Studying the Plastic Deformation of Cu-Ti-C-B Composites in a Favorable Stress State.

Composites with a copper matrix attract the attention of researchers due to their ability to combine high ductility, heat conductivity, and electrical conductivity of the matrix with the high hardness and strength of the reinforcing phases. In this paper, we present the results of studying the effect of thermal deformation processing of a Сu-Ti-C-B composite produced by self-propagating high-temperature synthesis (SHS) on its ability to deform plastically without failure. The composite consists of a copper matrix and reinforced particles of titanium carbide TiC (sized up to 1.

Bio-zeolite use for metal removal from copper-containing synthetic effluents.

Unlabelled: The adsorption capacity of biologically modified zeolite with respect to copper-containing effluents (Cu(II)-Fe(III), Cu(II)-Fe(III)-Ni(II), Cu(II)-Fe(II)-Zn(II), and Cu(II)-Fe(II)-Ni(II)-Zn(II)) has been investigated in order to apply it for industrial effluents treatment. Obtained bio-zeolite was characterized using neutron activation analysis, confocal laser scanning microscopy, and scanning electron microscopy. The efficiency of metal ions removal was determined as a function of pH, copper concentration, time, and temperature.

48 -cm-long room-temperature cavities in vertical and horizontal orientations for Sr optical clock.

The development of an optical clock with ultimate accuracy and stability requires lasers with very narrow linewidths. We present two ultrastable laser systems based on 48-cm-long Fabry-Perot cavities made of ultralow expansion glass in horizontal and vertical configurations operating at 698 nm. Fractional frequency instability of the beat signal between the two lasers reaches 1.

[The experience of development of partnership between science and health care institutions in resolving issues of circulatory system diseases].

In Russia, the process of clustering institutions at the regional level is evolved. The analysis of scientific publications revealed only several examples of efficiently functioning medical clusters. As a rule, the publications present problems or projects and perspectives of development of medical clusters.

[Urgent cardiovascular conditions in dental practice].

Cardiovascular diseases rank first in disease patterns and their prevalence increases in most countrie, including Russian Federation. The paper presents guidelines for approaches prevention of urgent cardiovascular conditions and measures to provide first medical aid which will help avoid the negative effects in the acute clinical situations.