[The organization of chemical toxicological service and medical examination of persons for condition of alcohol drunkenness, fact of consumption of drug and other psychoactive substances in the Khanty-Mansi Autonomous Okrug-Yugra].

The article presents the analysis of organization of chemical-toxicological service and in the Khanty-Mansi Autonomous Okrug-Yugra. The introduction of three-level system for provision of addiction medical care of population and implementation of the principle of zoning made it possible to organize three-level system of chemical-toxicological service that permitted to achieve equal access to chemical-toxicological and addiction care services in all territories of the region. The investments in chemical-toxicological laboratories, supply of modern equipment, advanced training of laboratory specialists, cooperation with leading research centers and professional communities outside of the region allowed timely and accurately identify psychoactive substances, prompt response in cases of mass poisoning with novel psychoactive substances, and quick introduction of advanced methods of chemical-toxicological examination to the medical organizations of the large industrial northern region of Russia.

[The analysis of drug abuse situation in the Khanty-Mansi Autonomous Okrug - Yugra].

The article presents the analysis of drug abuse situation in municipalities and districts of the Khanty-Mansi Autonomous Okrug - Yugra (KHMAO-Yugra) in 2017-2018, as well as the dynamics of changes of the drug abuse situation in KHMAO-Yugra as a whole in 2015-2018. By 2018, the drug abuse situation in the KHMAO-Yugra improved as compared with previous years of the study period and corresponded to the "tense" level, which indicates the need to continue systematic and targeted intersectoral work aimed at reducing morbidity and mortality associated with the use of drugs and psychoactive substances in this northern region of Russia.

Speciation of actinides in groundwater samples collected near deep nuclear waste repositories.

Actinide binding to colloidal particles of different nature was studied under oxic and anoxic conditions of an underground nuclear waste disposal site using successive micro- and ultrafiltration techniques. According to the actinide redox speciation, under oxic conditions they were present in high oxidation states except for plutonium, for which a significant part was found in the tetravalent state. In case of the anoxic conditions, the share of An (IV) was proportional to the total U(IV) concentration. This indicated formation of intrinsic U(IV) hydroxocolloids, which bound other actinides. Formation of the intrinsic actinide colloids was proven by the secondary ion mass spectrometry (SIMS) with the submicron resolution. In contrast, under the oxic conditions uranium and plutonium were sorbed by natural colloids (amorphous hydrous ferric oxide and Mn oxides).

Raman studies of nearly half-metallic ferromagnetic CoS2.

We measured the Raman spectra of ferromagnetic, nearly half-metallic, CoS2 over a broad temperature range. All five Raman active modes Ag, Eg, Tg(1), Tg(2) and Tg(3) were observed. The magnetic ordering is indicated by a change of the temperature dependences of the frequency and the line width of Ag and Tg(2) modes at the Curie point. The temperature dependence of the frequencies and line widths of the Ag, Eg, Tg(1), Tg(2) modes in the paramagnetic phase can be described in the framework of the Klemens approach. Hardening of the Tg(2), Tg(1) and Ag modes on cooling can be unambiguously seen in the ferromagnetic phase. The line widths of Tg(2) and Ag modes behave in a natural way at low exciting laser powers (they decrease with decreasing temperature) in the ferromagnetic phase. At high exciting laser powers the corresponding line widths increase as temperature decreases below the Curie temperature. Then, as will be shown, the line width of the Ag mode reaches a maximum at about 80 K. Tentative explanations of some of the observed effects are given, taking into account the nearly half-metallic nature of CoS2.

[Radioecological situation in the impact zone of the accidental underground nuclear explosion "Kraton-3" in the Republic of Sakha (Yakutia)].

The paper reports on the results of a ground walking gamma- and gamma-spectrometric survey made in the impact zone of the accidental underground nuclear explosion "Kraton-3". Patterns of migration, 137Cs, 90Sr and Pu distribution in the soil-vegetable cover of the northern taiga on permafrost are considered. Radioeco- logical situation within the territory surveyed is noted as unfavorable.

[Use of a sinusoidal current of optimal frequency to stimulate the healing of skin wounds]. / Ispol'zovanie sinusoidal'nogo toka optimal'noi chastoty dlia stimuliatsii zazhivleniia kozhnykh ran.

Local subthreshold electrostimulation of skin wounds with sinusoidal currents at a frequency of 300 Hz which is optimal for rats (the threshold of muscle contraction is minimal) improves microcirculation, reduces inflammatory processes, stimulates proliferation and differentiation of fibroblasts and epithelium, maturation of the granulation tissue, thereby accelerating the healing of linear and large incised wounds. The increase or reduction in the optimal frequency and exposure time (for over 15 min) decrease the beneficial effect of electrostimulation.