In premature neonates, with birth weights between 550 and 1250 g, short-term orotracheal intubation is routine. Despite the use of surfactant and steroids, 20% of these premature neonates develop pulmonary dysplasia, which requires an unpredictable ventilation period with an orotracheal tube.' 2 Placement of the orotracheal tube may extend from hours to months, and may result in midface changes...

Cylindrical microparticle transport and deposition from electrokinetic microflow in a 90 degree bend have been numerically simulated. Under the effect of dielectrohporetic force, gravity and stokes force, it’s found that microparticles with larger size deposit on the lower region of the bend’s outer wall. An exponential curve of deposition efficiency versus the product of stokes number and shap...

Flow in river bends is associated with generation of secondary flows that leads to a rather complicated flow pattern around bridge piers located the bend. In this study, patterns rectangular and oblong models collar at 90o angle 180-degree sharp bend an experimental plume were investigated. The 3D velocity data collected using Vectrino velocimeter. results indicated presence pier caused more in...

Magnetic poly (D,L-lactide-co-glycolide) (PLGA)/lipid nanoparticles (MPLs) were fabricated from PLGA, L-α-phosphatidylethanolamine (DOPE), 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-amino (polyethylene glycol) (DSPE-PEG-NH2), and magnetic nanoparticles (NPs), and then conjugated to trans-activating transcriptor (TAT) peptide. The TAT-MPLs were designed to target the brain by magnetic gui...

In this paper we discuss the stability of a uniform Fréedericksz configuration in highly anisotropic thin nematic films. We show that the Fréedericksz transition in a bend geometry is at least two-dimensional, and it occurs at field strengths lower than the known classical threshold.

A novel vertical translational microactuator based on thin-film piezoelectric actuation is presented, using a set of four compound bend-up/bend-down unimorphs to produce translational motion of a moving platform or stage. The actuation material is a chemical-solution deposited lead-zirconate-titanate (PZT) thin film. Prototype designs have shown as much as 120 μm of static displacement, with 80...