{"created":"2023-06-20T14:46:22.427398+00:00","id":13917,"links":{},"metadata":{"_buckets":{"deposit":"c1eff530-13a1-483c-ad47-166ce1ac94d1"},"_deposit":{"created_by":1,"id":"13917","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"13917"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00013917","sets":["1543:1633:1648","1887:1891"]},"author_link":["127800","127804","127805","127807","127801","127809","127808","127802","127803","127806"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Drop-tower experiments with a low-gravity transitional phase"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2003-02","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"32","bibliographicPageStart":"29","bibliographic_titles":[{"bibliographic_title":"宇宙利用シンポジウム　第19回　平成14年度"},{"bibliographic_title":"Space Utilization Research: Proceedings of the Nineteenth Space Utilization Symposium","bibliographic_titleLang":"en"}]}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"The effects of short-term microgravity on the swimming behavior of Paramecium have been studied using a drop tower, which provides a transitional phase of low gravity before starting the free fall. The basic mechanism of the tower is what is known as Atwood's apparatus. In the tower, the initial fall of a drop capsule is decelerated by a counterweight connected with a steel wire to the holder of the capsule over a pair of pulleys. After this transitional phase of low gravity, the capsule was released by a mechanical trigger system to start a free fall as reported previously. The changes of the g-value during the fall were recorded using two sensors of different sensitivities (Crossbow, CXL25M1Z, 25 g full scale and CXL02F1Z, 2 g) and a PC card recorder (Teac, DR-C2). The swimming movements of paramecia were observed by a video camera and the video images were transmitted by wireless to a remote videocassette recorder. An experimental chamber containing approximately 200 Paramecium cells was turned from horizontal to upright immediately before the start of the fall. Considerable oscillations in g were observed especially just after the onset of the transient low gravity, which may be caused by vibration of the counterweight and the steel wire connected to the capsule holder. Some changes in parameters of the helical tracks, such as an increase in wavelength of some tracks, were observed after the start of the low gravity phase. Further investigation is necessary to identify the effects of low gravity at various levels. Many paramecia showed ciliary-reversal responses during the fall, some of which might have been induced by the vibration of the capsule. Reducing the mechanical oscillation of the system and using mutants of Paramecium lacking ciliary reversal responses may offer some advantages in further analyses.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0045438010","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙科学研究所"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"The Institute of Space and Astronautical Science (ISAS)"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"浜松医科大学 医学部　生物学"},{"subitem_text_value":"東京大学"},{"subitem_text_value":"浜松医科大学 医学部　生物学"},{"subitem_text_value":"浜松医科大学 医学部　生物学"},{"subitem_text_value":"名古屋大学"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Hamamatsu University School of Medicine Department of Biology, Faculty of Medicine"},{"subitem_text_language":"en","subitem_text_value":"University of Tokyo"},{"subitem_text_language":"en","subitem_text_value":"Hamamatsu University School of Medicine Department of Biology, Faculty of Medicine"},{"subitem_text_language":"en","subitem_text_value":"Hamamatsu University School of Medicine Department of Biology, Faculty of Medicine"},{"subitem_text_language":"en","subitem_text_value":"Nagoya University"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"村上, 彰"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"高橋, 景一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"右藤, 文彦"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"堀口, 弘子"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"吉村, 建二郎"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Murakami, Akira","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takahashi, Keiichi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Uto, Norihiko","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Horiguchi, Hiroko","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yoshimura, Kenjiro","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"重力効果","subitem_subject_scheme":"Other"},{"subitem_subject":"落下塔","subitem_subject_scheme":"Other"},{"subitem_subject":"自由落下","subitem_subject_scheme":"Other"},{"subitem_subject":"ゾウリムシ","subitem_subject_scheme":"Other"},{"subitem_subject":"遊泳","subitem_subject_scheme":"Other"},{"subitem_subject":"遷移相","subitem_subject_scheme":"Other"},{"subitem_subject":"ビデオテープレコーダ","subitem_subject_scheme":"Other"},{"subitem_subject":"減速","subitem_subject_scheme":"Other"},{"subitem_subject":"gravitational effect","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"drop tower","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"free fall","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"paramecium","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"swimming","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"transitional phase","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"video tape recorder","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"deceleration","subitem_subject_language":"en","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":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"2段式落下装置による落下実験","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"2段式落下装置による落下実験"}]},"item_type_id":"5","owner":"1","path":["1648","1891"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"13917","relation_version_is_last":true,"title":["2段式落下装置による落下実験"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T05:42:44.143732+00:00"}