We present large-eddy simulations (LES) of separation and reattachment of a flat-plate turbulent boundary-layer flow. Instead of resolving the near wall region, we develop a two-dimensional virtual wall model which can calculate the timeand space-dependent skin-friction vector field at the wall, at the resolved scale. By combining the virtual-wall model with the stretched-vortex subgrid-scale (...

This study employs a numerical simulation method that combines the plasma body force model based on electrostatics with Navier–Stokes equations to investigate coupling mechanism of flow fields induced by multistage dielectric-barrier discharge (MDBD) actuation. Compared conventional single-stage alternating-current DBD (AC-DBD) actuation, MDBD actuation provides higher intensity and larger cont...

H E direct approach to the problem of the mechanism of chromosome T breakage and reattachment-namely, an analysis of the end results following radiation-has not as yet yielded a wholly satisfying answer, although our understanding of the limitations within which the mechanism operates has been considerably broadened, and its complexity has been recognized. An indirect approach has been made by ...

purpose : our purpose is to determine the structural outcome of 25-gauge vitrectomy in addition to scleral buckling in stage 5 retinopathy of prematurity (rop). methods : in a prospective interventional case series, 21 eyes with stage 5 rop underwent 25-gauge vitrectomy and scleral buckling. demographic data, disease activity (having plus disease or neovascularization) and the procedure manner ...

PURPOSE To compare the surgical results of vitrectomy with and without scleral buckling for rhegmatogenous retinal detachment (RD). METHODS Fifty-one patients with rhegmatogenous retinal detachment with proliferative vitreoretinopathy (PVR) at different stages were submitted to pars plana vitrectomy as the primary surgery, 23 patients (45.09%) with scleral buckle (group I) and 28 (54.90%) wit...

Research has shown that productivity is mediated by an individual’s ability to detach from their work at the end of the day and reattach with it when they return the next day. In this paper we explore the extent to which structured dialogues, focused on individuals’ work-related tasks or emotions, can help them with the detachment and reattachment processes. Our inquiry is driven with SwitchBot...

Preliminary results are reported from an experimental study of the interaction between turbulence, sediment transport and bedform dynamics over the transition from dunes to upper stage plane beds. Over the transition, typical dunes changed to humpback dunes (mean velocity 0.8 ms-', depth 0.1 m, mean grain size 0.3 mm) to nominally plane beds with low relief bed waves up to a few mm high. All be...

PURPOSE To determine the morphology of human retinal pigment epithelium (RPE) after reattachment to different ultrastructural layers of human Bruch's membrane (BM). METHODS Bruch's membrane explants were prepared from eyes of 23 human donors (age range, 11-89 years). The basal lamina of the RPE, inner collagenous layer, and elastin layer were removed sequentially by mechanical and enzymatic t...

BACKGROUND Retinal detachment is more common among uveitis patients than in the general population. Here, we aimed to assess the prevalence of rhegmatogenous retinal detachment (RRD) in a uveitis population. METHODS We retrospectively studied 851 uveitis patients, recording characteristics such as uveitis duration, anatomical location, and cause; RRD occurrence; proliferative vitreoretinopath...

A two-temperature thermal non-equilibrium model is developed and applied to the threedimensional and time-dependent simulation of the flow inside a DC arc plasma torch. A detailed comparison of the results of the non-equilibrium model with those of an equilibrium model is presented. The fluid and electromagnetic equations in both models are approximated numerically in a fully-coupled approach b...