Polycystic ovary syndrome and periodontal status: a literature review

The review considers the problem of connection the polycystic ovarian syndrome and periodontal disorders of the fertile women. The authors marked that this problem is not virtually touched upon in Russian science. In the foreign literature this issue is discussed in connection with studying the micro-biome and oxidative stress. The authors refer to some articles showing that the quantity of pathogenic microorganisms responsible for periodontal disorders and the level of specific antibodies in blood serum are increased in women with polycystic ovarian syndrome, especially in the cases of gum inflammation. Also the article gives the data where the results show the wider spreading of periodontal disorders in women with polycystic ovarian syndrome in comparison with the healthy ones where controls were matched by age and BMI. The authors think that studies on oral microbiocenose disorders and tissue quality of periodontium of the fertile women with polycystic ovarian syndrome are quite important. The further studying of connection of polycystic ovarian syndrome and oral mucous membrane inflammation could reveal definite periodontal pathogens, which can influence systematic inflammation processes in polycystic ovarian syndrome

ENSURING PERSONNEL INVOLVEMENT IN COMPANIES’ SUSTAINABLE DEVELOPMENT

At the present stage of development of society and economy, there is a reassessment of values and guidelines in the field of management. The main resource for the life and development of the company is a person. Every company leader dreams of engaged employees, working harder and better, taking initiative, and high productivity. Engagement is a behavior in which the employee is fully emotionally and intellectually involved in a certain activity, wants to make additional effort. One of the key topics that a modern company leader is interested in is creating a special organizational environment in which people work consciously, look for ways to improve, put their knowledge at the service of the business and take on more responsibility. Therefore, it is very important to focus on the internal environment in which employees interact with each other.The article examines the relationship between staff involvement and sustainable development of the company. Highly engaged companies have the best financial performance in their industry. The main sources of engagement at the moment are research by consulting companies and, to a lesser extent, practice-oriented publications. The paper analyzes the proposed approaches to increase employee engagement and proposes a comprehensive method for managing employee engagement. The purpose of the study is to determine the optimal approach to personnel engagement management.The objectives of the research are reduced to the description of the method (PDCA), which includes a description of the approach for taking measurements, filling in the incoming questionnaire blocks, taking into account the current situation and the company's strategy, an algorithm for working with the results obtained and examples of practices to increase engagement.The results of the study are the content of key blocks of assessment, analytical tools for assessing involvement, an algorithm for working with assessment results to make a decision to increase involvement

ОБЕСПЕЧЕНИЕ ВОВЛЕЧЕННОСТИ ПЕРСОНАЛА В УСТОЙЧИВОЕ РАЗВИТИЕ КОМПАНИИ

At the present stage of development of society and economy, there is a reassessment of values and guidelines in the field of management. The main resource for the life and development of the company is a person. Every company leader dreams of engaged employees, working harder and better, taking initiative, and high productivity. Engagement is a behavior in which the employee is fully emotionally and intellectually involved in a certain activity, wants to make additional effort. One of the key topics that a modern company leader is interested in is creating a special organizational environment in which people work consciously, look for ways to improve, put their knowledge at the service of the business and take on more responsibility. Therefore, it is very important to focus on the internal environment in which employees interact with each other.The article examines the relationship between staff involvement and sustainable development of the company. Highly engaged companies have the best financial performance in their industry. The main sources of engagement at the moment are research by consulting companies and, to a lesser extent, practice-oriented publications. The paper analyzes the proposed approaches to increase employee engagement and proposes a comprehensive method for managing employee engagement. The purpose of the study is to determine the optimal approach to personnel engagement management.The objectives of the research are reduced to the description of the method (PDCA), which includes a description of the approach for taking measurements, filling in the incoming questionnaire blocks, taking into account the current situation and the company's strategy, an algorithm for working with the results obtained and examples of practices to increase engagement.The results of the study are the content of key blocks of assessment, analytical tools for assessing involvement, an algorithm for working with assessment results to make a decision to increase involvement.На современном этапе развития общества и экономики идет переоценка ценностей и ориентиров в области управления. Основным ресурсом для жизни и развития компании выступает человек. Каждый руководитель компании мечтает о вовлеченных сотрудниках, работающих больше и лучше, проявляющих инициативу, с высокой производительностью труда. Вовлеченность – поведение, в ходе которого работник полностью эмоционально и интеллектуально вовлечен в определенную деятельность, хочет сделать дополнительное усилие. Одна из ключевых тем, которой интересуется современный руководитель компании, – это создание особой организационной среды, когда люди работают сознательно, ищут пути усовершенствования, ставят на службу делу свои знания и берут на себя больше ответственности. Поэтому очень важно делать акцент на внутренней среде, в которой взаимодействуют между собой сотрудники.В статье рассматривается связь вовлеченности персонала с устойчивым развитием компании. Компании с высоким уровнем вовлеченности демонстрируют лучшие финансовые показатели в своей отрасли. Основными источниками по вовлеченности в настоящий момент являются исследования консалтинговых компаний и в меньшей степени – практикоориентированные издания. В работе проведен анализ предлагаемых подходов по повышению вовлеченности сотрудников и предложен комплексный метод управления вовлеченностью в компании. Цель исследования состоит в определении оптимального подхода к управлению вовлеченностью персонала.Задачи исследования сводятся к представлению метода (PDCA), в который входит описание подхода проведения замера, наполнение входящих блоков анкеты с учетом текущей ситуации и стратегии компании, алгоритм работы с полученными результатами и примеры практик по повышению вовлеченности.Результатами исследования являются содержание ключевых блоков оценки, аналитические инструменты оценки вовлеченности, алгоритм работы с результатами оценки для принятия решения по повышению вовлеченности

Strain-Rate Dependency of a Unidirectional Filament Wound Composite under Compression

This article presents the results of experimental studies concerning the dynamic deformation and failure of a unidirectional carbon fiber reinforced plastic (T700/LY113) under compression. The test samples were manufactured through the filament winding of flat plates. To establish the strain rate dependencies of the strength and elastic modulus of the material, dynamic tests were carried out using a drop tower, the Split Hopkinson Pressure Bar method, and standard static tests. The samples were loaded both along and perpendicular to the direction of the reinforcing fiber. The applicability of the obtained samples for static and dynamic tests was confirmed through finite element modeling and the high-speed imaging of the deformation and failure of samples during testing. As a result of the conducted experimental studies, static and dynamic stress-strain curves, time dependencies of deformation and the stress and strain rates of the samples during compression were obtained. Based on these results, the strain rate dependencies of the strength and elasticity modulus in the strain rate range of 0.001–600 1/s are constructed. It is shown that the strain rate significantly affects the strength and deformation characteristics of the unidirectional carbon fiber composites under compression. An increase in the strain rate by 5 orders of magnitude increased the strength and elastic modulus along the fiber direction by 42% and 50%, respectively. Perpendicular loading resulted in a strength and elastic modulus increase by 58% and 50%, respectively. The average strength along the fibers at the largest studied strain rate was about 1000 MPa. The obtained results can be used to design structural elements made of polymer composite materials operating under dynamic shock loads, as well as to build models of mechanical behavior and failure criteria of such materials, taking into account the strain rate effects

Experimental analysis of wear resistance of compacts of fine-dispersed iron powder and tungsten monocarbide nanopowder produced by impulse pressing

The paper presents the results of studying the structure and wear resistance of compacts produced from fine dispersed reduced iron powder (average particle size 3–5μm) with the addition of tungsten carbide (WC) nanopowder with the average particle size of 25–30 nm. The mass fraction of tungsten carbide (wolfram carbide) in the powder composition was 5% and 10% of the total mass. Impulse pressing was conducted using the modified Kolsky method at compacting temperatures of 20 °C to 300 °C. The produced compacts had relative density of over 90%. Metallographic studies using the scanning electronic microscopy method on a TESCAN VEGA II electronic microscope have shown that the produced compacts have a fairly homogeneous fine-grained structure, with a uniform pattern of pore distribution, the form of the pores being close to spherical. X-ray microanalysis using an INCA Energy 250 energy-dispersion spectrometer with scanning along the surface line and transversal laps testifies to the fact that, in the considered temperature range, dynamic compaction does not lead to any noticeable changes in the distribution of the Fe, W and C elements over the bulk of the specimens. The conducted measurements of micro-hardness of the compacts have shown that it increases considerably with the pressing temperature. The produced compacts were tested for wear resistance in a dry friction regime, using the ‘rotating disk – stationary specimen’ configuration. Mass loss of the compacts as a function of testing time is presented. Wear resistance of compacts depends on pressing temperature and concentration of the WC powder in the matrix of reduced iron. It has been experimentally determined that maximal wear resistance is observed in the compacts with the mass fraction of WC equal to 10%, produced at a pressing temperature of 300 °C

Mechanical Response Change in Fine Grain Concrete Under High Strain and Stress Rates

International audienceExperimental results on assessing the effects of strain and stress rates on the behavior of fine-grain concretes are presented. Specimens of fine-grain and fiberreinforced concretes were dynamically tested using the Kolsky method and its modification, the “Brazilian test”. As a result of the experiments, values of the Dynamic Increase Factor (DIF) were determined for both the materials studied. Their curves as a function of strain and stress rates were constructed. The experimental data is compared with the theoretically obtained values of DIF as a function of strain rate available in the literatur