Recent Papers - Machine Learning Special Issue
Reviews/Accounts - last 5 years
Who is Reading and Who is Citing the JBCS?
Esteban F. Durán-Lara; Fabian Avila-Salas; Sebastian Galaz; Amalraj John; Adolfo Maricán; Margarita Gutiérrez; Fabiane M. Nachtigall; Fernando D. Gonzalez-Nilo; Leonardo S. Santos
How to cite this articleComparative in-silico/experimental study of functionalized dendrimers for nano-detoxification of organophosphate agents. The rational design of these nanoparticles allows increase their affinity and ability to capture organophosphates. Details are presented in the Article Nano-Detoxification of Organophosphate Agents by PAMAM Derivatives by Esteban F. Durán-Lara, Fabian Avila-Salas, Sebastian Galaz, Amalraj John, Adolfo Maricán, Margarita Gutiérrez, Fabiane M. Nachtigall, Fernando D. Gonzalez-Nilo and Leonardo S. Santos on page 580.
Joaquim A. Nóbrega; Watson Loh
How to cite this article
Wei Chen; Ren-Zun Zhang; Xiao-Yan Lu; Jian-Wu Xie
How to cite this article
The enantioselective synthesis of highly functionalized cyclohexa-1,3-dienes was achieved via an organocatalytic one-pot three-component domino reaction.
Moïse Fouodjouo; Samuel Laminsi; Georges Y. Kamgang; Michele T. Mengue; Nito A. Debacher
How to cite this article
Glidarc plasma completely mineralized glyphosate into CO2, NH4+ and PO43−. The kinetics has been studied and a plausible degradation pathway has been proposed.
Fábio dos S. Grasel; Tiago E. de Oliveira; Paulo A. Netz
How to cite this article
Quantum calculations, docking and molecular dynamics simulations were performed, analyzing the interactions between six 2-(2'-hydroxyphenyl)-benzoxazoles derivatives and the dodecamer d(CGCGAATTCGCG)2. They showed favorable interactions, without DNA denaturation, and may act as potential biological probes.
Deiver A. Teixeira; Marco A. G. Valente Jr.; Assis V. Benedetti; Gustavo T. Feliciano; Sebastiao C. da Silva; Cecílio S. Fugivara
How to cite this article
Amine-based volatile corrosion inhibitors (VCI) are adsorbed on Zn surface under a VCI positive vapor pressure environment, and the adsorbed inhibitors are easily removed by opening the container having the pieces, saving costs and time to clean the metallic surface.
Bagher Sobhanmanesh; Mostafa Najafi
How to cite this article
This paper describes a carbon paste electrode modified with Prussian Blue for selective determination of unsymmetrical dimethylhydrazine (UDMH) in the presence of hydrazine.
Camelia Ungureanu; Daniela Ioniţă; Elena Berteanu; Luminiţa Tcacenco; Adina Zuav; Ioana Demetrescu
How to cite this article
New membranes have been elaborated and their physicochemical properties were assessed. The water absorption permitted the evaluation of the diffusion coefficient and the enhancement of antibacterial activity and hemolytic properties was emphasized.
Thiago Claus; Oscar O. Santos Júnior; Janksyn Bertozzi; Swami A. Maruyama; Sylvio V. Palombini; Eduardo J. Pilau; Carlos A. P. da Camara; Makoto Matsushita; Jesuí V. Visentainer
How to cite this article
The PTOCO (P = Prompt, TO = TOugh and CO = eCO-friendly) system of mini-scale antioxidant compounds extraction attends the need of obtain extracts in sufficient amounts for rapid and efficient application at several analytical methods, turning the routine of analysis in something more enjoyable.
Suelem Kaczala; Adilson B. Costa; Ederson L. Posselt; Juliano S. Barin; Erico M. M. Flores; Valderi L. Dressler
How to cite this article
A solid sampling electrothermal vaporization inductively coupled plasma optical emission spectrometry (ETV-ICP OES) method was developed for element determination in pharmaceuticals.
Marcos P. Silva; Matthieu Tubino; Tereza C. R. Elsholz; Olaf Elsholz; Sabir Khan; Marta M. D. C. Vila
How to cite this article
A flow-injection spectrophotometric procedure was developed for screening organophosphorus pesticides. The method is based on the inhibition of acetylcholinesterase immobilized on controlled porous glass beads with acetylcholine chloride as the substrate.
Samara Garcia; Fabiana Gerondi; Thiago R. L. C. Paixao; Marco A. Z. Arruda; Ivanise Gaubeur
How to cite this article
A procedure of sequential trace-level Cd and Pb determination by thermospray flame furnace atomic absorption spectrometry, after cloud point extraction, was developed. The proposed method presents high sensibility, low reagent consumption and reduced waste disposal.
Juliane Z. Marinho; Lidiaine M. Santos; Leilane R. Macario; Elson Longo; Antonio E. H. Machado; Antonio O. T. Patrocinio; Renata C. Lima
How to cite this article
(BiO)2CO3 nanosheets have been successfully prepared by a rapid reaction using the hydrothermal method combined with microwave heating. The as prepared (BiO)2CO3 nanosheets presented good photocatalytic activity for degradation of organic dye Ponceau P4R under UV-Vis light.
Andréa A. M. Shimojo; Aline M. B. Pires; Rafael Lichy; Maria H. A. Santana
How to cite this article
The effects of the alkaline medium of the reaction mixture on the swelling and rheological properties of hyaluronic acid (HA) microparticles crosslinked with divinyl sulfone with regard to the interplay between the HA conformation and the extension of the crosslinking reaction.
Célio F. F. Angolini; Eduardo J. Pilau; Patrícia F. Lopes-Oliveira; Isabel N. S. Garcia; Fábio C. Gozzo; Valéria M. de Oliveira; Anita J. Marsaioli
How to cite this article
Indigenous bacteria isolated from a crude oil sample were successfully classified in groups which match exactly with molecular identification using the gyrB gene sequence, showing the advantages of using this technique to build petroleum bacteria database.
Samrat Devaramani; Ramakrishnappa Thippeswamy; Nathan S. Lawrence
How to cite this article
Size reduced iron nitroprusside particles modified carbon paste electrode has been used for the electrochemical oxidation and reduction of NO2- and S2O82- respectively.
Miriany A. Moreira; Leiliane C. André; Alexandra B. Ribeiro; Marco D. R. G. da Silva; Zenilda L. Cardeal
How to cite this article
The graphical abstract exemplifies the comparison between two methods of gas chromatography.
Yu Wang; Xiaoling Zhou; Yuqin Ma; Xuejun Kang
How to cite this article
Sodium dodecyl sulfonate incorporated polystyrene electrospun nanofibers was prepared and applied in ion exchange solid phase extraction.
Min Zhou; Jie Lou; Yin-Ke Li; Yue-De Wang; Kun Zhou; Bing-Kun Ji; Wei Dong; Xue-Mei Gao; Gang Du; Qiu-Fen Hu
How to cite this article
New butyrolactones aspernolides C and D isolated from Aspergillus versicolor.
Raquel O. Lopes; Simon Grimm; Joyce B. Ribeiro; Ivana C. R. Leal; Leandro S. M. Miranda; Rodrigo O. M. A. de Souza
How to cite this article
This report showed the bioreduction of ethyl 3-oxohexanoate by immobilized Kluyveromyces marxianus cells and tert-butyl 3-oxobutanoate by immobilized Rhodotorula rubra cells under continuous flow conditions leading to the desired β-hydroxy esters corresponding in high yields and enantiomeric excess.
Mingfang Yan; Dongjie Yang
How to cite this article
The configuration of PSL at the air/liquid interface will change from disorder to regularly as the concentration of PSL and the ionic strength of solution increase, but it will array from tightly to loose as the pH value of solution increases.
Eric S. Sales; Juliana M. F. M. Schneider; Marcos J. L. Santos; Adailton J. Bortoluzzi; Daniel R. Cardoso; Willy G. Santos; Aloir A. Merlo
How to cite this article
Quinolines were synthesised by three-component reaction using Fe(III) and Yb(III) catalysts. From a single-crystal X-ray analysis for a synthesised quinolone, quinolyl and naphtyl groups connected to the C3 and C24 carbon atoms are twisted by torsion angle of 65.2°.
Ana P. Lopes; Vanessa V. A. Schneider; Paula F. Montanher; Ingrid L. Figueiredo; Hevelyse M. C. Santos; Swami A. Maruyama; Angela M. M. Araújo; Jesuí V. Visentainer
How to cite this article
Response surfaces were obtained from a 22 factorial design for total n-3 fatty acids and n-6/n-3 and polyunsaturated fatty acids (PUFA)/saturated fatty acids (SFA) ratios in lipids of Nile tilapia fed with diets containing soybean oil.
Esteban F. Durán-Lara; Fabian Avila-Salas; Sebastian Galaz; Amalraj John; Adolfo Maricán; Margarita Gutiérrez; Fabiane M. Nachtigall; Fernando D. Gonzalez-Nilo; Leonardo S. Santos
How to cite this article
Polyamidoamine (PAMAM) derivatives showed in in vitro studies the ability to capture methamidophos efficiently and could be used as an antidote to maintain acetylcholinesterase activity in poisoning events.
Hossein Tavallali; Rozita Nejabat
How to cite this article
The first speciation of V(VI/V) ions with optical sensor, which is more superior in terms of sensitivity and simplicity.
Keke Chen; Wei Yan; Xiaofang Zhang; Yingying Kuang; Xiujuan Tang; Xiaoxiang Han
How to cite this article
Sulfonated organic heteropolyacid salts with superior esterification rate, excellent durability, and unique self-separation property desirable for facile recovery and recycling during homogeneous synthesis of isoamyl isovalerate are reported.
Rafael Marques; Fernando A. S. Vaz; Hudson C. Polonini; Marcone A. L. de Oliveira
How to cite this article
A 23 factorial design was employed to optimize separation between estriol, 17-β-estradiol and progesterone by capillary electrochromatography through a monolithic column based on 3-(methacryloxypropyl)trimethoxysilane monomer. Once optimized, the method was applied to the quantitative analysis of a transdermal emulsion.
Abolfazl Valadkhani; Mohammad Asadollahi-Baboli; Ahmad Mani-Varnosfaderani
How to cite this article
The Monte-Carlo sampling strategy was implemented in Bayesian regularized genetic neural network (BRGNN) algorithm for quantitative structure-activity relationship modeling of acetyl-CoA carboxylase (ACC) inhibitors. The calculated activities using BRGNN algorithm in this work are in good agreement with experimental values. The results of the present work emphasizes on the role of positive charge and polarity of molecules on ACC inhibitory activity.
Online version ISSN 1678-4790 Printed version ISSN 0103-5053
Journal of the Brazilian Chemical Society
JBCS Editorial and Publishing Office
University of Campinas - UNICAMP
13083-970 Campinas-SP, Brazil
Free access