Search
Now showing items 11-20 of 1042
Complexos de Cromo(III)-salen como catalisadores em reações de oxidação de sulfetos
(Universidade Federal de São Carlos, 2009-02-06)
Transition metal complexes participate in many chemical processes. The study of these complexes is very interesting because of the diversified chemistry and great utility. Transition metal complexes act as catalysts in ...
Nanocristais de TiO2 : relação entre parâmetros morfológicos, estruturais e fotocatálise
(Universidade Federal de São Carlos, 2010-02-26)
In this work, morphologically different TiO2 nanocrystals were synthesized through the OPM method with the objective of performing a comparative study related to photoactivity. Morphological characterization was performed ...
Influência de íons metálicos na estrutura de substâncias húmicas detectados por espectroscopia.
(Universidade Federal de São Carlos, 2005-03-23)
INFLUENCE OF METAL CATIONS IN THE STRUCTURE OF
HUMIC SUBSTANCES AS DETECTED BY SPECTROSCOPY, involves a
study by which starting from precursors of humic substances, some polymers
were obtained, characterized and comparable ...
Termodinâmica de líquidos iônicos via simulação computacional.
(Universidade Federal de São Carlos, 2006-10-04)
In this work classical molecular dynamics was used to study the
pure ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate,
[BMIM]+[BF4]-, and some solutions based in it. The OPLS-AA force field and
CHelpG derived ...
Metabólitos secundários de Streptomyces clavuligerus ATCC 27064 e fungos endofíticos filamentosos
(Universidade Federal de São Carlos, 2008-10-11)
This work describes the investigation of part of the secondary metabolism of actinomicete Streptomyces clavuligerus and endophytic filamentous fungus Penicillium sp isolated from Murraya paniculata; Penicillium brasilianum ...
Estudo do processo de eletrodeposição e caracterização de ligas de Sn-Zn
(Universidade Federal de São Carlos, 2009-05-27)
This study evaluated the electrodeposition processes of Sn, Zn and Sn-Zn alloy in the absence and presence of tartaric acid as complexing agent. Initially all the systems studied were evaluated by Cyclic Voltammetry to ...
Síntese assistida por microondas de LiMn2O4, caracterização e testes como catodo para dispositivos de armazenamento de energia
(Universidade Federal de São Carlos, 2011-03-02)
Lithium manganese oxide - LiMn2O4 - was produced by a microwaveassited solid state reaction. Solid mixtures containing LiOH.H2O and -MnO2 (synthesized electrolytically) underwent microwave irradiation for 3, 4 and ...
Estudo químico de plantas com atividades sobre insetos sociais
(Universidade Federal de São Carlos, 2007-12-05)
The chemical control of pest, which uses conventional insecticides, shows a number of advantages to agriculturists due to its efficiency, lower cost and facility of use in related to others. However, the utilization of the ...
Preparação e caracterização de blendas de PANI/ABS
(Universidade Federal de São Carlos, 2009-03-16)
Polyaniline (PANI) chemical synthesis was monitored in situ by means of electrochemical impedance, open circuit potential (Voc) and mass variation. We verify that the final properties of the polymer could be practically ...
Estudo mecânico-quântico ab initio da propriedade fotoluminescente em compostos PbWO4, BaWO4, SrWO4 e dos processos de intercalação e difusão de Li no composto Li1+xTi2O4
(Universidade Federal de São Carlos, 2008-04-18)
Computational simulation by means of quantum-mechanical calculations is becoming an increasingly important tool in scientific research of materiaIs due the great advances in the performance of computers and in the development ...