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Estudo da origem biossintética do ácido acético e determinação da acidez em amostras de vinagres comerciais via RMN de 2H e 1H.
(Universidade Federal de São Carlos, 2004-02-27)
In this work we describe the use of NMR in the biosynthetic origin study
of acetic acid and acidity determination in commercial vinegar samples. The sitespecific
natural isotope fractionation of hydrogen and deuterium was ...
Estudo das etapas sintéticas de complexos mistos de ftalocianinas de zinco e cobalto com tetrafenilporfirina de zinco
(Universidade Federal de São Carlos, 2004-09-13)
A systematic study of synthetic steps in the
formation of phthalocyanine and porphyrin mixed complexes, having pyrazine as
bridged ligand is described in this work. Two mixed complexes series were
obtained, keeping ...
Desenvolvimento de pigmentos nanométricos encapsulados.
(Universidade Federal de São Carlos, 2004-04-08)
In the present study, perovskite-type NiTiO3 ceramic pigments were
prepared by the polymeric precursor method, originally proposed by Pechini.
The transluscent and viscous polymeric resin was characterized by
thermogravimetric ...
A reação de Diels-Alder entre p-Benzoquinonas 1,3-Pentadienos-1-Substituídos.
(Universidade Federal de São Carlos, 2004-07-23)
In this dissertation, studies are described on the cycloaddition of 1-silyloxypentadiene-
1,3 and 1-acylamino-pentadiene-1,3 with alkylated para-benzoquinones.
The first methodology involves cycloaddition reactions of ...