This paper presents a series of experiments focused on the displacement viscoplastic fluids by various Newtonian and non-Newtonian from long horizontal, eccentric annulus. The flow regimes range high Reynolds number laminar through to fully turbulent. These represent primary cementing operation in horizontal well. main objective our is gain insight into role regime fluid-fluid flows relevance c...

Introduction: Although a significant fraction the mascon gravity anomalies can be explained by the flexural support of the mare basalts within the basins, in some cases this explanation does not suffice. A number of the lunar basins exhibit mascons in excess of that which can be accounted for by the maria, and some basins possess central gravity anomalies yet lack mare fill altogether [1]. An e...

We consider the equation ??w=w3 with zero boundary conditions on planar domains that are conformal images of annuli. Starting an approximate solution, we prove there exists a true solution nearby. Our approach is computer-assisted. It involves simultaneous and accurate control (inverse) Dirichlet Laplacean, nonlinearities, mappings.

Summary While total vessel length is widely recognized as being of fundamental functional significance, opinion more divided regarding the potential importance element length, a variable that Sherwin Carlquist regarded functionally significant. We show can, predicted, affect resistance to deformation. Perforation plates are locally thickened annuli, so tubes with annuli resist deformation bette...

Certain lamellar structures have been described from snail (Otala) and clam (Spisula) oocytes, the acinar cells of amphibian (Ambystoma) pancreas, and from rat spermatids. These structures are alike in possessing numerous rings or annuli, resembling those in the nuclear membrane. Thus the name "annulate lamellae" has been proposed for them. It is suggested that they may function in the transfer...