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| Gaylarde,Peter M.; Gaylarde,Christine C.. |
| Algae and cyanobacteria disfigure the external surfaces of buildings and may cause their physico-chemical deterioration. Even though the climate in Brazil is humid, there is no published literature on this problem. The objective of this work was to identify the major phototrophs present on Brazilian constructions in residential, urban and rural sites. The algal and cyanobacterial types present on discolored surfaces of painted buildings in nine different municipalities in Brazil, all lying between latitudes 19° South and 30° South, were examined. A total of 816 different organisms was detected in 58 sites. Approximately 63% were single-celled or colonial organisms. The cyanobacterial genus, Synechocystis, was the most biodiverse and frequently comprised... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Algae; Biodeterioration; Brazil; Cyanobacteria; Paint films. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300005 |
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| Gaylarde,Christine C.; Bento,Fátima M.; Kelley,Joan. |
| The major microbial problem in the petroleum refining industry is contamination of stored products, which can lead to loss of product quality, formation of sludge and deterioration of pipework and storage tanks, both in the refinery and at the end-user. Three major classes of fuel are discussed in this article - gasoline, aviation kerosene and diesel, corresponding to increasingly heavy petroleum fractions. The fuel that presents the most serious microbiological problems is diesel. The many microorganisms that have been isolated from hydrocarbon fuel systems are listed. The conditions required for microbial growth and the methods used to monitor and to control this activity are discussed. The effects of various fuel additives, including biocides, are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biocides; Biofilms; Hydrocarbon fuels; Microbial corrosion; Storage tanks. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000100001 |
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