Surface Water Sources
Mostrando 13-24 de 122 artigos, teses e dissertações.
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13. BIOFILM FORMATION OF Vibrio cholerae ON STAINLESS STEEL USED IN FOOD PROCESSING
Vibrio cholerae represents a significant threat to human health in developing countries. This pathogen forms biofilms which favors its attachment to surfaces and its survival and transmission by water or food. This work evaluated the in vitro biofilm formation of V. cholerae isolated from clinical and environmental sources on stainless steel of the type used
Rev. Inst. Med. trop. S. Paulo. Publicado em: 24/05/2016
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14. Managing agricultural phosphorus to minimize water quality impacts
ABSTRACT Eutrophication of surface waters remains a major use-impairment in many countries, which, in fresh waters, is accelerated by phosphorus (P) inputs from both point (e.g., municipal waste water treatment plants) and nonpoint sources (e.g., urban and agricultural runoff). As point sources tend to be easier to identify and control, greater attention has
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-02
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15. Production and characterization of di-rhamnolipid produced by Pseudomonas aeruginosa TMN
Pseudomonas aeruginosa TMN was used to produce rhamnolipid (RL) from a variety of carbon and nitrogen substrates. The most favorable carbon sources for RL production were glucose and glycerol (both at 40 g/L), giving a RL yield of 0.3 and 0.25 g/L, respectively. Meanwhile, sodium nitrate appeared to be the preferable nitrogen source, resulting in a RL produc
Braz. J. Chem. Eng.. Publicado em: 2014-12
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16. Estoque de combustível fino e decomposição de folhas em florestas de igapó do rio Negro / Fine fuel load and leaf decomposition in Rio Negro floodplain forests
In years of low rainfall, fires have occurred in Amazonian black-water floodplain forests, including the Middle Rio Negro. The fires are documented from satellite images. Forest fires require ignition sources, fuel and dry weather. To understand the susceptibility of these forests to fire we investigated the stock of fine fuel on the ground at 29 sites in bl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/10/2012
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17. Estudo das características estruturais e das propriedades funcionais do amido de sementes de jaca (Artocarpushete-rophylusLam) variedades mole e dura.
Starch is a polysaccharide used as a source of carbohydrates in the human diet, with wide application in food industry, textile and pharmaceutical industries. The search for new sources starch is growing, causing the production sector is seeking new technologies, as well as natural starches with different chemical and physical characteristics. The objective
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/09/2012
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18. Production of bioemulsifiers by Yarrowia lipolytica in sea water using diesel oil as the carbon source
The objective of this work was to investigate, on a flask scale, the production of bioemulsifiers by Yarrowia lipolytica in the presence of sea water, supplemented with nitrogen and phosphate sources, using diesel oil as substrate. A full 2(4) factorial design was conducted to investigate the effects and interactions of the nutrient concentrations (diesel oi
Brazilian Journal of Chemical Engineering. Publicado em: 2012-03
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19. Biosurfactants production by yeasts using soybean oil and glycerol as low cost substrate
Biosurfactants are bioactive agents that can be produced by many different microorganisms. Among those, special attention is given to yeasts, since they can produce many types of biosurfactants in large scale, using several kinds of substrates, justifying its use for industrial production of those products. For this production to be economically viable, the
Brazilian Journal of Microbiology. Publicado em: 2012-03
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20. Chlorophenols in tap water from wells and surface sources in Rio de Janeiro, Brazil: method validation and analysis
Two analytical methods were validated for determination of trichlorophenols, tetrachlorophenols and pentachlorophenol in drinking water. Limits of quantification were at least ten times lower than maximum permissible levels set by the Brazilian legislation, which are 200 ng mL-1 for 2,4,6-trichlorophenol and 9 ng mL-1 for pentachlorophenol. Chlorophenol leve
Química Nova. Publicado em: 2012
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21. APROVEITAMENTO DE FONTES ALTERNATIVAS PARA REDUÇÃO DO CONSUMO DE ENERGIA ELÉTRICA E REFLEXOS NOS SEUS CUSTOS / UTILIZATION OF ALTERNATIVE SOURCES FOR REDUCING POWER CONSUMPTION AND ITS CONSEQUENCES IN COSTS
Residential consumption accounts for around one third of total energy consumed in Brazil. The electric shower is the main component of this consumption, along with air conditioning. Hence, much research has been conducted in order to reduce the consumption of this sector and the use of alternative energy sources. Among these include mainly solar and geotherm
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/09/2011
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22. AVALIAÇÃO DOS FATORES SÓCIOECONÔMICOS, AMBIENTAIS E IMUNOLÓGICOS ASSOCIADOS À PATOGÊNESE DA ESQUISTOSSOMOSE MANSÔNICA NA ÁREA ENDÊMICA DE ILHA DAS FLORES, SERGIPE. / EVALUATION OF SOCIOECONOMIC FACTORS, ENVIRONMENTAL AND IMMUNOLOGICAL FACTORS ASSOCIATED WITH THE PATHOGENESIS OF SCHISTOSOMIASIS MANSONI IN THE ENDEMIC AREA ISLAND OF FLOWERS, SERGIPE.
Schistosomiasis is an important endemic disease worldwide, affecting over 200 million people. The city of Flores Island, Sergipe, is situated 135 km from the capital, North of the State and has 8,598 inhabitants. Has an extensive irrigation area, where there are many species of snails Biomphalaria glabrata and Biomphalaria straminea. The objectives were to e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/06/2011
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23. RemoÃÃo de BTEX em SoluÃÃo Aquosa por AdsorÃÃo usando ZeÃlita SintÃtica Modificada. / Removal of BTEX in aqueous solution by adsorption using synthetic zeolite modified.
BTEX (benzene, toluene, ethylbenzene and xylenes) are organic compounds of particular concern due to their toxicity. BTEX occur in the environment as products of incomplete oxidation of fossil fuels, thus polluting the atmosphere. Also, the disposal of industrial effluents, oil spills, and fuels leaks at gas stations are sources of BTEX contamination in soil
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2011
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24. A dinâmica do fitoplâncton em uma várzea Amazônica variações sazonal e nictimeral (Várzea do Lago Grande de Curuai Pará, Brasil) / The dynamics of phytoplankton in an Amazon fllodplain - seasonal and nictemeral variations (Lago Grande de Curuai - Pará, Brasil)
The river-floodplain systems are environments submitted a lateral overflow of river channel due the rains and/or underground waters. They are controlled by the type of climate, morphology and local effects. The lowland lakes are also highly productive because of the rich sources of primary carbon. The sediments transport and suspended and dissolved matter ar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2011