993 resultados para Leitores - Reação critica
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Pós-graduação em Letras - FCLAS
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The teaching of Science is one great challenge not only for educators but also for researchers in our country. In a globalized world where the social foundations, cultural and economic depend fundamentally on science and technology, science education is a basic requirement for the exercise of citizenship. Multiple initiatives have been taken to improve the quality of teaching of science practiced in our schools: the ReAction Program is the result of a set of actions developed by a public educational policy that invests in improving the Teaching of Science the elementary school. In this work, we present a history of this program and the search on the contribution and the actions developed, the collaborative research with a group of teachers-multiplier, and the evaluation of the teaching of science, measured from notes, frequency and speech teacher.
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This study concerned the reaction of yellow passion fruit ‘Maguary’ and ‘Afruvec’ to the phytonematode Meloidogyne incognita race 3 in greenhouse conditions. An entirely randomized experimental design with 3 treatments (‘Maguary’, ‘Afruvec’, and tomato cv. ‘Rutgers’) and 4 repetitions was used, each plot consisting of 1 vase containing 1 plant. After 6 months, an evaluation was made of the index of galls and egg mass in the yellow passion fruit varieties and in the tomato cv. ‘Rutgers’. The classification of resistance to the phytonematode was made by criterion of the reproduction factor (RF). ‘Maguary’ presented a zero index of galls and egg mass, while ‘Afruvec’ showed a low index of galls and egg mass in relation to the tomato cv. Rutgers. According to the RF, ‘Maguary’ was characterized as immune to the phytonematode, while ‘Afruvec’ was resistant, and the tomato cv. ‘Rutgers’ was susceptible.
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Pós-graduação em Ciência e Tecnologia de Materiais - FC
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Pós-graduação em Saúde Coletiva - FMB
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The activation of aluminum surface has the most various purposes as for example the search for the surface activation mechanism and the corrosion products by mercury ions. The objective of this work is to study the reactivity of the surface of aluminum metal when activated by mercury ions (Hg2+), with the consequent formation of an Al-Hg amalgam. Results demonstrate that the kinetics of the reaction, by measuring the mass change with time of the corrosion product formed between Al and Hg, and analysis by infrared spectroscopy (IR) that the product of the reaction between the amalgam, located on the surface, and the atmospheric oxygen is Al2O3 (aluminum hydroxide). The results also indicate that the kinetics of the reaction between the amalgam (Hg-Al) and atmospheric oxygen is of first order and reach a region where there is no more formation of product
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Pós-graduação em Medicina Veterinária - FCAV
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Introdução: A hanseníase é doença crônica que pode ter seu curso interrompido por episódios reacionais tipo 1 e 2 ou ENH, sendo que estes podem ser repetitivos, com conseqüentes danos ao paciente.A talidomida é a medicação de eleição para o controle, desde 1965. Objetivo: Evitar repetição de episódios reacionais. Material e Método: Após o controle da reação com dose tradicional, utilizou-se 100mg/d, pelo período de seis meses, com acompanhamento por seis meses após a suspensão. Resultados: Foram avaliados 42 pacientes MB, 39 (92,85%) da forma V e 3(7,15%) da D, que apresentaram ENH, como primeiro episódio ou repetição, 33(78,6%) do sexo masculino e9(21,4%) do feminino. As idades variaram de 18 a 84 anos, predomínio acima de 49 anos.Não se observou repetição em 100% dos pacientes durante o uso dessa dose.Durante a observação clinica, 33(78,6%)continuaram sem apresentar reação e9(21,4%), todos da forma V,a apresentaram, de forma leve,sem sinais e sintomas, controlada com antinflamatórios não hormonais. Não houve efeitos adversos. Conclusões: sugere-se o uso da talidomida, 100mg/ dia, como manutenção, que foi efetiva, impedindo a repetição das reações tipo 2.
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Brucellosis is a zoonosis caused by bacteria of the genus Brucella. Man infection occurs through contact with reproductive secretions as placenta and its lochia, semen and penile secretion of infected animals or by consuming unpasteurized milk and dairy products. With the objective of investigating the presence of bacteria in milk, 30 samples of raw milk sold illegally in the region of Botucatu, São Paulo, Brazil, as well as 50 samples of milk delivered to a dairy industry previously to its pasteurization were evaluated by the polymerase chain reaction (PCR) technique. Of the 80 samples analyzed, 10 samples (12.5%) were positive and 70 (87.5%) were negative. Among the positive samples, 5 (16.6%) were from illegal traders and other 5 (10%) were obtained from the dairy industry. Brucella spp. positivity shows that the pathogen is representatively present in Botucatu, São Paulo, Brazil, and the risk associated to public health due to the commercialization of illegal products without pasteurization is real.
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The identification of Salmonella spp. in food samples by microbiological diagnosis is time consuming, with approximately five different stages, requiring about 120 hours until the final result. The utilization of the polymerase chain reaction technique (PCR) can reduce this time, but substances present in samples may affect the reaction. The present work aimed to compare DNA extraction by thermic treatment and by the use of cetyltrimethil ammonium bromide (CTAB), in products originated from poultry houses corresponding to raw material (meat meal) and experimentally contaminated drag swabs. Materials obtained from the extractions were submitted to PCR, utilizing a pair of initiator oligonucleotides for amplification of Sdf 1 gene fragments. Comparing the methods of extraction, it was observed that when CTAB was employed, SE was detected in 70% of meat meal and in 80% of drag swabs, while the thermic treatment method yielded positive results in 20% of meat meal and in 40% of drag swabs. SE was detected under both methods utilized for DNA extraction, but the use of CTAB detected a greater number of positive samples, compared with thermal treatment.
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A partir da compreensão do curso de licenciatura como momento essencial para a forma-ção do professor como intelectual crítico, o presente estudo teve por objetivo analisar elementos do processo reflexivo de licenciandos em Ciências Biológicas, buscando-se identificar o desenvolvimento do nível crítico de reflexão. Participaram do estudo 25 alunos do último ano de um curso de licen-ciatura em Ciências Biológicas de uma universidade pública. Os dados foram coletados por meio de dois instrumentos escritos e possibilitaram a identificação de conteúdos, de fatores desencadeadores, de implicações e de níveis de reflexão dos alunos e a presença de habilidades e atitudes necessárias ao processo reflexivo.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Educação - FCT
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Estudos Linguísticos - IBILCE