The Board of Directors of the Sociedade Brasileira de Química-SBQ (publisher of the Química Nova-QN) decided that from March 2016 the JBCS will adopt the full open access format in which authors are required to cover part of the publication costs for their articles. See more...
Dalva L. A. de Faria*; Thiago S. Puglieri
A painting signed "Maurice, Utrillo, V" and dated 1923 was thrown away because it was assumed to be a worthless reproduction. Careful analysis however, which included spectroscopic techniques, showed that it was a painting reproduction made using the Jacomet procedure.
Ana Luiza de T. FornazariI; Sidney Aquino NetoII; Adalgisa R. de AndradeII; Douglas W. MiwaIII; Artur de J. MotheoIII; Geoffroy R. P. MalpassI,*
Effect of UV irradiation on the cyclic voltamogram of a Ti/TiO2 electrode produced by the thermal decomposition method.
Verónica R. Elías; Ema V. Sabre; Sandra G. Casuscelli; Griselda A. Eimer*
The next transition: Cr6+-O2−↔ Cr5+-O1− took place on the catalyst surface under visible light (λ > 380 nm) resulting in the formation of hole/electron pairs in the titania. These pairs produce highly reactive radical species that initiate dye degradation.
Fernanda C. BottegaI; Marcelo R. L. OliveiraI,*; Mayura M. M. RubingerI; Carlos R. BellatoI; José D. ArdissonII; Laercio ZambolimIII
Salts of anionic dithiocarbimatedibutyltin(IV) complexes with tris(1,10-phenanthroline)iron or tetraphenylphosphonium cations active against phytopathogenic fungi.
João Paulo Reis da Silva; Graziela Fregonez Baptista Cruz; Ricardo J. Cassella; Wagner F. Pacheco*
A colunm was made by XAD-4 modfyed with phenylfluorone and used to pre concetrate Cd.
Marina Gabriela Birck; Luana Janaína Campos; Eduardo Borges de Melo*
Using a data set with antimalarial compounds, it was developed QSAR, pharmacophoric modeling, and virtual screening (VS) studies. The obtained QSAR model equation was used for predict the potential antimalarial activty of four selected hits.
Edgardo CagnolaI,*; Domingo LiprandiI; José ParedesI; Nicolás CarraraI,II; Mónica QuirogaI,II
Hydrogenation of 1-heptyne, Wilkinson complex as catalyst in homogeneous system and in heterogeneous systems, supported on γ-Al2O3 and a commercial carbonaceous material, RX3.
Andréia Gomes BezerraI,*; Giuseppina NegriI,IV; Joaquim Maurício Duarte-AlmeidaII,IV; Soraya Soubhi SmailiIII; Elisaldo Araújo CarliniIV
This study describes a chemical analysis of hydroethanolic extracts of powdered roots from P. ginseng and H. tomentosa using HPLC-DAD-ESI-MS/MS and the effect of these extracts on the viability of astrocytes in vitro test.
Manuel S. PáezI,*; Francisco J. PáezI; Francisco J. TorresII
This image depicts the behavior of alanine density as a function of temperature and molality in aqueous solution 0.1000 m [bmim +] [BF4-].
Manoel de Jesus de Aquino LimaI,II; Quésia Guedes da Silva CastilhoI; Ridvan Nunes FernandesI; Auro Atsushi TanakaI; Boaventura Freire dos ReisII,*
Diagram of the flow system module based on the multicommutation flow analysis process for photometric determination of hydroquinone in pharmaceutical formulations.
Ana R. RibeiroI,#; Carlos AfonsoII,III; Paula M. L. CastroIV; Maria E. TiritanI,II,III,*
Biodegradation can be enantioselective and enantiomeric fraction quantification is important for improving environmental risk assessment of chiral pharmaceuticals.
Júnia H. Porto Barbosa*; Isis T. Souza; Antônio E. G. Santana; Marília O. F. Goulart
Advanced glycation (AGEs) and lipoxidation (ALEs) end products formation from carbohydrates or dicarbonyl compounds in proteins and their subsequent analysis, after enzymatic or acidic hydrolysis.
Aparecida M. S. Mimura*; Lara P. Faza; Rafael Marques; Mireille Le Hyaric; Marcone A. L. de Oliveira; Julio C. J. Silva
Free fatty acid determination was performed by capillary zone electrophoresis after ethanolic extraction of pequi oil samples. A new approach to acid digestion of pequi oil samples was developed for the determination of Cu, Fe, Zn and Mn by flame atomic absorption spectrometry.
Ana Luiza de QuadrosI,*; Eduardo Fleury MortimerII
Professor of universities can work with research, administration and extension. However, his biggest challenge is in the classroom and in the human formation.
Josefredo R. Pliego Jr.*
Use of Excel and iterative method to calculate the liquid-vapour equilibrium curve through the Redlich-Kwong equation and the Maxwell equal-area rule.
On-line version ISSN 1678-7064 Printed version ISSN 0100-4042
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