Pore-Scale Modeling of the Effect of Wettability on Two-Phase Flow Properties for Newtonian and Non-Newtonian Fluids.

The Darcy-scale properties of reservoir rocks, such as capillary pressure and relative permeability, are controlled by multiphase flow properties at the pore scale. In the present paper, we implement a volume of fluid (VOF) method coupled with a physically based dynamic contact angle to perform pore-scale simulation of two-phase flow within a porous medium. The numerical model is based on the resolution of the Navier-Stokes equations as well as a phase fraction equation incorporating a dynamic contact angle model with wetting hysteresis effect.

Neonatal ophthalmia in Mali.

A newborn 3 hours old newborn presented bilateral eyelid edema with erythema and inflammatory hypertrophy of the palpebral conjunctiva. PCR of the conjunctival swabbing showed the presence of Chlamydia trachomatis DNA. Treatment with erythromycin suspension 125 mg/5 ml was initiated, supplemented by topical application of oxytetracycline ointment 1% and Azyter eye drops.

[Epidemiological aspects of autism in mental health care structures in the district of Bamako, Mali].

Aims: Autism is a global and early developmental disorder that appears before the age 3 years old. It is characterized by a triad of symptoms affecting the following domains: social interaction, verbal and non-verbal communication, imagination and behaviors. This work aimed to determine the frequency of autism and to identify its risk factors in Malians aged 0-17 years old.

The Effect of Heat Transfer and Polymer Concentration on Non-Newtonian Fluid from Pore-Scale Simulation of Rock X-ray Micro-CT.

Most of the pore-scale imaging and simulations of non-Newtonian fluid are based on the simplifying geometry of network modeling and overlook the fluid rheology and heat transfer. In the present paper, we developed a non-isothermal and non-Newtonian numerical model of the flow properties at pore-scale by simulation of the 3D micro-CT images using a Finite Volume Method (FVM). The numerical model is based on the resolution of the momentum and energy conservation equations.

Predictive Model of Supercooled Water Droplet Pinning/Repulsion Impacting a Superhydrophobic Surface: The Role of the Gas-Liquid Interface Temperature.

Dynamical analysis of an impacting liquid drop on superhydrophobic surfaces is mostly carried out by evaluating the droplet contact time and maximum spreading diameter. In this study, we present a general transient model of the droplet spreading diameter developed from the previously defined mass-spring model for bouncing drops. The effect of viscosity was also considered in the model by definition of a dash-pot term extracted from experiments on various viscous liquid droplets on a superhydrophobic surface.