{"created":"2023-07-27T04:49:12.829130+00:00","id":50688,"links":{},"metadata":{"_buckets":{"deposit":"4d3efb33-ebda-446a-aba4-ca434fea735b"},"_deposit":{"created_by":3,"id":"50688","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"50688"},"status":"published"},"_oai":{"id":"oai:tohoku.repo.nii.ac.jp:00050688","sets":["72:292"]},"author_link":["124516","124514","124515"],"item_4_alternative_title_20":{"attribute_name":"その他の言語のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Viscosity of Glassy Na_2O-SiO_2-B_2O_3 System"}]},"item_4_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1986-09-30","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"52","bibliographicPageStart":"42","bibliographicVolumeNumber":"42","bibliographic_titles":[{"bibliographic_title":"東北大學選鑛製錬研究所彙報 = Bulletin of the Research Institute of Mineral Dressing and Metallurgy, Tohoku University"}]}]},"item_4_date_62":{"attribute_name":"登録日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2008-05-02","subitem_date_issued_type":"Created"}]},"item_4_date_63":{"attribute_name":"公開日（投稿完了日）","attribute_value_mlt":[{"subitem_date_issued_datetime":"2008-05-02","subitem_date_issued_type":"Created"}]},"item_4_date_65":{"attribute_name":"発行日","attribute_value_mlt":[{"subitem_date_issued_datetime":"1986-09-30","subitem_date_issued_type":"Created"}]},"item_4_date_80":{"attribute_name":"更新日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2010-01-27","subitem_date_issued_type":"Created"}]},"item_4_description_15":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_4_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Viscosity of sodium borosilicate glasses has been measured by a newly designed parallel plate viscometer in a range of viscosity from 10^<10> to 10^6 poise in order to compare the network forming ability of B_2O_3 with that of SiO_2 in silicate glasses. The measurements are carried out mainly on the two series of samples, namely, Na_2O・SiO_2-B_2O_3 (10-50mole%) and Na_2O・2SiO_2-B_2O_3 (0-50mole%) systems. Obtained results are summarized as follows : 1) Addition of B_2O_3 into silicate glasses brings about an increase of the viscosity. But the increasing rate of viscosity becomes lower at higher content of B_2O_3 in the glass. 2) Activation energy of viscous flow is increased markedly by an addition of 10 mole% of B_2O_3 into silicate glasses. However, it almost remains constant by the further addition of B_2O_3. 3) Addition of larger amount of B_2O_3 causes a decrease of viscosity due to a formation of oxygen three coordinated boron atoms. This situation can be found in the case of Na_2O・2SiO_2-50mole%B_2O_3 sample. 4) The effect of an addition of B_2O_3 on the viscosity increase is nearly the same as that of SiO_2 on the equimolar basis in dilute range of B_2O_3 content.","subitem_description_type":"Abstract"}]},"item_4_description_41":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"紀要類(bulletin)","subitem_description_type":"Other"}]},"item_4_description_66":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"783770 bytes","subitem_description_type":"Other"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"124515","nameIdentifierScheme":"WEKO"}],"names":[{"name":"SHIRAISHI, Yutaka"}]}]},"item_4_publisher_34":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東北大學選鉱製錬研究所"}]},"item_4_radio_69":{"attribute_name":"公開範囲","attribute_value_mlt":[{"subitem_radio_item":"学外"}]},"item_4_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0040876X","subitem_source_identifier_type":"ISSN"}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00168425","subitem_source_identifier_type":"NCID"}]},"item_4_version_type_16":{"attribute_name":"著者版フラグ","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":"白石, 裕"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"GRANASY, Laszlo"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-02-20"}],"displaytype":"detail","filename":"KJ00002352381.pdf","filesize":[{"value":"783.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"KJ00002352381.pdf","url":"https://tohoku.repo.nii.ac.jp/record/50688/files/KJ00002352381.pdf"},"version_id":"17f50a90-3af3-43fb-8b8f-21452725c03c"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"viscosity","subitem_subject_scheme":"Other"},{"subitem_subject":"viscometer","subitem_subject_scheme":"Other"},{"subitem_subject":"glassy state","subitem_subject_scheme":"Other"},{"subitem_subject":"sodium borosilicate","subitem_subject_scheme":"Other"},{"subitem_subject":"borate anomaly","subitem_subject_scheme":"Other"}]},"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":"ガラス状ホウケイ酸ソーダの粘性","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ガラス状ホウケイ酸ソーダの粘性"}]},"item_type_id":"4","owner":"3","path":["292"],"pubdate":{"attribute_name":"公開日","attribute_value":"2008-05-02"},"publish_date":"2008-05-02","publish_status":"0","recid":"50688","relation_version_is_last":true,"title":["ガラス状ホウケイ酸ソーダの粘性"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-07-27T17:43:21.284882+00:00"}