Grain length

Thus, the exchange of work between the lamella and its surroundings is effected on a coarse-grained length scale defined in units of Eliminating and. s, in Eq. (11) in favor of n gives... 

It can be concluded that if axial combustion instability is observed it can be eliminated by simple ballistic design changes such as propint burning rate characteristics, motor operating pressure decrease, or a reduction in grain length... 

Case 39,—Starch of the Cactus mamiUccna discolor exhibiting several double grains length 8 thousandths of a millimetre. 

In one dimension, an exemplary choice for a convolution function is (x — aq) = exp[(x — Xi)2/B2, where B is the characteristic coarse-grained length. With this choice, the coarse-grained one-dimensional concentration is... 

Examples with different characteristic coarse-grain lengths are shown in Fig. 1.8. 

Table 13.1 Typical amylose content (%) by grain length of commercial US rice varieties9...

The needle-like grain shape seems to be kinetically determined and therefore not the equilibrium crystal shape [30,38], The estimated equilibrium aspect ratio (ratio of grain length to thickness) is 1.3, not as high as 20, as was found to be the case for the silicon nitride materials. The microstructural formation must therefore be explained on the basis of growth mechanisms. 

The microstructure was investigated with SEM. The grain length of the cross section which is paraUel with the electric field direction was 10 15 nm, and it was proven to be smaUer than the 15 30 nm grain length of the cross section which is perpendicular to the direction and the specimen crystallized by the conventional method. It was possible to control shape and orientation of crystal grain by the crystallization in the electrical field. 

Figure 3. Coarse-grained free energy as a function of conq)osition (0=(c-Ccrit)/Ccrit) for various coarse-graining lengths L [4].

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