[Age identity disorders (infantilism/ puerilism) in the psychopathological space of endogenous diseases].

Aim: A comparative psychopathological and psychometric analysis of age identity disorders (AID) - infantilism and puerilism - on the model of schizophrenia proceeding with hysterical symptoms.

Material And Methods: Results of the psychopathological study of 42 patients with schizophrenia and schizophrenia spectrum disorders (SSD), with well-marked signs of AID in the course of the disease (22 sub. - infantilism; 20 sub.

Electric-field-induced transition from helical to planar smectic structures without helix unwinding.

Previously electric-field-induced transitions from helical to planar structures in bulk liquid crystals were considered to take place with unwinding of helix. We show that the transition to the planar structure in polar smectic with frustrating interlayer interaction can occur without unwinding but through the formation of a periodic modulated structure with successive left-hand and right-hand sense of rotation in every half period. With field the amplitude of the left-right rotation decreases and a planar structure is formed.

Field-induced transitions between multilayer phases of polar smectic liquid crystals.

Recently Wang et al. [Phys. Rev.

Manifold of polar smectic liquid crystals with spatial modulation of the order parameter.

We revisit a theoretical approach based on the discrete Landau model of polar smectic liquid crystals. Treating equilibrium structures on many length scales, we have analyzed different periodically modulated polar smectic phases. Besides already known smectic structures, we have obtained a number of other phases which are stable in a narrow range (that is why the phases can be termed as microphases) of model parameters and thermodynamic conditions.

Commensurate polar smectic structures with a two-component order parameter.

Recently Wang [Phys. Rev. Lett.