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Itens para a visualização no momento 101-110 of 290
Estudos biossintéticos de amidas bis-fenilpropanoídicas produzidas pelo fungo Penicillium brasilianum, um endofítico de Melia azedarach (Meliaceae)
(Universidade Federal de São Carlos, 2009-02-12)
In the present work it was developed analytical methodologies for investigation of biosynthesis of bis-phenylpropanoyl amides, using labeled precursors in the culture medium. The effect of different nitrogen sources on the ...
Construção e aplicação de um Turbidímetro / Nefelômetro Microcontrolado Portátil
(Universidade Federal de São Carlos, 2009-07-30)
Development of a portable, simple and inexpensive equipment with adequate sensitivity for turbidimetric and/or nephelometric sequential analyses practically simultaneous is the aim of this study. In fact, in-situ and on-line ...
Desenvolvimento de métodos eletroanalíticos para a determinação do diuron e ametrina e estudos de sorção em solos sob mata e cana-de-açúcar
(Universidade Federal de São Carlos, 2009-07-29)
It is vital to know the mechanisms and processes of interaction between pesticides and the environment and monitor the groundwater, surface water and soil in intensively used areas which such products for the evaluation ...
Estudo fitoquímico de Rauia sp e atividades sobre formigas cortadeiras e sobre a lagarta-do-cartucho do milho
(Universidade Federal de São Carlos, 2009-09-11)
The control of agriculture plague is relevant to Brazil that has large crop area. The control, by natural product, generally low toxic to humans and to animals and specific to target plague, is recommended. This work ...
A Reação de Diels - Alder de p-benzoquinonas sob efeito de microondas
(Universidade Federal de São Carlos, 2008-08-08)
In this work it was done a study of the microwave effect on Diels - Alder reaction of the p-benzoquinones thymoquinone (A1), 2,5-dimethyl-p-benzoquinone (A2) and 2,6-dimethyl-pbenzoquinone (A3) with the dienes cyclopentadiene ...
Estudo metodológico da reação de Prins em ausência de solventes orgânicos e sua aplicação na síntese de substâncias bioativas
(Universidade Federal de São Carlos, 2009-07-31)
In this work it was done a methodological study on Prins cyclization reaction in the absence of organic solvents. The synthesis of target compounds was possible by using or the catalytic system pTSA.SiO2(gel) initially ...
Estudos físico-químicos do efluente produzido por fossa séptica biodigestora e o impacto do seu uso no solo
(Universidade Federal de São Carlos, 2007-08-01)
The generation of effluent from the sewage treatment is daily increasing then its final disposition represents a mandatory question to be answered. An alternative is its agricultural utilization such as organic fertilizer ...
Avaliação do emprego de técnicas de RMN e IV aliadas a métodos quimiométricos na investigação de autenticidade da droga vegetal comercial quebra-pedra
(Universidade Federal de São Carlos, 2009-02-06)
The importance of medicinal plants and their use in industrial purposes is increasing. Among the herbal drugs being commercialized there are "quebra-pedras". According to the the Brazilian Pharmacopoeia, the recognized ...
Utilização de planejamento fatorial no estudo da remoção eletroquímica de íons Pb(II) de fluentes simulados
(Universidade Federal de São Carlos, 2007-07-27)
In this work, the removal of Pb(II) ions from simulated wastewaters, using a flow-through cell under galvanostatic condition was studied. With help of factorial design and response surface methodology, the variables current, ...
Nanocompósito de PP/PP-g-AM/argila organofílica: processamento, propriedades mecânicas, termo-mecânicas e de permeação de gás
(Universidade Federal de São Carlos, 2009-08-28)
The aim of present work was developing nanocomposites of polypropylene (PP) with organoclay (MMT) in the presence of a compatibilization agent (PP-g-MA) in the melt state. The masterbatch of PP-g-MA and organoclay was ...