134 research outputs found

    The innovative movements during the great patriotic war (examples from the Ural and the Tyumen industrial enterprises)

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    Статья посвящена проблеме новаторских движений, патриотических починов и других форм социалистического соревнования в годы Великой Отечественной войны на промышленных предприятиях Урала и Западной Сибири. Показана общность интересов и внеэкономические аспекты мотивации к труду работников оборонных предприятий.The article explores the theme of innovative movements during the great patriotic war in the two neighboring industrial regions: Uralsk, and Tyumen. Shows the commonality of interests and non-economic aspects of motivation to work workers of Defense enterprises. First put into scientific circulation several archival so

    Interaction of Citizens with Regulatory Enforcement and Inspection Bodies: Status and Key Trends

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    The objective of the paper is to evaluate the status and trends of citizen interactions with regulatory enforcement and inspection bodies in the framework of inspection reform.The key method used was a representative sociological survey conducted in 35 Russian regions in March 2020. The survey allowed for collecting citizen evaluations on personal experience related to facing 10 major risks to public values (in the areas of personal safety from crime, food and non-food product safety, fire and technical safety of buildings and constructions, environmental safety, risks related to medical services and drugs, transport safety, risks related to financial services and misuse of personal data).The results demonstrate that some 49.5 percent of Russian citizens have faced the need to protect themselves from the above risks for the past 2 years. Out of them, 44.9 percent of respondents applied for protection to regulatory enforcement and inspection authorities. Only 44.2 percent of respondents that had applied to regulatory enforcement and inspection authorities for protection of public values fully attained their objectives (i.e. managed to prevent the threat or have violations eliminated and the damage reimbursed).Comparing these results to those obtained from the previous surveys demonstrates that implementation of the inspection reform has not yet made any significant effect on improving the quality of interaction between citizen and regulatory enforcement and inspection authorities. To improve the quality of such interactions special measures should be undertaken for improving the use of feedback mechanisms for planning inspection activities. Responses to citizen applications should be controlled not only in terms of timeliness but also in terms of substance. Timely review and reaction to citizen applications as well as more involvement in damage reimbursement processes on the part of regulatory enforcement and inspection authorities are also recommended. Broader use of digital technologies for interactions between citizen and regulatory enforcement and inspection authorities could also help improve the quality of these interactions and contribute to increasing the public trust to these authorities

    Modern methods of numerical modeling combustion processes

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    In this abstract, the modern methods of mathematical modeling of turbulent combustion processes for combustion chambers of gas turbine units. The mathematical conditions and limitations of methods based on the solution of the Navier-Stokes system of equations are determined. The most effective modeling systems are compared, their mathematical foundations are considered, the applicability limits are determined, and the advantages and disadvantages for calculating real combustion chambers are determined.В данной работе выполнен обзор современных методов математического моделирования турбулентных процессов горения для камер сгорания газотурбинных установок (КС ГТУ). Определены математические условия и ограничения методов, основанных на решении системы уравнений Навье-Стокса. Проведено сравнение наиболее эффективных систем моделирования, рассмотрены их математические основы, приведены границы применимости, а также преимущества и недостатки для расчета реальных КС

    Domain structure and grain orientation in PLZT ceramics using electron backscatter diffraction and piezoresponse force microscopy

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    The equipment of the Ural Center for Shared Use “Modern nanotechnology” UrFU was used. The research was made possible by Russian Foundation of Basic Research (Grant 16-02-00821-а)

    IoT based system for real-time monitoring the hydrogen-ion activity in water bodies

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    The paper presents design and principle of operation of a mobile combined pH meter. Sensor’s network underlying the IoT system for monitoring water bodies hydrogen ions activity in real time was demonstrated. The measuring device was tested on liquids with different pH levels. The obtained measurement results were compared using a stationary pH meter OHAUS Starter 3100

    Diffuse Neuroendocrine System: Structural and Functional Effects of Radiation Injury to Amine Precursor Uptake and Decarboxylation (APUD) Cells

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    The paper presents a review of the results obtained by the authors on the study of external (gamma) and internal (I-131) radiation effects on the functional morphology and linkage of the diffuse neuroendocrine system (DNES) and amine precursor uptake and decarboxylation (APUD) cells of the stomach and duodenum. The investigations performed enabled us to determine that the morphological changes noted in APUD cells had a dose and time dependency. The present study supports the point of view that the radiation initiates serotonin release from APUD cells, which appears to initiate the mechanism of early postirradiation dysfunctions of the gastrointestinal tract and the subsequent adaptive response of DNES. Analysis of our results, together with a review of the literature, indicates that APUD cells actively participate both in pathogenesis of radiation injury and development of organ and tissue radiosensitivity

    Immunohistochemical Markers in the Assessment of Tumor Response

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    The examination of the possibility of using immunohistochemical and molecular (NCRT) and prognostic factors of the disease state. The study included 21 patients with locally advanced gastric cancer. All patients underwent the NCRT followed by gastrectomy D2. We analyzed the expression of HER2 / neu marker, Ki-67, p53, Cyklin D1, E-cadherin in biopsy (before therapy) and the operating material (after chemoradiotherapy and the treatment gap). We have found statistically significant decrease in the expression of Ki-67 markers and Cyklin D1, a trend towards to a decrease of p53 expression after the NCRT. The dynamics of expression of immunohistochemical markers examination is a promising approach in search for predictors of NCRT effectiveness for patients with locally advanced gastric cancer. Keywords: neoadjuvant chemoradiotherapy, immunohistochemical markers, molecular genetic markers, therapeutic pathomorphism, gastric cancer

    Study of structure-property relationship in steels based on analysis of EBSD data

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    In this work, we formulate novel data-driven assays for exploring the structure-property linkages for high-manganese austenitic wear-resistant steel 110G13L (Hadfield steel). Steel 110G13L has the following chemical composition, wt.%: C(0.95-1.50)-Mn(11.5-15.0). These assays are built on recent advances in high resolution quantification of material structure using correlations and principal analyses of electron backscatter diffraction (EBSD) data, as well as in the mechanical characterization using nanoindentation. These novel protocols are demonstrated on a steel 110G13L that exhibits various polycrystalline microstructures. A comparative analysis of EBSD data was carried out for samples of manganese steel 110G13L obtained by various methods. Analysis of the diffraction patterns of backscattered electrons allowed us to plot orientation maps, Schmid factor maps and distributions for austenite dendrites. Schmid factor maps are used to determine the degree of homogeneity of a possible deformation. The results of the measurement of hardness and Young's modulus for the austenite dendrites indicate the heterogeneity of the mechanical properties of the material in submicro-volumes due to lattice defects (dislocations) inside the crystallites. © Published under licence by IOP Publishing Ltd.Russian Foundation for Basic Research, RFBR: 19-33-90198The equipment of the Ural Centre for Shared Use “Modern nanotechnology” UrFU was used. The reported study was funded by RFBR (project No. 19-33-90198)

    Mechanical and piezoelectric properties of pure and modified microtubes of diphenylalanine

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    The research was carried out using equipment of Ural Center for Shared Use "Modern Nanotechnologies" Ural Federal University with the financial support by the grant of the President of the Russian Federation for young scientists (Contract 14.Y30.17.2294-MK) and the Government of the Russian Federation (Resolution 211, Contract 02.A03.21.0006). Part of this work was developed in the scope of project CICECO-Aveiro Institute of Materials (ref FCT UID/CTM/50011/2013), financed by national funds through the FCT/MEC and, when applicable, cofinanced by FEDER under the PT2020 Partnership

    As-Grown Domain Structure in Calcium Orthovanadate Crystals

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    An as-grown domain structure in nominally pure and Mn-doped calcium orthovanadate (CVO) crystals was studied by several methods of domain imaging: optical microscopy, piezoelectric force microscopy, and Cherenkov-type second harmonic generation. The combination of imaging methods provided an opportunity for comprehensive study of the domain structure on the polar surface and in the bulk of the samples. It was shown that, in nominally pure CVO crystals, an irregular 3D maze of rounded domains, with charged walls, essentially tilted from the polar direction, was present. It was proposed that the domain structure was formed just below the phase transition temperature and persisted during subsequent cooling. Such behavior is due to effective bulk screening of the depolarization field and a low value of the pyroelectric field which appears during cooling. The revealed formation of triangular domains and flat fragments of domain walls in Mn-doped CVO was attributed to polarization reversal under the action of the polar component of the pyroelectric field, above the threshold value for domain switching. This fact represents the first observation of the domain switching in CVO crystals. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.Funding: This research was funded by the Russian Foundation for Basic Research, grant number 20-02-00588-a, and the Ministry of Science and Higher Education of the Russian Federation, grant numbers 075-15-2021-677 and FEUZ-2020-0054
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