Fine Sediment
Mostrando 25-36 de 37 artigos, teses e dissertações.
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25. RelaÃÃes entre a dinÃmica costeira e a meiofauna dos sedimentos praiais do litoral da Ilha de Itamaracà - PE / Relations between the coastal dynamics and meiofauna of the praiais sediments of the coast of the Island of Itamaracà - PE
The studied area is comprised of The Forte Orange, SÃo Paulo, Forno da Cal, Pilar, Jaguaribe and Sossego in Itamaracà Island. The study aimed to know the relationship between shore dynamic agents and the sediment interstitial fauna. Monthly collections of interstitial fauna were carried out between November 2003 and October 2004. The samples of the interst
Publicado em: 2005
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26. Dinâmica Costeira dos Campos petrolíferos Macau/Serra, litoral setentrional do Estado do Rio Grande do Norte
This thesis describes the general behavior of the northern shore of the State of Rio Grande do Norte relating beach profile morphology with hydrodynamic and sedimentological parameters. The Macau and Serra Oil Field are inserted on this area and are under accelerated coastal erosion. At these oil fields are installed oil wells from PETROBRAS, nowadays locate
Publicado em: 2005
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27. Moluscos dos substratos inconsolidados do mediolitoral do estuÃrio do Rio JaboatÃo, Pernambuco - Brasil
Estuaries are high productivity ecosystems and very important to consumers of different throphic levels. In general, estuaries are under strong anthropogenic influence affecting the residents species. The JaboatÃo River is very important to the city of same name and also to other cities including Recife, as many families are dependent upon the fisheries, in
Publicado em: 2004
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28. CaracterizaÃÃo limnolÃgica do Lagamar do CauÃpe-planÃcie costeira do municÃpio de Caucaia-Ce / Limnological characterization of "lagamar do cauipe"- a coast plain in Caucaia town,CearÃ,Brazil
Limnological research is very scarce in tropical areas, particularly if we consider that of long duration. This research was carried out at the âLagamar do CauÃpeâ (a coast plain in Caucaia town, CearÃ, Brazil, during the period from June, 2001 to February, 2002, aiming at making a diagnosis about the physical, chemical and environmental characteristics
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/08/2003
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29. Macrofauna de substratos inconsolidados da zona entre-mares em duas localidades do canal de santa cruz (forte orange e itapissuma) Pernambuco, Brasil. 01/08/2002
In May of 2001 (corresponding to the rainy period), 60 sediment samples were collected inside two areas of 100 m2 size located in the intertidal zone of the Santa Cruz Channel (Forte Orange and Itapissuma), Pernambuco state, Brazil. A PVC tube with 10 cm of diameter and 25 cm of length was buried in the sediment for the collection of the macrofauna and of th
Publicado em: 2002
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30. Survival of Escherichia coli in lake bottom sediment.
The survival of Escherichia coli in bottom sediment (Lake Onalaska, navigation pool no. 7, Mississippi River) was studied by using in situ dialysis culture of sterile (autoclaved) and unsterile sediment samples. Bags made from dialysis tubing were filled with either course sand sediment (28.8% fine) or organic, silty clay sediment (77.2% fine) and placed at
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31. Role of algal eukaryotes in subtidal columnar stromatolite formation
Columnar stromatolites were abundant and widespread in the Proterozoic but are exceedingly rare in modern seas. Consequently, the stromatolites at Hamelin Pool in Shark Bay, Western Australia, have been widely interpreted as unique modern analogs of ancient stromatolites constructed by complex communities of cyanobacteria. However, the Shark Bay columnar str
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32. Extraction of Clostridium perfringens spores from bottom sediment samples.
Two extraction-separation procedures were developed and evaluated for use in conjunction with the mCP membrane filter method for the enumeration of Clostridium perfringens spores in bottom sediments. In the more facile of the two procedures, a distilled-water suspension of the sediment sample is pulse sonicated for 10 s and allowed to settle. Portions of the
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33. Determination of Abundance and Biovolume of Bacteria in Sediments by Dual Staining with 4′,6-Diamidino-2-Phenylindole and Acridine Orange: Relationship to Dispersion Treatment and Sediment Characteristics
We measured the abundance and biovolume of bacteria in intertidal sediments from Tokyo Bay, Japan, by using a dual-staining technique (4′,6-diamidino-2-phenylindole and acridine orange) and several dispersion techniques (ultrasonic cleaner, ultrasonic sonicator, and tissue homogenizer). Dual staining reduced serious background fluorescence, particularly wh
American Society for Microbiology.
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34. Microbial Communities Associated with Geological Horizons in Coastal Subseafloor Sediments from the Sea of Okhotsk
Microbial communities from a subseafloor sediment core from the southwestern Sea of Okhotsk were evaluated by performing both cultivation-dependent and cultivation-independent (molecular) analyses. The core, which extended 58.1 m below the seafloor, was composed of pelagic clays with several volcanic ash layers containing fine pumice grains. Direct cell coun
American Society for Microbiology.
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35. Microstructural Characterization of Cyanobacterial Mats from the McMurdo Ice Shelf, Antarctica
The three-dimensional structures of two types of cyanobacterium-dominated microbial mats from meltwater ponds on the McMurdo Ice Shelf were as determined by using a broad suite of complementary techniques, including optical and fluorescence microscopy, confocal scanning laser microscopy, scanning electron microscopy with back-scattered electron-imaging mode,
American Society for Microbiology.
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36. Mineral Precipitation by Epilithic Biofilms in the Speed River, Ontario, Canada
Epilithic microbial communities, ubiquitously found in biofilms on submerged granite, limestone, and sandstone, as well as on the concrete support pillars of bridges, were examined in the Speed River, Ontario, Canada. Transmission electron microscopy showed that attached bacteria (on all substrata) were highly mineralized, ranging from Fe-rich capsular mater