Hexagon column

Fig. 45. Formation of Ice II (a) Hexagon plane of ice Ih with diagonal bond connections (b) up-down displacement of surviving hexagon columns (c) O j hex ring (strongly puckered) connected to 8 O j rings (almost flat) (d) unit cell of ice II (from Ref. 74>)...

Hydroxyapatite and titania are also useful stationary phase materials for biological samples. Hydroxyapatite, Cai0(PO4)6(OH)2, as a hexagonal column... 

Fig. 19 (a) Core-shell columns, (b) hexagonal-columns-in-lamellae morphology and (c) segregated trilayers gray = aromatic cores, white = aliphatic spacers and dark = RF-chains [146]... 

For some three chain benzoic acids 46 with long aliphatic spacers and Rp-chains (m 8. 11 / 10) an unusual phase structure, assigned as hexagonal-columns-... 

Figure 5. Scattering phase matrix elements for 3D randomly oriented hexagonal columns, plates, dendrites, and for hexagonal columns randomly oriented in the horizontal plane.

Figure 6. ROM results for the scattering phase matrix (excluding diffraction) of a 3D randomly oriented Koch fractals and hexagonal columns at a wavelength of 0.5 /rm. The results for the very same fractal have been calculated with the ray-tracing codes by Macke and by Muinonen.

Formula weight 5293.6. Relatively large, lustrous, hexagonal columns, partly intergrown. Readily soluble in HgO. The aqueous solution is unstable on boiling, depositing a white precipitate. 

Figure 31 Probable morphological structures for ABC materials exhibiting equal volume fractions, (a) Each chain consists of a hexagonal column.

Fig. 3 Trioctyloxybenzoylamino-2-tropone derivative 19 as gelator with intramolecular hydrogen bond and the scenario of organization leading to gelation, which starts with the head-to-tail dimer followed by formation of a stacked column, hexagonal column in gel fiber, fiber bundles, and finally a gel network...

On the other hand, the USA adopts a block type fuel element in HTGRs. In this fuel element, coated particle fuel and graphite powder are mixed and sintered, then shaped into thin rods, and loaded and sealed into holes in a hexagonal column-shaped graphite block. The experimental... 

In the following, three figures containing a lot of representative hexagons (columns) for different pairs of analytes and eluents are shown and brief comments are made with regard to the similarity of the columns. 

Note, however, that phason fines cannot be embedded into an otherwise perfect Se-Al-Pd-Mn. The area above the phason fine in Fig. 6 contains two hexagon columns, which are turned into their alternate position with respect to the... 

Fig. 12(a) is a high-resolution HAADF image of a phason plane in eg-Al-Pd-Mn and Fig. 12(b) shows the corresponding tiling representation. Since each individual phason line connects two-neighboring hexagon columns with their alternately oriented version (Section 3.1), the phason plane is a (001) mirror. Accordingly, phason planes can be considered as twin boundaries or inversion boundaries in the Eg-structure. 

The offset ds introduced by a phason plane can be interpreted as the vertical component of the phason-plane strain field. Since the phason plane turns hexagon columns into their alternate orientation, its strain field has in addition a lateral component corresponding to a translation of half a lattice constant along the [10 0] direction. The total phason-plane strain field can then be described by the displacement vector 7 =1/2(1 0 - 1/r ), which was experimentally verified by means of fringe-contrast analysis in TEM [37]. 

Fig. 25. Hexagon-column arrangement in the Eg-tiling with the presence of (a) a metadislocation core, (b) a single phason plane, and (c) a combined arrangement of the latter (see text).

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