Partner symmetries of the complex Monge-Ampere equation yield hyper-Kahler metrics without continuous symmetries

We extend the Mason-Newman Lax pair for the elliptic complex Monge-Amp\`ere equation so that this equation itself emerges as an algebraic consequence. We regard the function in the extended Lax equations as a complex potential. We identify the real and imaginary parts of the potential, which we call partner symmetries, with the translational and dilatational symmetry characteristics respectively. Then we choose the dilatational symmetry characteristic as the new unknown replacing the K\"ahler potential which directly leads to a Legendre transformation and to a set of linear equations satisfied by a single real potential. This enables us to construct non-invariant solutions of the Legendre transform of the complex Monge-Amp\`ere equation and obtain hyper-K\"ahler metrics with anti-self-dual Riemann curvature 2-form that admit no Killing vectors.Comment: submitted to J. Phys.

Universal low-energy properties of three two-dimensional particles

Universal low-energy properties are studied for three identical bosons confined in two dimensions. The short-range pair-wise interaction in the low-energy limit is described by means of the boundary condition model. The wave function is expanded in a set of eigenfunctions on the hypersphere and the system of hyper-radial equations is used to obtain analytical and numerical results. Within the framework of this method, exact analytical expressions are derived for the eigenpotentials and the coupling terms of hyper-radial equations. The derivation of the coupling terms is generally applicable to a variety of three-body problems provided the interaction is described by the boundary condition model. The asymptotic form of the total wave function at a small and a large hyper-radius $\rho$ is studied and the universal logarithmic dependence $\sim \ln^3 \rho$ in the vicinity of the triple-collision point is derived. Precise three-body binding energies and the $2 + 1$ scattering length are calculated.Comment: 30 pages with 13 figure

Dynamics of alcohol consumption by the population of Russia and the Sverdlovsk region

The article presents statistical data on the use of alcohol, as well as cases of poisoning and mortality from the use of alcohol in Russia and the Sverdlovsk region.В статье представлены статистические данные по употреблению алкоголя, а также случаям отравлений и смертности от употребления алкоголя в России и Свердловской области

Dynamics of alcohol consumption by the population of Russia and the Sverdlovsk region

The article presents statistical data on the use of alcohol, as well as cases of poisoning and mortality from the use of alcohol in Russia and the Sverdlovsk region.В статье представлены статистические данные по употреблению алкоголя, а также случаям отравлений и смертности от употребления алкоголя в России и Свердловской области

Morbidity with temporary incapacity for work in the Southern Federal District of Russia. Selected indicators

Objective: To analyze the patterns of morbidity with temporary incapacity for work in the Southern Federal District of the Russian Federation.Materials and Methods: The object of the study is a unified interagency analytics platform. The subject of the research is the indicators of morbidity with temporary incapacity for work of the working population of the constituent entities of the Russian Federation of the Southern Federal District over 2005–2019: “The number of cases of temporary incapacity for work per 100 employees”, “The number of days of temporary incapacity for work per 100 employees”. The descriptive statistics methods were applied.Results: The studied statistical indicators of temporary incapacity for work reveal a steady positive trend in the morbidity rate of the working population in all the constituent entities of the Southern Federal District. From 2014 to 2015, there was a significant reduction in the indicators of temporary incapacity for work in all the constituent entities of the district. The indicators in all the studied constituent entities simultaneously declined, this decline being more prominent than in the previous 10 years. The data of the federal statistical monitoring does not represent an overall set of cases and days of temporary incapacity for work.Summary: It is deemed essential to amend Order of The Russian Federal Service for Statistics No. 723. All individuals and legal entities involved in medical activities for the examination of temporary incapacity for work in the relevant region must provide reports in accordance with Form 16-VN to the competent authorities of the constituent entities of the Russian Federation

The relationship of birth weight with physical activity and stressful events in mother's life before and during pregnancy.

Open Access. In Russian (Abstract and References in English

Comparative assessment of mortality in the subjects of the Russian Federation with different levels of influence of socio-economic risk factors

We made a comparative assessment of mortality in the subjects of the Russian Federation depending on the influence of various risk factors established within the system of socio-hygienic monitoring.Проведена сравнительная оценка смертности населения в субъектах Российской Федерации в зависимости от степени влияния факторов риска, установленных в системе социально-гигиенического мониторинга

Development of method approaches to the use of regression models for assessment of health effects of socio-economic risk factors in the system of socio-hygienic monitoring (experience of the Sverdlovsk region)

The analysis of socio-hygienic monitoring data showed statistically significant correlations between the mortality in working-age population and socio-economic indices (modern conveniences in homes, availability of medical aid, the portion of pensioners, and the level of unemployment) and also between their increases with account for the time lag. The highest (by module) coefficients of correlation between the increase in socio-econom ic risk factors and the change in the working-age mortality rate were found with the time lag of 1 year. For a more adequate decision making related to effects of socio-economic factors indicator rates in the sphere of securing sanitary and epidemiologic welfare of the population were identified.Проведенный анализ данных социально-гигиенического мониторинга показал наличие статистически значимых корреляционных связей между смертностью населения в трудоспособном возрасте и социально-экономическими показателями (степень благоустройства жилья, обеспеченность врачами, доля пенсионеров и уровень безработицы), а также между их приращениями с учетом временных сдвигов. Наибольшие (по модулю) коэффициенты корреляции между приращениями социально-экономических факторов риска и изменением показателя смертности в трудоспособном возрасте отмечены при временном сдвиге 1 год. Выявлены индикаторные показатели в сфере обеспечения санитарно-эпидемиологического благополучия населения для более адекватного принятия управленческих решений в связи с воздействием социально-экономических факторов

Disease rate dynamics among teenagers of Yekaterinburg over a three-year period

The articles presents trends in disease rates among teenagers of Yekaterinburg over a three-year period. The survey of adolescents showed the prevalence of such chronic diseases as obesity (45%), diabetes mellitus types I and II (21%), gastritis (9%), gastric and duodenal ulcer (10%), etc. Priority health risk factors are indicated for further implementation of adequate preventive actions.В статье представлены тенденции изменения заболеваемости подростков на территории города Екатеринбурга за три года. Данные анкетирования подростков свидетельствуют о распространенности среди студентов таких хронических заболеваний, как ожирение (45%), сахарный диабет I и II типов (21%), гастрит (9%), язвенная болезнь желудка и двенадцатиперстной кишки (10%) и др. Приведены приоритетные факторы риска, влияющие на показатели здоровья, для реализации адекватных мер профилактики

Methodical approaches to assessing nutrition of various population groups in the system of socio-hygienic monitoring of the Sverdlovsk region

Methodical approaches to studying the dietary pattern of various population groups in the system of socio-hygienic monitoring have been introduced in the Sverdlovsk region for assessment of chemical risk, development of proposals concerning planning baseline and optimized monitoring, substantiation of the most effective actions aimed to the diet correction and prevention of diseases related to the chemical exposure.В Свердловской области внедрены методические подходы к изучению структуры питания различных групп населения в системе социально-гигиенического мониторинга для оценки химического риска, разработки предложений по планированию фонового и оптимизированного мониторинга, обоснованию наиболее эффективных мероприятий, направленных на коррекцию рационов питания и профилактику заболеваний, связанных с химической нагрузкой