Non-Debye screening of a surface charge and a bulk-ion-controlled anchoring transition in a nematic liquid crystal.

We study the anchoring mechanism due to substrate-adsorbed ions by examining a related anchoring transition. An analytical solution to the Poisson equation shows that, as their number suffices for a non-negligible anchoring contribution, the surface field is screened over some characteristic microscopic distance. It is shown both theoretically and experimentally that the critical temperature of the transition can be controlled by bulk ion density through its relation to the density of adsorbed ions.

[Experimental substantiation of cryodenervation method for anesthesia in patients with malignant tumors]. / Eksperimental'ne obhruntuvannia metodu kriodenervatsii z metoiu zneboliuvannia u khvorykh z zloiakisnym novoutvohenniam.

Results of investigations for more profound studying of different parameters of the cryogenic influence on neural fibers are adduced. According to the histological investigations the nerves cryodestruction at -50 degrees C temperature and lower caused the changes appearance with a gradual deepening of destructive changes under the influence of the more lower temperature.