[PDF] Top 20 J. Braz. Chem. Soc. vol.20 número2
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J. Braz. Chem. Soc. vol.20 número2
... comemoração ao 20º aniversário do JBCS, com contribuições de colegas que durante esses anos estiveram mais proximamente ligados à revista, em atividades editoriais ou, destacadame[r] ... See full document
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J. Braz. Chem. Soc. vol.20 número2
... The hydazines/hydrazides (1.0 mmol) and Sc(OTf) 3 (2 mol %) were placed in a Schlenk reaction tube with efficient stirring or mixing, then 1,3-diketone (1.0 mmol) was added. The mixture was stirred for 20 min at ... See full document
29
J. Braz. Chem. Soc. vol.20 número2
... The aim of the present work is to investigate the chemical profile of these hydrodistilled oils from the leaves and flowers of this rare species of the rocky fields of the B[r] ... See full document
12
J. Braz. Chem. Soc. vol.20 número2
... The DGT technique was shown to be a robust procedure for the quantification of trace metals in the water column in distinct sites of the Patos Lagoon, indicating the potential of the [r] ... See full document
8
J. Braz. Chem. Soc. vol.20 número2
... 8. Parish, R. V.; Long, G. J.; Mössbauer Spectroscopy Applied to Inorganic Chemistry, Plenum Press: New York, 1984; Zhao, A.; Carraher, C.E.; Barone, G.; Pellerito, C.; Scopelliti, M.; Pellerito, L.; Polym. ... See full document
10
J. Braz. Chem. Soc. vol.20 número2
... In the investigation of sample stability, the concentration of all analytes was significantly reduced after the first freeze/ thaw cycle (Figure 4). This is likely because the precipitation of part of mucus and proteins ... See full document
12
J. Braz. Chem. Soc. vol.20 número2
... The mono-benzyl-glycerol ether was the main product in the reactions catalyzed by β zeolite and Amberlyst-35 acid resin, whereas di-benzyl-ether was formed in higher yield with the u[r] ... See full document
4
J. Braz. Chem. Soc. vol.20 número2
... with a BRUKER DRX-250 AVANCE spectrometer at 250.0 and 62.5 MHz, respectively. Mass spectra were recorded on a FINNIGAN-MAT 8430 mass spectrometer operating at an ionization potential of 20 eV. Elemental analyses ... See full document
4
J. Braz. Chem. Soc. vol.20 número2
... The air-dried and pulverized roots (500 g) of R. leptopetala were washed with 20% (v/v) aqueous NH 4 OH, and extracted with CH 2 Cl 2 in a Soxhlet apparatus. The organic solution was distilled under reduced ... See full document
15
J. Braz. Chem. Soc. vol.20 número2
... Solvents were removed under reduced pressure and the dichloromethane residue (8.2 g) was submitted to column chromatography, carried out in a gradient system from hexane,[r] ... See full document
11
J. Braz. Chem. Soc. vol.20 número2
... Powdered roots (330 g) were extracted in CHCl 3 for 7 days. The CHCl 3 extract was concentrated to a small volume at reduced pressure to yield 1.3 g of oily residue. This residue was fractionated on a silica gel column ... See full document
4
J. Braz. Chem. Soc. vol.20 número2 en a01v20n2
... As an Editor, Maria has had decisive participation in a large number of events during JBCS maturing phase: in the preparation and implementation of the on-line manuscript s[r] ... See full document
1
J. Braz. Chem. Soc. vol.20 número2
... The ESI-MS data were handled by principal component analysis (PCA) to differentiate both green and roasted Arabica coffees with different stages of ripeness (green or imma[r] ... See full document
9
J. Braz. Chem. Soc. vol.20 número2
... Square-Wave Voltammetric Determination of Acetylsalicylic Acid in Pharmaceutical Formulations using a Boron-Doped Diamond Electrode without the Need of Previous.. Alkaline Hydrolysis St[r] ... See full document
7
J. Braz. Chem. Soc. vol.20 número2
... Aiming at contributing to the understanding of how the synthesis temperature and the side chain length affect the photoelectrochemical properties of substituted ter[r] ... See full document
7
J. Braz. Chem. Soc. vol.20 número2
... 13. Alcalde, E.; Mendoza, J.; Garcia-Marquina, J. M.; Almera, C.; Elguero, J.; J. Heterocycl. Chem. 1974, 11, 423; Sanz, D.; Claramunt, R. M.; Saini, A.; Kumar, V.; Aggarwal, R.; ... See full document
9
J. Braz. Chem. Soc. vol.20 número2
... DOASIS software (University of Heidelberg). Downwind transects at the industrial park perimeter and perpendicular to the wind direction permitted calculation of emission fluxes by integrating the column concentrations ... See full document
8
J. Braz. Chem. Soc. vol.20 número2
... GC was employed to identify the composition of the aromatic fraction of the asphalt binder, relying on their retention times and comparing to those of the standard PAHs. The gas chromatograph was a CG17A-Shimadzu coupled ... See full document
7
J. Braz. Chem. Soc. vol.20 número2
... Arterial hypertension is one of the diseases with major prevalence in the world, being estimated that one in six habitants is affected by this health problem. Although caused by still unknown factors, some risk factors ... See full document
7
J. Braz. Chem. Soc. vol.20 número2
... As the contribution of these peaks are minor and can hardly be seen in Figure 1, they will be highlighted in the following Figures. As it is possible to see from Table 1, the majorit[r] ... See full document
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