In PWRs - a different LWR system - control rods are withdrawn from the core, and the control is acheived with soluble B-10 in the coolant (which is buffered with LiOH) to maintain a pH above 6.9 or perhaps closer to 7.1 -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.
movement or procedure with uniform or patterned recurrence of a beat, accent, or the like. 2. Music. the pattern of regular or irregular pulses caused in music by the occurrence of strong and weak melodic and harmonic beats. a particular form of this: duple rhythm; triple rhythm.