998 resultados para Vieira, Antonio 1608-1697


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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Este artigo enfoca aspectos da obra ficcional de Wilcon Jóia Pereira, na qual Uilcon Pereira se projeta nos inúmeros desdobramentos da personagem Biúte.Torna-se pois impossível separar o ficcionista do filósofo, já que sua escritura, urdida a partir de procedimentos comuns à ácção e à Filosofia - ironia, paródia, sátira - revela-se enquanto escritura-artista. Fica também evidente na obra a filiação do autor à tradição niilista enca-beçada por Flaubert e Machado. A problemática do Nada emerge pois através de uma policacofonia em que diferentes vozes, anulando os posicionamentos ideológicos até as fronteiras do ilegível, fazem da obra de Wilcon um texto vinculado às marcas da voz autoral.Palavras-chave: Niilismo; intersemiose; intertextualidade; ironia; paródia; sátira; voz autoral.

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O texto examina a elaboração artística do 'pretoguês' - forma pejorativa com que oscolonizadores portugueses denominavam a linguagem híbrida português/quimbundo utilizada pela população angolana - na obra do escritor angolano José Luandino Vieira.

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Este artigo objetiva, a partir de estudos de Antonio Candido voltados para a poesia lírica fin-de-siècle, brasileira e francesa, rastrear o modo pelo qual o autor articula Simbolismo e Modernismo. Tal veio do pensamento estético e crítico-teórico de Candido (com a respectiva prática analítica de textos poéticos) não foi tão valorizado quanto os eixos “árcade/romântico” e “modernista” que fundamentam sua vasta obra. No entanto, revela-se da maior importância na medida em que confi gura um “eixo intermediário” propício a uma nova apreciação do Simbolismo no Brasil.

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Este texto aborda a presença da literatura russa na biblioteca pessoal do escritor João Antônio. As marginálias localizadas nas obras dos autores russos permitem verificar aspectos da leitura desta vertente artística realizada pelo escritor brasileiro entre as quais se destacam observações manuscritas de orientação formal, listas de palavras e sublinhas. Outro aspecto importante dos livros de escritores russos que compõem a biblioteca do Acervo João Antônio circunscreve-se à condição de depositária de edições raras que representam uma parte da memória editorial brasileira. Em acréscimo, apresentam-se considerações sobre algumas das marginálias presentes em contos de Tchekhov e Máximo Górki.

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Cerâmicas nanoestruturadas à base do óxido niobato de estrôncio e potássio com inserção de lons cobre e Processo otimizado de fabricação de cerâmicas nanoestruturadas à base do óxido niobato de estrôncio e potássio com inserção de lons cobre via sinterização aditivada com óxido de cobre", a presente invenção descreve uma classe de materiais compósitos cerâmicos ferroelétricos nanoestruturados à base do óxido niobato de estrôncio e potássio obtidos via sinterização aditivada com óxido de cobre II (CuO). Os materiais compósitos cerâmicos KSN - CuO são sinterizados entre 960 <198>C a 1250 <198>C, a composição do aditivo de sinterização (CuO) está entre 0,5 a 2,0 % (percentagem em massa).

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A invenção descreve uma classe de materiais compósitos cerâmicos ferroelétricos nanoestruturados à base do óxido niobato de estróncio e potássio obtidos via sinterização aditivada com óxidos de cobre (CuO/Cu~ 2~O), preferencialmente o óxido de cobre II, e óxido de boro (B~ 2~O~ 3~). Os materiais compósitos cerâmicos KSN - CuO:B~ 2~O~ 3~ são sinterizados entre 960<198>C a 1250<198>C, diversas razões em massa CuO:B~ 2~O~ 3~ (1:1, 1:2, e 1:4) são utilizadas como aditivos de sinterização.

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Esta obra reúne trabalhos de pesquisadores de três universidades públicas brasileiras apresentados durante o I Colóquio de Pesquisas do Núcleo de Estudos Agrários da Unesp de Rio Claro, realizado em outubro de 2010. Organizada por Darlene Aparecida de Oliveira Ferreira, Enéas Rente Ferreira e Adriano Corrêa Maia, pretende compreender a realidade agrária brasileira contemporânea a partir de suas principais características, considerando o passado e o presente. A obra mostra que a diversidade espacial é umas das marcas importantes do sistema, com o mundo rural organizado distintamente em contextos regionais e atrelando culturas a áreas específicas. Por isso, os trabalhos tratam também de contextos espaciais historicamente construídos, dos quais emergem novos atores sociais ou se consolidam os detentores de estruturas passadas. As pesquisas identificam principalmente as características e as tendências da geografia agrária no Brasil do início do século XXI, os processos, como produção e migração, os usos modernos do espaço agrícola (como o turismo rural) e o papel atual das pequenas propriedades na agricultura brasileira.

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The aim of this study was to estimate the genetic parameters on a progeny test of Enterolobium contortisiliquum, located at the Fazenda Experimental de Luíz Antônio (IF-SP), São Paulo State, Brazil, for genetic selection and seed production. The coefficients of genetic variation and heritability, as well as the genetic and phenotypic correlations for the silvicultural traits diameter at breast height (DBH) and total height of plants at the age of 19, 20, and 21 years and bifurcation (BIF) and stem straightness (RET), at the age of 19 years were estimated. The F test of analysis of variance detected significant variation among the progeny for the traits DBH, height in the three tested ages, and straightness of the trunk, which indicates that the tested population can be improved by selection among progenies. The estimation of heritability at the level of progeny (h²m, minimum of 0.50) for all traits was high and at the levels of individual plants (h²i, minimum 0.18) and within progenies (h²d, minimum of 0.14) was medium, indicating that the population can be improved by selection among and within progenies. Significant high genetic and phenotypic correlations among pairwise growth traits of the same age were detected as well as among those with different ages. Therefore, the direct selection, of a trait allows indirect selection of another. The results showed the potential of this progeny test to enhance a seed orchard by selection and seed production for commercial and environmental reforestation plans.

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This study aimed to assess the incidence of fungi and nematodes in Brachiaria sp. and Panicum maximum seeds produced in the Brazilian states of Mato Grosso do Sul (MS), Mato Grosso (MT), Goiás (GO), Minas Gerais (MG) and São Paulo (SP). The main fungi found in the seeds were Bipolaris sp., Curvularia sp. and Phoma sp.. The lowest incidence of these fungi was found for seeds of Brachiaria brizantha cultivars BRS Piatã and Xaraés, and Brachiaria decumbens cv. Basilisk, from the states of GO, MG and MS, respectively. The cultivars Marandu and BRS Piatã, from several regions, exhibited high occurrence of Aphelenchoides sp. and Ditylenchus sp.. Seeds of B. humidicola cultivar Humidicola, produced in MS and SP, did not show association with nematodes. The seeds of Panicum maximum cv. Massai and cv. Mombaça showed higher incidence of Bipolaris sp., Cladosporium sp., Curvularia sp., Fusarium sp. and Phoma sp., as well as Aphelenchoides sp. and Ditylenchus sp., especially for seeds produced in MT. Some of the detected pathogens are causative agents of diseases of major importance in forage plants, such as Bipolaris sp., causing leaf spot in Panicum, of high severity in Tanzânia, which provides serious compromising of the pasture sustainability.

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Adhesion and colonization of the oral cavity by Candida albicans is an initial step in candidosis. Orthodontic and other oral appliances seem to favor candidal presence. The aim of this work was to compare the presence of Candida species in saliva, their adherence to oral epithelial cells, and the levels of anti-C. albicans IgA in children with or without orthodontic appliances. This study included 30 children 5 to 12 years old (9.1 ± 1.7 years old) who were users of removable orthodontic devices for at least 6 months and 30 control children of similar ages (7.7 ± 1.5 years old). The presence of yeast species in the saliva was evaluated by microbiological methods. Candida species were identified using phenotypic methods. Anti-C. albicans IgA levels in saliva were analyzed by ELISA. The yeasts adhering to oral epithelial cells were assessed by exfoliative cytology. No statistically significant differences were observed for saliva yeast counts and anti-C. albicans IgA levels between the studied groups. Children with orthodontic devices exhibited more yeast cells adhering to oral epithelial cells and a higher percentage of non-albicans species relative to the control group. In conclusion, orthodontic appliances may favor the adherence of Candida to epithelial cells but do not influence the presence of these yeasts in saliva, and the levels of anti-C. albicans IgA do not correlate with yeast adherence or presence of Candida in the oral cavity

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The objective of this work was to evaluate the responses of Haematococcus pluvialis cells to the carotenogenesis induction process, under light and nutrition stress. Cells were acclimated during 15 days in WC medium, with aeration with synthetic, filtered atmospheric air and flow rate of 100 mL min-1, light intensity of 50 µmol photons m-2 s-1, photoperiod of 12 hours, and temperature of 23ºC. The following two treatments were compared: cultivation under the described conditions, but with increase of light intensity up to 350 µmol photons m-2 s-1 ; and cultivation under the same conditions as the previous treatment, but with aeration containing 4% CO2. The treatments were done in triplicate, during ten days. With the addition of CO2 and the increment in lighting, an increase was observed in the carotenoids/chlorophyll ratio and cell biomass. Cells stopped dividing on the second day of stress, when nitrate became limiting, and significantly increased their biovolume. The excretion of organic carbon and the concentration of astaxanthin increase in response to the addition of CO2. Stress by light intensity combined with CO2 addition optimizes carotenogenesis in H. pluvialis and increases astaxanthin production.

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Pós-graduação em Engenharia Elétrica - FEIS

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An experiment employing three hundred and twenty 81-week-old Lohmann LSL commercial-breed hens was conducted to compare alternative induced-molting methods with the conventional method (fasting). Induced molting lasted 28 days at most, production and quality being monitored for four periods of 28 days thereafter. A completely randomized experimental design with five treatments, eight replicates of eight birds each per plot was adopted. The following experimental treatments were applied until a loss of 26% of body weight was reached: T1 - fasting, T2 - wheat bran ad libitum, T3 - rice bran ad libitum, T4 - cracked rice ad libitum, T5 - ground alfalfa ad libitum. Birds were then fed production diet ad libitum, except for those on treatment T1 (fasting) which received 30, 60 and 100 g/bird/day and then feed ad libitum. During induced molting the birds were exposed to a natural photoperiod and at day 28 that period was increased by 30 minutes/week until reaching 16 hours of light/day. The characteristics evaluated during induced molting were: feed intake, body weight changes and laying percentage. In the post-molt period, performance (feed intake, laying percentage, egg weight, egg mass, feed conversion ratio per dozen and per egg mass and percentage of broken eggs) and egg quality (specific gravity, eggshell breaking strength, percentages of eggshell, yolk, and albumen, eggshell thickness, yolk color and Haugh unit) were evaluated. Every 28 days one egg was collected from each repetition for three consecutive days for quality assessment. The use of rice bran and wheat bran is viable as molting inducers since the birds given those treatments display performance and egg quality similar to those fasted during the induced molting and also because these ingredients promote easier handling, eliminates the need for grinding and feed-mixing equipment and, being less aggressive, provide greater bird welfare.