染絲の腐朽

安田 秀明

doi:10.2331/suisan.8.17

染絲の腐朽

安田秀明

著者情報

ジャーナルフリー

1939 年 8 巻 1 号 p. 17-22

DOI https://doi.org/10.2331/suisan.8.17

詳細

発行日: 1939/05/15 受付日: - J-STAGE公開日: 2008/02/29 受理日: - 早期公開日: - 改訂日: -
訂正情報
訂正日: 2008/02/29 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : It was presumed by Dr. M. T_{AUT ??} and was proved afterwards by Mr. M. U_NO that the following equation, obtained for the white cords, holds good for the dyed netting cords, too; -
logT/T₀-T=-(Kloge)t+const.,
where T₀ and T are the breaking strengths of wetted cord at the beginning and after t days' submersion, respectively, and K is a constant. According to the mentioned workers, the value of K is nearly constant, independent of the kind of preservative dye in common use, not containing tar, and it has the same value whether the cord is dyed or not.
If t₀ and t₁, respectively, represent the days of submersion when T/T₀, assumus two different constant ratios, we obtain from the above equation; -
K′(t₁-t₀)=const., K′=Kloge.
The present author examined this relation with available data of two or three observations, with the following results: -(1) The relation of 1/K to t₁-t₀, where for t₁, T/T₀=1/2 and for t₀, the cord begins to decompose, shows that 1/t₁-t₀ can be employed instead of 1/K, and that any of the available observations is not sufficient to decide the difference in quality of the dyes used. (Fig. 1, 2 top).
(2) In the case, where no remarkable difference in strength is caused by dying, the efficacy of dying is mainly results in the value of K and t₀ (Fig.1, 2 bottom).
(3) K is the less, when t₀ is the greater; specially so with those results, in which the relation of 1/K to t₁-t₀ shows little scattering, such as for silk and cotton cords supplied by N_IPPON T_EITI G_YOGYÖ K_ENKYÛ-K_WAI (The Japanese Society for the Study of the Fixed Net Fishery), and those of Mr. M_URATA. This is in accordance with the findings of Dr. M. T_AUTI and of the present author for undyed cords.
Right : It was presumed by Dr. M. T_{AUT ??} and was proved afterwards by Mr. M. U_NO that the following equation, obtained for the white cords, holds good for the dyed netting cords, too; -
logT/T₀-T=-(Kloge)t+const.,
where T₀ and T are the breaking strengths of wetted cord at the beginning and after t days' submersion, respectively, and K is a constant. According to the mentioned workers, the value of K is nearly constant, independent of the kind of preservative dye in common use, not containing tar, and it has the same value whether the cord is dyed or not.
If t₀ and t₁, respectively, represent the days of submersion when T/T₀, assumus two different constant ratios, we obtain from the above equation; -
K'(t₁-t₀)=const., K'=Kloge.
The present author examined this relation with available data of two or three observations, with the following results: -(1) The relation of 1/K to t₁-t₀, where for t₁, T/T₀=1/2 and for t₀, the cord begins to decompose, shows that 1/t₁-t₀ can be employed instead of 1/K, and that any of the available observations is not sufficient to decide the difference in quality of the dyes used. (Fig. 1, 2 top).
(2) In the case, where no remarkable difference in strength is caused by dying, the efficacy of dying is mainly results in the value of K and t₀ (Fig.1, 2 bottom).
(3) K is the less, when t₀ is the greater; specially so with those results, in which the relation of 1/K to t₁-t₀ shows little scattering, such as for silk and cotton cords supplied by N_IPPON T_EITI G_YOGYÖ K_ENKYÛ-K_WAI (The Japanese Society for the Study of the Fixed Net Fishery), and those of Mr. M_URATA. This is in accordance with the findings of Dr. M. T_AUTI and of the present author for undyed cords.

訂正日: 2008/02/29 訂正理由: - 訂正箇所: PDFファイル訂正内容: -

抄録

It was presumed by Dr. M. T_{AUT ??} and was proved afterwards by Mr. M. U_NO that the following equation, obtained for the white cords, holds good for the dyed netting cords, too; -
logT/T₀-T=-(Kloge)t+const.,
where T₀ and T are the breaking strengths of wetted cord at the beginning and after t days' submersion, respectively, and K is a constant. According to the mentioned workers, the value of K is nearly constant, independent of the kind of preservative dye in common use, not containing tar, and it has the same value whether the cord is dyed or not.
If t₀ and t₁, respectively, represent the days of submersion when T/T₀, assumus two different constant ratios, we obtain from the above equation; -
K'(t₁-t₀)=const., K'=Kloge.
The present author examined this relation with available data of two or three observations, with the following results: -(1) The relation of 1/K to t₁-t₀, where for t₁, T/T₀=1/2 and for t₀, the cord begins to decompose, shows that 1/t₁-t₀ can be employed instead of 1/K, and that any of the available observations is not sufficient to decide the difference in quality of the dyes used. (Fig. 1, 2 top).
(2) In the case, where no remarkable difference in strength is caused by dying, the efficacy of dying is mainly results in the value of K and t₀ (Fig.1, 2 bottom).
(3) K is the less, when t₀ is the greater; specially so with those results, in which the relation of 1/K to t₁-t₀ shows little scattering, such as for silk and cotton cords supplied by N_IPPON T_EITI G_YOGYÖ K_ENKYÛ-K_WAI (The Japanese Society for the Study of the Fixed Net Fishery), and those of Mr. M_URATA. This is in accordance with the findings of Dr. M. T_AUTI and of the present author for undyed cords.

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