水產常用藥物對斑節蝦苗安全濃度之研究

The Safety Concentration of Chemotherapeutic Agents on Penaeus Japonicus

林清龍(Ching-Long Lin) ； 熊文俊(Wen-Jiun Shyong) ； 郭世榮(Shih-Rong Kuo) ； 陳秀男(Shiu-Nan Chen)

《臺灣水產學會刊》 20卷4期 (1993/12) Pp. 357-366

https://doi.org/10.29822/JFST.199312.0008

摘要

爲改進圓型網板之力學特性，本研究利用直徑30.7 cm與彎曲度10％之單槽洞、雙槽洞及無槽洞的圓型網板，於雷諾數0.95×10^(5)～3.6×10^(5)及水溫21.2～22.7℃之條件下，進行水槽試驗，攻角之變化範圍爲0～40°。單槽洞及雙槽洞圓型網板於攻角25～32°時，其抗力係數均較無槽洞網板爲小，單槽洞及雙槽洞網板在最大展開力係數時，其攻角分別較無槽洞網板增加4°及6°，而攻角在20～35°時，單槽洞及雙槽洞網板之展抗比亦均較無槽洞網板爲大。另就最大展抗比及最大展抗比時之攻角前後各5度範圍內的平均展抗比作爲網板效能之判斷，及以最大展抗比之75％的攻角範圍大小及壓力中心係數於最大展抗此時之攻角前後各5度的變異係數作爲網板穩定性之判斷時得知，雙槽洞網板之力學特性較單槽洞網板爲佳，而單槽洞網板則優於無槽洞網板。

關鍵字

斑節蝦 ； 化學治療劑 ； LC50

並列摘要

To improve the hydrodynamic characteristics of the saucer-shaped otter boards,theexperiments were done with the one-slotted,two-slotted and unslotted otter boardsmeasuring 30.7cm in diameter with a camber of 10% in the conditions of Reynolds'number 0.95×10^(5)-3.6×10^(5)and water temperature 21.2-22.7℃.The attack angle usedwas between 0 and 40℃.The drag coefficients of one-slotted and two-slotted boards wereless than that of unslotted board at the attack angles of 25-32 degress.The angles ofattack at the maximum sheer coefficient ot one-slotted and two-slotted boards increased4 and 6 degrees more than that of unslotted board respectively.The two-slotted saucer-shaped otter board is better than one-slotted board,and the one-slotted board superiorto the unslotted board in hydrodynamic characteristics when judging from the efficiencyand stability of otter board.

並列關鍵字

Penaeus Japonicus ； Chemotherapeutic Agent ； Median Lethal Concentration