Analytical procedures for cadmium determination in facial make-up samples by graphite furnace AAS

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Curcumin pharmacokinetic and pharmacodynamic evidences in streptozotocin-diabetic rats support the antidiabetic activity to be via metabolite(s)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A contribuição do projeto de identidade coorporativa na redução da poluição visual

Among Richard Wagner´s work output one finds the Tetralogy The Ring of the Nibelung, composed of four stories interconnected by the same plot. The theme is mythological and involves dramatis personae taken from the nordic universe. This article examines Erda, one of the protagonists of the story as she is called in the musical drama. This article will consist of a series of pertinent questions posed in order to fully understanding of the character and its role in the plot, the vocal type assigned to it and the co-relation between its Leitmotiv and the musical interweaving created by the composer, besides exploring other themes that bear direct relationship with the same.

Concordância espaço-temporal e intensidade de competição em grupos de baleia jubarte: evidências de uma série temporal de 10 anos

The theory of sexual selection states that individuals more capable of attracting, selecting and competing for partners are more successful on reproduction than the less fit individuals. Competition for sexual partners can be observed in different populations of humpback whales (Megaptera novaeangliae). These large cetaceans migrate seasonally from feeding areas, in high latitudes, to breeding areas, in low latitudes, where they spend the winter. During the breeding season females with and without calves are escorted by transient competitive groups of males. Seeking reproductive success in the same group, various males exhibit aggressive behaviors searching for proximity to the disputed female. Breeding areas are usually located in warm and shallow waters that provide greater security to newborn calves. The Abrolhos Bank, in the Bahia State, is the main breeding area of the species in Brazil. In this study, we used data collected in this region between 2003 and 2012. We tested the hypothesis that there is temporal fluctuation in the abundance of competitive groups and, thus, there is variation in the levels of competition among males during the breeding season. We expected to find higher competition at the beginning of the season since there are a large number of males competing for a small number of females available for mating, because some of them would still be pregnant with calves conceived on the previous year. As the pregnant females give birth to their calves and can again get into heat, the competition among males would be softened, represented by a smaller number of individuals in competitive groups and a larger number of groups sighted. To test this hypothesis we compared the number of individuals per group and number of groups sighted (response variables) between the beginning and the end of the reproductive season (explanatory variable) by using generalized linear models. We used the Living Planet Index (LPI),...