Coliphages
Mostrando 1-12 de 120 artigos, teses e dissertações.
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1. Avaliação da utilização de colifagos como indicadores virais a partir da análise de enterovírus e adenovírus em efluentes tratados por diferentes processos biológicos
Domestic sewage contains a high amount of bacteria and other pathogens and non pathogens that are discharged into water bodies. Contamination of water by the presence of pathogenic bacteria and viruses, brings undesirable consequences, especially for public health. The objective of this work was to evaluate the possibility of using analysis of coliphages as
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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2. Frequência e diversidade de colifagos somáticos isolados de amostras de água do mar, plâncton e bivalves da baixada santista, canal de São Sebastião e Ubatuba. / Frequency and diversity of somatic coliphages isolated from seawater, plankton and bivalves samples from baixada Santista, Canal de São Sebastião e Ubatuba.
The somatic coliphages (SC) are the better indicator for fecal pollution. In this research, it was obtained the SC abundance in seawater, plankton and bivalves samples collected from Santos, São Sebastiâo and Ubatuba. SC counts were correlated with marine viable bacteria, thermotolerant coliforms, E. coli and intestinal enterococci, and the correlation was
Publicado em: 2009
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3. Ballast water: a review of the impact on the world public health
Since the nineteenth century ships have been using ballast water (BW) for safety, stability, propulsion and maneuverability, as well as to redress loss of fuel weight and water consumption, and to maintain structural stress at acceptable levels. Ballast water has been spreading many non-native species around the globe, but little is known about the extent an
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2008
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4. UV radiation application for sewer disinfection of the UASB reactor association with aerated submerged biofilter (ASB) / Aplicação de radiação UV para desinfecção de efluente da associação de reator UASB e biofiltro aerado submerso
This research has investigated and interpreted relevant aspects of disinfection by ultraviolet radiation (UVR) in the inativation of indicator microorganismsinactivation. The sanitary effluent was provided by anaerobic treatment (UASB reactor), followed by aerated submerged biofilter (ASB), on a real scale. This research was divided into two stages, whereas
Publicado em: 2007
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5. Avaliação de métodos para desinfecção de água, empregando cloro, ácido peracético, ozônio e o processo de desinfecção combinado ozônio/cloro / Methods evaluation for water disinfection using chlorine, peracetic acid, ozone and the ozone/chlorine combined disinfection process
This is the result of a comparative disinfection study, performed in similar experimental conditions, among hypochlorite of sodium, peracetic acid, ozone and the ozone/chlorine sequential disinfection process for waters of study with low color (<5 uH) and high color (>100 uH) features. The disinfectants performance was evaluated according to the inactivation
Publicado em: 2006
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6. Avaliação da microfiltração tangencial como alternativa de tratamento avançado de efluente gerado em sistema de tratamento de esgoto sanitário constituído de reator UASB (Upflow Anaerobic Sludge Blanket) seguido de tanque de aeração / The evaluation of crossflow microfiltration as an alternative for advanced treatment of effluent generated in a system of sewage treatment composed by a UASB (Upflow Anaerobic Sludge Blanket) reactor followed by an aeration tank
The proposal of this research was to evaluate the crossflow microfiltration as an alternative for an advanced treatment of effluent generated in a system of sewage treatment composed by a UASB (Upflow Anaerobic Sludge Blanket) reactor followed by an aeration tank. This work aimed to evaluate the membranes physical cleaning methods (backwashing with compresse
Publicado em: 2006
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7. Inactivation of pathogens tracers in combined systems for sanitary sewer treatment and pre-disinfection / Inativação de indicadores patogênicos em sistemas combinados de tratamento e pré-desinfecção de esgoto sanitário
A proposta apresentada se baseia na introdução de um estágio intermediário de desinfecção previamento ao tratamento biológico visando intensificar os efeitos do estágio seguinte destinado à desinfecção convencional. Para estudo de caso foram aplicadas as técnicas de ozonização e radiação UV combinadas em instalações piloto que simulam duas
Publicado em: 2006
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8. Ti O IND.2 heterogeneous photocatalysis in secondary wastewater treatment / Fotocatálise heterogênea com Ti O IND.2 aplicada ao tratamento de esgoto sanitário secundário
The heterogeneous photocatalysis with Ti O IND.2 and solar radiation in secondary wastewater treatment to remove organic matter and microorganisms was investigated. A glass plate (approximate 0.48 M POT.2 ) with immobilized titanium dioxide (10 g/ M POT.2 ) was operated in different flow rates (15; 22.5 and 30 L/h) and angles in relation to horizontal (2, 12
Publicado em: 2005
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9. Photocatalytic inactivation of Clostridium perfringens and coliphages in water
This study presents results of the photocatalytic inactivation of two groups of microorganisms: spores of the anaerobic bacterium Clostridium perfringens and coliphage. A cylindrical reactor impregnated with titanium dioxide and irradiated with ultraviolet light (15 W) was used. Parameters such as color, turbidity, hydraulic detention time (HDT) and initial
Brazilian Journal of Chemical Engineering. Publicado em: 2003-10
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10. Evaluation of F+ RNA and DNA Coliphages as Source-Specific Indicators of Fecal Contamination in Surface Waters
Male-specific (F+) coliphages have been investigated as viral indicators of fecal contamination that may provide source-specific information for impacted environmental waters. This study examined the presence and proportions of the different subgroups of F+ coliphages in a variety of fecal wastes and surface waters with well-defined potential waste impacts.
American Society for Microbiology.
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11. Coliphages as indicators of enteroviruses.
Coliphages were monitored in conjunction with indicator bacteria and enteroviruses in a drinking-water plant modified to reduce trihalomethane production. Coliphages could be detected in the source water by direct inoculation, and sufficient coliphages were detected in enterovirus concentrates to permit following the coliphage levels through different water
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12. Evaluation of coliphage detection as a rapid indicator of water quality.
A rapid coliphage analysis technique for enumerating coliphages in natural waters has been evaluated by water quality laboratories located throughout the United States. Correlations were established between coliphages and coliforms in natural water systems. These correlations were highly significant. This relationship can thus be used to determine the number