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Introduction. The urgency of the paper is due to the increased interest of linguists in the harmony of interaction and polite interpersonal communication maintenance and restoration. By means of discursive parameters of the communicative situation of apology modelling the research aims to identify the linguistic and strategic peculiarities of their realization in the form of direct and indirect apologies, and to describe the discursive and pragmatic specificity of indirect apology scenario, which prevails in the English-language interaction.Methodology and sources. The research is carried out on the material of modern British writers' original texts (R. Joyce, J. Rowling, R. Golman) and scripts of feature films in English (Bridget Jones' Diary, directed by Sharon Maguire, Emma – Directed by Douglas McGrath, etc.) selected by means of a continuous selection method, 172 text excerpts verbalize direct or indirect apologies. The speech act of apology, being a unit of the analysis, is aimed at demonstrating awareness of interpersonal relations and polite communication conventions violation. Linguistic-and-pragmatic analysis of direct and indirect apologies application stipulated the use of parametric modelling method, which involves building a model of communicative situation with the identification of constants, or parameters that vary and adapt to the circumstances of their use. The study of the strategic and tactical peculiarities of communicative behavior in situations with explication of indirect apology was performed by using content analysis method. It was accompanied by application of interpretive analysis of motives, reasons and conditions. In the course of the study, content analysis was applied to state out the subject matter of apologizing and forgiveness statements within the framework of a categorical communicative situation and the subsequent description of their lexical, grammatical, and syntactic peculiarities.Results and discussion. In order to restore harmony broken by accidental or deliberate violation of norms and conventions the communicants use direct or indirect apologies in situations of interpersonal interaction. The parametric modelling method application has enabled the identification of scenario realization variability and proved its conformity with direct and indirect apology strategies. The scenario realization mostly depends on the assessment of severity of the damage caused. The pragmatic-and-linguistic peculiarities of direct and indirect apology scenarios development in English speech practice have been considered and described. The immediate apology intention, which is verbalized in t he speech act of forgiveness request, constitutes the basis for direct apology scenario and is intensified by algorithmized sequence of speech-behavioral actions, such as admitting the guilt, giving excuses, shifting blame, communicating feelings, calling for empathy. In situations of indirect apology, as compared with the direct apology scenario, the replacement of a request for forgiveness by means of one or several speech actions is observed, which confirms the hypothesis of their compensating function in English-speaking interpersonal communication. The paper presents the results of a quantitative and qualitative calculation, which has enabled the researchers to draw a conclusion about the strategic preferences of English-speaking communicants, their gender-stipulated choice, frequency and effectiveness of speech actions application whilst the identified variants of apology scenarios implementation.Conclusion. The discursive strategies of indirect apology, which are expressed by means of speech acts of fault intensification and minimizing, uttered in case of offence or damage of various degree caused to a person, are viewed as value -oriented means of interpersonal relations regulation in the English-speaking community. They reveal the specificity of communicative self-distancing and personal space preservation.

The manganese end member of triplite-triploidite series of compounds, Mn2(PO4)OH, is synthesized by a hydrothermal method. Its crystal structure is refined in the space group P21/c with a = 12.411(1) Å, b = 13.323(1) Å, c = 10.014(1) Å, β = 108.16(1), V = 1573.3 Å3, Z = 8, and R = 0.0375. Evidenced in measurements of magnetization M and specific heat Cp, Mn2(PO4)OH reaches a long range antiferromagnetic order at TN = 4.6 K. As opposed to both triplite Mn2(PO4)F and triploidite-type Co2(PO4)F, the title compound is magnetically frustrated being characterized by the ratio of Curie-Weiss temperature Θ to Néel temperature TN of about 20. The large value of frustration strength Θ/TN stems from the twisted saw tooth chain geometry of corner sharing triangles of Mn polyhedra, which may be isolated within tubular fragments of a triploidite crystal structure. © 2017 The Royal Society of Chemistry. ; We thank E. V. Guseva for the X-ray spectral analysis of the sample and N. V. Zubkova for her help in the X-ray experiment. This work was supported by the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST "MISiS" project K2-2016-066 and by RFBR projects 15-05-06742, 16-02-00021 and 17-02-00211. The work was supported by Act 211 Government of the Russian Federation, contracts 02.A03.21.0004, 02.A03.21.0006 and 02.A03.21.0011.

We have investigated the elastoresistance of two compounds that have a close chemical composition but differ significantly in electronic properties. The first compound has a negative temperature coefficient of resistance and does not show any phase transitions other than a superconducting one. The elastoresistance of this compound approximately follows the law which is a special case of the Curie-Weiss law, which is usually observed for Fe(Se,S) with metallic conductivity. The second compound has a metallic type of conductivity and, in addition to the superconducting transition, there is also a phase transition at a temperature of about 30 K. The elastoresistance of the second compound is sign-reversing and can be approximated with the sum of two Curie-Weiss-type terms with opposite signs and different critical temperatures. We attribute this behavior to the competition of contributions to the elastoresistance from different band valleys. These competing contributions may appear since the composition of our compound is close to the critical point at which the low-temperature ground state in the 11 series of iron-based superconductors changes from electronic nematic order to magnetic order. © Copyright2020 EPLA. ; This work was supported in part from the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST "MISiS" (K2-2020-008) and by Act 211 of the Government of Russian Federation, agreements 02.A03.21.0004 and 02.A03.21.0006 and by the Program of Competitive Growth of Kazan Federal University. We acknowledge support from Russian Foundation for Basic Research (Grants 20-02-00561 and ofi-m 17-29-10007) and Russian Science Foundation (Grant 19-42-02010).

Low-temperature scanning tunneling microscopy and spectroscopy has been used to image the vortex core and the vortex lattice in FeSe single crystals. The local tunneling spectra acquired at the center of elliptical vortex cores display a strong particle-hole asymmetry with spatial oscillation, characteristic of the quantum-limit vortex core. Furthermore, a quasihexagonal vortex lattice at low magnetic field undergoes noticeable rhombic distortions above a certain field ∼1.5 T. This field H∗ also reveals itself as a kink in the magnetic field dependence of the specific heat. The observation of a nearly hexagonal vortex lattice at low field is very surprising for materials with an orthorhombic crystal structure and it is in apparent contradiction with the elliptical shape of the vortex cores. These observations can be directly connected to the multiband nature of superconductivity in this material, provided we attribute them to the suppression of superconducting order parameter in one of the energy bands. Above the field H∗ the superconducting coherence length for this band can well exceed the intervortex distance which strengthens the nonlocal effects. Therefore, in addition to multiple-band effects, other possible sources that can contribute to the observed evolution of the vortex-lattice structure include nonlocal effects which cause the field-dependent interplay between the symmetry of the crystal and vortex lattice or the magnetoelastic interactions due to the strain field generated by vortices. © 2019 American Physical Society. ; Citrus Research and Development Foundation, CRDF ; Government Council on Grants, Russian Federation ; Russian Science Foundation, RSF: 17-12-01383, 18-72-10027 ; Ministero dellâ Istruzione, dellâ Università e della Ricerca, MIUR ; Foundation for the Advancement of Theoretical Physics and Mathematics: 17-11-109 ; Ministero dellâ Istruzione, dellâ Università e della Ricerca, MIUR ; Kazan Federal University ; Office of Science, SC ; Division of Materials Sciences and Engineering, DMSE ; Russian Foundation for Basic Research, RFBR: 17-52-12044 ; Ministry of Education and Science of the Russian Federation, Minobrnauka ; Temple University, TU ; Argonne National Laboratory, ANL ; Nanjing University of Science and Technology, NUST: K2-2017-084 ; Drexel University ; The authors would like to acknowledge fruitful discussions with V. Kogan and T. Hanaguri. We also would like to acknowledge technical support during the early stage of these measurements from S. A. Moore. The work at Temple University, where low temperature scanning tunneling measurements were performed, was supported by US Department of Energy, Office of Science, Basic Energy Science, Materials Sciences and Engineering Division under Award No. DE-SC0004556. The work at Drexel University and at the M.V. Lomonosov Moscow State University was supported by the US Civilian Research and Development Foundation (CRDF Global). The work in Russia has been supported in part by the Ministry of Education and Science of the Russian Federation in the framework of the Increase Competitiveness Program of NUST MISiS Grant K2-2017-084, by Act 211 of the Government of Russian Federation, Contracts No. 02.A03.21.0004, No. 02.A03.21.0006, and No. 02.A03.21.0011 and by the Russian Government Program of Competitive Growth of Kazan Federal University. One of the authors (C.D.G.) would like to acknowledge partial support from MIUR (Ministry of Education, Universities and Research of the Italian Government). The work in IPM RAS (Nizhny Novgorod) was supported in part by the Russian Science Foundation (the calculation of the vortex-lattice characteristics Grant No. 18-72-10027; the calculation of the vortex-core deformation and the analysis of the experimental data Grant No. 17-12-01383), the Russian Foundation for Basic Research (Grant No. 17-52-12044), and Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS" (Grant No. 17-11-109). The work at Argonne National Laboratory was supported by the US Department of Energy, Office of Science, Basic Energy Science, Materials Sciences and Engineering Division.