The HVEDC Method for the Production of Tungsten Based Alloys

The purpose of this study is to investigate HVEDC method for the production of tungsten-based alloys. It is established that the method of high-voltage electro-discharge compaction, in addition to some economic and time benefits, contributes to a minimal change in the microstructure and does not lead to grain growth, therebyimproving mechanical characteristics. Keywords: powder metallurgy, tungsten heavy alloys, high-voltage electro-discharge consolidation

Reinvestigation of tris­odium dihydroxido­tetra­oxidoneptunate(VII) dihydrate

The title compound, Na3[NpO4(OH)2]·2H2O, contains distorted tetra­gonal–bipyramidal centrosymmetric [NpO4(OH)2]3− complex anions. The Np—O distances are 1.8975 (7) and 1.8891 (7) Å in the NpO4 group and 2.3451 (7) Å to the OH group. Both Na atoms (one in a general position, the second in a special position on an inversion centre) have a distorted octahedral oxygen environment

A functional description of the model for the protection of the environmental interests of the Russian Federation in the Baltic Sea region

This article identifies the objective conditions of the conflict between the interests of development and those of environmental security. The latter are given added urgency when, within the same ecological unit, one country needs to develop and another to protect its environmental interests. The borders of the countries and regions, the economies of which affect the safety of Russia’s interests in the Baltic, do not coincide with the boundaries of the ecosystems. This calls for a study of the legal protection of Russia’s environmental interests in the Baltic Sea region. There is no legal mechanism for ensuring a balance between the interests of development and those of environmental security of the countries that have shorelines along the Baltic Sea. Thus, it is necessary to give a functional description of the regional model for the legal protection of the environmental interests of the Russian Federation in the Baltic region. To this end, we identify the juridical content of the environmental interests of the Russian Federation. We consider the possibilities of the legal protection of the environmental interests in the national and international jurisdiction. The interests are divided into two groups respectively. We reveal the essence of the environmental interests of the Russian Federation in the Baltic Sea region. We analyse the case of the Russian regions located within the Baltic Sea catchment area to test an approach to identifying the region’s boundaries. This approach may be used in modelling the regional level of the legal protection of Russia’s environmental interests in the Baltic region. We identify the environmental interests of the Russian Federation in the Baltic Sea region, as well as the forms of legal protection of the country’s interests in this territory. We describe the elements of the system of the legal protection of Russia’s interests in the Baltic region and examine the functions of these elements. The result of this study is a functional description of the model of legal protection of the environmental interests of the Russian Federation in the Baltic region. This model may be used to strengthen the links between the elements of the protection of the legitimate interests of the Russian Federation in the Baltic region

The influence of liquid on the deformation behavior of human dentin

The influence of liquid on the mechanical properties of human dentin under uniaxial compression is studied in this work. It has been shown that the storage of samples for 24 h in water, acetone, and glycerin does not lead to a change in the microstructure or to qualitative changes in the mechanical behavior of dentin, which continues to be highly elastic; capable of considerable plastic deformation; and a strong, hard tissue. © 2013 Pleiades Publishing, Ltd