Thousands of cardiac failure patients per year in the United States could benefit from long-term mechanical circulatory support as destination therapy. To provide an improvement over currently available devices, we have designed a fully implantable axial-flow ventricular assist device with a magnetically levitated impeller (LEV-VAD). In contrast to currently available devices, the LEV-VAD has a...

BACKGROUND Elastic stable intramedullary nailing (ESIN) is accepted widely for treatment of diaphyseal femur fractures in children. However, complication rates of 10 to 50 % are described due to shortening or axial deviation, especially in older or heavier children. Biomechanical in vitro testing was performed to determine whether two modified osteosyntheses with end caps or a third nail could ...

Axial length (AL) is a significant indicator of eyeball development, but reports on the overall status of axial development in congenital cataract (CC) patients and its relationship with patient demographics, such as age, sex, and laterality, are rare. We prospectively investigated the AL of 1,586 patients ≤ 18 years old and undergoing cataract surgery in China from January 2005 to December 201...

We address the measurement and correction of fan distortion in optical coherence tomography (OCT). This effect arises from the scanning system configuration and prevents one, in general, from obtaining quantitative topographic data from OCT. Computer simulations allowed us to quantify the effect and evaluate its dependence on the scanning mirror separation and design of the collimating lens, as...

A brief review of recent literature on riser design is presented and a concise description of the design process is given. Effects of hydrodynamical design parameters on marine flexible riser design are then reviewed. Riser dynamic analyses are described which substantiate design criteria for the selection of riser configuration in deep and shallow water. The results of dynamic analyses using c...

bridges in transition metal clusters are unreactive as a class, they would require special activation if they were to be involved in oxidations or 0-0 bond formation. We propose that the unusual electronic configuration of the Mn, cluster of the WOC is an expression of this activation. Formation of the activated (dn)3(dx2-,2)' electron configuration may also be explained if the Mn"' ions have o...

This article investigates the physical features of static axial sources that produce complexity within matter configuration perspective f(R, T) theory, where R is curvature invariant and T identifies trace energy tensor. In this case, contracted Bianchi identities effective as well normal are used to develop conservation equations. We split tensor compute structure scalars, involving aspects so...

We investigate the steady-state fluid--structure interaction between a Newtonian fluid flow and deformable microtube in two novel geometric configurations arising recent microfluidics experiments. The first configuration is cylindrical fluidic channel surrounded by an annulus of soft material with rigid outer wall, while second one extruded from rectangular slab material. In each configuration,...

Overlapping rotor systems are currently used on some urban flight vehicles and will become increasingly common in future electric propulsion, since they provide one of the most compact platform volumes per thrust. This paper presents results a detailed experimental investigation co-axial contra-rotating configuration at hover condition. A range diameters considered study 14-18 inch Tip Mach num...

The three dimensional nature of cylindrical magnetic nanowires has opened a new way to control the domain configuration as well as the magnetization reversal process. The pinning effect of the periodic diameter modulations on the domain wall propagation in FeCoCu individual nanowires is determined by Magnetic Force Microscopy, MFM. A main bistable magnetic configuration is firstly concluded fro...