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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Intrinsic viscosity ： ウィキペディア英語版 Intrinsic viscosity Intrinsic viscosity $\backslash left(\backslash eta\; \backslash right)$ is a measure of a solute's contribution to the viscosity $\backslash eta$ of a solution. It should not be confused with inherent viscosity, which is the ratio of the natural logarithm of the relative viscosity to the mass concentration of the polymer. Intrinsic viscosity is defined as $$ \left(\eta \right ) = \lim_ \frac\phi} where $\backslash eta\_0$ is the viscosity in the absence of the solute and $\backslash phi$ is the volume fraction of the solute in the solution. As defined here, the intrinsic viscosity $\backslash left(\backslash eta\; \backslash right)$ is a dimensionless number. When the solute particles are rigid spheres at infinite dilution, the intrinsic viscosity equals $$ \frac, as shown first by Albert Einstein. In practical settings, $\backslash phi$ is usually solute mass concentration (c, g/dL), and the units of intrinsic viscosity $\backslash left(\backslash eta\; \backslash right)$ are deciliters per gram (dL/g), otherwise known as inverse concentration. ==Formulae for rigid spheroids== Generalizing from spheres to spheroids with an axial semiaxis $a$ (i.e., the semiaxis of revolution) and equatorial semiaxes $b$, the intrinsic viscosity can be written :$$ \left(\eta \right ) = \left( \frac \right) (J + K - L) + \left( \frac \right) L + \left( \frac \right) M + \left( \frac \right) N where the constants are defined :$$ M \ \stackrel\ \frac} :$$ K \ \stackrel\ \frac :$$ J \ \stackrel\ K \frac}} :$$ L \ \stackrel\ \frac + b^ \right)} \frac} :$$ N \ \stackrel\ \frac - b^ \right)} + b^ J_} The $J$ coefficients are the Jeffery functions :$$ J_ = \int_^ \frac \right)^}} :$$ J_ = \int_^ \frac \sqrt} :$$ J_^ = \int_^ \frac \sqrt} :$$ J_^ = \int_^ \frac \sqrt}} :$$ J_^ = \int_^ \frac \sqrt} :$$ J_^ = \int_^ \frac \sqrt}} 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Intrinsic viscosity」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.