{"created":"2023-05-15T14:39:01.853967+00:00","id":53621,"links":{},"metadata":{"_buckets":{"deposit":"cb805ea4-1438-46d1-8159-10dab0b7339d"},"_deposit":{"created_by":1,"id":"53621","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"53621"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00053621","sets":["2"]},"author_link":["547249","547251","547245","547239","547247","547253","547252","547256","547241","547258","547254","547257","547242","547250","547246","547255","547244","547240","547248","547243"],"item_10003_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2005-12","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"108","bibliographicPageStart":"107","bibliographicVolumeNumber":"47","bibliographic_titles":[{"bibliographic_title":"環境放射能調査研究成果論文抄録集"}]}]},"item_10003_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"2001年度より、放医研のランダムウォーク型大気拡散プログラムを3H用に変換して（Tritium-EESAD）、放医研の環境・人体核種移行評価システムに組み込み（Tritium-ERMA）、線源から人体までの3H移行量と被ばく線量をパーソナルコンピュータで評価・計算するための体制構築に着手した。その後システムは、IAEA主催のBIOMASS国際共同事業（BIOsphere Modelling and ASSessment program、生物圏モデル化評価、1996年〜2000年）、及び後継事業であるIAEA-EMRAS（Environmental Modeling for RAdiation Safety、放射線安全のための環境モデル化、2003〜2007年）の「3H作業グループ」で利用されたシナリオを計算し、プログラムコード及びパラメータの不都合を順次改訂して、検証作業を進めてきた。今年度は、湖の食物連鎖及び大豆のOBT（有機結合型3H）取り込みに関するシナリオを用いて、水圏生態系や日本の主幹食品についてモデルの検証・改訂を行った。まず恒常的に3Hで汚染されたパーチ湖湖水の実測濃度から、魚、貝、水草等のTFWT（組織自由水3H）とOBT濃度を推測計算させるシナリオでは、OBT／TFWTの比が陸上植物0.8とは違い、浮遊性の水草は0.6、微小藻類は0.5、湖底に根があり葉が湖面上の水草は0.3という結果であった。大豆の3H水蒸気曝露シナリオでは、６つの生育段階の中で、開花１ヶ月後に曝露した場合、マメのOBTへの取り込みが最も盛んであり、日本の取り込み予測パラメータによる計算値は実測値とよく合った。今後はフランスの提出した仮想緊急時放出シナリオを用いて、陸上作物摂取による被ばく線量の予測計算を行うとともに、放医研が放射能調査研究によってデータを蓄積した、東海村環境での「松葉シナリオ」を用いて、地上沈着過程についてのモデル詳細化を行う。","subitem_description_type":"Abstract"}]},"item_10003_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"文部科学省"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only 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