Thermomechanical Stability of Carbyne-Based Nanodevices.

An approach is developed to predict stability of carbyne-based nanodevices. Within this approach, the thermo-fluctuation model of instability and break of contact bond in nanodevices, containing carbyne chains and graphene sheets, is offered. Unlike the conventional models, it does not include empirical constants.

Relation between the strength and dimensionality of defect-free carbon crystals.

On the basis of ab initio simulations, the value of strength of interatomic bonds in one-, two- and three-dimensional carbon crystals is obtained. It is shown that decreasing in dimensionality of crystal gives rise to nearly linear increase in strength of atomic bonds. It is ascertained that growth of strength of the crystal with a decrease in its dimensionality is due to both a reduction in coordination number of atom and increase in the angle between the directions of atomic bonds.

Mechanical properties of carbyne: experiment and simulations.

The results of the high-field technique for obtaining and testing the carbyne strength in situ are presented. By using molecular dynamics simulation and ab initio calculations, a comprehensive analysis of the results is executed. High-field technique for experimental measurement of the carbyne strength in situ is briefly described.

[Forensic medicine as the cradle of toxicology in Russia].

Modern toxicology as a science and educational subject originated from forensic medicine in the middle of the XIXth century. In the beginning, selected toxicological problems were taught in the Emperor's Medical Surgical Academy (presently S.M.

[The use of immunological characteristics of the peripheral blood for the purpose of forensic medical expertise of the subjects exposed to ionizing radiation].

The objective of the present study was the comprehensive evaluation of quantitative and functional metabolic characteristics of human leukocytes following in vitro irradiation of peripheral blood samples at a dose of 0.25, 0.50, 1.

[The state of immunity in the liquidators of consequences of the Chernobyl accident with cardio-vascular diseases].

The purpose of the work was research and functional reserves immunity in participants in the Chernobyl with cardiovascular disease. A Clinical Lab 49 men aged 44 to 52 years with diseases of the cardiovascular system, participated in the Chernobyl nuclear power plant in 1986 to 1988. As control used data 33 patients with similar pathology, and 16 healthy men.

[Diagnosis and surgical treatment of gallbladder cancer].

Retrospective analysis of 72 patients with diseases of gall bladder cancer was conducted. The difficulty of differential diagnosis of tumors of the biliary tract, the rapid progression of tumors and a high postoperative mortality (19.6%) were noted.