999 resultados para Problemas ambientais urbanos


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O Brasil é reconhecido mundialmente como o maior produtor e exportador de suco de laranja do mundo. O líquor de laranja é um dos principais subprodutos da indústria cítrica, rico em açúcares e destinado, quase que exclusivamente para a produção de ração animal, já que seu descarte certamente causaria problemas ambientais. Com o intuito de ter um melhor aproveitamento deste subproduto, foi desenvolvido um novo tipo de destilado obtido a partir da fermentação do líquor de laranja. Dado o enorme volume de líquor e considerando-se também o enorme volume de fermento de descarte da indústria cervejeira (160 milhões de litros/ano) ainda viável, está sendo objeto de estudo a utilização deste fermento na obtenção da aguardente de líquor de laranja. Nesse sentido, foram obtidas amostras de aguardente de líquor de laranja, utilizando-se de técnicas tradicionais de produção de cachaça, sendo o líquor fermentado de fermento que é descarte da indústria cervejeira. Dessa forma, foram avaliados a viabilidade da levedura de descarte da indústria cervejeira, o teor de sólidos solúveis, o teor de cobre e carbamato de etila na aguardente de líquor de laranja obtida utilizando alambique de aço inoxidável.

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Considerando número expressivo de alunos matriculados nas diferentes etapas e modalidades de ensino no Brasil e o que estabelece a Constituição Federal de 1988, sobre a incumbência do Poder Público de promover a Educação Ambiental em todos os níveis de escolarização, pretendemos analisar, neste artigo, aspectos referentes aos marcos legais e às orientações pedagógicas da Educação Ambiental em nosso país. Tomamos como referência a perspectiva de alguns autores brasileiros que estudam o tema e analisamos as principais diretrizes legais da Educação Ambiental no Brasil e as recomendações dos Parâmetros Curriculares Nacionais referentes a Meio Ambiente. Diante dos sérios problemas ambientais que enfrentamos, acreditamos que a Educação Ambiental pode contribuir para transformações nos indivíduos e na sociedade. Defendemos, também, a importância da pesquisa em Educação Ambiental e consideramos que o conhecimento gerado pela pesquisa pode oferecer subsídios para ações que promovam mudanças capazes de garantir um planeta ambientalmente seguro e saudável.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Microbiologia Agropecuária - FCAV

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

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

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia Mecânica - FEG

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This study was performed in two kindergarten classes of the public network education (Botucatu, São Paulo, Brazil). The major aim of the present work was to realize an environmental mapping with the children, inspired on the research-action-participative methodology, which is guided by the evolved group organization about the search of the problems solutions lived by the group. For that, from the mapping, environmental problems more significant were selected, identified at the school and in the surroundings to realize cooperative actions in this environment as a means to deepen our comprehension about then and also problematize their solutions.

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This article is a reflection about the contribution the social communication media can provide to the public debate about the environmental concerns. The Agenda XXI and several other UN documents call to the need to inform and educate the society. On the other hand, the Communication theories always have in common the imperative of the emitter to be understood by the recipient, in such a way that they can become change agents and not only observers. The first step is, therefore, to study the environmental question, adequately focus the theme and convey clarification. It is not what happened, for instance, with some technical concepts from the area, in particular sustainability, that came about in the 70 s to guide public policies at the service of the life preservation and specially, future and today, utilized even as a parameter of preservation of profit and advantage resulting from exploitation of nature.Key-Words Theory of Communication - Environmental Sustainability MCM

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The use of digesters has become an important alternative for the proper disposal of organic agricultural wastes, serving as a solution to some environmental and health problems. Furthermore, the process of digestion provides commercially valuable by products such as biogas and bio fertilizer. The generation of biogas from agricultural waste, and its use in power generation systems has aroused great interest in rural areas because it enables supply in whole or in large part the energy demand of ownership by reducing production costs. The advent of technology has brought new forms of energy conversion of biogas, as the use of micro turbines specifies to be fuelled with biogas derived from the decomposition of organic matter in digesters, since it has a low level of methane in its composition, and high degree of impurities such as hydrogen sulphide, which are harmful to equipment and reduce the calorific value of biogas. The use of micro turbines behind other advantages like low emissions, great fuel flexibility and low maintenance. This paper presents an analysis of the feasibility of using biogas generated from cattle manure in micro turbines to generate electricity. Behind also an assessment of the energy potential that each animal has on various uses of biogas, and forms of energy recovery from the exhaust gases of the micro turbine. Also conducts an evaluation of the energy savings that the use of biogas aggregates properties.

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The present article is an investigation / action regarding the working conditions for pickers of recyclable waste in a medium-sized city in the state of São Paulo, mainly on the health / illness process, problems related to social security and conditions of autonomy and citizenship. We use the constructs of social psychology as theoretical. The recycling of urban garbage, as the literature indicates, is not being treated as just part of the solution to environmental problems, but also has been characterized as a source of income and livelihood for many people, with no other options in life. From the interviews were semistructured, and with the method of analysis the meaning core were identified issues related to the holding of by scrap collectors, prejudice existing in relation to the activity performed, poor housing conditions, the need to social recognition and the difficulty of recyclable garbage collectors in forming a group in which they can articulate and fight for their demands. With this study, we intended to indicate suggestions for improvements in these health professionals and encourage individual and collective reflections on the condition of meetings and also through the distribution of leaflets.

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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)