Analytical-numerical methods of calculations of energy and three-dimensional particle distributions in electromagnetic cascades

Analytical and numerical methods of calculation of the energy and three dimensional EPS characteristics are reported. The angular and lateral functions of electrons in EPS have been obtained by the Landau and small angle approximations A and B and compared with earlier data. A numerical method of solution of cascade equations for the EPS distribution function moments has been constructed. Considering the equilibrium rms angle as an example, errors appearing when approximating the elementary process cross sections by their asymptotic expressions are analyzed

International Experience of Patriotic Education of Younger Generation

The article substantiates the need to combine the efforts of political institutions and civil society in the development of a unified approach to the implementation of Patriotic education in educational institutions. The author reveals the main aspects of the formation of patriotism in the younger generation of the USA and China, analyzes the role of «teacher» in this process, and also reveals the activities that are carried out by the state in this direction. The formation of patriotism in foreign countries is carried out according to the development of historical, cultural, moral, ideological and life values embodied in the motto: in the US — «Novus Ordo Seclorum» («New world order»), in China — «Serve the people!

Color-flavor locked superconductor in a magnetic field

We study the effects of moderately strong magnetic fields on the properties of color-flavor locked color superconducting quark matter in the framework of the Nambu-Jona-Lasinio model. We find that the energy gaps, which describe the color superconducting pairing as well as the magnetization, are oscillating functions of the magnetic field. Also, we observe that the oscillations of the magnetization can be so strong that homogeneous quark matter becomes metastable for a range of parameters. We suggest that this points to the possibility of magnetic domains or other types of magnetic inhomogeneities in the quark cores of magnetars.Comment: 12 pages, 3 figures. Version accepted for publication in Phys. Rev.

Gluonic phases, vector condensates, and exotic hadrons in dense QCD

We study the dynamics in phases with vector condensates of gluons (gluonic phases) in dense two-flavor quark matter. These phases yield an example of dynamics in which the Higgs mechanism is provided by condensates of gauge (or gauge plus scalar) fields. Because vacuum expectation values of spatial components of vector fields break the rotational symmetry, it is naturally to have a spontaneous breakdown both of external and internal symmetries in this case. In particular, by using the Ginzburg-Landau approach, we establish the existence of a gluonic phase with both the rotational symmetry and the electromagnetic U(1) being spontaneously broken. In other words, this phase describes an anisotropic medium in which the color and electric superconductivities coexist. It is shown that this phase corresponds to a minimum of the Ginzburg-Landau potential and, unlike the two-flavor superconducting (2SC) phase, it does not suffer from the chromomagnetic instability. The dual (confinement) description of its dynamics is developed and it is shown that there are light exotic vector hadrons in the spectrum, some of which condense. Because most of the initial symmetries in this system are spontaneously broken, its dynamics is very rich.Comment: 33 pages, RevTeX; v.2: Published PRD versio

Понятие конкурентоспособности продукции в современных условиях

У роботі досліджується суть поняття конкурентоспроможності продукції підприємства в сучасних умовах. Зосереджено увагу на недоліках визначення цього поняття різних авторів. Викладено власні погляди до розуміння конкурентоспроможності продукції та сформульовано власне визначення цього поняття.This article enlightens essence of concept of competitiveness of products of enterprise in the modern terms. Concentrated attention on the defects of determination of this concept of different authors. Expounded own looks to understanding of competitiveness of products and worded own determination of this concept.В работе исследуется суть понятия конкурентоспособности продукции предприятия в современных условиях. Сосредоточено внимание на недостатках определения этого понятия разными авторами. Изложены собственные взгляды к пониманию конкурентоспособности продукции и сформулировано собственное определение этого понятия

Quantitative characteristics of the neurotensin content in the hypothalamic arcuate nucleus in arterial hypertension of different etiologies

The aim of this work is to determine the features of the neurotensin content in the hypothalamic ARC in Wistar rat and SHR strains in arterial hypertension of different etiology: endocrine-salt and essential. Materials and methods. The study was performed on 24 adult male rats at the age of 13–14 months, weight of 250–270 g, which were divided into three experimental groups of 8 animals each. The 1st group (control) – Wistar rats with normal BP indices (Psys / Pdias = 110/75 ± 5 mm Hg), the 2nd – Wistar rats with endocrine-salt model of hypertension (Psys/Pdias = 145/110 ± 10 mm Hg); the 3rd – SHR with spontaneous arterial hypertension (Psys/Pdias = 150/110 ± 10 mm Hg). An immunohistochemical method was used to study the content of neurotensin in the arcuate nucleus, analyzed by digital processing with Image J and EXCEL-7.0. Results. Persistent increase in BP is accompanied by an increase in the content and concentration of neurotensin in the hypothalamic ARC, does not depend on the etiology of hypertension and has a compensatory character. In SHR with essential hypertension there is a higher expression of neurotensin in the hypothalamic ARC in comparison with the endocrine-salt model of hypertension, but the number of neurons involved in the synthesis and accumulation of the neurohormone is significantly lower, which characterizes the morphological features of cellular populations in the hypothalamus of the animals of this strain and can play a role in the development and progression of hypertension

Common vacuum conservation amplitude in the theory of the radiation of mirrors in two-dimensional space-time and of charges in four-dimensional space-time

The action changes (and thus the vacuum conservation amplitudes) in the proper-time representation are found for an accelerated mirror interacting with scalar and spinor vacuum fields in 1+1 space. They are shown to coincide to within the multiplier e^2 with the action changes of electric and scalar charges accelerated in 3+1 space. This coincidence is attributed to the fact that the Bose and Fermi pairs emitted by a mirror have the same spins 1 and 0 as do the photons and scalar quanta emitted by charges. It is shown that the propagation of virtual pairs in 1+1 space can be described by the causal Green's function \Delta_f(z,\mu) of the wave equation for 3+1 space. This is because the pairs can have any positive mass and their propagation function is represented by an integral of the causal propagation function of a massive particle in 1+1 space over mass which coincides with \Delta_f(z,\mu). In this integral the lower limit \mu is chosen small, but nonzero, to eliminate the infrared divergence. It is shown that the real and imaginary parts of the action change are related by dispersion relations, in which a mass parameter serves as the dispersion variable. They are a consequence of the same relations for \Delta_f(z,\mu). Therefore, the appearance of the real part of the action change is a direct consequence of the causality, according to which real part of \Delta_f(z,\mu) is nonzero only for timelike and zero intervals.Comment: 23 pages, Latex, revte

Rett syndrome: a clinical case

Background. Rett syndrome is a rare genetic disorder often mimicked by variant other illnesses, which hampers its timely diagnosis. Although knowledge of this pathology has grown remarkably over the past two decades, an appropriate diagnosis is necessary to exclude similar disease phenotypes and select an applicable therapy.Clinical Case Description. A 3-yo girl was admitted with a loss of earlier motor skills. The girl had neurological monitoring since month 2 of age for a delayed psychomotor development and had courses of neurotropic and reconstructive therapy, ineffective. At 18 months she was diagnosed with infantile cerebral palsy, residual period, atonic-astatic form, grade 3, rehabilitation therapy ineffective. With the disease progression and loss of motor skills, the girl was referred to the Bochkov Research Centre for Medical Genetics for sequence genotyping of the MECP2 gene, which determined a heterozygous single-nucleotide polymorphism c.468C>G (p.D156E) diagnostic of the Rett syndrome. The Rett syndrome has poor prognosis for progressive motor and neurological deficiency and eventual severe mental retardation. Patients with the Rett syndrome can have life expectancy of up to 40—50 years with appropriate care but incur a high risk of sudden death.Conclusion. The Rett syndrome is a rare disorder manifested by loss of earlier developed motor and speech skills. This report provides a clear case description and illustrates the difficulty of the syndrome timely diagnosis aggravated by a lack of specific paraclinical signatures. Molecular genotyping techniques allow a proper diagnosis and prognosis assessment in this pathology

Gravitational intraction on quantum level and consequences thereof

The notion of gravitational emission as an emission of the same level with electromagnetic emission is based on the proven fact of existence of electrons stationary states in its own gravitational field, characterized by gravitational constantComment: 22 pages, 9 figure

SOME PROPERTIES OF THE KERR SOLUTION TO LOW ENERGY STRING THEORY

The Kerr solution to axidilaton gravity is analyzed in the Debney--Kerr--Schild formalism. It is shown that the Kerr principal null congruence retains its property to be geodesic and shear free, however, the axidilatonic Kerr solution is not algebraically special. A limiting form of this solution is considered near the ring-like Kerr singularity. This limiting solution coincides with the field around a fundamental heterotic string obtained by Sen.Comment: 14 pages., LaTe