29 resultados para Press of Cantabria

em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"


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Microbial activity constitutes a good indicator of soil quality, and is influenced by the addition of carbon in the system serving as a substrate for microorganisms that increase their activity and release of CO2, comprising the edaphic respiration of the soil. The objective of this study was to evaluate the microbial activity in different soil types with the addition of cake press of castor bean and cotton textile residue. The study was conducted in a greenhouse at the headquarters of Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Cotton in randomized block design in 4 x 3 factorial arrangement with four replications. At predetermined intervals of 4 days, the containers were opened and the solution of NaOH titrated with HCl 2N in the presence of acid/base indicator phenolphthalein. After reading, the same amount of NaOH was added and the containers were closed again. The difference between the amounts of acid needed to neutralize the sodium hydroxide in a control container and the treatments was equivalent to the amount of carbon dioxide produced by soil microorganisms. It was found that the residues influenced the microbial activity in different soil types, especially in the initial determinations, presenting themselves as good sources for mineralization and nutrient supply, the castor bean proportionating higher cumulative release of CO2 by microorganisms.

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The goal of this research was to determine the density distribution in medium density fiberboard (MDF), manufactured with polyurethane derived from castor oil using, ultrasonic wave technique. The equipment used in this test is Steinkamp BP7 with plan and exponential transducers, both with 45 kHz frequencies, located in several zones on the plate in order to determine wave ultrasonic velocity. The Pinus caribaea and Eucalyptus grandis fiberboard were manufactured in the quality control and products development laboratory of Duratex with 500 mm long, 500 mm large, 8 and 15 mm of thickness. Three MDF for each fiber specimen and thickness were fabricated, totalizing twelve plates tested. The MDF were produced with 5% polyurethane addition, in temperature of 160°C, tension press of 53 bars and addition of moisture content of 12%. For determination of fiberboard density, samples were extracted from the same zones where the wave ultrasonic velocity was determined. In this case, DAX-Ray equipment was used. Statistical analysis shows good agreement with wave ultrasonic velocity and the density profile, validating the application of non-destructive technique in order to determine the density profile of MDF's.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em História - FCLAS

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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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Pós-graduação em Letras - FCLAS

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

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Este artigo refere-se a utilização da imprensa alternativa da contracultura como importante fonte para a construção histórica, seus alcances e desafios.

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Posto à venda em Portugal, em fevereiro de 1878, o romance O Primo Basílio, de Eça de Queirós, não demorou muito para chegar às livrarias do Rio de Janeiro. O sucesso quase instantâneo da obra despertou a reação dos meios intelectuais brasileiros, em particular dos críticos literários, divididos entre a acusação e a defesa da obra quanto à moralidade. A recepção do livro de Eça também repercutiu na imprensa brasileira de caricaturas da época, embora aqui, em lugar das charges, tenha prevalecido a sátira verbal, na forma das piadas, poemas e pequenas histórias picantes, sob o influxo da crítica literária, questão discutida no presente artigo.

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Pós-graduação em Letras - FCLAS

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