[PDF] Top 20 An. Acad. Bras. Ciênc. - vol.77 número4

... The dialectic dilemma quantity or quality is pervasive in all the history of biological evolution, and has been variously considered in relation to ge- nomics in recent years. Independently of the differ- ences in size ... See full document

... The GAG heparin has been the most commercially and therapeutically important sulfated polysaccha- ride. For the first 30 years of its clinical use, not much was known about its structure except that it was composed of ... See full document

... in an infected host, by forming peroxyni- trite (ONOO – ) (Sato et ...and an increase in oxidative damage, DNA fragmentation, and cytochrome c release in MnSOD – /+ mice which exhibit a 50% reduction in ... See full document

... The impossibility or implausibility of using drug treatments for PTSD or phobias makes the use of ex- tinction therapy not only desirable, but also mandatory (Beckett 2002, Davis et al. 2006a, Izquierdo et al. 2008, ... See full document

... According to Hrastinski (2008), participation is an intrinsic characteristic of teaching. The key to e-Learn- ing systems as a teaching activity and online learning is to multiply and facilitate participation ... See full document

... lungs, an increase in apoptotic cells has also been described, and may be associated not only with the extrinsic pathway, with enhanced expression of FasL and caspase, but also with mitochondrial pathway ... See full document

... Ethanolic extracts of C. sylvestris leaves have revealed anti-ulcer properties, a finding that corroborates its wide use in gastrointestinal disorders (Hoehne 1939, Fialho et al. 2010). Basile et al. (1990) showed that ... See full document

... Field data used in this paper were measured at three sites in the Amazon during the ABRACOS (Anglo Brazilian Amazonian Climate Observation Study) and LBA projects (Large-Scale Biosphere-Atmosphere Ex- periment in ... See full document

... larger than nutria (Myocastor coypus), 2 cm (Machado et al. 2009b). Conus medullaris is an important struc- ture for epidural anesthesia procedures (Barry 1956, Bruni and Zimmerl 1977, Dyce et al. 2004, Evans and ... See full document

... Given the nature of this article, qualitative meth- odologies were predominantly used when approaching the above setting. Concerning operational techniques and procedures, the following ones were performed: bibliographic ... See full document

... as an alternative resource for estimating climatic variables that may replace the traditional interpolation methods (Białobrzewski 2008, Sivapragasam et ... See full document

... of an adhesive tape (according to Barbosa et ...in an ethanol series, immersed in n-butyl acetate, and then mounted for permanent slides with a synthetic ... See full document

... For heterochromatin studies, the C-banding procedure was performed according to Schwarzacher et al. (1980) with minor modifications. Aged slides (3 days) were hydrolyzed in acetic acid 45% (60 ◦ C) for 12 min and, then, ... See full document

... other Phalangopsis through the following combination of characteristics: (i) ocelli present, forming an equilat- eral triangle; (ii) a rounded fore wing covering the first abdominal tergite (Fig. 1C); (iii) ... See full document

... an indicative that C. erectus leaves have lesser photo- synthetic pigments than the other species leaves, but this was not confirmed in this paper. In the NIR region (band 4), A. germinans presented higher values ... See full document

... with an investigation of Ser- jania salzmanniana (Sapindaceae) for biologically active substances, led to isolation of two saponins: salzman- nianoside A (3 - O([ β - D - glucopyranosyl - (1 → 4)] - [ α - L - ... See full document

... to an editorial line more concerned with reviews than original research ...of an author’s last name has been regarded as influential in citation potential (Tregenza 1997) and double-barreled names could end ... See full document

... fluid motion as a result of thermally induced medium inhomogeneities, demon- strated that at low frequencies the fluid motion around the electrodes, consisting of a couple of whirlpools [r] ... See full document

... The eco-volume efficiency (V e ), yield expressed in dry matter (ton DM), or energy (MJ) or money per lost eco-volume appears to be a powerful discriminat- ing tool. For example, to produce a ton of dry matter in the ... See full document

... animals an paucivascular area, it allowed the division of the body in two segments anatomo-surgical, which presented the distribution of segmentary branches described in Table ... See full document