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Now showing items 31-40 of 387
Estudo da interação entre borrachas comerciais e misturas de biodiesel/diesel por espectroscopia de ressonância magnética nuclear
(Universidade Federal de São Carlos, 2014-10-09)
Nowadays biodiesel has taken steps toward the consolidation as energetic matrices of many countries. Elastomers are one of the most important groups of materials used in engines and the compatibility of these materials ...
Síntese e caracterização de espinélios de lítio e manganês obtidos via rota hidrotermal assistida por microondas
(Universidade Federal de São Carlos, 2014-11-28)
Lithium and manganese oxide in spinel phase (LiMn2O4) was obtained by microwave-assisted hydrothermal route starting from completely soluble reagents. For this, a mixture of potassium permanganate and lithium hydroxide ...
Desenvolvimento de processos químicos seguindo os princípios adotados pela química verde: redução e conversão de CO2 usando compostos de Mn(I)
(Universidade Federal de São Carlos, 2014-10-09)
Due to its versatile chemistry and ability to stabilize metals with low oxidation states, carbonyl compounds of transition metals play an important role in various fields of organometallic chemistry. In our research group, ...
Síntese e propriedades fotocatalíticas do titanato de bismuto obtido pela rota dos complexos oxidantes de peróxido
(Universidade Federal de São Carlos, 2014-08-14)
The welfare of the population and technological progress of our society largely depend on the development and the intensive use of synthetic materials, generating a large amount of residual chemicals and high energy ...
Obtenção do sistema TiO2:Ag na forma de filmes nanoestruturados em filtros cerâmicos para aplicação em fotocatálise
(Universidade Federal de São Carlos, 2014-02-19)
In this study, it was aimed to obtain powders and thin films of titanium dioxide (TiO2) with silver (Ag) deposited on ceramic filters, synthesized by the polymeric precursor method for degradation of rhodamine B dye under ...
Estudo fitoquímico de Eugenia myrcianthes: busca de substâncias bioativas
(Universidade Federal de São Carlos, 2014-04-04)
The search for new substances with bioactive potential is the target of numerous studies inserted in the chemistry of natural products, since it involves the isolation, the structural elucidation, as well as the action ...
Estudo de incorporação de whiskers de celulose em polietileno de baixa densidade (PEBD)
(Universidade Federal de São Carlos, 2014-04-29)
This research proposed the obtainment of cellulose whiskers from cotton fibers and their application in low density polyethylene matrix (LDPE). Cellulose whiskers was obtained from acid hydrolysis of cotton fibers and the ...
Desenvolvimento de métodos eletroanalíticos empregando o eletrodo de diamante dopado com boro para a determinação simultânea de edulcorantes e corantes em produtos alimentícios
(Universidade Federal de São Carlos, 2014-06-18)
In this work, three electroanalytical proceduces were developed for simultaneous determination of sweeteners (aspartame (AS) and acesulfame-K (AK)) and colorants (sunset yellow (SY), indigo carmine (IC) and allura red (AR)) ...
Químio-, régio- e estereosseletividades das reações de Diels-Alder de para-benzoquinonas: um estudo teórico
(Universidade Federal de São Carlos, 2014-07-23)
In this work, some computational theoretical studies on the reactivity of para-benzoquinones and their derivatives in Diels-Alder reactions were proposed These studies were done in order to compliment the corresponding ...
Recuperação de fosfolipídios residuais do farelo desengordurado de soja
(Universidade Federal de São Carlos, 2014-08-07)
In soybean processing industry, oil extraction with hexane generates defatted meal. Next, soybean protein concentrate (SPC) production from the defatted meal by using ethanol solution generates alcoholic micelle as a ...