The role played by patterned heating in reducing pressure losses within vertical conduits is investigated. generates flow separation structures which reduce the direct contact between stream and sidewalls, thereby limiting frictional resistance. This also modifies temperature field inducing a net buoyancy force may either assist or oppose gradient required to maintain fixed rate. If Reynolds nu...

Introduction: There are several options for cerebrospinal fluid diversion in patients with normal pressure hydrocephalus. Fixed and programmable valves, with or without anti-siphon devices, have been used for ventriculoperitoneal shunts and horizontal-vertical valves for lumboperitoneal shunts. Recently, a horizontal-vertical valve was developed for ventriculoperitoneal shunts and has been demo...

Aortic pressure rises as a dog's head is raised and falls as it is lowered. Systemic pressure change was 49% ± 3% of the hydrostatic pressure change at the carotid sinus, chosen as an arbitrary reference, so that pressure at the carotid sinus changed only 51% as much as it would have if systemic pressure had not changed. The responses to head raising and lowering were dynamically asymmetrical, ...

In this study, a 3D numerical modelling of a single vertical drains consolidation incorporating vacuum preloading considering both vertical and horizontal drainage is presented. The effects of nonlinear soil compressibility, varying permeability and vacuum pressure distribution along the drain are examined through the dissipation of average excess pore pressure and associated settlement. A sele...

This study investigated the role of duration and tornado-induced static pressure on peak pressures on a low-rise building. A tornado simulator was used to generate both translating and stationary vortices to measure pressure time series on a building model. Time-resolved velocity measurements were also made on the vortex to aid in the analysis. Past studies have suggested that peak pressures on...

BACKGROUND The Ocular Hypertension Treatment Study (OHTS) has shown that topical ocular hypotensive medication is effective in delaying or preventing the onset of primary open-angle glaucoma (POAG) in individuals with elevated intraocular pressure (ocular hypertension) and no evidence of glaucomatous damage. OBJECTIVE To describe baseline demographic and clinical factors that predict which pa...

We investigate the effect of a radial pressure bump in a protoplanetary disk on planetesimal formation. We performed the two-dimensional numerical simulation of the dynamical interaction of solid particles and gas with an initially defined pressure bump under the assumption of axisymmetry. The aim of this work is to elucidate the effects of the stellar vertical gravity that were omitted in a pr...

The goal of this study was to evaluate contact area and surface pressure as a result of different suture patterns in the treatment of anterior shoulder instability caused by a Bankart lesion. Loads were applied through the humeral head to the glenoid surface in the intact shoulder and after simple suture labral repair (n=10) and vertical mattress labral repair (n=9). Peak contact pressure, mean...

Despite a significant progress and numerous publications over the last few decades a comprehensive understanding of the process of waves’ excitation by wind still has not been achieved. The main goal of the present work was to provide as comprehensive as possible set of experimental data that can be quantitatively compared with theoretical models. Measurements at various air flow rates and at n...

We report the resultsof experimentsto study ion effects at the Advanced Light Source (ALS) in two pressure regimes. At the nominal pressure of 0.25 nTorr, we observe small vertical coherent beam oscillations for the nominal filling pattern (2.5~0 gap) that correlate with the expected ion frequency for nitrogen or carbon monoxide. The signals disappear for larger gaps in the filling pattern. We ...