[PDF] Top 20 J. Braz. Chem. Soc. vol.22 número5
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J. Braz. Chem. Soc. vol.22 número5
... The main RE importers, Japan and the United States, together with other countries, including Brazil, have initially tried more favorable trade agreements while, in the meantime, they started internal management to resume ... See full document
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J. Braz. Chem. Soc. vol.22 número5
... Instrumental precision was determined by six replicate determinations of standard solution, i.e. repeatability. Method precision or intra-assay precision was performed by preparing six different samples involving ... See full document
6
J. Braz. Chem. Soc. vol.22 número5
... 31. Yoshino, A.; Okabayashi, H.; Shimizu, I.; O’Connor, C. J.; Colloid. Polym. Sci. 1997, 275, 672; Guo, Z. X.; Yu, J.; J. Mater. Chem. 2002, 12, 468; Yokoi, T.; Yoshitake, H.; Tatsumi, T.; ... See full document
9
J. Braz. Chem. Soc. vol.22 número5
... Tomasi, J.; Barone, V.; Mennucci, B.; Cossi, M.; Scalmani, G.; Rega, N.; Petersson, G. A.; Nakatsuji, H.; Hada, M.; Ehara, M.; Toyota, K.; Fukuda, R.; Hasegawa, J.; Ishida, M.; Nakajima, T.; Honda, Y.; ... See full document
13
J. Braz. Chem. Soc. vol.22 número5
... A low-based analytical procedure exploiting multicommutation is proposed for captopril determination and the construction of dissolution curves.. The coeficient of variat[r] ... See full document
7
J. Braz. Chem. Soc. vol.22 número5
... to the coordination sphere of the metal ion. The number and postulated nature of neighbours, the absorber-neighbours distances, the Debye-Waller factors and other parameters resulting from quantitative analyses of EXAFS ... See full document
17
J. Braz. Chem. Soc. vol.22 número5
... (Table 1) showed a singlet at d 12.27 ppm from a hydroxyl group H-bonded to a carbonyl, two doublets attributed to meta-coupled aromatic hydrogens, H-5 (d 6.88 ppm) and H-7 ( d 6.86 ppm) and two double doublets at d 6.60 ... See full document
21
J. Braz. Chem. Soc. vol.22 número5
... A solution of the (22R)-alcohol 3a (155 mg, 0.362 mmol), triethyl orthoacetate (0.23 mL, 1.25 mmol) and propionic acid (12 µL, 0.161 µmol) in xylene (5.0 mL) was heated at relux under N 2 for 3 h. The mixture was ... See full document
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J. Braz. Chem. Soc. vol.22 número5 pt v22n5a01
... O consumo mundial de TR foi, em 2010, de, aproximadamente, 125 mil toneladas e cresce de 5 a 10% ao ano. Estima-se que, pelo menos, dois anos seriam necessários para que os países (EUA – 19 mil toneladas em Mountain ... See full document
2
J. Braz. Chem. Soc. vol.22 número5
... from Chem Service (West Chester, PA, USA), permethrin (PMT) (98% purity) and cypermethrin (CMT) (92% purity, used as the internal standard) were purchased from Sigma-Aldrich (Seelze, ... See full document
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J. Braz. Chem. Soc. vol.22 número5
... Sequential voltammetric determinations of chromium, thallium, cadmium, lead, copper and antimony were based on the effect of the supporting electrolyte pH gradient on both t[r] ... See full document
8
J. Braz. Chem. Soc. vol.22 número5
... The present work presents the distributions of the trace metals Cd, Cr, Cu, Ni, Pb and Zn in surface sediments of the Sergipe River (Sergipe State, northeast Brazil), obtained using t[r] ... See full document
9
J. Braz. Chem. Soc. vol.22 número5
... 14. Bold, G.; Altmann, K. H.; Frei, J.; Lang, M.; Manley, P. W.; Traxler, P.; Wietfeld, B.; Brueggen, J.; Buchdunger, E.; Cozens, R.; Ferrari, S.; Furet, P.; Hofmann, F.; Martiny-Baron, G.; Mestan, ... See full document
21
J. Braz. Chem. Soc. vol.22 número5
... Owing to the long-chained molecules, cohered by a limited number of cross-linkages, the elasticity of gelatin ilms resembles that of rubber. Based on such polymeric arrays, it becomes possible to create matrix systems ... See full document
11
J. Braz. Chem. Soc. vol.22 número5
... The predominant complex stoichiometry in aqueous buffer solution at this pH and formation constant were obtained by using Job’s method and Scatchard diagram, respectively.. The complex[r] ... See full document
11
J. Braz. Chem. Soc. vol.22 número5
... It can be observed in Figure 5A that in the irst 10 min of electrolysis only a low phenol removal was attained, probably due to the formation of organic intermediate com[r] ... See full document
9
J. Braz. Chem. Soc. vol.22 número5
... The authors are grateful to Fundação de Amparo à Pesquisa do Estado do Pará (FAPESPA), Conselho Nacional de Desenvolvimento Cientíico e Tecnológico (CNPq) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior ... See full document
7
J. Braz. Chem. Soc. vol.22 número5
... 9. Kwon, J.-W.; Armbrust, K. L.; Environ. Toxicol. Chem. 2005, 24, 1618; Narasa, A.; thesis available: www.eprints. csirexplorations.com/46/1/Abstract.docx, 2008, chapter 3. 10. Meng, Q. H.; Gauthier, D.; ... See full document
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J. Braz. Chem. Soc. vol.22 número5
... The electrochemical behavior of dexamethasone, a steroid hormone, was studied on a multiwalled carbon nanotube (MWCNTs) modiied pencil electrode (PE) by square wave[r] ... See full document
8
J. Braz. Chem. Soc. vol.22 número5
... Arsenic and mercury determinations were accomplished in 28 sediment samples from the São Francisco River Basin, Minas Gerais, Brazil.. For sample pretreatment were employed a pseudo-to[r] ... See full document
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