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Titlebook: Nonlinear Phenomena in Flows of Viscoelastic Polymer Fluids; A. I. Leonov,A. N. Prokunin Book 1994 Chapman & Hall 1994 Polyethylen.Polyiso

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31#
發(fā)表于 2025-3-26 22:05:23 | 只看該作者
ntified some central deficiencies: the tendency in some of the literature to see economic growth as an end in itself; the failure to specify what constitutes development and what are the social objectives of economic growth; and giving priority to the needs of the economy and of the state over those
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發(fā)表于 2025-3-27 04:03:33 | 只看該作者
Book 1994ncentrated solutions of such flexible-chain polymers as polyethylene, polyisobutylene and polypropylene, all of which are widely used in polymer processing. These polydisperse polymers vary greatly, from batch to batch, in their mechanical properties and 20% variation in a property is believed to be
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發(fā)表于 2025-3-27 14:31:01 | 只看該作者
lts and concentrated solutions of such flexible-chain polymers as polyethylene, polyisobutylene and polypropylene, all of which are widely used in polymer processing. These polydisperse polymers vary greatly, from batch to batch, in their mechanical properties and 20% variation in a property is beli
36#
發(fā)表于 2025-3-27 17:56:26 | 只看該作者
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發(fā)表于 2025-3-28 00:07:06 | 只看該作者
Other Constitutive Equations for Elastic Liquids,lows as has been demonstrated in numerical simulations since the early 1970s. Because experiments with polymeric fluids also demonstrate new kinds of instabilities as compared with Newtonian fluid mechanics, there is a lot of speculation in the literature about relations between the instabilities in
38#
發(fā)表于 2025-3-28 03:33:01 | 只看該作者
On Hardening Phenomena in Flows of Polymeric Liquids,ated to an increase in the relaxation time under increasing elastic strains, is also discussed. Also considered is the possible mechanism of distortions of potential barriers by imposed stress which results in decreasing the relaxation time with an increase in the elastic strain.
39#
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