We report distinct growth regimes of hollow silica fibers formed by hydrodynamic injection of cupric sulfate into silicate solution. The tubes grow either steadily along a continuous jet of buoyant solution or through relaxation oscillations that are governed by chemo-mechanical processes. The dependence of the oscillation period on flow rate and copper concentration is explained in the framewo...

A granular gas subjected to a permanent injection of energy is described by means of hydrodynamic equations derived from a moment expansion method. The method uses as reference function not a Maxwellian distribution f(M) but a distribution f(0)=Phif(M), such that Phi adds a fourth cumulant kappa to the velocity distribution. The formalism is applied to a stationary conductive case showing that ...

Atomistic molecular dynamics simulations reveal the formation of nanojets with velocities up to 400 meters per second, created by pressurized injection of fluid propane through nanoscale convergent gold nozzles with heating or coating of the nozzle exterior surface to prevent formation of thick blocking films. The atomistic description is related to continuum hydrodynamic modeling through the d...

This review highlights on-line sample preconcentration by large-volume sample stacking with an electroosmotic flow pump (LVSEP) in microscale electrophoresis. LVSEP requires only a hydrodynamic sample injection into the whole capillary/microchannel and a constant voltage application, i.e., without polarity switching, providing an efficient sensitivity enhancement with a relatively easy experime...

Methods Based on a computed tomography angiography of the aorta, we made a delrin ring, keeping the anatomical characteristics of the aortic annulus. A matrix one following we made from stainless steel with the shape of the three cusp aortic valve, followed by preparation of the injection of liquid polyurethane segmented (SPU), using a esterolitografia technique. In vitro tests: The materials u...

A capillary electrophoresis method has been established for the determination of triptonide and triptolide in Multi-glycosides Tripterygium wilfordii tablets. Capillary separation was carried out by using 0.01mol L borax + 0.02 mol L boric acid + 0.02 mol L SDS (pH = 8.0) as the buffer, a fused – silica capillary tube column (60.2 cm × 75μm id. 52.6 cm of effective length) as the separation cha...

INTRODUCTION The aim of this paper is to present a noninvasive method for quantifying the spinal canal hydrodynamic compliance from Magnetic Resonance Imaging (MRI) measurements of volumetric cerebrospinal fluid (CSF) flow. The spinal canal compartment contributes to the overall compliance of the craniospinal system. Thus it plays an important role in regulating craniospinal hydrodynamics and i...

objective(s):iron oxide nanoparticles have found prevalent applications in various fields including drug delivery, cell separation and as contrast agents. super paramagnetic iron oxide (spio) nanoparticles allow researchers and clinicians to enhance the tissue contrast of an area of interest by increasing the relaxation rate of water. in this study, we evaluate the dependency of hydrodynamic si...

West Nile virus causes fatal encephalitis in humans, mice, and other vertebrates. In the present study, we demonstrate that small interfering RNAs (siRNAs) inhibit West Nile virus replication in vitro. Moreover, the administration of siRNAs to mice by hydrodynamic injection 24 h before challenge with an intraperitoneal inoculum of West Nile virus reduced the viral load and afforded partial prot...

The paper focuses on the data collected from the mixing of shear thinning non-Newtonian fluids in a cylindrical tank by a Rushton turbine. The data presented are obtained by using Computational Fluid Dynamics (CFD) simulation of fluid flow field in the entire tank volume. The CFD validation data for this study is reported in the research article 'Numerical investigation of hydrodynamic behavior...