Structural, Magnetic, and Magneto-Optical Properties of Thin Films of BaM Hexaferrite Grown by Laser Molecular Beam Epitaxy.

Thin films of BaM hexaferrite (BaFeO) were grown on α-AlO(0001) substrates by laser molecular beam epitaxy. Structural, magnetic, and magneto-optical properties were studied using medium-energy ion scattering, energy dispersive X-ray spectroscopy, atomic force microscopy, X-ray diffraction, magneto-optical spectroscopy, and magnetometric techniques, and the dynamics of magnetization by ferromagnetic resonance method. It was shown that even a short time annealing drastically changes the structural and magnetic properties of films.

[Viruso-bacterial pneumonia, complicated by lightness pulmonary bleeding with death].

Despite the significant achievements and successes of medical science, the incidence of influenza, its complications and socio-economic damage do not decrease, remaining at a high level. In the clinic of Mechnikov North-Western State Medical University from December 2018 to February 2019, from 89 hospitalized patients with pneumonia/acute bronchitis viral etiology was determined in 29 (32%). In 27 (97%) patients it was virus A (H1N1), in 2 cases A (H3N2).

Buckling Resistance of Two-Segment Stepped Steel Columns.

Columns of stepwise variable bending stiffness are encountered in the engineering practice quite often. Two different load cases can be distinguished: firstly, the axial force acting only at the end of the column; secondly, besides the force acting at the end, the additional force acting at the place where the section changes suddenly. Expressions for critical forces for these two cases of loading are required to correctly design such columns.

Numerical Simulations of Destructive Tests of Cast Iron Columns Strengthened with a CFRP Coating.

In many cases, there is a need to reinforce the existing, sometimes very old, cast iron columns. The paper describes a proposed and completed reinforcement procedure using an external, thin coating (sleeve or jacket) made of composite (carbon fiber reinforced polymer-CFRP). The strengthening effect was verified in destructive tests performed on two original columns (without reinforcement) and two other, identical columns strengthened by means of the proposed technique.

[Algorithm of Macrophage Activation Assessment for Forecasting and Evaluation of Treatment Effectiveness of Human Diseases].

Despite the high complexity of macrophage activation and subsequent polarization, determination of the key dynamic features of these processes provides the basis for both assessment of macrophage activation current state and for disease prognosis. To sum it up either macrophage phenotype ratio or polarizing stimulus ratio may be the most important indicators.

[THE FORMATION OF HEALTHY LIFE-STYLE OF SOVIET YOUTH IN 1920S-1930s YEARS].

The article considers analysis of social pedagogical aspects of problem of formation of healthy life-style in youth in the Soviet Russia in 1920-1930s years in the course of public policy and as well as in theory and practice of national pedagogics.

[Opportunities for pharmacological management of macrophage polarization].

Macrophages play a key role in the pathogenesis of many human diseases. Both evaluation of M2/M1 macrophage ratio and discovering definite roles of macrophage phenotypes in this diseases may be used as criteria for assessment of effectiveness of treatment and for predicting prognosis of patients. Moreover, macrophage reprogramming seems to be a perspective therapeutic strategy for the diseases with inflammatory component in their pathogenesis.

[Roles of different macrophage phenotypes in the pathogenesis of some human diseases].

Macrophages have recently been shown to play a key role in promoting of recovery after some diseases as well as in aggravation of inflammatory responses, all the functions being resulted from microenvironmental conditions and therefore phenotypes acquired by macrophages in these conditions. In this article some protective functions of macrophages during infectious and oncologic diseases as well as pathogenic roles in a number of inflammatory diseases are reviewed. Much attention is devoted to opportunities of macrophage reprogramming.

Cation stoichiometry and electrical transport properties of the NdGaO3/(0 0 1)SrTiO3 interface.

The interface formed between two wide band-gap insulators, NdGaO3 and SrTiO3 renders metallic behavior, similar to the LaAlO3/SrTiO3 interface. The interface conductivity depends strongly upon oxygen pressure during growth of the NdGaO3 film and subsequent annealing in oxygen. The conductivity of a (10 uc) NdGaO3/SrTiO3 film, pulsed laser deposited at low (pO2 = 10(-4) mbar) oxygen pressure, vanishes after annealing at 600 °C in oxygen atmosphere.

[The rehabilitation treatment of patients with motor and cognitive disorders after stroke].

Unlabelled: Objective. To study the possibility of using the rehabilitative pneumatic suit "Atlant" in stroke outpatients. Material and methods.

Induced ferromagnetism in helium bombarded graphite.

Irradiation with helium ions is an effective method for triggering ferromagnetism in graphite. Chemical inertness of helium suggests that local magnetic moment formation is determined solely by the intrinsic carbon defects created during the target damage. Interacting moments are located in two places: in the vicinity of the sample surface and near the point of maximum defect generation.

Optimized transport properties of LaAlO₃/SrTiO₃ heterointerfaces by variation of pulsed laser fluence.

We show the influence of pulsed laser deposition fluence on the transport properties of the LaAlO(3)/SrTiO(3) (LAO/STO) heterointerface. Structural characterization by x-ray diffraction and medium energy ion spectrometry enables us to deduce that the electronic behaviour is extremely sensitive to the stoichiometry of the LAO layer as well as the structural quality of the STO surface. An optimum balance of these two quantities is demonstrated for an intermediate laser fluence.

Cationic disorder and phase segregation in LaAlO3/SrTiO3 heterointerfaces evidenced by medium-energy ion spectroscopy.

Medium-energy ion spectroscopy (MEIS) has been used to study the depth profile and deduce the distribution of possible cationic substitutions in LaAlO3/SrTiO3 (LAO/STO) heterointerfaces. Analysis of La and Sr peaks in aligned and random MEIS spectra indicates that the surface layers of LAO on an STO substrate are not homogeneous and stoichiometric if the film thickness is less than 4 unit cell layers. This is possibly caused by a redistribution of La and Sr at the interface.

[Molding of adolescents' character as a basis for successful sociopsychological adaptation].

To bring up pupils and to mold their character are one of most important tasks of an educational process since these are a direct academic work component associated with all knowledge grasping processes. Scientific-and-technological progress as up-to-date mass media becomes one of the most powerful factors of the pedagogical medium, which updates the necessity of timely using its achievements in modern education. There is a trend toward decreased moral and ethical components in the present-day schoolchildren's personality structure over a ten-year period.

[Relationship between age-related development of the neuropsychic sphere in primary schoolchildren and academic activity].

The aim of this work was to study age-related dynamics of the development of higher psychic functions and manifestations of CNS fatigue in 1-4-form schoolchildren in relation to the duration of schooling. Psychophysiological studies in several Moscow schools included evaluation of cognitive and psychomotor functions and nervous fatigue (in the critical flicker fusion frequency test). It is shown that psychophysiological development of junior schoolchildren is a sequel to two major factors, age and schooling duration, that have differential effect on the neuropsychic sphere.

Emitting a-SiO(x)(Er) films and a-SiO(x)(Er)/a-Si:H microcavities doped with Er by remote magnetron sputtering technique.

We have developed the technique of growing amorphous a-SiO(x)(Er) films and a-SiO(x)(Er)/a-Si:H multilayer structures based on spatially separating the processes of the decomposition of an oxygen-silane gas mixture in an rf glow discharge plasma and remote magnetron sputtering of an Er target. This approach allows us to control independently the film deposition rate, the Er-ion concentration and its depth distribution in the film. Time-resolved photoluminescence measurements have shown that films and planar microcavities with an Er-doped active layer exhibit internal quantum efficiency for Er ion emission of ∼75%.

Liquid level sensor using ultrasonic Lamb waves.

This paper describes a novel, noninvasive method for measurement of liquid level in closed metal tanks that are under high pressure. It is based on the use of ultrasonic Lamb waves propagating along the tank wall. Contact with liquid substantially changes the characteristics of these waves and this can be used as an indicator of liquid presence.

[Automated information system for controlling the sociopsychological adaptation of junior grade schoolchildren during learning activities].

An automatic information system (AIS) was developed to assess the mental status and sociopsychological adaptation of junior schoolchildren. AIS contains functional units for automatic testing, assessment, individual and group analysis of the schoolchildren's status.

[The growth dynamics of nucleoli and their silver stainability in the cell cycle of ESK cells in a monolayer culture].

The cell cycle progression of individual pig embryo kidney (PK) cells was followed by time-lapse microphotography. Evidence has been presented that every detachment of cells from the substrate for subculturing leads to nearly a twofold decrease in the average number of nucleoli per nucleus. However, this number is progressively increased with every generation of flattened cells on the substrate.

[Development of an automatic information system for the evaluation and control of psychologic health status in schoolchildren].

Automatic information system for assessment and control of the health state of schoolchildren has been developed at Research Institute of Hygiene and Disease Prevention.

[The kinetics of the transition to DNA synthesis in the cell cycle of sister cells of the ESK line in culture].

The proliferation kinetics of a cultured pig embryo kidney cell line, PK, was studied by time lapse cinemicrography and 3H-TdR autoradiography. The duration and variability of all phases of the cell cycle was estimated. Evidence is presented that the variation in the cell cycle transit time of both unrelated and sibling cells results mainly from the variation in transit of G1-phase.

[Equivalent dose of cosmic rays at representative points in models of the human body].

Equivalent doses of cosmic ray protons were studied in a wide range of spectra realized in solar cosmic rays and Earth radiation belts, for three standardized models of the human body. To solve this task, a problem was created for calculating the function of shielding of representative points within an anthropomorphic model. Equivalent dose values in various models were compared.

Ultrastructural changes in nucleoli and fibrillar centers under the effect of local ultraviolet microbeam irradiation of interphase culture cells.

As shown previously, ultraviolet (uv) microbeam irradiation of one of the two mature nucleoli within an interphase cell nucleus causes significant diminution and inactivation of the irradiated nucleolus and compensatory growth and activation of the nonirradiated one. In the present work we describe the results of an ultrastructural study of this phenomenon. The changes in the nucleoli were examined by means of complete series of ultrathin sections obtained from seven irradiated pig kidney cells.

[Silver staining of the nucleoli of pig embryonic kidney cells during the hyperactivation and inhibition of the synthesis of nucleolar RNA by UV microirradiation].

Silver staining of the nucleoli in pig embryo kidney cells (PK) was studied during the cell cycle and also upon mature nucleoli modifications induced by UV microirradiation. During anaphase only four silver-stained granules were revealed in each daughter set of chromosomes in the four nucleolus-organizing regions (NORs). In the following 1-2 hours, the number of granules in the NORs rapidly increased up to 25-30 per nucleus.