Dispersion, degree

A common way to evaluate the anisotropy of porous structures requires that the three principal MILs(0, derived from the 3D distribution of the directional MILs(0, square root of the absolute value of the three main eigenvalues (A, B, and C) is defined as the magnitude of the principal MIL(0, supplies information about the dispersion degree of the solid phase around the principal MIL(0, [Pg.251]

Figure 4.12 Influence of kinematic parameter of flow A and viscosity on the dispersion degree of Ti02 agglomerates in silicone oil (trials with a single screw extruder) [151...

In such situation, when copper is deposited on these supports one may expect the presence of at least three kinds of copper entities differing in their interactions with the underlying support and which may be designated as copper-alumina, copper-2D-Ce and copper-3D-Ce. The chemical behaviour of the first and the last of these entities can be assumed in principle to be close to that of copper supported on the pure supports. For the calcined samples, in the case of the CuA catalyst two different Cu entities have been identified on the EPR spectra differing in their dispersion degree, with a fraction of Cu remaining undetected. On CuC, the observable species is clearly different from those... 

The surfactant concentration has a great effect on the decrease in the dispersity degree of the emulsions. An abrupt decrease in the droplet size becomes appreciable with addition of even small surfactant amounts—0.25% of ethoxylated alkylphenol. This dispersity increase unequivocally leads to an increase in sedimentation stability. 

The appreciable influence of the viscosity decrease on the droplet size decrease at small additives of a surfactant stabiliser is caused not only by the increased dispersion degree due to the decreasing interfacial tension, but prevents also coalescence of droplets. The increase of the surfactant concentration, after a certain limit, practically without influencing the coalescence, leads to an increase of dispersity due to a reduced interfacial tension. 

The critical shear rate, above which equation (11.31) leads to the first physically useful dispersion degree (>0.1%), is in the neighbourhood of what is known to cause melt fracture ( r > 1000 s , T > lO Nm). This leads to the hypothesis that dispersion can only occur and be observed under melt fracture conditions, a widely known rheological instability [122]. ... 

Catalysts were reduced previously in controlled hydrogen atmosphere at 923 K for 2 hours in a quartz cell joined to a system of continuous flow. The heating rate was 7K/min. The magnetization was carried out at 300K. The Ni° content and the dispersion degree were determined from experimental data. 

One of two platinum electrodes was immersed into an NaCl solution (10 mol/1) to a fixed depth. The immersion depth of the second electrode was a variable factor. Kinetics of the second electrode potential variation towards that of the silver chloride was registered and compared to the case when a PVB powder was placed on the solution surface (dispersion degree 160-200pm, powder layer density 4mg/cm ). 

The morphology of the incompatible blends depends on two factors dispersion degree of the two phases, and shape and dimensions of the dispersed particles. In turn, these factors are determined by the rheological characteristics of the two components and by the mixing conditions. 

Di Mattia, C. D. Sacchetti G. Mastrocola D. Sarker D. K. Pittia P. Surface properties of phenolic compounds and their influence on the dispersion degree and oxidative stability of olive oil OAV emulsions. FoodHydrocolloid., 2010,24, 652-658. 

The dispersion of carbon black agglomerates which are in suspension of liquid polymethylsiloxane and their dependence fi om the shear stress, has been studied by simple shear flow in cone-and-plate shearing device [13, 14]. The statements presented above show that the results of the research on the influence of mixing duration on the dispersing degree of the carbon black... 

Small size and high dispersion degree contribute to the enhanced solubility, dissolution rate and bioavailability ... 

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