Structure and Phase Composition of V-Al-N-C Master Alloy

The article presents the results of studying the phase composition and microstructure of the V-Al-N-C alloy, intended mainly for doping titanium alloys, but also of interest to manufacturers of structural steels. The V-Al-N-C alloy was obtained by the method of out-of-furnace aluminothermic smelting of a mixture containing vanadium pentoxide, aluminum powder, nitrided by the SHS method powdered V-Al-(17-20)N (wt.%) alloy and graphite in copper uncooled molds. The phase composition was determined by X-ray phase analysis (diffractometer - DRON-2.0, radiation - Cu-Kα, monochromator - graphite). The microstructure and composition of the phases were investigated by X-ray microanalysis using a JSM-59000LV scanning electron microscope ( Japan) and an Oxford INCA Energy 200 energy-dispersive X-ray spectrometer (United Kingdom). It is revealed that the matrix of the V-Al-N-C alloy, containing (wt. %): 73.9 V; 23.7 Al, 1.2 N, 0.69 C, and 0.08 O2, are represented by the solid solution of aluminum in vanadium. The main nitrogen-containing phase is aluminum nitride AlN of a cubic structure. The carbide phase can be identified as V2Al0.9C1.1. Nitride and carbide phases are distributed quite uniformly in the alloy matrix. The carbide phase in the structure of the V-Al-N-C alloy is predominantly in the form of threadlike crystals up to 100 μm in length. The nitride phase is represented by small (up to 10 μm) and large (30 ÷ 10

БЛОКЧЕЙН бИТКОИН: Типология участников

The paper describes the classification and criteria for blockchain environment participants. The overview of the main types of blockchain participants is essential for the understanding of blockchain social and economic behaviour. It structured in the description of the several patterns which is often generated inside the Bitcoin blockchain and the list of the economic entities with the criteria of their behaviour. The paper gives the view on the different types of blockchain entities both from outside and inside the blockchain. Also, the paper lists the possible risks of criminal behaviour corresponding to every entity.El artículo describe la clasificación y los criterios para los participantes del entorno de blockchain. La descripción general de los principales tipos de participantes de blockchain es esencial para la comprensión del comportamiento social y económico de blockchain. Se estructura en la descripción de los diversos patrones que a menudo se generan dentro de la cadena de bloques de Bitcoin y la lista de las entidades económicas con los criterios de su comportamiento. El documento ofrece una vista de los diferentes tipos de entidades de blockchain tanto desde fuera como desde dentro de blockchain. Además, el documento enumera los posibles riesgos de comportamiento criminal que corresponden a cada entidad.В статье описывается классификация и критерии классификации участников блокчейн среды. Обзор основных видов блокчейн участников имеет важное значение для понимания социального и экономического поведения в блокчейн. Статья структурирована как описание нескольких моделей, которые часто возникают внутри блокчейн Биткоин и перечень хозяйствующих субъектов с критериями их поведения. В статье дается представление о различных типах блокчейн структур со взглядом как снаружи, так и внутри блокчейн. Кроме того, в документе перечислены возможные риски преступного поведения, соответствующего каждому объект

Surgical ulcerative gastroduodenal bleeding in patients with pyloroduodenal stenosis

Analysis of surgical treatment of 106 patients with ulcerative gastroduodenal hemorrhage arising in the presence of pyloroduodenal stenosis of varying severity. The patients were divided into 2 groups: 50 people, made a comparison group received traditional surgical treatment, and 56 people. A group of patients who received surgical treatment developed. It is shown that the application of a rational preoperative surgicaltion election tactics and postoperative therapy with the introduction of oxygen-containing solution intraenteric improve treatment outcomes

Successful surgical treatment of massive thrombosis of right parts of the heart in a woman-patient with oncological anamnesis

Successful surgical treatment of massive thrombosis of right parts of the heart in a woman-patient with oncological anamnesi

Reducing the Costs for Consumed Electricity through the Solar Energy Utilization

The priority development direction of the Rostov region as the largest agricultural producer of Russia is the creation of modern, competitive processing industries. Since the beginning of 2015, despite record harvests of cereals, the wheat flour cost has been steadily increasing and now exceeds the peak values for the previous period from 2008 to 2015. This caused by the high share of payment for consumed electricity in the production costs, which is approximately 30%, and significant increase in tariffs for it in the last 10-12 years due to unjustifiably high costs of equipment maintenance and operation in grid companies, liquidation of cross-subsidizing prices, as well as rising gas prices. Under conditions of the existing high solar energy potential in the territory of the South of the country, the implementation of technologies for its transformation into electricity will reduce energy costs and, consequently, reduce the costs of produced goods and services. The purpose of the presented research was to determine the composition and parameters of the equipment of a solar electrical power plant that provides energy to the lighting system of the flour milling section No. 1 and No. 2 of the processing plant Ltd. "Rostovremagroprom" in Zernograd of the Rostov Region, taking into account the assessment of the solar radiation intensity during the year, the structural features of the building roof and features of the company's load graph. Full solar energy potential (1246.87 kWh / m²) is possible to realize at the facility partly due to the existing technical limitations imposed by the building roof construction. The design and implementation of economically feasible additional power supply system for the lighting system of the flour-milling departments of the enterprise excludes the usage of accumulating devices, allowing to reduce the annual costs for the payment of consumed electricity by approximately 45 thousand rubles by decreasing the cost of each one kilowatt-hour of consumed electricity from 8.1 rubles / kWh to 3.6 rubles / kWh during the period of intense activity of the Sun. Keywords: Solar Energy Potential, Inclination Angle of the Receiving Surface, the Layout of the Solar Power Plant JEL Classifications: O13, O44 DOI: https://doi.org/10.32479/ijeep.720

Stroke at a young age: topicality, causes, risk factors,prognosis

The article describes the main alleged causes of stroke at a young age. Possible pathogenetic mechanisms of development associated with etiological factors are presented. Analyzed relevant case histories. The mechanisms of rare syndromes provoking a stroke have been studied. The statistical information on detected cases of stroke at a young age is given.В статье рассмотрены основные предполагаемые причины инсульта в молодом возрасте. Приведены возможные патогенетические механизмы развития, связанные с этиологическими факторами. Проанализированы соответствующие истории болезни. Изучены механизмы редких синдромов, провоцирующих инсульт. Приведена статистическая информация по выявляемым случаям инсультов в молодом возрасте

Dependent coordinates in path integral measure factorization

The transformation of the path integral measure under the reduction procedure in the dynamical systems with a symmetry is considered. The investigation is carried out in the case of the Wiener--type path integrals that are used for description of the diffusion on a smooth compact Riemannian manifold with the given free isometric action of the compact semisimple unimodular Lie group. The transformation of the path integral, which factorizes the path integral measure, is based on the application of the optimal nonlinear filtering equation from the stochastic theory. The integral relation between the kernels of the original and reduced semigroup are obtained.Comment: LaTeX2e, 28 page

In vitro maturation for fertility preservation in patients with cancer: A review

According to the World Health Organization, the number of patients of reproductive age with cancer steadily increases. Therefore, improving their quality of life is one of the priority tasks of the medical community. It is known that more than 30% of women with cancer at the time of diagnosis have not yet given birth. Therefore, one of the relevant issues is developing and improving methods for preserving reproductive function. In vitro oocyte maturation is a promising technique of oncofertility, which is used as an alternative to traditional cycles of ovulation stimulation followed by the production of mature oocytes. This review aims to study the in vitro maturation procedure and analyze the literature data regarding its effectiveness and safety when used as a part of programs for preserving reproductive material in patients with cancer

REMAGNETIZATION PROCESSES IN SINTERED Sm-Co И Nd-Fe-B PERMANENT MAGNETS

The processes of remagnetization in permanent magnets of the Sm2Co17 and Nd2Fe14B systems were studied. The mechanism for the formation of coercivity is established via su-perposition coherent rotation or pinning in accordance of the Kondorski and Stoner-Wohlfarth models.Проект выполнен при финансовой поддержке Российского фонда фундаментальных исследований, грант № 20-32-90211\20