Indicator Microorganisms
Mostrando 25-36 de 74 artigos, teses e dissertações.
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25. Investigação da toxicidade, tratabilidade e formação de subprodutos tóxicos em efluentes clorados de lagoas de estabilização com e sem pós-tratamento. / Investigation of toxicity, treatability and toxic disinfection by-products formation in chlorinated stabilization ponds effluents with and without post-treatment.
The main difficulties that the stabilization ponds for sewage treatment systems face to meet the requirements imposed by CONAMA Resolution 357/2005 can highlight the high concentrations of ammonia nitrogen, phosphorus and fecal and total coliform. When the systems use receivers water bodies Class 2 or 3 generate the need for disinfection. Among the different
Publicado em: 2008
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26. Efeito da redução de temperatura de carcaças de frango na multiplicação de microorganismos
O presente trabalho teve como objetivo avaliar o tempo necessário para que carcaças de frango de diferentes pesos (1.200 g e 2.100g), que ao sair do tanque de resfriamento se encontravam com a temperatura acima de 7ºC, alcançassem 4°C e traçar o perfil microbiológico destas, realizado através do estudo de presença e multiplicação dos indicadores:
Publicado em: 2008
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27. Association among early childhood caries, microbiological composition of dental biofilm, diet, oral hygiene and socioeconomic factors in preschoolers aging 36 to 48 months / Associação entre carie precoce da infancia, composição microbiologica do filme dentario, dieta, higiene bucal e fatores socio-economicos em pre-escolares de 36 a 48 meses
The prevalence of early childhood caries (ECC) in Brazil is high and its severity increases with age. This way, sensitive methods for the early caries diagnosis and risk indicators identification are important for the disease control. This thesis, comprised by three manuscripts, aimed: (1) to undertake a systematic review of studies which have evidenced the
Publicado em: 2008
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28. 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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29. Ozonização de esgoto sanitário: estudo da hidrodinâmica, transferência de massa e inativação de microrganismos indicadores / Domestic sanitary sewer: study of hydrodynamics, mass transfer and microrganisms indicator inativation
Esta pesquisa teve como objetivo estudar a hidrodinâmica, a transferência de massa e a inativação de microrganismos indicadores durante o processo de ozonização de esgoto sanitário tratado previamente em reator UASB. A pesquisa foi dividida em três grupos de ensaios, experimentos I, II e III, nos quais foram medidas as concentrações de bolhas de oz
Publicado em: 2007
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30. CARACTERIZAÇÃO DE FATORES DE VIRULÊNCIA EM AMOSTRAS DE Escherichia coli ISOLADAS DE LAGOAS DO PARQUE ESTADUAL DO RIO DOCE, MINAS GERAIS OURO PRETO 2006
The fecal coliforms whose main representative is the Escherichia coli belong to the intestinal flora of humans and other warm-blooded animals, these microorganisms have been extensively used at water quality control and when found at water are an indicator of recent contamination by feces, and as consequence, enteric pathogenic microorganisms are made presen
Publicado em: 2006
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31. Estudo da esterilização por plasma de acoplamento indutivo e análise comparativa com esterilização por óxido de etileno / Study of sterilization by Inductively coupled plasma and comparison with sterilization by ethilene oxyde
The gas Plasma sterilization technology has been emerging as an alternative to conventional low temperature processes since the advent of new therapies using heat sensitive materials in the healthcare field is greater than ever. The gas Plasma mechanism of action includes the generation of actives species by an electrical discharge, which is able to promote
Publicado em: 2006
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32. Sterols and fecal indicator microorganisms in sediments from Admiralty Bay, Antarctica
Amostras de sedimento, coletadas nas proximidades da saída de esgoto da Estação Antártica Comandante Ferraz (Brasil), Antártica, foram medidos durante o verão de 1999/2000. As concentrações de esteróis totais e coprostanol variaram entre 0,09 e 19,6 ¼g.g-1 e < 0,01 e 14,0 ¼g.g-1 de sedimento seco. Nossas análises mostraram que apenas os pontos lo
Brazilian Journal of Oceanography. Publicado em: 2005-06
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33. Resistencia a antimicrobianos em cepas de Salmonella spp, Escherichia coli e Enterococcus spp isoladas de carcaças de frango
Chicken carcasses can act as a vehicle for pathogenic bacteria to human being, particularly for salmonellas. Food poisoning in humans from this source has become more frequent, the seriousness being directly related to the drug resistance profile of the organisms. The indiscriminate use of antibiotics in poultry therapeutics and in poultry feed as growth pro
Publicado em: 2004
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34. Gerenciamento de residuos hospitalares e avaliação da secagem como metodo de redução de volume e grau de periculosidade
In this work infectious healthcare waste (IHW) produced in a blood bank facility was investigated. Aspects of IHW such as production, internal handling, physical and microbiological characterization as well as evaluation of a drying process for volume and microbiological load reduction were studied, using surrogate IHW and indicator microorganism for effecti
Publicado em: 2003
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35. Agar media that indicate acid production from sorbitol by oral microorganisms.
Two varieties of agar medium (Trypticase [BBL Microbiology Systems]-serum-sorbitol-bromcresol purple agar [TSSB] and Trypticase-blood-sorbitol-CaCO3 agar [TBSCa]) indicating microbial acid production from sorbitol were tested. The media were devised for use in studies on the prevalence of sorbitol-fermenting human oral microorganisms incubated in an anaerobi
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36. Generalized indicator plate for genetic, metabolic, and taxonomic studies with microorganisms.
We have developed an indicator plate that works well for diverse types of substrates and microorganisms. The plates are inexpensive and easy to prepare. The essential components are agar, buffer, growth-supporting nutrients, a test substrate, and 2,3,5-triphenyl tetrazolium chloride (TTC). Using various strains of Salmonella typhimurium and Escherichia coli,