We study various dynamical properties (winding angles, areas) of a set of harmonically bound Brownian particles (monomers), one endpoint of this chain being kept fixed at the origin 0. In particular, we show that, for long times t, the areas {Ai} enclosed by the monomers scale like t1/2, with correlated gaussian distributions. This is at variance with the winding angles {θi} around fixed points...

Linear viscoelastic properties for a dilute polymer solution are predicted by modeling the solution as a suspension of non-interacting bead-spring chains. The present model, unlike the Rouse model, can describe the solution’s rheological behavior even when the solvent quality is good, since excluded volume effects are explicitly taken into account through a narrow Gaussian repulsive potential b...

We report chain self-diffusion and viscosity data for sodium polystyrene sulfonate (NaPSS) in semidilute salt-free aqueous solutions measured by pulsed-field gradient NMR rotational rheometry, respectively. The molecular weight of NaPSS is characterized using five techniques. Relationships between Mw the intrinsic diffusion coefficient excess salt are established. These helpful accurate determi...

We report on two recent advances in the modelling of viscoelastic polymers: (i) a new constitutive model which combines the virtual stick-slip continuum “molecular-based” ideas of Johnson and Stacer with the Rouse bead chain ideas; (ii) a two-dimensional version of a model that accounts for stenosis-driven shear wave propagation in biotissue.

We calculate the length distribution of linear micelles modeled as living bead-spring chains from a simple mesoscopic model. Within the framework of statistical mechanics an expression for the free energy is used. For the case of Rouse chains the length distribution and rheological properties we evaluate as functions of the micellar concentration, the scission energy, and the strength of an app...

Exploration for " Big Bones " at Lower Blue Licks Spring, Kentucky: Willard Rouse Jillson 555 The Immunizing Effect in the Action of TrypanocidalAgents: Clifford S. Leonard .................................... 556 Thiophene-free Benzene: B.J.Graul and J. V. Karabinos .................................... 557 Pyridylmereuric Acetate as a Prophylactic in Fisheries Management: Willis M. Van Horn an...

This paper describes the typing system used by the ICE 2.0 Tcl compiler[Rouse]. The typing system tracks the usage of variables and allows the compiler to reduce the number of instructions required to carry out Tcl instructions. It will also allow future improvements in code emission by making it possible to carry out standard compiler analyses and optimizations[Aho].