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EDIÇÃO ATUAL vol. 42, No. 5, 2019
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Laser induced-breakdown spectroscopy (LIBS): histórico, fundamentos, aplicações e potencialidades
Vinicius C. Costa; Amanda S. Augusto; Jeyne P. Castro; Raquel C. Machado; Daniel F. Andrade; Diego V. Babos; Marco A. Sperança; Raimundo R. Gamela; Edenir R. Pereira-Filho*
LIBS applications in a myriad of samples: agriculture, food and electronic waste.
http://dx.doi.org/10.21577/0100-4042.20170325
Síntese e avaliação das atividades fotoprotetora, citotóxica e antiviral contra o Zika Vírus de derivados triazólicos da benzofenona
Angela M. A. LimaI; Róbson R. TeixeiraI,*; Bianca F. da SilvaI; Raoni P. SiqueiraII; Italo E. P. da SilvaIII; Edjon G. SantosIII; Maria Cecília FernandesI; Victor Hugo Sousa GonçalvesII; Gustavo C. BressanII; Tiago Antonio de Oliveira MendesII; Sérgio O. de PaulaIII; Adílson Vidal CostaIV; Marcelo H. dos SantosI
A series of triazolic benzophenone derivatives were synthesized and had their photoprotective, cytotoxic and antiviral against Zika Virus activities evaluated.
http://dx.doi.org/10.21577/0100-4042.20170365
Phytotoxic constituents from endophytic fungus Xylaria cubensis associated with Eugenia brasiliensis
Carolina R. BiasettoI; Andressa SomensiI; Viviane de C. P. AbdallaII; Lucas M. de AbreuIII; Sonia C. J. GualtieriII; Ludwig H. PfenningIV; Vanderlan da S. BolzaniI; Angela R. AraujoI,*
Phytotoxic constituents and other compounds isolated from Xylaria cubensis.
http://dx.doi.org/10.21577/0100-4042.20170367
Aplicação da espectroscopia raman na caracterização de minerais pertencentes a uma geocoleção
Adriele R. SantosI,II; Denise B. MenezesIII; Javier EllenaI,*; e Marcelo B. AndradeI
Raman Spectra of three pertaining samples of a mineral collection, correctly identified in this study by their mineral composition as calcite [CaCO3], spodumene [LiAlSi2O6] and muscovite [KAl2(Si3Al)O10(OH,F)2].
http://dx.doi.org/10.21577/0100-4042.20170358
Study of the Chromium(VI) removal from aqueous systems by cobalt nanoparticles
Patricia G. Leles; Mayra A. Nascimento; Jean C. Cruz; Paloma V. F. de Sous; Renata P. Lopes*
The Cr(VI) removal by Co-NPs occurs initially by the adsorption of the Cr(VI) species on the surface of NPs-Co. The Cr(VI) is reduced to Cr(III) on the surface of the Co-NPs. Also occurs the formation of Cr(OH)3, whose species are co-precipitated under the surface of the NPs-Co.
http://dx.doi.org/10.21577/0100-4042.20170363
Ring opening polymerization of L-lactide with two different zinc(II) phenoxy-imine complexes as initiators
Alana L. C. OliveiraI; Leonardo C. FerreiraI; Marcos L. DiasI,*; Rodrigo S. BitzerII; Marco A. C. NascimentoII
Two zinc(II) complexes containing phenoxy-imine ligands were synthesized and used as initiators in bulk ring opening polymerization (ROP) of L-lactide (LA) to produce high stereoregular poly(lactic acid).
http://dx.doi.org/10.21577/0100-4042.20170362
Characterization of silicon-aluminum-zirconium oxide obtained by the sol-gel process
Cristiano Nunes da SilvaI; José Márcio Siqueira JúniorII; Amanda Garcez VeigaI; Germildo Juvenal MuchaveIII; Donato Alexandre Gomes ArandaIII; Júlio Carlos AfonsoI; Emerson Schwingel RibeiroI,*
Synthesis and full characterization of a ternary oxide prepared by the sol-gel process followed by two washing procedures. A promising material for many applications such as dye/metal ion adsorption from effluents, among other applications.
http://dx.doi.org/10.21577/0100-4042.20170364
A new validated method for determination of roflumilast in tablet by CZE-UV
Tufan Güray*,#
In this study, new, rapid and sensitive capillary zone electrophoresis (CZE) method for the determination of roflumilast (RFL) developed. This validated method is the first example based on the determination of RFL by CZE.
http://dx.doi.org/10.21577/0100-4042.20170371
Metabolômica microbiana: inovações e aplicações
Joao Raul BelinatoI,II; Jaqueline Moraes BazioliI,III; Alessandra SussuliniI,II; Fabio AugustoI,II; Taícia Pacheco FillI,*
Microbial metabolomics has been applied in several microbiological areas. The metabolomics workflow mainly involves quenching and extraction of metabolites, instrumental analysis, processing and data analysis, all of these steps acting together essentially.
http://dx.doi.org/10.21577/0100-4042.20170324
Magnetometria in-situ para caracterização de materiais eletrodepositados
Vinícius C. De Franco*; Joao E. Schmidt
This paper presents a technical approach for in-situ magnetic properties studies of materials electrodeposits onto some types of substrates.
http://dx.doi.org/10.21577/0100-4042.20170366
Thermogravimetric and ftir analyzes of corn cob pyrolysis
Elías Ricardo Durango PadillaI; Gabriela Tami NakashimaI; Ana Larissa Santiago HanstedII; Luis Ricardo Oliveira SantosI; Joao Lucio de BarrosIII; Andrea Cressoni De ContiIV; Fabio Minoru YamajiI,*
In this study the pyrolysis process of corn cob was investigated using thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR).
http://dx.doi.org/10.21577/0100-4042.20170360
Dai-me agô (licença) para falar de saberes tradicionais de matriz africana no ensino de química
Anna M. C. Benitea*; Gustavo A. A. Faustino; Juvan P. Silva; Claudio R. M. Benite
We used plant phytochemical contributions in African matrix religions as contextualization elements for the teaching of chemistry.
http://dx.doi.org/10.21577/0100-4042.20170351
A contribuição do Brasil para a descoberta de um novo elemento químico - o paládio
Luciano E. FariaI,II; Carlos A. L. FilgueirasI,*
The discovery of palladium was confirmed in minerals from Minas Gerais, containing Pd in natural gold alloys, as in the sample shown above.
http://dx.doi.org/10.21577/0100-4042.20170349
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