Mechanism and Kinetics of the Phase Formation and Dissolution of NaWO on a Pt Electrode in a NaWO-WO Melt.

A comprehensive study concerning the phase formation mechanism and growth/dissolution kinetics of sodium tungsten bronze crystals during the electrolysis of a 0.8NaWO-0.2WO melt was carried out.

Simulation of Diffusion-Controlled Growth of Interdependent Nuclei under Potentiostatic Conditions.

The problem of diffusion-controlled growth following an instantaneous nucleation event was studied within the framework of a new numerical model, considering the spatial distribution of hemispherical nuclei on the electrode surface and the mutual influence of growing nuclei via the collision of 3D diffusion fields. The simulation of the diffusion-controlled growth of hexagonal and random ensembles was performed at the overpotential-dependent number density of nuclei. The diffusion flow to each nucleus within a random ensemble was simulated by the finite difference method using the derived analytical expressions for the surface areas and the volumes formed at the intersection of 3D diffusion fields with the side faces of a virtual right prism with a Voronoi polygon base.

Simulation of 3D Electrochemical Phase Formation: Mixed Growth Control.

Processes of nucleation and growth largely determine the structure and properties of thin films obtained by electrodeposition on foreign substrates. Theoretical aspects of the initial stages of electrochemical phase formation under constant and variable overpotentials are considered in this work. Simulation of multiple nucleation with mixed (charge transfer, and diffusion) controlled growth was performed for three cases (cyclic voltammetry, potentiostatic electrodeposition, and galvanostatic electrodeposition).

Dynamic observation of X-ray Laue diffraction on single-crystal tungsten during pulsed heat load.

The dynamics of the diffraction peak shape during pulsed heat load on mosaic single-crystal tungsten were measured at the `Plasma' scattering station on the eighth beamline of the VEPP-4 synchrotron radiation source at the Budker Institute of Nuclear Physics. The observed evolution of the diffraction peak shape agrees with theoretical predictions based on calculations of deformation caused by pulsed heating. Three clearly distinguishable stages of the diffraction-peak evolution were found, correlating with the evolution of temperature and deformation distributions.

Sandwich double-decker Er(iii) and Yb(iii) complexes containing naphthalocyanine moiety: synthesis and investigation of the effect of a paramagnetic metal center.

Novel heteroleptic Er(iii) and Yb(iii) naphthalocyaninato-phthalocyaninates containing an octa-phenyl or octa-phenoxysubstituted naphthalocyanine deck were synthesised and identified by H NMR, EPR and high resolution MALDI-TOF/TOF mass spectrometry. Direct synthesis of novel homoleptic Yb(iii) bis (octa-phenylnaphthalocyaninate) was carried out. Downfield lanthanide induced shifts of the aromatic protons in target compounds were observed compared with the corresponding diamagnetic Lu(iii) complexes.

Heteroleptic naphthalo-phthalocyaninates of lutetium: synthesis and spectral and conductivity properties.

Novel heteroleptic naphthalo-phthalocyaninates of lutetium possessing a symmetrical substituted naphthalocyanine deck were synthesized on the basis of two preformed synthetic blocks: naphthalocyanine ligand and lutetium phthalocyaninates. The compounds obtained were characterized by (1)H NMR and high-resolution MALDI-TOF/TOF mass spectrometry. The correlation between the nature of the substituents and the spectral properties of the target complexes was determined by the introduction of electron-donating (aryl-, aryloxy-) or electron-withdrawing (chloro-) substituents into the phthalocyanine deck.

Comparison of clinical characteristics, co-morbidity and pharmacotherapy in adolescent schizophrenia patients with and without obsessive-compulsive disorder.

A substantial proportion of adolescent schizophrenia patients exhibit obsessive-compulsive symptoms/disorder (OCS/OCD). In the present study we sought to provide a clinical characterization of adolescent schizo-obsessive patients. A consecutive sample of 22 adolescent patients (age 13-18 years) who met DSM-IV criteria for both schizophrenia and OCD was compared with 22 non-OCD schizophrenia patients matched for age, gender and number of hospitalizations.

Preferential transmission of interleukin-1 receptor antagonist alleles in attention deficit hyperactivity disorder.

Attention deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder, where family data support substantial heritability.(1) To date, association studies focussed mainly on genes regulating dopaminergic neurotransmission.(2)Interleukin-1 (IL-1) activity in the brain has been implicated with differentiation of dopaminergic neurons(3,4) and modulation of central monoaminergic reactivity.

Akathisia-like behavior following ECT, and its successful treatment with low-dose mianserin.

The development of akathisia-like behavior during a course of electroconvulsive therapy (ECT) in a patient with psychotic depression is described. The ECT-induced akathisia responded successfully to mianserin. It seems that the beneficial effect of low-dose mianserin (15 mg/day) is related to its prominent antagonistic activity at the 5-HT2A/5-HT2C receptors.