Coating synthesis controlled by electron-beam heating

The methods of combined electron-beam treatment of parts made of steel with one- and two-layer coatings are studied experimentally. Ti-Ni, Ni-Al and Al-Ti systems were used as the examples in the experiments. The mathematical model is suggested for coating formation in the controlled regime of high temperature synthesis during high energy source motion along the preliminarily deposited layer of exothermic composition. The study takes into account the difference in thermophysical properties of the materials of coating and substrate, heat release from chemical reaction that leads to the coating properties formation and other factors. The realization of the synthesis depends on technological parameters. Various regimes of the treatment process are investigated numerically

Mathematical modelling of thermal and kinetic phenomena in electron-beam technologies

The article presents a scheme for constructing models using kinetic laws for additional parameters. The work describes the example of the model of electro-beam treatment of a material with a coating. The study uses the simple kinetic law for powder layer evolution due to shrinkage. The model takes into account the melting of powder layer and substrate. The numerical solution gives the temperature field, evolution of the molten pool, the heat affected zone and the surface relief for different moments of time. The results depend on the treatment rate and electron beam energy

Stresses in the material with multilayered coating under impulse thermal loading

The two-dimensional model of mechanical behavior of the specimen with multi layered coating is formulated. The parametric analysis was carried out for various types of boundary conditions. Stress intensity depending on time was studied. The influence of impulse parameters on the temperature and stresses was investigated. It was revealed that radiation heat losses reduces the action of external loading

Experimental study of the influence of pulse electrophoresis of blood plasma 0 (I) on healing of wounds and formation of normotrophic scars in laboratory animals

In experimental study confirmed the acceleration of wound healing and forming normotrophic scars tissue in laboratory animals using the transdermal administration of blood plasma 0 (I) by pulsed electrophoresis under the influence of an external magnetic field. It was established that the method proposed by the authors prevents the development of hypertrophic and keloid scars, and also stimulates tissue regeneration in the surgical area due to the activation of local regeneration processes

Использование Урисана у больных подагрой

Objective: to evaluate the safety, tolerance, and efficacy of the herbal complex Urisan used in patients with gout within the Russian multicenter study. Subjects and methods. Thirty males aged 34 to 56 years with a valid diagnosis of gout after S.L. Wallace and a 1-7-year (mean 4,8 years) history of the disease were examined at the Rheumatology Unit of a Kursk regional hospital. Nineteen and 11 patients were stated to have tophaceous and nontophaceous gout, respectively. The total number of involved joints ranged from 3 to 10 (mean 4,6 joints). The study included patients with interictal gout. All the patients took Urisan in a full dose of 2 capsules (550 mg) twice daily for a month. Results. Prior to Urisan therapy, the mean serum level of uric acid (UA) was 569,5±102,4 ⎧mol/l; daily UA excretion averaged 4769,8 ⎧mol/l. Urisan therapy reduced UA levels by an average of 120 ⎧mol/l and increased daily urinary UA excretion by an average of 198,8 цmol/l. Conclusion. Urisan used against gout for 30 days causes an average 21% reduction in the serum levels of UA and a 4,1% increase in its urinary excretion. There were no exacerbations of gout during Urisan therapy.Цель исследования - оценка в рамках Российского многоцентрового исследования безопасности, переносимости и эффективности применения растительного комплекса Урисан у пациентов с подагрой. Материал и методы. В ревматологическом отделении областной больницы г. Курска обследованы 30 мужчин в возрасте от 34 до 56 лет с достоверным диагнозом подагры по S.L. Wallace и длительностью болезни от 1 года до 7 лет (в среднем - 4,8 года). У 19 пациентов констатирована тофусная подагра, у 11 - бестофусная. Общее количество пораженных суставов колебалось от 3 до 10 (среднем - 4,6 сустава). В исследование включали больных подагрой в межприступный период. Все пациенты принимали Урисан в полной дозе по 2 капсулы (по 550 мг) 2 раза в день в течение месяца. Результаты исследования. Средний уровень мочевой кислоты (МК) в сыворотке крови больных до терапии Урисаном составил 569,5±102,4 мкмоль/л, суточная экскреция МК - в среднем 4769,8 ммоль/л. На фоне терапии Урисаном у больных отмечены снижение уровня МК в среднем на 120 мкмоль/л, а также увеличение уровня экскреции МК с мочой в среднем на 198,8 ммоль/л в сутки. Выводы. Прием Урисана при подагре в течение 30 дней приводит к снижению сывороточного уровня МК в среднем на 21% и увеличению экскреции МК с мочой - на 4,1%. На фоне терапии Урисаном не наблюдалось обострений подагры

Cross-cutting technologies in education

Purpose of the article: analysis of the experience of implementing end-to-end technologies in vocational education. Methodology: the article presents a study aimed at identifying the role of end-to-end technologies in the professional training of students. For this, a survey was conducted among students on the use of end-to-end technologies in the educational process in three age categories (junior, middle, senior). Students had to assess the importance of end-to-end technologies for the implementation of the educational process on a scale from 1 to 4. Results: Students note the significant role of end-to-end technologies in professional activities. This is a promising direction for the development of vocational education

Financial and credit mechanism for attraction of real investments in a system of money flows regulation

Optimization of funding sources of real investments is a key stage in development and successful functioning of enterprises' investment activity. Currently big attention is drawn to questions of state and private partnership during development of investment projects, as well as to possible prospects of development of state and private interaction forms in investment sphere, and concessions particularly. Improvement of forms of interaction between state and corporate sector of economy in the sphere of real investments and as a part of development of specific priority investment programs requiring considerable investments has a strategic federal and regional value. Thus, it is important to understand role and benefit of each participant of the investment market, to define clear statutory, legislative and contractual base, and to swiftly analyze financial efficiency of real investments at all stages of realization. In modern conditions, stable development of economy of any country depends on condition of investment process. Need to integrate finance capital and to promote investment activity is obvious in new management conditions of market relations development. The main condition of successful investment activity at each stage is a choice of effective and correct finance and credit mechanism as a tool of real investments financing. Prior to suggest modern tools of such financing, it is necessary to analyze theoretically proved program and targeted method of real investments financing within the state and private partnership, in order to improve previously examined methodology. © 2015, Mediterranean Center of Social and Educational Research. All rights reserved

Corrosion resistance of neodymium and dysprosium hydrides

This paper describes the methods of obtaining hydrides of rare earth elements such as dysprosium and neodymium. The properties and corrosion resistance of these elements are investigated. A synthesis method of monophasic dysprosium and neodymium dihydrides is presented. Synthesized dihydrides are agglomerates with an average size of 3-50 µm and are formed by crystalline grains of a nanometer size. BET specific surface area, morphology, elemental analyses and composition of samples have been studied. Corrosion stability in aqueous solutions of hydrochloric acid and sodium hydroxide were studied. It was determined that both hydrides undergo hydrolysis in acid and alkaline mediums. Neodymium hydride is more stable to corrosion than dysprosium hydride, which is proved by its longer exposure to aggressive medium to hydrides. The formation of insoluble /poorly soluble products of corrosion can make a significant contribution to the process of powder dissolution