Quantum-chemical Calculations of the Adsorption of CO on the Metal Oxide Clusters

The geometric, energetic, spectral and electronic properties of the most stable clusters of the aluminum, nickel and copper oxides with the adsorbed CO molecule have been studied using Density Functional Theory. The obtained results showed the better adsorption properties of nickel oxide clusters. According to the obtained results, the adsorption activity of the examined clusters decreases in the following order: NiO > Al[2]O[3] > CuO. The stronger interaction between active centers of the nickel oxide clusters and CO molecule is attributed to the higher charge transfer from the adsorbate to the surface in comparison with other clusters. The optimal position for CO interaction with the metal oxide surfaces and the appropriate optimal M-CO and C-O bond distances are presented

Environmental Research for the Sea of Japan and Adjacent Areas : FEB RAS Experience and Prospective

Far Eastern Branch of the Russian Academy of ScienceFar Eastern State UniversityScedule:17-18 March 2003, Vemue: Kanazawa, Japan, Kanazawa Citymonde Hotel, Project Leader : Hayakawa, Kazuichi, Symposium Secretariat: XO kamata, Naoto, Edited by:Kamata, Naoto

Geodynamic factors in the formation of large gold-bearing provinces with Carlin-type deposits on continental margins in the North Pacific

Several similar indicators in Nevada (USA) and South Yakutia (Russia) gold-bearing provinces have been identified based on modern tectonic, geophysical and seismic tomography observations, followed by the analysis of the main geodynamic factors of the formation and distribution of large gold-bearing provinces in the North Pacific. One of the significant metallogenic peculiarities is a wide variety of formational and mineral deposits concentrated in the areas. Both provinces are situated at active margins surrounded by fold-thrust belts. In South Yakutia, a combination of sublatitudinal Baikal-Elkon-Ulkan and submeridional Seligdar-Verkhnetimpon gravity field gradient zones is recorded. In contrast, significant positive gravity anomalies of the Northern Nevada Rift and higher-order gradient zones are presented in Nevada. Large pluton and transform fault zones in both provinces support a conclusion about the fundamental role of geodynamic factors in developing ore-magmatic systems in the regions. Significant differences in the scale of the gold mineralization in the considered provinces are explained by the existence under the North American continent not only of the Mendocino transform fault zone but also of the Juan de Fuca paleo-spreading center. In contrast, the Inagli-Konder-Feklistov magmatic-metallogenic belt alone controls mineralization under the Asian continent

Electronic Structure and X-Ray Photoelectron Spectra of Some Perovskite Molecular Crystals

It is new study of some molecular crystals with a perovskite structure, whose luminescent, thermochromic, nonlinear optical and dielectric properties provide opportunities for their wide practical application. This paper presents the results of an investigation of the electronic structure and the orbital nature of crystals with the AMX6 formula (where A = Cs, HGu; M = Te, Sb, Ir, Os, Re, W; X = F, Cl, Br). The electronic structure of crystals with Te and Sb atoms was determined by the method of X-ray photoelectron spectroscopy and quantum-chemical modeling within the framework of the density functional theory. We identified the molecular orbitals which are responsible for covalent metal-halogen binding. Also we found that the transition from the 3a1g highest occupied molecular orbital to the 4t1u lowest unoccupied molecular orbital, which corresponds to the states 1T1u and 3T1u, is responsible for the luminescence of the [MX6] 2– anions

Area synchronizers

Викладені нові технічні рішення, реалізація яких забезпечує підвищення точності відробітку команди на включення вимикача генератора при синхронізації і зменшення часу, що витрачається на виконання цієї операції.Изложены новые технические решения, реализация которых обеспечивает повышение точности отработки команды на включение выключателя генератора при синхронизации и уменьшения времени, которое тратится на выполнение этой операции.New technical decisions, realization of which provides the increase of exactness of working off a command on including of switch of generator during synchronization and diminishing of time which is outlaid on implementation of this operation, are expounded