hybrids and for improving homogeneity of sol–gel bioactive glasses. Sol–gel derived bioactive calcium silicate glasses are one of the most promising materials for bone
Jones, Julian R., Newport, Robert J., Turdean-Ionescu, Claudia Adriana, Smith, Mark E., Smith, M.E., Martin, R.A., Hanna, John V., Turdean-ionescu, Claudia A., Jones, J.R., Yu, Bobo, Turdean-Ionescu, C.A., Martin, Richard A., Yu, B., Hanna, J.V.   +13 more
core   +1 more source

Epistemologias do Sul e justiça epistêmica: desafios para a pesquisa e a formação de professores na América Latina

Educação em Análise
Este artigo analisa as Epistemologias do Sul e a justiça epistêmica como referenciais para compreender a produção, a validação e a circulação do conhecimento na educação latinoamericana.
Eva Diana Chaparro Sanabria, Matheus Nunes dos Santos, Lucilene Batista Ribeiro, Andrezza Karla Neves de Moura , Eliana Aparecida da Silva   +4 more
doaj   +1 more source

Synthesis of B4C/YTZP Composite Powder and Studying Effect of its Addition on Mechanical Properties of B4C [PDF]

Engineering and Technology Journal, 2014
In this research B4C powder have been coated with yttria stabilized tetragonal zirconia polycrystalline (YTZP) (ZrO2 – 6wt% Y2O3) by using sol-gel method in order to obtain on composite powder (B4C core/ YTZP shell, 1/1 wt%).
Fadhil A. Chyad, Mohammed H. AL-Taie, Hussein AlaaJaber   +2 more
doaj   +1 more source