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Ti-MCM-41 catalysts prepared by post-synthesis methods. Limonene epoxidation with H2O2
(Elsevier Science, 2008-04)
Ti-MCM-41 catalysts were prepared incorporating Ti by post-synthesis methods: wetness and wet impregnation of MCM-41 mesoporous solid. The samples were characterized by XRD at low angle, UV-vis DRS, Raman spectroscopy, ...
The effect of the degree of hydrolysis of the PVA and the plasticizer concentration on the color, opacity, and thermal and mechanical properties of films based on PVA and gelatin blends
(ELSEVIER SCI LTD, 2008)
The objective of this work was to study the color, opacity, crystallinity, and the thermal and mechanical properties of films based on blends of gelatin and five different types of PVA [poly(vinyl alcohol)], with and without ...
The influence of maternal factors on the concentration of vitamin A in mature breast milk
(CHURCHILL LIVINGSTONE, 2009)
Background & aims: This study evaluated the relationship between vitamin A concentration in maternal milk and the characteristics of the donors of a Brazilian human milk bank. Material and methods: A total of 136 donors ...
Fluoride modulates preosteoblasts viability and matrix metalloproteinases-2 and -9 activities
(Fundação Odontológica de Ribeirão Preto, 2012)
This study evaluated the influence of fluoride on cell viability and activity of matrix metalloproteinases (MMP) -2 and -9 secreted by preosteoblasts. Preosteoblasts (MC3T3-E1 murine cell line) were cultured in MEM medium ...
Microencapsulation of betalains obtained from cactus fruit (Opuntia ficus-indica) by spray drying using cactus cladode mucilage and maltodextrin as encapsulating agents
(Elsevier, 2015-11)
The microencapsulation of betalains from cactus fruit by spray drying was evaluated as a stabilization strategy for these pigments. The betalains used as active agent were extracted from purple fruits of Opuntia ficus-indica ...
Avaliação da cor e comportamento espectral de algumas classes de solos do Rio Grande do Sul
(Universidade Federal de Santa MariaBRAgronomiaUFSMPrograma de Pós-Graduação em Ciência do Solo, 2005-02-23)
The soil color is a characteristic easily determined, through the visual comparison with the Munsell Charts and is related to the presence of iron oxide and organic matter in the soil. The obtention of the color trough ...
Atividade antioxidante de extratos de própolis comercializados em Santa Maria - RS e aplicação em lingüiça toscana refrigerada
(Universidade Federal de Santa MariaBRCiência e Tecnologia dos AlimentosUFSMPrograma de Pós-Graduação em Ciência e Tecnologia dos Alimentos, 2009-11-13)
This study aimed to characterize commercial extracts of propolis and apply it in different concentrations in Tuscany sausage. The characterization of propolis in
the first experiment was carried out by their compositions ...
Influência dos tratamentos termomecânicos na madeira
(Universidade Federal de Santa MariaBRRecursos Florestais e Engenharia FlorestalUFSMPrograma de Pós-Graduação em Engenharia Florestal, 2015-02-25)
Thermomechanical treatments seek to increase the wood density, throught of the temperature
and pressure combination, which results in a material with improved physical and mechanical
properties. Thus, the study aimed to ...