[PDF] Top 20 J. Braz. Chem. Soc. vol.23 número6
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J. Braz. Chem. Soc. vol.23 número6
... Ao lançar os periódicos: Química Nova, Journal of the Brazilian Chemical Society ( JBCS ), Química Nova na Escola.. e, recentemente, a Revista Virtual de Química (RVq), a SBQ mostrou[r] ... See full document
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J. Braz. Chem. Soc. vol.23 número6
... 29. Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Scalmani, G.; Barone, V.; Mennucci, B.; Petersson, G. A.; Nakatsuji, H.; Caricato, M.; Li, X.; Hratchian, ... See full document
10
J. Braz. Chem. Soc. vol.23 número6
... Agreement obtained for F after pyrohydrolysis of CNT using (A) water (vapor condensed during pyrohydrolysis reaction) and ammonium hydroxide and (B) ammonium carbonate as absorbing sol[r] ... See full document
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J. Braz. Chem. Soc. vol.23 número6
... 21. Xu, C.; Liu, Y.; Yuan, D.; Int. J. Electrochem. Sci. 2007, 2, 674. 22. Kudo, S.; Maki, T.; Miura, K.; Mae, K.; Carbon 2010, 48, 1186. 23. Shen, W.; Li, Z.; Liu, Y.; Recent Pat. Chem. Eng. 2008, ... See full document
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J. Braz. Chem. Soc. vol.23 número6
... 26. Frisch, M. J.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R., Montgomery Jr., J. A.; Vreven, T.; Kudin, K. N.; Burant, J. C.; Millam, J. M.; Iyengar, S.S.; ... See full document
12
J. Braz. Chem. Soc. vol.23 número6
... Essentially, DLLME included the rapid addition to an aqueous sample contained in a conical test tube of a mixture of two selected solvents, few microliters of a water-immiscible extra[r] ... See full document
8
J. Braz. Chem. Soc. vol.23 número6
... Extraction percentages obtained in optimization of the LLE-LTP technique for pesticides in grape juice: (a) volumetric ratio of sample to solvent, (b) ionic force, (c) extractor mixture[r] ... See full document
12
J. Braz. Chem. Soc. vol.23 número6
... This study investigates the promoting effect of PtSnIr/C (1:1:1) electrocatalyst anode, prepared by polymeric precursor method, on the ethanol oxidation reaction in a direct ethanol fu[r] ... See full document
8
J. Braz. Chem. Soc. vol.23 número6
... Graduation Program Coordinators, for example, can start by adopting a High School, building up laboratories for chemistry classes. Is that little[r] ... See full document
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J. Braz. Chem. Soc. vol.23 número6
... CITH cyclic voltammograms obtained at both bare and MWCNT modified GC electrodes, at a given scan rate ( ν ) are shown in Figure 2.. Reproducible voltammetric signals were obtained fo[r] ... See full document
10
J. Braz. Chem. Soc. vol.23 número6
... SWASV voltammograms for 50 ppb Pb(II) and Cd(II) in 0.1 mol L -1 acetate buffer (pH 4.5) in the presence of 500 ppb Bi(III): a solution of analytes continuously wicking the filter pap[r] ... See full document
7
J. Braz. Chem. Soc. vol.23 número6
... To explain the key step of the reaction between azidium ion and nitroalkenes, B3LYP/6-31g (d) calculations of stationary structures of azidium ion and nitroalkenes (1a-j) have been performed. It turned out that ... See full document
15
J. Braz. Chem. Soc. vol.23 número6
... 5. Maia, R. C.; Vasconcelos, F. C.; Bacelar, T. S.; Salustiano, E. J.; da Silva, L. F. R.; Pereira, D. L.; Moellman-Coelho, A.; Netto, C. D.; da Silva, A. J. M.; Rumjanek, V. M.; Costa, P. R. R.; Invest. ... See full document
5
J. Braz. Chem. Soc. vol.23 número6
... The authors are indebted to several CE-CERT individuals: J. M. Norbeck, ex-director, for providing internal CE-CERT research funds used to carry out this study, to D. J. Martis, T. D. Durbin, R. L. Rettig, ... See full document
6
J. Braz. Chem. Soc. vol.23 número6
... Additionally, a strong positive correlation was established between the concentration of Fe in the hydrophobic fraction assessed and the optical density of dark honeys, indicating a po[r] ... See full document
6
J. Braz. Chem. Soc. vol.23 número6
... Several factors that influence the microextraction efficiency, such as type and amount of extraction and dispersive solvents, acidity of sample solution, concentration of the chelating[r] ... See full document
8
J. Braz. Chem. Soc. vol.23 número6
... In order to study the speciation of Al 3+ hydrolytic complexes, the ESI-MS spectra were recorded at different pH values (3.20 to 6.20) and at a constant aluminum concentration of 2.7[r] ... See full document
11
J. Braz. Chem. Soc. vol.23 número6
... Due to all features studied in this transformation, it was possible to conclude that ionic liquid effect was more than just the stabilization of the charged and polar intermediates, r[r] ... See full document
21
J. Braz. Chem. Soc. vol.23 número6
... The UV-Vis spectrum of the undoped PANI dissolved in dimethyl sulfoxide (DMSO) solution has two absorption band at 332 and 634 nm as shown in Figure 9a. The first absorption band corr[r] ... See full document
10
J. Braz. Chem. Soc. vol.23 número6
... The decomposition process in alkaline medium was studied in the induction and progressive conversion periods, and the reaction order and activation energy were determined for each case[r] ... See full document
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