The influence of reflexive educational environment on students’ reflection development in the process of social adaptation

The topicality of the research is caused by the necessity to overcome contradictions between the traditional environment of educational institutions and the socialization of future graduates related to their mental world creation, to finding their identity in terms of civilization change and the rapid development of digital technologies. The aim of the study lies in defining the additional functions of the reflexive educational environment and its influence in the formation of students’ reflexive abilities and their understanding of the relationship between reflection and adaptation process in society. The leading method to investigate this problem (issue) is the reflexive method, including introspection, self-analysis, existential techniques of ‘self-exploration’, a dialogical communicative technique that allowed identifying, through content analysis of reflexive and analytical essays of students, the types of adaptive orientations (and the reflexive repertoires based on them) from which, as they integrate, a reflexive personality style is developed. It is established that the reflexive repertoires used in the process of self-identification correspond to the four adaptive attitudes of the person: homeostatic, hedonistic, rationalistic and pragmatic. Social adaptation is manifested in a conscious change in behavior and one’s own life support system, in creating a new environment of social existence, and is accompanied by a transformation of consciousness and self-awareness. In this case, reflection is the main means of these changes and the integration of reflexive repertoires and of formed reflection levels (narrative, dialogical, cognitive and axiological) are the factors influencing the outcome of social adaptation. The results of the research are aimed at solving the problem of creating a reflexive educational environment for students’ personal development and at choosing effective ways and mechanisms for their adaptation and self-realization in society. The materials of the study can prove useful both for theoretical research of reflexive thinking development in a specially created educational environment and for the teaching activities, including a foreign language.Keywords: reflexive educational environment, reflexive orientation, reflexive repertoires, social adaptation

Stereochemical transformations of some seven-membered pyridoxine dimethyl ketals

According to the data of single crystal X-ray diffraction analysis and computational methods, the seven-membered rings of acylated pyridoxine acetonides have C 2 symmetry. Two stereochemical transformations in solutions, enantiotopomerization of P-, M-conformations with spiral chirality of twist-boat forms and diastereotopomerization of structures that differ in the configuration of the phenolic oxygen substituents, were revealed by dynamic 1H NMR spectroscopy. © 2007 Pleiades Publishing, Ltd

Stereochemistry of 1,3-dithia-5,6-benzocycloheptene-s-oxides

According to dynamic 13C NMR spectroscopy trans-2-R-(R=Ph, Me, Et, Pri)-5,6-benzocycloheptene-1-oxides at -60°C in CDCl 3 exist as an equilibrium mixture of the chair and boat forms with the substituents in the equatorial position. Unsubstituted (R=H) compound has in addition a boat form with an axial sulfinyl group, whereas for Bu t derivative conformational equilibrium is anancomerically shifted to the boat structure. X-ray study of trans-2-isopropyl-1,3-dithia-5,6- benzocycloheptene-1,3-dioxide displays a chair form with equatorial alkyl substituent and axial-equatorial SO-moieties. © 2003 Elsevier B.V. All rights reserved

Atmospheric waves disturbances from the solar terminator according to the VLF radio stations data

The perturbations from the solar terminator in the range of acoustic-gravity waves (AGWs) periods from 5 min to 1 h were analysed with the use of measurements of VLF radio signals amplitudes on the European radio path GQD–A118 (Great Britain–France). These observations provide information on the propagation of waves at altitudes near the mesopause ( 90 km), where VLF radio waves are reflected. On the considered radio path a systematic increase in fluctuations in the amplitudes of radio waves was observed within a few hours after the passage of the evening terminator. For April, June, October 2020 and February 2021 events, the distribution of the number of wave perturbations with large amplitudes over AGWs time periods has been studied. Our results show that the evening terminator for different seasons is dominated by waves in the range of periods of 15–20 min. The amplitudes of the AGWs from the terminator at the heights of the mesosphere (fluctuations in the concentration of neutral particles, velocity components and vertical displacement of the volume element) are approximately determined by the fluctuations of the amplitudes of the VLF radio signals. The amplitudes of the AGWs on the terminator are 12–14% in relative concentration fluctuations, which correspond to the vertical displacement of the atmospheric gas volume of 1.1–1.3 km. Based on the analysis of the AGW energy balance equation, it was concluded that the waves predominantly propagate in a quasi-horizontal direction at the terminator. The possibility of studying the long-term changes in the mesosphere parameters using fluctuations in the amplitudes of VLF radio waves at the terminator is shown

Universal energy distribution for interfaces in a random field environment

We study the energy distribution function $\rho (E)$ for interfaces in a random field environment at zero temperature by summing the leading terms in the perturbation expansion of $\rho (E)$ in powers of the disorder strength, and by taking into account the non perturbational effects of the disorder using the functional renormalization group. We have found that the average and the variance of the energy for one-dimensional interface of length $L$ behave as, $_{R}\propto L\ln L$, $\Delta E_{R}\propto L$, while the distribution function of the energy tends for large $L$ to the Gumbel distribution of the extreme value statistics.Comment: 4 pages, 2 figures, revtex4; the distribution function of the total and the disorder energy is include

Synthesis and stereochemistry of 4-tert-butyl-4-oxo-3,5,8-trioxa (3,5-dioxa-8-thia)-4-phosphabicyclo [5.1.0]octanes and related acetals

X-ray, 1H NMR and IR spectroscopy methods have been applied to a series of heterobicyclo[5.1.0]octanes. Endo epoxide and exo thiirane based on 2-tert-butyl-2-oxo-1,3,2-dioxaphosphepine exhibit chair form in a crystal state. Strong predominance of the chair conformation takes place in solution also as for similar bicyclic acetals produced from 2-tert-butyl-1,3-dioxacyclohept-5-ene. 3,5-Dioxa-8-thiabicyclo[5.1.0] octane bearing no a bulky substituent was found to exist as a mixture of stereoisomers in solution. © 2006 Elsevier B.V. All rights reserved

Surface decoration of silica nanoparticles by Pd(0) deposition for catalytic application in aqueous solutions

© 2015 Elsevier B.V.. The work introduces chemical and electrochemical synthetic routes to obtain Pd(0) nanoparticles (PdNPs) deposited onto silica supports in aqueous media. The former route is performed through reduction of Na2[PdCl4] by ascorbic acid in the presence of amino-modified silica nanoparticles (SiO2-NH2). The time-dependent variation of pH and the reductant concentration is the simple synthetic route to get uniform deposition of 215nm sized silica supports by Pd(0) nanoparticles (3-10nm). The methylviologen-mediated electrochemical synthetic route results in small PdNPs (3-9nm) located both onto and beyond the silica supports. Thus, the chemical synthetic route provides more homogeneous Pd(0)-SiO2-NH2 aqueous colloids. The results reveal that attractive interactions of amino/ammonium groups of SiO2-NH2 with both [PdCl4]2- and ascorbate-stabilized Pd(0) seeds are the key reasons for the better Pd(0)-deposition onto silica supports. The chemically deposited Pd(0)-SiO2-NH2 nanoparticles catalyze the chemiluminescence of luminol resulted from the H2O2-facilitated oxidation in alkaline aqueous solutions

Orbital glass and spin glass states of 3He-A in aerogel

Glass states of superfluid A-like phase of 3He in aerogel induced by random orientations of aerogel strands are investigated theoretically and experimentally. In anisotropic aerogel with stretching deformation two glass phases are observed. Both phases represent the anisotropic glass of the orbital ferromagnetic vector l -- the orbital glass (OG). The phases differ by the spin structure: the spin nematic vector d can be either in the ordered spin nematic (SN) state or in the disordered spin-glass (SG) state. The first phase (OG-SN) is formed under conventional cooling from normal 3He. The second phase (OG-SG) is metastable, being obtained by cooling through the superfluid transition temperature, when large enough resonant continuous radio-frequency excitation are applied. NMR signature of different phases allows us to measure the parameter of the global anisotropy of the orbital glass induced by deformation.Comment: 7 pages, 6 figures, Submitted to Pis'ma v ZhETF (JETP Letters

Association of Polymorphisms of Serotonin Transporter (5HTTLPR) and 5-HT2C Receptor Genes with Criminal Behavior in Russian Criminal Offenders

Background: Human aggression is a heterogeneous behavior with biological, psychological, and social backgrounds. As the biological mechanisms that regulate aggression are components of both reward-seeking and adversity-fleeing behavior, these phenomena are difficult to disentangle into separate neurochemical processes. Nevertheless, evidence exists linking some forms of ag

Cellular imaging by green luminescence of Tb(III)-doped aminomodified silica nanoparticles

© 2017 Elsevier B.V.The work introduces Tb(III)-centered luminescence of amino-modified silica nanoparticles doped with Tb(III) complexes for cellular imaging. For these purposes water-in-oil procedure was optimized for synthesis of 20 and 35 nm luminescent nanoparticles with amino-groups embedded on the surface. The obtained results indicate an impact of the nanoparticle size in decoration, aggregation behavior and luminescent properties of the nanoparticles in protein-based buffer solutions. Formation of a protein-based corona on the nanoparticles surface was revealed through the effect of the nanoparticles on helical superstructure of BSA. This effect is evident from CD spectral data, while no any size impact on the adsorption of BSA onto aminomodified silica surface was observed. Cellular uptake of the nanoparticles studied by confocal and TEM microscopy methods indicates greater cellular uptake for the smaller nanoparticles. Cytotoxicity of the nanoparticles was found to agree well with their cellular uptake behavior, which in turn was found to be greater for the smaller nanoparticles