We study the ow of two immiscible uids of diierent density and mobility in a porous medium. If the heavier phase lies above the lighter one, the interface is observed to be unstable. The two phases start to mix on a mesoscopic scale and the mixing zone grows in time | an example of evolution of microstructure. A simple set of assumptions on the physics of this two{phase ow in a porous medium le...

Glasses, whe n heated , undergo a gradu a l co nt inuous change from so li ds to iiq uids over a rather Wide te mperature range. As a co nseq uence, it has bee n fo und necessar y to d efi ne certall1 te mperature r eference poin ts in t his t ra nsit io n range so t hat different glasses m ay be co mpared w:ith each other. These poin ts a re chose n to co rrespond to establi shed stages In t h...

1. Castro LA, Lundell RB, Krause PK, Gibson LE. Clinical experience in pemphigoid gestationis: report of 10 cases. J Am Acad Dermatol. 2006;55:823--8. 2. Juárez Fernández R, Medina Montalvo S, Trasobares Marugán L, García Rodríguez M. Herpes gestationis tratado con ciclosporina y corticosteroides. Actas Dermosifiliogr. 2001;92:302--4. 3. Jolles S. A review of high-dose intravenous immunoglobuli...

A 64-year-old male with a remote history of upper gastrointestinal (GI) bleeding secondary to peptic ulcer disease presented to the emergency department aft er having hematochezia. He denied having abdominal pain, hematemesis, rectal tenderness, or prior hemorrhoids. Upon arrival to the emergency department, the patient had a syncopal event while having another episode of hematochezia. Th e pat...

We present a numerical model for two-phase porous media ̄ow, where the phases are separated by a sharp interface. The model is based on a uni®ed pressure equation, and an advection equation for tracking a pseudo-concentration function. The zero-level set of this function de®nes the interface between the ̄uids. The ®nite element method is used for spatial discretization, with local grid re®nemen...

The ability to numerically simulate single phase and multiphase ow of uids in porous media is extremely important in developing an understanding of the complex phenomena governing the ow. The ow is complicated by the presence of heterogeneities in the reservoir at many diierent length scales and by phenomena such as diiusion and dispersion. These eeects must be eeectively modeled by terms in co...

We describe an experimental technique for the production of highly monodisperse emulsions (with minimum achievable polydispersities < 3%). The phase to be dispersed is introduced into a coowing, surfactant laden continuous phase via a tapered capillary. Drops detach from the capillary when the streamwise forces exceed the force due to interfacial tension. Drop size is a function of the capillar...

Case Study: I.C. is a 76-year-old woman who presented to the emergency room complaining of constipation for four days. During the 24 hours preceding the emergency room visit, I.C. experienced nausea, vomiting, and abdominal pain. Evaluation revealed a mass located in the sigmoid colon, and surgical resection was planned. Prior to surgery, I.C. had a short-term subclavian catheter inserted for f...

Traditionally, ocean upwelling has been studied mostly from observational data and analytical models of simpliied ow situations. In many areas of (geophysical) uid dynamics, numerical analysis has gradually gained importance and caught up with, if not bypassed, experimental simulations or observations. But, recent laboratory experiments show the very complicated nature of upwelling fronts and i...

introduction: refractory status epilepticus is a life-threatening disease in children wherein seizure movements don&apos;t response to first line anti convulsion drugs. this study reviewed risk factors, management and early outcome of children with refractory status epilepticus. methods: patients with refractory status epilepticus admitted in tabriz children&apos;s hospital between 2003 and 200...