ring

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Ring

A place on an exchange assigned for the trading of certain commodities, futures, or options. It is also called a pit or a trading pit.

ring

See pit.
References in periodicals archive ?
PMMA also lacks the carbon-rich benzene rings found in polystyrene.
2] and the benzene ring that attached to oxazine, respectively, do not change after heat treatment of 135[degrees]C.
1] of the trisubstituted benzene ring in benzoxazine monomers were remained in this spectrum.
For enlisted personnel, an embroidered, cloth version bearing the crossed retorts and benzene ring was produced for sleeve display.
In our study, there were mainly two phenomenons about water absorption: (1) the water absorption of BHPF-based polybenzoxazines was slightly higher than that of analogue based on bisphenol A polybenzoxazines; (2) the water absorption increase with increasing of the content of benzene ring for the same phenol-based polybenzoxazines.
The rigidity of its molecular chain has been enhanced by introducing the benzene ring structure, so the terpolymer has higher thermal stability than AMPS/AM copolymer.
To test their reasoning they constructed components, or monomers, for the frameworks by attaching silicon-based chemical groupss to either end of a single benzene ring or to a rigid string of several rings.
These reactions involve chemically displacing one of six hydrogen atoms, each attached to one of the six interbonded carbon atoms forming the hexagonal benzene ring.
These profound signals may be transmitted to benzene ring that is generally sensitive to ultraviolet light by means of p-[pi] conjugation between benzene ring and hydroxyl group.
1], which is the benzene ring mode with oxazine ring (25), (26), and 1230 [cm.
Another approach for in situ compatibilization of PS/polyolefin blends is to use the benzene ring of PS as the reaction site.