Proton polarizability effect in the hyperfine splitting of the hydrogen atom

The contribution of the proton polarizability to the ground state hyperfine splitting in the hydrogen atom is evaluated on the basis of isobar model and evolution equations for the parton distributions. The contributions of the Born terms, vector meson exchanges and nucleon resonances are taken into account in the construction of the proton polarized structure functions $g_{1,2}(W,Q^2)$. Numerical values of this effect are equal $(2.2\pm 0.8)\times 10^{-6}$ times the Fermi splitting in electronic hydrogen and $(4.70\pm 1.04)\times 10^{-4}$ times the Fermi splitting in muonic hydrogen.Comment: 11 pages, 5 figure

Modeling of matrix of correspondences of transactivator on example of the Yekaterinburg municipal unitary enterprise "Tram and trolleybus management"

Настоящая статья посвящена исследованию пассажиропотока транспортной сети городского электротранспорта г. Екатеринбурга на примере ЕМУП «Трамвайно-троллейбусное управление». Разработано программное приложение для анализа транзакциопотока трамвайно-троллейбусной сети в виде матрицы корреспонденций. Приложение c помощью SQL запросов формирует отчет в виде таблицы, результаты которой позволяют построить графы перемещения пассажиров между административными районами и внутри их. Графическое представление результатов анализа транзакциопотока визуализирует аналитическую обработку статистических данных об использовании городского электротранспорта в различных районах г. Екатеринбурга.This article is dedicated to research of urban passenger of a transport network electric transport Yekaterinburg on the example of municipal unitary enterprise "Tram and trolleybus management". Programmatic application is worked out for the analysis of transactivator of tram-car-trolleybus network as a matrix of correspondences. Appendix a report forms the c help of SQL of queries as a table the results of that allow to build the columns of moving of passengers between administrative districts and into them. Graphic presentation of results of analysis of transactivator visualizes the analytical processing of statistical data about the use of municipal electric transport in different districts Yekaterinburg

The use of morphobiological characteristics in the selection of Phacelia Tanacetifolia Benth

The aim of the work is to create new adapted varieties resistant to the complex of biotic and abiotic factors on the basis of the use of Phacelia tanacetifolia Benth. morphological and biological characteristic

Biological resources of natural forage grassland of the cretaceous south of the European Russia

The main objective of the made researches was assessment of territorial confinedness of economic and valuable plant species and also a status and productivity of a natural forage grassland within agrolandscapes of the cretaceous South of the European Russia (the territory of the Belgorod region). Biological and vegetable resources of the natural forage grasslands of the East part of the Belgorod region in a subband of the southern forest-steppe were studie

Biological resources of the Fabaceae family in the Cretaceous south of Russia as a source of starting material for drought-resistance selection

The aim of this work is the study of biological resources of the genera Medicago and Trifolium species in Cretaceous South of the Central Russian Upland as the most valuable in genetic and economic term

Features of intra population variability of Medicago varia Mart. with the expressed mf-mutation on a complex qualitative characteristics

The purpose of this work was studying of features of intra population variability of a lucerne with a mf-mutation on a complex of the qualitative signs, valuable as for the forage production as well as for the pharmaceutical industr

Analysis of the infectious agent’s structure and antibiotic resistance parameters in patients in intensive care units of a multidisciplinary hospital

Introduction.  Nosocomial infections are a common complication in patients treated in the intensive care unit (ICU). Microorganisms with multidrug resistance are one of the significant risk factors for death in this category of patients. Aim. To study structure of infectious agents in ICU patients and parameters of their antibiotic resistance.  Materials and methods. Retrospective pharmacoepidemiological study of medical records of adult patients with infections diagnosed in ICU who were treated in City Clinical Hospital No. 24 of the Department of Health (Moscow, Russian Federation) in the period 08/20/2022 — 07/31/2023 (n=199). The analysis (gender, age of patients, localization of the infectious process, data on the structure of pathogens and sensitivity to antibacterial drugs) included records with data on bacterial culture ( n=141). Results. In the structure of pathogens detected in ICU patients, gram-negative microflora predominated (54 %). Among the pathogens with a clinically significant growth, leaders were  K. pneumoniae (22 %), Candida spp. (20 %) and  Staphylococcus  spp. (19 %). K. pneumoniae was characterized by resistance to beta-lactams, aminoglycosides, and levofloxacin, the highest susceptibility was reported to colistin, 88.9 %.  Candida  spp. was overwhelmingly susceptible to all drugs used. Among Staphylococ caceae, S. aureus  was the most common (70 % resistance to ampicillin and cefoxitin).  Conclusion.  In the structure of infectious agents detected in ICU patients, a predominance of ESKAPE pathogens (the most prognostically important microorganisms: Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Enterobacter spp.) was observed, including K. pneumoniae, S. aureus, A. baumannii, P. aeruginosa.  For all these microorganisms, except for Staphylococcaceae, a high level of antibiotic resistance was demonstrated

Some ways of filling of the vascular bed of domestic animals

In this work the assessment of some methods of filling of the mammals blood channels is presented. As injection masses there were used the gelatine solution of 5%, painted with the ink by Borisevich V.B. technique and the solution consisting of Bustilat-M glue and the water in a proportion of 2:1. The conducted researches showed that the most successful, in terms of simplicity of execution, is filling of vessels with the solution consisting of Bustilat-M glue and water, as it allows with the little effort and with the smallest expenses to fill in both large and average vessel

THE EFFECT OF HYPOXIC BRAIN DAMAGE ON THE SURVIVAL OF PREMATURE INFANTS

The central nervous system injuries are a common neonatal pathology, hypoxia being one of the main causes of cerebral dysfunction. The purpose of this study was studying the incidence of hypoxic cerebral disorders in premature infants with an extremely low body weight and a very low birth weight and revealing the risk factors that adversely affected the disease outcome. The subject of the study was preterm infants whose gestational age did not exceed 31 weeks. The main criterion for inclusion into the study was the presence of hypoxic-ischemic and hypoxic-hemorrhagic brain damage. To reveal the perinatal risk factors, the somatic health of mothers, and pregnancy and childbirth peculiarities were studied. The structure of children’s pathology and intensive care techniques were analyzed. Cerebral disorders were verified in 42 out of 176 patients (23.5 %). 2–3rd-degree intraventricular hemorrhage was diagnosed in 34 newborns (80.9 %), severe ischemia in 8 children (19.1 %). To determine the structure of the disease outcome, all children were divided into deceased and survivors. A fatal outcome was observed in 14 cases (33.3 %). The mothers of deceased children were more likely to have obstetric and concomitant extragenital pathologies. Analysis of pediatric pathology showed that the hemodynamically significant functioning arterial duct and severe asphyxia in childbirth were much more frequent in deceased children. Intensive therapy of deceased children included «hard» parameters of artificial ventilation and high doses of cardiotonic drugs. Thus the presented risk factors can be considered as predictors of an unfavorable outcome in children with this pathology

Ecological features of species diversity and pollinator species on m. sativa seed crops

The condition and dynamics of the entomophilic fauna of Medicago sativa L. seeds in the cultivated lands of the Belgorod region were studied, using insecticides and without treatment. The species composition of pests, entomophages and pollinators on seed crops M. sativa is found. 17% of pollinator species have been found to belong to the family Megachilidae. The species density of the entomofauna of potential pollinators after treatment with insecticide decreased by a factor of 2. The Menhinick index is also down on 50%, indicating a decrease in species diversit