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開放止水の方法による水族の酸素消費量測定における簡易法-1 : 水量一定


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Title: 開放止水の方法による水族の酸素消費量測定における簡易法-1 : 水量一定
Other Titles: The Simple Calculation Method of Oxygen Consumption by Aquatic Animals in Water Tank―I Water volume constant
Authors: 田村, 修 / 諸岡, 等
Authors (alternative): Tamura, Osamu / Morooka, Hitoshi
Issue Date: Aug-1973
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.35, pp.49-52; 1973
Abstract: While the calculation method of oxygen consumption by aquatic animals developed by one of the authors (Morooka, 1967) requires a considerably troublesome procedure, a simpler method has been devised. The former method was derived from the equation Dt=(Da-Kf/K)e-Kt+Kf/K integrated from dD/dt=Kf-KD, (D……deficit rate of oxygen, t……time, Kf……decreasing rate of dissolved oxygen by animals, K……aeration constant) but the simple method is derived from the differential equation dD/dt=Kf-KD. Plotting dD/dt value as ordinate and corresponding D value as abscissa, the tangent of regression line becomes equal to K, and the point of intersection of Y-axis and the regression line becomes equal to Kf, provided that dD/dt is approximately equal to (Dn+1-Dn)/(tn+1-tn)instead of lim (Dn+1-Dn)/ (tn+1-t1)and the corresponding D is nearly equal to (Dn+1-Dn)/2. Then substitu-ting the Kf value in Kc=(Kf・V・Sat.O2)/BW(Kc……oxygen consumption, V……water volume), Kc value is obtained.
URI: http://hdl.handle.net/10069/30871
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第35号

Citable URI : http://hdl.handle.net/10069/30871

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