Decrease Of Environmental Impact
Mostrando 25-36 de 37 artigos, teses e dissertações.
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25. USE OF RESIDUES PROCEEDING FROM MARBLES AND GRANITES FINISHING AND MANUFACTURING PROCESSES AS RAW MATERIAL FOR STRUCTURAL CERAMIC. / "Utilização do resíduo proveniente do acabamento e manufatura de mármores e granitos como matéria-prima em cerâmica vermelha"
In order to decrease environmental impact, caused by mud discarding and clay extraction in the ceramic industry, it was used residual mud from marble and granite companies for structural ceramic. Samples were collected in twelve different marble companies located at the metropolitan region of São Paulo. However, only four samples were selected, based on its
Publicado em: 2006
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26. Emprego de matriz polimérica biodegradável em dispositivos vaginais para liberação sustentada de progesterona em fêmeas bovinas: testes in vitro e in vivo / Use of biodegradable polymeric matrix, in vaginal devices, to sustained progesterone release in cows: in vitro e in vivo tests
With the increase in the number of animals inseminated by TAI (timed artificial insemination) the decrease of costs and the improvement of reproductive performance are the goals of several research groups. Progesterone devices which are majority constituted of a nylon skeleton covered with a silicone layer with P4, are used in TAI protocols. Aiming the decre
Publicado em: 2006
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27. Análise da adesão da população para implantação da pré-coleta nos sistemas de coleta seletiva de resíduos sólidos domiciliares da cidade de João Pessoa /PB
The final disposition of the solid wastes is today considered one of major problems in the cities of average and big size. This fact has taken, to the city organs, a revision and improvement of the administration of theses residues not limiting its management merely to the collection and final disposition, but searching a systematic decrease of the productio
Publicado em: 2005
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28. Estrutura para identificação e avaliação de impactos ambientais em obras hidroviárias. / Structure for identification and evaluation of environmental impact in hydrographic basin.
The growing concern about the environmental questions nowadays, can be understood as a nebulousness tendency, a result of a very rich expression of meaning and more convenient to us, who live without the historical distance, because it makes less definite under a future perspective, such expression is identified as globalization. Globalization conducts to a
Publicado em: 2004
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29. Use of flood plains in urban control and ecological restoration: the case study of the ribeirão das Pedras linear park - Campinas SP / Estudo das varzeas visando o controle de cheias urbanas e a restauração ecologica : o caso do parque linear do Ribeirão das Pedras, em Campinas, SP
The main goal of this study is to develop a methodology for the use of flood plains in territorial planning at regional level, aiming to optimize its function in the urban flood control and define ecological restoration criteria in areas alongside rivers. In order to achieve this objective an evaluation of urban hydrological dynamic impact, notably in relati
Publicado em: 2004
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30. Homegardens, their social and environmental characteristics and perspectives for the Saco do Mamanguá Community, Paraty-RJ. / Os quintais caiçaras, suas características sócio-ambientais e perspectivas para a Comunidade do Saco do Mamanguá, Paraty-RJ.
This dissertation had the objective of characterizing nineteen homegardens in the Saco do Mamanguá community, located in the Paraty County RJ. Social, economical and ethnoecological aspects were addressed in close association with external pressure factors in the regional context. Research-intervention methodology was used, as in social sciences, ethnoec
Publicado em: 2004
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31. Povos de terra e água:a comunidade pesqueira Canto do Mangue, Canguaretama (RN) - Brasil. / Peoples of land and water: the fishing community Canto do Mangue, Canguaretama (RN) Brazil.
The objective of this research was to analyze the changes occurred in the conditions of life in the human population, at community Canto do Mangue in Canguaretama (RN), and also their possible relationships with the introduction of the shrimp creation in captivity after 1980. Techniques of qualitative research were used (documentary analysis, interviews and
Publicado em: 2004
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32. KINETICS ASPECTS OF CHROMIUM (III) REMOVAL BY PRECIPITATE FLOTATION / ASPECTOS CINÉTICOS DA REMOÇÃO DE CROMO (III) POR FLOTAÇÃO DE PRECIPITADOS
Heavy metals contained in industrial effluents are sources of great potential environmental degradation, since their presence produce physicochemical alterations harming in the quality of the water. These alterations have a direct impact in the mortality of the flora and fauna affecting indirectly the human health. This dissertation refers to the study of th
Publicado em: 2003
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33. Effect of Nutrient Addition and Environmental Factors on Prophage Induction in Natural Populations of Marine Synechococcus Species
A series of experiments were conducted with samples collected in both Tampa Bay and the Gulf of Mexico to assess the impact of nutrient addition on cyanophage induction in natural populations of Synechococcus sp. The samples were virus reduced to decrease the background level of cyanophage and then either left untreated or amended with nitrate, ammonium, ure
American Society for Microbiology.
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34. Could CO2-induced land-cover feedbacks alter near-shore upwelling regimes?
The response of marine and terrestrial environments to global changes in atmospheric carbon dioxide (CO2) concentrations will likely be governed by both responses to direct environmental forcing and responses to Earth-system feedbacks induced by that forcing. It has been proposed that anthropogenic greenhouse forcing will intensify coastal upwelling in easte
National Academy of Sciences.
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35. Sexual selection affects local extinction and turnover in bird communities
Predicting extinction risks has become a central goal for conservation and evolutionary biologists interested in population and community dynamics. Several factors have been put forward to explain risks of extinction, including ecological and life history characteristics of individuals. For instance, factors that affect the balance between natality and morta
The National Academy of Sciences.
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36. Adapting to an invasive species: Toxic cane toads induce morphological change in Australian snakes
The arrival of invasive species can devastate natural ecosystems, but the long-term effects of invasion are less clear. If native organisms can adapt to the presence of the invader, the severity of impact will decline with time. In Australia, invasive cane toads (Bufo marinus) are highly toxic to most snakes that attempt to eat them. Because snakes are gape-
National Academy of Sciences.