Toothpastes are definitely one of the indispensable elements of oral health care. They are produced to serve multiple purposes and possess complex chemical structures. Slight abrasion, froth, sweetening, bleaching, prevention of plaque, calculus and decay are properties expected from an ideal toothpaste. In recent years, allergic reactions have started to appear more frequently in dental practi...

We introduce a modified topological model for the evolution of twodimensional soap froth. The topological rearrangement associated with a T2 process is deterministic; the final topology depends on the areas of the neighboring cells. The new model gives agreement with experiments in the transient regime, where the previous models failed qualitatively, and also improves agreement in the scaling s...

was injected. The patient did not feel any uneasiness at the time of injection, but after two or three minutes he complained of a burning sensation all over his body and his face and lips became swollen and congested, and his eyelids puffy. He showed signs of suffocation, and froth came out from his mouth. The pulse was almost imperceptible and I at once gave him an injection of solution of adr...

The two-dimensional viscous froth model is a simple tractable model for foam rheology and coarsening. It includes, but is not confined to, the quasistatic regime. Here we present a detailed analysis and implementation of the model, illustrated with various examples. With certain simplifying assumptions, it provides significant insight into strain-rate-dependent effects in foam rheology and else...

The forms resulting from growth processes are highly sensitive to the nature of the driving impetus, and to the local properties of the medium, in particular, its isotropy or anisotropy. In turn, these local properties can be organized by growth. Here, we consider a growing plant tissue, the shoot apical meristem of Arabidopsis thaliana. In plants, the resistance of the cell wall to the growing...

A dynamic fundamental model was developed linking processes from the microscopic scale to the equipment scale for batch froth flotation. State estimation, fault detection, and disturbance identification were implemented using the extended Kalman filter (EKF), which reconciles real-time measurements with dynamic models. The online measurements for the EKF were obtained through image analysis of ...

Foam dynamics is gaining interests within Computational Fluid Dynamics and Computer Graphics. We believe that liquid foam, or froth, is the next evolution in the field of fluid dynamics. Froth is the natural phenomenon of bubbles that arise due to nucleation of gas in liquids. As the physics of foams in two dimensions is better understood this thesis begins the journey of physics-based foam dyn...