[PDF] Top 20 An. Acad. Bras. Ciênc. - vol.85 número3

... Simplex centroid design is very useful in establishing optimal proportions among the various components of a mixture. In ultrasound- assisted extraction, acid solutions are usually used as extracting agents due to their ... See full document

... An in vitro assay was performed measuring the viability of Trypanosoma cruzi (Y strain) epimastigote forms growing in axenic culture using MTT assay (Cotinguiba et al. 2009). The parasites were grown axenically at ... See full document

... Therefore, cortical and medullar lymphocytes, although all being T-cells, have some major differences in their functional and maturational status. First, these two populations have different expression of TCR co-receptor ... See full document

... The relative importance of site versus substrate was assessed based on a partial canonical correspondence analysis (pCCA). This analysis used the taxa density matrix to partition the results into independent components, ... See full document

... In conclusion, we raised important aspects that will deepen our understanding regarding the mechanisms affecting leaf water enrichment and the diversity of ecophysiological behaviors in restinga plants. We demonstrated ... See full document

... is an urgent need to establish georeferenced baseline maps of plant and soil microbial distribution in order to evaluate future compositional changes through the ... See full document

... The fish immune system is responsible for destroying microorganisms through acquired and innate components, with humoral and cellular process that perform together in an attempt to prevent the outbreak of ... See full document

... the organic and reductive phases also occurred, while the carbonatic phase occurred in the speciation of Mn in less proportion, except in station 1, which showed a percentage of almost 20%. Great parts of manganese occur ... See full document

... 25922), respectively. A suspension of the tested mi- croorganism (0.5 of MacFarland Scale) was spread on Petri plates with Mueller Hinton agar (Difco Laborato- ries). A 2 mm hole diameter was opened on the surface of ... See full document

... (Azhar et al. 2004). In this study, the extracts of cvs. Larrañaga and São Gabriel significantly (p<0.05) inhibited the mycelia growth, at least in one of the fungi tested, indicating the importance of evaluating ... See full document

... (Kacelnick 1984, Jones 1987), bees that carry pollen to the colony (Schmid-Hempel 1986), hunting-wasps that store prey in their nests (Araújo and Gonzaga 2007) and leaf-cutting ants that carry leaf fragments (Burd 2000) ... See full document

... towards an in vivo cancer model, ascite-bearing female mice between 7 and 9 days postinoculation were sacrificed by cervical dislocation and a suspension of Sarcoma 180 cells was harvested from the intraperitoneal ... See full document

... capsule. An aliquot of this homogenized mixture of spores and water was collected using a Pasteur pipette and added to a Neubauer counting ...and an ocular micrometer we randomly measured the largest ... See full document

... Group composition was the same as described previously, but we are not sure if was the same group, especially with regards to the second adult. The calf was totally white in the dorsal region and in the head, which were ... See full document

... Fifty lettuce seeds (cv. Salad Bowl) were disposed in a transparent plastic box (GERBOX-11.4 × 11.4 cm) containing two sheets of germination paper (10.5 × 10.5 cm) embedding an amount of sample to be evalu- ated ... See full document

... We wish to thank the R.E.H.M. and its former direc- tor, E. Richard, for offering access to files and instal- lations, as well as C.P. Juárez, K. García, K. Soria, M. Juárez, M.C. Cocimano, R. Delgado, and I. Palacios ... See full document

... acetonitrile. An aliquot (2 µL) of each extract was analyzed on a Hewlett Packard model 1090, series II/M HPLC with a Waters Nova-Pak C-18 , 3 µm, column, with mobile phase gradient of CH3CN-H2O (48-52) for 25 min ... See full document

... Evaluation processes are slow to reflect and en- courage transformation in the direction of such action- focused science (Franklin 1997, Jacob 2001). As a result, even a supposedly application-oriented program such as ... See full document

... create an environment where the amorphous polymers of wood reach its glass transition temperatures and are softened, which allows internal tensions relieves by the molecu- lar and microstructural re-organization ... See full document

... The “Klason”-lignin content in the samples varied between 19.8% and 25.8%. In the heartwood samples, the lignin content was higher than in the sapwood. The higher content of “Klason”-lignin in the heartwood might be ... See full document