Anisotropic relaxations introduced by Cd impurities in rutile TiO(2): first-principles calculations and experimental Support.

We present an ab initio study of the relaxations introduced in TiO (2) when a Cd impurity substitutes a Ti atom and an experimental test of this calculation by a perturbed-angular-correlation (PAC) measurement of the orientation of the electric-field gradient (EFG) tensor at the Cd site. The ab initio calculation predicts strong anisotropic relaxations of the nearest oxygen neighbors of the impurity and a change of the orientation of the largest EFG tensor component, V(33 ), from the [001] to the [110] direction upon substitution of a Ti atom by a Cd impurity. The last prediction is confirmed by the PAC experiment that shows that V(33 ) at the Cd site is parallel to either the [110] or the [1 1;0] crystal axis.

[Interdiction and guardianship--a comparative analysis from the neurologist's viewpoint]. / Entmündigung und Pflegschaft--Eine vergleichende Analyse aus nervenärztlicher Sicht.

After expositioning of legal basis for proposal and initiation of interdiction and guardianship a report is given concerning an analysis of all cases of infirmity guardianships of Dresden - City and of procedures of interdiction within the districts of Dresden - City, Dresden - Country, and Bischofswerda during 1975-1980. Some characteristic differences between these two particularities are worked out. The task of psychiatrist as expert is specified, and in conclusion the indispensibility of close cooperation between state notary and psychiatrist is emphasized.