Economic Value Of Water
Mostrando 13-24 de 76 artigos, teses e dissertações.
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13. Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite
Abstract Silicates (rhodonite, tephroite, spessartine) and the carbonate (rhodochrosite) of manganese are of economic interest in silicate-carbonated manganese ores. The recovery of both mineral classes by flotation constitutes a challenge; rhodochrosite is a slightly soluble mineral that can release Mn2+ ions in pulp. In this work, the effects of inorganic
Rem: Rev. Esc. Minas. Publicado em: 2015-12
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14. 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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15. 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
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16. Valoração, cobrança pelo uso da água e a gestão das bacias hidrográficas do Alto Iguaçu e afluentes do Alto Ribeira : uma abordagem econômico-ecológica / Valuation, charging for water use and managemente of Alto Iguaçu and tributaries of the Alto Ribeira watersheds : an economic-ecological approach
The degradation of the natural system throughout the century XX can be characterized by the upward trend and close relationship with the scale of economic activity, which requires increasing amounts of natural resources as a source of inputs as a source for the absorption of waste. Thus, what was once considered a good or service provided free by the natural
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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17. Ultraviolet radiation disinfection: study of process performance and economic evaluation / Desinfecção por radiação ultravioleta: estudo do desempenho do processo e avaliação econômica
This work studied UV disinfection process performance and economic costs for facultative stabilization ponds effluent pos treated in constructed wetland and another effluents with similar characteristic. The experimental work consisted of batch disinfection tests using UV reactor, evaluating variables that may affect performance and process costs in order to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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18. Challenges and potential of organic production: analysis of Project Cultivating Good Water (CAB), Parana Basin 3 / Os desafios e potencialidades da produÃÃo orgÃnica: anÃlise do Projeto Cultivando Ãgua Boa (CAB), na Bacia do Paranà 3
Family farming in organic agriculture sees a strategy to promote their economic and social development, adding value to their products. This new perspective has been constructed and expressed in the idea of "sustainability in the field." In this sense, the family farm and agro-ecological production, combined with the practices conscious consumption, can occu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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19. Azeite de pequi: efeito do aquecimento em temperatura de fritura e utilização como ingrediente na formulação de maionese / Pequil oil: effect of heating to temperature of frying and use as ingredients in the formulation of mayonnaise
Pequi is a fruit typical of the brasilian savanna and among the nutrients found in the internal mesocarp, the lipids are present in higher percentage. Due to the presence of carotenoid pigments, notorius as antioxidants, pequi oil has red-orange color. Among these carotenoids found beta-carotene, that has also pro-vitamin A activity. The mayonnaise, emulsion
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/06/2011
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20. Parques agrários no baixo Jaguaribe : arquitetura rural da região dos perímetros irrigados resultante do planejamento de bacias hidrográficas / Agrarian park on lower Jaguaribe : rural architecture in the region of irrigated perimeters resulting from watersheds planning
Human interventions confer throughout history personality and typical characteristics in several regions. In Ceará, the region of the irrigated areas of low Jaguaribe is a good example of the interaction that takes place in the landscape, mainly by human disturbances - which reveals a mastery over nature - and by the landscapes when associated to the histor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/05/2011
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21. Balanço hídrico e energético de um sistema predial de aproveitamento de água de chuva / Water and energy balance of a rainwater harvesting system for a building gutter
The use of rainwater as an alternative source of water supply is a practice on the rise, mainly for its importance in conservation of water resources. However, the user often ignores the energy that this system may require, and depending on its design, can be considered a relevant factor in its application. The conceptions and components of a rainwater harve
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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22. Aplicações da celulose de palha de cana-de-açúcar: obtenção de derivados partindo de celulose branqueada e de biocompósitos com poliuretana obtida a partir de óleo de mamona (Ricinus communis L.) / Applications of sugarcane straw cellulose: obtainment of derivatives from bleached cellulose and biocomposites with polyurethane obtained from castor oil (Ricinus communis L.)
The sugarcane processing generates various agricultural byproducts such as bagasse and straw, which is considered one of the main waste generated due to the mechanization of the harvest in Brazil. Thus, the availability and composition of sugarcane straw have driven a great effort to develop technologies that provide its effective utilization. This study aim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/04/2011
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23. Desempenho de bananeiras irrigadas em resposta a diferentes profundidades efetivas do solo na Chapada do Apodi - CE / Performance of banana in response to different irrigation effective soil depth in the Apodi Plateau - CE
The production of banana can be affected whether plants are cropped in sites with physical impedances, as those found in shallow soils. The aim of this research was to verify if irrigated banana plants performance is affected by effective soil depth, and for this purpose were evaluated both soil physical and chemical attributes, as well as plants nutritional
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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24. Transferência condicionada de renda e segurança alimentar em espaços rurais: uma análise do Programa JUNTOS na comunidade indígena de Pilpichaca no Peru / Conditional cash transfer and food security in rural areas: Analyze of the Program JUNTOS in Pilpichaca indigenous community in Peru
In Peru, although significant economic and social achievements have occurred in recent years, there is still a difficulty in providing food to entire population. This is reflected in a high prevalence of child malnutrition, mainly concentrated in rural areas, where, in the first half of 2010, even 30.9% of children is malnourished. This situation represents
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2011