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...
Glaucia Pantano; Guilherme M. Grosseli; Antonio A. Mozeto; Pedro S. Fadini
Phosphorus is a fundamental nutrient to life on planet, and essential for food production. Currently, the main source of phosphorus to agriculture are fertilizers obtained from phosphate rock, a nonrenewable resource, threatening the global food security.
Cristian J. Guerra; Jesús M. López; Said F. Figueredo; Adolfo E. Muñoz; Juana R. Robles
The nucleophilic power of the N-oxide group is related to the biological activity of quinoxaline 1,4 di-N-oxides against T. cruzi.
João G. P. Vicente; Patrícia M. Lima; Dilson Cardoso
In order to increase accessibility to catalytic sites, studies have been carried out in order to reduce the diameter of the particles of zeolites to the nanometer scale.
Edemar Kirchhof; Roberta Jachura Rocha; Nanci Miyeko Nakamura; Camila Maria Lapa; Glaci Ferreira Martins Pinheiro; Rene Francisco Boschi Gonçalves; José Atílio Fritz Fidel Rocco; Koshun Iha
Optical microscope image through PBX (80 % HMX) cluster with PBLH.
Farrukh Israr; Duk Kyung Kim; Yeongmin Kim; Wongee Chun
This picture depicts the scheme which has been employed in this manuscript for solvothermal synthesis of Ni-BTC. The organic linker H3BTC was dissolved in series of solvents and solvothermally reacted with NiNO3.6H2O(aqueous) for the production of Ni-BTC.
Gabriel J. Buralli; Darío J. R. Duarte; Nélida M. Peruchena
The nature of Mδ+···δ+C-Oδ- interactions in metal carbonyls can be explained through the topological analysis of the electron charge density and its Laplacian function within the framework of the Quantum Theory of Atoms in Molecules (QTAIM).
Arlene B. S. Nossol; Suzamar M. C. Rosa; Edson Nossol; Aldo J. G. Zarbin; Patricio Peralta-Zamora
Synergetic degradation of organic substrates by TiO2-graphene oxide nanocomposites: electron shuttling and preliminary adsorption of target compounds.
Tiago Pinheiro Braga; Nadine Essayem; Antoninho Valentini
An excessive increase in surface area was observed after Cu2+ insertion by wet impregnation from β-Al(OH)3 support, which is explained by the redissolution and recrystallization of bayerite to γ-Al2O3 during the impregnation of Cu2+.
Daniel L. Garcez; Amauri A. Menegário; José R. Ferreira; Warren T. Corns; Carlos A. Suárez; Ana M. C. M. Rolisola; Lauren N. M. Yabuki
Determination of tin in natural samples collected in area under anthropogenic action through atomic fluorescence spectrometry.
Jignasa N. Solanki; Preeti S. Mishra; Zagabathuni Venkata Panchakshari Murthy
Sulfonated poly(vinyl alcohol) (SPVA) membranes and in situ prepared TiO2 nanoparticles incorporated SPVA membranes are prepared to use in direct methanol fuel cell. Very low methanol permeability is observed with the prepared membranes. Proton conductivity of the membranes is higher than Nafion and high thermal stability is achieved with increased TiO2 nanoparticles concentration.
Jorge G. Figueroa; Luis F. Vargas
Three extraction methods were compared (SPME, SCF and SDE) for isolation of flavor compounds from roasted ground coffee of Vilcabamba (Ecuador). Identification and characterization of volatile compounds were achieved using gas GC-MS.
Laura P. Ióca; Stelamar Romminger; Mario F. C. Santos; Karin F. Bandeira; Fabiana T. Rodrigues; Miriam H. Kossuga; Karen J. Nicacio; Everton L. F. Ferreira; Raquel P. Morais-Urano; Messias S. Passos; Luciana K. Kohn; Clarice W. Arns; Lara D. Sette; Roberto G. S. Berlinck
A strategy for the rapid identification of fungal metabolites.
Leandra N. O. Neves; Paulo Henrique F. da Silva; Marcone A. L. de Oliveira
Spectrophotometric methods associated to chemometric analysis as an attractive approaching to determination of chemical modifications during UHT milk heat treatment assisting in a quality control process.
Lailton Passos Cortes Junior; Carmen Fernandez
Central words of social representations of environmental education of future teachers of chemistry.
Wallas S. Nascimento; Frederico V. Prudente
General behavior of the Shannon entropy Sx and Sp depending on the distance of confinement (xc). Highlight that the inflection of the curves is due to the influence of confinement, while the behavior of these for large xc tends toward a free system.
Renata Bellová; Danica Melicherčíková; Peter Tomčík
Serial precipitation of Cd2+, Cu2+, Zn2+, Mn2+ and Pb2+ ions forming various colored sulfides in bubblers with chemically generated hydrogen sulfide stream.
On-line version ISSN 1678-7064 Printed version ISSN 0100-4042
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