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Itens para a visualização no momento 11-20 of 91
Desenvolvimento e validação de método multirresíduo, empregando GC-ECD E GC-MS, para a investigação de pesticidas em morango, maçã e uva
(Universidade Federal de Santa Maria, 2005-03-03)
Pesticides use is still the main strategy used in the field for the combat and the prevention of agricultural plagues, guaranteeing enough food and of quality for the population. In the culture of fruits, especially in ...
Síntese, caracterização e cristaloquímica de complexos da cobre(I) e mercúrio(II) com ligantes triazenidos
(Universidade Federal de Santa Maria, 2005-07-20)
The reaction between mercury(II) acetate and 1-(3-nitrophenyl)-3-(2-fluorophenyl)triazene in a tetrahydrofuran/methanol mixture in the presence of
2,2′-bipiridylamine yields the complex [Hg(FC6H4NNNC6H4NO2)2] (1). (1) ...
Síntese, estruturas de triazeno 1-óxido e complexo de k+, e avaliação da atividade biológica de 1-metiltriazenos 1-óxido e 1,3-bis(aril)triazenos
(Universidade Federal de Santa Maria, 2005-12-19)
This work is associated with the crystal and molecular structure analysis of two free triazene 1-oxide molecules and a complex with K+ involving a p-carboxyfenil-substituted single protonated triazene 1-oxide ligand. ...
Reação de β-dimetilaminovinil cetonas com hidroxilamina: regioquímica de formação de 4,5-diidroisoxazóis e de isoxazóis
(Universidade Federal de Santa Maria, 2005-07-28)
The regiochemistry study of the formation of a series of aryl-, heteraryl- and haloalkyl-substituted isoxazoles from the reaction of β-dimethylaminovinyl ketones and
hydroxylamine is reported. The precursors β-imethylaminovinyl ...
Estudo da interação do alumínio com o ácido glucônico
(Universidade Federal de Santa Maria, 2005-08-19)
Parenteral solutions are used for patients with complexes diseases, for pre-term infants and surgical patients. The administration of solutions contaminated by aluminium for a long period of time can lead to severe ...
Uso de microondas na síntese de 3-alquil(aril)-5-hidróxi-5-triclorometil-4,5-diidro-1h-pirazol-1-carboxiamida
(Universidade Federal de Santa Maria, 2005-03-01)
A series of 3-alkyl and 3-aryl-5-hydroxy-5-trichloromethyl-4,5-dihydro-1Hpirazoles-1-carboxiamide that possess biological activity they were synthesized, in good yeld, through the cyclocondensation, in microwaves, of ...
Avaliação da atividade antimicrobiana de derivados isoxazóis
(Universidade Federal de Santa Maria, 2005-03-03)
Isoxazoles compounds have been showing a great variety of pharmacological activities. Such activities might be increased by the presence of halomethyl-substitute groups in isoxazoles. This work shows the synthesis of the ...
Síntese, reatividade e atividade antimicrobiana de β-enamino ésteres α-clorados utilizando K-10 e irradiação de microondas
(Universidade Federal de Santa Maria, 2005-12-15)
Enamino carbonylic compounds are important synthetic intermediates used in the synthesis of heterocycles and natural products. Our group of research has been dedicating much of our efforts to the development and implementation ...
Uso de modelos multivariados para a avaliação do valor de dienos em amostras de gasolina de pirólise
(Universidade Federal de Santa Maria, 2005-12-19)
The quality of gasoline may be affected by the presence of several compounds. Among them, the conjugated dienes play an important role due to the fact that their presence is strongly associated with gum formation, which ...
O ensino público tecnológico em Santa Maria – RS: clientes e expectativas
(Universidade Federal de Santa Maria, 2005-03-31)
The objective of this work is to know the reasons and expectations that took students on
seeking public technological schools, at secondary and post-secondary levels, in Santa Maria–
RS. The schools participated in this ...