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| Targa, Marcelo dos Santos; Batista, Getulio Teixeira; Mostarda Neto, Nazareno; Maria Filho, Paulo José. |
| O presente trabalho objetivou determinar os Hidrogramas de Precipitações Efetivas Máximas a partir do método do Hidrograma Unitário (HU) da bacia do Ribeirão Serragem no município de Tremembé, SP no vale do Paraíba do Sul, localizada na parte a montante da barragem da Fazenda Maristela. Foram empregadas técnicas de geoprocessamento com o uso de ferramentas do SPRING para a caracterização do uso e ocupação do solo e caracterização física da bacia para o cálculo da Precipitação efetiva (Pe) resultante de chuvas máximas sobre a bacia simuladas para 2, 5, 10, 15, 20, 25, 50, 100 e 200 anos. O cálculo da Pe foi realizado pelo método do Curva Número (CN). Os resultados indicaram que a bacia do Ribeirão Serragem apresenta um bom estado de conservação, levando em... |
| Tipo: Article |
Palavras-chave: Bacia; Ciências ambientais; Escoamento; Uso do solo; Basin; Environmental science; Land use; Water flow. |
| Ano: 2015 |
URL: http://hdl.handle.net/2315/284 |
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| Blanco,Flávio F.; Folegatti,Marcos V.. |
| The evapotranspiration (ETc) and crop coefficient (Kc) of cucumber in a greenhouse were determined during the winter-spring season in Piracicaba, SP, Brazil. Crop was irrigated with water of three different levels of salinity: S1 = 1.5, S2 = 3.1 and S3 = 5.2 dS m-1. Electrical conductivity of S1 was obtained only by addition of fertilizers, as fertigation was used, and the S2 and S3 levels in addition to fertilizers received magnesium sulphate, calcium chloride and sodium chloride. Cucumber seedlings, cv. Hokushin, were grafted on squash, transplanted on beds in double rows and directed vertically with a single stem. Irrigation was performed when soil matric potential reached -30 kPa, which was determined by the mean matric potential at 0.15 and 0.30 m... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water balance; Water flow; Deep percolation; Evaporation pan. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662003000200017 |
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| Jorge,Luiz Alberto Blanco. |
| A study was taken in a 1566 ha watershed situated in the Capivara River basin, municipality of Botucatu, São Paulo State, Brazil. This environment is fragile and can be subjected to different forms of negative impacts, among them soil erosion by water. The main objective of the research was to develop a methodology for the assessment of soil erosion fragility at the various different watershed positions, using the geographic information system ILWIS version 3.3 for Windows. An impact model was created to generate the soil's erosion fragility plan, based on four indicators of fragility to water erosion: land use and cover, slope, percentage of soil fine sand and accumulated water flow. Thematic plans were generated in a geographic information system (GIS)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water flow; Hydric erosion; Analytical hierarchy process. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000500011 |
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| Sipaúba-Tavares, Lúcia Helena; UNESP - Jaboticabal; Lourenço, Elaine Mirela; UNESP - Jaboticabal; Braga, Francisco Manoel de Souza; UNESP - Rio Claro. |
| Este estudo verificou algumas variáveis limnológicas na água de entrada em seis viveiros de criação semi-intensiva de peixes com distribuição sequencial de água em três períodos distintos de engorda de peixes (maio, outubro e janeiro), durante 15 dias consecutivos em cada período. Somente o fósforo e pH variaram entre os pontos e períodos de coleta (p < 0,01) e o oposto (p > 0,05) ocorreu com nitrito e oxigênio dissolvido. Ao longo do período não foram significativas (p > 0,05) as variáveis como oxigênio dissolvido, condutividade, alcalinidade, CO2 livre, bicarbonato, clorofila-a, nitrito e amônia. No mês de maio, correspondente ao final do período de engorda de peixes, os viveiros apresentaram em geral maiores concentrações,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water flow; Water quality; Fishpond; Sequential distribution water flow; Water quality; Fishpond; Sequential distribution. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3436 |
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| Luz,R.K.; Santos,J.C.E.; Pedreira,M.M.; Teixeira,E.A.. |
| The effects of different water flow rates and feed training on the production of "pacamã" Lophiosilurus alexandri juveniles were evaluated. In the first experiment, nine day post-hatch larvae (n= 2,400) were stocked at a density of 5 larvae/L. Different water flow (F) rates were tested: F1 = 180; F2 = 600; F3 = 1,300; and F4 = 2,600mL/min. Artemia nauplii were offered as food during the first 15 days of active feeding. In the second experiment for feed training, 720 juveniles (total length of 22.2mm) were stocked at a density of 1.5 juveniles/L. A water flow rate similar to F1 was used. The use of extruded dry diet was tested, and feed training was done with and without other enhanced flavors (Artemia nauplii or Scott emulsion). The water flow rates did... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feed training; Juvenile production; Larviculture; Lophiosilurus alexandri; Water flow. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000400024 |
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