{"created":"2023-05-15T10:11:27.934044+00:00","id":1063,"links":{},"metadata":{"_buckets":{"deposit":"e4aa6ea2-17b4-48bc-82c0-87a6174f0249"},"_deposit":{"created_by":1,"id":"1063","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"1063"},"status":"published"},"_oai":{"id":"oai:meio-u.repo.nii.ac.jp:00001063","sets":["62:86"]},"author_link":["2244","2245"],"item_8_alternative_title_1":{"attribute_name":"その他（別言語等）のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Self-purification of Organic Compounds in River Water of Okinawa Island, Japan"}]},"item_8_biblio_info_22":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueNumber":"14","bibliographicPageEnd":"108","bibliographicPageStart":"101","bibliographic_titles":[{}]}]},"item_8_description_8":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"沖縄島内の河川水中において河川水中に本来生息する微生物などによる河川の自浄作用がどのように働いているかを知るため、実験室内で酸素の供給および光の供給の有無による国場川河川水中の各態炭素濃度の変化を測定した。河川水中の無機炭素(IC)濃度は、明条件下では、暗条件下よりも時間の経過とともにより大きく低下することが観察された。一方、酸素の供給の有無はICの推移に対して大きな影響を与えなかった。溶存態有機炭素(DOC)は、暗条件で静置した場合にはほとんど変化しなかったが、明条件で静置した場合には時間の経過とともに増加する傾向を示した。暗条件でばっ気した場合は時間の経過とともにDOCが低下したが、明条件ではDOCは初期には減少したのち横ばいとなった。国場川において各態炭素濃度分布を測定したところ、河川の流下とともにICが減少し、全有機炭素は増加する傾向を示した。河川浄化のためには、河床の構造や材質の改良による酸素の供給など、河川水中に自然に存在している微生物による有機物分解が十分に機能できるような条件を整えるとともに、多様な生物が生息する健全な生態系が河川中に存在できる条件を整備することが重要であることが示された。","subitem_description_type":"Other"},{"subitem_description":"In order to know how the self-purification by microorganisms works in the rivers on Okinawa Island, Japan, the change of carbon concentrations in a river water sample with or without oxygen and/or light supply was measured. Inorganic carbon (IC) concentration diminished more with light, whereas oxygen supply did not affect its change. Without oxygen supply, the concentration of dissolved organic carbon (DOC) did not change under dark condition, but increased with time under light. With oxygen supply, DOC diminished under dark condition, whereas it kept the same level with light after an initial decrease. The decrease of IC and the increase of total organic carbon were observed in river water samples along the flow of Kokuba River on Okinawa Island. For the purpose of river water purification, it is important to establish conditions which will enhance the ability of the effective microorganisms originally present in each river to decompose organic pollutants, This can be achieved by increasing the oxygen supply by the use of improved materials and/or structures of river beds. In addition, it is also important to establish a balanced ecosystem composed of a wide variety of flora and fauna.","subitem_description_type":"Other"}]},"item_8_description_9":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_8_publisher_10":{"attribute_name":"公開者・出版者","attribute_value_mlt":[{"subitem_publisher":"名桜大学"}]},"item_8_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"名桜大学"}]},"item_8_source_id_6":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1882-4412","subitem_source_identifier_type":"ISSN"}]},"item_8_text_11":{"attribute_name":"公開者別名","attribute_value_mlt":[{"subitem_text_value":"PUBLISHED BY MElO UNIVERSITY"}]},"item_8_text_15":{"attribute_name":"タイプ","attribute_value_mlt":[{"subitem_text_value":"紀要論文"}]},"item_8_text_16":{"attribute_name":"NIIタイプ","attribute_value_mlt":[{"subitem_text_value":"Departmental Bulletin Paper"}]},"item_8_text_17":{"attribute_name":"DCMI","attribute_value_mlt":[{"subitem_text_value":"text"}]},"item_8_text_18":{"attribute_name":"収録種別","attribute_value_mlt":[{"subitem_text_value":"紀要論文"}]},"item_8_text_19":{"attribute_name":"収録種別","attribute_value_mlt":[{"subitem_text_value":"02"}]},"item_8_text_20":{"attribute_name":"収録雑誌名","attribute_value_mlt":[{"subitem_text_value":"名桜大学紀要 = THE MEIO UNIVERSITY BULLETIN"}]},"item_8_text_21":{"attribute_name":"NII書誌ID","attribute_value_mlt":[{"subitem_text_value":"AN10512334"}]},"item_8_text_25":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"名桜大学国際学群"}]},"item_8_text_4":{"attribute_name":"別言語の著者","attribute_value_mlt":[{"subitem_text_value":"TASHIRO, Yutaka"},{"subitem_text_value":"OZATO, Kohei"}]},"item_8_text_5":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_text_value":"2009-06-30"}]},"item_8_version_type_24":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"田代, 豊"}],"nameIdentifiers":[{"nameIdentifier":"2244","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"大里, 浩平"}],"nameIdentifiers":[{"nameIdentifier":"2245","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-12-03"}],"displaytype":"detail","filename":"No14p101.pdf","filesize":[{"value":"2.8 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"No14p101.pdf","url":"https://meio-u.repo.nii.ac.jp/record/1063/files/No14p101.pdf"},"version_id":"29fa8dec-f952-45aa-a0c7-e82851469eec"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"沖縄島の河川水における有機物自浄作用","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"沖縄島の河川水における有機物自浄作用"}]},"item_type_id":"8","owner":"1","path":["86"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-01-30"},"publish_date":"2012-01-30","publish_status":"0","recid":"1063","relation_version_is_last":true,"title":["沖縄島の河川水における有機物自浄作用"],"weko_creator_id":"1","weko_shared_id":1},"updated":"2023-05-15T10:16:59.143022+00:00"}