The interactions between surface-modified activated carbons and trichloroethylene (TCE) or tetrachloroethylene (PCE) were estimated based on the adsorption isotherms and constants of the Freundlich ...and Langmuir equations. This result indicated that PCE strongly interacts with the activated carbon surface compared to TCE, because PCE is a more hydrophobic compound than TCE. The adsorption of TCE onto the activated carbon was effected to the presence of water, while that for PCE was not. The removal of TCE has to use for more hydrophobic activated carbon, that is, the activated carbon treated with hydrogen gas (AC-Red). On the other hand, the removal of PCE in water could be removed by the untreated activated carbon (AC).
The purpose of this study is to compare the stale of teeth in young adults who had consumed fluoridated water from birth to5–8 yr of age with the subjects who had non‐fluoridated water. The sample ...consisted of 117 18 22‐yr‐old female nursing school students. The data obtained in dental examinations were sorted according to their place of residence, and then divided into groups depending on whether their place of residence had been supplied with fluoridated water or not. The fluoride concentration in the water had been 0.7–1.0 ppm in the six water supply systems which were under the control of the US military base. In the subjects who had fluoridated water, the following differences were found when compared to the control subjects: missing teeth and highly progressed caries occurred less frequently; significantly lower caries prevalence was present on free smooth and approximal surfaces; the overall DMFT differences in favor of the fluoridated subjects were small and non‐significant.
Removal of endocrine disruptors in soil by cyclodextrin Kawasaki Naohito, Kinki University, Osaka (Japan). School of Pharmaceutical Sciences; Nakamura Takeo, Kinki University, Osaka (Japan). School of Pharmaceutical Sciences; Tanada Seiki, Kinki University, Osaka (Japan). School of Pharmaceutical Sciences ...
2002
Conference Proceeding
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