Technological Characteristics Research Articles

МАГИЧЕСКОЕ ОРУЖИЕ ГЕРОЕВ ЭПОСА «НАРТЫ»

The article examines the archaic cult of the god of iron and the patron saint of metal Tlepsh, the emergence of metallurgy, the creation of the first weapons and armor made of metal, which are reflected in the Adyghe heroic epic Narts. The relevance of the article is due to the fact that the heroic epic Narts is almost not considered in the scientific literature as a source of information for the study of objects and tools, the creation of the first weapon, the addition of a complex of weapons and armor of horsemen. The purpose of the study is to compare the weapons of the heroes of the Nart epic, endowed with magical properties, having certain qualitative characteristics, technological features of manufacture, with the materials of archaeological sites of the Northwestern Caucasus. To achieve these goals, a comparative historical research method was used to determine the features of the origin and composition of various types of offensive and defensive weapons, reflecting the stages of development of blacksmithing and weapons production in a historical context. The transformation of the Chthonic «fire» god into the patron saint of iron and blacksmithing of the nart Tlepsha translates in the legends of the Nart epic the historical and economic prerequisites for the origin of metalworking in the Early Iron Age, the creation of the first tools and weapons of the sleds, which became models for creating the best defensive and offensive weapons in Eurasia. The archaeological sites of the Northwestern Caucasus confirm the continuous development of metallurgy and metalworking since ancient times and the creation of highly artistic bronze, gold, and silver products. The initiated research on this topic has a long–term perspective and requires continued work on the study of the original texts of the Adyghe heroic epic «Narts» for comparison with archaeological artifacts found in the Northwestern Caucasus.

МОДЕЛИРОВАНИЕ ПРОЦЕССА ПРОГНОЗИРОВАНИЯ ДЕФИЦИТА ВЫЧИСЛИТЕЛЬНЫХ МОЩНОСТЕЙ НА ЗНАЧИМОМ ОБЪЕКТЕ КРИТИЧЕСКОЙ ИНФОРМАЦИОННОЙ ИНФРАСТРУКТУРЫ

The aim of the study is to formalize the process of forecasting the computing power deficit at significant objects of critical information infrastructure using a functional model. The task is to create a correct functional model for forecasting the computing power deficit. To solve this problem, the BPwin software product and functional modelling methods are used. The novelty of the work lies in using the analytical alignment of dynamic series to forecast the computing power deficit at significant objects of critical information infrastructure. As the study result, the authors build a functional model of the process of forecasting the computing power deficit at significant objects of critical information infrastructure. Thus, the resulting functional model reflects the technological features of the process of forecasting the computing power deficit and can be automated and applied to significant objects of critical information infrastructure in the future.

The sphere of exposure: centering user experience in community science air monitoring

Community science has increased in popularity in communities where residents hope to investigate the relationship between environmental issues and personal health. This study partnered with neighborhoods in the most polluted residential zip code in the US to conduct community science air quality monitoring. We conducted 60 semi-structured interviews after two monitoring deployments to understand participants’ subjective experiences of pollution exposure, their engagement with low-cost air quality monitors, and their data interpretation. We utilize the environmental health concept ‘exposure experience’ to analyze how participants use personal monitors, understand their data, and reinterpret their pollution exposure as a result. We further explore how participants’ understandings are circumscribed by the technological features of low-cost monitors. We find that participants adopt both protective and mitigating behavioral changes based on information gained from personal experiments and hypothesis testing while using the monitors. Of their own accord, 40% of participants in this study adopted mitigation behaviors after identifying sources that impacted their personal air quality. Our analysis reveals that real-time data accessibility through low-cost monitors builds exposure awareness and enables residents of environmental justice communities to test, validate, or invalidate sensory experiences and challenge existing assumptions. These findings point to specific pathways for using low-cost monitors to support individual decision-making and contribute to behavioral change. Findings also identify some limitations of low-cost monitors; designers of low-cost monitors should consider how composite Air Quality Scores may encourage community scientists to equally value scientifically-established pollutants (e.g., PM) with less scientifically-established pollutants (e.g., TVOCs), without additional scientific training and health-related information.

LUMINESCENCE CHARACTERISTICS OF CASO4:TB,M (M=NA,K,RB) PHOSPHORS

In the present study, the investigation of complex luminescence terbium centres as well as the analysis of technological features of the synthesis of small-grained wide-gap CaSO :Tb3+ anhydrite phosphors containing 1% of Tb3+ and some amount of additional impurity ions (Na+, K+, Rb+) have been continued using the methods of optical and thermoactivation spectroscopy. Of particular interest was a contribution of calcium ions into formation of complex luminescence centres. Ca causes efficient dynamic hybridization of electronic states and influence on the formation of terbium and near-terbium electronic excitations. The excitation spectra of Tb3+-centre emission have been measured in the VUV spectral range at 77 or 300 K. The excitation band related to the lowest f–d transition of Tb3+ ions at ≈5.9 eV in CaSO4 undergoes broadening toward the long- wavelength side, when the radius of a charge compensator increases (K+→ Rb+). The band at 7.5–9 eV ascribed to the excitation of oxyanions has a different shape in CaSO4:Tb,K and CaSO4:Tb,Rb. Thermally stimulated luminescence (80–700 K) have been analyzed for a set of anhydrite phosphors previously irradiated by X-rays at 80 and 300 K. Keywords: CaSO , Tb3+, photoluminescence, thermoluminescence, vacuum ultraviolet spectroscopy.

Gluconate solutions for nickel electrodeposition and nickel electroless plating

Nickel electroplating has found a wide range of industrial applications as a technique for creating protective and decorative coatings of metallic and non-metallic surfaces, protecting materials against corrosion at elevated temperatures in both alkaline environments and organic acid solutions, forming a sublayer for obtaining coatings of other metals on steel, enhancing the hardness and wear resistance of surfaces, as well as for improving solderability. Such coatings can be obtained from weakly acidic aqueous and weakly alkaline complex electrolytes. In this review, we analyze the available literature on complexation of nickel(+2) with D-gluconate ion CH2OH(CHOH)4COO‾, along with that on compositions and some technological characteristics of complex D-gluconate solutions for nickel electrodeposition and electroless plating. Thus, a corrosion-resistant smooth light-colored nickel coating, tightly adhered to a copper substrate, was obtained from an electrolyte with a pH level of 8, containing 53 g/dm3 of NiSO4 •6H2O, 44 g/dm3 of D-C6H11O7Na, 25 g/dm3 of H3BO3, 53 g/dm3 of (NH4)2SO4, and 0.5–3 g/dm3 of CO(NH2)2, at a temperature of 25 °C, a cathodic current density of 2.5 A/dm2 with a current efficiency of 96.4%. An electroless Ni-P(3–18 wt%) alloy coating on copper was obtained from a solution with a pH level of 9, containing 5–30 g/dm3 of NiSO4 •6H2O, 10–60 g/dm3 of D-C6H11O7Na, 5–40 g/dm3 of NaH2PO2 •H2O, 3 g/dm3 of HOOCCH2CH2COOH, 0.5 g/dm3 of CH3(CH2)11OSO3Na, 0.002 g/dm3 of Pb(CH3COO)2•3H2O, at a temperature of 90 °C and a deposition rate of up to 0.75 μm/min. The review also discusses methods for preparing D-gluconate electrolytes for nickel plating using sodium D-gluconate, D-glucono-1,5-lactone, and nickel D-gluconate. One advantage of D-gluconate nickel plating solutions consists in the absence of toxicity and low cost of D-gluconates.

PECULIARITIES OF CRACK FORMATION IN HETEROPHASE INCLUSIONS OF THE “EUTECTICS OF INCLUSION − MATRIX” TYPE

Purpose. The goal of the work was to study the peculiarities of crack nucleation in heterophase inclusions of the “eutectic inclusion − matrix” type during steel deformation. Methods. The research was carried out after deformation of samples from steels 08Yu, 12GS, 08kp, 09G2S, NB-57, 08GSYUTF in the temperature range of 20…1 200 °C with the speed of movement of grips 1 680 mm/min. The research methods were used − petrography, micro-X-ray spectral analysis (Cameca MS-4, Nanolab-7), optical microscopy (Neophot-21). Results. It is established that the variety of phases that make up heterophase inclusions of the type “eutectic of inclusion − matrix” leads to their different behavior under conditions of plastic deformation. It is shown that the nucleation of brittle or viscous microcracks occurs along the internal interfacial boundaries between the metal matrix and the second phase of the eutectic. It is determined that the nature of cracks is determined by the level of plasticity of the inclusion phases and the deformation temperature. It is shown that the critical degrees of deformation of the samples, at the achievement of which there were noticeable microcracks along the internal interfacial boundaries, depend on the temperature and nature of the phases of inclusions “eutectic of inclusion − matrix”. It is established that the values of critical degrees of deformation determine the level of cohesive strength of the internal interfacial boundaries in heterophase inclusions “inclusion − matrix eutectic”. Scientific novelty. Peculiarities of microcracking nucleation in heterophase inclusions of the “inclusion − matrix eutectic” type have been established. It is shown that the nature of microcracks formed along the interfacial boundaries depends on the temperature, level of plasticity and conditions of combination of brittle and plastic phases in inclusions of the “eutectic of inclusion − matrix” type, as well as on the deformation temperature. It is shown that the critical degrees of deformation of steels, when microcracks occurred along the inner interfacial boundaries, determine the cohesive strength of these boundaries and depend on the temperature and nature of the phases of inclusions such as “inclusion − matrix eutectic”. Practical significance. The use of the results obtained will make it possible to develop technologies for producing steels with regulated types of heterophase nonmetallic inclusions, which will significantly increase their technological and operational characteristics, as well as prevent the formation of various kinds of defects during the processing of steels by pressure and the operation of products.

DEVELOPMENT OF INNOVATIVE TECHNOLOGY AND HARDENING EQUIPMENT FOR THE IMPLEMENTATION OF HARDENING HEAT TREATMENT OF METAL PRODUCTS USING FLUIDIZED BULK MATERIALS (PART 1)

Statement of the problem. One of the main problems faced by a modern enterprise is the search for ways to improve the efficiency of its activities. For the effective functioning of the thermal units of toolmaking industries, the simultaneous availability of heating and quenching devices with different heating and cooling media is required. This explains the desire of manufacturers and scientists to find technological, cheap, environmentally friendly heating and cooling media that can provide the required heat treatment parameters and high quality of the processed parts. The purpose of the article is to analyze the state-of-the-art of hardening thermal (combined) treatment methods using bulk materials as media for volumetric heating and forced cooling of metal products and the design and technological features of hardening devices that can ensure a rational structural state of metal parts of complex geometric shapes with a minimum level of their warping and deformation on the example of using vibro-fluidized bulk materials (in the technical literature, the term vibro-gravity particles of heat is used). Research results. To analyze the results of tests of bulk materials as quenching media for high-alloy steel grades and their effect on the structure and properties of the metal in comparison with the traditional oil quenching regime. To consider the features of quenching devices that use mechanical vibration to produce vibro-s bulk material and the possibility of their use in the implementation of quenching modes (including isothermal) of steel products of complex geometric shapes. Conclusion. The use of fluidized bulk materials in industry as media for volumetric heating and hardening of metal products and the design of devices for their use has been investigated. The advantages of the fluidized bed cooling method for the effective implementation of hardening heat treatment regimes are determined. It is shown that this method of forced volumetric cooling of toolmaking products is rational in terms of various indicators. The structural and technological parameters of devices for its implementation are analyzed, which can consistently provide the required level of properties of alloyed and high-alloy tool steels with a minimum level of warping and deformation.

Research of Modified Polyamide Waste Agglomerate: Regulatory Issues and Technological Features

In this article, a regulatory processes study and technological properties of polyamide waste agglomerate modification is carried out. The legal support issues for polymer waste management in Ukraine are considered, ways to improve the most problematic aspects in this area are proposed. The technological properties of polyamide-6 waste agglomerate modification processes were studied in order to improve its technological and strength characteristics. MW-PA CB10 masterbatch modifier impact on the polyamide-6 waste agglomerate technological and strength characteristics complex was studied. It was established that the best is polyamide-6 waste agglomerate with 2 % wt. of masterbatch MW-PA CB10. For this composition the impact strength is 43.5 MPa, breaking stress during bending is 126.4 MPa, tensile strength is 342 N and elongation at break is 117 %. It can be recommended for reuse in traditional fields of primary polyamide-6 to obtain engineering and technical products.

Catalogue of surface proteins of Lactiplantibacillus plantarum strains of dairy and vegetable niches

Lactiplantibacillus plantarum (formerly Lactobacillus plantarum) exhibits relevant probiotic and technological features and is widely used in food industries, improving flavour, texture and organoleptic properties of fermented products. Cell-surface proteins have a key role in the molecular mechanisms responsible for healthy effects, being the first actors in the bacteria - host interactions. Proteins present on the surface of four L. plantarum strains (two isolated from vegetable matrices and two from dairy products) were identified by proteomics with the aim to gain a comprehensive picture of differences in protein profiles potentially related to the habitat of origin and specific properties of the analyzed strains. Results highlighted a more diversified pattern of surface proteins in strains from vegetable matrices compared to those from dairy matrices (>500 proteins vs about 200 proteins, respectively). The four strains shared a core of 143 proteins, while 445 were specifically present in strains from vegetable matrices and 26 were peculiar of strains from dairy origin. Sortase A, involved in adhesion, and choloylglycine hydrolase (bile salt hydrolase) were detected only in strains from vegetable matrices. The peculiar molecular functions of identified proteins suggested that these strains, and in particular L. plantarum S61, could have a significant probiotic and biotechnological potential.

Study of Polymer Ceramic-Inorganic Composites for Electromagnetic Radiation Absorption

The aim of the presented work is to study polymer ceramic-inorganic composites for electromagnetic radiation absorbing. Epoxy-based polymer composites modified with ceramic-inorganic graphite-ferromagnetic (CIGF) fillers were first obtained: silicon carbide, chromium oxide Cr2O3, graphite, humic substances and potassium titanate. As polymer matrix epoxy resin based on Epikote Resin MGS LR 285 and Epikure Curing Agent MGS LH 285 was studied. Primary research was directed to study humic substance, silicon carbide SiC, chromium oxide Cr2O3, graphite and potassium titanate nanoparticles introduction impact on polymer ceramic-inorganic composites strength and technological properties. Complex of technological and strength characteristics were researched and compositions with humic substances 0.5 wt%, a higher silicon carbide SiC – 10 wt% content were studied, while chromium oxide Cr2O3, graphite content in 5–25 % wt. range was optimized. Results shows, that addition of humic substances, silicon carbide SiC, chromium oxide Cr2O3, graphite and potassium titanate nanoparticles into the epoxy resin up to 20 wt% filler content increases the composite impact strength and breaking stress during bending. The CIGF fillers complex system using advantage is proven by studying the nature of modification effect on ceramic-ferromagnetic-graphite polymer composites for electromagnetic radiation absorption.

Another Traveler Design In Southern Patagonia: Long Edges (Knives and Side-Scrapers) Manufactured on Bifacial Blanks

ABSTRACT New information is presented on the particular design of side-scrapers and knives, referred to as long-edge artifact on biface (LEAB), and its spatial and temporal distribution in southern Patagonia is explored. The analysis considers morphological and technological characteristics, the presence of four specific attributes (overshot, platform, end thinning, and domes), and functional information at a microscopic level. A total of 101 lithics originating from academic investigations, private collections, and environmental impact assessments from different locations around the Santa Cruz province (Patagonia, Argentina) are studied. The distribution of LEAB reaches different sectors of steppe and mountain forest areas from at least 7000 years BP and into the late Holocene. In addition, LEAB manufacture among inland hunting-gathering populations and between them and maritime hunter-gatherers is recorded. These results support the transmission of information about LEAB design circulation across Southern Patagonia.

Palaeolithic investigations at Morpani, Central Narmada Basin, India

Morpani is a recently discovered Palaeolithic complex in the central Narmada Basin (Madhya Pradesh, India), discovered during the course of field investigations carried out by the Narmada Basin Palaeoanthropology Project. This site is situated in a region of the Gondwana Supergroup formations, south of the Narmada River. Regions to the north of the river, dominated by rock outcrops of the Vindhyan Supergroup formation present a multitude of Palaeolithic sites, in stark contrast to the southern region, dominated by the Gondwana Supergroup and Deccan Trap formations. This site is one of the few Palaeolithic sites in this southern region, and this paper reports on the recent Palaeolithic investigations undertaken at the site and the results of the lithic analyses of the recovered lithic assemblage. These investigations were carried out to qualify the nature of the Palaeolithic occupation in this region, as well as probe into the possible factors for the underrepresentation of the archaeological record here, especially when juxtaposed to the rich archaeological context noted to the north of the river. Lithic analyses indicates that Morpani represents an expedient lithic assemblage, located along the banks and bed of an ephemeral stream channel, and in regions where suitable raw material clasts are available. More work and collections are needed to securely characterise and attribute the technological features of this Palaeolithic site.

Behind the curtain: exploring the inter-governmental collaboration mechanisms for e-governance platforms

PurposeTo fill the gap, this article examines the inter-governmental collaboration mechanisms behind the platform curtain.Design/methodology/approachBehind the curtain is to look at what makes things happen backstage. For collaborative e-governance platforms, scholars have assumed that technological factors and user characteristics are the determinants for platform success. Little attention has been paid to the issue of how multiple governments, acting as platform co-builders and co-operators, interact and collaborate backstage to provide integrated e-services.FindingsBased on data from survey questionnaires sent to government employees, the results show that governments’ information processing capacities cannot directly affect collaboration; however, these capacities can impact collaboration via the mediating variable of horizontal relations. In addition, we found that higher-ranking authorities are better suited to intervene once horizontal relations have been established and that more adaptable organizations are better at forming horizontal relations with peers. For governments participating in collaborative e-governance platforms, our findings are practically applicable.Originality/valueThe research question reads as: How do various government departments acting as platform co-builders and co-operators judge their collaboration performance, and what collaboration mechanisms contribute to it? We study this research question by constructing a conceptual model based on the Organizational Information Processing Theory (OIPT) and the Collaborative Governance Theory (CGT), both suggesting information processing capacities, organizational flexibility, horizontal relations and vertical intervention as indispensable factors influencing collaboration performance in ICT-supported groupwork. We propose and test four hypotheses on the relationships among these four factors to reveal the inter-governmental collaboration mechanisms for cross-government platformisation projects.

Stone Tools in Shifting Sands: Past, Present, and Future Perspectives on the Châtelperronian Stone Tool Industry

The Middle to Upper Palaeolithic transition in France and northern Spain reflects the transition from Neandertals to Homo sapiens and the emergence of novel cultural entities and standardised blade and bladelet technologies between ~ 55 and 40 thousand years ago. The Châtelperronian stone tool industry represents the first unambiguous appearance of Upper Palaeolithic technologies in this region, and is traditionally considered as representing a geographically isolated archaeological entity produced by late Neandertals. However, debate as to the makers and origin of this industry has been ever-present. In recent years, fuel has been thrown onto this discussion through (a) the demonstration that the association between Neandertal remains and Châtelperronian artefacts at the key site of Saint-Césaire could not be reliable, (b) the identification of an immature Homo sapiens pelvic fragment in association with Neandertal remains and Châtelperronian artefacts at the Grotte du Renne (Arcy-sur-Cure), and (c) the formulation of a disruptive hypothesis in which the Châtelperronian directly originates from the Early Upper Palaeolithic of the Levant. In conjunction with the increasing evidence for a protracted presence of Homo sapiens across Europe, these observations have led to the arrival of an inflection point for the competing interpretations concerning the origin and implications of this industry. In this paper, we provide a critical review of the Châtelperronian in light of the emerging data—taking into account technological, chronological, geographic, stratigraphic, and genetic perspectives. First we provide a detailed, three-part historiography of this industry and a modern, synthetic review of Châtelperronian lithic technology. Our review reinforces the fact that the Châtelperronian is a fully Upper Palaeolithic industry with no ‘transitional’ nor Initial Upper Palaeolithic-type technological features. Subsequently, we highlight a series of prospects, problems, and uncertainties which remain to be addressed in discussions concerning the origins, maker(s), and implications of the Châtelperronian and the onset of the Upper Palaeolithic in western Europe. Finally, we propose a few potential paths forward and call for an open and critical approach towards the re-conceptualisation of the Châtelperronian in the years to come.

Determination of plasticity of mastic asphalt mixtures by the Luer method

Abstract. Problem. Mastic asphalt mixtures, unlike other types of asphalt concrete, have certain granulometric and technological features that necessitate the use of specific quality indicators. The most informative quality indicators for mastic mixtures are plasticity at service and process temperatures. Unlike the service plasticity indicator, which is widely used and standardized in most countries of the world, technological plasticity, despite its importance, is of limited use for assessing the quality of mastic mixtures. Goal. The aim of this work was to establish the possibility and feasibility of using the Luer method to assess the technological plasticity of mastic asphalt mixtures in the road industry of Ukraine. To achieve this goal, an appropriate device was manufactured and the experimental study of the plasticity of mastic asphalt mixtures using the Luer method was carried out. Methodology. The determination of plasticity by the Luer method consisted of immersing a metal rod with a hammer under its own weight in the mastic asphalt concrete mixture. The Luer yield strength is the time, with an accuracy of 1 s, during which the rod with a hammer is immersed in the mastic asphalt concrete mixture at a distance of 50 mm (from the lower to the upper mark). Experimental determination of the plasticity of mastic asphalt mixtures of different particle size distribution with different bitumen content was carried out. Results. On the basis of experimental data, the sensitivity of the Luer method to the particle size distribution of mastic asphalt mixtures and the amount of bitumen in the mixture was confirmed. During the experimental verification of the Luer method, its advantages and disadvantages were identified. The advantages include simplicity of the device design and relative speed of the test. The disadvantages of the method are a significant volume of mastic asphalt mixture required for the test; rapid cooling of the mixture and the rod, especially in the case of determining plasticity at high process temperatures, which affects the accuracy of assessing the plasticity of mastic mixtures. Practical value. Based on a production test of determining the plasticity of mastic asphalt mixtures by the Luer method, the possibility and feasibility of its use in the domestic road industry when designing mixtures and setting technological temperatures for their preparation, which ensure the production of mastic asphalt concrete whose properties meet the requirements of national regulations, has been confirmed

Effect of atmospheric pressure cold plasma (ACP) treatment on technological characteristics of chia (Salvia hispanica L.) seeds

The highly nutritious nature of chia seeds drives its increased utilization by the consumer and industries. This study is done to investigate the impact of atmospheric pressure cold plasma (ACP) based on air gas and dielectric barrier discharge (DBD) design. ACP treatment as an emerging non-thermal processing at different time (3 and 8 min) and voltage (6.5 and 8.5 kV) on technological characteristics of chia seeds including physicochemical, rheological, thermal, textural and morphological characteristics which are generally induced by carbohydrate and protein fraction. Results indicated an increase in water absorption index (10.36 ± 0.10 g/g), swelling power (10.43 ± 0.94 g/g) and decrease in gelatinization enthalpy (313.7 ± 0.9 J/g) at samples treated for 8 min at 8.5 kV. The lowest hardness (1390.5 ± 50.4 g) and highest peak temperature (94.79 ± 0.5 °C) is also observed at samples treated for 3 min at 8.5 kV. Changes in technological properties observed through ACP treatment are generally determined by the interaction of plasma activated species with molecular components, their depolymerization and cross-link formation as verified by FTIR analysis. Regarding, ACP treatment influences the structure of protein and carbohydrate macromolecules on the basis of its intensity.

RESEARCH OF THE METHODS OF STRENGTHENING REINFORCED CONCRETE COLUMNS DURING THE RECONSTRUCTION OF INDUSTRIAL BUILDINGS

Over the past two years, Ukraine has noted significant losses of the state's residential and non-residential stock as destroyed or partially damaged. Damaged or destroyed buildings must be restored, reconstructed and dismantled and new ones erected in their place.Industrial facilities suffered significant destruction. In addition, the condition of the structures of many old enterprises is extremely unsatisfactory.Currently, only in Kyiv, about 30% of the city's territory is industrial territory.Depending on the level of reconstruction of the object, it is possible to perform certain structural and enclosing elements. Any intervention in the structural elements of buildings must be preceded by an examination of both the building as a whole and these structures themselves.Repair, dismantling or strengthening of frame structures are among the typical types of work during the reconstruction of industrial facilities. The vast majority of old industrial buildings in our country have a reinforced concrete frame, especially the buildings that were erected in the 60s of the 20th century and in later periods. These are those buildings whose structural condition still allows for reconstruction or repair in order to continue their intended use. Buildings of an earlier stage, as a rule, are subject to reconstruction (if they are monuments of culture and architecture) or dismantling.The article investigates various methods of reinforcing reinforced concrete columns, which are key structural elements of industrial buildings, during their reconstruction. The technological and organic features of reinforcement are presented. The destabilizing factors that affect the efficiency of work are systematized. Modern technologies are studied, including changing the structural scheme, increasing the cross section, injecting into the body of the structure and external gluing of metal reinforcing structures.The effectiveness of each method is analyzed, which allows to assess their advantages and disadvantages, costs and duration of the reconstruction process. In particular, attention is focused on methods that increase the bearing capacity and durability of structures without significant interference with the overall structural scheme of the building.The results of the study allow us to identify optimal solutions for different types of industrial buildings, which helps engineers and designers ensure the sustainability and safety of reconstructed facilities.

Creation of fortified products from dairy raw materials with low technological characteristics

The article presents the results of research on the development of a cranberry powder-enriched curd paste technology aimed at improving the nutritional and biological value of the product. Various amounts of cranberry powder (4%, 8%, 12%) were used in the study, allowing the evaluation of their impact on the organoleptic and physicochemical properties of the curd paste. The optimal amount was found to be 8% cranberry powder, which improved the taste, texture, and nutritional value of the product without negatively affecting its physical stability. Organoleptic evaluation showed that the product with 8% cranberry powder had the best flavor and aroma characteristics. Physicochemical analysis revealed that cranberry enrichment increased the carbohydrate and dietary fiber content, enhancing the product's functional properties. Cranberry, as a plant-based component, contributes to increasing the antioxidant activity of the product, making it more beneficial for health. The results of the study can be applied to the development of new types of fortified products based on dairy raw materials with low technological properties and expand the range of functional products in the market.

INVESTIGATION OF THE INFLUENCE OF CHOOSING THE TYPE OF FACADE SYSTEM USING ABC ANALYSIS ON THE COST OF THE LIFE CYCLE OF THE BUILDING OBJECT

The article is devoted to a comprehensive study of the influence of the choice of the type of facade systems on the total cost of the life cycle of the construction object, with a special emphasis on the application of ABC-analysis as a tool for determining the optimal option for arranging the facade, taking into account economic and quality aspects. The main purpose of the article is to justify the feasibility of using ABC analysis to select the type of facade systems and assess its impact on the costs associated with the life cycle of the building. The article provides a detailed analysis of various types of facade systems from the point of view of their fastening, materials, design and method implementation. Such systems as ventilated and non-ventilated facades, hinged ventilated facade systems, facades with cladding made of natural stone, composite materials and other modern materials are considered. Special attention is paid to the study of technological characteristics, durability and maintenance costs of various types of facade systems. The application of ABC analysis allows classifying facade systems according to their impact on the cost and quality of construction. In this context, facade systems are divided into three categories: A - the most important and expensive, B - medium importance and expensive, C - less important and with minimal expenses. This approach allows builders and designers to focus their attention on the most critical elements that affect the overall cost and efficiency of construction.As a result of the study, it becomes possible to make an informed decision regarding the choice of the optimal facade system, which best meets the specific needs of the project and contributes to the optimization of the cost of the life cycle of the building. In particular, the selection of appropriate materials and technologies allows to reduce construction costs, ensure durability and reduce maintenance and repair costs in the future. In addition, the results of the study can become the basis for the development of practical recommendations for professionals in the construction industry, including builders, designers and architects. This makes it possible to create more efficient, economical and ecologically sustainable construction objects. Also, the article emphasizes the importance of creating specialist training schools and conditions for the successful implementation of life cycle assessment technologies in the construction industry.

Wearable devices and workplace productivity: a bibliometric analysis of their integration into professional environments

This study analyzes workers' perceptions and acceptance of the use of wearable devices in the workplace. A bibliometric review supported by complex network analysis was carried out, through which the driving themes of the area were identified. The results indicate the increase in the use of these technologies and the factors linked to employee acceptance or rejection. Workers' perceptions and the potential benefits of wearable technologies are also discussed. The findings reveal factors influencing technology acceptance and highlight organizational and technological characteristics that facilitate adoption for effective daily use. The study contributes to the literature by evaluating the feasibility and acceptance of wearable technologies within companies. It underscores that the lack of employee involvement in device selection is a significant barrier to adoption.