212 resultados para Reflectância difusa


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This paper analyzed and mapped social networks among cassava farmers in São Paulo, gathered in search of information regarding production and marketing. A descriptive research, using semi-structured questionnaires, in Tupa and Assis regions, was conducted. UCINET software assisted the analysis of interactions within networks. The results indicate that Tupa network is diffuse and there is little interaction with technology transfer institutions. In Assis, the network is cohesive with greater technological diffusion.

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Pós-graduação em Serviço Social - FCHS

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Pós-graduação em Artes - IA

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Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

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Pós-graduação em Matemática em Rede Nacional - IBILCE

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Cintra stream is the major receiver of treated effluent from sanitary, hospital and research laboratory sewage from the UNESP campus in Botucatu, Rubião Júnior District, São Paulo state; and it has shown evidence of diffuse contamination by metals along it. Analyses of the most toxic metals (Pb, Cu, Fe, Ni and Zn) were carried out by using an atomic absorption spectrometer AA-6.800 - Perkin Elmer, analyst 700. ANOVA followed by the Tukey test were used for data analyses at 5% significance level. The main objective of this study was to compare current data on metal levels with data from other studies, in the same area, and of the same nature, conducted before and after implementation of chemical residue management by the university in 2008. Also, it aimed at identifying and quantifying possible diffuse and punctual contamination. Sites S1 and S2 showed punctual contamination, while diffuse sources were observed between S4 and S5. The quality of water in the Cintra Stream improved after establishment of the program of laboratory chemical residue management in the Campus of UNESP.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)