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Moto relativo di gas e liquido. Nota II - Flusso in equicorrente ascendente entro tubi verticali.
No full textThe tumbling or flow-aligning nature of nematics as predicted from the slightly bending rod molecular model
No full textOrigin of Shear Thinning in Unentangled Polystyrene Melts
No full textNonlinear shear data of an unentangled polystyrene melt [ Santangelo, P. G.; et al. J. Rheol. 2001, 45(2), 583-594 ] are compared to Brownian dynamics predictions of Fraenkel chains. All parameters needed to perform the comparison are obtained from the known molar mass, zero-shear viscosity, and from older data for the linear glassy contribution [ Inoue, T.; et al. Macromolecules 1991, 24(20), 5670-5675 ]. Comparison reveals that the magnitude of shear thinning of the unentangled melt cannot be explained unless account is taken of the flow-induced reduction of the monomeric (Kuhn segment) friction coefficient
Moto relativo di gas e liquido. Nota II - Flusso in equicorrente ascendente entro tubi verticali.
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Two Fluid Theory of Polymer Migration, Analysis of Migration Experiments across a Permeable Wall
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