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Síntese de 1,7-fenantrolinas e 7-aminoquinolinas trifluormetil substituídas
(Universidade Federal de Santa Maria, 2010-02-26)
This work, at first, describes the synthesis and characterization of new series of (Z,Z)-N,N -bis(oxotrifluoroalkenyl)-1,3-phenylenediamines by the addition/elimination reaction of β-alkoxyvinyl trifluoromethyl ketones ...
Determinação de resíduos de pesticidas em solo de lavoura de arroz irrigado empregando QuEChERS modificado e LC-MS/MS
(Universidade Federal de Santa Maria, 2010-12-15)
The use of pesticides and their residues have become a problem due to possible contamination of soil, impacting on the environment and causing trouble to public health. In this research, an analytical method was optimized ...
Metodologia para a determinação de cátions inorgânicos em formulações minerais e fitoquímicas por eletroforese capilar com detecção condutométrica
(Universidade Federal de Santa Maria, 2010-11-18)
The selective determination of inorganic cations, like alkaline, earth-alkaline, of
transition and the ammonium ion (NH4
+) is considered as a difficult practice, because
generally, these ions show very close apparent ...
Reações de enonas trialometilsubstituídas com aminas e diaminas: Síntese de análogos do etambutol
(Universidade Federal de Santa Maria, 2010-02-24)
A series of 5,5,5-trifluoro-3-methyl-(alkylmethylamino)-pentane-1,4-diols, 5,5,5-trifluoro-3-methyl-(arylmethylamino)-pentane-1,4-diols and N,N-bis[5,5,5-
trifluoro-3-methyl-(alkylmethylamino)]-pentane-1,4-diols were ...
Determinação de As, Bi, Sb, Se, Sn e Te por injeção em fluxo com geração de hidretos acoplada a espectrometria de massa com plasma indutivamente acoplado
(Universidade Federal de Santa Maria, 2010-07-23)
In this work it is proposed the development of flow injection systems for hydride generation coupled to inductively coupled plasma mass spectrometry (FI-HG-ICPMS)
for determination of trace elements (As, Bi, Sb, Se, Sn and ...
Nh-pirazóis e isoxazóis: síntese mecanicamente ativada por grinding
(Universidade Federal de Santa Maria, 2010-07-30)
The synthesis of twelve NH-pyrazoles from the cyclocondensation reaction of β-dimethylaminovinylketones ([R1C(O)C(R2)=CHN(Me)2], where R1 = Me, C6H5, 3-
MeO-C6H4, 4-Me-C6H4, 4-MeO-C6H4, 4-F-C6H4, 4-Cl-C6H4, 4-Br-C6H4, ...
Síntese de 1,1-dimetiletil-1h-pirazóis em líquidos iônicos
(Universidade Federal de Santa Maria, 2010-07-08)
This work describes the synthesis of a series of pyrazoles from enaminoketones (RC(O)CH=CHNMe2 where R = hexyl, dimethoxymethyl, Ph, 4-Me-C6H4 4-F-C6H4, 4-Cl-C6H4, 4-Br-C6H4, 4-O2N-C6H4, thien-2-yl, fur-2-yl, pyrrol-2-yl ...
Produção de ácido levulínico por meio de hidrólise ácida da casca de arroz
(Universidade Federal de Santa Maria, 2010-02-08)
The beginning of the 21st century has been characterized by a great interest about the use of renewable raw materials for the production of industrial feedstocks and technological products. This trend is followed by the ...
Influência da formação de hidroxialuminosilicatos na biodisponibilidade do alumínio
(Universidade Federal de Santa Maria, 2010-02-04)
Solutions for parenteral nutrition may be contaminated by aluminum and silicate due to their storage in containers made of glass and due to the sterilization process (autoclave), which promotes the lixiviation of these ...
Síntese e Análise Estrutural de Complexos de Urânio (VI) e Tório (IV) com Ligantes Relacionados a N,N -bis-piridoxilidenoimina
(Universidade Federal de Santa Maria, 2010-07-16)
This work presents a study related to the synthesis and structural analysis of complexes of uranium (IV) and thorium (IV) with ligands related to N,N -bispiridoxilideneimine. Pyridoxine chlorhydrate and aliphatic and ...