Water Contaminations
Mostrando 13-18 de 18 artigos, teses e dissertações.
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13. Changes in the paradigms for the use and occupation of the soil with a view to the necessary protection of the quality of groundwater / Mudanças de paradigmas no uso e ordenação do solo em face da necessária proteção da qualidade das águas subterrâneas
This present work intends to discover the view of the subterranean waters within the Brazilian territory. Its primary chapters features a technical sketch with the intention of presenting to the law professional the world of hydrogeology. Also we demonstrate the vulnerability and existent contaminations which affect the hydro-subterranean springs. We have di
Publicado em: 2005
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14. Utilização do conceito de fugacidade na previsão do comportamento ambiental do carbosulfan e do carbofuran na cultura do arroz irrigado
Pesticide use to control pests, diseases and weeds is steadily increasing due to a general food demand increase, cropping area limitation, and manpower availability. Pesticide application without a sound knowledge may hazard environment and human health. Regulatory agencies enforces that, before a new product releasing to the market for agricultural use, int
Publicado em: 2005
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15. Eletrochemical techniques for particulate system decontamination treatments. / Avaliação da técnica de eletroosmose na remoção de contaminante orgânico em meios particulados.
The use of electrochemical techniques is probably one of most promising technology for particulate system decontamination treatments. This methodology appears as able to remove heavy metals, radionucletides and organic and inorganic contaminations. By using an electric potential difference with low currents intensities through electrodes, the contaminants in
Publicado em: 2001
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16. Biochemical fingerprinting of water coliform bacteria, a new method for measuring phenotypic diversity and for comparing different bacterial populations.
A simple, automated microplate system for biochemical characterization of water isolates can be used to obtain fingerprints of the bacterial flora from various water samples. Mathematical models for calculating the diversities and similarities between bacterial populations are described for such fingerprints. The diversity may give information on whether an
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17. Effect of Bacterial Contamination on Cecal Size and Cecal Contents of Gnotobiotic Rodents
In the present investigation the effect of various bacterial contaminations of gnotobiotic mice and rats on cecal size is presented. Of the species tested, Bacteroides oralis and Fusobacterium nucleatum did not establish in germ-free mice. Streptococcus mutans, Clostridium difficile, a Neisseria strain and two recent cecal isolates established, but failed to
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18. Resolution of the membrane moiety of the H+-ATPase complex into two kinds of subunits.
The H+-translocating ATPase complex from the thermophilic bacterium PS3 (TF0-F1) is composed of a water-soluble part with ATP-hydrolyzing activity (TF1) and a membrane moiety with H+-conducting activity (TF0). TF0 was obtained by treating TF0-F1 with urea and removing contaminations on a carboxymethyl-cellulose column. This TF0 contained only two kinds of su