11.   This indicates that the polyethylene chain is twice as extended as the freely jointed chain model when short range interactions are considered.

12.   Thus polyisobutylene might be expected to crystallize because the chain is symmetrical, but it will only do so if maintained at an optimum temperature for several months.

13.   Just above its melting temperature a polymer behaves like a highly viscous liquid in which the chains are all tangled up with their neighbours.

14.   Hence the polyethylene chain is much more flexible in the melt and gains considerably more entropy on melting, so that T m is correspondingly lower.

15.   When the polymer chains are unsymmetrical, with repeat units of the type, an additional restriction to rotation is imposed by steric effects.

16.   Because only the V chain is required for recognition, virtually all T cells expressing the appropriate V chains are activated by superantigens, regardless of their V.

17.   When exogenous superantigens are injected into adult animals, T cells expressing the appropriate Vs initially proliferate and then, paradoxically, become anergic and die.

18.   As Philip Williams and Martin Harrison noted, the superimposition of republican monarchy on the structure of cabinet government meant that the chain of decision-making was often uncertain.

19.   From now on the chain of events is very similar to that of monetary theories of the cycle.

20.   If the chain is unbroken and poor parenting and depression results, the same sequence of events may well be replicated in the next generation.