{"created":"2023-07-27T04:49:15.010856+00:00","id":50738,"links":{},"metadata":{"_buckets":{"deposit":"604c009e-770d-4ba4-a268-6c02a234264c"},"_deposit":{"created_by":3,"id":"50738","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"50738"},"status":"published"},"_oai":{"id":"oai:tohoku.repo.nii.ac.jp:00050738","sets":["72:292"]},"author_link":["124790","124791","124789","124792"],"item_4_alternative_title_20":{"attribute_name":"その他の言語のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"<Original Papers>Viscosity Measurement of Molten Na_2O-B_2O_3-SiO_2 System and Comparison of Viscosity in Molten and Glassy States"}]},"item_4_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1988-09-30","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"14","bibliographicPageStart":"8","bibliographicVolumeNumber":"44","bibliographic_titles":[{"bibliographic_title":"東北大學選鑛製錬研究所彙報"},{"bibliographic_title":"Bulletin of the Research Institute of Mineral Dressing and Metallurgy, Tohoku University","bibliographic_titleLang":"en"}]}]},"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":"1988-09-30","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":"The viscosity of molten sodium borosilicate system has been measured by a rotating cylinder viscometer, \"Rotovisco\", using platinum rotor and crucible in a viscosity range from 10^1 to 10^<3.5> poise. The obtained results are compared with the viscosity of the glassy state measured previously by a parallel plate viscometer. The following results are derived from the comparison. (1) Fulcher function, logη=A+B/(T-T_0), adequately represents the measured viscosity in the range from 10^1 to 10^<10> poise. (2) Apparent activation energy of viscous flow varies from 100-200kcal/mol in the glassy state to 20-30kcal/mol in the molten state. (3) Composition dependency of viscosity changes around the composition Na_2O/B_2O_3≅1 both in the glassy and molten states. However, such effect is very small in the molten state compared with that of the glassy state. (4) In the region of silica rich composition, the effect of B_2O_3 on viscosity is opposite in glassy and in molten states. Namely, viscosity increases with increase in B_2O_3 content in glassy state, but it decreases in molten state. (5) This contradictory effect of B_2O_3 on viscosity at both states suggests a change in bonding at both states as partially supported by available data of thermal expansivity in which expansivity shows a completely different manner on dependency of B_2O_3 content below and above the glass transition temperature.","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":"512536 bytes","subitem_description_type":"Other"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"124791","nameIdentifierScheme":"WEKO"}],"names":[{"name":"SHIRAISHI, Yutaka"}]},{"nameIdentifiers":[{"nameIdentifier":"124792","nameIdentifierScheme":"WEKO"}],"names":[{"name":"OGAWA, Hiroshi"}]}]},"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":[{"nameIdentifier":"124789","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小川, 浩"}],"nameIdentifiers":[{"nameIdentifier":"124790","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":"2017-02-20"}],"displaytype":"detail","filename":"KJ00000135452.pdf","filesize":[{"value":"512.5 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"KJ00000135452.pdf","url":"https://tohoku.repo.nii.ac.jp/record/50738/files/KJ00000135452.pdf"},"version_id":"2b5be56c-dc3e-411a-867e-185a7a163f55"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"viscosity","subitem_subject_scheme":"Other"},{"subitem_subject":"sodium boro-silicate","subitem_subject_scheme":"Other"},{"subitem_subject":"molten state","subitem_subject_scheme":"Other"},{"subitem_subject":"glassy state","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":"<報文>溶融状態におけるNa_2O-B_2O_3-SiO_2系の粘度測定とガラス状態における粘度との比較","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"<報文>溶融状態におけるNa_2O-B_2O_3-SiO_2系の粘度測定とガラス状態における粘度との比較"}]},"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":"50738","relation_version_is_last":true,"title":["<報文>溶融状態におけるNa_2O-B_2O_3-SiO_2系の粘度測定とガラス状態における粘度との比較"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-07-27T22:39:01.339692+00:00"}