[PDF] Top 20 J. Braz. Chem. Soc. vol.20 número7
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J. Braz. Chem. Soc. vol.20 número7
... Durante minha gestão como presidente da Sociedade Americana de Química em 2008 e, agora, em 2009, como ex-presidente, fiz inúmeras palestras sobre a centralidade da química.. Fundamen[r] ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... We apportioned the elemental carbon (EC) component of ambient PM 2.5 attributable to emissions from spark ignition (SI) vehicles in samples collected over a three-year period in twelv[r] ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... The DNA strand break efficiencies induced by the copper complexes, in the presence or absence of S(IV), were determined by mixing the Cu(II) complex solution with 100 ng[r] ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... 16. Frisch, M. J.; Trucks, G. W.; 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.; ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... The differences between the Mn loadings before and after the catalytic reactions suggest that some complex leaching has occurred in all experimental conditions. This leaching occurred in different extents and with no ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... (LDH) assay, with lower LDH activity (525 ± 44 U/l) being observed in the presence of polyacetylene 1 compared with the positive control (2585 ± 114 U/l) (Figure 2B), indicating non[r] ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... Metal concentrations in all samples were below the threshold effect concentration, established by the consensus-based sediment quality guidelines for freshwater ecosystems, indicating[r] ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... that most diesel exhaust particle mass is associated with accumulation mode particles, ranging from 0.05 to 0.7 µm and centered at about 0.02 µm. The coarse mode (1-10 µm) accounts for 5-20% of diesel exhaust ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... TEM micrographs of silver particles deposited on montmorillonite surface are shown in Figure 3, together with the corresponding SAED patterns as insets. In the SAED patterns, which ar[r] ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... or Et 3 N as bases. We chose to use potassium carbonate because it is cheap as well as easy to remove after the reaction. Thus, a suitable carboxylic acid 1a-g was stirred in the presence of K 2 CO 3 in CH 2 Cl 2 for 30 ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... 33. Hussain, A. I.; Anwar, F.; Sherazi, S. T. H.; Przybylski, R.; Food Chem. 2008, 108, 986; Celiktas, O. Y.; Kocabas, E. E. H.; Bedir, E.; Sukan, F. V.; Ozek, T.; Baser, K. H. C.; Food Chem. 2007, 100, ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... 11. Shao, Y.; Molnar, L. F.; Jung, Y.; Kussmann, J.; Ochsenfeld, C.; Brown, S. T.; Gilbert, A. T. B.; Slipchenko, L. V.; Levchenko, S. V.; O‘Neill, D. P.; DiStasio, R. A.; Lochan, R. C.; Wang, T.; Beran, G. ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... A stirred mixture of 4,4-diethoxy-1,1,1-trifluoro-3- buten-2-one (1) (10 mmol), the respective S,S-disubstituted sulfoximide (2a or 2b) (10 mmol) and triethylamine (10 mmol) in acetonitrile (20 mL) was heated in ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... 21. Steenbock, W.; In Search of Sustainable Management of Carqueja (Baccharis trimera Lers) in the Central Region of Paraná, Southern Brazil; Alexiades, M.N. y Shanley, P. eds.; Productos Forestales, Medios de ... See full document
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J. Braz. Chem. Soc. vol.20 número7 en a01v20n7
... You are the future of the chemical sciences in your country and will be part of the increasingly important global network of chemists that will use our science to address prob[r] ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... For the preparation of the cation selective layer, aqueous solution of a mixture of poly(vinyl alcohol), (PVA Sigma-Aldrich, Mw 146,000-186,000), and poly(anetholesu[r] ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... A mixture of 1a (5 mmol) and N-acetylisatine (5 mmol) in absolute ethanol (100 mL) and few drops of piperidine was refluxed for 4 h, after cooling the reaction mixture was concentrated. The solid obtained was filtered, ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... This work describes the construction and characterization of an electrochemical flow-through microcell with the three electrodes (working, pseudo-reference, and auxiliary) inserted in microchannels with thickness smaller ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... últimos 20 anos, fatores econômicos, ambientais e técnicos têm caminhado juntos para gerar um pequeno, mas crescente, número de ecologistas químicos trabalhando na química e biologia dos feromônios na América do ... See full document
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J. Braz. Chem. Soc. vol.20 número7
... hydroxide; 20 mL of ethanol:ethyl acetate (5:95, v/v) and 30 mL ethyl ...and 20 mL of deionized water and 30 µL of triethylamine were ...with 20 mL of acetonitrile and the resulting extract ... See full document
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