[PDF] Top 20 J. Braz. Chem. Soc. vol.25 número4
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J. Braz. Chem. Soc. vol.25 número4
... From a set of 210 samples seized by Brazilian Federal Police between 2009-2012, the chemical profiling routines of PeQui project to major components revealed that the illicit drug coc[r] ... See full document
14
J. Braz. Chem. Soc. vol.25 número4
... Determination of iron and copper was performed on a Shimadzu AA-670 atomic absorption spectrometer (Kyoto, Japan) under the recommended condition for each metal ion. The instrumental parameters were as follows: ... See full document
9
J. Braz. Chem. Soc. vol.25 número4
... The fatty acid palmitoleic (C16:1) was in the percentage of 19.6 on crude oil of buriti and percentage of 19.4 in refined oil from buriti. Will change to:[r] ... See full document
1
J. Braz. Chem. Soc. vol.25 número4
... monitored by UV between 200 and 400 nm and by positive ion ESIMS with a cone voltage of 25 V monitoring ions between m/z 180 and 700. Fractions Pame-3 and Pame-4 were pooled (38.4 mg) and further fractionated ... See full document
19
J. Braz. Chem. Soc. vol.25 número4
... Fenitrothion (99%) was obtained from Chem Service (West Chester, PA, USA). Methacrylic acid (MAA), p-vinyl benzoic acid (PVB) and ethyleneglycol dimethacrylate (EGDMA) were obtained from Fluka (Buchs, ... See full document
10
J. Braz. Chem. Soc. vol.25 número4
... Effect of acyl-CoA oxidase (ACO)-catalyzed reaction time on chemiluminescence (CL) intensity... This result indicates an excellent linearity of response that is compatible with a full[r] ... See full document
6
J. Braz. Chem. Soc. vol.25 número4
... microchip device used for this work is shown in Figure 1. The channel between sample reservoir (S) and sample waste reservoir (SW) was used for sampling and the channel between the buffer reservoir (B) and buffer waste ... See full document
7
J. Braz. Chem. Soc. vol.25 número4
... conditions, the FAME concentrations were the smallest in the organic phase, and COD was smaller in the aqueous phase than in the non-irradiated samples and the samples irradiated with[r] ... See full document
16
J. Braz. Chem. Soc. vol.25 número4
... The effects of impregnation methods (co-impregnation and sequential impregnation) and drying conditions (air and vacuum) on the structure and catalytic behavior of MCM-41 supported Ni-W[r] ... See full document
9
J. Braz. Chem. Soc. vol.25 número4
... of biodiesel in one-step, burn out the sample instead of digesting it, as shown in Figure 1A. Accordingly, the direct digestion procedure failed to eliminate the organic residues in solution which was attained by using ... See full document
7
J. Braz. Chem. Soc. vol.25 número4
... The feasibility and usefulness of the developed CE method was evaluated by the determination of 5-HTP in four different samples of commercial dietary supplements. The labeled concentra[r] ... See full document
5
J. Braz. Chem. Soc. vol.25 número4
... Although the BiVO 4 formation occurs at higher temperatures using alanine compared to urea fuel, these temperatures were lower than the samples synthesized with glycine.. The formati[r] ... See full document
8
J. Braz. Chem. Soc. vol.25 número4
... applied as the extractant and octanol worked as cloud point revulsant and synergic reagent for extraction, which lowered the cloud point temperature of Triton X-114 and assisted the s[r] ... See full document
7
J. Braz. Chem. Soc. vol.25 número4
... Table 1 shows specific surface area, total pore volume, average pore size, porosity and bulk density values, obtained by N 2 adsorption, Hg intrusion porosimetry and density.. measur[r] ... See full document
10
J. Braz. Chem. Soc. vol.25 número4
... 72. Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Scalmani, G.; Barone, V.; Mennucci, B.; Petersson, G. A.; Nakatsuji, H.; Caricato, M.; Li, X.; Hratchian, ... See full document
17
J. Braz. Chem. Soc. vol.25 número4
... Dois novos biflavonoides 3,5,7,4’-tetraidroxiflavanona-(2→O→4’:3→3’)-2’,4’,6’,4- tetraidroxidiidrochalcona (1) e 3,5,7,4’-tetraidroxiflavanona-(2→O→7:3→8)-3,4’,5,7- tetraidroxiflavona (2), denominados amburanina A e ... See full document
18
J. Braz. Chem. Soc. vol.25 número4
... Figure 6 presents the experimental curves of the variation of the TAN mass adsorbed in function of time for different initial concentrations of TAN for XAD-7 (Figure 6A) and silica ge[r] ... See full document
10
J. Braz. Chem. Soc. vol.25 número4
... In this work, nine metals were determined in superficial samples and sediment cores obtained from five sampling sites in the Preto, Turvo, and Grande Rivers during the wet and dry seaso[r] ... See full document
12
J. Braz. Chem. Soc. vol.25 número4
... Separation optimization experiments were conducted using a CE system (HP3d CE, Agilent Technologies, Palo Alto, California, USA) equipped with a diode-array detector, with indirect detection (inverted peak: 400 (± 2) nm ... See full document
11
J. Braz. Chem. Soc. vol.25 número4
... Migration of nonvolatile and inorganic residual compounds from post-consumer recycled polyethylene terephthalate (PET) submitted to cleaning processes for subsequent production of mate[r] ... See full document
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