Distributive mixing ordered

The two singlet distribution functions are not in themselves sufficient to characterise the order in a smectic A phase because there is, in general, a correlation between the position of a molecule in a smectic layer and its orientation. We need, therefore, the mixed singlet distribution function P(z,cos ) which gives the probability of finding a particle at position z and at an orientation P with respect to the director [18,19]. At the level of description provided by the order parameters it is necessary to introduce the mixed order parameter... 

Remill batch and final batch rotors should be designed in order to favor distributive mixing and, hence, optimized cooling effect. 

The relative sizes of segregated and max mixed reactors are to be found on the basis of Gamma or Erlang distributions. Reaction orders are to be 2 and 0.5. For first order the ratio of sizes is unity. 

Fig. 7.29 Schematic representation of (a) the Ross ISG mixing element, and (b) its ordered distributive mixing action.

The opposite occurs at the forward-pumping section (A-A ). However, axial velocities, although still beneficial for distributive mixing, are an order of magnitude of the... 

The high tendency to homopolymerization of the 4-acetoxybenzoic acid relative to transesterification is responsible for the nonuniform distribution. In order to obtain copolymers with HBA units randomly distributed along the chains, the monomer 4-acetoxybenzoic acid may be added in portions rather than in a singla batch. Unitika (Suenaga and Okada, 1989) advanced the production process so that the HBA and PET moieties are uniformly distributed in the copolymers. With the advanced process the resins ( Rodrun LC-5000 ) showed almost 100% solubility in a hot (150 °C-160 °C) 50/50 mixed solvent of tetrachloroethane and phenol, while that produced by the old (Jackson and Kuhfuss, 1973) method has an insoluble residue of about 30 wt-%. The 13C-NMR spectra also showed that... 

In Fig. 7.121 reorientation occurs after 100 units of shear strain. Without reorientation the striation thickness reduces to about 10 = after 1000 units of shear strain. With one reorientation the striation thickness reduces to about 10 with two reorientations to about 10, etc. Cleariy, reorientation can achieve improvements in distributive mixing by orders of magnitude, it is a powerful tool in mixing operations. 

Kamutsch, C., Pflumm, C., Heliotis, G., Bradley, D., Wang, J., Weimann, T., Haug, V., Gartner, C., Lemmer, U. Improved organic semiconductor lasers based on a mixed-order distributed feedback resonator design. Appl. Phys. Lett. 90, 131104 (2007)... 

FIGURE 6.2 Distributive mixing (a) random and (b) ordered rearrangements. (Reprinted by permission of the publisher from Tadmor and Gogos, 1979.)... 

In order to improve the homogeneity of the compound, a device is sometimes attached to the screw head. Among these the Rapra cavity transfer mixer (CTM) is very effective in improving distributive mixing with least resistance to the flow of compound. Figure 12.7 [4]. The improvement of dispersion is not intended. 

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