The Impact of the COVID-19 Pandemic on Regional Labor Markets in Ukraine

In March 2019, the World Health Organization (WHO) announced the global outbreak of COVID-19 to be a pandemic. The probable source of the virus was Wuhan (China), from where it quickly spread all over the world. Experts say that from the start of the pandemic in Ukraine and to the second quarter of 2022, 5.04 million cases of infection were recorded. The fraction of people who have received at least one dose of the COVID-19 vaccine is 36.4%, making Ukraine the least vaccinated country in Europe. High morbidity rate made it necessary to introduce quarantine measures that have negatively affected the socio-economic development of Ukraine as a whole, and regional labor markets, in particular. The article is aimed at assessing the impact of the coronavirus pandemic on regional labor markets in Ukraine. To achieve this aim, the following tasks were solved: a) to analyze the COVID-19 dynamics as for Ukraine’s regions, taking into account the aggravation of the humanitarian crisis; b) to identify the situation in regional labor markets by economic activity indicators; c) to analyze state regulation as for its compliance with the state social guarantees in labor relations. It has been determined that the most negative situation with the COVID-19 epidemic is present in the regions with the largest cities of the country (which are home to a population of 1,029,049 to 2,611,327 people). It proves that a particularly negative impact of the pandemic was made on the regional labor markets with high economic activity and strong economic potential. It is established that the pandemic has led to employment reduction in all the regions, which went hand in hand with the increase in informal employment of economically active population. Rising unemployment and wage arrears are also signs of the negative impact of the COVID-19 pandemic on Ukraine’s regional labor markets. It can be concluded that the key problems requiring managerial decisions are those connected with inclusive economic recovery after COVID-19 and the fulfillment of state social guarantees in the labor market in almost every region in Ukraine, given the impact of the ongoing military conflict and the need for economic recovery after it

Increase in efficiency of hydrogen production by optimization of food waste fermentation parameters

The aim of the work was to optimize the ratio of weight of solid (food waste) and liquid (water) phases in order to ensure high efficiency of molecular hydrogen synthesis and degradation of multi-component food waste. Assessment of the efficiency of fermentation process was carried out using colorimetric and potentiometric methods for pH and redox potential measuring, volumetric and chromatographic methods for volume and composition of gas investigation, and mathematical calculations for fermentation parameters determination. The dynamics of hydrogen fermentation of waste in the horizontal reactor using different ratios of solid (food waste) and liquid (water) phases was investigated. The optimization of the ratio of solid and liquid phases was shown to lead to the increase in efficiency of molecular hydrogen synthesis and destruction of waste particles. The ratio of solid and liquid phases 1:3 was determined to be optimal for the effective synthesis of hydrogen as well as for maximum waste decomposition. It provided effective hydrogen fermentation of multi-component food waste and allowed to rationally use material and technical resources. Obtained results are promising for further development of efficient industrial biotechnologies for waste destruction with the simultaneous synthesis of environmentally friendly energy carrier, i.e. molecular hydrogen

Draft Genome Sequences of Six Strains Isolated From the Rhizosphere of Wheat Grown In Cadmium-Contaminated Soil

This study presents high-quality draft genome assemblies of six bacterial strains isolated from the roots of wheat grown in soil contaminated with cadmium. The results of this study will help to elucidate at the molecular level how heavy metals affect interactions between beneficial rhizobacteria and crop plants

Formation of Research Skills in Extracurricular Activities

Данная статья посвящена разработки модульного исследовательского кружка, как один из форм организации внеурочной деятельности обучающихся, направленный на формирование исследовательских умений. Особенностью исследовательского кружка является объединение 5-10 классов по модулям, включающее детей в самостоятельный творческий, исследовательский поиск. Делается вывод, что исследовательская деятельность может содействовать успешной социализации ребенка и, в частности, повышению его статуса среди сверстников.This article is devoted to the development of a modular research circle, as one of the forms of organization of extracurricular activities of students, aimed at the formation of research skills. The peculiarity of the research circle is the Association of 5-10 classes in modules, including children in an independent creative, research search. It is concluded that research activities can contribute to the successful socialization of the child and, in particular, improve its status among peers

Methodological Tools for Investment Risk Assessment for the Companies of Real Economy Sector

Methodological approaches to investing in companies and reducing the negative impact of risks that are formed at the macro and micro levels are considered in the article. The algorithm for expressing investment risks through related risks and conducting an investment risk assessment as a group process is defined. It has been determined that the defining features of investment risks are the environment, duration, and scope of the project, risk position, profile, risk appetite, consequences, capacity, and results of the impact on the investment project. An investment risk accounting system is formed, which is represented by a set of organized structural elements that perform functions related to planning and implementation of a set of measures that identify, assess, monitor, and control risks to minimize negative consequences and enhance opportunities. A method of forming a real portfolio of investment projects considering the dynamic risk factor has been developed

Increase in efficiency of hydrogen production by optimization of food waste fermentation parameters

The aim of the work was to optimize the ratio of weight of solid (food waste) and liquid (water) phases in order to ensure high efficiency of molecular hydrogen synthesis and degradation of multi-component food waste. Assessment of the efficiency of fermentation process was carried out using colorimetric and potentiometric methods for pH and redox potential measuring, volumetric and chromatographic methods for volume and composition of gas investigation, and mathematical calculations for fermentation parameters determination. The dynamics of hydrogen fermentation of waste in the horizontal reactor using different ratios of solid (food waste) and liquid (water) phases was investigated. The optimization of the ratio of solid and liquid phases was shown to lead to the increase in efficiency of molecular hydrogen synthesis and destruction of waste particles. The ratio of solid and liquid phases 1:3 was determined to be optimal for the effective synthesis of hydrogen as well as for maximum waste decomposition. It provided effective hydrogen fermentation of multi-component food waste and allowed to rationally use material and technical resources. Obtained results are promising for further development of efficient industrial biotechnologies for waste destruction with the simultaneous synthesis of environmentally friendly energy carrier, i.e. molecular hydrogen