{"created":"2021-03-01T06:20:41.653039+00:00","id":17633,"links":{},"metadata":{"_buckets":{"deposit":"439cf4ec-ba99-4471-aa44-ceddf60ed720"},"_deposit":{"id":"17633","owners":[],"pid":{"revision_id":0,"type":"depid","value":"17633"},"status":"published"},"_oai":{"id":"oai:soar-ir.repo.nii.ac.jp:00017633","sets":["1702:1721:1727"]},"author_link":["49519"],"item_10_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1970-02-28","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"40","bibliographicPageStart":"33","bibliographicVolumeNumber":"4","bibliographic_titles":[{"bibliographic_title":"信州大学教養部紀要. 第二部, 自然科学"}]}]},"item_10_description_20":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"For a few years from 1962, the author has studied the yellowing of silk, aqueous tyrosine, tryptophane and their mixed solutions by exposing them to light applying the optical method, especially colorimetries. Now these studies are fragmentary and not systematized, so the author wishes to arrange and unify the results in the former parts of this paper. In regard to the relation between reflectance R (%) of silk or transmittance T (%) of the mixed solutions by irradiating them to monochromatic lights and the time of exposure t (hr), the following empirical formula was obtained with satisfactory accuracy. R (or T)= a (t + k )-b. (0 < b << 1) Consequently, the yellowing velocity is - dR/dt (or - dT/dt) = ab / (t + k )b÷1 Here, the constant k, depending on the wavelength of irradiating light, is positive in the case of silk and indicates the coloring before the measurement. On the other hand, in the case of mixed solutIons, k is negative and denotes the exsistence of induction period because of the delay of appearance of color. Up till the present day, many studies have been made concerning the production of H₂O₂ at the time of the yellowing of aqueous solutions of tyrosine and tryptophane by light. In such a case that the mixed solutions were added H₂O₂ previously, the author ascertained that k is reduced to zero and therefore the induction period was shortened exceedingly. In consequence, H₂O₂ yields are closely connected with the yellowing degree, induction period and photosensitization of these solutions, dominating as the initiator of coloring.","subitem_description_type":"Abstract"}]},"item_10_description_30":{"attribute_name":"資源タイプ（コンテンツの種類）","attribute_value_mlt":[{"subitem_description":"Article","subitem_description_type":"Other"}]},"item_10_description_5":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"信州大学教養部紀要. 第二部, 自然科学 4: 33-40(1970)","subitem_description_type":"Other"}]},"item_10_publisher_4":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"信州大学教養部"}]},"item_10_source_id_35":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0583-0613","subitem_source_identifier_type":"ISSN"}]},"item_10_source_id_40":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN0012116X","subitem_source_identifier_type":"NCID"}]},"item_1627890569677":{"attribute_name":"出版タイプ","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":"竹村,  寿二"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2015-09-28"}],"displaytype":"detail","filename":"Liberal_arts_S04-04.pdf","filesize":[{"value":"455.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"Liberal_arts_S04-04.pdf","url":"https://soar-ir.repo.nii.ac.jp/record/17633/files/Liberal_arts_S04-04.pdf"},"version_id":"bd075eeb-5bf5-4857-9747-f1f73056b5fb"}]},"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":"光照射によるチロシン, トリプトファン水溶液の黄褐変とH₂O₂ の影響について","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"光照射によるチロシン, トリプトファン水溶液の黄褐変とH₂O₂ の影響について","subitem_title_language":"ja"},{"subitem_title":"Optical Studies on the Yellowing of Tyrosine, Tryptophane and Their Mixed Solutions and the Effect of HO by Exposing to Light","subitem_title_language":"en"}]},"item_type_id":"10","owner":"1","path":["1727"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2010-02-12"},"publish_date":"2010-02-12","publish_status":"0","recid":"17633","relation_version_is_last":true,"title":["光照射によるチロシン, トリプトファン水溶液の黄褐変とH₂O₂ の影響について"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-03-31T05:38:11.513078+00:00"}