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The aim of the work is to numerically simulate the degradation of elastic properties of carbon-fiber-reinforced polymers based on the previously developed model of damage in solids with mesoscopic defects. The paper presents a mathematical statement of cyclic loading of a representative volume of composite material with regard to damage accumulation. An analytical solution of the problem has been obtained, which made it possible to describe both the degradation of elastic properties and the Wohler curve (fatigue curve). An identification procedure of unknown model constants has been performed. Comparison of modeling results with experimental data of other authors showed good agreement.

Introduction. The article discusses the main approaches to the concept “right radicalism” in modern Russian and foreign political science. In addition, the author shows how actors in political processes use ideology in the framework of political struggle as exemplified by the ideological discourse of the far-right British National Party. The aim of the study is to trace the specifics of constructing the nationalist discourse of the rightwing political forces in modern Europe (using the example of the British National Party) and formulate the author’s definition of the term “right-wing radicalism”. Methods. The author uses comparative and historical-retrospective methods to comprehensively consider the phenomenon of the right-wing radicalism, as well as discourse analysis of a political party’s text, which contributes to a better understanding of the features constructing the discourse of these actors in political processes. Scientific novelty of the study. The work provides comprehensive analysis of the concept “right radicalism” in the context of political processes of modern Europe, the author suggests his own definition of the phenomenon considered. Results. From the vast scientific heritage devoted to issues of the right-wing radicalism, ideology, and functioning of right-wing political parties, the author choses several approaches presented in both domestic and foreign political science, which makes it possible to disclose essential ideas of the “right-wing radicalism”. In addition, as a result of the discourse analysis of the British National Party program document, the author identifies the main points that are key to the nationalist discourse of the modern European right-wing radical party. Conclusions. As a result of the study, we can conclude that the concept “right radicalism” is one of the most debatable in modern political science and the relevance of its study is not in doubt. The analysis of the program document of one of the oldest extreme right-wing parties in Europe shows that ideological discourse is formed from various components and, using various methods, the researcher can analyze its structure in detail, understanding how political forces form this discourse within the framework of the political struggle.

For the first time, a simple and sensitive electrochemical sensor based on a screen printed electrode (SPE) modified with titanium dioxide (TiO

For the first time, a simple and sensitive electrochemical sensor based on a screen printed electrode (SPE) modified with titanium dioxide (TiO2) and polytriazine imide submicrostructured composite (TiO2-PTI) has been developed for the simultaneous detection of fipronil (FIP) and its toxic metabolite fipronil sulfone (FIP-S). The submicrostructured composite material based on TiO2 and PTI was obtained by simple hydrothermal treatment of the Ti peroxocomplexes in the presence of pristine. This carbon nitride allotrope has better crystallinity and conductivity than its graphitic analog. It was found that the TiO2-PTI submicrostructured composite enhanced the electrochemical sensing of the SPE electrode towards FIP and its metabolite FIP-S in 0.1 M Britton-Robinson buffer (pH 10) at the oxidation potentials of 0.82 V and 0.94 V, respectively. In addition, it showed good stability and reproducibility for the determination of both analytes. Under optimal conditions, the peak currents by square wave voltammetry were found to vary linearly with FIP and FIP-S concentrations in the range from 0.01 to 10 μM and from 10 to 50 μM, with a detection limit of 8.42 nM, 3.6 μg/kg for FIP and 9.72 nM, 4.04 μg/kg for FIP-S. This sensor was successfully used to detect FIP and FIP-S in eggs and water samples with good recoveries of 90%–106.6%, which was validated by liquid chromatography tandem mass spectrometry.