necessary, simply close the Redon, prick the skin in another site, and reopen the drainage. It will suck the liquid without losing the negative pressure. This simple technique offers many advantages such as the availability of the required materials, lower risk of infection due to absence of material changing, a reduction in the risk of losing seromas (possible during the syringe changes), easi...

Complex liquid structures such as metallic foams were produced in a furnace that allowed in situ X-ray monitoring of the evolution of the structure and distribution of the liquid in the foam. The experiments were carried out during parabolic flights which provided varying levels of gravity. The evolution of the characteristic liquid fraction profiles due to gravity induced drainage was measured...

Understanding the phenomenon of droplet coalescence in nanoparticle suspensions is extremely important for the preparation of Pickering emulsions. A microfluidic platform, which can provide compulsive droplet collisions, was developed to imitate the droplet coalescence process in the early stages of emulsification. Microscope videos showed the variations in the droplet coalescence percentage, d...

Shear induced drainage of a foamy yield-stress fluid is investigated using MRI techniques. Whereas the yield stress of the interstitial fluid stabilizes the system at rest, a fast drainage is observed when a horizontal shear is imposed. It is shown that the sheared interstitial material behaves as a viscous fluid in the direction of gravity, the effective viscosity of which is controlled by she...

A theoretical model of foam as a consolidating continuum is proposed. The general model is applied to foam in a gravity settler. It is predicted that liquid drainage from foam in a gravity settler begins with a slow drainage stage. Next, a stage with faster drainage occurs where the drainage rate doubles compared to the initial stage. The experiments conducted within the framework of this work ...

Reexpansion pulmonary edema is a rare complication resulting from rapid emptying of air or liquid from the pleural cavity performed by either thoracentesis or chest drainage. Despite being infrequent, mortality may occur in up to 20% of cases and is attributed to the abrupt reduction in pleural pressure, especially as a result of extensive pneumothorax drainage or when there is long-term pulmon...

We probe the drainage and imbibition dynamics of foams in which the continuous aqueous phase is a transient gel-like network. To produce these foams, we provide a new method - a PVA (polyvinyl alcohol) solution is first foamed and then a cross-linker, Borax, is added, which binds reversibly to the PVA chains. The resulting foams are ultra-stable-over a month. We find that the typical time for g...

Aqueous foams are important in a variety of different applications, ranging from food and cosmetics to oil recovery, blast mitigation, and fire extinguishing. Well-established and emerging applications that use foams as an intermediate structure to produce macroporous materials are also widely used in the field of engineering to fabricate thermal insulating materials and low-weight structures, ...