Water Column Profile
Mostrando 13-24 de 27 artigos, teses e dissertações.
-
13. Utilização do estéril da extração do gesso, como condicionador das propriedades físicas de um neossolo quartzarênico do semi-árido pernambucano
The effects of the addition of the sterile material resulting from the gypsite mining as a soil conditioner were studied. The sterile was incorporated into a Neossolo Quartzarênico collected in the county of Petrolina, PE. Initially the sterile was separated into six granulometric intervals through sieving in the following grades: <1mm, <2mm, <4mm, between
Publicado em: 2007
-
14. Teoria de cojuntos fuzzi no estudo da dinamica da agua e de solutos no solo / Fuzzi sets theory applied in the soil s water and solutes dynamics
Conhecer a dinâmica da água e de solutos no solo é condição imprescindível para a produção agrícola sustentável. O sucesso destes modelos numéricos em descrever a dinâmica da água e de solutos no solo está intimamente ligado à precisão com que os parâmetros físicohídricos, envolvidos nestes processos são determinados. De uma maneira geral
Publicado em: 2007
-
15. Variações na acumulação de matéria orgânica, ao longo do holoceno, em sedimentos da região costeira de Ubatuba-São Paulo / Changes in the organic matter accumulation, during holocene, in coastal sediments from Ubatuba region-São Paulo
Changes in the organic carbon accumulation rates (Corg A.R.) and organic matter source characteristics and their relation to climate and relative sea level changes during the last 8.500 cal. yr. B.P. were investigated in two sediment cores from 2 embayments - Flamengo and Fortaleza inlets - northern coast of São Paulo State. Sediment samples were analysed f
Publicado em: 2007
-
16. "Rio Grande Reservoir: limnological characteristics of the water and metal bioavailability in sediment." / "Reservatório Rio Grande: caracterização limnológica da água e biodisponibilidade de metais-traço no sedimento"
The Rio Grande branch is a part of Billings Complex and is isolated from the central body by Anchieta Dam. This reservoir is located in São Paulo Metropolitan Region and has multiple uses, including water supply, recreation, leisure, receptor of domestic and industrial wastewater. At the present work, the water column was studied in 6 stations along the res
Publicado em: 2006
-
17. Aspectos do comportamento de gás metano dissolvido na água de reservatórios brasileiros / Aspects of dissolved methane behavior in water bodies of brazilian reservoirs
Extended water bodies such as the hydroelectric reservoirs here studied can be greenhouse gas sources ( CH IND.4 and CO IND.2 ) due to decay of part of submerged forest biomass and also due to allochtonous and autochtonous organic compounds. This work presents concentrations, ebullitive and diffusive fluxes of the gases dissolved in the water column in the f
Publicado em: 2004
-
18. Transporte de chumbo e metais associados no Rio Ribeira do Iguape, São Paulo, Brasil
The objective of the present study is to clear some aspects of the transport of Lead and associated metais by suspended particulate matter along the Ribeira de Iguape River, in the southeastern region of the state of São Paulo. Literature data were taken into account, as well as findings gathered trom studies of sediments collected in stations at different
Publicado em: 1997
-
19. Recuperação de energia na destilação do sistema etanol-agua
Energy recovery is now days one the most important tasks that chemical engineeries face, specially when distillation is involved. Between the energy recovery techniques to be applied to distillation columns, vapour recompression has been pointed out as one of the most promissing. The application of this technique has been discussed in the literature and reco
Publicado em: 1983
-
20. PRODUCAO PRIMARIA E SUAS RELACOES COM ALGUNS FATORES FISICO-QUIMICOS EM RESERVATORIOS DO ESTADO DE SAO PAULO. / Primary production of Santos Bay, Sao Paulo state: aspects of the photosynthetic efficiency in a polluted environment
The present work is part of a 1argeT project entited "Typo1ogy of Reservoirs of the State of São Paulo". It was sponsored by FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo - State Foundation for Research Support), and included the study of 52 reservoirs. For the present study, ten reservois were sampled four times during 1979. Seven of the
Publicado em: 1981
-
21. Heterotrophic Activity Throughout a Vertical Profile of Seawater and Sediment in Halifax Harbor, Canada
The relative heterotrophic activity of marine microorganisms was determined at two sites by the heterotrophic uptake technique throughout the water column, the sediment-water interface, and the surface layer of sediment. In the water column, uptake was greatest at the surface and steadily decreased with depth. The percentage of the substrate that was respire
-
22. Examination and characterization of distribution system biofilms.
Investigations concerning the role of distribution system biofilms on water quality were conducted at a drinking water utility in New Jersey. The utility experienced long-term bacteriological problems in the distribution system, while treatment plant effluents were uniformly negative for coliform bacteria. Results of a monitoring program showed increased col
-
23. Molecular dynamics study of free energy profiles for organic cations in gramicidin A channels.
The free energy profiles for four organic cations in right-handed single-helix gramicidin A dimers were computed by using umbrella sampling molecular dynamics with CHARMM. Ion-water column translocations were facilitated by using a novel "water-tunnel" approach. The overlapping pieces of free energy profile for adjacent windows were selected from three traje
-
24. Spatial and Temporal Analysis of the Microbial Community in Slow Sand Filters Used for Treating Horticultural Irrigation Water
An experimental slow sand filter (SSF) was constructed to study the spatial and temporal structure of a bacterial community suppressive to an oomycete plant pathogen, Phytophthora cryptogea. Passage of water through the mature sand column resulted in complete removal of zoospores of the plant pathogen. To monitor global changes in the microbial community, ba
American Society for Microbiology.