845 resultados para REPRESENTACION PROPORCIONAL
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The agricultural use of sewage sludge as organic fertilizer is considered nowadays as on alternative of disposal, in the end of the residue in addition to possible environmental problems, it's using can decrease the mineral fertilizers and avoid provide organic matter to the soil. The objective of this study it was to evaluate the parameters of soil fertility under different managements and doses of sewage sludge after the third application of the residue. The experiment was carried out in São Manuel - SP, with the cultivation of sunflower in two consecutives cycles, followed by wheat and triticale without application of the residual, and in the following year with the application of sewage sludge and cultivated the black oats. It was adopted a randomized complete block design, consisting of six treatments and five repetitions defined as follows: T0 - without fertilization; T1 - mineral fertilizer nitrogen according to crop need, T2 - 50% of N from sewage sludge and 50% in mineral form, T3 - 100% of N from sewage sludge, T4 - 150% of N from sewage sludge, T5 - 200% of N derived from sewage sludge. Soil samples were collected in the end of the trial of oats. There were an increase in the levels of P, H + Al, CEC and OM, B, Cu, Fe, Mn, Zn as a function of increasing dose of sewage sludge. To V% and pH were decreased the values in the proportional soil to the increase of sludge dose until 24 and 22 t ha-1, respectively and after increasing the pH and V%.
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Pós-graduação em Aquicultura - FCAV
Projeto de uma referência de tensão com baixa susceptibilidade a interferência eletromagnética (EMI)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Eletroestimulador funcional de oito canais com malha de realimentação utilizando Controlador Digital
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Pós-graduação em Engenharia Elétrica - FEIS
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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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Las "Notas sobre el Diagrama de Lexis" forman parte del material docente del Curso de Mortalidad I del Programa de Maestria en Demografia y Estudios Sociales de Poblacion de CELADE 1985, y contiene 3 separatas: la descripcion del Diagrama de Lexis; un capitulo sobre representacion en el tiempo del libro Analisis Demografico de Pressat y el tema 1.2 Diagrama de Lexis del libro Tablas de Mortalidad de A. Ortega.
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Pós-graduação em Ciências Biológicas (Biologia Celular e Molecular) - IBRC
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)