Environmental Microbiology
Mostrando 13-24 de 50 artigos, teses e dissertações.
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13. Environmental and agricultural use of tannery sludge in soil / Avaliação ambiental e agronômica do uso de lodo de curtume no solo
Devido ao seu elevado teor de nutrientes e potencial de neutralização da acidez do solo, a utilização de lodos de curtume em áreas agrícolas tem sido uma alternativa para disposição e reciclagem desses resíduos. Por outro lado, o aumento do pH e do teor de nitrogênio amoniacal no solo, quando da aplicação superficial do lodo de curtume, podem fav
Publicado em: 2009
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14. ISOLAMENTO DE Cryptococcus neoformans (SANFELICE) VUILLEMIN (1901) DE Periplaneta americana (LINNEU, 1758) RECOLHIDAS DE AMBIENTES PÚBLICOS. / ISOLATION OF Cryptococcus neoformans (SANFELICE) VUILLEMIN (1901) OF Periplaneta americana (LINNEU, 1758) COLLECTED IN PUBLIC PLACES.
The objective of this paper was determined the presence of Cryptococcus neoformans in cockroach (Periplaneta americana) collected in public places. The motivation for this research was based on the fact that this species of cockroach is synanthropic and vehicle of several pathogenic agents for man and animals. The insect were collected already dead and also
Publicado em: 2008
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15. Detecção simultânea de Salmonella spp. e Salmonella enteritidis em carcaças de frango por reação em cadeia da polimerase
An increase in human salmonellosis caused by serovar Enteritidis related to consumption of poultry products was observed worldwide in the last years. Safety measures have been adopted to control this serovar. The implementation of Hazard Analysis and Critical Control Points (HACCP) System was not able to eliminate the problem although it has considerably red
Publicado em: 2008
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16. Management of solid waste generated in laboratory analyses in the city of Ribeirão Preto - SP, 2007: a case study / Gerenciamento de resíduos sólidos gerados em laboratório de análises clínicas na cidade de Ribeirão Preto - SP, 2007: um estudo de caso
World population has been growth disorderly; increasing industrialization; excessive consumerism, and, consequently, increasing the waste generation as well as the negative impacts on the environment and human health. In this context, the environmental problematic includes the production of hazardous waste and, among these, the waste of health services - RSS
Publicado em: 2008
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17. USO DA SOLARIZAÃÃO NA REDUÃÃO DE MICRORGANISMOS PATOGÃNICOS EM EFLUENTES DOMÃSTICO
Solarization is an alternative method for disinfection of wastewater, therefore the joint action of the solar rays and the temperature tends to inhibit the growth of microorganisms. The objective of this research is to verify the effectiveness of the method for the reduction of pathogenic microorganisms in domestic effluent samples. The experiment was develo
Publicado em: 2007
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18. AvaliaÃÃo da influÃncia da composiÃÃo de resÃduos sÃlidos urbanos no comportamento de aterros simulados
O desenvolvimento de pesquisas, envolvendo aterros em escala real, apresenta alguns inconvenientes, como: custo elevado, grande nÃmero de variÃveis envolvidas no processo e a dinÃmica de operaÃÃo do aterro, que dificulta a obtenÃÃo sistemÃtica de dados sob condiÃÃes conhecidas ou controladas. Sendo assim, cÃlulas experimentais de pequenas dimensÃ
Publicado em: 2007
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19. Caracterização da diversidade de estirpes de Bradyrhibium japonicum e B. elkanii estabelecidas por inoculação em solos do Cerrados, isoladas de nódulos de soja
The plasticity of rhizobial genomes is far greater than previously thought, with complex genomic recombination events that may be accelerated by the often-stressful environmental conditions of the tropics. This study aimed at evaluating changes in soybean rhizobia due to adaptation to inhospitable environmental conditions (high temperatures, drought and acid
Publicado em: 2006
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20. Air desinfection in restricted environments by combining action of titanium and ultraviolet light (TiO2/UV) / Desinfecção do ar em ambientes confinados pela ação combinada de dioxido de titanio e luz ultravioleta (TiO2/UV)
The populational growth and development of new technologies and equipments to improve quality of life can many times contribute to an increase of polluent agents and the proliferation of pathogenic ones. Respiratory-tract diseases in Brazil have been an important cause of concern and hospitable internations. Several biochemical processes are under research a
Publicado em: 2006
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21. Estudo da atividade gelatinolítica em amostras clínicas de Enterococcus faecalis
Gelatinase is a potential virulence factor in Enterococci which are opportunistic pathogens that cause various types of infections in humans. The production of gelatinase was studied in 95 Enterococcus faecalis strains isolated from different types of clinical sources. Various environmental parameters including culture medium, temperature, pH, divalent catio
Publicado em: 2005
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22. Rastreamento de Listeria monocytogenes em industrias processadoras de queijo frescal tipo latino, nos Estados Unidos da America, empregando a subtipagem molecular . / Tracking of would listeria monocytogenes in processing industries of frescal cheese Latin type, in the United States of America, using the molecular subtipagem.
Latin-style fresh cheeses, which have been linked to at least two human listeriosis outbreaks in the US, are considered to be high risk foods for Listeria monocytogenes contamination. We evaluated L. monocytogenes contamination patterns in three Latin-style fresh cheese processing plants to gain a better understanding of L. monocytogenes contamination source
Publicado em: 2004
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23. An assessment of environmental contamination arising from the use of some automated equipment in microbiology.
The generation of aerosols and the contamination of surfaces arising from some equipment used to automate tasks in the microbiology laboratory have been assessed using a microbiological test method. When used for the designed purposes none of the equipment is likely to present any significant aerosol hazard. Some of the equipment gave rise to surface contami
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24. Contamination of the Clinical Microbiology Laboratory with Vancomycin-Resistant Enterococci and Multidrug- Resistant Enterobacteriaceae: Implications for Hospital and Laboratory Workers
We surveyed environmental surfaces in our clinical microbiology laboratory to determine the prevalence of vancomycin-resistant enterococci (VRE) and multidrug-resistant Enterobacteriaceae (MDRE) during a routine working day. From a total of 193 surfaces, VRE were present on 20 (10%) and MDRE were present on 4 (2%) of the surfaces tested. In a subsequent surv
American Society for Microbiology.