159 resultados para Octavio gouvêa de bulhões


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Biological activities of flavonoids have been extensively reviewed in literature. The biochemical profile of afzelin, kaempferitrin, and pterogynoside acting on reactive oxygen species was investigated in this paper. The flavonoids were able to act as scavengers of the superoxide anion, hypochlorous acid and taurine chloramine. Although flavonoids are naturally occurring substances in plants which antioxidant activities have been widely advertised as beneficial, afzelin, kaempferitrin, and pterogynoside were able to promote cytotoxic effect. In red blood cells this toxicity was enhanced, depending on flavonoids concentration, in the presence of hypochlorous acid, but reduced in the presence of 2,20 -azo-bis(2-amidinopropane) free radical. These flavonoids had also promoted the death of neutrophils, which was exacerbated when the oxidative burst was initiated by phorbol miristate acetate. Therefore, despite their well-known scavenging action toward free radicals and oxidants, these compounds could be very harmful to living organisms through their action over erythrocytes and neutrophils.

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

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

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This paper aims at rescuing some critical appraisals found in the high school anthology Autores Contemporâneos (1931), by the critic, philologist and writer João Ribeiro, one of the main Brazilian intellectual representatives of the first decades of the twentieth century. João Ribeiro, along with Coelho Neto and, Laudelino Freire, among others, took part in of the panel which compiled, in 1921, the Dicionário da Academia Brasileira de Letras. Therefore, we find the analytical process João Ribeiro, their theoretical observations, concepts and dilemmas which are appointed by him in literary history and criticism of the early twentieth century.

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This text aims to address the critical essays of Osman Lins on the corpus of his works, reading and study, which consists of Portuguese textbooks adopted in schools for the teaching of the national language in the Secondary Course. More specifically, we intend to reflect on how Osman Lins analyzes the procedures adopted by the authors of these textbooks to introduce learners into Brazilian literature. Our object of study and analysis is restricted to six trials Lins published originally in 1965, the newspaper of Pernambuco University Press and later, in 1977, were collected in the form of the first chapter, titled "The Book didactic - First time: 1965 " (1977, p.13-40), the book From the Dream and Glory: Brazilian uncultural problems.

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This text aims to analyze two chronicles: Drummond’s “Pelé, the Wizard”, and Campos’s “Mané Garrincha”. These texts, although they have been taken from various works, respectively, When the day is football (2006); and The Goal is needed: chronic sports (2008), both dealing with the same theme: Soccer. Therefore, we seek to raise reciprocal relationships between these two works, always in search of possible thematic-stylistic affinities present in the fiction of both authors. More specifically, we intend to present the two books, then analyze the two chronicles, considering that approach, too, by dazzle that manifest in relation to football and metalinguistic approach by giving the theme.

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This work discusses some of the most representative poems of Uruguayan writer Cristina Peri Rossi (1941 -), compiled in the book Poesía reunida (2005), by analyzing the exploration of recurring themes, like love and eroticism. The proposed analysis will feature the theoretical support of the works of Georges Bataille (1987) and Octavio Paz (1993).

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Estudos Literários - FCLAR

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Objective: To investigate the correlation between the Alberta Program Early CT Score (ASPECTS) and the Scandinavian Stroke Scale (SSS) for the evaluation of neurological impairment in patients with acute stroke. Method: 59 patients with a first acute ischemic stroke were evaluated. The ASPECTS were evaluated by 2 neurologists at admission and by another neurologist after 48 hours. The NIHSS and SSS was applied to determinate stroke severity. Correlations and agreements were analysed statistically by Spearman and Kappa tests. Results: ASPECTS was correlated with National Institute of Health Stroke Scale (NIHSS) at admission (r = -0.52; p < 0.001) and SSS (r = 0.50; p < 0.001). The ASPECTS and SSS items were most correlated with arm (r = 0.52; p < 0.001) and hand (r = 0.49; p < 0.001) motor power, and speech (r = 0.51; p < 0.001). The SSS of 25.5 shows sensitivity (68%) and specificity (72%) when associated with ASPECTS <= 7. Conclusion: The SSS can predict worst neurological impairment when associated with lower values of ASPECTS.

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

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ESR measurements In pressed pellets of doped Poly(3-Methylthiophene)(P3MT) were performed at 10 K and 50 K after cooling the system slowly from room temperature to 110 K, quenching to 77 K and then to 10 K. ESR line asymmetry (A/B) as a function of microwave power was observed and 9.4 GHz conductivity was obtained from Dyson's theory. The data is discussed in terms of Charge-Density Wave (CDW) depinning. At 50 K the threshold electric field is estimated to be less than 1 V/cm. At 10 K a subtle pinning of the CDW was observed around 15 mW.