339 resultados para Língua eletrónica


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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Linguística e Língua Portuguesa - FCLAR

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A remoção da smear layer é um procedimento importante para a regeneração periodontal e para o tratamento da sensibilidade dentinária. Diversos tratamentos tem sido realizados para sua remoção, porém, mostrando resultados conflitantes ou insatisfatórios. No presente estudo nos propomos a analisar através do microscópio eletrônico de varredura a eficiência dos detergentes: lauril sulfato de sódio, Plax e de mamona assim como o EDTA 24% na remoção da smear layer. Todos os produtos testados foram aplicados com bolinha de algodão, renovada a cada 30 segundos, a qual era esfregada na superfície radicular por diferentes períodos. As fotomicrografias foram analisadas através da aplicação de um índice de remoção da smear layer por três examinadores calibrados e os resultados analisados estatisticamente. De acordo com nossos resultados pudemos chegar as seguintes conclusões: 1- a instrumentação com curetas de Gracey provocou a formação da smear layer; 2- o detergente lauril sulfato de sódio não removeu a smear layer, tendo sido o pior resultado entre os detergentes testados; 3- Os detergentes Plax e de mamona mostraram resultados semelhantes entre si e superiores ao controle negativo e ao lauril sulfato de sódio, porém, não removeram a smear layer satisfatoriamente; 4- O EDTA 24% neutro mostrou ser eficiente para a remoção da smear layer.

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Diuron (3-(3,4-Dichlorophenyl)-1,1-dimethylurea) is a substituted urea herbicide widely used on agricultural crops such as soy, cotton and sugar cane. In a previous long-term study this herbicide exerted carcinogenic activity on the urinary bladder and renal pelvis mucosa of Wistar rats and breast of mice. Also, it was shown to be carcinogenic to the mice skin in a initiation-promotion assay. In 1997, the northamerican EPA evaluated Diuron as a “known/likely” carcinogen for humans (USEPA, 2004). In a previous study developed at this laboratory, male Wistar rats treated with Diuron 2500 ppm during 20 weeks presented increased indices of cell proliferation and incidences of simple urothelial hyperplasia (HS) in the urinary bladder. Under scanning electron microscopy (SEM) severe urothelial necrosis and hyperplasia were observed. However, in that study the urinary bladders of animals exposed to lower doses of Diuron were not examined under SEM. Therefore, the possible dose-response influence of Diuron on the urothelium under SEM is not known. The present study aimed to analyze under SEM the urinary bladder of male Wistar rats exposed to 125 ppm, 500 ppm and 2500 ppm doses of Diuron through diet during 20 weeks and to compare to the previous histological findings in the same material. Under SEM, 125 ppm and 2500 ppm groups presented significantly (p<0,05) increased incidences of simple hyperplasia, i.e., 7/10 and 8/10 respectively, compared to control group and the 500 ppm group The sensitivity of SEM was higher since it detected a 45% incidence of hyperplasiaswhile the histological analysis found only 27%. Considering SEM as the gold-standard, histology showed a 44% sensitivity, 86.4% specificity, a positive predictive value of 72,7% and negative predictive value of 65,5% and accuracy of 67,5%. Scanning Electron Microscopy...(Complete abstract click electronic access below)

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In our experiments, we studied the classical dynamic of a particle in vertical motion subject to a constant gravitational field and the partial shock with an elastic wall with oscillatory motion located below the particle. The motion of the particle was confined to the vertical direction by a glass guide tube, which was initially evacuated, allowing viscous drag forces to be disregarded. The time between impacts, as well as the time between the reference phase of the movement of the base and the moment of impact and the period of oscillation of the base will be acquired by a hardware and software to obtain the phases space to be compared later with the description of the system through mapping discrete variables via the 'particle velocity immediately after shock 'and' phase of the movement of the base at the instant of shock 'obtained by computer simulation. This requires developing an electronic analog system followed by Digital implemented in reconfigurable logic, more specifically a sequential machine able to discriminate the impact with the metal base from the impacts of the glass guide tube, based on the frequency spectrum of the response of the microphone to these different impacts

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This paper was developed through literacy events (Barton, 2000) about English language, understood as a social practice of writing and reading. The subjects involved in this research were women, between forty and seventy years old, students of a Young and Adult Education Project (PEJA) that occurs at UNESP/Rio Claro, whose are looking forward to conclude basic school. We intended to see in their speeches reflections about the English language presence in our society and how they deal with this foreign language. Thus, we optimize this contact exposing those women to daily situations where English language was present. To foment dialog and ideas discussions, we brought to the classes common elements, materials such as street advertisements photos with words in English. We noticed that most students recognize the constant English presence and, even they never had formal English education, they were able to establish relations between the uses of English words in everyday Portuguese at most different spheres of life. And, at many times, foreign word comprehension is related to English words use instead of a native one leading to an English naturalization process in the Brazilians speeches world.

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This study aimed to gather information about the social and linguistic reality of students 1. years of elementary school and community that came, in order to identify aspects of their lexical phonological levels, morphological and morphosyntactic and thus identify and describe the alternative variants of non-standard rule. The methodology chosen was that of variational sociolinguistics addressing quantitative and qualitative aspects in the treatment of the data collected through participant observation and audio recordings of speeches of the students. The results indicate that the level of phonological variants are the most frequent in the speech of students. Because the literacy phase, how the student speaks serves you a guide to the act of writing, so it is necessary to work with the students the difference between oral and written form and monitoring of these two modes according to the context of the discourse

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Le présent travail intitulé « Réflexions sur l’enseignement de la langue portugaise aux étrangers et sur l’enseignement de la langue portugaise aux natifs », a eu pour objectif d’enquêter sur les consensus et les désacords dans l’enseignement de la langue portugaise aux differents interlocuteurs. Des lectures préalables sur des textes de difusion scientifique qui ont pour but de divulguer des expériences sur l’enseignement du portugais aux étangers ont révélé l’importance atribuée à la connaisance de la culture quand il s’agit d’enseigner une langue donnée à de tels interlocuteurs. La connaissance de la culture est très importante dans ce cas de figure car il s’agit d’une conception plus ample : celle de l’interculturalisme. C’est pourquoi, nous faisons des lectures préalables dont la méthodologie proposée pour l’enseignement de la langue portugaise aux étrangers s’organise d’une telle façon que l’interlocuteur se trouve immergé dans la culture locale. Néanmoins, quand il s’agit de réfléchir à l’enseignement de la langue portugaise dédié aux natifs et basé sur les propositions curriculaires de la langue portugaise au collège et au lycée, datés de 1993 e 1998, qui constituent des textes de vulgarisation scientifique, on peut constater la préoccupation à réfléchir sur les conceptions de langage, langue, discours, texte et grammaire, des connaissances considérées comme importantes à la proposition de methodologies de l’enseignement de la langue portugaise dans le contexte très formel de l’enseignement scolaire. Le principal objectif de ce travail a consisté à analyser l’importance de la culture dans l’enseignement de la langue portugaise aux étrangers et natifs, le rapport entre culture, language, langue, discours, texte et grammaire dans l’enseignement du portugais aux étrangers et du portugais aux natifs, ainsi qu’à identifier le poids ...

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Nowadays the accelerated development arising from globalization and the interrelation of the nations, the great increase in communication between different countries and the necessity for knowledge in different linguistic structures, the interest in learning a foreign language is crescent, and thinking about it, this work has the scope to verify how young and adult learners of a foreign language, in this case English, behave, that is, how best to develop the four language skills of the language: listening, writing, speaking, and reading and how the use of recreational and educational games can help this dichotomy between teaching-learning. The present research, theoretical and analytical basis, aims to make a study on how fun games can influence the teaching and learning of English in an audience of young and adult people and that includes a study of how human history has evolved, more precisely, as history of education was influenced by the playful and how the human mind also becomes over time. Nowadays, the playful is a tool that has been widely used pedagogically in teaching foreign languages and every day opens new manners and ways of teaching languages, always with its array of spaced more possibilities. Under this assumption, the focus of this research is discover how the use of recreational and educational games may influence grammar greater understanding and language development of young and adults students in learning English, and also what better way to introduce these games, that is, a contextualized content being discussed each time during the school way, so that the games may be, of course, used for relaxation of the students, but also (and especially) for their intellectual growth and language development