{"created":"2021-03-01T07:00:21.370557+00:00","id":40697,"links":{},"metadata":{"_buckets":{"deposit":"f3c72c01-28bd-4961-af1a-4b57569a5ce0"},"_deposit":{"id":"40697","owners":[],"pid":{"revision_id":0,"type":"depid","value":"40697"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00040697","sets":["40:6494:7162:7184:7185","9:504:7165:7186:7187"]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2010-08-20","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"180","bibliographicPageStart":"172","bibliographicVolumeNumber":"34","bibliographic_titles":[{"bibliographic_title":"Coastal marine science"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Three sediment cores about 50 cm lengths collected from the coastal of Coal-Fired Power Plant at Kapar, Selangor, Malaysia on 25th October 2003 to investigate fluctuation activity of natural thorium isotopes such as thorium-232, thorium-230 and thorium-228 in various depths of sediments core at the effluent area of Kapar Coal electric power station. Then also affect from the coal-fired power station operation in enhancement activities of natural thorium isotopes to the marine environment. The unsupported activity of thorium-228 used to estimate the sediment mixing with extremely high rate value of 12455cm2 yr(-1) at the hot water discharge station. The activity range of thorium-232, thorium-230 and thorium-228 was from 4.38±0.14 to 11.75±0.51 dpm/g, 2.73±0.11 to 9.54±0.43 dpm/g and 3.34±0.19 to 12.38±0.61 dpm/g, respectively. All three isotopes display non-uniform and greatly fluctuated distribution from surface to the deeper layers as revealed by high sediments mixing. The ratio values of thorium-230/thorium-232 and thorium-228/thorium-232 also exhibited as non-uniform profile where the average ratio of thorium-228/thorium-232 was about 0.76 indicating low contain activity of uranium-238 or uranium-234 in the detrital materials and that uranium was tends to diffuse from sediments during the weathering, erosion and sediments transport. Meanwhile, the ratio of thorium-228/thorium-232 less than unity cause by the leach out process of radium-228 from sediment-water interface. The statistical correlation coefficient value obtained from the Pearson method have a positive correlation between thorium-232, thorium-230 and thorium-228 with Al, Fe and Mn, indicating thorium isotopes were attached with the oxides metals. Then the total carbon value also shows a significant negative correlation with thorium-232 and thorium-228 where these isotopes tend to decrease with increasing total carbon content in the sediments.","subitem_description_type":"Abstract"}]},"item_4_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Proceedings of 4th JSPS-VAST Joint Seminar on 'Coastal Marine Science', Hai Phong, Viet Nam, 26-28 October 2009","subitem_description_type":"Other"},{"subitem_description":"Ocean Pollution","subitem_description_type":"Other"}]},"item_4_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15083/00040688","subitem_identifier_reg_type":"JaLC"}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"International Coastal Research Center, Atmosphere and Ocean Research Institute, the University of Tokyo"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11957899","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"13493000","subitem_source_identifier_type":"ISSN"}]},"item_4_subject_15":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"452","subitem_subject_scheme":"NDC"}]},"item_4_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"東京大学大気海洋研究所国際沿岸海洋研究センター"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Marine Ecosystem Research Centre (EKOMAR), Universiti Kebangsaan Malaysia"},{"subitem_text_value":"School of Environmental & Natural Resources Sciences, Faculty of Science & Technology, Universiti Kebangsaan Malaysia"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Mohamed, Che Abd Rahim"}],"nameIdentifiers":[{"nameIdentifier":"93600","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shafie, Azlina"}],"nameIdentifiers":[{"nameIdentifier":"93601","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":"2017-06-14"}],"displaytype":"detail","filename":"CMS340126.pdf","filesize":[{"value":"326.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"CMS340126.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/40697/files/CMS340126.pdf"},"version_id":"268e7d84-ea80-4953-8b64-d8fd306dc10e"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"coastal water","subitem_subject_scheme":"Other"},{"subitem_subject":"sedimentation rate","subitem_subject_scheme":"Other"},{"subitem_subject":"radioactive","subitem_subject_scheme":"Other"},{"subitem_subject":"metals","subitem_subject_scheme":"Other"},{"subitem_subject":"pollution","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"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":"Natural thorium isotopes levels in marine sediments of Coal-Fired Power Plant","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Natural thorium isotopes levels in marine sediments of Coal-Fired Power Plant"}]},"item_type_id":"4","owner":"1","path":["7187","7185"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-05-25"},"publish_date":"2012-05-25","publish_status":"0","recid":"40697","relation_version_is_last":true,"title":["Natural thorium isotopes levels in marine sediments of Coal-Fired Power Plant"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:16:17.899224+00:00"}