In a variety of MEMS applications, the thin film of fluid responsible of squeeze-film damping results to be rarefied and, thus, not suitable to be modeled though the classical Navier-Stokes equation. The simplest way to consider fluid rarefaction is the introduction of a slight modification into its ordinary formulation, by substituting the standard fluid viscosity with an effective viscosity t...

A prospective study to evaluate efficacy and safety of partial exchange blood transfusion (PEBT) with normal saline or plasma was conducted in 30 symptomatic polycythemic newborns. Babies were randomly assigned to receive PEBT either with normal saline or plasma. Both groups were comparable in terms of birth weight, gestational age, preexchange hematocrit and viscosity. A significant fall in he...

In this paper we study the effects of small viscosity term and the far-field boundary conditions for systems of convection-diffusion equations in the zero viscosity limit. The far-field boundary conditions are classified and the corresponding solution structures are analyzed. It is confirmed that the Neumann type of far-field boundary condition is preferred. On the other hand, we also identify ...

Gauge theory gravity duality predicts that the shear viscosity of N = 4 supersymmetric SU(Nc) Yang-Mills plasma at temperature T in the limit of large Nc and large ’t Hooft coupling g 2 YMNc is independent of the coupling and equals to πN c T /8. In this paper, we compute the leading correction to the shear viscosity in inverse powers of ’t Hooft coupling using the α-corrected low-energy effect...

The global viscous damping rate in MST has been studied experimentally[1]. In these experiments a biased electrode was applied to a steady RFP plasma with Θ ∼ 1.8. This causes a radial electric field Er, which in turn induces an increased toroidal velocity in the discharge that reaches a steady value. When the electrode is removed, the toroidal flow is damped with a characteristic time τsd ∼ 0....

OBJECTIVE To study the effect of Jianpi Huoxue Jiedu (JPHXJD) prescription on prevention of the postoperative metastasis of gastric cancer and to observe the changes of immunity and whole blood viscosity after treatment. METHODS JPHXJD prescription and chemotherapy were administered to the treated group for 12 successive months, while only chemotherapy was given to the control group. RESULT...

We describe a simple microrheology method to measure the viscosity coefficients of lyotropic liquid crystals. This approach is based on the use of a rotating laser-trapped optically anisotropic microsphere. In aligned liquid crystals that have negligible effect on trapping beam's polarization, the optical torque is transferred from circularly polarized laser trapping beam to the optically aniso...

The effects of sucrose on the physical properties of cassava starch aqueous systems were investigated at varied concentrations of cassava starch (5-15% w/w) and sucrose (0-40% w/w). The peak viscosity and the final viscosity during a gelatinization-retrogradation cycle were determined based on a Rapid Visco Analyzer (RVA) test. Sucrose generally increased the viscosity values, while such increm...

A Mathematical model for the pulsatile blood flow through stenosed artery with the effect of body acceleration and slip velocity is proposed. Blood has been represented by casson fluid equation. Analytic expression for velocity, flow rate, wall shear stress and effective viscosity is derived. Flow variables with the change of parameters are represented graphically. The effect of pulsatility, st...

We discuss a cosmology in which cold dark-matter particles decay into relativistic particles. We argue that such decays could lead naturally to a bulk viscosity in the cosmic fluid. For decay lifetimes comparable to the present hubble age, this bulk viscosity enters the cosmic energy equation as an effective negative pressure. We investigate whether this negative pressure is of sufficient magni...