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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 Hydrodynamic radius ： ウィキペディア英語版 Hydrodynamic radius The hydrodynamic radius of a macromolecule or colloid particle has two meanings. Some books use it as a synonym for the Stokes radius. 〔 Section 6.4 page 290. 〕 Other books define a theoretical hydrodynamic radius $R\_$. They consider the macromolecule or colloid particle to be a collection of $N$ subparticles. This is done most commonly for polymers; the subparticles would then be the units of the polymer. $R\_$ is defined by :$$ \frac}\ \frac \frac is the distance between subparticles $i$ and $j$, and where the angular brackets $\backslash langle\; \backslash ldots\; \backslash rangle$ represent an ensemble average. 〔 Chapter 10, Section 7.4, pages 415-417. 〕 The theoretical hydrodynamic radius $R\_$ was originally an estimate by John Gamble Kirkwood of the Stokes radius of a polymer. The theoretical hydrodynamic radius $R\_$ arises in the study of the dynamic properties of polymers moving in a solvent. It is often similar in magnitude to the radius of gyration. ==Notes== 〔 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「Hydrodynamic radius」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.