Theories of icicle growth had traditionally had nothing to say about such features, but Farzaneh and Ueno suggested surface tension between the freezing water and the surrounding air was the culprit: the higher the surface tension, the fewer ripples on the icicles (Physics of Fluids, vol 22, p 017102). (newscientist.com)
In the current study, the mice showed normal slow gamma activity despite having fewer ripples. (gladstone.org)
Mice with apoE4 had fewer ripples than mice with the normal apoE3 protein, and they had less slow gamma activity during the ripples. (gladstone.org)