1. This periodic change in pressure conditions is known as the Southern Oscillation, or SO. 2. Until now a periodic change could not be proven only on foundation of its painting. 3. To my knowledge, " none " of the examples above display periodic changes over time. 4. 2012 was a tumultuous year for face with many periodic changes in the band's performing line up. 5. Periodic changes in this data Artie Hatzes, based on six independent data sets with four different telescopes.6. The vertical motion forces periodic changes in speed and trough; this is called a "'rotor " '. 7. This is a single handle ball-type faucet that has no regular faucet washers that need periodic changing . 8. The Sun has also undergone periodic changes in luminosity that can have a significant impact on the Earth. 9. With the exception of Ali Mohsen, all of these commands are subject to periodic change or shuffle ." 10. Periodic changes in brightness have long been observed in stars which indicate cooler or brighter starspots on the surface.
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