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Mostrando ítems 3461-3470 de 3486
“Catalisadores Au/m-ZrO2 aplicados na conversão direta do etanol em acetato de etila: efeito do grau de recobrimento do suporte nas propriedades catalíticas”
(Universidade Federal de São Carlos, 2018-04-26)
In this present work, the direct formation of ethyl acetate from ethanol was studied using monometallic catalysts of Au supported on m-ZrO2. Other supports, such as MgO and SiO2, as well as Cu-based catalysts were prepared ...
Estudo das propriedades fotoluminescentes do ZnS e ZnS: Eu obtidos pelo método solvotérmico assistido por microondas
(Universidade Federal de São Carlos, 2012-07-20)
This paper is about the synthesis, characterization and studies of nanostructures of ZnS and ZnS:Eu3+ prepared by microwave-assisted solvothermal method. The influence of the synthesis time in the microwave on the samples ...
Comportamento mecânico sob fadiga de compósitos de polipropileno com reforço híbrido de fibras e microesferas ocas de vidro
(Universidade Federal de São Carlos, 2018-02-05)
Short glass fiber (GF) reinforced polypropylene (PP) composites can be hybridized with hollow glass beads (HGB) in order to minimize the adverse effects arising from the preferential fiber orientation in injection molded ...
Estudo das propriedades mecânicas, térmicas e de transporte do compósito com carbonato de cálcio nano e microparticulado em polipropileno
(Universidade Federal de São Carlos, 2011-03-04)
In this work were determined and compared to mechanical, thermal and barrier of the polypropylene composites containing micropartilate and microparticulate calcium carbonate. To prepare the composites, the filler was ...
Desenvolvimento de um novo protocolo sequencial três etapas para a síntese de 1,2,3-triazóis 1,4-dissubstituídos assistida por irradiação de micro-ondas
(Universidade Federal de São Carlos, 2019-12-11)
Heterocyclic compounds has received a great attention in the branch of synthetic chemistry due to their wide field of applications, and among these, 1,2,3-triazoles are highlighted. In this work, a new three-step sequential ...
Preparação de um novo catalisador de cobre trocado em zeólita magneticamente recuperável para síntese de 1,2,3-triazóis 1,4-dissubstituídos
(Universidade Federal de São Carlos, 2018-07-06)
The search for more sustainable methodologies has led in recent years to a significant increase in the development of more efficient heterogeneous catalysts, easily recoverable and with high stability over several reaction ...
Cinética de liberação de clorexidina em nanocompósito de magnetita e quitosana
(Universidade Federal de São Carlos, 2019-04-03)
Nanocomposites are used in several fields of knowledge, including nanomedicine. They are used as drug carriers because of their biocompatibility and biological activity, with possible antimicrobial activity. This study ...
Uma proposta contextualizada para o ensino médio: regressão linear
(Universidade Federal de São Carlos, 2019-01-25)
This work has as the main objective the teaching of Linear Regression contextualized to High School students. For this, it was elaborated a plan of teaching unity which has four class plans. The class plans are structured ...
Estudo da produção de nanofibras de carbono por fiação por sopro em solução a partir de poliacrilonitrila e lignina
(Universidade Federal de São Carlos, 2019-10-24)
Carbon nanofibers (NFC) are highly resistant materials and are widely used in the aerospace and battery industry. Methods such as eletrospinning and solution blow spinning (SBS) are used for the production of carbon ...
Organocatálise assimétrica e sistemas vinílogos: adição de 1,3-oxazolina-2-tionas a aldeídos a,b-insaturados
(Universidade Federal de São Carlos, 2017-03-16)
The use of organic molecules in stereoselective transformations has emerged as a powerful tool for the efficient construction of chiral skeletons and complementing existing methods. Currently, a great variety of reactions ...