Análise da produtividade e rentabilidade de lavouras cafeeiras agroquímica e orgânica na região da Alta Paulista

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Epidemiologia, lesão inalatória e biomarcadores: relação com prognóstico de adultos queimados internados em uma unidade de referência

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estratégia de planejamento de redes de acesso de alta capilaridade baseada em tecnologia DSL: uma abordagem híbrida empírica e probabilística

A tecnologia DSL- Digital Subscriber Line permitem um acesso universal de banda larga, com redução de custo e tempo de implantação necessários, quando comparadas a outras redes de acesso. DSL pode ser considerada uma rede de banda larga de grande capilaridade, uma vez que utiliza uma combinação de infra-estrutura de telefonia existente e a tecnologia de transmissão. Não obstante, a rede DSL precisa ser amplamente compreendida, de maneira que suas principais vantagens não sejam suplantadas pela ineficiência geral do sistema. Esta tese apresenta uma abordagem baseada em estratégias que possibilitem o planejamento de redes de comunicação que a priori não foram implementadas para suportar fluxos Triple Play (pré-requisito obrigatório diante do perfil atual de usuários da Internet). Será mostrado que, a partir do uso de medidas reais e análises probabilísticas, é possível elaborar o planejamento de redes de comunicação, considerando os parâmetros físicos e lógicos, tais como: o caminho de transmissão, a influência do ruído na comunicação, os protocolos utilizados e tráfego de Triple Play (voz, vídeo e dados).

As posições políticas de Jean-Paul Sartre e o Terceiro Mundo (1947-1979)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Despoluição de águas superficiais e efluentes de piscicultura através de sistemas construídos de áreas alagadas (Constructed Wetland)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Argentina’s quarter century experiment with neoliberalism: from dictatorship to depression

Em 2002, a Argentina atingiu um novo marco histórico, ao experimentar o maior default da dívida externa, não somente pela sua própria história, mas também do mundo. Para compreender como a Argentina deixou de ser um país mais desenvolvido de terceiro mundo até experimentar a crise de 2001, entrando depois numa depressão em 2002, com mais da metade da população abaixo da linha de pobreza, precisamos fazer uma avaliação das políticas econômicas durante o último quarto de século na Argentina. A virada ao neoliberalismo começou durante a ditadura no ano 1976, tendo se aprofundado no governo Menem e sempre apoiada pelo FMI. Este trabalho tentará identificar porque a crise ocorreu naquele momento, e também, compreender as mudanças subjacentes na economia política durante duas décadas na Argentina, as quais que desencadearam duas ondas de desindustrialização, uma explosão da dívida externa e uma deterioração bem marcante no padrão de vida para a maioria dos argentinos.

Uso de sistemas construídos de áreas alagadas (Constructed Wetland System - CWS) para tratamento de efluentes

A large proportion of fresh water is greatly impaired due to increasing pollution; this could be minimized through the expansion of investment in sanitation programs. But the major problem faced by third world countries and developing ones in this respect, is the high cost of projects and their implementation. In an attempt to find a simple technology, efficient and inexpensive, this study aimed to verify the effectiveness of using constructed wetland systems (CWS) for removal of bacteria and nutrients from sanitary sewer effluent from the STS Piracicamirim - Piracicaba - SP. The installation of prototypes was followed, and testing prior to regularize the flow held, but due to malfunction of these and outages of the STS activity can not evaluate the effectiveness of both as to the parameters proposed: temperature, pH, dissolved oxygen, conductivity, total dissolved solids (TDS), nitrite, nitrate, ammonia, total nitrogen, total phosphorus, chemical oxygen demand (COD), sulfide, sulfate, biochemical oxygen demand (BOD), total coliform and Escherichia coli. To establish results about the effectiveness of these types if the system were conducted literature reviews of papers published with the same theme. Analysis of these results showed fairly good efficiencies in wastewater treatment, especially for nutrients and coliforms

Dos limites do crescimento econômico ao crescimento sustentável: a proposta do decrescimento e seus desafios

This study aims to assess the evolution of the environmental debate, starting by the contextualization of its first appearance, and perform a theoretical and methodological analysis of its ramifications, especially regarding the two main lines of thought in economics: environmental economics and ecological economics. Once confirmed the incompatibility of economic growth per se with the environmental limits, the degrowth proposal will be presented, its theoretical basis and especially the means by which its creators aim to promote a economic, politic and social restructuring. Finally, the challenges regarding the degrowth implementation on both the developed Northern economies and the third-world or emerging Southern countries will be exposed

Os rumos do desenvolvimento nos anos 50: as visões da Cepal e de Roberto Campos Araraquara – SP 2012

In the decade of 1950, the economic policies almost in their entirety, are aimed at promoting domestic industry, culminating finally in the most consistent action planned in favor of industrialization in the economic history of Brazil: the Plano de Metas (Goal’s Plan). This study aims to analyze the Brazilian planning at this moment studying the proposals in the economic thought of the Economic Commission for Latin America and the Caribbean (ECLAC) and Roberto de Oliveira Campos, divergent, but both connected to important reports of the Brazilian economy developed in the period, which served as the basis for policies at the period and even Goal’s Plan, and with enormous influence on the decisions of the 50s. The first one was the most important school of thought in the Third World. Campos was one of the most important thinkers of the economy in the period, one of the most consistent critics of ECLAC, and their proposals were very close to what was actually executed. The paper concludes that, despite the importance of ECLAC thought, this encountered difficulties applying workable solutions to economic growth. The eclectic tone of Roberto Campos brought clarity to his proposals, and these, when applied, have led to growth

Experiências Comparadas na Educação do Campo entre Brasil e Cuba e as Possibilidades de Formação Omnilateral na América Latina

This text aims to present the challenges and opportunities of omnilateral formation in Latin America as elaborated in Villela (2009-2010). This work has the horizon systematize the educational practices of the “Third World “, i.e. originating from the educational experience of Latin America, Africa and Asia. In the struggle for emancipation, these countries have built and are building unique educational practices. In this sense, we start questioning the historical and theoretical topic, omnilateral formation, and deployment, we discuss the Latin American school and omnilateral formation. We question specifically issues relating to intellectual and educational organization working in the “field schools” in Cuba (1960-1975). The issue of “intellectual and organizational culture”, in a Gramscian perspective (Gramsci, 2000), was addressed in several papers throughout our academic career (Villela, 2003, 2008, 2009-2010). In order to further these issues, we address the challenges of formation for children and rural youth in Latin America. By analyzing the educational practices in the education field, emerges the theme of contemporary global justice.

Práticas Educativas Comparadas em Educação do Campo e os Desafios da Formação Omnilateral na América Latina

This text aims to present the challenges and opportunities of omnilateral formation in Latin America as elaborated in Villela (2009-2010). This work has the horizon systematize the educational practices of the "Third World ", i.e. originating from the educational experience of Latin America, Africa and Asia. In the struggle for emancipation, these countries have built and are building unique educational practices. In this sense, we start questioning the historical and theoretical topic, omnilateral formation, and deployment, we discuss the Latin American school and omnilateral formation. We question specifically issues relating to “intellectuals and the organization of culture” in "schools in the countryside" in Cuba (1960- 1975). The issue of "intellectuals and the organization of culture", in a gramscian perspective (GRAMSCI, 2000), was addressed in several works throughout our academic career (VILLELA, 2003; 2008; 2009-2010). In order to further these issues, we address the challenges of formation for children and youth of the field in Latin America. By analyzing the educational practices in the schools in the countryside, emerges the theme of contemporary global justice.

Chronic motor neuron disease possibly related to intoxication with organochlorine insecticides

We report on two patients with a history of chronic exposure to organochlorine insecticides who developed clinical and electromyographic signs and symptoms of chronic motor neuron disease. Measurements of aldrin, lindane and heptachlor confirmed the intoxication. We emphasize the importance of searching for toxic and environmental factors in cases of motor neuron disease especially in Third World countries, where workers usually wear no adequate protective equipment.

Análise matemática e estatística da produtividade de lavouras cafeeiras agroquímica e orgânica na região da alta paulista

Studies with organic systems have shown the feasibility and ecological and social sustainability of these agroecosystems, unlike the systems agrochemicals (conventional) production. Some studies have concluded that for the model agrochemical exists less interaction between the flow of internal energy, basically the crop receives all inputs to production with no increase in "energy quality" within the system, while in the organic model of production has increased interaction between different resources in the system. The current economic and ecological crisis, exposed no sustainability of the production pattern of industrialized agriculture developed in a way, showing the dependence of developed countries on imports of agricultural commodities produced in the third world, among there coffee. Given these facts, developed a survey to identify problems in the Alta Paulista region, west of São Paulo State, in relation to coffee production systems. Actually, the fundamental problem, according to the research, farmers in this region, is to choose a viable production system correctly (environmental, social and economic); agrochemical or organic. The objectives of this study were to analyze the yield of production systems and agro-chemical and organic coffee in the period from 2003 to 2007, in 30 producing properties, located in this region, in order to point the production system to produce the highest yield. According to the methodology of CONAB, data collected were recorded on spreadsheets to be used as variables in statistical analysis models and mathematics. We performed a descriptive analysis of productivity data and were used for statistical analysis tests for parametric and nonparametric analysis of variance. The mathematical analyses of the curves were prepared with Origin for Windows 6.0 software, which uses numerical methods to fit the data supplied to a function of variable parameters. Unlike conventional systems of production, the organic system showed greater viability of the production model. Furthermore, with the quantitative modeling proposal, it is possible to perform the evaluation of these types of investments, providing more security to the farmer at the time of decision.

In vitro evaluation, in vivo quantification, and microbial diversity studies of nutritional strategies for reducing enteric methane production

The main objective of the present work was to study nutritive strategies for lessening the CH4 formation associated to ruminant tropical diets. In vitro gas production technique was used for evaluating the effect of tannin-rich plants, essential oils, and biodiesel co-products on CH4 formation in three individual studies and a small chamber system to measure CH4 released by sheep for in vivo studies was developed. Microbial rumen population diversity from in vitro assays was studied using qPCR. In vitro studies with tanniniferous plants, herbal plant essential oils derived from thyme, fennel, ginger, black seed, and Eucalyptus oil (EuO) added to the basal diet and cakes of oleaginous plants (cotton, palm, castor plant, turnip, and lupine), which were included in the basal diet to replace soybean meal, presented significant differences regarding fermentation gas production and CH4 formation. In vivo assays were performed according to the results of the in vitro assays. , when supplemented to a basal diet (Tifton-85 hay sp, corn grain, soybean meal, cotton seed meal, and mineral mixture) fed to adult Santa Ines sheep reduced enteric CH4 emission but the supplementation of the basal diet with EuO did not affect ( > 0.05) methane released. Regarding the microbial studies of rumen population diversity using qPCR with DNA samples collected from the in vitro trials, the results showed shifts in microbial communities of the tannin-rich plants in relation to control plant. This research demonstrated that tannin-rich , essential oil from eucalyptus, and biodiesel co-products either in vitro or in vivo assays showed potential to mitigate CH4 emission in ruminants. The microbial community study suggested that the reduction in CH4 production may be attributed to a decrease in fermentable substrate rather than to a direct effect on methanogenesis.

Comparative in vitro evaluation of forage legumes (prosopis, acacia, atriplex, and leucaena) on ruminal fermentation and methanogenesis

Two experiments in vitro were conducted to evaluate four Egyptian forage legume browses, i.e., leaves of prosopis (Prosopis juliflora), acacia (Acacia saligna), atriplex (A triplex halimus), and leucaena (Leucaena leucocephala), in comparison with Tifton (Cynodon sp.) grass hay for their gas production, methanogenic potential, and ruminal fermentation using a semi-automatic system for gas production (first experiment) and for ruminal and post ruminal protein degradability (second experiment). Acacia and leucaena showed pronounced methane inhibition compared with Tifton, while prosopis and leucaena decreased the acetate:propionate ratio (P<0.01). Acacia and leucaena presented a lower (P<0.01) ruminal NH3-N concentration associated with the decreasing (P<0.01) ruminal protein degradability. Leucaena, however, showed higher (P<0.01) intestinal protein digestibility than acacia. This study suggests that the potential methanogenic properties of leguminous browses may be related not only to tannin content, but also to other factors.