224 resultados para Desinfecção
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Reabilitação Oral - FOAR
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Processo eletrolìtico em desinfecção de águas de abastecimento e/ou residuárias utilizando eletrodos de carbono e/ou carbono de Ti/TiRuO2 que utiliza eletrodos de carbono e/ou carbono e Ti/TiRuO2, visando a redução da concentração ou remoção de microrganismos, presentes na água, de abastecimento ou residuária, potencialmente patogênicos ou prejudiciais à saúde pública, ao ambiente ou a um processo industrial.
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Descrito como o presente Privilégio de Invenção, refere-se a um processo que possibilita a desinfecção do substrato de fermentação, sem adição de agentes tóxicos, de modo a garantir a compatibilidade ambiental da atividade alcooleira, para tanto, a presente invenção garante a desinfecção do substrato de fermentação eliminando as bactérias, que são nocivas ao processo e, preservando as leveduras, além do mesmo ser ambientalmente compatível, pois não deixa resíduos nem necessita a adição de substâncias químicas e, os agentes biocidas, comumente utilizados no controle de contaminações dos processos de fermentação, são dispensados nesse tratamento, sendo usados eletrodos de carbono para tal tarefa.
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OBJECTIVE: To verify the existence of fungal contamination prior to and following the cleaning and disinfection process of hospital mattresses used by patients with Candidemia. METHODS: Cross-sectional study analyzing 25 mattresses used by patients with Candidemia confirmed by blood culture from different hospital wards. The study made use of convenience samples. After growing the samples in an Agar Sabouraud Dextrose environment, isolated yeasts were identified by macroscopic, microscopic and physiologic characteristics. RESULTS: Analyses showed 15 (60%) mattresses contaminated by Candida spp. From these, 10 (66.7%) and five (33.3%) mattresses corresponded respectively to the collection prior to and following disinfection, with Candida parapsilosis being the isolated species with the highest frequency. CONCLUSION: Considering that half of the mattresses remained contaminated after cleaning and disinfection, there is a risk that these mattresses may act as potential secondary reservoirs in the infection chain.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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The dental trade has offered dental impression and dental stone for orthodontic use ensuring accurate models. The compatibility between these materials is defined by the wetting of the model surfaces by the mixture water/stone poured over it and the influenced by the method of disinfection of model and disinfectant solution used. It was evaluated the influence of spray disinfection with sodium hypochlorite 1% on the wettability of two commercial alginate (Jeltrate ® - Dentsply and Orthoprint ® - Zhermack) at two commercial type III gypsum (Rio ® - ME and AOBussoli Orthogesso Orthogesso ®-SA). Twenty models were fabricated for each type of alginate, which were divided into two groups (water and sodium hypochlorite), receiving respectively water and sodium hypochlorite 1% spray. Each group of models was then further divided into two subgroups, and on their surface were poured 2 ml of type III gypsum (Gesso Rio® or Orthogesso®). Reached the final setting of the gypsum specimens were sectioned vertically and medially, settled water with sandpaper No. 400 and mounted on suitable device for reading (in the right and left) of the contact angle Carl Zeiss microscope (precision, 001). The results were submitted to ANOVA and founded statistical significance for solutions used. It was concluded that sodium hypochlorite spray improved wettability of alginates studied.
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The cares at the manipulation of the alginate (condensation, disinfection of the impression and the time elapsed until the leak of the plaster) deserve special attention considering the great amount of distortions occurring every time the impression is not fill of plaster in a brief space of time and appropriate storage conditions. Besides its adaptation to the plaster suffers influence of the events happened after the impression is removed of the mouth. The purpose of this research was to evaluate the wetting capacity of three brands of alginate (Jeltrate™,Hydrogum™ e Orthoprint™) by the plaster type III (Rio™) under the influence of disinfection by sodium hypochlorite 1% sprays and the time of storage of 15 minutes,30 minutes, 1 hour, 6, 12 and 24 hours. There were made 60 impressions of each brand of alginate divided in two groups (water and sodium hypochlorite 1%) rearranged after the application of the sodium hypochlorite spray according to the storage time (15 or 30 minutes and 1,6,12, or 24 hours). On the surface of the impressions 2ml of plaster were flowed, proportioned and condensed in agreement with manufacturer‘s instructions. After the final setting expansion the casts were sectioned vertically and medially, regularized at the cut surface (emery paper 400) and setted for reading the contact angle at the microscope Carl Zeiss. The obtained results, submitted to statistical treatment (ANOVA) revealed significant differences when compared the employed solutions (water and sodium hypochlorite 1%) and the time of storage. The sodium hypochlorite 1% exhibited the smallest contact angles and the times of storage of 15 minutes and 6 hours the smallest and larger angles, respectively. It can be concluded that the alginate impressions exhibited larger adaptation to the plaster when disinfected by hypochlorite of sodium 1% and stocked by 15 minutes.
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Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA
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Pós-graduação em Química - IQ
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Estudo experimental laboratorial que comparou a ação de cinco métodos de desinfecção na remoção de biofilme em endoscópios gastrintestinais. Foram utilizados como corpos de prova tubos novos transparentes de politetrafluoretileno (Teflon®) simulando os canais flexíveis dos endoscópios. Após limpeza prévia os tubos foram contaminados intencionalmente com Pseudomonas aeruginosa para formação de biofilme e submetidos à desinfecção. Como resultado, nenhum deles removeu 100% dos biofilmes. O que mais removeu fisicamente o biofilme foi o glutaraldeído 2% em processadora automática, provavelmente justificado pela dupla limpeza, já que o equipamento conta com essa fase no início do seu ciclo. O método que se mostrou menos eficiente para remoção de biofilme e outros resíduos foi água eletrolítica ácida. Esses resultados sugerem que a limpeza é mais impactante na remoção de biofilmes do que a desinfecção consecutiva, uma vez que o glutaraldeído, desinfetante da máquina que se mostrou mais eficiente, é um fixador de resíduos orgânicos.