Primary channels, definition

Defining individual responsibilities and authority alone will not define how personnel relate to one another. Interrelation means to place in mutual relationship, so what is needed is a definition of the relationships between all staff with quality responsibilities. The primary reason for defining interrelationships is to establish channels of communication so that work proceeds smoothly without unplanned interruption. Staff need to know from whom they will receive their instructions, to whom they are accountable, to whom they should go to seek information to resolve difficulties, and to whom information or product should be submitted when complete. 

Other nomenclature is associated with these channels. Narrow points in a channel are called windows or, less definitively, rings. These further limit the movements of ions and molecules. Wider areas between windows and/or at channel intersections are called cavities or cages, and these may be the primary source of the intrazeolitic volume which is available for ions and molecules. This volume can be as large as half of the total volume of a zeolite crystal. Cavities accessible from only one side may be called side-pockets. A zeolite whose channels are of relatively uniform diameter may be viewed as having neither windows nor cages. 

The primary photochemistry of methylamine, as established from classical bulk experiments, has been reviewed by Michael and Noyes [262], who until recently provided the most definitive work on this subject. These studies suggest that Eq. 15 is the dominant (ca. 75%) dissociation pathway following excitation within the first continuum, but also identified products arising from C—H bond fission (Eq. 16), C—N bond cleavage (Eq. 17), and the molecular elimination channel (Eq. 18) ... 

Mechanistic Uncertainties and Errors. Mass-balance mechanism yield consistency tests are definitive only to the extent that complementary changes in the product yield distributions have been monitored. To illustrate the nature of this limitation, we recall that stable and activated nascent products are formed from F-for-F Reaction 18 via respective Reactions 24 and 25. Because the yield from Reaction 25 is not subject to decomposition, no (P/Z) interdependence is possible between these contributions to Y(CH3CHF F). Chemical intuition thus provides the only basis for assigning the species from Reactions 24 and 25 to the same primary reaction channel (25,34,45). 

---