Psychological Development of Children Exposed to Radiation in Prenatal Period as a Result of Chernobyl Disaster

The longitudinal investigation of 154 children at the age of 6-7 years has been conducted. At the moment of the Chernobyl disaster the children had undergone to radiation exposure in the 30-km zone around the Chernobyl atomic power station and in other areas of severe radiation control in different terms of gestation. The examination included the study of the neuro-psychiatric status as well as psychological testing by the Wechsler Intelligence Scale for Children, clinical-psychological investigation of parents and electrophysiological investigation (EEG). The children exposed to the influence of radionuclides during the prenatal period (the children of the exposed group) manifested significant increase of mental disorders as compared with the control group (90 children of the same age from noncontaminated rural areas of Belarus), which was mainly due to the prevalence of cases of specific developmental disorders of speech and language (18.8 vs 2.2% ; P = 0.0410) and emotional disorders (20.1 vs 6.7% ; P = 0.0047). The average group intelligence quotient (IQ) of the children of the exposed group was relevantly lower than the corresponding average group IQ of the children belonging to the control group (85.4 vs 92.5 ; F001 = 2.44). The frequency of reduced intellectual norm (IQ = 80-89) (44.1 vs 26.7 ; P = 0.0065) and borderline intellectual functioning (IQ = 70-79) (18.8 vs 7.8% ; P = 0.0188) as well as abnormal findings of EEG (15.6 vs 2.2% ; P = 0.0005) was higher in the exposed group than in the control group

Analytical formulation of an oscillatory system with hereditary-type dry friction and oscillation constraints

The dynamics of a shock-vibrating system is analyzed. The system consists of a pair of bodies of friction, one of which is under the effect of an external periodic force; the vibration of one of the bodies is limited by a rigid obstacle, and the hereditary-type dry friction forces during their interaction are taken into account. A numerical-analytical approach using the mathematical apparatus of the point mapping method is implemented to analyze the phase portrait structure of the mathematical model as a function of the characteristics of the sliding and state friction forces, as well as of the type and position of the vibration limiter. Based on the character of changes in the bifurcation diagrams, the authors have determined the main laws of changes in the motion regimes (occurrence of random complexity periodic motion regimes and possible transfer to chaos via the period doubling process) when changing the parameters. Analytical results with and without a vibration limiter are compared

Participation of Statistical Committees and Scientific Public Organizations of Siberia in Population Censuses in the Second Half of the 19th Century

The interrelation between development of the state, administrative statistics, scientific knowledge and organization of population censuses in the European countries and Russia is considered. Formation is traced and the main directions of activity of provincial and regional statistical committees are revealed. Particular attention is paid to the role of Siberian statistical committees in organizing the city one-day and the first general population census of the Russian Empire in 1897. Data about participation in the census of Tobolsk and the Trans-Baikal committees are provided. The problems of financing, methodological base formation and staffing in the process of census companies are touched upon. The institutions responsible for preparation of the all-Russian population census of 1897 are named. Features of the organization of the first general census in Siberia are investigated. Common features in the development of statistical committees and scientific societies are analyzed separately. The contribution of the Siberian departments of the Imperial Russian Geographical Society, the Society of Altai explorers to the preparation and conduct of population censuses in Irkutsk, Omsk and Barnaul is studied. The author emphasizes the importance of population censuses in the activities of provincial and regional statistical committees, scientific societies of Siberia in the second half of the 19th century

Correction of the Lower Third of the Face and Submental Area in Various Types of Aging with Laser-Assisted Liposuction

Age-related changes in the face - at all times were not a desirable phenomenon in socially active and successful people. In modern society, success is primarily identified with an attractive appearance and a healthy lifestyle. Healthy lifestyle is actively promoted in mass media, this message has many followers all over the world. The most striking manifestations of age-related changes are concentrated in the lower third of the face and submental area, which is manifested in violation of the contours of the jaw line, as well as in the smoothing of the cervical - chin angle. In some genetic features, such as micrognathia, these changes lead to the visual perception of the face less young than it actually is, even without obvious manifestations in other areas of the face. We have developed and put into practice a minimally invasive method for correcting the lower third of the face and the submental area, using laser-assisted liposuction, with various degrees of age-related changes. Which allows you to effectively deal with this problem

State Support for Activities of Siberian (East Siberian) Department of Imperial Russian Geographical Society in Second Half of 19th Century

Using the example of the Imperial Russian Geographical Society (IRGS) and its Siberian Department (SD), the topical problem of interaction between public organizations and government in Russia in the pre-Soviet period is touched upon in the article. The idea is substantiated that public organizations, depending on the significance of the work performed, received legal support and material and financial assistance from the state. The internal and external political prerequisites for the establishment of SD IRGS, the participation of the department in the development of Eastern Siberia and the Far East are shown. The influence of the higher Siberian administration on the organization of scientific and expeditionary activities of the department is considered. It is noted that the annual state subsidy was the core of the budget of the IRGS and its branches. Data that demonstrate the ratio of funds received by SD IRGS from the state treasury and other sources are given. It is emphasized that the participation of the state in the material and financial support of the department was not limited to the granting of a subsidy: the opportunity to use free postage of parcels and written correspondence was given to SD IRGS. The central authorities and the highest Siberian administration allocated additional funds for scientific expeditions and trips of members of the department. Based on the information provided, it is concluded that the state thereby guaranteed the existence of society

Dynamics rammers with two pairs of shock generators

The results of a numerical-analytic study for the dynamics of a vibro-impact mechanism with a crank vibration generator are presented in this paper. We show bifurcation diagrams and stability regions that let us find basic patterns in the reorganization of motion modes when the mechanism’s parameters change

Factors of Women’s Inclusion into the Scientific Sphere and their Participation in Study of Siberia in Second Half of the XIX - Early XX Centuries

The results of a study on the participation of women in the study of the Siberian region in the second half of the XIX - early XX centuries are presented in the article. It is noted that women constantly had to face various obstacles and difficulties on the scientific path, caused by gender stereotypes, while the position of women in Siberian society had certain characteristics. The factors of women's inclusion into the scientific sphere are revealed in detail: the development of the educational system, the emergence of the first higher educational institutions, the creation of scientific institutions, the formation of civic consciousness, joint scientific studies and the legitimization of scientific activity through spouses. The main directions of local history research are shown. On the example of the activities of M. I. Molleson, V. A. Balandina, A. D. Kornakova, M. V. Krasnozhenova and others, the contribution of women to the description of nature and climate, natural resources, ethnography of the peoples of Siberia, the establishment of museum business is examined. Separately, the author pays attention to female charity for the needs of science in the Siberian region. Significant funds for research purposes were donated by E. P. and Yu. P. Kuznetsovs, A. I. Gromova, E. I. Goldobina. The activities of some Siberians were highly appreciated by contemporaries and awarded by scientific institutions of Russia. When writing the article, the author used numerous reports and works of scientific and local history organizations, which made it possible to identify the names of many women who participated in their work

Creation and Activity of Priamursk Military Topographic Department in Late 19th — Early 20th Centuries

The history of the emergence and development of the military topographic service in the Far East in the pre-Soviet period is considered. Close attention is paid to the prerequisites for the creation of the Amur military topographic department. The role of the ranks of the Corps of Military Topographers and the East Siberian Military Topographic Department in the annexation and development of the Amur Region and the Ussuri Region in the second half of the 19th century is shown. Changes in the numerical strength of the Amur military-topographic department are traced. The significance of topographic and astronomical-geodetic works for solving the problems of the foreign policy of the Russian Empire in the East Asian region is revealed. The activities of the Amur department in Manchuria, the participation of military topographers in the events of the Russian-Japanese war of 1904—1905 are disclosed in detail. The contribution of the Amur department to the economic development of the south of the Far East and Transbaikalia is revealed. The work of topographers in the framework of auxiliary measures for the construction of the Transsib and the Amur railway, during geological research in the Primorsko-Amur gold-bearing regions is presented. In conclusion the results are summarized, data that confirm that the activities of military topographers in the Far East were not limited to the performance of some military functions and was intended to ensure the interests of various government institutions and departments is provided