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The scientific research illustrates that the eigenfrequencies of vibrations of an elastic spherical layer located in an infinite elastic medium are investigated. The problem of natural and forced oscillations is solved by reduction to a plane problem of elasticity theory. The spectrum of complex natural frequencies for spherical mechanical systems in an elastic medium is obtained in this work depending on various geometric and mechanical parameters of the system.

The aim of this study is to improve the results of surgical treatment of Hirschsprung's disease in infants by choosing the most effective method. This article presents the results of the treatment of Hirschsprung's disease in 61 patients of infancy. However, immediate and long-term results of the children's treatment with HD, operated on in infancy, using the traditional Soave-Boley method and modern minimally invasive technologies according to TENTC and the Georgeson method, which show different results, have been studied. Among 26 patients who had been operated on by the Soave - Boley method, the following results were obtained : excellent - in 10 (38.4%); good - in 8 (30.7%); satisfactory - in 6 (23%) and unsatisfactory - in 2 (7.6%). Among 29 patients operated on by the TEPT method, except for one patient, excellent and good results were obtained in 28 (96.6%) patients. What is more, among 6 patients who had been operated on by the Georgeson method, excellent and good results were obtained in all cases; there were no satisfactory or unsatisfactory results. It should be noted that among the operated HD patients according to the Soave-Boley method, there were severe patients, of which 7 patients had a colostomy in the neonatal period. At the same time, radical one-stage surgical treatment for distal forms of HD using minimally invasive TEPT method is a priority in infancy, which can reduce complications to a minimum with improved functional outcomes of treatment, relative to two-stage treatment. [ABSTRACT FROM AUTHOR]

Analysis of regional cooperation among Central Asian countries for dealing with issues like natural disasters, drugs, crime, and terrorism is presented, with reference to the relevant policies followed by the government of Uzbekistan.

A comparative analysis of the results of surgical treatment of esophageal atresia (EA) with the use of advanced and traditional methods was performed. The case histories of 192 newborns whose primary esophageal anastomosis was performed from 2006 to 2015 were studied. Group 1 included 127 children operated by improved method since 2009; Group 2 consisted of 65 children operated by traditional method. [ABSTRACT FROM AUTHOR]