[PDF] Top 20 An. Acad. Bras. Ciênc. - vol.73 número2

... we note that while both splitted waves undergo strong attenuation the signal is simultaneously amplified into two 2 π solitary waves with the same properties as the waves just absorbed at the pump frequency, ... See full document

... Stress: The presence or absence of stress represents yet another variable to be taken into consideration in such studies, certainly so in any extrapolation of these findings to humans. Stress is a major factor in ... See full document

... canthotomy, an incision was made in the fibrous connective tissue posterior to the right orbit, and the retrobulbar muscles and the periorbital fat tissues were carefully dissected in order to expose the ini- tial ... See full document

... However, the transfusion volume was frequently smaller than the desired because of the limited amount of blood available from one donor. Multiple trans- fusions were avoided in order to decrease the risk for transfusion ... See full document

... High contents of oil predominate in Vochysiaceae seeds, reaching up to 32% in V. pyramidalis, sample 52 (Table I). Contents of many samples analyzed are higher than those of soybean (12-24%), sunflower (22- 36%), cotton ... See full document

... High content screening systems such as the Ar- rayScan VTI from Cellomics and the ImageXpress UL- TRA from Molecular Devices are a more sophisticated approach in measuring cell viability. These instruments represent a ... See full document

... either an elongation of helix D or an ex- tension of the region connecting helix C to helix ...contains an extension in the region between helix C and D which forms a loop outside the body of the ... See full document

... countries, an area, estimated in the 90’s, corresponding to around 18 million ha (Hassan ...Brazil, an area of 500,000 ha of sugarcane has been treated with Trichogramma ... See full document

... Observed by SEM (Fig. 2) the spores are verrucate-tuberculate on the proximal face. Single or fused ridges are seen on the distal face. On ridge surfaces, the micro-ornamentation is verrucate-tuberculate, similar to that ... See full document

... coleoptiles, followed by the primary root, which is ephemeral. The rhizome originates from the mesocotyl and it promotes the vascular connection between the roots, leaves and scapes. The continuity of the tissues is ... See full document

... In shade plants, the water parenchyma has seven to nine layers of isodiametric and dorso-ventrally elongated cells in the base and in the middle of the leaves; and fi ve to seven laye[r] ... See full document

... In this paper, on the one hand, we obtain vanishing theorems of two classes of complete manifolds that satisfy weighted Poincaré inequalities (Theorems 2.2 and 2.7). At the same time, we apply Theorem 2.2 to minimal ... See full document

... collected and the solvent evaporated under reduced pressure. The lipid fraction was dried to constant weight in an oven at 60°C. Total lipids was also quantified according to the methodology of Bligh and Dyer ... See full document

... The success of a copepod culture depends on sur- vival and fecundity rates of the cultivated animals, which are limited by food availability (Checkley 1980), temp- erature (Gaudy et al. 2000), and water salinity (Car- ... See full document

... soil to improve the environmental quality, and, thereby, decrease the risk on the population. Based partially on the CLEA (Contaminate Land Exposure Assessment) model employed in England and Wales (Environment Agency ... See full document

... The study was in accordance with the “Principles of la- boratory animal care” (NIH publication No. 85-23, re- vised 1985), and was approved by the Institution’s An- imal Care and Use Committee. Experiments were ... See full document

... average an- nual directions and frequencies of winds (the latter re- dimensioned to 100%) (DHN 1993), regarding a time series from 1951 to 1972, that can generate waves di- rected to the coastline: NE (N45 ◦ ) – ... See full document

... The Arrozal Granite (AG) is an elongated body, with magmatic foliation in its central part and solid-state de- formation at the border. The magmatic fabric includes alignment of K-feldspar and biotite. In general, ... See full document

... in an established area and volume of a tissue, we have to develop special tools, such as, “d” calibration of a system (Weibel 1979) “forbidden line” to avoid overestimation of particles in a specific area ... See full document

... Plate II – Megaspores of I. sehnemii as seen with LM – Figure 9 – Section of the megaspore. The distal ornamentation (lower part of the photograph) consists of the highest structural elements of the silica cover (Si), ... See full document