Interactions between particles and bubbles have been cornerstone for the successful applications of froth flotation to beneficiations minerals or coal. Particle-bubble interactions are highly physio-chemical processes on basis surface science hydrodynamics. Though these two aspects deeply interwoven, we focus discussions effects turbulence bubbles, i.e., collision, attachment detachment. It has...

PURPOSE To examine the correlation, if any, between fibrinogen plasma levels (FPL) and the clinical features of rhegmatogenous retinal detachment (RRD). METHODS FPL were measured preoperatively in 33 patients with primary RRD. Patient characteristics and detachment features such as the numbers of breaks and the extent of the detachment were recorded; RESULTS No statistically significant cor...

This study examined whether a higher level of psychological detachment during non-work time is associated with better employee mental health (Hypothesis 1), and examined whether psychological detachment has a curvilinear relation (inverted U-shaped pattern) with work engagement (Hypothesis 2). A large cross-sectional Internet survey was conducted among registered monitors of an Internet survey ...

The success of flotation operation depends upon the thriving interactions of chemical and physical variables. In this work, the effects of particle size, bubble size, and collector dosage on the bubble loading in a continuous flotation column were investigated. In other words, this work was mainly concerned with the evaluation of the true flotation response to the changes in the operating varia...

We review recent attempts to elucidate the phenomenon of sonoluminescence in terms of fundamental principles. We focus mainly on the processes which generate the light, but other relevant facts, such as the bubble dynamics, must also be considered for the understanding of the physics involved. Our emphasis is on single bubble sonoluminescence which in recent years has received much attention, b...

This paper presents a complete set of coupled equations that govern the bubble transport in three-dimensional gravity-driven flow. The model accounts for bubble growth or shrinkage due to pressure and temperature changes as well as for multiple gas diffusion in and out of the bubbles but neglects bubble coalescence, break-up, and nucleation. The model applies to glass melting furnaces but it co...

We have learned from other contributions to this conference that it can be diffi cult to pin down whether a particular rise in asset prices constitutes a bubble, especially at the time it is happening. It may be easier ex post – the defi nition that says that you know youʼve had an asset bubble when the price has just fallen by 40 per cent. Despite these uncertainties, I think it makes sense to...