999 resultados para Espaço derivado


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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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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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

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Pós-graduação em Psicologia do Desenvolvimento e Aprendizagem - FC

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Psicologia - FCLAS

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Pós-graduação em Psicologia - FCLAS

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A edição 2013 do Panorama da inserção internacional da América Latina e Caribe, intitulado “Lenta pós-crise, meganegociações comerciais e cadeias de valor: o espaço de ação regional”, se divide em três capítulos. O primeiro capítulo revisa os principais traços da persistente debilidade que mostram a economia e o comércio mundial. Em seguida, se examina a evolução e as perspectivas do comércio mundial e regional. No segundo capítulo faz-se um exame das principais transformações da organização da produção e do comércio mundial associadas ao fenômeno das redes internacionais de produção, que estão na raiz das atuais negociações megarregionais. À continuação se revisam três processos de particular importância: o Acordo Transatlântico sobre Comércio e Investimento entre os Estados Unidos e a União Europeia; o Acordo de Associação Transpacífico, que inclui 12 países de América Latina, América do Norte, Ásia e Oceania; e a Associação Econômica Integral Regional, que reúne dez países membros da Associação de Nações do Sudeste Asiático (ASEAN), Austrália, China, Índia, Japão, Nova Zelândia e República da Coreia. O capítulo III analisa a participação dos países da América Latina e do Caribe em redes internacionais de produção e cadeias de valor.

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This text assumes for present and understand how the books are arranged in different physical spaces, inside the classroom, and how are they perceived by teachers and students, by regulating actions and performances of the subjects. To this end, a field research, from the collection of different images of the school environments in which the books are exposed. The analysis of the images if the theoretical concepts behind about space to articulate the idea of Rodriguez, school culture, the perception of Vidal and school material culture of Viñao Frago and Escolano Benito. Upon reflection, in the design of materiality of the book and, according to Chartier. The observations of the images indicate actions of spreading a school environment of interaction with the book, characterized now by the mobility of physical space, now determined by the need for visibility and demarcation of a normal space, in order to prioritize access to the books and the taming of the reader.

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Phosphate fertilizers are critical for crop production in tropical soils, which are known for having high phosphate-fixing capacity and aluminium saturation, as well as low pH and calcium contents. Fluorine is a component of many phosphate rocks used to make phosphate fertilizers, via a process that generates hexafluorosilicic acid (H2SiF6). While many treatment technologies have been proposed for removal of fluorine in industrial facilities, little attention has been given to a process of neutralizing H2SiF6 with calcium oxide aiming to find out an alternative and sustainable use of a by-product with a great potential for beneficial use in tropical agriculture. This study evaluated the effect of a by-product of phosphoric acid production (fluorite with silicon oxide, hereafter called AgroSiCa) in levels of phosphorus (P), calcium (Ca), silicon (Si), aluminum (Al) and fluorine (F) and some others parameters in soils as on growth of soybean and corn. Experiments were conducted in a greenhouse condition at the Federal University of Lavras (UFLA), Lavras, Minas Gerais, using different types of soils in tropical regions and different doses of AgroSiCa. The application of AgroSiCa resulted in a slight increase in soil pH and significant increases in calcium, phosphorus and silicon in the soil solution and the shoots of corn and soybeans. We also found very low levels of fluoride in all soil leachates. A significant reduction of labile aluminum levels found in all soils after the cultivation of corn and soybeans. In sum, AgroSiCa improved soil properties and contributed to better growth of both cultures. In sum, AgroSiCa improved soil properties and contributed to a better growth of both crops. Our results show that reacting H2SiF6 derived from the wet-process phosphoric acid production with calcium oxide leads to a by-product with potential for agricultural use, especially when applied in highly-weathered soils. Besides providing calcium and silicon to plants, the use of such by-product in soils with high phosphate-fixing capacity and high aluminium saturation delivers additional benefits, since fluoride and silicon can play an important role in improving soil conditions due to the formation of less plant-toxic forms of aluminium, as well as upon decreasing phosphate fixation, thus improving root development and making fertilizer-derived phosphate more available for plant growth.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Serviço Social - FCHS