Natural Water Resources
Mostrando 25-36 de 237 artigos, teses e dissertações.
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25. ESPACIO, TERRITORIO Y LA POLÍTICA DEL AGUA EN LAS SIERRAS CHICAS DE CÓRDOBA – ARGENTINA
ABSTRACT A diversity of initiatives carried out by groups and institutions to find solutions to the water crisis affecting the area of ‘Sierras Chicas’ in the Province of Córdoba, Argentina, are articulated with certain space-territorial dynamics. In this article, and based on an ethnographic and comparative analysis, I describe and analyze different co
Soc. nat.. Publicado em: 2015-08
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26. Application of foam column as green technology for concentration of saponins from sisal (Agave sisalana) and Juá (Ziziphus joazeiro)
Saponins, molecules classified as triterpenic or steroidal glycosides, are metabolites distributed in all the plant kingdom that can be used for the production of foods, cosmetics, and pharmaceuticals, as well as in soil bioremediation. Saponins are normally extracted from natural resources with water, ethanol and/or methanol, and then concentrated by liquid
Braz. J. Chem. Eng.. Publicado em: 2013-12
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27. Structure and dynamics of the community of periphytic algae in a subtropical reservoir (state of São Paulo, Brazil)
Much remains to be learned about biological diversity, which constitutes a valuable natural resource. Due to the pressure that human activity has put on natural resources, biodiversity has been reduced, often unbeknownst to those responsible for that activity. Therefore, we aimed to perform a quantitative and qualitative analysis of periphytic algae in the I
Acta Bot. Bras.. Publicado em: 2013-09
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28. A new method to determine the density and water absorption of fine recycled aggregates
The construction industry keeps on demanding huge quantities of natural resources, mainly minerals for mortars and concrete production. The depletion of many quarries and environmental concerns about reducing the dumping of construction and demolition waste in quarries have led to an increase in the procuring and use of recycled aggregates from this type of
Mat. Res.. Publicado em: 21/05/2013
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29. The level of environmental noise affects the physiological performance of Glycine max under water deficit
Plants in natural environments are subjected to a multitude of environmental cues. However, studies addressing physiological analyzes are usually focused on the isolation of a stress factor, making it difficult to understand plants behavior in their extremely complex natural environments. Herein, we analyzed how environmental variability (noise) may influenc
Theor. Exp. Plant Physiol.. Publicado em: 2013
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30. Química Sem Fronteiras: o desafio da energia
Coal, natural gas and petroleum-based liquid fuels are still the most widely used energy sources in modern society. The current scenario contrasts with the foreseen shortage of petroleum that was spread out in the beginning of the XXI century, when the concept of "energy security" emerged as an urgent agenda to ensure a good balance between energy supply and
Quím. Nova. Publicado em: 2013
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31. Avaliação de concreto auto-adensável com agregado reciclado de telha cerâmica / Evaluation of self-compacting concrete produced with the recycled aggregate tile
The increasing demand for raw materials in construction, especially those drawn from nature, is of great concern due to harmful impacts it produces. The use of recycled aggregates can be a sustainable and contribute to the preservation of natural resources, contributing to the sustainable development of the construction industry. The residue from the ceramic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/08/2012
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32. SE PLANTA E COLHE ALIMENTOS NESTE SERTÃO: resistência e permanência da autonomia camponesa e as estratégias do MPA (Movimento dos Pequenos Agricultores) nas contradições do projeto da soberania alimentar. / IF THIS PLANT FOOD AND REAP SERTÃO: resistance and persistence of peasant autonomy and strategies of the MPA (Movement of Small Farmers) contradictions in the design of food sovereignty.
This dissertation has the objective of analyze the production unit of the rural family, from the Small Agriculture Movement MPA. To reach this objective, a historic study of the MPA was carried out, its organization, specialization, its relation with the rural way. We focused our research in the territory of the High back-country of Sergipe, which configures
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2012
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33. Gestão de recursos hídricos : o caso da ocupação do solo e uso dos recursos hídricos do setor habitacional Vicente Pires - DF
The modernization of civilization was based on a developmental model based on massive use of natural resources. Among the many problems related to urban environment, the issue of water resources is likely to be one of the most immediate, taking in the discussion regarding the development, worldwide, an increasing importance. Thus, this study aims to discuss
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/06/2012
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34. GestÃo de ReservatÃrios com Sistema de Apoio à DecisÃo Espacial: o Caso do AÃude CastanhÃo / Reservoir Management System with Spatial Decision Support: The Case of Dam CastanhÃo
No Brasil, a Lei das Ãguas no 9.433, de 08/01/1997, fundamentada na PolÃtica Nacional de Recursos HÃdricos, conceitua Ãgua como um recurso natural limitado e de valor econÃmico agregado, cuja gestÃo à condicionada à sua anÃlise e operaÃÃo, em funÃÃo dos seus usos mÃltiplos. Como um bem indispensÃvel à vida, a Ãgua, em sua abundÃncia ou esca
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/06/2012
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35. planejamento regional e urbano e a questão ambiental : análise da relação entre o plano de bacia hidrográfica Tietê‐Jacaré e os planos diretores municipais de Araraquara e São Carlos, SP / planejamento regional e urbano e a questão ambiental : análise da relação entre o plano de bacia hidrográfica Tietê‐Jacaré e os planos diretores municipais de Araraquara e São Carlos, SP
This Thesis is included on the discussion about the integration of the environmental dimension in the territorial management. More specifically, discuss the manner how the environmental issues have been treated in the tools and practices of management located at two territorial limits: in the municipal planning and in the regional planning by river basin. Ev
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/06/2012
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36. Caracterização ambiental e estimativa da produção de cargas difusas da área de drenagem da represa de Itupararanga, SP / Environmental characterization and estimative of diffuse pollution of Itupararanga watershed, SP
The use of satellite images has improved the study of the land use dynamics. Land cover mapping have become fundamental tools in the assessment of landscape changes caused by human action and its influence on regional and urban planning. Computation tools such as Geographic Information Systems and hydrological models have supported these findings. The hydrol
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/05/2012