Rainwater Samples
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Disponibilidade hídrica e fertilização mineral nas características da madeira e do carvão vegetal de Eucalyptus grandis W. Hill ex Maiden
Resumo As alterações na qualidade da madeira das árvores de Eucalyptus causadas pela fertilização e disponibilidade hídrica podem influenciar as características da biomassa e do carvão vegetal. O objetivo deste trabalho foi avaliar as características da madeira e do carvão vegetal de Eucalyptus grandis sob o efeito da fertilização com potássio e
Ciênc. Florest.. Publicado em: 02/12/2019
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2. Wood and Briquette Density Under the Effect of Fertilizers and Water Regimes
ABSTRACT The aim of this study was to evaluate the effects of potassium and sodium fertilization (control: 4.5kmol.ha-1 of KCl and 4.5kmol.ha-1 of NaCl), and water regimes (100% and 63% rainfall with artificial exclusion) on wood and briquette density in Eucalyptus grandis trees at 5 years, and the application of X-ray densitometry on the quality of briquet
Floresta Ambient.. Publicado em: 07/01/2019
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3. Spatial dependence of attributes of rainfed maize under distinct soil cover conditions
RESUMO O cultivo de milho em sequeiro é amplamente explorado no Nordeste Brasileiro pela agricultura familiar, para alimentação humana e animal. Para melhorar a captação da água da chuva e a umidade do solo, pode-se adotar a cobertura morta, embora essa prática ainda seja raramente aplicada no cultivo de milho de sequeiro. Neste contexto, o objetivo d
Rev. bras. eng. agríc. ambient.. Publicado em: 2019-01
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4. Spatial and Temporal Potential Groundwater Recharge: the Case of the Doce River Basin, Brazil
ABSTRACT: Little is known about the groundwater recharge potential of weathered tropical catchments, where increasing water uptake is widespread to meet various water demands. This study aimed to estimate the volume of groundwater recharge of the Doce River Basin, Minas Gerais, Brazil. The BALSEQ model was applied to calculate the water balance over a period
Rev. Bras. Ciênc. Solo. Publicado em: 20/12/2018
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5. Frequency and molecular characterisation of Entamoeba histolytica, Entamoeba dispar, Entamoeba moshkovskii, and Entamoeba hartmanni in the context of water scarcity in northeastern Brazil
This study aimed to estimate the frequency, associated factors, and molecular characterisation of Entamoeba histolytica, Entamoeba dispar, Entamoeba moshkovskii, andEntamoeba hartmanni infections. We performed a survey (n = 213 subjects) to obtain parasitological, sanitation, and sociodemographic data. Faecal samples were processed through flotation and cent
Mem. Inst. Oswaldo Cruz. Publicado em: 02/02/2016
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6. Mapping Ethanol Production Sources in Brazil Through Stable Isotopes
Ethanol is a biofuel produced in Brazil through fermentation of sugarcane, requiring vast plantation areas and water availability. The present work aimed at testing isotopic markers as tools for ethanol source appointment or certification of origin. For this, oxygen and hydrogen isotopic patterns were determined in plant-water, soil-water, rainwater, and wat
J. Braz. Chem. Soc.. Publicado em: 2015-06
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7. First records of pollen rain in bromeliad tanks in an area of caatinga in northeastern Brazil
Species of Bromeliaceae have leaves in a spiral configuration. Because of the shape of the rosette thus formed and the imbricate configuration of the leaf sheaths, there is usually a tank in which rainwater and other components of the environment, including pollen grains, accumulate, making such tanks effective pollen rain collectors. The objective of this s
Acta Bot. Bras.. Publicado em: 2014-06
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8. Cladocera (Crustacea, Branchiopoda) of a temporary shallow pond in the Caatinga of Pernambuco, Brazil
The aim of this study was to describe the composition and structure of cladocerans of littoral areas with and without macrophytes from a temporary shallow pond in the Caatinga of Pernambuco state (Brazil). Samples were taken between June 2011 and August 2012. The sampling of cladocerans and environmental variables was performed at four fixed points, using a
Nauplius. Publicado em: 2013-06
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9. Standardization and validation of analytical method for solid phase extraction of levoglucosan in rainwater samples with analysis by gas chromatography coupled to mass spectrometry / Padronização e validação analítica do método de extração em fase sólida de levoglucosano em amostras de água de chuva com análises por cromatografia gasosa acoplada à espectrometria de massas
Neste trabalho, o método de extração em fase sólida (SPE) com análises por cromatografia gasosa acoplada à espectrometria de massas (GC-MS) foi desenvolvido para a determinação de levoglucosano em amostras de água de chuva da região de Ribeirão Preto-SP, Brasil. O monossacarídeo levoglucosano foi proposto como um marcador específico para queima
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/10/2012
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10. AnÃlise do Fluxo de Gases na Camada de Cobertura do Aterro SanitÃrio Municipal Oeste de Caucaia (ASMOC) / Analysis of gas Flow in covering layer of Municipal Landfill West of Caucaia (ASMOC)
The growing human consumption entails a greater generation of waste, which, in turn, must be properly treated and disposed. The storage of waste in landfills produces gas, which if not managed properly will affect the quality of life. The uncontrolled emissions of these gases cause multiple economic, social and environmental impacts, as due to air pollution
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/01/2012
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11. Avaliação da qualidade da água de chuva e de um sistema filtro-vala-trincheira de infiltração no tratamento do escoamento superficial direto predial em escala real em São Carlos SP / Evaluation of rainfall water quality and a filter-swaleinfiltration trenches system in the treatment of the building direct runoff in real scale in são carlos sp
Several studies cite the pollution of stormwater as equivalent and sometimes even superior to those found in the sewers. According to this premise and thinking about environmental issues, especially in the contamination of groundwater and the spread of waterborne diseases, the quality of rainwater has become an important focus of study. This work concerns th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/08/2011
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12. Composição química das águas pluviais e deposição atmosférica anual na bacia do Alto Sorocaba (SP)
Two sampling points were chosen and forty samples were collected between January and December 2006 at Alto Sorocaba basin. The rainwater pH varied from 5.46 to 6.36 (Ibiúna) and 5.26 to 6.81 (Itupararanga), being Ca2+ the main ion responsible for controlling the rainwater pH. The ionic concentrations decreased in the following order: Ca2 +>Na+> Mg2+>K+ for
Química Nova. Publicado em: 2011