Nickel Acetate
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Electrochemical studies of cooper, nickel and a Cu55/Ni45 alloy in aqueous sodium acetate
This paper discusses the electrochemical behavior of copper, nickel and a copper/nickel alloy in aerated aqueous 0.10 and 1.0 mol L-1 sodium acetate. The data obtained from different electrochemical techniques were analyzed to determine the influence of Ni and Cu on the electrochemical processes of the alloy electrode. The shapes of the potentiodynamic I(E)
Publicado em: 2010
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2. Cultivo de bactérias redutoras de sulfato (BRS) e sua aplicação na biorremediação de efluentes ácidos contendo metais
Sulfate Reducing Bacteria (SRB) can be used as a promise and attractive biotechnology based alternative to promote passive treatment of industrial effluents. Sulfate is reduced to sulfide while organic matter is oxidized producing carbonate and bicarbonate ions. Treatment efficiency however depends on pH and metals content of the selected effluent and also o
Publicado em: 2009
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3. Estudos em materiais vitreos e/ou ceramicos de SiCxOy e/ou SiC enriquecidos com fase dispersa de carbono / Studies in vitreous and/or ceramic materials based on SiCxOy and/or SiC enriched with dispersed carbon
In this study, vitreous and/or ceramic materials based on SiCxOy and/or SiC enriched with carbon were obtained by pyrolysis of hybrid polymeric precursors, in the presence or not of nickel acetate (NiAc). The polymeric precursors with and without NiAc were prepared by hydrosilylation reaction between poly(methylsiloxane) (PMS) and divinylbenzene (DVB), in di
Publicado em: 2008
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4. SÍNTESE, ESTRUTURA E AVALIAÇÃO DA ATIVIDADE ANTIMICROBIANA DE COMPLEXOS METÁLICOS COM SULFAMETOXAZOL / SYNTHESIS, STRUCTURE AND ANTIMICROBIAL ACTIVITY EVALUATION OF METALLIC COMPLEXES WITH SULFAMETHOXAZOLE
This work presents the study of compounds obtained from interaction of sulfamethoxazole with copper, cadmium, mercury and nickel acetates, gold triphenilphosphine acetate / chloride and with silver chloride. The synthesis and the characterization of the new compounds were accomplished by the analyses of the reactivity, the coordinative behavior and to the co
Publicado em: 2007
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5. Estudos de Novas Metodologias Sintéticas para Heterocíclicos Quinolônicos, Triazólicos e Síntese de Catalisadores Quirais
In order to obtain quinolone nucleosides a new methodology based on construction of the heterocyclic ring at the carbohydrate moiety was devised. The carbohydrates: 1-methoxy-2,3-O-isopropylidene-α-D-ribofuranose (108), 1-methoxy-2,3-O-isopropylidene-5-O-methanesulfonyl-β-D-ribofuranose (109a) and 1-methoxy-2,3-O-isopropylidene-5-O-p-toluenesulfony
Publicado em: 2004
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6. Monitoramento automÃtico de pH, nÃquel e cloreto em banhos de nÃquel tipo watts utilizando um sistema SIA
The need to rapidly perform multiparametric analysis makes the development of automatic on-line monitoring systems highly desirable for many industrial processes. Electroplating is a process used to protect metallic pieces from corrosion. For this process to be successful, electrolytic baths must be constantly monitored. Consequently, the development of a se
Publicado em: 2002
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7. Electrochemical studies of copper, nickel and a Cu55/Ni45 alloy in aqueous sodium acetate
This paper discusses the electrochemical behavior of copper, nickel and a copper/nickel alloy in aerated aqueous 0.10 and 1.0 mol L-1 sodium acetate. The data obtained from different electrochemical techniques were analyzed to determine the influence of Ni and Cu on the electrochemical processes of the alloy electrode. The shapes of the potentiodynamic I(E)
Materials Research. Publicado em: 2001
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8. Pre-concentração de cobalto utlizando resina Amberlyst A-26 modificada com morfolinaditiocarbamato de amonio e determinação por espectrometria de absorção atomica
Foi desenvolvido um sistema para pré-concentração de traços de cobalto, utilizando uma coluna de vidro preenchida com resina Amberlyst A-26 modificada com morfolinaditiocarbamato de amônio. A determinação do elemento foi feita por espectrometria de absorção atômica, com chama. No processo de otimização das variáveis do sistema de pré-concentra�
Publicado em: 1998
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9. Nickel requirement of Acetobacterium woodii.
Growth of Acetobacterium woodii on H2 and CO2 rather than on fructose was dependent on nickel. Nickel-deprived cultures growing on fructose did not synthesize acetate from CO2; under these conditions hydrogen formation was used as the electron sink. The data indicate that nickel is involved in CO2 reduction to acetate in A. woodii.
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10. Nickel requirement and factor F430 content of methanogenic bacteria.
Methanobacterium thermoautotrophicum has been reported to require nickel for growth and to contain high concentrations of a nickel tetrapyrrole designated factor F430. In this communication it is shown that all methanogenic bacteria investigated incorporated nickel during growth and also synthesized factor F430. This was also true for Methanobrevibacter smit
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11. Isolation of an enzyme complex with carbon monoxide dehydrogenase activity containing corrinoid and nickel from acetate-grown Methanosarcina thermophila.
Fast protein liquid chromatography of cell extract from methanol- or acetate-grown Methanosarcina thermophila resolved two peaks of CO dehydrogenase activity. The activity of one of the CO dehydrogenases was sixfold greater in acetate-grown compared with methanol-grown cells. This CO dehydrogenase was purified to apparent homogeneity (70 mumol of methyl viol
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12. Nickel-Dependent Chemolithotrophic Growth of Two Hydrogenomonas Strains1
Bartha, R. (University of Washington, Seattle), and E. J. Ordal. Nickel-dependent chemolithotrophic growth of two Hydrogenomonas strains. J. Bacteriol. 89:1015–1019. 1965.—The trace element requirements for growth of facultative chemolithotrophic Hydrogenomonas strains H1 and H16 were investigated under both autotrophic and heterotrophic conditions. The