J. Braz. Chem. Soc. vol.18 número5

UV-Vis absorption and photoluminescence emission (PL) spectra of the ZnS nanotubes are shown in Figure 3 (a) and (b), respectively. The UV-Vis absorption spectrum (Figure 3a)

Ambiental levels of formaldehyde and acetaldehyde were measured at three sites in the city of Londrina: at the central bus station, downtown (night and day profiles) and in a

In this context, in the present study a rapid method was developed and validated, based on liquid-liquid extraction using methanol as a solvent and on direct analyte determination

When the mixture of 4-phenyl-3-butyn-2-one (1c), diphenyl diselenide (2a) and Al 2 O 3 /NaBH 4 (0.080 g) was irradiated with MW (548W, Method B), it was observed complete

Number of water molecules inside the CD cavity as a function of time, for the final 1 ns of each simulation (left panel), and the distance between the four water molecules

The Mexican hat wavelet function was applied to the absorption spectra of quinapril and hydrochlorothiazide in the spectral range of 200-320 nm for standard series of drugs in

Single grain Th/Pb ages were also determined for the monazite sample from Black Sands beach, nine grains were analyzed and the mean value, (530 ± 26)Myears, is in agreement with

Phosphoric acid reacted with the CeOH group, resulting in dihydrogen phosphate species attached to the matrix surface, according to the following equation:. SiO 2 /CeOH + H 3 PO 4 SiO