Twenty-Meter Laser Strainmeter "Popova Isl.".

This paper describes the design and principle of operation of a 20 m laser strainmeter of unequal-arm type created on the basis of a Michelson interferometer and frequency-stabilized helium-neon laser. The interferometry methods used allow the measurement of the displacement of an Earth's crust section on the base of the laser strainmeter with an accuracy of 30 pm in the frequency range from 0 (conventionally) to 1000 Hz. This laser strainmeter, when connected to an accurate time system providing an accuracy of 1 μs, should structurally become a part of the laser interferometric seismoacoustic observatory, consisting of spatially separated laser strainmeters installed in various regions of Russia.

Hard- and Software Controlled Complex for Gas-Strain Monitoring of Transition Zones.

The article describes a hard- and software controlled complex for gas-strain monitoring, consisting of stationary laser strainmeters and a laser nanobarograph, a stationary gas analyzer, and a weather station installed at Shultz Cape in the Sea of Japan; and a mobile shipboard complex, consisting of a gas analyzer and a weather station installed in a scientific research vessel. In the course of trial methodological measurements on these systems, general patterns were identified in the dynamics of greenhouse gases and deformation of the Earth's crust in the range of diurnal and semi-diurnal tides, and also in the range of ultra-low frequencies, caused by atmospheric wave processes and, possibly, individual tones of the Earth's eigen oscillations.

[Current approaches to medical-psychological rehabilitation of military personnel of the Russian Federation Armed Forces. (Literature review)].

Improving the medical and psychological rehabilitation system is a priority area for restoring the military personnel's working capacity and combat capabilities after fulfilling special tasks. Changes in the psychoemotional state due to significant psychic and emotional tension can cause mental impairments, which has negative impact not only on military personnel themselves, but also on their combat working capacity. The article presents an overview of forms and methods of medical and medical-psychological rehabilitation used in sanatorium-resort organizations of the Ministry of Defence of the Russian Federation.

[Realization of medical and medical psychological rehabilitation in sanatorium-resort organizations of Ministry of Defence of the Russian Federation].

Current conditions of military service demand higher standards of servicemen health status, whose professional activity in extreme combat conditions is accompanied by the impact of many adverse environmental factors on the body. One of the priority tasks of medical service of Armed Forces of the Russian Federation in 2023 yr. is to improve the system of curative and preventive measures in medical and medical psychological rehabilitation to recover health and increase working capacity of servicemen.

Verification of Data from Supersensitive Detector of Hydrosphere Pressure Variations.

The paper describes experimental research and the results of these studies carried out in various bays of the Primorsky Territory of Russia using a supersensitive detector of hydrosphere pressure variations and a sound velocity profiler with pressure and temperature sensors. In all experiments, instruments, rigidly fixed to each other, were placed on the bottom at a depth of up to 10 m. Comparison of in-situ data from these instruments allowed us to experimentally calculate the coefficient of data conversion of the supersensitive detector of hydrosphere pressure variations when registering sea waves with periods ranging from several seconds to tens of minutes.