Numerical solutions based on standard finite volume method are presented for the study of heat transfer and fluid dynamic characteristics in turbulent flows behind a single sided backward-facing step. The calculation of the differential equations is performed using SIMPLE algorithm. For the turbulent quantities standard K-model is used. Predicted mean velocity profiles and reattachment lengths ...

PURPOSE Photoreceptor outer segments are in a dynamic state of membrane addition and disposal. This study was undertaken to determine how a standardized period of retinal detachment and varying periods of reattachment affect the renewal process. METHODS To investigate the effects that retinal detachment and reattachment may have on this process, the neural retina from 12 adult rhesus monkeys ...

In the feline model, retinal detachment initiates a cascade of changes that include photoreceptor-cell “deconstruction,” apoptotic death of some photoreceptors, neurite outgrowth from secondand third-order neurons, remodeling of photoreceptor synaptic terminals, and Müller-cell gliosis. We have previously shown that reattachment within 24 h halts or reverses many of these presumed detrimental c...

Traumatized anterior teeth require quick functional and esthetic repair. Tooth fragment reattachment is a simple and conservative clinical procedure to restore fractured anterior teeth. Different techniques of reattachment include enamel beveling, "v-" shaped internal enamel and dentin grooves, external chamfer, over contouring, and by placing fiber post, all of which were invasive methods. Thi...

OBJECTIVES To determine the reattachment rate of human retinal pigment epithelium (RPE) to different layers of human Bruch's membrane (BM). METHODS Explants of BM were prepared from 10 human cadaver eyes by removing native RPE. The RPE basal lamina, inner collagenous layer, elastin layer, and outer collagenous layer were exposed by sequentially removing each apical layer by mechanical or enzy...

PURPOSE To report the indications, anatomical outcomes, functional outcomes and limitations of descemetopexy with intracameral injection of isoexpansile perfluoropropane (14% C3F8) in eyes with Descemet's membrane (DM) detachment after cataract surgery. METHODS This retrospective non-comparative interventional case series included 67 eyes of 67 patients who underwent descemetopexy at a tertia...

Although fiber-reinforced posts have been widely used, they sometimes fail to obtain sufficient retention because of an extremely large canal space. To address this, several techniques have been introduced including relining of the fiber-reinforced posts. Here, we used a relined glass-fiber post to increase retention and fitness to the root canal in a crown reattachment case. The relining proce...

Replacement and reattachment of a newly detached composite tooth pontic is sometimes justified because of shape, color, function and patient satisfaction. The aim of this case report is to describe a new method using Rigid Tray Technique for exact replacement and reattachment of acceptable detached composite tooth pontic