Water Economy
Mostrando 1-12 de 123 artigos, teses e dissertações.
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1. Technological properties of a self-bloating clay and expanded-clay aggregate for the production of lightweight concrete
Abstract The global interest in an increasingly sustainable economy, with a reduction in the consumption of raw materials and energy, can be supported by the growth in the use of lightweight concrete (LC) produced with expanded-clay aggregates (EA). The main qualities of natural self-bloating clay for the production of EA were studied, analyzing the paramete
Cerâmica. Publicado em: 2023
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2. The influence of separately and combined bentonite and kaolinite as binders for pelletization of NaA zeolite from coal fly ash
Abstract Pelletization of zeolitic materials is required to facilitate their practical industrial and commercial applications. Zeolite-NaA was synthesized from fly ash by the fusion method and shaped into spherical granules. Bentonite, kaolinite, and a combination of bentonite with kaolinite were tested as binders with different contents from 5 to 10 wt%. Th
Cerâmica. Publicado em: 2022
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3. Magnetic concentration route for recovering pellet feed fines stored in a mining dam
Abstract The greatest and noblest challenge of mining engineering for the present and the future of iron ore treatment could be considered as the pursuit of optimizing the use of mineral resources. The use of mining tailings, in the mineral sector itself, or in another industrial branch, meets the needs of circular economy as it increases the useful service
REM - International Engineering Journal. Publicado em: 2022
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4. Iron Nitrate Modified Cotton and Polyester Textile Fabric Applied for Reactive Dye Removal from Water Solution
In this work, we investigated the use of cotton scraps in natura and modified with iron nitrate, in the adsorption of one of the main water contaminants of the textile industries, the reactive black dye. Special attention was paid to the appropriate destination of the spent adsorbent, in compliance with the precepts of the circular economy. Cotton and polyes
J. Braz. Chem. Soc.. Publicado em: 2021-05
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5. Influence of the salt concentration on action mechanisms of natamycin against microorganisms of importance in food manufacture
Abstract The objective of this study was to evaluate the influence of salt concentration on action of natamycin on important microorganisms in food manufacturing as this preservative has been used in immersion baths in several dairy products in the country. Strains of Candida albicans, Escherichia coli and Staphylococcus aureus were inoculated at different s
Food Sci. Technol. Publicado em: 2020-06
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6. The production of ornamental pineapple in pots under different drip-irrigation depths
ABSTRACT The objective of this work was to evaluate the effects of irrigation depth on the commercial production of ornamental pineapple in pots. The experiment was carried out in a greenhouse located in Fortaleza, in the state of Ceará, Brazil. The experimental design was completely randomised, with five treatments and four replications. The treatments wer
Rev. Ceres. Publicado em: 2020-04
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7. Rentabilidade do milho e do feijão submetido a diferentes lâminas de irrigação em Mato Grosso
Resumo Quantificar o consumo hídrico para a irrigação é essencial para otimizar o uso da água e contribuir para o alcance da eficiência econômica, que pode ser articulada com planejamento e estratégias de manejo. O objetivo desta pesquisa consiste em quantificar o custo variável do manejo da irrigação e a rentabilidade de milho e feijão aliados �
Rev. Econ. Sociol. Rural. Publicado em: 28/11/2019
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8. Nassarius foveolatus (Gastropoda, Nassariidae), a new record of an exotic species in Brazil
Abstract Exotic species are those that occur in an area beyond their natural limit and they are considered invasive when they cause harm to the economy, environment, or human health. In coastal environments, ballast water and inlays on the hull and other parts of vessels are the main ways of introducing invasive aquatic alien species. Nassarius foveolatus (D
Pap. Avulsos Zool.. Publicado em: 28/11/2019
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9. Influence of the salt concentration on action mechanisms of natamycin against microorganisms of importance in food manufacture
Abstract The objective of this study was to evaluate the influence of salt concentration on action of natamycin on important microorganisms in food manufacturing as this preservative has been used in immersion baths in several dairy products in the country. Strains of Candida albicans, Escherichia coli and Staphylococcus aureus were inoculated at different s
Food Sci. Technol. Publicado em: 25/11/2019
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10. How much do we know about the groundwater quality and its impact on Brazilian society today?
Resumo As águas subterrâneas são um recurso imprescindível para a sociedade e o meio ambiente no Brasil. Mais de 557 m3/s (17.5 km3/a) são extraídos através de 2.5 milhões de poços para atender a demanda nas cidades e no campo, gerando uma economia de R$ 56 bilhões ao ano (US$ 14 bilhões/ano). O aquífero tem função impar no ciclo hidrológico,
Acta Limnol. Bras.. Publicado em: 04/11/2019
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11. Substituição de lâmpadas fluorescentes por light emitting diode (LED) em uma instituição de ensino: preocupação ambiental, energética e econômica
RESUMO As lâmpadas fluorescentes (LFs) podem causar sérios problemas ambientais e à saúde humana. Tal fato se deve à presença de mercúrio em sua constituição e, quando descartadas inadequadamente, podem ocasionar a contaminação do solo, do ar e da água. Já as lâmpadas light emitting diode (LED), além de mais econômicas e com maior vida útil
Eng. Sanit. Ambient.. Publicado em: 09/09/2019
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12. Elevated atmospheric CO2 concentration improves water use efficiency and growth of a widespread Cerrado tree species even under soil water deficit
ABSTRACT Changes in atmospheric CO2 levels are accompanied by ecological interactions involving other environmental factors, such as drought, which can severely alter the water balance of plants, thereby influencing sap flow, gas exchange, and plant growth. The objective of this study was to evaluate the water use economy, leaf gas exchange, and growth of yo
Acta Bot. Bras.. Publicado em: 19/06/2019