Antônio César Ferreira Guimarães

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This paper reports on total Hg concentrations in muscle tissue from 12 fish species collected in the Itacaiúnas and Parauapebas Rivers in the Carajás region, South Pará. It is found that carnivorous species present Hg concentrations higher than herbivorous and omnivorous species. Also, large carnivorous species presented higher Hg concentrations than(More)
This paper presents a nuclear case study, in which a fuzzy inference system (FIS) is used as alternative approach in risk analysis. The main objective of this study is to obtain an understanding of the aging process of an important nuclear power system and how it affects the overall plant safety. This approach uses the concept of a pure fuzzy logic system(More)
Maternal diabetes mellitus (DM) can induce metabolic alterations in both newborn and adult offspring. It is believed that inadequate intrauterine conditions can impair thermogenic capacity of the offspring. The objective of the present study was to evaluate the effects of maternal DM on the offspring thermoregulation. DM was induced by streptozotocin(More)
The blocking effects of streptomycin and neomycin upon adrenal neurotransmission were studied in dogs. The pressor responses to splanchnic nerve stimulation (SNS) or 50 micrograms/kg nicotine were both blocked by 100 mg/kg but not by 50 mg/kg of the antibiotics injected systemically through the femoral vein. The effect was reversed by intravenous infusion(More)
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