Surface Water Quality
Mostrando 1-12 de 236 artigos, teses e dissertações.
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1. Straw management effects on sugarcane growth, nutrient cycling and water use in the Brazilian semiarid region
ABSTRACT It was evaluated how straw management modifies the development, growth, nutrient cycling and crop water productivity of sugarcane in the semiarid region of Brazil. The experiment was carried out using two plots with 5 ha each, being one without straw on the soil surface and one with 26 Mg·ha-1 covering the soil. Sugarcane growth and development and
Bragantia. Publicado em: 2020-12
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2. Optimization for sensory and nutritional quality of a mixed berry fruit juice elaborated with coconut water
Abstract A new juice market, consisting of mixtures of fruits, is expanding in the beverage segment, in order to increase even more the nutritional and sensory characteristics. In addition, in the preparation of juices, the option exists to replace water with coconut water. The aim of this study was to develop and optimize mixed juices based on coconut water
Food Sci. Technol. Publicado em: 2020-12
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3. Changes in soil chemical and physical properties in pasture fertilised with liquid swine manure
ABSTRACT: Chemical and physical properties of soil can be altered with the successive application of liquid swine manure (LSM), also known as slurry. Therefore, monitoring the impact of LSM is essential to an assessment of the potential agronomic and environmental benefits and risks associated with management practices. The aim of this study was to evaluate
Sci. agric. (Piracicaba, Braz.). Publicado em: 20/12/2019
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4. Effect of resin content and pressing temperature on banana pseudo-stem particle boards properties using full factorial design
Abstract: The volume of global gross banana exports reached a record of 117.9 million tonnes in 2015 (FAO 2017), which agro-industrial wastes derived as the pseudo-stem, rachis and leaves do not have an industrial application instead they are discarded. This research study applies full factorial design and response surface methodology to determine the effect
An. Acad. Bras. Ciênc.. Publicado em: 02/12/2019
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5. INTERACTIONS BETWEEN ADJUVANTS AND THE FUNGICIDE AZOXYSTROBIN+BENZOVINDIFLUPYR IN HYDRAULIC SPRAYING
ABSTRACT Adjuvants are tools to maximize pesticide spray quality. This study aimed to evaluate the interaction effects between adjuvants and the fungicide azoxystrobin + benzovindiflupyr on the physicochemical characteristics, droplet evaporation time, and spray droplet size. The experiment was carried out using a 2×6 factorial scheme, in which the first fa
Eng. Agríc.. Publicado em: 04/11/2019
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6. 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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7. Physicochemical quality of and Escherichia coli resistance profiles in urban surface waters
Resumo Os ecossistemas aquáticos dos rios urbanos são contaminados pela disposição de resíduos, o que representa um problema de saúde pública. Esta pesquisa teve por objetivo avaliar a qualidade das águas utilizadas para recreação e abastecimento público de seis rios da cidade de Cascavel – Paraná, sendo eles: Cascavel, Quati, Bezerra, Antas, C
Braz. J. Biol.. Publicado em: 21/10/2019
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8. Relationship between land use and water quality in a watershed impacted by iron ore tailings and domestic sewage
Resumo O uso e ocupação do solo, o aumento populacional e a urbanização de áreas próximas a bacias hidrográficas causam diversos impactos negativos na qualidade das águas superficiais. Diante essa assertiva, foi realizado um estudo abrangente sobre a qualidade da água na bacia hidrográfica do Rio do Peixe, tributário do Rio Doce, localizado no Qua
Rev. Ambient. Água. Publicado em: 10/10/2019
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9. Land use and water quality in watersheds in the State of São Paulo, based on GIS and SWAT data
Resumo O uso e ocupação do solo influenciam a qualidade e a disponibilidade de água, devendo ser considerados numa gestão integrada dos recursos hídricos e no planejamento das bacias hidrográficas. Ferramentas de geoprocessamento têm sido utilizadas para classificação do uso do solo e combinadas com modelos hidrológicos para avaliação do impacto
Rev. Ambient. Água. Publicado em: 03/10/2019
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10. Study of fluvial water treatability using γ-polyglutamic acid based biopolymer coagulant
Abstract: Successful treatment of surface water for public use requires the evaluation of raw water and coagulant efficacy. The purpose of water treatment is to remove impurities, allowing its quality to be classified to meet the needs of the population. The conditions of urban rivers that flow though the city of São Paulo, which were already undergoing maj
An. Acad. Bras. Ciênc.. Publicado em: 02/09/2019
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11. Pesticide Determination in Water Samples from a Rural Area by Multi-Target Method Applying Liquid Chromatography-Tandem Mass Spectrometry
The rises of toxic effects caused by pesticides are of concern. However, Brazilian legislation still needs scientific subsides to improve the water quality requirements. This can be attributed in part to the few existing studies showing the occurrence and levels of multi-residue pesticides. Therefore, the objective of this study was to investigate the presen
J. Braz. Chem. Soc.. Publicado em: 12/08/2019
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12. Selection of variables in the definition of a water quality index for the Brazilian Federal District
Resumo Os Índices de Qualidade da Água - IQAs, baseiam-se em um pequeno número de variáveis que estabelecem categorias para a qualidade da água. Esse método apresenta alguns problemas quanto às avaliações, pois os IQAs não consideram os usos múltiplos da água, bem como as diferenças nas características regionais. O presente estudo tem como obje
Rev. Ambient. Água. Publicado em: 22/07/2019