196 research outputs found

    Analysis of acute myocardial infarction occurance in Saratov region using GIS-technologies and prognostic modeling

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    <p> </p><p><em>The research objective: </em>To find estimation tools of incidence of acute myocardial infarction at the regional level and to optimize organization of medical assistance to patients with acute coronary pathology. <em>Materials. </em>With the use of statistics of territorial distribution of acute myocardial infarction incidence in the region and GIS-TECHNOLOGIES the statistical analysis and mathematical modelling of the spatially-organizational data has been carried out. <em>Results. </em>On the basis of the received results the prognostic model of development of acute coronary pathology has been generated. Measures on optimization of organization of medical assistance to patients with an acute coronary pathology have been stated. <em>Conclusion. </em>Methods of intellectual support of the doctor may become effective in formation of organizational structure of the system of stage-by-stage qualified and specialized aid to patients with acute coronary syndrome.</p&gt

    Extracts from Problems of Air Law, a collection of works of the Section of air law of the Aviakhim Society of the USSR and Aviakhim RSFSR

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    The difficulties of developing a body of international law to govern air travel is discussed. A summary of literature and agreements is presented as well as a brief history. Air space over the poles and the legality of methods of claiming territory in the polar regions is discussed

    Electromagnetic response of the three-layer construction on the basis of barium hexaferrite and a foam glass

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    This paper contains results of study of the frequency dependence of reflection coefficient of the ceramic surface coated with the construction consisting of following layers: metal, composite on the basis of ferrite with hexagonal structure, and foam glass. It is shown that foam glass layer reduces significantly the reflecting characteristics of the construction

    Hierarchic Superposition Revisited

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    Many applications of automated deduction require reasoning in first-order logic modulo background theories, in particular some form of integer arithmetic. A major unsolved research challenge is to design theorem provers that are "reasonably complete" even in the presence of free function symbols ranging into a background theory sort. The hierarchic superposition calculus of Bachmair, Ganzinger, and Waldmann already supports such symbols, but, as we demonstrate, not optimally. This paper aims to rectify the situation by introducing a novel form of clause abstraction, a core component in the hierarchic superposition calculus for transforming clauses into a form needed for internal operation. We argue for the benefits of the resulting calculus and provide two new completeness results: one for the fragment where all background-sorted terms are ground and another one for a special case of linear (integer or rational) arithmetic as a background theory

    EPIDEMIOLOGICAL FEATURES OF PSYCHOSOMATIC DISORDERS ON THE EXAMPLE OF OBESITY

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    The article describes the features of distribution and risk factors of psychosomatic disorders, according to epidemiological studies on the example of obesity. Currently there are about 1,7billion people with obesity in the world and there is and increase of number of children and adolescents with obesity. That allows to predict a sharp increase in the distribution of obesity in the future

    SOCIO-DEMOGRAPHIC AND EPIDEMIOLOGICAL ASPECTS OF CHILDREN AND ADOLESCENTS HEALTH OF THE SMALLER ETHNIC GROUPS LIVING IN SIBERIA (BY EXAMPLE OF TOFALARS PEOPLE)

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    This article is devoted to analysis of pathologic affect of child's and adolescent's population, living on the Tofalariya territory, as well as socio-economic factors influencing the health of the native population in the study area according to a sociological study. In a study conducted a thorough medical examination of children living in Tofalaria. And also a sample case study of families was conducted. The article examines a set of negative socio-economic factors, typical to the territory of Tofalars habitation (one parent family, factors of poor housing, low family income, low levels of parental education, nutritional imbalances). We can identify the low availability of health care for this population group in combination with their low medical activity. The self-assessment of health among the population of Tofalariya is overstated, probably due to the significantly low level of information awareness about the prevention of disease and methods of solution these problems

    Spectral-luminescence and magnetic relaxation properties of lanthanide-p-sulfonatothiacalix[4]arenes in aqueous solution of surfactants

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    The influence of nonionogenic, anionic and cationic surfactants on the magnetic relaxation and luminescence properties of gadolinium(III), terbium(III), and dysprosium(III) complexes with p-sulfonatothiacalix[4]arene (TCAS) was studied. It was shown that the presence of both neutral and anionic surfactant does not influence the magnetic relaxation properties of GdTCAS as well as on the luminescence intensity of the TbTCAS and DyTCAS complexes. The presence of cationic surfactant at the concentration less than critical micellar concentration led to the formation of associates with stoichiometric composition with the Tb (Dy, Gd) TCAS complexes. These associates are characterized by more intensive luminescence, as compared to the initial TbTCAS and DyTCAS complexes. © 2008 Springer Science+Business Media, Inc

    Resonant X-ray Scattering in Manganites - Study of Orbital Degree of Freedom -

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    Orbital degree of freedom of electrons and its interplay with spin, charge and lattice degrees of freedom are one of the central issues in colossal magnetoresistive manganites. The orbital degree of freedom has until recently remained hidden, since it does not couple directly to most of experimental probes. Development of synchrotron light sources has changed the situation; by the resonant x-ray scattering (RXS) technique the orbital ordering has successfully been observed . In this article, we review progress in the recent studies of RXS in manganites. We start with a detailed review of the RXS experiments applied to the orbital ordered manganites and other correlated electron systems. We derive the scattering cross section of RXS where the tensor character of the atomic scattering factor (ASF) with respect to the x-ray polarization is stressed. Microscopic mechanisms of the anisotropic tensor character of ASF is introduced and numerical results of ASF and the scattering intensity are presented. The azimuthal angle scan is a unique experimental method to identify RXS from the orbital degree of freedom. A theory of the azimuthal angle and polarization dependence of the RXS intensity is presented. The theoretical results show good agreement with the experiments in manganites. Apart from the microscopic description of ASF, a theoretical framework of RXS to relate directly to the 3d orbital is presented. The scattering cross section is represented by the correlation function of the pseudo-spin operator for the orbital degree of freedom. A theory is extended to the resonant inelastic x-ray scattering and methods to observe excitations of the orbital degree of freedom are proposed.Comment: 47 pages, 24 figures, submitted to Rep. Prog. Phy
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