Система найма персонала в ОАО «ЕВРАЗ ЗСМК»

Объем ВКР – 90 с., источников – 40, схем – 1, таблиц – 1, приложений – 3 Ключевые слова: набор, отбор, найм персонала, система, методы. Объект работы: система набора, отбора и найма персонала в организации: ОАО «ЕВРАЗ ЗСМК». Предмет работы: методы отбора персонала. Цель работы: – исследовать систему набора, отбора и найма персонала в организации: ОАО «ЕВРАЗ ЗСМК». Методы: в ходе работы был произведен анализ необходимых теоретических источников, собраны эмпирические данные, систематизированы и синтезированы практические и теоретические материалы. В ходе работы был собран и систематизирован полученный материал по спектру вопросов, касающихся найма персонала.The volume of WRC - 90, sources -. 40, circuits - 1, tables - 1 application - 3 Keywords: recruitment, selection, hiring, system methods. The object of the work: a set of system selection and recruitment of personnel in the organization: JSC "EVRAZ ZSMK". The subject of work: staff selection methods. Objective: - to explore a set of system selection and recruitment of staff in the organization: JSC "EVRAZ ZSMK". Methods: During the work was carried out analysis of the necessary theoretical sources, the empirical data collected, systematized and synthesized practical and theoretical materials. The work has been collected and systematized the material obtained from the spectrum of issues relating to recruitment

Analysis of the low-frequency spectrum of the cubic noncentrosymmetric ferrimagnet Cu2OSeO3

The IR reflectance spectra of the cubic noncentrosymmetric ferrimagnet Cu2OSeO3 (T-C approximate to 60 K) were investigated in the temperature range 10-80 K. Detailed analysis of the symmetry and composition of vibrational modes was conducted on the basis of Raman scattering data and data obtained in this investigation. 68 out of 69 modes consistent with the crystal lattice symmetry were revealed. Some spectral features found in the magnetically ordered phase were studied. The bands at 280 and 421 cm(-1) related to the spectrum of two-magnon light scattering were observed. Dynamic magnetoelectric coupling was found to be responsible for the intensity redistribution in the Raman and IR spectra for the threefold degenerate modes of F-symmetry (modes at 84, 205, and 269 cm(-1)). No change associated with magnetic ordering was observed in the symmetry of the crystal structure. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4723668

The Effectiveness of Retinalamin® Administered by Various Intramuscular Injection Timings in the Treatment of Patients with the Dry Form of Age- Related Macular Degeneration

The paper presents the evaluation of Retinalamin efficacy administered intramuscularly to 90 patients (180 eyes) aged 47 to 75 (averagely, 65.9 ± 7.18 years) with various stages of dry age-related macular degeneration (AMD) once or twice in 6 months. The data of multifocal electroretinography (MfERG) showed that in 80 % of cases of early and intermediate AMD stages, the functional state of the retina improved after a course of Retinalamin, reaching a peak 2 months after the start of treatment. A second course of Retinalamin, given 3 months later, resulted in a more pronounced improvement of the functional parameters, achieving the maximum in the month 5 of the follow-up period. This is confirmed by a change in the P1 component of Mf ERG, which proved to be the most pronounced in the central ring, corresponding to the foveal area. In more than 70 % of cases with atrophic AMD, a positive dynamics of the functional activity of the macula was noted only after a repeated course of intramuscular injections of Retinalamin, whose curative effect reached the maximum in the month 5 of the follow-up. An increase in the density of the P1 component of MfERG was more noticeable in the last two rings, corresponding to the periphery of macula // Russian Ophthalmological Journal, 2016; 1: 39-46

Visual Evoked Potentials of the Retina and Visual Cortex after a Prolonged Exposure to the Radiation of LED Fixtures with Variable Spectral Energy Characteristics

The paper’s objective was to determine the nature of changes in the bioelectric activity of the retina and the visual cortex in conditions of long-term staying of man in an enclosed space with artificial light generated by light-emitting diode (LED) lamps with variable spectral and power characteristics. In addition to a set of standard ophthalmic examinations, we recorded electroretinograms (ERG) to diffuse flashes, pattern-reversing and multifocal stimuli, and visual evoked cortical potentials (VEP) using the diagnostic system RETIport/scan21. The examinations were carried out in four healthy volunteers before and after an 11-day hermetic-chamber experiment simulating conditions of the spacecraft. Prolonged exposure to closed LED lighting created by sources with a high correlated color temperature (CCT), was shown to have no pronounced negative impact on the function of the retina. Changes in the amplitude of the ERG and VEP were minor, but displayed certain features specified by the history of previous injuries or functional disorders. Also, according to VEP waveforms to reversing checkerboard pattern, a characteristic sign of changes in the activity of the visual system in all participants was a splitting of the P100 peak, possibly related to temporal uncoupling of the activity of various visual channels. Thus, artificial LED lighting with high CCT can have both positive and adverse effects on the functional activity of the retina and the visual cortex, the nature of which, apparently, depends on the initial functional state of the visual system // Russian Ophthalmological Journal, 2016; 1: 48-55

Terahertz-infrared spectroscopy of wafer-scale films of single-walled carbon nanotubes treated by plasma

Funding Information: The authors acknowledge Mogorychnaya A.V. for assistance with spectroscopic experiments. The research was supported by the Russian Science Foundation , grant RSF21-72-20050 (spectroscopic measurments and analysis of carbon nanotubes films). D.S.K. and A.G.N. acknowledge Russian Foundation of Basic Research project No. 20-03-00804 (synthesis, characterization and plasma treatment of carbon nanotubes). A.P.T. acknowledges the EDUFI Fellowship (No. TM-19-11079) from the Finnish National Agency for Education and the Magnus Ehrnrooth Foundation (the Finnish Society of Sciences and Letters ) for personal financial support. Publisher Copyright: © 2021 Elsevier LtdWe investigated terahertz-infrared electrodynamic properties of wafer-scale films composed of plasma-treated single-walled carbon nanotubes (SWCNTs) and films comprising SWCNTs grown with different lengths. The spectra of complex conductance of the films were measured at frequencies 5–20 000 cm−1 and in the temperature interval 5–300 K. Terahertz spectral response of films of pristine SWCNTs is well described with the Drude conductivity model and a plasmon resonance located at ≈100 cm−1. Stepwise treatment of the films with oxygen plasma led to a gradual suppression of the Drude spectral weight from the low-frequency side. For films with the nanotubes shorter than 1 μm, i.e., close to electrons mean free path and localization length, scattering of charge carriers at the nanotubes edges is shown to additionally contribute to the carriers scattering rate and to the damping of plasmon resonance. The temperature coefficient of ac resistance (ac TCR) in both kinds of films is found to strongly increase in amplitude during cooling and frequency decrease. The values of ac TCR increase in films with longer time of plasma treatment and nanotubes with shorter length but reach saturation in films with exposure time longer than ≈100 s or composed from SWCNTs shorter than 1 μm.Peer reviewe

Enhancing the thermoelectric performance of single-walled carbon nanotube-conducting polymer nanocomposites

Harnessing energy lost in the form of heat is an important challenge today. Organic thermoelectric materials (TE) can convert lost heat into electricity at relatively low temperature. Single-walled carbon nanotubes (SWCNTs) are known to boost the TE properties of organic-based materials at room temperature (TR). However, the TE performance decreases with the increasing temperature, which restricts the working temperature region of the devices. Here, we present a three steps investigation: initially, the influence of the net of SWCNTs on TE properties of polymer matrix; secondly, creation of hybrid fillers via SWCNTs treatment with gold chloride; lastly, chemical post-treatment of obtained systems in the temperature range 325–410 K. In the process of HAuCl4 aerosolization (gold chloride treatment) on the surface of nanotubes, different ionic conformations (Au and AuCl4−) can be formed. For this reason, we performed a theoretical investigation on the influence of ionic conformations on SWCNTs on the electronic structure. Implementation of SWCNTs net into polymer matrix alongside gold chloride doping and chemical post-treatment successfully increased the power factor of the system in the temperature interval from 300 to 410 K. These results demonstrate the potential of combined approach in creation of hybrid fillers based on organic/inorganic materials with chemical post-treatment in boosting the thermoelectric performance within the whole operating temperature of polymer-based composite alongside the importance of theoretical modeling in tuning the electronic structure of composite systems through a material-by-design approach

Fine-tuning of spark-discharge aerosol CVD reactor for single-walled carbon nanotube growth

We report a development of recently designed apparatus equipped with a spark discharge generator of catalytic nanoparticles for robust aerosol CVD synthesis of single-walled carbon nanotubes. We achieve a profound control over the diameter distribution and the defectiveness of carbon nanotubes produced. By providing a justified comparison of the apparatus with the most abundant aerosol CVD reactor utilizing ferrocene as a catalyst precursor, we reveal the role of the activation procedure: while spark-discharge generator provides aerosol of nanoparticles (ex situ route), the ferrocene vapor decomposes in the nanotube growth zone providing an in situ formation of the catalyst. With other parameters being equal, we reveal the differences in the nanotube growth (diameter and length distribution, yield, defectiveness) employing a comprehensive set of methods (the analysis of differential mobility of the aerosol particles, optical spectroscopy, scanning and transmission electron microscopy, Raman spectroscopy, and atomic force microscopy). We show the ex situ activation in the spark discharge reactor to provide a lower utilization degree of the nanoparticles due to over-coagulation. However, the same method provides an independence of the key performance parameters of the nanotubes opening a room for scaling the apparatus.Peer reviewe