The general observation of Marcus inverted region (MIR) for bimolecular electron-transfer (ET) reactions in different viscous media, e.g., micelles, reverse micelles, vesicles, ionic liquids, DNA scaffold, etc. has been doubted in some recent publications arguing limitations in Stern-Volmer (SV) analysis to account for the static and transient stages of quenching in these slow diffusing media. ...

Various forms of the viscous force caused by collision-induced parallel viscous stresses within an inhomogeneous magnetized plasma are presented. New forms are proposed for initial value extended MHD codes to capture the “fast” (Braginskii) collisional viscous force effects on short time scales and multi-collisionality regime “residual” viscous forces on collision time scales and longer in axis...

In this work, free convection of Cu-water nanofluid in an enclosure by considering internally heat generated in the porous circular cavity and the impacts of viscous dissipation are numerically evaluated by control volume finite element method (CVFEM). The outer and inner sides of the circular porous enclosure are maintained at a fixed temperature while insulating the other two walls. The impac...

The migration of a planet through a gaseous disc causes the locations of their resonant interactions to drift and can alter the torques exerted between the planet and the disc. We analyse the time-dependent dynamics of a non-coorbital corotation resonance under these circumstances. The ratio of the resonant torque in a steady state to the value given by Goldreich & Tremaine (1979) depends essen...

Recent investigations on the collapse and growth of macroscopic cavity regions in a granular material due to viscous flow have revealed the possible mechanism of the occurrence of natural disasters such as landslides, collapses of riverbanks and cliffs. We have already shown both theoretically and experimentally a significant effect of flow concentration into the macroscopic cavity regions in a...

Statistics of the streamwise velocity component in fully-developed pipe flow are examined for Reynolds numbers in the range 5.5 x 10 < Reo < 5.7 x 10. The second moment exhibits two maxima: one in the viscous sublayer is Reynoldsnumber dependent while the other, near the lower edge of the log region, is also Reynolds-number dependent and follows roughly the peak in Reynolds shear stress. The be...

Cherkaev-Gibiansky and Hashin-Shtrikman variational principles are utilized in order to obtain rigorous bounds on the shear modulus of two-phase viscoelastic composites in three dimensions. The simplest class of bounding regions is composed of circles in the complex plane containing four points related to the viscoelastic moduli of the constituents. By taking the intersection of all such circle...

We investigated the neural processes, with a focus on subcortical circuits, which govern corrective submovements in visually targeted action. During event-related fMRI, subjects moved a cursor to capture targets presented at varying movement amplitudes. Movements were performed in a rehearsed null and a novel viscous (25% random trials) torque field. Movement error feedback was provided after e...

introduction: one of the most common syndromes in parkinson&apos;s disease (pd) is rigidity. currently, an index is used to evaluate the level of pd by the clinical measurement of rigidity in the upper extremity. the index uses a subjective method called unified parkinson&apos;s disease rating system (updrs). the subjective nature of this method makes the influence of physician in the measureme...

this paper addresses the combined effects of couple stresses, thermal radiation, viscous dissipation and slip condition on a free convective flow of a couple stress fluid induced by a vertical stretching sheet. the cogley- vincenti-gilles equilibrium model is employed to include the effects of thermal radiation in the study. the governing boundary layer equations are transformed into a system o...