Finite groups whose maximal subgroups have the hall property

We study the structure of finite groups whosemaximal subgroups have the Hall property. We prove that such a group G has at most one non-Abelian composition factor, the solvable radical S(G) admits a Sylow series, the action of G on sections of this series is irreducible, the series is invariant with respect to this action, and the quotient group G/S(G) is either trivial or isomorphic to PSL2(7), PSL2(11), or PSL5(2). As a corollary, we show that every maximal subgroup of G is complemented. © 2013 Allerton Press, Inc

Coulomb singularity effects in tunnelling spectroscopy of individual impurities

Non-equilibrium Coulomb effects in resonant tunnelling processes through deep impurity states are analyzed. It is shown that Coulomb vertex corrections to the tunnelling transfer amplitude lead to a power-law singularity in current- voltage characteristicsComment: 7 pages, 2 figure

Impact of Cooling Character on Structure and CTE of Cast Invar Alloy Made From Secondary Raw Materials

Metallography analysis of invar alloys made from secondary raw materials and crystallized with different cooling rates has been carried out. The study has demonstrated that velocity of crystallization has an impact on the dispersity of graphite. The higher velocity of cooling, the more dispersive graphite is. The volume percentage of graphite in alloy, crystallized with high cooling rate, is lower than compared with low cooling rate. Crystallization with low cooling rate leads to the reduction of the amount of carbon into g-phase. The coefficient of thermal expansion is basically depends on the amount of carbon into g-phase. Keywords: invar, alloying, carbon

Areoana analysis of moss leaf cell structure of two Cyrtomnium species (Mniaceae, Bryophyta)

Two species of the moss genus Cyrtomnium were studied for the parameters of their leaf cells. The computer program AREOANA, specially designed for this kind of studies, allows involving large datasets in the analysis. In this study, it processed 81 leaves with altogether 140 000 cellsyesBelgorod State National Research Universit

Convergence of institutes of functional representation of group interests under transformation of social processes, quality of life, and human capital

This article substantiates the influence of mechanisms, methods, and technologies of a functional representation of group interests on the strategic management of socio-economic processes in the context of geopolitical turbulenc

АНАТОМИЯ НЕРВНОЙ СИСТЕМЫ СЕМЕЙСТВА DOLICHOPODIDAE (DIPTERA)

Описано строение грудной и брюшной нервной системы представителей родов Argyra, Dolichopus и Hercostomus семейства Dolichopodidae

Влияние Лазерного Облучения на Активность Бактерий Bacillus Subtilis и Pseudomonas Fluorescens

The paper discusses the problem of increasing the activity of phytopathogen-antagonistic bacteria under the effect of laser irradiation. It has been shown that short-term treatment of cells of Bacillus subtilis and Pseudomonas fluorescens with coherent light can increase bacterial growth rate and improve their fungicidal activity. It ensures high efficiency of environmentally safe measures for biological monitoring of plant diseases, which is in line with the principles of organic farming.El artículo analiza el problema de aumentar la actividad de las bacterias antagonistas de fitopatógenos bajo el efecto de la irradiación con láser. Se ha demostrado que el tratamiento a corto plazo de las células de Bacillus subtilis y Pseudomonas fluorescens con luz coherente puede aumentar la tasa de crecimiento bacteriano y mejorar su actividad fungicida. Asegura una alta eficiencia de las medidas ambientalmente seguras para el monitoreo biológico de las enfermedades de las plantas, lo cual está en línea con los principios de la agricultura orgánica.Обсуждается проблема повышения активности бактерий-антагонистов фитопатогенов под действием лазерного облучения. Показано, что кратковременная обработка когерентным светом клеток Bacillus subtilis и Pseudomonas fluorescenсs способна повысить скорость размножения бактерий и усилить их фунгицидную активность. Это обеспечивает высокую эффективность экологически безопасных мероприятий по биоконтролю болезней растений, что соответствует принципам органического земледелия