In PWRs - a different LWR system - control rods are withdrawn from the core, and the control is acheived with soluble B-10 in the coolant (which is buffered with LiOH) to maintain a pH above 6.9 or perhaps closer to 7.1 - 7.4 for purposes of minimizing the accumulation of crud (metal corrosion products) on the fuel.
Rhetorical patterns have an additional function of helping writers to organize information in ways their readers can understand easily (425). Another term for these patterns is topoi (commonplaces). Many of these topoi are useful in numerous situations.
FOUR RHETORICAL PATTERNS. In college composition courses, in other content areas, as well as in some job situations, you will have to write expository prose. Simply, this kind of writing presents a reader in a logical manner some facts you are aware of; it is writing to inform.riting expository prose will require that you know some patterns of organization. The purpose of this chapter and the exercises that accompany it is to introduce you to four basic rhetorical patterns: classification, comparison and contrast, process analysis, and cause and effect.