Bubbles bubble-free growth

Bubble diameter, in foams, 12 2 Bubble-free oxygenation, 15 716 Bubble growth, 11 806 Bubbleless turbulent fluid-bed reactor design, 11 821... 

Wagner R Lehmann J (1988) The growth and productivity of recombinant animal cells in a bubble-free aeration system. Trends in Biotechnology 6 101-104. 

S. S. Kutateladze and 1.1. Gogonin, Growth Rate and Detachment Diameter of a Vapour Bubble in Free Convection Boiling of a Saturated Liquid, High Temperature (17) 667-671,1979. 

Part of the gas can escape from the solution at a specific concentration and a fixed temperature, as the pressure level falls to under P < Pg. This takes place in two phases appearance of nuclei, and growth of bubbles of the free gas phase. Thermodynamic conditions for stable nucleation are formulated in [1], They are analogous to the conditions for starting the boiling of low-molecular liquids. The following changes take... 

Bubbles are formed instantaneously. This conclusion made in [33] is based on estimates taken from earlier works [37]. As seen from the above cited works by S. E. Sosin et al., this is not always true viscoelastic liquids under triaxial stretching stress are not destroyed instantly. The existence of an induction period may produce a considerable effect on foam growth kinetics upon free foaming, when pressure is lowered instantaneously from P > Pcr to P < Pcr in a melt with dissolved gas. However, it would appear that microfaults in polymer melts, which are caused by factors... 

On heating, these clusters evolve into strain-free bubbles and associated dislocation loops (Figure 9.8). The following mechanism of growth was... 

The factors affecting the stability and growth of bubbles in aqueous foams have been reviewed in depth by deVries (3). In order to disperse a given volume of gas in a imit volume of liquid, one must increase the free energy of the system by an amount of energy AF as follows ... 

In the calculation of the heat transfer in saturated boiling it is presumed that the heat transfer is predominantly determined by the bubble formation. In addition, convection also has some influence on the heat transfer, although this may only be small. Models and empirical equations start from the heat transfer in boiling in free flow. The influence of forced flow is taken into account with an extra term. This is based on the concept that the growth of the bubbles is only slightly influenced by the flow, as long as the bubbles are smaller than the superheated boundary layer. The heat transfer coefficient is a combination of two parts... 

Flotation methods allow recovery of fibers from water, which are raised to the surface on bubbles as a thick mat, which forms on the top of an aeration cell. This mat, which is virtually free of grit, is recycled to the pulp working stream. Slime growth in the aeration cell is discouraged by strong alternation of conditions such as pH, temperature, or chlorination level. Organomercury slime control agents were once used for this purpose. 

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