Kharkiv Region Research Articles

Kharkiv Okruha in the 1920s: Number and Ethnic Composition of the Population

The ethno-cultural environment of Ukraine, in particular the ethnic structure of the population and its territorial features, is an important topic of Ukrainian ethnology. The materials of censuses are the main sources for studies of the ethnic composition. The results of the 1926 census, the publication of which has been the most complete, are of unique importance for conducting such scientific research. The population of not only areas, towns, districts, but also every rural settlement without exception, as well as the ethnic composition of the population of each village council, has been promulgated. There is currently no separate investigation devoted to the study of the population and ethnic composition of the population of Kharkiv Okruha as a whole, its urban and rural population. The author’s tables have been prepared based on the processing of statistical materials of the 1926 census. In 1926 Ukrainians have constituted an absolute majority in the ethnic population of the Kharkiv Okruha as a whole, among the urban and rural population, among the population of 24 out of 27 districts, as well as among the population of 348 out of 411 village councils. In 1926 most of the territories of Kharkiv region have been characterized by the dominance of Ukrainians in terms of number and ethnic homogeneity of the population with a minimal territorial representation of scattered ethnic minorities. The level of the share of Russians and Jews among the entire population of Kharkiv is noticeable, but the majority of them are migrants. Russians have made up the majority of the population in 3 districts of the okruha. The territories of the former Kharkiv Okruha in the borderlines of 1926 now belong not only to Kharkiv Oblast (established in 1932), but also to Sumy Oblast (founded in 1939). The territory of 12 districts of the former Kharkiv Okruha has been under Russian occupation completely or partially from the end of February to the beginning of September, 2022 and suffered significant human losses and material damage from Russian aggression.

Rare, protected, and understudied vascular plant species of the pinewood complex of the Mozh River valley (Kharkiv Region, Ukraine)

The composition of the biota is dynamic and changes for many reasons, making biodiversity research relevant. Studies of rare species that are most vulnerable to anthropogenic pressures are of particular importance. Although the Mozh River flows through the central part of the Kharkiv Region, its valley remains understudied, especially the pine forests and their rare plants. The results of the current study include data from our field research, revision of the Herbarium of V.N. Karazin Kharkiv National University (CWU), and literature sources from the second half of the 20th century to the present. This paper contains an annotated list of 35 species of vascular plants. Each species is provided with the data on its geographical range, distribution in Ukraine, population status and its study history in the Kharkiv Region, conservation status, and the state of its population in the studied forests. We found the localities of two species included in Appendix I of the Bern Convention (Salvinia natans (L.) All. and Jurinea cyanoides (L.) Rchb. and six species included in the Red Data Book of Ukraine (Botrychium lunaria (L.) Sw., Pulsatilla pratensis (L.) Mill., Iris pineticola Klok., Neottia nidus-avis (L.) Rich., Neottia ovata (L.) Hartm., Tulipa quercetorum Klok. & Zoz). We also found 19 species rare in the Kharkiv Region (Lycopodium clavatum L., Athyrium filix-femina (L.) Roth, Ophioglossum vulgatum L., Campanula persicifolia L., Chimaphila umbellata (L.) W.P.C. Barton, Comarum palustre L., Hottonia palustris L., Rubus saxatilis L., Carex pseudocyperus L., etc.). Nine regionally rare plant species have the boreal range type; they occur at the southern limit of their distribution range which indicates the specificity of ecological and climatic conditions formed in the pine forests in the Mozh River valley. In addition, we found five species without conservation status, but they are rare in the region (Caltha palustris L., Catolobus pendulus (L.) Al-Shehbaz, Gratiola officinalis L., Lythrum hyssopifolia L., Rubus polonicus Barr. ex Weston), and, therefore, they are recommended to be included in the next edition of the Official List of the Regionally Rare Plants of the Kharkiv Region. Three species (Buglossoides czernjajevii (Klokov & Des.-Shost.) Czerep., Jacobaea andrzejowskyi (Tzvelev) B.Nord. & Greuter, Sedum album L.) were identified as understudied in the Kharkiv region due to the lack of or insufficient information on their distribution in the study area.

Fritillaria meleagris L. (Liliaceae) in the Kharkiv Region: ecological preferences, conservation problems

Fritillaria meleagris L. is a рalearctic species with a disjunct distribution. It is protected at the national level in Ukraine, listed as "vulnerable" in the Red Data Book. Most of the data on the species distribution, as well as on the status and stability of its populations, have been obtained for the Carpathian region. Much less information is available for F. meleagris in the Forest Steppe, especially for its left-bank part. The article presents the results of the study of the peculiarities of F. meleagris distribution in the Kharkiv Region and provides information on the structure of coenopopulations and their ecological and coenotic preferences. Problems and prospects for this species conservation are also considered. The studies cover the biotopes of the Merla River valley and its tributary, the Merchyk River (the Dnipro River basin) in an area of more than 35 square km. In the Kharkiv Region, the F. meleagris coenopopulations were found mainly in grass-type biotopes. These are usually secondary post-forest meadows of the Molinio-Arrhenatheretea Tx. 1937 class. Only one coenopopulation is located in a tree-type biotope (mixed floodplain forest with Quercus robur L., Ulmus laevis Pall., Alnus glutinosa (L.) Gaertn., Salix alba L., Padus avium Mill., Populus аlba L., P. deltoides Marshall, P. tremula L., Acer negundo L., А. tataricum L., A. campestris L., without a pronounced dominant). The specificity of the ecological regimes of the studied localities of F. meleagris has been clarified by the phytoindication method. As a rule, they are damp (less often, fresh) forest-meadow habitats with full, but uneven (temporarily excessive) wetting of the root layer of the soil. The soils are moderately aerated, weakly acidic (pH 5.5–6.5), enriched with salts, but with insignificant carbonate content, and often relatively poor in terms of mineral nitrogen. The climate is characterized by submicrothermal conditions with signs of subaridity and subcontinentality. We have not detected any significant variability of conditions (both edaphic and climatic) in the studied localities. They are more or less optimal for the existence of F. meleagris. In all the F. meleagris localities studied, the change in the hydrological regime due to the reclamation of floodplain remains a risk factor but does not pose an immediate threat. The existence of forest coenopopulations in glades is threatened by overgrowth of trees and shrubs (the invasion of Populus tremula and Acer negundo is particularly dangerous). The decrease in the number of meadow coenopopulations is a result of plowing and burning. Currently, in the Kharkiv Region, F. meleagris is protected in Slobozhanskyі National Nature Park (1 locality) and in Kapranskyі Botanical Reserve of local importance (11 localities). Monitoring of the existing localities outside the protected areas and their inclusion into the expansion zone of the Slobozhanskyі National Nature Park is an important condition for their preservation.

Development of industrial technology of plant substance of viburnum opulus fruit liquid extract

Nowadays, the development of domestic herbal medicines for the treatment of diseases of the cardiovascular system remains one of the current problems in the health care system of Ukraine. Some types of plant raw materials that can be successfully used in the complex therapy of cardiovascular diseases include viburnum fruits (Viburnum opulus L.). Pharmacological activity, the antimicrobial, antioxidant and cardioprotective properties of the extract developed on their basis from the fruits of the viburnum opulus fruit liquid extract (VOFLE) have studied by preclinical in vitro researches.
 The aim of the work was the development of industrial technology of the domestic plant substance Viburnum opulus fruit liquid extract (VOFLE) for the purpose of it further introduction into the tablet dosage form.
 Experimental samples of viburnum opulus fruits of domestic origin were used as object of research, harvested in the experimental fields of the Institute of Vegetable and Melon growing of the National Academy of Agrarian Sciences of Ukraine (Kharkiv region) to obtain the plant substance VOFLE. Physicochemical and pharmacotechnological methods of research have been used in our work.
 As a result of physical, chemical and pharmacotechnological researches, a domestic plant substance – Viburnum opulus fruit liquid extract (VOFLE) has been developed and standardized by extracting viburnum fruits (Viburni opuli fructus) by water-ethanol mixture 50% at the general ratio of raw material: extractant – 1:10, the analysis of each production stage of the technological process was carried out in order to establish the main technological parameters that are subjected to monitoring during the introduction of plant substances in industrial production and during the validation of the technological process.
 The technology of the domestic herbal substance viburnum opulus fruit liquid extract (VOFLE) obtaining was theoretically justified and experimentally developed with the aim of its further introduction into a tablet medicinal form of cardioprotective and membrane-stabilizing activity. A technological block diagram was developed with the definition of its main critical stages of the production process of the herbal substance, as well as a production equipment scheme, which was tested in industrial conditions of the LLC «Pharmaceutical Company "Zdorovya"», Kharkiv.

O. Mishchenko’s button accordion school in metaphors and realities of creative and pedagogical process

O. Mishchenko’s button accordion school in metaphors and realities of creative and pedagogical process

Dynamics of the microorganisms’ number in the soil mass of podzolized chernozem after treatment with fungicides of various origins

In a laboratory model experiment, the dynamics of the number of bacteria and micromycetes in the soil mass of podzolized chernozem after a one-time treatment of its surface with fungicides of various origins investigated. Chemical fungicides based on the active substances carbendazim, tebuconazole and azoxystrobin, and biological fungicides based on the antagonistic fungi Trichoderma viride (lignorum) and Chaetomium cohliodes were used. The soil mass for the experiment was taken from the arable layer of the soil on the site without fertilizers in the field experiment of the Department of Agrochemistry NSC "Institute for Soil Science and Agrochemistry Research named after O. N. Sokolovsky" (NSC "ISSAR") on the territory of SE "EF Hrakivske" (Noviy Korotych village, Kharkiv district, Kharkiv region). During 110 days of composting at a constant temperature, changes in the state of microbial communities, in particular soil micromycetes, and the speed and completeness of their recovery compared to soil not treated with fungicides evaluated. The state of the microflora was monitored four times during the study period according to the parameters of the number of microorganisms belonging to various ecological-trophic and taxonomic groups, the total biological index (TBI) and indicators reflecting the functional state of microbial coenoses (oligotrophy and mineralization indices, the coefficient of microbial transformation of soil organic matter (MTSOM). On the fifth day after treatment with fungicides, the number of bacteria and micromycetes in the samples of the treated soil mass was slightly higher higher than in the control samples, and on the twentieth day, on the contrary, it was significantly lower. The number of bacteria was lower by 20-46 %, micromycetes by 16-34 % compared to the control. On the fortieth day, a partial restoration of the number of bacteria to the level of the untreated control soil observed, and the number of micromycetes remained lower by 9-36 % compared to the control in the case of chemical fungicides. When using biological fungicides, the number of micromycetes approached the values in control soil and accounted for 84-94 % of them. On the one hundred and tenth day, the number of microflora in the soil treated with chemical fungicides according to TBI was 79-89 % of the control values, and in the soil treated with biofungicides it was 102-104 %. The number of micromycetes decreased to a lesser extent and recovered most completely and quickly in the case of the application of the biological fungicide Hetomic. Given the important role of soil micromycetes in the functioning of soils, a decrease in their number due to the accumulation of residual amounts of chemical fungicides in the soil can have a negative impact on many soil-biological processes, in particular the decomposition of plant residues and further transformation of organic matter, as well as on the phytosanitary state of the soil. Therefore, in order to avoid the possible consequences of their excessive or repeated application and the associated threat of soil contamination, it is necessary to carry out microbiological monitoring of soils in areas with a high fungicide load.

Spiders (Araneae) of the oak forests of Kharkiv Region (Northeastern Ukraine)

Spiders (Araneae) of the oak forests of Kharkiv Region (Northeastern Ukraine)

Evaluation of pheromone traps for bark beetles and their predators in pine forests in the Kharkiv region

Introduction
 Pine stands of many regions have been affected by outbreaks of bark beetles with the dominance of Ips acuminatus (Gyllenhal, 1827) and Ips sexdentatus (B?rner, 1776). In many countries, pheromone traps are produced and used to monitor and suppress native and alien bark beetles. In Ukraine, pheromone traps for catching bark beetles are not produced. The effectiveness of various trap designs and the number of lures for pine bark beetles have not been previously studied in Ukraine. In 2023, within the framework of the FAO project TCP/RER/3801, State Specialized Forest Protection Enterprise ‘Kharkivlisozahyst’ received three types of pheromone traps produced by the Spanish company Sanidad agricola econex s.l. and pheromones intended for the capture of I. acuminatus and I. sexdentatus.
 The study aimed to compare the species composition and abundance of bark beetles and their predators by captures in the different pheromone trap-lure combinations.
 Materials and Methods
 The research was carried out in June – August 2023 in pure mature pine stands in the Vasishcheve subunit (State Specialized Forest Enterprise “Forests of Ukraine”, Branch “Zhovtneve Forestry”). Three types of pheromone traps were placed randomly in six locations of a homogeneous stand, the distance between which was about 50 meters. Type A traps (Funnel) contain 8 funnels, Type B traps are Theyson, and Type C traps are Crosstrap® mini. Depending on the experimental design, the traps contained blades with pheromones of Ips acuminatus or Ips sexdentatus. Blades for I. acuminatus contained 2 and 3 dispensers (commercial names 4C and 5C, respectively), and blades for I. sexdentatus contained 3 and 4 dispensers (commercial names 4C and 5C, respectively). In control treatments, respective traps (A, B, and C) were left empty (without blades). Trapping experiments were carried out from 20 June through 8 August 2023. Trapped insects were collected every 7 days, dried, and sorted. Bark beetles, longhorn beetles, and predators were identified at the species level, and some other insect groups at the family level at least.
 Results and Conclusions
 Five bark beetle species (Curculionidae: Scolytinae), five longhorn beetles (Cerambycidae), five predator species from Histeridae, Cleridae, Nitidulidae, Monotomidae, and Tenebrionidae, as well as several species of Staphylinidae, Carabidae, and Elateridae were captured in traps of three types (A – Funnel; B – Theyson; C – Crosstrap® mini) with pheromones of Ips acuminatus and I. sexdentatus. Target species – Ips acuminatus and I. sexdentatus – accounted for 51% and 31% of all captured beetles, respectively. Their numbers, seasonal dynamics, and proportions depended on the trap type, pheromone, and blade. The highest number of I. acuminatus beetles was captured in Crosstrap® mini traps (C type), and that of I. sexdentatus was found in Theyson traps (type B). An increase in dispenser number provides more captures of I. acuminatus and has no significant influence on captures of I. sexdentatus. The number of Th. formicarius was the lowest in trap B (Theyson) and the highest in trap С (Crosstrap® mini). The number of Th. formicarius captured in traps A and C with the pheromone of I. acuminatus was higher than in the traps with the pheromone of I. sexdentatus. Differences in the captured Th. formicarius beetles in the traps with more dispensers with the pheromone of I. acuminatus are significant, whereas in the traps with the pheromone of I. sexdentatus they are nonsignificant.
 12 Figs., 14 Refs.

Information Resources of Ukrainian Terminography: Kharkiv Terminological

The relevance of the research. The study of terminological processes that take place at a certain stage of the development of society is of permanent scientific importance both in the linguistic aspect and in any other aspect of the development of technology or culture. The issue of national term creation and term usage in priority positions is conditioned by the processes of consolidation of the scientific community’s forces to consider science, technology, and culture as an integral national phenomenon.
 The purpose of the research is to study the role of the Kharkiv scientific community in the development of Ukrainian terminology during 1940–2020.
 The methodology. The statistical method and the method of generalization provide empirical material regarding the facts of the publication of terminological dictionaries in Kharkiv. The use of analytical-synthetic, logical, comparative methods allows to describe the results of the research, to establish the role of the Kharkiv scientific community in the formation, normalization and codification of the modern Ukrainian scientific language. The visualization method allows to graphically present the results of the analysis of terminographic activity.
 The results. The terminographic activity of scientific and educational institutions operating in Kharkiv unfolds in line with the nationwide processes of formation of terminological lexicography. The sectoral spectrum of terminographic works testifies to the breadth of scientific and technical, socio-economic, educational, and cultural priorities of Kharkiv region. Ukrainian terminology is represented by a wide variety of lexicographic works. Kharkiv institutions of higher education are the leading centers of terminographic work.
 The scientific novelty. Modern terminology requires studying of the achievements of the leading scientific centers of Ukraine. The study of the state of publishing activity lies in the context of evaluating the general processes of formation of scientific schools in Ukrainian terminology. Scientific and educational institutions, professional centers, creative teams, Kharkiv scientists made a significant contribution to the development of the national terminological school. The modern level of normalization and codification of special vocabulary is formed by the consolidated efforts of all scientific centers of Ukraine.
 The practical significance. The research popularizes the terminographic achievements of Kharkiv scientific schools, introduces into scientific circulation a set of dictionaries and encyclopedias describing modern scientific language.
 The conclusion. The study of the temporality of terminographic processes, the sectoral composition of terminographic works testifies to the formation of powerful scientific schools in the city universities, the innovative positions of scientific teams, the interest of university management, as well as the civic attitude, professionalism, language training, and enthusiasm of the authors.

Local food policy: implementation of food initiatives from the national level to the level of territorial communities of Kharkiv region

The article is devoted to the analysis of food policy in the Kharkiv region. In addition, the article examines certain aspects of the national policy aimed at preventing the food crisis in the conditions of war. The author briefly examines the main problems and challenges faced by agriculture and the food sector in wartime conditions. The article highlights the main measures aimed at ensuring equal access to food products in wartime and the steps taken for this purpose at different levels: national, regional and in individual communities of the Kharkiv region. In more detail, the article examines the role of local authorities and public initiatives in improving food policy, as they allow not only to ensure food security, but also to involve internally displaced persons in economic activities. The author states that the prospects of food policy in the Kharkiv region are dependent on many factors, in addition to the actual course of the military conflict. The article concludes about the special importance of the following factors: strengthening the defense capability and security of agricultural facilities, transport routes; increasing the efficiency and transparency of the mechanisms of state regulation of food prices, control over the quality and safety of food products, prevention of speculation and abuse; expanding the scope and variety of state support to national food producers; development of international cooperation and integration into the European and world market; support and development of public organizations, volunteer movement, social entrepreneurship, local initiatives and projects that contribute to the provision of food and support to the needy; raising the level of education, culture, awareness and responsibility of the population regarding food security.

Social demand for Healthy Food for pupils in Ukraine: Case of Kharkiv region

The article discusses the issue of healthy eating in Ukraine, namely the public demand for healthy eating and, as a result, the demand for reforming the nutrition system. The focus of the study is on students, which was done for several reasons: eating habits are formed at school age and become the basis for attitudes towards nutrition in adulthood; students are a social group that is particularly influenced by media marketing technologies and the advertising industry. Marketing in the media mainly promotes fast food and other types of junk food, which contradicts the formation of a healthy lifestyle. The Department of Science and Education of the Kharkiv Regional State Administration, together with V. N. Karazin Kharkiv National University, conducted a survey of 8-11th grade students of general secondary education institutions in Kharkiv region about their diet at school and at home. The online survey of students lasted from March 10 to April 12, 2021. A survey of parents and teachers of students was conducted from April 26 to July 1, 2021. The article analyzes the results of the study of nutrition in schools in Kharkiv region in several areas: sufficiency, accessibility of school meals, habits and attitudes. One of the main conclusions reached by the authors is that there is a demand for healthy food in schools and for improving the school diet. This conclusion raised the following research question: how to meet this demand. However, this issue is a systemic one, and therefore its solution plan should include the interests of all stakeholders. Based on the common areas of the concept of sustainable development and the theory of social cohesion, the authors propose the introduction of innovative living laboratories. Innovation laboratories are aimed at involving consumers in the evaluation of products and services along with other stakeholders. The article was published within the framework of the project "Stimulating Urban Food System Transformation through the Implementation of Innovative Living Laboratories" (FUSILLI) under the grant agreement № 101000717 (HORIZON2020).

Food inequality in Kharkiv during the war: an overview of causes, manifestations and ways to overcome

The article presents one of the aspects of the working theme of the Kharkiv team of the Fusilli project, namely, a general overview of the concept and phenomenon of food inequality as one of the forms of manifestation of general social inequality, as a process that outlines unequal and uneven access for different groups in different periods of time to benefits and resources necessary for the full reproduction of vital forces and provision of opportunities for personal development. Food inequality is problematized as a concept necessary to describe and explain the state of the city of Kharkiv under the conditions of a full-scale invasion at three stages: (1) the availability of food products as such in the Kharkiv region; (2) access to goods, that is, the very possibility of purchasing goods in one or another quantity and quality; (3) use of the goods, which are related to the possibility of consumption of the necessary goods. The concept and phenomenon of food inequality is correlated with other forms of social inequality, and an instrumental definition of the main causes and manifestations of food inequality is proposed. A general assessment of the state of food inequality in Ukraine is given and preliminary results of the author's sociological research are given. The article also reviews international, national and local initiatives aimed at solving the problem of food inequality, in particular the policies of central and local authorities, grant programs from foreign companies, the activities of local and international public, volunteer and charitable organizations. The authors come to the conclusion that the possibilities of solving the problem of food security exclusively by economic means and tools are limited, since it is a complex problem that requires a systematic solution involving not only economic, but also political, ecological, cultural, informational, etc. levers.

Sustainable development at school: teaching the «5R» principle (on the example of the Zero Waste Kharkiv summer camp for children from the IDPS)

Today's Ukraine is facing unprecedented environmental pollution caused by a full-scale invasion and military aggression. In addition to systematic work to reduce the impact of military operations on the environment, the issue of developing environmental awareness and adherence to environmental behavior to prevent or at least reduce environmental pollution is becoming even more urgent. Teaching environmental behavior to school-age children is particularly important and promising in this context. The article is devoted to the study of the practice of teaching the «5R» principle to children through interactive games, informal lectures and discussions. The «5R» principle is a comprehensive approach that aims to achieve environmental safety for modern society and future generations, that is why it must be learned in childhood. The principle itself is an element of the «zero waste» lifestyle, which was launched by a French eco-activist in the 2000s. The article examines the essence and components of the «5R» principle (refuse, reduse, reuse, recycle, rot), how this principle will contribute to sustainable development, and how this principle can be implemented in education. An example of the implementation of the 5R principle in education is the Kharkiv Zero Waste summer camp, which was organized for children from IDP families (from the de-occupied areas of Kharkiv region). The project was implemented by the Center for Civic and Media Initiatives (Zero Waste Kharkiv) with the support of Calidris and information support from the Ministry of Education and Science of Ukraine and the Ministry of Environmental Protection and Natural Resources of Ukraine. Out of the total number of 64 applications submitted, 13 participants were selected to participate in the project, including the Kharkiv team of the FUSILLI project. The article highlights successful camp practices, peculiarities of working with the target audience (in particular, the need to take into account the previous experience of children) and prospects for implementing the 5R principle not only during local events (such as camps), but also implementing the principle as a cross-cutting practice in the educational process.

The Composition of Zoophilic Fly Species in Eastern Ukraine

Zoophilic Diptera plays a leading role in the epizootic foci formation of many infectious and parasitic diseases and directly affects the quality of livestock products. The current study aimed to analyze the number and species composition of parasitic Diptera in industrial, farm, and homestead agrobiocenoses of large and small cattle, pig, and poultry farms in Eastern Ukraine. The research involved entomological collection during the peak activity daylight hours in early May, July, and early September 2021-2022 per farm. A total of 360 entomological collections were made, and 4310 zoophilous flies were examined. In livestock farms of five districts of the Kharkiv region of Ukraine, 28 species of zoophilic flies were registered, among which Musca domestica, Muscina stabulans, Stomoxys calcitrans, Lucilia sericata, Protophormia terraenovae, and Drosophila species were dominant species. The analysis revealed that cattle biocenoses hosted 27 fly species, pigs had 8 species, and poultry and small cattle each had 7 species. The study indicated an increase in the population of Musca autumnalis, the main species in the pastures, near livestock premises during the summer. Stomoxys calcitrans was also recorded in livestock agrobiocenoses. The species Musca domestica, Musca autumnalis, and Stomoxys calcitrans account for 78.8% to 88.3% of the entire complex of zoophilous flies. The two species of Ortellia caesarion (shiny dung beetle) and Ortellia cornicina (green dung beetle), known for their role as manure mineralizers and deemed non-threatening to animals, were completely absent during the research period. The findings indicated the species of Eristalis tenax in agrobiocenoses in 2021. Therefore, it can be concluded that zoophilic flies are physical irritants to animals and potential carriers of many infectious diseases, especially diseases caused by unicellular organisms.

Analysis of the quality indicators of electricity supply services on the example of the distribution system operator JSC "Kharkivoblenergo"

The resolution of the National Commission in 2021 for the operator of the distribution system JSC “Kharkivoblenergo”, which operates in the territory of the city of Kharkiv and the Kharkiv region, established a tariff for electricity distribution services with the application of incentive regulation, which provides for tariff formation on the basis of long-term regulation of tariffs and adjustment of the necessary income of the Company based on the performance of the task of achieving the target values of the quality indicators of electric energy and compliance with the guaranteed standards. In accordance with this Resolution, the indicators of the quality of services System Average Interruption Duration Index (SAIDI) and System Average Interruption Frequency Index (SAIFI) for the supply of electric energy were analysed using the example of the operator of the distribution system JSC “Kharkivoblenergo”. The SAIDI quality indicator is characterized by the duration of long interruptions in electricity supply in the distribution system of JSC “Kharkivoblenergo”. The SAIFI quality indicator provides information on the frequency of long interruptions in electricity supply in the distribution system of JSC “Kharkivoblenergo”. The analysis of SAIDI and SAIFI indicators was performed for the short-term period of operation of the operator of the distribution system JSC “Kharkivoblenergo”, namely for December 2021. Based on the results of the analysis of SAIDI and SAIFI indicators, it follows that the achievement of the target values of quality indicators allows adjusting the necessary rate of income for the operator of the distribution system JSC “Kharkivoblenergo”, and also creates a favourable investment climate, which ensures modernization, reconstruction and construction for the renewal of the energy infrastructure with the aim of improving the quality of providing services for the supply of electric energy to consumers. Also, the analysis of the indicated indicators made it possible to evaluate the work of JSC “Kharkivoblenergo” in terms of the implementation of established quality indicators, to identify problem areas in the Company's activities regarding the provision of guaranteed quality standards, to form and practically implement an investment program, to determine how quality indicators are reflected in tariff formation in the incentive regulation.

SPECIAL ASPECTS OF STATE SUPERVISION (CONTROL) IN FOOD SAFETY DOMAIN IN KHARKIV REGION UNDER THE CONDITIONS OF WAR WITH THE RUSSIAN FEDERATION

Currently, the system of state control (supervision) in the food safety and veterinary medicine domain ensures the safety of products of animal origin, plant-based food products intended for human consumption, as well as feed for animals. Objects of sanitary supervision can be a source of dangerous factors of chemical, microbiological, and radiological contamination that pose a threat to human and animal health. Taking into account Ukrainian commitments to the international community, Ukraine performs state monitoring of food products and feeds and assesses possible risks. According to the State monitoring Plans for 2022, the Main Administration of the State Service of Ukraine for Food Safety and Consumer Protection in Kharkiv Region carried out planned sampling of animal food and plant-based products, animal feeds and sent samples for chemical-toxicological, microbiological, radiological laboratory tests, to trace residues of veterinary medicines. Under the conditions of military aggression, there was an adaptation to changes to external negative factors taking into account compliance with the requirements of both domestic legislation and international agreements.

Productivity of brown mustard plants depending on pre-sowing application of mineral fertilisers and foliar feeding

Brown mustard has a prominent genetic potential for seed productivity, which can be fulfilled by optimising the elements of cultivation technology, namely the nutrition system, which makes research relevant. The purpose of this study was to determine the complex effect of the combination of different variants for pre-sowing mineral feeding and foliar feeding with water-soluble fertilisers on the formation of productivity elements and biological yield of brown mustard seeds. Field, laboratory (for accounting for structural elements of the crop), and statistical (for mathematical processing of materials) research methods were used in the study. The study was conducted in 2020, 2021, and 2023 on the basis of the farm “KYRYCHENKO M” located in the central part of Borivskyi district of Kharkiv region. The experiment compared five variants of pre-sowing mineral feeding and five variants of foliar feeding with various combinations of water-soluble fertilisers. The largest number of seeds on the plant and the largest mass were in the variants of the combination of pre-sowing application of N45P45K45 and carrying out two foliar feedings during microphases 21-23 and 50-53 with a mixture of carbamide and complex fertiliser Quantum technical – 627.3 pcs. and 1.97 g, respectively. However, these indicators did not significantly differ from the variant with a lower dose of presowing fertilisers – N45P30K30. Generally, according to the experiment, the highest biological yield of brown mustard seeds in an average of three years was in the variants of the combination of pre-sowing application of N45P45K45 and N45P30K30 with two foliar top dressings with different mixtures of fertilisers – 2.72-2.79 t/ha. Proceeding from this, the best variant in the experiment was the pre-sowing application of N45P30K30 in combination with two foliar feedings during microphases 21-23 and 50-53 with a mixture of carbamide and the complex watersoluble fertiliser under study in single doses of 10 kg/ha and 2.0 l/ha, respectively. It was established that the highest biological yield of mustard seeds in all years was on the variants of pre-sowing application – N45P45K45 and N45P30K30. There was no significant difference between these variants by year. The findings of this study can be used by agricultural enterprises to adjust the nutrition system (pre-sowing application of complex fertilisers and foliar feeding), which will ensure a more complete fulfilment of the genetic potential of brown mustard productivity

Geoecological assessment of forest landscapes as a basis for the evaluation of ecosystem services

Purpose. To study the use of geoecological assessment of forest landscapes as a basis for the assessment of ecosystem services to take into account the natural and anthropogenic conditions of their functioning. Methods. The results of the geoecological assessment were translated into indicators of ecosystem services: provision and regulation. Results. The geoecological assessment of forest landscapes was carried out on a model plot of the Vasyshchivske Forestry of Kharkiv Region, as representative for all forest landscapes of Kharkiv Region - watershed, valley, and beam-thrust. On the basis of the previously conducted geoecological assessment of the forest landscapes of the model area by the means of landscape and ecological planning, the indicator of the amount of ecosystem services to provide for medieval stands by species composition per 1 ha was determined. Thus, on the basis of the Analytical Portal of the state wood accounting system, it was determined that for 2022, the average value of wood by species composition for the Kharkiv region was determined. Thus, the value of the ecosystem service for providing wood is about 604.5 million hryvnias. In terms of unit area (1 ha), the indicator of the ecosystem service will be UAH 13,247/ha. The indicator of the value of ecosystem services for regulation, in particular of the carbon capacity for the model plot, was determined for medieval stands by species composition per 1 ha. Conclusions. The proposed use of geoecological assessment based on the landscape-ecological approach provides an opportunity to take into account landscape conditions, the impact of anthropogenic activity, as well as the results of management decisions in nature management.

Tuberculosis in Ukrainian War Refugees and Migrants in the Czech Republic and Slovakia: A Molecular Epidemiological Study.

The war in Ukraine has led to significant migration to neighboring countries, raising public health concerns. Notable tuberculosis (TB) incidence rates in Ukraine emphasize the immediate requirement to prioritize approaches that interrupt the spread and prevent new infections. We conducted a prospective genomic surveillance study to assess migration's impact on TB epidemiology in the Czech Republic and Slovakia. Mycobacterium tuberculosis isolates from Ukrainian war refugees and migrants, collected from September 2021 to December 2022 were analyzed alongside 1574 isolates obtained from Ukraine, the Czech Republic, and Slovakia. Our study revealed alarming results, with historically the highest number of Ukrainian tuberculosis patients detected in the host countries. The increasing number of cases of multidrug-resistant TB, significantly linked with Beijing lineage 2.2.1 (p < 0.0001), also presents substantial obstacles to control endeavors. The genomic analysis identified the three highly related genomic clusters, indicating the recent TB transmission among migrant populations. The largest clusters comprised war refugees diagnosed in the Czech Republic, TB patients from various regions of Ukraine, and incarcerated individuals diagnosed with pulmonary TB specialized facility in the Kharkiv region, Ukraine, pointing to a national transmission sequence that has persisted for over 14years. The data showed that most infections were likely the result of reactivation of latent disease or exposure to TB before migration rather than recent transmission occurring within the host country. However, close monitoring, appropriate treatment, careful surveillance, and social support are crucial in mitigating future risks, though there is currently no evidence of local transmission in EU countries.

Increase in physical and mechanical properties of decorative concretes for the post‐war restoration of residential and public buildings in the Kharkiv region with the addition of highly dispersed calcite (chalk)

AbstractDuring the war active, a huge number of residential and public buildings were destroyed not only in Kharkiv and the region, but throughout Ukraine. For the restoration of destroyed buildings, new types of cement will be needed to look for and will be created decorated concretes based on them that would provide high operational and technological properties of constrictions and will be focused on local materials. Carbonate additive such as highly dispersed calcite (chalk) can be used for as local additive for concrete due to significant reserves are located in Kharkiv region. In the article research on the impact of joint action additive of highly dispersed calcite (chalk) and natural pigment (ocher) is presented by physical and mechanical properties such as density, strength, water resistance, and frost resistance. It has been established that, depending on the percentage of highly dispersed calcite (chalk), the physical and mechanical properties are changed irregularly. On the basis of the conducted researches it was established that the optimal amount of the addition of high‐fossil chalk, which provides increased frost resistance and corrosion resistance of concrete in an aggressive environment, containing chlorides, sulfates and magnesium ions, is from 10 % to 30 %. In addition, it increases density, compressive strength, stretching strength at bending. At the same time, it should be noted at an increased amount of fine chalk to 40% leads to a decrease in physical and mechanical characteristics. But the introduction of plasticizer in the amount of 0.5% leads to increased compressive strength and, accordingly, increases the positive qualities of chalk. The concrete compositions that getting with high decorative and operational properties are allowed to use them for the restoration of the city and increase in urban space.