{"created":"2021-03-01T06:43:24.177978+00:00","id":25443,"links":{},"metadata":{"_buckets":{"deposit":"1bcfd598-85f1-4cad-92af-f3a62a54e39e"},"_deposit":{"id":"25443","owners":[],"pid":{"revision_id":0,"type":"depid","value":"25443"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00025443","sets":["27:2466:2467:2555","9:504:2469:2556"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"中性子ラジオグラフィによる樹木中の水分分布の測定"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1995","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"19","bibliographicPageStart":"13","bibliographicVolumeNumber":"93","bibliographic_titles":[{"bibliographic_title":"東京大学農学部演習林報告"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Neutron radiography (NRG) was applied to know the water distribution inside the wood. Five kinds of woods, Pinus thunbergii, Metasequoia glyptostroboides, Chamaecyparis obtusa, Quercus serrata and Robinia pseudoacacia, grown in the Experimental Station at Tanashi, the Tokyo University Forest, were used for the measurement. About four hours before performing NRG the logs of 80cm in length were prepared from the portion of 1m to 1.8m above the ground. Then the wood samples were taken to the atomic reactor and further cut to about one centimeter thickness just prior to the neutron irradiation to prevent any water loss due to the evaporation. Each sample was fixed to a cassette, in which an X-ray film and a gadrinium converter were sealed in vacuum. After developing the X-ray film, the image on the film was scanned and the water distribution inside the wood was obtained. The degree of the darkness in the image corresponded well to the water content in the sample. The resolution of the image was found to be about 15μm. Though the highest water distribution was observed, as expected, near the bark, it was shown that its distribution was not necessarily along with the annual ring. In the case of Robinia pseudoacacia, a few stem growth layers within an annual ring were also observed by NRG. Interestingly, the water content at the heartwood seems to be the same as sapwood, whereas from the optical image, the formation of heartwood was clearly observed. This is the first trial to obtain the real time water image in a wood sample, using NRG. NRG was shown to be a promising method to analyze the water movement inside the wood as well as the morphological difference of the tissue.","subitem_description_type":"Abstract"},{"subitem_description":"中性子ラジオグラフィ法を用いて樹木中の水分分布像を求める試みを行った。供試材は，東京大学農学部田無演習林に植林されていたクロマツ，メタセコイア，ヒノキ，コナラおよびニセアカシアである。供試材は水分の蒸発を防ぐために，測定の4時間前に伐採し，胸高部位から採取した長さ80cmの丸太を日本原子力研究所東海研究所に運び，実験の直前に厚さ1cmの円盤を取り試料とした。試料をX線フィルムとガドリニウムのコンバータを内蔵させたカセットに固定し，中性子照射を行った。照射後，X線フィルム像をスキャンニングして供試円盤の中性子ラジオグラフィ像を得た。像の黒化度は水分量に対応し，解像度は約15μmであった。樹木中の水分は，主に樹木の外側に分布し，年輪と無関係に分布している場合も見られた。心材部の水分量と辺材部の水分量とが殆ど等しい像を示す樹種と辺材部の水分量が心材部のそれより多い像を示す樹種があった。アカシアの場合には，疑年輪や導管が鮮明な像として観察された。本研究は，樹木研究への中性子ラジオグラフィ法の初めての試みであり，更に，手法を改良することにより，樹木中の水分のみならず，組織変化も追跡できるものと予想される。","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"54747","nameIdentifierScheme":"WEKO"}],"names":[{"name":"中西, 友子"}]},{"nameIdentifiers":[{"nameIdentifier":"54748","nameIdentifierScheme":"WEKO"}],"names":[{"name":"渡邊, 定元"}]}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京大学大学院農学生命科学研究科附属演習林"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00162451","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03716007","subitem_source_identifier_type":"ISSN"}]},"item_4_subject_15":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"610","subitem_subject_scheme":"NDC"}]},"item_4_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"The Tokyo University Forests"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学農学部"},{"subitem_text_value":"東京大学総合研究資料館"},{"subitem_text_value":"Faculty of Agriculture, Univ. of Tokyo"},{"subitem_text_value":"University Museum, Univ. of Tokyo"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"NAKANISHI, Tomoko M."}],"nameIdentifiers":[{"nameIdentifier":"54745","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"WATANABE, Sadamoto"}],"nameIdentifiers":[{"nameIdentifier":"54746","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":"2017-06-09"}],"displaytype":"detail","filename":"esrh093003.pdf","filesize":[{"value":"908.0 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"esrh093003.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/25443/files/esrh093003.pdf"},"version_id":"973abd20-6f96-417e-9753-f64c7dd97363"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Neutron Radiography","subitem_subject_scheme":"Other"},{"subitem_subject":"Pinus thunbergii","subitem_subject_scheme":"Other"},{"subitem_subject":"Metasequoia glyptostroboides","subitem_subject_scheme":"Other"},{"subitem_subject":"Chamaecyparis obtusa","subitem_subject_scheme":"Other"},{"subitem_subject":"Quercus serrata","subitem_subject_scheme":"Other"},{"subitem_subject":"Robinia pseudoacacia","subitem_subject_scheme":"Other"},{"subitem_subject":"中性子ラジオグラフィ","subitem_subject_scheme":"Other"},{"subitem_subject":"クロマツ","subitem_subject_scheme":"Other"},{"subitem_subject":"メタセコイア","subitem_subject_scheme":"Other"},{"subitem_subject":"ヒノキ","subitem_subject_scheme":"Other"},{"subitem_subject":"コナラ","subitem_subject_scheme":"Other"},{"subitem_subject":"ニセアカシア","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":"Water Distribution Inside the Woods by Neutron Radiography","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Water Distribution Inside the Woods by Neutron Radiography"}]},"item_type_id":"4","owner":"1","path":["2556","2555"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-09-03"},"publish_date":"2014-09-03","publish_status":"0","recid":"25443","relation_version_is_last":true,"title":["Water Distribution Inside the Woods by Neutron Radiography"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:03:41.468048+00:00"}