{"created":"2023-07-25T08:12:27.028627+00:00","id":12801,"links":{},"metadata":{"_buckets":{"deposit":"27d0e79b-a768-4a62-abe7-4c14e8870f7c"},"_deposit":{"created_by":3,"id":"12801","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"12801"},"status":"published"},"_oai":{"id":"oai:ir.kagoshima-u.ac.jp:00012801","sets":["228:262:4835"]},"author_link":["105856","105854","105853","105858","105859","105855","4790","105857","105852"],"item_7_alternative_title_18":{"attribute_name":"別言語のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Studies on the Drag Net II : The Effects of the Changing Web Net"}]},"item_7_alternative_title_19":{"attribute_name":"タイトルよみ","attribute_value_mlt":[{"subitem_alternative_title":"ソコビキアミ ノ ケンキュウ II : キリカエアミ ノ コウカ ニツイテ"}]},"item_7_biblio_info_5":{"attribute_name":"収録雑誌名","attribute_value_mlt":[{"bibliographicIssueNumber":"1","bibliographicPageEnd":"155","bibliographicPageStart":"147","bibliographicVolumeNumber":"22","bibliographic_titles":[{"bibliographic_title":"鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University"}]}]},"item_7_date_6":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"1973-12-25"}]},"item_7_description_4":{"attribute_name":"要約(Abstract)","attribute_value_mlt":[{"subitem_description":"Four types of the model drag net whose baiting-part was supplied with, at the cod-head, four kinds\nof changing web net were used, experiments being performed at a tank of circulating water system in\nthe laboratory. The models were made in a reduction to one fourteenth of the original scale after\nTauchi's comparative method. The current velocities inside and outside of the net, were measured with\nsmall type current-meter, and as was performed in the Ist Report, the relationship between the current\nvelocity and the height of net-mouth, and that between the current velocity and the resistance of net\nwere analyzed.\nResults are as follows;\n(1) Current velocity inside the net was faster about 5~20% than that at the net-mouth ; the higher\nwas the current velocity at the net-mouth, the lower was that beside the net-body, owing to the current\nbeside the boby, showing eddy-state. Both at the side of the triangled webbing and at the rear of the\ncod-end there was noted a current of lower velocity, the value ranging about 45~80% of that of the\nnet-mouth.\n(2) The height of net-mouth of the changing web net with large mesh (B_1 net) was ascertained to be\nlarger than that of the other three nets ; the difference in the height being no less than provided that\nthe interval between the wing ends was 42m. and the towing speed was 3 knots.\nIn B_1 net mentioned above, current velocity inside the net was noted to be faster than those in other\nthree nets. While relationship of the net-mouth height (h) and the towing speed (v) is to be sought by\nthe following formula. In case of h=h'e^{-av} B_1 net ; Value of a is 0.27, h' is 12.9m.","subitem_description_type":"Other"},{"subitem_description":"背網の1部分に構造の異なる切りかえ網を夫々に付加した4種の底曳網を田内法則に従って1/14に縮尺し,本学の大型回流水槽で実験した。実験は既報と同様に網の内外の流速を小型流速計でもって測定し,流速分布を求めると共に,網口中央高さ,網成り,網の受ける流水抵抗との関係について検討した。その結果 (1) 網中の流速は網口の流速より5~20%速く,網の側面の流速は網口の流速が高速になる程速くなる傾向があり,渦流状態になることが認められた。また低速部分が三角網と網の後方部分に形成され,いずれも網口の流速の45~80%の値を示している。(2) 大目合の切りかえ網を使用した網(B_1 net)は網口高さが顕著に高くなり3ノットで他の網より1mも高くなった。この網の場合の網中流速は他の網より速いことが認められた。網口高さ(hm)と曳網速度(Vノット)との関係はh=h'e^{-av}の一般式であらわされ,B_1 netの場合,aは0.27,h'は12.9mの値となる。","subitem_description_type":"Other"}]},"item_7_full_name_2":{"attribute_name":"著者よみ","attribute_value_mlt":[{"nameIdentifiers":[{}],"names":[{"name":"ヒゴ, ノビオ"}]},{"nameIdentifiers":[{}],"names":[{"name":"トクナガ, ヨシロウ"}]},{"nameIdentifiers":[{}],"names":[{"name":"タナカ, ケンゴ"}]}]},"item_7_full_name_3":{"attribute_name":"別言語の著者","attribute_value_mlt":[{"nameIdentifiers":[{}],"names":[{"name":"HIGO, Nobio"}]},{"nameIdentifiers":[{}],"names":[{"name":"TOKUNAGA, Yoshiro"}]},{"nameIdentifiers":[{}],"names":[{"name":"TANAKA, Kengo"}]}]},"item_7_publisher_23":{"attribute_name":"公開者・出版者","attribute_value_mlt":[{"subitem_publisher":"鹿児島大学"}]},"item_7_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0453087X","subitem_source_identifier_type":"ISSN"}]},"item_7_source_id_9":{"attribute_name":"NII書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AN00040498","subitem_source_identifier_type":"NCID"}]},"item_7_subject_15":{"attribute_name":"NDC","attribute_value_mlt":[{"subitem_subject":"664","subitem_subject_scheme":"NDC"}]},"item_7_text_24":{"attribute_name":"公開者よみ","attribute_value_mlt":[{"subitem_text_value":"カゴシマ ダイガク"}]},"item_7_text_25":{"attribute_name":"公開者別名","attribute_value_mlt":[{"subitem_text_value":"Kagoshima University"}]},"item_7_version_type_14":{"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":"肥後, 伸夫"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"徳永, 喜郎"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田中, 健悟"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-10-31"}],"displaytype":"detail","filename":"AN00040498_v22-1_p147-155.pdf","filesize":[{"value":"773.9 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"AN00040498_v22-1_p147-155.pdf","url":"https://ir.kagoshima-u.ac.jp/record/12801/files/AN00040498_v22-1_p147-155.pdf"},"version_id":"5271cbd5-ab9a-449f-9876-b9230e037e0a"}]},"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":"底曳網の研究 II. : 切りかえ網の効果について","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"底曳網の研究 II. : 切りかえ網の効果について"}]},"item_type_id":"7","owner":"3","path":["40","4835"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-06-18"},"publish_date":"2015-06-18","publish_status":"0","recid":"12801","relation_version_is_last":true,"title":["底曳網の研究 II. : 切りかえ網の効果について"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2024-01-30T05:44:28.594807+00:00"}