Alternating zone

Proof The (5,3)-polycycles 4 and D + E2 + D are non-2-embeddable. So, some of their alternating zones do not define convex cuts ... 

Consider now a (5, 3)-polycycle, different from A, which does not contain 4 and D + E2 + D as partial subgraph. From the above we know that its possible elementary components are D, E2, 3, C3. Take an alternating zone Z passing through... 

It remains to investigate the (3,5)-polycycles with elementary summands C4, d, e, e-i, e-j. We assume that c3 and d + ez+d o not appear as sub-polycycles and we will prove that their alternating zones define convex cuts. 

However, both Cmcm and Imma models would be expected to give rise to very similar image contrasts for thin crystals in view of the similarity of their projections along the [001] axis. Therefore, in the absence of additional experimental images projected along alternative zone axes, exact differentiation between the two structures is not possible at this resolution. Hence, the proposal that the disorder present in this system may arise from stacking faults involving a translation of c/2 cannot be confirmed. 

Macroscopically, the bottom yellow layer is a 8 cm thick rubbly zone of alternating silt and clay layers with occasional stringers of fine silt. On a microscopic scale, this layer is characterized by alternating zones of clay clasts that are covered by thin clay... 

The possibility that zonally distributed differenees in size and connections of the Purkinje cells are correlated with specific chemical properties of these cells was first raised by Marani (Marani and Voogd, 1977 Marani, 1981, 1982a Marani, 1986) on the basis of the distribution of 5 -nucleotidase and acetyleholinesterase in the molecular layer and by Chan-Palay (1984) who reported a restricted distribution of certain peptides in subsets of Purkinje cells. More recently a complete pattern of alternating zones of immunoreactive and non-immunoreactive Purkinje cells was described by Hawkes and Leclerc (1986, 1987) with a Purkinje cell-specific antibody (anti Zebrin-I) in the rat and by Brochu et al. (1990) with anti-Zebrin II in the rat and other species (see Section... 

In conclusion, whereas in the in-phase 02,03 phonon frequency vs x curve steps can be resolved corresponding to compositions of a chain-superstructure series, no such effect can be seen in the apex phonon. If a staircase of phases existed, as indicated by the in-phase phonon steps, it would divide the superconducting range of 123-0 in alternating zones of phase-separated material. 

Slugging defines a condition where the bubble size becomes nearly equal to the tube diameter, or (as in the case of group C particles) portions of the bed are bodily lifted, resulting in alternate zones of packed and void regions. We are usually concerned with the former, and the velocity for the onset of this condition is given by... 

Note that the effect of alternating zones of simple and complex behavior was discovered for the first time by van der Pol [154] in his experiments on the periodic forcing of a lamp generator (this effect occurs when one tunes a radio, and a characteristic noise is heard while moving from one station to another). The first theoretical explanation was given by Cartwright and Littlewood [36] for the van der Pol equation. 

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