We look for collective excitations originating from the strong surface pairing in unstable nuclei near the neutron drip-line. The soft dipole excitation is such a pairing mode as it exhibits a character of core-vs-dineutron motion. Possibility of the hydrodynamic phonon mode (the Anderson-Bogoliubov mode) is also discussed.
Mice were supinely restrained on a board by pinning the limbs. The board was then made to stand vertically and immersed in water to the height of the hind limbs of the animals. At 4 ao 28 hr after this restraint plus water-immersion stress, a remarkable decrease in the number of secretory granules in the chromaffin cells was light microscopically… (More)