In PWRs - a different LWR system - control rods are withdrawn from the core, and the control is acheived with soluble B-10 in the coolant (which is buffered with LiOH) to maintain a pH above 6.9 or perhaps closer to 7.1 -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.
Noun. 1. rhetorical device-a use of language that creates a literary effect (but often without regard for literal significance). rhetoric-study of the technique and rules for using language effectively (especially in public speaking). device-something in an artistic work designed to achieve a particular effect.itotes, meiosis-understatement for rhetorical effect (especially when expressing an affirmative by negating its contrary); saying `I was not a little upset' when you mean `I was very upset' is an example of litotes.