Peculiarities of the clinical course of the postinfarcti on period in the workers of mining production.

Objective: to study the features of the clinical course of the post-infarction period in mining workers. 102 patients with mining working experience from 12 to 35 years were examined. The diagnosis of a previous myocardial infarction (MI) was verified on the basis of anamnesis (analysis of medical documentation), if there are signs of cicatricial changes in the myocardium and zones of left ventricular myocardial asynergy on the electrocardiogram (ECG) according to the ultrasound of the heart. All patients underwent general clinical examination according to generally accepted standard criteria. ECG registration was performed in the classical 12 lead systems, as well as in the V3R-V5R at rest state and at the state of the dosed physical activity. The structural and functional state of the heart was examined using the "HDI - 1500" apparatus by a standard procedure. It is established that risk of MI in mining workers with CHD increases over the age of 40 years mainly and after 10 years of work in unfavorable industrial environments. Predictors of HF in post-MI miners are: age over 40 years, a segment-elevation myocardial infarction with ST, a front localization of infarction, complications in acute MI period, especially of cardiac arrhythmias and conductivity

Peculiarities of the clinical course of the postinfarcti on period in the workers of mining production.

Objective: to study the features of the clinical course of the post-infarction period in mining workers. 102 patients with mining working experience from 12 to 35 years were examined. The diagnosis of a previous myocardial infarction (MI) was verified on the basis of anamnesis (analysis of medical documentation), if there are signs of cicatricial changes in the myocardium and zones of left ventricular myocardial asynergy on the electrocardiogram (ECG) according to the ultrasound of the heart. All patients underwent general clinical examination according to generally accepted standard criteria. ECG registration was performed in the classical 12 lead systems, as well as in the V3R-V5R at rest state and at the state of the dosed physical activity. The structural and functional state of the heart was examined using the "HDI - 1500" apparatus by a standard procedure. It is established that risk of MI in mining workers with CHD increases over the age of 40 years mainly and after 10 years of work in unfavorable industrial environments. Predictors of HF in post-MI miners are: age over 40 years, a segment-elevation myocardial infarction with ST, a front localization of infarction, complications in acute MI period, especially of cardiac arrhythmias and conductivity

Modal Phenomena of Surface and Bulk Polaritons in Magnetic- Semiconductor Superlattices

We discuss peculiarities of bulk and surface polaritons propagating in a composite magnetic-semiconductor superlattice influenced by an external static magnetic field. Three particular configurations of magnetization, namely, the Voigt, polar, and Faraday geometries, are considered. In the long-wavelength limit, involving the effective medium theory, the proposed superlattice is described as an anisotropic uniform medium defined by the tensors of effective permittivity and effective permeability. The study is carried out in the frequency band where the characteristic resonant frequencies of underlying constitutive magnetic and semiconductor materials of the superlattice are different but closely spaced. The effects of mode crossing and anti-crossing in dispersion characteristics of both bulk and surface polaritons are revealed and explained with an assistance of the concept of Morse critical points from the catastrophe theory

International Practices of Auditing and Controlling Transfer Pricing

The aim of the article is to analyze international practices in the field of auditing and controlling transfer pricing and determine the directions of its use in the practice of auditing and controlling in Ukraine. The globalization and European integration processes taking place in Ukraine have resulted in supplementing its legislation with international norms and rules in the field of preventing tax fraud in enterprises due to transfer pricing. The chronological sequence of introducing control over transfer pricing in different countries of the world is determined. Based on the analysis of international practices in the field of controlling transfer pricing, it is found out that 33 countries use the uncontrolled price method as a priority one, 9 countries use methods that differ from those recommended by the OECD Guidelines, 5 countries regulate the sequence of applying the methods, 2 countries do not use any of transfer pricing methods, and 2 countries use all the existing transfer pricing methods. The practices of foreign countries that have significantly improved their legislation as regards auditing and controlling transfer pricing can become the basis for the formation of an effective system of independent and state audit and control of transfer prices. The analysis of the legislation of various countries in the field of transfer pricing control and their practices allowed identifying diverse control methods, types of restrictions for external operations and types of controlled prices. This indicates the specificity of implementing transfer pricing control depending on the level of the country’s economic development, practices of tax control of the majority of powerful corporations, and the degree of involvement in international trade

Formation of ultrashort triangular pulses in optical fibers

Specialty shape ultrashort optical pulses, and triangular pulses in particular, are of great interest in optical signal processing. Compact fiber-based techniques for producing the special pulse waveforms from Gaussian or secant pulses delivered by modern ultrafast lasers are in demand in telecommunications. Using the nonlinear Schr¨odinger equation in an extended form the transformation of ultrashort pulses in a fiber towards triangular shape is characterized by the misfit parameter under variety of incident pulse shapes, energies, and chirps. It is shown that short (1-2 m) conventional single mode fiber can be used for triangular pulse formation in the steady-state regime without any pre-chirping if femtosecond pulses are used for pumping. The pulses obtained are stable and demonstrate linear chirp. The ranges and combinations of the pulse parameters found here will serve as a guide for scheduling the experiments and implementation of various all-fiber schemes for optical signal processing