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Assessment of the origin of microbiological contamination of groundwater at a rural watershed in Chile Agrociencia
Valenzuela,Mariela; Mondaca,María A.; Claret,Marcelino; Pérez,Claudio; Lagos,Bernardo; Parra,Oscar.
In a rural watershed in Chile, the scarce groundwater available represents almost the only water source both for agriculture and domestic use. This water has microbiological quality problems, which result in an agricultural and local economic development constraint. Contamination can come from punctual or diffuse sources. Characterizing the microbiological quality of groundwater allows both to identify sources from the point of view of whether they are point or non point -thus facilitating their reduction or elimination- and to determine health hazards likely to affect the population in the area under study. This study aimed to improve the state of knowledge on the microbiological quality of groundwater at a rural watershed. Forty two wells were seasonally...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fecal coliforms; Fecal streptococci; Groundwater; Microbiological contamination; Total coliforms.
Ano: 2009 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000400010
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Efeito da irradiação ultravioleta C no controle de Aspergillus flavus link da castanha-do-brasil. Repositório Alice
KONDA, E. T.; CARTAXO, C. B. da C.; SOUZA, C. S. M.; ESCHIONATO, R. A.; TERAO, D..
A castanha-do-brasil, produto do extrativismo vegetal não madeireiro, importante para a economia e exportação nacional, tem apresentado alta taxa de contaminação por fungos toxigênicos, em especial o Aspergillus flavus, que sintetiza a aflatoxina, apresentando potencial carcinogênico. Este trabalho teve como objetivo avaliar o controle de A. flavus e de outros contaminantes bacterianos e bolores em castanha-do-brasil pelo uso da irradiação ultravioleta C (UVC). Foram realizados dois experimentos, sendo que no primeiro avaliou-se a eficiência da irradiação UVC no controle de contaminantes naturais presentes em castanhas in natura, sem ter passado por nenhum tratamento pós-colheita, enquanto que no segundo experimento as castanhas passaram por uma...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: UVC; Contaminação microbiana; Controle alternativo; UVC; Microbiological contamination; Castanha do Brasil; Aflatoxina; Controle físico; Raio ultravioleta; Bertholletia excelsa; Aflatoxins; Physical control; Ultraviolet radiation.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084356
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Surveillance du milieu marin et protection santiaire des coquillages ArchiMer
Renault, Tristan.
Shellfish farming is a major economic activity in the European Union, France being one of the main producing countries. Regulations were introduced to meet society's current expectations in terms of food safety at the fishing, farming and harvesting stages, as weil as during processing and marketing. Toxic algae, pathogens or pollutants may contaminate shellfish products during production and harvesting, partly because of the particular environ mental conditions in which these animais are grown. Monitoring programmes were thus deve/oped to detect the presence of biological and chemical contaminants in coastal waters and in shellfish, and to monitor the food safety of the latter.
Tipo: Text Palavras-chave: Pollutants; Microbiological contamination; Toxic algae; Shellfish; Marine environment; Programmees; Monitoring; Polluants; Contamination microbiologique; Algues toxiques; Coquillages; Milieu marin; Réseaux; Surveillance.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6932.pdf
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Why, how, and how far should microbiological contamination in a coastal zone be mitigated? An application of the systems approach to the Thau lagoon (France) ArchiMer
Mongruel, Remi; Vanhoutte-brunier, Alice; Fiandrino, Annie; Valette, Francois; Balle-beganton, Johanna; Perez Agundez, José A.; Gallai, Nicola; Derolez, Valerie; Roussel, Sebastien; Lample, Michel; Laugier, Thierry.
This paper describes the building of an integrated simulation tool based on a systems approach, and its contribution to local political discussion of the mitigation of microbiological contamination of the water in a coastal area. Local management schemes view water quality as a high-priority environmental objective. In practice, how far this objective is achieved depends on trade-offs between the costs of improved water treatment facilities and the acceptable impacts of water contamination. An in-the-field experiment in collaboration with local managers was carried out in the Thau lagoon on the French Mediterranean coast during the SPICOSA (Science and Policy Integration for Coastal System Assessment) project, from 2007 through 2011. It consisted of...
Tipo: Text Palavras-chave: Systems modeling; Integrated assessment; Microbiological contamination; Technical options; Strategic planning.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00136/24775/22959.pdf
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