250 research outputs found
Особенности строения биомедицинских сплавов Ti-Nb, полученных электродуговой плавкой и селективным лазерным сплавлением
Выявлено, что при электродуговой плавке и селективном лазерном сплавлении в сплаве Ti-Nb имеет место ликвация компонентов. На участках, обогащенных Nb образуется [beta]-фаза, на участках, обедненных Nb - [alpha]''-фаза. Для устранения неоднородности фазового и элементного состава рекомендуется повысить содержание Nb в сплаве до 45 мас. %
ANTI-CRISIS SOLUTIONS FOR THE DEVELOPMENT OF SMALL AND MEDIUM-SIZED BUSINESSES AS A FACTOR IN IMPROVING THE ECONOMIC SECURITY OF THE STATE
The article presents anti-crisis measures to support small and medium-sized businesses implemented by the Government of the Russian Federation in the COVID-19 pandemic. The paper reviewed also the foreign experience of using measures to support small and medium-sized businesses in the context of the spread of a new coronavirus infection and proposed measures to improve the effectiveness of anti-crisis programs to support small and medium-sized businesses during the spread of coronavirus infection. The authors used in this article the following research methods: analysis and generalization of Russian and foreign anti-crisis measures. The study proposed, based on this analysis, measures to improve the effectiveness of anti-crisis programs to support small and medium-sized businesses during the spread of coronavirus infection in the Russian Federation
The Application of Schematic Compensation Technique for Increasing of Radioelectronic Devices Reliability
The schematic method development of radiation degradation compensation of operating amplifiers’ input currents and offset voltages on basis of radiation-sensitive parameter degradation research of integral microcircuits and discrete transistors is presented and experimentally verified
Efficiency analysis of state support measures for the small and medium-sized business sector in Russia during the pandemic
A comprehensive analysis of legal and economic measures aimed at state support for small and medium-sized businesses during the COVID-19 pandemic is presented, as well as the relevant regulatory legal acts regulating certain aspects of credit anti-crisis support are studied in detail. Conclusions are presented on the state of the small and medium-sized business sector based on statistical data during the crisis period, and specific negative trends associated with the impact of the pandemic are highlighted. The emphasis is made on a detailed study of foreign experience in the field of anti-crisis measures to support small and medium-sized businesses. Within the framework of the article, such scientific research methods as analysis and generalization were used. It was noted, on the one hand, the high efficiency of anti-crisis support programs, on the other, its problems, including limited and insufficient budget funding
Static Solitons of the Sine-Gordon Equation and Equilibrium Vortex Structure in Josephson Junctions
The problem of vortex structure in a single Josephson junction in an external
magnetic field, in the absence of transport currents, is reconsidered from a
new mathematical point of view. In particular, we derive a complete set of
exact analytical solutions representing all the stationary points (minima and
saddle-points) of the relevant Gibbs free-energy functional. The type of these
solutions is determined by explicit evaluation of the second variation of the
Gibbs free-energy functional. The stable (physical) solutions minimizing the
Gibbs free-energy functional form an infinite set and are labelled by a
topological number Nv=0,1,2,... Mathematically, they can be interpreted as
nontrivial ''vacuum'' (Nv=0) and static topological solitons (Nv=1,2,...) of
the sine-Gordon equation for the phase difference in a finite spatial interval:
solutions of this kind were not considered in previous literature. Physically,
they represent the Meissner state (Nv=0) and Josephson vortices (Nv=1,2,...).
Major properties of the new physical solutions are thoroughly discussed. An
exact, closed-form analytical expression for the Gibbs free energy is derived
and analyzed numerically. Unstable (saddle-point) solutions are also classified
and discussed.Comment: 17 pages, 4 Postscript figure
Preparing Students for Engineering Based on the Use of Experimental Tasks in the Process of Learning Physics
В данной статье рассматривается методика подготовки обучающихся к инженерной деятельности на основе использования экспериментальных задач в процессе обучения физике. Описаны необходимые умения будущего инженера и методика их оценки.This article discusses the methodology of preparing students for engineering activities based on the use of experimental problems in the process of teaching physics. The necessary skills of the future engineer and the methodology of their assessment are described
Phase Composition and Microstructure of Ti-Nb Alloy Produced by Selective Laser Melting
The phase composition and microstructure of Ti-Nb alloy produced from composite titanium and niobium powder by selective laser melting (SLM) was studied. Produced monolayered Ti-Nb alloy enhanced the formation of fine-grained and medium-grained zones with homogeneous element composition of 36-38% Nb mass interval. Alloy phase composition responded to [beta]-alloy substrate phase (grain size was 5-7 pm) and non-equilibrium martensite [alpha]"- phase (grain size was 0.1-0.7 [mu]m). [alpha]"-phase grains were found along [beta]-phase grain boundaries and inside grains, including decreased niobium content. Alloy microhardness varied within 4200-5500 MPa
The Role of Apoptosis in the Pathogenic Mechanism of Critical States (Review)
The purpose of the overview is to analyze the role of apoptosis in the pathogenesis of critical illness and discuss specific features of contributed biochemical processes. The paper reviews 117 publications, 76 of which were published during the recent five years. Published data show that the ability to control endogenic apoptotic processes offers opportunities for the development of functional therapy approaches to various diseases
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