Ring alignment

Attach the melting point capillary tube to the thermometer by means of a rubber ring. Align the mercury bulb of the thermometer so that the tip of the melting point capillary containing the solid is next to it (Fig. 15.3). 

Theoretical calculations have predicted that the electronic properties of SWNTs depend on the tube diameter d and on the helicity of the hexagonal carbon ring alignment on the nanotube surface, defined by a chiral angle 0, which in mm depends on the n and m integers, which denote the number of unit vectors noj and ma2 in the hexagonal lattice of the graphite ... 

The support plate backs up the B plate in the mold, and melt is delivered from the nozzle to the sprue bushing. The locating ring aligns the mold with the nozzle, whereas the leader pins and bushing align the two sides of the mold. In the ejection system, the sprue puller and ejector pins, are attached to the ejector plate, which is, in turn, connected to the machine s ejection plates by the ejector rod. When the mold is opened, the sprue puller draws the part to the B side of the mold, whereas the... 

Figure 11.32. Molecular model of polystyrene and benzene rings alignment. [Adapted by permission, from J M Guenet, Macromol. Symp., 114, 97(1997).]...

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