FORMATION OF STRUCTURE AND PROPERTIES IN A TITANIUM ALLOY Ti–3Al–2,5V IN THE PROCESS OF OBTAINING A PIPE BY TREX

The evolution of the structure and properties of the Ti–3Al–2,5V alloy during tube producing by the TREX technology using the methods of optical microscopy, REM, durometry, mechanical compression and tension tests were studied.В работе методами оптической, растровой микроскопии, РСФА, дюрометрии, механических испытаний на сжатие и растяжение изучено изменение структуры и свойств трубной заготовки из сплава Ti–3Al–2,5V на различных этапах получения по технологии TREX.Исследование выполнено за счет гранта Российского научного фонда (проект № 18-79-10107)

New Thermal Insulation Materials from Waste of Mechanical Processing of Wood

The article describes the conditions for obtaining new thermal insulation materials from the waste of mechanical processing of soft hardwood wood. The recommendations for the production of new resource-saving technologies of gypsum-wood and chip-and-glue composites are justified, which makes it possible to dispose of waste from the processing of soft hardwood wood. It was found that the birch pulp extract, along with cellulose and lignin, contains d-erythrosis, which is easily washed out of the wood with water or a solution of "mineralizer" and gets into the cement dough, which leads to a slowdown in hardening and a decrease in compressive strength. It is shown that the existing technological processes for eliminating the negative influence of saccharides on the strength of wood aggregate composites are complex, requiring multi-stage treatment of the aggregate with various chemicals or long-term exposure. A method based on the use of binders that do not interact with extractable substances, such as gypsum or urea-formaldehyde glue, is proposed. By scanning electron microscopy, it was found that the structure of the gypsum-wood composite varies depending on the sequence of input components. The nature of the effect of microcrystalline cotton cellulose on the change in the physical and mechanical properties of the gypsum-particle composite using cavitation-treated sawdust was revealed and its optimal dosage was determined. The regression dependences of the influence of the consumption of wood chips and glue on the compressive strength of the chip-and-glue composite were obtained by the experimental planning method. © 2023 Trans Tech Publications Ltd, Switzerland

Clinical value of ursodeoxycholic acid in treatment of atopic dermatitis of children

Исследовалась эффективность применения урсодезоксихолиевой кислоты в комплексной терапии атопического дерматита у детей. Наиболее эффективным методом отмечена комплексная терапия атопического дерматита с включением препарата «Укрлив».Досліджувалася ефективність вживання урсодеоксихолієвої кислоти в комплексній терапії атопічного дерматиту у дітей. Найбільш ефективним методом відмічена комплексна терапія атопічного дерматиту з включенням препарату »Укрлів».Efficiency of application of ursodeoxycholic acid was investigated in complex therapy of atopic dermatitis of children. The most effective method is the complex therapy of atopic dermatitis with including of preparation »Ukrliv»

Dynamic Formation of a Hot Field Reversed Configuration with Improved Confinement by Supersonic Merging of Two Colliding High-beta Compact Toroids

A hot stable field-reversed configuration (FRC) has been produced in the C-2 experiment by colliding and merging two high-beta plasmoids preformed by the dynamic version of field-reversed theta-pinch technology. The merging process exhibits the highest poloidal flux amplification obtained in a magnetic confinement system (over tenfold increase). Most of the kinetic energy is converted into thermal energy with total temperature (T(i) + T(e)) exceeding 0.5 keV. The final FRC state exhibits a record FRC lifetime with flux confinement approaching classical values. These findings should have significant implications for fusion research and the physics of magnetic reconnection

Formation of a long-lived hot field reversed configuration by dynamically merging two colliding high-beta compact toroids

A high temperature field reversed configuration (FRC) has been produced in the newly built, world's largest compact toroid (CT) facility, C-2, by colliding and merging two high-beta CTs produced using the advanced field-reversed theta-pinch technology. This long-lived, stable merged state exhibits the following key properties: (1) apparent increase in the poloidal flux from the first pass to the final merged state, (2) significantly improved confinement compared to conventional theta-pinch FRCs with flux decay rates approaching classical values in some cases, (3) strong conversion from kinetic energy into thermal energy with total temperature (T(e)+T(i)) exceeding 0.5 keV, predominantly into the ion channel. Detailed modeling using a new 2-D resistive magnetohydrodynamic (MHD) code, LamyRidge, has demonstrated, for the first time, the formation, translation, and merging/reconnection dynamics of such extremely high-beta plasmas. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3574380

Dynamic Formation of a Hot Field Reversed Configuration with Improved Confinement by Supersonic Merging of Two Colliding High-β Compact Toroids

A hot stable field-reversed configuration (FRC) has been produced in the C-2 experiment by colliding and merging two high-beta plasmoids preformed by the dynamic version of field-reversed theta-pinch technology. The merging process exhibits the highest poloidal flux amplification obtained in a magnetic confinement system (over tenfold increase). Most of the kinetic energy is converted into thermal energy with total temperature (T(i) + T(e)) exceeding 0.5 keV. The final FRC state exhibits a record FRC lifetime with flux confinement approaching classical values. These findings should have significant implications for fusion research and the physics of magnetic reconnection