Anthropogenic Neighborhood Impact on Bacterial and Fungal Communities in Polar Bear Feces.

Climate changes cause a dramatical increase in the ice-free season in the Arctic, forcing polar bears ashore, closer to human settlements associated with new and non-natural food objects. Such a diet may crucially transform the intestinal microbiome and metabolism of polar bears. The aim of this study was to characterize changes in the gut bacterial and fungal communities resulting from the transition to anthropogenic food objects by the means of 16S and ITS metabarcoding.

[Reference intervals of thyroidstimulating hormone in pregnant women living in the central regions of the Russian Federation].

Background: Pregnancy is a condition with important structural and physiological changes in the thyroid gland. In this regard, experts of thyroid associations have recommended developing specific reference intervals taking into account the natural and socio-geographical characteristics of the region under study.

Aim: To conduct an epidemiological analysis and evaluate TSH reference intervals in pregnant women living in the central regions of the Russian Federation with mild iodine deficiency.

Isotopic Composition of Blood of Polar Bears (Ursus maritimus) of the Kara-Barents Sea Population.

The data on the content of carbon and nitrogen isotopes in the blood samples of polar bears obtained in the present study confirm that polar bears in the Taimyr region (and the Kara-Barents sea population in general) are partly dependent on the resources of terrestrial origin. However the "terrestrial carbon" evidently reaches bears' tissues indirectly, via marine food webs utilizing organic carbon brought into the polar basin by Siberian rivers.

Movement of a female polar bear (Ursus maritimus) in the Kara Sea during the summer sea-ice break-up.

The polar bear movement trajectory in relation to onset date of the sea-ice break-up was studied in the coastal zone of the Taimyr Peninsula, eastern part of the Kara Sea, using as an example a female polar bear tagged by a radio collar with an Argos satellite transmitter. Analysis of the long-term pattern of ice melting and tracking, by means of satellite telemetry, of the female polar bear who followed the ice-edge outgoing in the north-eastern direction (in summer 2012) suggests that direction of the polar bear movement depends precisely on the direction of the sea-ice cover break-up.

[The possibility of using high resolution satellite images for detection of marine mammals].

The possibility of using modern systems of remote sensing in the optical range from high spatial resolution satellites for detection of marine mammals and traces of their activity is investigated. An image obtained by the GeoEye satellite within the FEAC project was used for the analysis. The image covers Herald Island and adjacent waters, which are a part of the Wrangel Island Reserve, during the seasonal thaw (June 2009).

Highly efficient, narrow-linewidth, and single-frequency actively and passively Q-switched fiber-bulk hybrid Er:YAG lasers operating at 1645 nm.

High power, highly efficient single frequency oscillation of Er:YAG fiber-bulk hybrid laser at 1645 nm is demonstrated in actively and passively Q-switched operation modes. The slope efficiencies in the active and passive Q-switched operation reached 75% and 20%, respectively, with the record output powers in the narrow-linewidth and single longitudinal mode regimes of operation.

[The measurement of scattering radiation in the radiation control of x-ray offices].

A procedure for measuring the power of an ambient and goal-oriented equivalent scattered radiation dose in the radiation control of X-ray rooms. The procedure is based on the concept of the effective solid angle of a dosimeter directivity diagram. The plots of the angular response of a S2010 selective X-ray dosimeter for studying the radionuclides 119Sn, 241Am, 57Co are exemplified.

[Use of acupuncture for restoring motor and transit functions of the stomach and intestines in suppurative peritonitis].

With the aim of restoration of motor-evacuatory function of the stomach and intestine, the acupuncture was used in 220 patients with purulent peritonitis. The positive effect after single procedure was noted in all the patients with local peritonitis. In 100 patients with diffuse peritonitis, 2-3 procedures were required to achieve clinical effect.

[Electrical activity of the motor units of the muscles in blood supply disorders of the latter].

Electrical activity of the motor units in the muscles (m. gastrocnemius and m. extensor hallucis brevis) in normal humans and in the patients with impaired peripheral circulation in the lower limbs was studied with the needle concentric electrodes.