X-ray diffraction and Raman data on the pressure induced phase transitions of a nanometric zirconia, ZrO<Subscript>2</Subscript>, are analyzed via a classical phenomenological Landau approach of the bulk. It is concluded that the initial tetragonal structure (D <Subscript>4h </Subscript> <Superscript>15</Superscript>), which is a metastable bulk state of zirconia at...</superscript></subscript></subscript>

The development of the system of social protections in the Russian Federation up to the summer of 1998âthat is, before the start of the latest financial and economic crisisâwas oriented chiefly toward easing the negative socio-economic consequences of economic recession, high inflation, and...