[PDF] Top 20 J. Braz. Chem. Soc. vol.20 número8

J. Braz. Chem. Soc. vol.20 número8

... Thanks to the efforts of the scientiic community, of the National Council for Scientiic and Technological Development (CNPq), of the Brazilian Federal Agency for Support a[r] ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... 27 Studies showed that phytic acid interacts through phosphate groups with different metallic ions, to form heterometallic complexes of Zn(II) and Mn(II).. 28 The complexation [r] ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... and extract solution (20 µL) in phosphate buffer solution were mixed. The resulting solution was stirred for 10 s and transferred to a capillary tube, and placed in the EPR cavity as mentioned before. This ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... h J l still increase slowly while J d begins to ...maximum J d occurs before than that of maximum J l , then J d decreases with the decreasing concentration gradient between feed and ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... The remaining resistance is due, most likely, to the transport at intergrain boundaries. This expectation comes from the loose arrangement of grains in the pellets, which were not sintered after pressing, since that ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... Furthermore, chemically stable stationary phases having less acidic residual groups might be obtained with the preparation of metalized silica supports using other metal oxides,[r] ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... 341 Polarimeter. The IR spectra were recorded on an ATR- IR, Spectum One, Perkin Elmer spectrometer. The NMR spectra were measured in deuteriochloroform with TMS as the internal standard with a Bruker Avance DRX-400 or a ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... vessel was then allowed to warm to room temperature and stirred for 24 h, after which the reaction was quenched by adding 5 mL of water and the resulting reaction mixture concentrated. The solid residue was partitioned ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... 15. da Silva A. R.; da Silva, A. M.; Ferreira, A. B. B.; Bernardes, B. O.; da Costa, R. L.; J. Braz. Chem. Soc. 2008, 19, 1230; Silva, R. S. E.; de Amorim, M. B.; Pinto, M. D. C. F. R.; ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... A micelle-mediated phase preconcentration of trace quantities of Sn(IV) as a prior step to its determination by spectrophotometry has been developed, based on cloud point extraction (CP[r] ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... 47. Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Gill, P. M. W.; Johnson, B. G.; Robb, M. A.; Cheeseman, J. R.; Keith, T.; Petersson, G. A.; Montgomery, J. A.; Raghavachari, K.; Al-Laham, M. A.; ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... Branco River (white water, S01°14´, W61°50´), Caurés River (black water, S01°79´, W62°19´) and Iara Lake (black water, S01°20´, W62°03´), some of whose physical- chemical parameters are presented in Table 1. Iara ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... Creatine kinase (CK; E.C. 2.7.3.2) plays a central role in metabolism of high-energy consuming tissues such as brain, skeletal muscle and heart, where it functions as an effective buffering system of cellular adenosine ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... This paper demonstrates the possibility of simultaneously determining lead and copper in mineral, river and tap water by potentiometric stripping analysis using a [r] ... See full document

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J. Braz. Chem. Soc. vol.20 número8 pt v20n8a01

... Por outro lado, essa mesma comunidade poderá cobrar da Direção e do Conselho Consultivo da Sociedade Brasileira de Química a proissionalização de suas publicações [r] ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... To a solution of glutaric anhydride (0.10 g, 0.88 mmol) in acetone (3 mL), was added tryptamine (0.15 g, 0.93 mmol) dissolved in acetone (0.5 mL). The reaction mixture was stirred 20 min at rt. The solvent was ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... mechanism of the drug action at the cellular and molecular levels be better understood. Many anticancer drugs have been known to interact with DNA to exert their biological activities. Methylene blue (MB, Scheme 1) is a ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... All measurements were made with an ICP-MS (Elan DRC II Perkin Elmer, Norwalk, CT) operated with high-purity argon (99.999%, White Martins, Brazil). A Meinhard concentric nebulizer (Spectron/Glass Expansion, Ventura, CA, ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... MALDI-TOFMS measurements were performed by using an Ettan MALDI-TOF mass spectrometer (Amersham Biosciences), equipped with a nitrogen laser emitting at 337 nm and operating at an acceleration voltage of 20 kV. ... See full document

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J. Braz. Chem. Soc. vol.20 número8

... The arrangement of the dbso ligands differs from that observed by Nardelli and collaborators 14 in cis -dichloro- cis - bis (dimethylsulfoxide)- trans -diphenyltin(IV), cis -[Ph [r] ... See full document

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