In PWRs - a different LWR system - control rods are withdrawn from the core, and the control is acheived with soluble B-10 in the coolant (which is buffered with LiOH) to maintain a pH above 6.9 or perhaps closer to 7.1 -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.
In general, rhetoric is the art of persuading another person to do something or to have a particular opinion. There are a number of tactics, or rhetorical strategies, that can be used to aid in persuasion. The most famous of these are Aristotle's three types of appeals â logos, ethos and pathos. Mastering techniques for using these strategies can help writers and speakers frame their rhetoric in ways that will be most persuasive to their audiences.