[PDF] Top 20 An. Acad. Bras. Ciênc. - vol.79 número1

... The synthesis of the naphthoxazoles 5 and 6 were accomplished by the addition of 10ml of an eter solu- tion of diazomethane to 1.0mmol of the oximes 3 and 4 at 0 ◦ C. The reactions were maintained in this tempera- ... See full document

... in an environment where the source of danger had previously been met; or when the environment is novel, implicating in potential rewards and threats, generating approach-avoidance ... See full document

... age. An absence of any effect of AA was also found by Zanoni et ...by an increase in the cellular profile, when age related loss takes place (as observed in non-supplemented animals), the return of the mean ... See full document

... Therefore, we consider the shared characteristics to be morphological convergences due to their similar habitat use, and we include the new species putatively in the genus Tmesiphante[r] ... See full document

... This study aimed to detail the temporal and morphological parameters of the immature stages of Spodoptera albula (Walker 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase) and to gather ... See full document

... Among the interesting features of this crest is the presence of several shallow channels (Figs. 3-4). On the right lateral side there is one central channel that runs sub parallel to the ventral border of the skull. ... 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

... Air temperature greatly influences the seed physiological quality and germinative behavior (Daws et al. 2004, 2006, Lamarca et al. 2011). However, for E. pyriformis seeds, the air temperature influence represented by GDD ... See full document

... about the world must be affirmed against other explanations or forms of knowledge while drawing on the social strength of scientists and symbolic effectiveness of their rhetorical strategies. The social position of ... 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

... 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

... The majority of the antibiotics are prescribed for ENT infections with a presumed viral etiology. Acute tonsillitis, where viruses like adenovirus, Epstein-Barr virus or influenza viruses are implicated, is treated ... 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

... Buds in pre-anthesis were arranged facing the inflorescence base while flowers were well open towards their apex. Anthesis was asynchronous in distinct points on the inflorescence circumference and started at 05:00h when ... See full document

... There was a significant effect of storage conditions on the size of the aerial portions of the seedlings, with a reduction in the sizes of these aerial portions being observed among seeds stored at room temperature, and ... See full document

... When Debye length is comparable or larger than the distance between two identical particles, the overlapping among the particles double-layers can play an important role in their interactions. This paper presents ... See full document

... of an H-atom by the constituents of radical pairs A and B, especially from the backbone of the PVAc polymer or from ethyl acetate, can lead to products in which a radical is attached to the polymer or ... See full document

... ene (Takaishi et al. 1997) along with the NOE cross peak between H-17 and H-14 α in the 1 H- 1 H- NOESY spectrum led us to established an equato- rial position for the C-17 methyl group, such as in the ... See full document

... for an electron to surpass the potential barrier and be freed from the metal in vacuum, whereas the ionization potential is defined as the minimum energy necessary to remove an electron from the ... See full document

... of an accompanying pressure gradient, the large, positive electric field would drive electroosmotic flow in the direction of the bulk concentration gradient (from left to ... See full document