Minimização da erosão em função do tamanho e localização das áreas de floresta no contexto do programa conservador das águas

Com os crescentes conflitos de uso da água no Brasil, a implantação de políticas para a mitigação desses problemas tornou-se crucial. Nesse sentido, o conceito de Pagamentos por Serviços Ambientais (PSA) tem se difundido ao redor do mundo e, consequentemente, no Brasil. O município de Extrema, em Minas Gerais, implantou a primeira iniciativa municipal brasileira de PSA, conhecida como programa Conservador das Águas. Neste trabalho, objetivou-se avaliar a perda de solo na sub-bacia das Posses, onde se iniciou o programa Conservador das Águas, visando determinar a potencialidade que o conceito adotado nesse programa terá para a conservação do solo e otimizar o provimento desse serviço ambiental em função do tamanho e da localização da área de floresta. Quatorze diferentes cenários de uso e cobertura do solo foram analisados, utilizando-se um Sistema de Informações Geográficas e a Revised Universal Soil Loss Equation. A expectativa de perda de solo na sub-bacia das Posses antes e após a implementação do programa Conservador das Águas foi de 30,63 e 7,06 Mg ha-1 ano-1, respectivamente. A otimização da conservação do solo pode ser feita adotando-se práticas conservacionistas na pastagem e alocando-se a área de floresta de maneira mais otimizada.

Increased Levels of NOTCH1, NF-kappa B, and Other Interconnected Transcription Factors Characterize Primitive Sets of Hematopoietic Stem Cells

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

Clonagem e expressão da glicoproteína transmembrana do retrovírus HTLV-1 em células de mamíferos

The retrovirus HTLV-1 is the etiological agent of the adult T-cell leukemia and HTLV-1 associated myelopathy/tropical spastic paraparesis. The proviral genome has 9,032 base pairs, showing regulatory and structural genes. The env gene encodes for the transmembrane glycoprotein gp 21. The development of methodologies for heterologous protein expression, as well as the acquisition of a cellular line that constituently expresses the recombinant, were the main goals of this work. The DNA fragment that encodes for gp 21 was amplified by nested-PCR and cloned into a pCR2.1-TOPO vector. After which, a sub-cloning was realized using the expressing vector pcDNA3.1+. The transfection of mammalian cells HEK 293 was performed transitorily and permanently. Production of the recombinant gp 21 was confirmed by flux cytometry experiments and the cell line producing protein will be used in immunogenicity assays.

Diferenciação hepatocítica de células-tronco mesenquimais da medula óssea humana

Some recent articles have reported that mesenchymal stem cells (MSCs) can be induced to express hepatocyte markers by transplanting them into animal models of liver damage, or by in vitro culture with growth factors and cytokines. In this study, the aim is to evaluate the behavior of MSCs subjected to induction of hepatocyte differentiation. The MSCs were isolated from the bone marrow of 4 normal donors, characterized and subjected to both in vitro and in vivo induction of hepatocyte differentiation. The in vitro induced cells showed morphological changes, acquiring hepatocyte-like features. However, the immunophenotype of these cells was not modified. The induced cells exhibited no increase in albumin, cytokeratin 18 or cytokeratin 19 transcripts, when analyzed by real-time RT-PCR. The expression of albumin, cytokeratin 18 and alpha fetoprotein was also unchanged, according to immunofluorescence tests. In vivo, the MSC demonstrated a potential to migrate to damaged liver tissue in immunodeficient mice. Taken together, the results suggest that bone marrow MSCs are incapable of in vitro differentiation into hepatocytes by the approach used here, but are capable of homing to damaged hepatic tissue in vivo, suggesting a role for them in the repair of the liver. This contribution to tissue repair could be associated with a paracrine effect exerted by these cells.

Gestión de proyectos de salud electrónica

Incluye bibliografía

Compatibilización de las revisiones séptima, octava y novena de la Clasificación Internacional de Enfermedades: aplicación a Chile, 1960-1985

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Simulação da oferta e demanda de recursos hídricos nas bacias dos rios piracicaba, capivarí e jundiaí: Uma análise em dinâmica de sistemas

A dynamic systems water resources simulation model was developed as a tool to help to analyze water resources management alternatives for the Piracicaba, Capivari and Jundiaí River Water Basins (BH-PCJ). Different politics policy were simulated for 40-year. The model estimates water supply and demand, as well as contamination load from several consumers. Six runs were performed using average precipitation value, changing water supply and demand, and different volumes diverted from BH-PCJ to BH-Alto Tietê For the Business as Usual, the Sustainability Index went from 0.41 in 2010 to 0.22 by 2050; the Water Use Index changed from 80.7% in 2010, to 125.5% by 2050; and the Falkenmark Index changed from 1,302 m 3 person -1 year -1 in 2010 to 774 m 3 P -1 year -1 by 2050. It was noticed that sanitation is one of the biggest concerns in the near future at PCJ River Basin.

Evaluación del uso de las estadísticas vitales para estudios de causas de muerte en América Latina

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Tendencias de la mortalidad femenina adulta a partir de preguntas sobre orfandad materna incluidas en censos y encuestas

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Mortalidad infantil, neonatal y postneonatal en algunos países de América Latina

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Aplicaciones del metodo de Brass para estimar subregistro de nacimientos y defunciones con base en distribuciones por edad de hijos tenidos nacidos vivos y sobrevivientes

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La fecundidad en México (1950-1970) y Venezuela (1950-1961) a partir de información censal

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Mortalidad infantil, neonatal y postneonatal en países seleccionados de América Latina, ¿nuevas tendencias?: algunas cifras y comentarios

Incluye Bibliografía