We examine the stability and decay of the free boundary perturbations in a Hele-Shaw cell under the injection of fluid. In particular, we study the perturbations of spherical boundaries as time t ! C1. In the presence of positive surface tension, we examine both slow and fast injection rates. When fluid is injected slowly, the perturbations decay back to an expanding sphere exponentially fast, ...

The lymphatic system plays critical roles in tissue fluid homeostasis and immunity has been implicated the development of many different pathologies, ranging from lymphedema, spread cancer to chronic inflammation. In this review, we first summarize state-of-the-art imaging clinic advantages disadvantages these existing techniques. We then detail recent progress on technology, including advancem...

Steam injection is the most suitable of Enhanced Oil Recovery (EOR) methods to recover high viscosity oil. This is due to the capabilities of steam to reduce oil viscosity and increase the sweep capability of oil from the injection well toward the production well. Oil operating conditions in production should be match well with the operating condition target at the bottom of the production well...

We study the effect of the uncertainty in the induced microseismic event locations and origin times on the inverted fluid pressure diffusivity. We use a probabilistic physical model that directly ties fluid pressure in the subsurface during the injection to observations of induced microseismic events at the monitoring receiver array to track the propagation of uncertainty in the forward model a...

The pharmacokinetic profiles of imipenem after intramuscular (i.m.) and intravenous injections were examined in adult volunteers. Levels of imipenem in serum after i.m. injection of a microcrystalline suspension of imipenem-cilastatin (500 mg each) reached a peak (8.0 micrograms/ml) at 1.5 h after administration, and concentrations were maintained in excess of 1.5 micrograms/ml for 6 h. Serum e...

HCI continues to grow in popularity amongst commercial practitioners, many of whom have no formal training or education in HCI. Conferences, such as HCI 2007, offer an attractive means for practitioners to increase their knowledge and skills. However, many such practitioners can find it difficult to understand how research presentations relate to their specific needs. They often fail to make th...

eunsteady slip-flow of second grade non-newtonian electrically conducting fluid over an oscillating sheet has been considered and solved numerically. a second-order slip velocity model is used to predict the flow characteristic over the wall. with the assumption of infinite length in the x-direction, the velocity of the fluid can be assumed as a function of y and t, hence, with proper change va...

In this study, an innovative Low Temperature Combustion (LTC) system named Controlled Reactivity Compression Ignition (TCRCI) is presented, and a numerical optimization of the hardware operating parameters proposed. The studied combustion aims to reduce complexity Reaction engine (RCCI), replacing direct injection high reactivity fuel with heated low fuel. at actual state development its charac...

injection molding is one of the most important and common plastic formation methods. combination of modeling tools and optimization algorithms can be used in order to determine optimum process conditions for the injection molding of a special part. because of the complication of the injection molding process and multiplicity of parameters and their interactive effects on one another, analytical...