{"created":"2023-05-15T14:50:33.368876+00:00","id":69137,"links":{},"metadata":{"_buckets":{"deposit":"068f66dc-659f-4dc0-9df7-13579ac10aef"},"_deposit":{"created_by":1,"id":"69137","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"69137"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00069137","sets":["10:28"]},"author_link":["678422","678425","678423","678424"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2007-10-23","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"U and Th concentrations are highly correlated with each other in rocks, non-agricultural field soil samples and river sediments so that their U/Th concentration ratios are almost the same (0.20-0.28). However, in agricultural fields, their U concentrations have been reported as relatively high1) possibly due to application of phosphatic fertilizers produced from phosphate rocks. To estimate the excess amount of U (Uess) originating from fertilizers, the natural U/Th ratio in non-agricultural fields would be useful because the fertilizers are known to be high in U content and low in Th content which makes the U/Th ratios much higher than in non-agricultural fields. In this study, we measured U and Th concentrations in 112 Japanese agricultural fields, and estimated Uess using the U/Th concentration ratios.","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"Eighth Conference of the East and Southeast Asian Federation of Soil Science Societies (ESAFS 8)","subitem_description_type":"Other"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Uchida, Shigeo"}],"nameIdentifiers":[{"nameIdentifier":"678422","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tagami, Keiko"}],"nameIdentifiers":[{"nameIdentifier":"678423","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"内田 滋夫","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"678424","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田上 恵子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"678425","nameIdentifierScheme":"WEKO"}]}]},"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":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Estimation of the anthropogenic U content in agricultural soil due to addition of phosphatic fertilizers","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Estimation of the anthropogenic U content in agricultural soil due to addition of phosphatic fertilizers"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2007-10-25"},"publish_date":"2007-10-25","publish_status":"0","recid":"69137","relation_version_is_last":true,"title":["Estimation of the anthropogenic U content in agricultural soil due to addition of phosphatic fertilizers"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T20:18:03.273258+00:00"}