1000 resultados para radicais livres semiquinona
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O presente estudo disserta sobre a criação, a implementação e os impactos da escola a tempo inteiro na gestão dos tempos livres das crianças do Ensino Fundamental em Portugal. Trata-se de uma abordagem qualitativa em que os dados colhidos através das entrevistas realizadas a duas entidades governamentais, às autarquias locais, às Directoras e professores de escolas a tempo inteiro (ETI). Foram também aplicados trinta questionários aos docentes em exercício nas escolas-alvo. A investigação revela que a escola a tempo inteiro foi instituída pelo Governo Português duma Região Autónoma (Ilha da Madeira), com a participação e o envolvimento da comunidade educativa, após ponderados múltiplos factores que afectavam as aprendizagens dos alunos. Esta medida implementada produziu mudanças ao nível da escola, das crianças, das famílias, dos professores e da comunidade educativa. Conclui-se, ainda, a existência de implicações para os professores a nível da empregabilidade, da colaboração e da convivência.
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O estudo do futebol com recurso à análise do jogo tem servido para a compreensão da tendência evolutiva do jogo, para nortear o processo de treino e preparar a competição de forma eficiente. No presente estudo pretende-se detectar padrões comportamentais ocorridos a partir de livres ofensivos. A metodologia observacional, com recurso à análise sequencial com transições, prospectiva e retrospectiva, foi utilizada para a realização do estudo. A amostra foi constituída pelas sequências de jogo referentes aos livres observados em 7 jogos (quartos de final, meias finais e final) do Campeonato Europeu de Futebol 2008. Os resultados obtidos permitiram concluir que: a maioria das faltas sofridas ocorre durante o ataque posicional (57,5%), ataque rápido (35,3%) e nos primeiros 30 minutos de cada parte do jogo (1ªparte- 32,7%; 2ªparte- 24,7%). A análise sequencial prospectiva e retrospectiva permite afirmar ser significativa a probabilidade de: 1) o livre marcado directamente, no corredor central, activar: a) formação da barreira com 3 ou mais defesas, com pelo menos um atacante e uma defesa mista; b)trajectória da bola sem efeito e desmarcação para eventual recarga; c) remate com o pé finalizando em golo ou golo iminente; 2) o livre marcado indirectamente das zonas laterais activar: a) 3 ou mais atacantes na grande área e defesa mista; b) desmarcação do atacante que finaliza, com efeito da bola para o 1º e 2º poste, havendo superioridade e igualdade numérica atacante na zona alvo; c) remate com a cabeça e golo parcial; 3) situações de finalização com perigo ou perigo relativo serem activadas: a) pelo pé ou cabeça nas zonas próximas da baliza, em superioridade ou igualdade numérica atacante na área alvo; b) pela trajectória da bola ao 1º e 2º poste com desmarcação; 4) situações de finalização sem perigo serem activadas na ZLLB e ausência de desmarcação
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Although several studies, have shown differences in cognitive performance between men and women, it not yet known whether these differences occur in tasks involving free association of words (WA). Studies across the sleep-wake cycle (SWC) suggest that rapid eye movement sleep (REM) favors semantic flexibility, in comparison with pre-sleep waking (Pre-WK), slow-wave sleep (SWS) and post-sleep waking (Post-WK). The present work has two aims: (1) to evaluate the semantic distances of word pairs produced by AP, comparing men and women, (2) to evaluate semantic distance in word pairs produced by free association across the SWC in young adults of both sexes. To achieve aim (1), we applied a task of WA in 68 adult volunteers during waking (52 women and 16 men). The WA task consisted of writing the first word that came to mind after viewing another word offered as a stimulus (root Word). To achieve aim (2), we performed polysomnography to identify specific stages of the SWC. The experimental subjects were then awakened (if they were asleep) and were immediately given a WA task. The task was administered to 2 groups of 10 subjects each (G1 and G2). G1 subjects were stimulated with the same set of root words after waking from various states of SWC, while G2 subjects received sets of different root words at each state of the SWC. In the absence of a Portuguese corpus suitable for the measurement of semantic distances, the words collected in our experiments were translated to English, and semantically quantified within a systematic and representative corpus of that language (Wordnet). This procedure removed the polysemies typical of Portuguese, but preserved the semantic macrostructure common to both languages. During waking, we found that semantic distances are significantly lower in WA produced by women, in comparison with the distances observed in men. Through the SWC, there were no statistically significant differences in G1. In G2 women, we detected a significant increase of semantic distances upon being awakened from SWS. In contrast, G2 men showed a significant increase in semantic distances upon being awakened from REM. The results of the first experiment are consistent with the notion that women have a more concrete reasoning than men. The results of the second experiment indicate that men awakened from REM present more flexibility in word association than when being awakened from other states. In contrast, women showed more flexible word association after being awakened from SWS, in compared with other states. The results indicate that the cognitive flexibility attributed to different states of the SWC shows gender dependency
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La tesis problematiza constelaciones creativas de saberes marcados por múltiples subjetividades en un espacio singular de las ciudades: la feria libre. Lugar de cambios financieros, pero también afectivos, simbólicos y míticos, ese espacio se mantiene al lado de los lugares comerciales asépticos y climatizados como son los supermercados e hipermercados de los espacios urbanos y de las metrópolis. Las ferias, por su carácter itinerante y sus personajes nómades modernos, son capaces de suscitar múltiples observaciones, divagaciones, afecciones y construcción de conocimientos. En la feria libre del barrio de Alecrim en la ciudad de Natal-RN/Brasil, principal contexto de referencia de esta investigación, en medio de tantos estímulos movilizadores de los órganos de los sentidos, salta a los ojos el elevado contingente de niños y adolescentes ejerciendo las múltiples actividades laborales. En Brasil el trabajo infantil es encajado en prohibiciones prescritas por leyes que recubren singularidades. Sin la pretensión de negar la importancia de tales convenciones y reglas, las reflexiones aquí puestas ultrapasan las amarras homogeneizantes del discurso oficial instituido de prohibición, problematizando a partir de la feria la idea de una caótica y pulsante aula al aire libre en la cual se construyen saberes más próximos de una lógica del sensible (Claude Lévi-Strauss). La feria es un laboratorio de construcción de conocimientos pertinentes (Edgar Morin), aquellos que religan fenómeno y contexto sin oponer manipulación y tiempo real de aplicabilidad de los saberes construidos. En esa escuela sin paredes, puertas, ventanas, cuadros negros o programas, los saberes de la tradición (Conceição Almeida) son probados y compartidos por niños y adolescentes que viven constantemente con un tipo de cambio de bienes y palabras en permanente construcción. En los puestos de la feria y para más allá de ellos encontramos sujetos híbridos (Bruno Latour) que se estructuran por medio de mecanismos creativos capaces de hacerlos navegar en las incertidumbres caóticas de sus vidas. Los aprendizajes de la feria fueron o son la pulsión de reinvención de esos sujetos aparentemente encarcelados en el conformismo como fatalidad última, portadores de historias embarazadas de simbologías tristes y felices que exponen la cara de un humano en permanente combustión, construcción e incertidumbre
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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The increasing use of shallow seismic methods of high resolution, for investigations of geological problems, environmental or industrial, has impelled the development of techniques, flows and computational algorithms. The practice of applying techniques for processing this data, until recently it wasn t used and the interpretation of the data was made as they were acquired. In order to facilitate and contribute to the improvement of the practices adopted, was developed a free graphical application and open source, called OpenSeismic which is based on free software Seismic Un*x, widely used in the treatment of conventional seismic data used in the exploration of hydrocarbon reservoirs. The data used to validate the initiative were marine seismic data of high resolution, acquired by the laboratory of Geology and Marine Geophysics and Environmental Monitoring - GGEMMA, of the Federal University of Rio Grande do Norte UFRN, for the SISPLAT Project, located at the region of paleo-valley of the Rio Acu. These data were submitted to the processing flow developed by Gomes (2009), using the free software developed in this work, the OpenSeismic, as well other free software, the Seismic Un*x and the commercial software ProMAX, where despite its peculiarities has presented similar results
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A study was carried out, on both sexes, to determine the effects of chlorpropamide (DIABINESE) and glibenclamide (DAONIL) on patients with Type II diabetes using as metabolic parameters the following serum: glucose, amilase, high density lipoprotein cholesterol, free fatty acids. The results indicated that both drugs were potentially similar in relation to glycemia, high density lipoprotein cholesterol, and free fatty acids, in both sexes. Chlorpropamide was significantly more effective in reducing amilase activity in male diabetics than glibenclamide. The above mentioned hypoglycemiants did not reduce glycemia to basic levels in either masculine or feminine groups of diabetics.
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This paper is aiming to evaluate the effects of different levels of the aluminum on the growth of the Eucalyptus grandis x E. urophylla shoots cultivated in vitro. Evaluations were carried out on pH and chemicals modifications of the culture medium by Geochem program, polyamines contents (putrescine, espermidine e espermine) and acid phosphatase ativity on the shoots. The trial had a totally randomized design with four treatments and four replicates. The treatments were: 0.0, 6.75,13.50 and 27 mg.L -1 of AlCl 3.6H 2. Evaluations were carried out on the 4th, 8th, 12th, 16th, 20th, 24th and 28th day of culture. The addition of the aluminium, in all concentrations, affected the culture medium ionic equilibrium, the morphology of the shoots, reduced the pH on the medium, induced an increase in polyamines content and higher acid phosphatase activity.
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This article analyzes the short story Folha rota (1878) by Machado de Assis, taking to account the transformation process of the patriarchy, bearing in mind it's decadence within the increasing urbanization context through 19th century. From the representation of female characters and their everyday's life in the narrative, we discuss the violence experienced by free and poor women involved in the inherent power relations in that society. In this perspective, we intend to indicate an interpretation of literary work as an important device of social criticism, as much as, to give a contribution to an accurate comprehension of Machado de Assis's work, especially his short stories.
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This paper discusses the process of induced elevation in the watertable adjacent to the hydroelectric reservoir after its filling, once the dam is completed and the impoundment of the river begins. It is presented a discussion on the main impacts caused by the installation of such enterprise, focusing on induced elevation, considering how the process of change in groundwater evolves and presenting synthesis of previous studies developed on this.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)