[PDF] Top 20 An. Acad. Bras. Ciênc. - vol.74 número1

... It is commonly accepted that the regenera- tive capacity of different nervous centers depends on whether they have finished their neurogenetical schedules. Fishes show postnatal neurogenesis in their spinal cord and they ... See full document

... biotechnology sector which, along with the mergers and acquisitions with concomitant downsizing that are occurring among the large pharmaceutical com- panies (Cavalla 1998) provides an opportunity for new players ... See full document

... 3. An evaluation of physical space conditions to build or adapt a small laboratory similar to the architecture project shown in Figure 1. The mini laboratory can be adapted in a room with dimensions of 3 m×3m, ... See full document

... and an- other one indicates that definitive results will depend on progress in technical procedures of extraction, identification and bioessays of natural ... See full document

... made to a factor range of 100 to 175 times. The control treatment with no dye effluent addition was represented as normal BBM. The microalga was acclimated to the BBM using semi-continuous batch system. When the ... See full document

... We studied the reproductive system of B. cydoniifolia in the three canjiqueirais through controlled pollination in marked inflorescences and buds bagged with TNT bags (cotton threads and cellulose fiber fabric) for ... See full document

... The experiment was carried out at the Department of Animal Science at the Universidade Federal de Viçosa, located in the municipality of Viçosa-MG, Brazil. Viçosa is situated at 20° and 45’ latitude south, 42° and 51’ ... See full document

... and Rehan (2003) documented that the average number of drugs per prescription was as high as three drugs. The average number of drugs is an important indicator to assess rational practice in drug prescribing. The ... See full document

... is an important factor to consider for the successful use of these species in the field, since unfertilized eggs produce male individuals (Pratissoli et ... See full document

... Until the 1960s, the separation between basic and applied research was a dominant idea in the scientific and technological policy and the views of science among governments, communities of scientists, and mass media. The ... See full document

... for an ovoid-spheroid: V = 4/3π (L/2) (W/2) 2 , where “L” is the length and “W” the width of a given prey item (Dunham ...obtained an importance index (I x ) through the mean of number, volume, and ... See full document

... The chemical and spectrometric procedures of the U-Pb geochronology method on monazites, recently installed in the LAGIR laboratory, are described in detail. In addition, preliminary results on monazite samples from the ... See full document

... Anthesis lasts approximately four days, starting usually at 5 p.m., but some flowers open at other times of the day. Anther dehiscence occurs already in the pre-anthesis bud; some pollen grains are attached to the ... See full document

... After these were completed, 5 mL of blood was collected from the patient, early in the morning, after an overnight fast of at least 8 hours, and stored in a polypropylene tube protected from light. Then 3 mL of ... See full document

... was an active search for including the highest possible number of smokers in this study aiming at performing genetic ...to an underrepresentation of non- smokers in the ... See full document

... Our results (Table II) indicate that the number of females that were developed through seven instars (19.149%) was much higher than males (6.015%), an aspect still unexplored for representatives of Noctuidae. ... See full document

... Do the poor scientometrics indicators of Brazilian economists necessarily indicate a lack of valid discussions on economics in the country? This seems to be the case in the national universities but very likely other ... See full document

... The theory of transport in porous media such as clays depends on the level of description. On the macroscopic scale, hydrodynamics equations are used. These continuous descriptions are convenient to model the fluid ... See full document

... Similar to Bixa orellana L. (Gomes and Bruno 1992) and Sebastiania commersoniana Braill. & Downs (Santos and Aguiar 2000), C. urucurana seeds germinated better when exposed to an alternating temperature ... See full document

... as an adaptive condition to progressive neuronal loss with age, as greater functional demand is required from these neurons, which could result in a state of cellular ... See full document