by means of he's homotopy perturbation method (hpm) an approximate solution of velocity eld is derived for the ow in straight pipes of non-newtonian uid obeying the sisko model. the nonlinear equations governing the ow in pipe are for- mulated and analyzed, using homotopy perturbation method due to he. furthermore, the obtained solutions for velocity eld is graphically sketched and compared w...

I n 2004, about 3 million people died of AIDS [1]. Because sexual intercourse accounts for the vast majority of HIV transmissions worldwide, it is important to understand the events that occur in the genital or rectal mucosa during transmission. Here we dissect a number of factors in the transmitter and recipient that are relevant before, during, and after transmission. We weigh the evidence su...

upper endoscopy is a common procedure for the diagnosis and treatment of upper digestive tract diseases. the increasing number of pediatric gastrointestinal procedures has led to increasing attention on the safety and efficacy of medications used for sedation during the procedure. this randomized blinded interventional study was designed to compare the effect of oral midazolam with intravenous ...

This paper brie®y reviews some recent work demonstrating the partial breakdown of the colloidal ®uid $ atomic ®uid analogy. The success of liquid state theory for atomic ®uids stems in part from the van der Waals picture, where steric interactions dominate the structure, and attractive interactions can be added as a perturbation. For complex ®uids described by e¬ective potentials, this picture ...

Simulation of particles in uids is computationally a very challenging problem. These simulations require the solution of nonlinear Navier-Stokes equations for uids coupled with Newton's equations for particle dynamics, which in turn rely on eecient solution of large sparse linear systems. These linear systems are nonsymmetric and indeenite causing extreme diiculties for commonly used preconditi...

We consider the ow of two immiscible uids of diierent mobility in a porous medium. If the more mobile uid displaces the other, a macroscopically sharp interface is unstable. By growing a network of ngers on a mesoscopic scale, the two phases mix on a macroscopic scale. We are interested in the evolution of this mixing zone. We show that the eeect of a large but nite mobility ratio is strong eno...

Multigrid methods have proven to be eecient methods for solving partial diier-ential equations (especially those of elliptic type). There is also growing experience with multigrid solvers for uids problems, e.g., the Stokes and Navier-Stokes equations (using both nite element and nite diierence discretizations). It is also well known that at the heart of any multigrid method is the smoother. In...

Recombinant human macrophage colony-stimulating factor (rhM-CSF) is a hematopoietic growth factor that stimulates the growth, differentiation, proliferation, and activation of cells of the monocyte/macrophage lineage. rhM-CSF was administered t o rabbits and nonhuman primates to evaluate effects on cholesterol homeostasis. Decreases in plasma cholesterol concentrations were observed during rhM-...