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Itens para a visualização no momento 311-320 of 365
Migração de metais por interação das embalagens com soluções parenterais
(Universidade Federal de Santa Maria, 2008-06-19)
The administration of medication and nutrients via parenteral is very used
nowadays. One of the risks of this procedure is the presence of contaminants, which
depending on their nature may cause severe damage to the ...
Atividade catalítica promíscua de complexos imínicos derivados de hidrazidas e aldeídos aromáticos e suas respectivas atividades anti-biofilmes
(Universidade Federal de Santa Maria, 2022-11-03)
The work deals with the synthesis of new complexes of cations of first transition metal
series such as CoII, FeII, MnII and ZnII, from ligands derived from aromatic hydrazides
substituted with aromatic aldehydes ...
Síntese de BIS-1H-pirazóis trialometil substituídos
(Universidade Federal de Santa Maria, 2008-10-03)
The present research describes the use of b-alcoxyvinyl trihalomethyl ketones
(1,2) [CX3C(O)CHCRR1, where X: Cl, F; R: H, Me, Ph, 4-MePh, 4-MeOPh, 4-FPh, 4-
ClPh, 4-BrPh, 4-NO2Ph, 4,4 -Biphenyl, 1-Naphtyl, 2-Furyl, 2- ...
Emprego de ultrassom para a oxidação e separação de compostos orgânicos sulfurados em hidrocarbonetos e determinação de enxofre por técnicas espectrométricas e cromatográficas
(Universidade Federal de Santa Maria, 2009-04-13)
In this work, a process based on ultrasonic energy for sulfur removal from
petroleum fractions was proposed. The process combines ultrasonic energy and a
peroxyacid reagent in order to achieve the required sulfur content ...
Síntese, propriedades e avaliação da autoassociação molecular de 1,3-diariltriazenos e complexos triazenidos de Cu(I), Cu(II), Ni(II) e Pd(II)
(Universidade Federal de Santa Maria, 2009-09-02)
Triazenides ligands, strategically substituted by aril groups [ N=N N(H) ] chains and containing NO2, CF3 e F groups in different positions were evaluated in relation to the occurrence of intermolecular interactions ...
Síntese de 2-trialoacetil-1-metoxicicloalquenos e sua aplicação na obtenção de cicloalcapirazóis e isoxazóis derivados
(Universidade Federal de Santa Maria, 2008-08-06)
This work describes the synthesis and characterization of 2-trihaloacetylmetoxycycloalkenes series derived from cyclical ketones (cyclohexanone, cycloheptanone, cyclooctanone and cyclododecanone). The 2-trihaloacetyl-1-m ...
Biorrefinaria: investigação de processos físico-químico, fermentativo e térmico para o aproveitamento de serragem de eucalipto
(Universidade Federal de Santa Maria, 2009-09-14)
With the increasing worldwide concern on the environmental impacts of the intensive use of oil derivatives, renewed and continuous efforts have been made to develop alternative technologies for the use of renewable resources ...
Síntese de heterociclos via reações de ciclocondensação de a-etiloxalil e -pirazolil(alquil) b-dimetilaminoenonas com1,2- ou 1,3-Dinucleófilos
(Universidade Federal de Santa Maria, 2009-03-06)
Chemoselective synthesis of ethyl 4-pirimidinecarboxylates and/or ethyl 5-pirimidineoxalates via cyclocondensation reaction of b-dimethylaminoenones [R1C(=O)C(=CNMe2)C(=O)CO2Et, where R1 = Ph, 4-MeC6H4, 4-MeOC6H4, ...
Utilização de líquidos iônicos na síntese de enonas e de enaminonas
(Universidade Federal de Santa Maria, 2009-03-05)
The use of ionic liquids 1-butyl-3-methylimidazolium tetrafluorborate ([BMIM] [BF4]) and 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) as
catalytic solvent in the synthesis of 1,1,1-trichloro(fluoro)-3-a ...
Síntese de 2-fenil-3H-pirimidin-4-onas 6-metilsubstituídas e 4- trifluormetil-2-ureído pirimidinas
(Universidade Federal de Santa Maria, 2009-01-12)
This study was carried out in three parts: At first, three methods for the bromination of 6-alkylsubstituted 2-phenyl-3H-pyrimidin-4-ones was developed for the synthesis of: (i) a new series of 6-alkylsubstituted ...