During cataract surgery the clouded lens is broken up by phacoemulsification. The iris can become highly mobile and could be entrained phacoemulsification probe, under a condition known as intraoperative floppy syndrome (IFIS). In this study we explore mechanism of IFIS during phacoemulsification-based using fluid-structure interaction (FSI) simulations. As first its kind, developed simplified ...

background: neuroectodermal tumors (pnet) are malignant small cells neoplasm mainly occurring in children but can occur at any age. extensive bleeding into the pleural cavity is rare in children. hemothorax would be compatible with a variety of congenital anomalies including sequestration, patent ductus artreiosus, and pulmonary arteriovenous malformation. case report: a 2.5-years old girl who ...

The emulsifying characteristics of pectins isolated from six different okra genotypes were investigated and their structure-function relationships have been evaluated. Emulsion formation and stabilization of acidic oil-in-water emulsions (pH 2.0, φ = 0.1) were studied by means of droplet size distribution, ζ-potential measurements, viscometry, interfacial composition analysis and fluorescence m...

We consider two-dimensional dispersions of droplets of isotropic phase in a liquid with an XY -like order parameter, tilt, nematic, and hexatic symmetries being included. Strong anchoring boundary conditions are assumed. Textures for a single droplet and a pair of droplets are calculated and a universal droplet-droplet pair potential is obtained. The interaction of dispersed droplets via the or...

Institute of Process Equipment, College of Zheda Road No. 38, Hangzhou, 310027, [email protected] John A. Paulson School of Engineering an Cambridge, Massachusetts, 02138, USA. E-m Australian Institute for Bioengineering a Queensland, St Lucia, QLD, Australia 4072 State Key Laboratory of Fluid Power and M Zheda Road No. 38, Hangzhou, 310027, Ch † Electronic supplementary information produced...

Sugar fatty acid esters are practical importance and have a variety of applications that include surfactants and as an emulsifying agent. In this study, we report glucose stearate synthesis using lipase-Fe3O4 nanoparticles catalyst. The influence of various reaction factors, such as silica gel concentration, molar ratio of sugar/acid, reaction temperature and speed of agitation on esterificatio...

We present a real–time simulation of the phaco-emulsification task in a virtual reality training system for cataract surgery. Phaco–emulsification consists in breaking in small fragments and completely removing the eye crystalline lens by employing an ultra–sound tool called phaco–emulsificator. Our approach employs a mesh-less shape– based dynamic algorithm integrated with a simplex geometry r...

Gigaporous poly(styrene-divinyl benzene) microspheres made via the surfactant reverse micelles swelling method had a controllable pore size of 100–500 nm. These microspheres had unique advantages in biomacromolecule separation and enzymes immobilization. However, the obtained microspheres adhered to each other in the preparation process. Though the weak aggregation could be re-dispersed easily ...

We introduce an emulsification technique that creates monodisperse double-emulsion drops with a core–shell geometry having an ultra-thin wall as a middle layer. We create a biphasic flow in a microfluidic capillary device by forming a sheath flow consisting of a thin layer of a fluid with high affinity to the capillary wall flowing along the inner wall of the capillary, surrounding the innermos...

Relationship between the HLB value of oil and emulsion stabilization is studied. When emulsification system was close to that oil, exhibited best stability.