著者

山辺 賢一郎 汪 群慧 成田 純也 吉田 晋也 森下 正人 白井 義人 尾川 博昭

出版者

Japan Society of Civil Engineers

雑誌

環境工学研究論文集 (ISSN:13415115)

巻号頁・発行日

vol.37, pp.81-88, 2000-11-13 (Released:2011-06-27)

参考文献数

14

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To develop a garbage recycling system including garbage disposal, lactic acid and biodegradable plastics production, the preservation and deodorization of garbage during storage and the explication of their mechanisms are very important. The changes of counts of viable cell in garbage collected from university's dining hall during the storage were observed. In spite of seasons, lactic acid bacteria became preferential bacteria after the garbage was stored for 24 hours. On the contrary, coliforms and clostridia that are indexes of putrefaction and pollution remarkably decreased. The coliforms were not detected after the 72- or 96- hour storage. No food poisoning bacteria, such as staphylococcus aureus and bacillus cereus, were detected after the 24 hours storage. From the results of experiment adding the staphylococcus aureus to the garbage, it was proved that the lactic acid bacteria also easily became preferential bacteria even if food poisoning bacteria gained predominance at the beginning of the storage. It is clear from this study that lactic acid fermentation during the storage process inhibits the growth of putrefactive bacteria and food poisoning bacteria, which, as a result, makes it possible to realize the preservation and deodorization of garbage.

著者

近藤 洋史 森下 正人 蘆田 佳世 大塚 結喜 苧阪 直行

出版者

学術雑誌目次速報データベース由来

雑誌

心理學研究 (ISSN:00215236)

巻号頁・発行日

vol.73, no.6, pp.480-487, 2002

被引用文献数

1 9

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We examined the relationship among intelligence, working memory, and reading comprehension using structural equation modeling (SEMI). Ninety-six participants were instructed to perform two reading comprehension tests and six cognitive tasks: two verbal intelligence subtests, two spatial intelligence subtests, and two reading span tasks. Three latent variables that were called verbal ability, spatial ability, and working memory were derived from the six cognitive tasks. SEMI demonstrated that the latent variables of working memory and verbal ability contribute to reading comprehension, suggesting that central executive functioning related to attention control was mediated among these cognitive abilities.