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Mostrando ítems 91-100 de 290
Complexos carbonílicos de rutênio. De um gás tóxico a uma droga com potencial agente citotóxico
(Universidade Federal de São Carlos, 2007-11-27)
In this work ruthenium carbonyl complexes were synthesized and characterized which allowed an interesting spectroscopic and structural study as well as preliminary in vitro antitumor activity assays. Thus, the interests ...
Síntese, caracterização e estudo das propriedades fotofísicas de SiO2-GeO2 VAD encapsulada com Eu2O3
(Universidade Federal de São Carlos, 2008-08-22)
Some materials can be encapsulated with metals, inorganic solids and biomolecules, in a nanometric scale, to form a nanocomposite which has specific properties that can be open to research and technology works. In the ...
Atividade inseticida de espécies de trichilia frente à lagarta-do-cartucho do milho spodoptera frugiperda
(Universidade Federal de São Carlos, 2008-07-18)
This work presents the phytochemical study and biological assays carried out with organic extracts of fruits and seeds
from Trichilia claussenii, T. elegans and inflorescence from T. catigua against S. frugiperda. Among ...
Titulações potenciométricas de cátions metálicos tendo como eletrodo indicador o sistema Cu/CuY2-
(Universidade Federal de São Carlos, 2007-07-27)
In this work a Cu/CuY2- indicator system was used to carry out potentiometric titrations of Cu2+, Co2+, Cd2+, Zn2+ and Mn2+ ions with EDTA solution. A copper wire with 8.32 cm2 of superficial area was used as an indicator ...
Fracionamento de zinco em amostras de leite
(Universidade Federal de São Carlos, 2009-02-26)
This work studies were aimed at samples preparation and chemical speciation levels zinc in samples of different kind
of milk (milk cattle, sheep, goat, and soybean milk base). The proposal aimed to establish the differences ...
Análises de meroterpenos produzidos por Penicillium brasilianum
(Universidade Federal de São Carlos, 2008-02-14)
This work describes the use of the high performance liquid cromatography (HPLC) technic coupled to the mass spectrometry technique for the analysis of fungal extracts, and the main purpose was the detection of meroterpens ...
Estudo teórico do espalhamento de elétrons por radicais livres
(Universidade Federal de São Carlos, 2007-07-13)
In this present work, we have carried out some calculations of electron-radicals scattering cross sections in the lowjintermediate energy range. Differential, integral, momentum transfer, total and total of absorption cross ...
Estudo químico e biológico de micro-organismos endofíticos associados às frutas banana, pêra e goiaba
(Universidade Federal de São Carlos, 2010-03-05)
Studies about interaction between microorganisms and plants are focused mainly in the vegetal tissues like roots, steam and leaves. Fruits are a right target for microorganism attacks. Nevertheless, endophytic microorganisms ...
Estudo da influência dos aditivos manitol, EDTA e NTA no processo de eletrodeposição de zinco sobre aço 1010 e na morfologia dos eletrodepósitos
(Universidade Federal de São Carlos, 2009-08-21)
In this paper the effects of adding mannitol, EDTA or NTA to an alkaline deposition bath on the electrodeposition of zinc on to AISI 1010 steel substrate were evaluated. Voltammetric curves of 1010 steel in deposition bath ...
Compósitos de Polipirrol e Li1,05Mn2O4 : preparação por dip coating ou casting e caracterização eletroquímica
(Universidade Federal de São Carlos, 2009-08-21)
Films of polypyrrole/Li1.05Mn2O4 composites were prepared by chemical synthesis over a carbon-fiber substrate, using the dipcoating and casting techniques, aiming at improving the performance of these materials as cathodes ...