Fusing edge

FIGURE 13.2 Stratum comeum incubation with liposome suspension (S). The liposomes appear to adsorb (A) on to the surface of the stratum corneum. The liposomes are fusing edge to edge, and patches of liposomal clusters (P) are formed on the top of the outermost corneocytes (C). No changes in ultrastructure could be found deeper in the stratum corneum. Pt, the direction of platinum shadow scale bar (0.1 xm). (Reproduced from Hofland, H.E. et al., Br. J. Dermatol., 132, 853, 1995. With permission from Blackwell Publishing.)... 

Sutural placentation is seen in the Leguminosce (Pea, Bean, etc.). Here each carpel has prolonged along its fused edges two cord-like placental twigs, from which start the funiculi or ovule stalks. 

Defiirution 5.5. A fusing edge of a coronoid Cq is an edge between two vertices of degree three on the outer perimeter of Cq. 

If a coronoid has a furing edge it must necessarily be a core coronoid. Notice also that all fusing edges disappear from a coronoid as soon as it is circumscribed (if possible). Finally it is noted that c(Cq) very well may be a non-core coronoid even if Cq is a core coronoid. An example is shown below. 

It is clear that Cq is a core coronoid if the conditions of Observation 5.3 are fulfilled. But also, if a coronoid C has no fusing edge and e(C) is a coronoid, it is inferred that C is restored by circumscribing c(C) one only has to recall the mechanism of excising and circumscribing. 

This is immediately obvious because the excising will strip Q for the outside feature(s), which consist(s) of one or more catacondensed appendages. It is also possible to verify eqn. (48) in a formal way by computing m, the number of fusing edges, and exploit the more general equation for 5 inherent in (45). Let Q and Qt be the same coronoid except for the possible outside feature(s) in Q. Then 5 is the same in Q and Qt. Let the number of hexagons in Q and Qt be h and ht, respectively. Then... 

A fascinating variety of discrete (or occasionally polymeric) polynuclear halogeno complexes of As, Sb and Bi have recently been characterized. A detailed discussion would be inappropriate here, but structural motifs include face-shared and edge-shared distorted (MXe) octahedral units fused into cubane-like and other related clusters or cluster fragments. Examples (see also preceding paragraph) are ... 

As previously described, the Gould-Jacobs reaction has been applied to heterocycles fused to anilines, and to some amino-substituted heterocycles. Selectivity of N- and C-cyclization of 2-aminopyridino-methylene malonates has been mentioned (51 and 56). The normal mode of cyclization of 2-aminopyridino-methylene malonates is on the nitrogen to form a pyridopyrimidine. If an electron-donating group (EDG) is in the 6-... 

As described by W. G. Housekeeper (1923), platinum wire of 0-05 mm diameter can be successfully sealed through Pyrex if the wire is first flattened and the edges filed to a sharp V-shape as shown in Figure 42, I. The flattened portion of the wire is fused into a tube whose end has first been collapsed down until it will just take the broad part of the wire. Alternatively the wire may be beaded first,... 

All compounds reported within the review period are indolizines or their hetero-substituted derivatives, fused through the a- or -edge to a five-membered heterocyclic ring. 

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