Requirements Of Regulatory Documentation Research Articles

Theoretical and methodological foundations for forensic commodity examination of garment products

The examination of garment products is a popular type of forensic commodity expertise in proceedings related to the protection of the interests of Ukrainian producers, business entities in the sale and rental of garment products, as well as the investigation of offences related to export and import operations.
 Based on the study of the legislative framework for conducting forensic commodity research of garment products, as well as regulatory documents on the methodology for assessing the quality of garments for various purposes, the author states that there is still no unified list of control objects to be studied in the course of garment examination.
 The article is devoted to the problems of methodology for forensic commodity examination of garments. It has been established that the lack of unified terminology causes differences in the interpretation of methodological guidelines for conducting examinations and differences in the interpretation of research results. The fundamental differences between the purpose, composition of materials and market conditions of a particular type of garment can significantly affect the choice of research methods. In this regard, the article considers the nomenclature of objects of forensic commodity examination of garments, which makes it possible to streamline the expert’s actions in accordance with the specifics of the object of study. The nomenclature identifies the following groups of indicators for the examination of garments: compliance of the product and control label details with the requirements of regulatory documentation, correspondence of appearance, adequacy of the type of materials used for sewing the garment, safety of materials, quality of fit of the garment, quality of manufacture of the garment, correspondence of linear measurements to nominal values, and market value of identical (similar) goods.

NUMERICAL VALUES OF DEFECTIVE AND REFERENCE INDICATORS OF ERGONOMICS PROPERTIES OF SPACE OF AUXILIARY ROOMS FOR GENERAL USE OF AN APARTMENT BUILDING

In accordance with the general algorithm of the first theoretical stage, the basic principles of formulating reference, basic and defective values of indicators of urban planning quality of life properties and their categories were developed in accordance with the requirements of regulatory documentation in the field of construction and the results of expert assessments, which in turn provide the opportunity to determine numerical values and justify the characteristics deficient, reference and basic indicators of simple properties of a residential building, in particular properties of the ergonomics of the space of auxiliary premises for common use of an apartment building.
 Regulatory documentation provides for the following terms and definitions regarding product quality indicators in construction: 
 - basic indicator of product quality
 - the value of the indicator of product quality, which is taken as a basis for a comparative assessment of its quality;
 - the relative value of the product quality indicator
 - the ratio of the value of the evaluated product quality indicator to the corresponding base value indicator;
 - the regulated value of the product quality indicator
 – the value of the product quality indicator established by regulatory documentation;
 - the nominal value of the product quality indicator
 - the value of the product quality indicator, which corresponds to certain average or fixed conditions and is taken as the beginning of tolerance counting;
 - the limit value of product quality indicators
 - the maximum or minimum permissible value of the product quality indicator;
 - the optimal value of the product quality indicator
 - the value of the product quality indicator at which the greatest effect ratio is achieved to losses; - level of product quality
 - a relative characteristic of product quality, built on the comparison of the values of the quality indicators of the evaluated products with the basic values;
 - technical level of products - a relative characteristic of the quality of products, built on the comparison of the values of indicators that characterize the technical excellence of the evaluated products, with the basic values relevant indicators;
 - evaluation of the technical level of products
 - a set of operations, which includes the selection of the nomenclature of indicators that characterize the technical excellence of the evaluated products, the determination of the values of these indicators and their comparison with the basic ones;
 - defect - products, the transfer of which to the consumer is unacceptable due to the presence of defects.
 Categories and methods of determining defective, basic and reference indicators of a residential building according to the content of the relevant properties are divided into:
 - without physical units of measurement and regulation by regulatory documentation;
 - without physical units of measurement (or with complex units of measurement) regulated by regulatory documentation;
 - with physical units of measurement without regulation by regulatory documentation;
 - with physical units of measurement and regulation by regulatory documentation.
 On the basis of the analysis of regulatory documentation, documentary data and expert assessment, the numerical values and justification of the characteristics of defective, reference and basic indicators of simple properties of the ergonomics of the space of auxiliary premises for common use of an apartment building are determined.
 Further research will be focused on the determination of numerical values and the substantiation of the characteristics of the missing, reference and basic indicators of the properties of the residential area, in accordance with the developed range of properties of urban planning quality of life.

Determination of Corrosion Rate in Galvanized Pipes in Centralized Hot Water Supply Systems

To counteract possible corrosion, steel pipes are coated with a protective layer of zinc with a thickness of 20 to 85 microns, depending on the requirements of regulatory documentation. It is proven that hot-deposited zinc can effectively protect steel surfaces for 20 to 120 years. However, in centralized hot water supply (CHWS) systems, the period of protective action can decrease to two to three years, with further damage to the zinc layer and the appearance of fistulas. In order to counteract adverse factors, it is necessary to take into account the operating mode and design features of the system, the properties of the coating, and the environment in which the pipes operate. In this article, the main attention is paid to the study of the behavior of zinc coating. The protective properties and corrosion rate of zinc coating in tap water were evaluated. It was established that the protective effect of zinc is effectively manifested in the ratio of the protected area to the unprotected, as SZn/SFe ≥ 9:1. The influence of iron-containing sediment, when it accumulates in the pipes of a CHWS system, on the corrosion rate of the zinc coating was studied. It was also noted that the corrosion rates of the new zinc coating and uncoated steel pipe measured in short-term tests differed slightly.

Experience with the use of pharmacopoeial reference material for the activity of measles vaccine

Due to the increased incidence of measles in Russia and in many other regions of the world, vaccines for the measles prevention are especially in demand. Ensuring the quality of the measles vaccine for effective disease prevention is within the scope of the tasks of the state policy of our country. Evaluation of the experience of using a pharmacopoeial standard material of measles vaccine activity for measurement of the specific activity of the measles virus in vaccines with a measles component that are used in the Russian Federation for measles prevention. The object of the study was the Pharmacopoeia reference material (PRM) of the activity of the live measles vaccine of series 10. The activity of PRM was analyzed when determining the specific activity of the measles, mumps-measles and combined vaccines for the prevention of measles, rubella and mumps, as well as based on the materials of the summary protocols for the production of these vaccines. The titer of the measles virus in the PRM for each determination of the specific activity of the measles virus in vaccines in the Scientific Centre for Expert Evaluation of Medicinal Products in 2021-2022, as well as according to the summary production protocols, was within the boundaries of the certified value (4.63 ± 0.5) lgTCD50/0.5 ml, and the test results met the acceptance criteria in accordance with the requirements of regulatory documentation. During the observation period, the average value of the PRM titer (4.61 lgTCD50/0.5 ml) practically did not differ compared to the average value of the certified characteristics of the PRM, the standard deviation of the mean value of the measles virus titer in the PRM did not exceed 0.15 lgTCD50, which indicated the stability of the analytical work at the enterprise and in IC. The data obtained indicate the stable activity of PRM, the correctness of the determination of the measles virus titer in the vaccination dose of the vaccine, and the validity of the method for monitoring the specific activity of the measles virus in vaccines.

Experimental Substantiation of Feasibility of Using Enzymatic Fibrin Hydrolyzate-Based Medium to Obtain Components of Chemical Cholera Vaccine

The aim of the study was to experimentally substantiate the possibility of using a nutrient medium based on enzymatic fibrin hydrolyzate in order to obtain specific components of chemical cholera vaccine: cholerogen-anatoxin and O-antigen. Materials and methods. We used production strains of Vibrio cholerae 569B and V. cholerae M-41. Submerged low-volume cultivation was carried out in a laboratory fermenter for 8 hours, with automatic maintenance of cultivation parameters and feeding with glucose on the nutrient medium based on enzymatic fibrin hydrolyzate, containing (1.0±0.1) g/l of amine nitrogen, pH being (8.0±0.1). Cholerogen-anatoxin and O-antigens were obtained from detoxified formalin-treated centrifugates of culture liquids. The specific activity of V. cholerae antigens at the stages of cultivation and isolation was determined applying immunochemical methods. The preparation of the finished dosage form of the cholera vaccine and the coating of the tablets with an enteric coating was carried out in accordance with the regulatory documentation. Results and discussion. It has been shown that cultivation on the medium based on enzymatic fibrin hydrolyzate provides a stable growth of the biomass of V. cholerae production strains with a high level of specific activity of antigens. Comparative analysis of the main properties of the finished dosage form of laboratory batches with a commercial batch of chemical cholera vaccine has demonstrated compliance with the requirements of regulatory documentation. The results obtained has led us to conclusion that it is feasible to use the nutrient medium based on enzymatic fibrin hydrolyzate for cultivating production strains and obtaining specific components of the cholera vaccine.

Экологическая оценка объектов окружающей среды при проведении инженерно-экологических изысканий

Purpose: To assess the current ecological condition of the survey site located in the Republic of Karelia and intended for laying a non-public railway track. To analyze the component of the environment — the soil, for compliance with the requirements of regulatory documentation. To establish the category of soil pollution in accordance with Sanitary and Epidemiological Standards and Regulations SanPiN 2.1.3684 and the rules for further use in accordance with SanPiN 2.1.3685. Methods: To assess the degree of soil contamination with heavy metals and organic ecotoxicants, samples have been taken from 14 test sites. Assessment of the degree of soil contamination with heavy metals and benz(a)pyrene has been carried out in accordance with SanPiN 1.2.3685. The assessment of the degree of contamination of soils with petroleum products has been carried out in accordance with a letter from the Ministry of Natural Resources and Environment of the Russian Federation. The assessment of the danger of soil pollution has been carried out according to several indicators (Tables 4.3–4.5 of SanPiN 2.1.3685): 
 –- a complex of metals for public health is made according to the indicator of total pollution (Zc); 
 –- the presence/absence of excess over the established maximum permissible concentrations (MPC) and approximately permissible concentrations (APC). The pollution category is determined by the worst indicator. When establishing pollution categories worse than “permissible”, recommendations have been developed for the further use of contaminated soils (Appendix No. 9 to SanPiN 2.1.3684). Results: As a result of the tests conducted, it was determined that the soil samples collected from the survey area for the construction of a non-public railway section comply with the soil pollution category of “Permissible” and, according to the rules of further usage, fall under the classification of “Unrestricted Use”. Practical Significance: The investigated soils meet all the requirements of the regulatory documentation and can be used without restrictions for the construction of the non-public railway section.

The development of technology and research of quality indicators of nachos from non-traditional raw materials

Currently, due to lifestyle changes, ready-made snacks are a popular and in-demand food product. The use of a large number of snacks leads to the development of a number of negative changes in human health. According to WHO, diseases of the gastrointestinal tract are among the five most common diseases in the world. Most often these diseases affect children, preschool, school age and students. The reason for this may be, first of all, the uncontrolled use of «dry rations», that is, various types of snacks. But snacks can serve as a technological basis for designing innovative food products with excellent consumer characteristics (organoleptic and physico-chemical properties). Therefore, replacing the harmful component of snacks with balanced raw materials, a useful product is obtained. The article describes the technology of nachos obtained by changing the component of the recipe, and with the addition of unconventional raw materials. When preparing nachos, cottage cheese was used to increase its nutritional value. To check the quality indicators of raw materials and finished products, standard visual-sensory and laboratory research methods were used, the results of the studies were described in detail and recorded. To date, the most common fast food product as an alternative to chips has been offered Mexican nachos. Non-traditional raw materials and natural additives were included in the nachos recipe. As an unconventional raw material, cottage cheese was chosen as the main component according to the recipe. Cottage cheese, fat content 4.1%, was obtained from natural cow's milk by fermentation by thermophilic bacteria. The article presents a balanced nachos recipe. According to the calculated recipe, the nachos product was prepared. The organoleptic and qualitative indicators of raw materials and finished products are determined. According to the results of the studies, the lead content in nachos was 0.019 mg/kg, cadmium-0.003 mg/kg, manganese-0.051 mg/kg and iron-0.038 mg/kg. The results obtained comply with the requirements of regulatory documentation. At the same time, the protein content in the finished product was 9.6 g, fat 5 g, carbohydrates 40.9 g, total energy value-249.67 kcal. The results of the study actually showed that there are grounds to recommend nachos on the market as alternates for fast food products.

БЕЗОПАСНОСТЬ ПРИМЕНЕНИЯ ДАЛЬНЕВОСТОЧНОГО РАСТИТЕЛЬНОГО СЫРЬЯ В ПРОИЗВОДСТВЕ ЧАЙНЫХ НАПИТКОВ

In Russian Far East, one of the types of plant raw materials, which exhibits high antioxidant activity, is fireweed (Chamerion angustifolium). We studied the safety of this raw material and a tea drink produced from it. The studies were carried out in the period 2021–2023. Aqueous extracts of Dahurian rose hips (Rosa davurica), cranberries (Vaccinium vitis-idaea) and sea buckthorn (Hippophae rhamnoides) were used as additional raw materials. We herein present the data on microbiological contamination study and hygienic indicators of the safety of used plant raw materials, the duration of safe storage of the finished drink based on fireweed, as well as the compliance of raw materials and products with the requirements of regulatory documentation, including Technical Regulations of the Customs Union “On food safety” 021/2011.

Evaluation of the influence of heat treatment modes of steel 60С2A on its mechanical characteristics and increasing the performance of the generator of hydrodynamic oscillations

The article considers a variant of the drilling head, in which a generator of hydrodynamic oscillations is placed. The main task of research is to select the mode of heat treatment of the resonator material, which ensures an increase in its plasticity. Due to this, an increase in the service life of the resonator is expected as a result of a decrease in sensitivity to stress concentration in the region of defects, including cracks. The main part of the research is related to the determination of the 60С2A steel mechanical characteristics, both in the state of delivery and after heat treatment. With the help of metallographic analysis, the author showed that the proposed options for heat treatment don’t lead to deviations in indicators from the requirements of regulatory documentation. It was determined that the highest value of the plasticity index is realized during heat treatment, which includes annealing + hardening + tempering. A variant of heat treatment of steel 60C2A is proposed, which provides an increase in the service life of the drilling head. Keywords: heat treatment, steel 60С2A, metallographic analysis, tensile test, mechanical characteristics, plasticity index

VETERINARY AND SANITARY ASSESSMENT OF THE QUALITY OF QUAILS` EGGS WHILE USING THE FEED ADDITIVE "VERMICULITE"

The article presents the results of veterinary and sanitary assessment of the quality of quail eggs while using feed additive "Vermiculite". Three groups of birds were formed with 35 birds each. To the feed of the first (control) group the feed additive was not added, to the diets of second and third groups the vermiculite were added in the amount of 3% and 5%. The results of the veterinary and sanitary assessment of the quality and morphometric indicators of quail` eggs which fed by using feed additive "Vermiculite" omply with the requirements of regulatory documentation. The egg weight of the experimental groups is on average 5.5% higher compared to the control group. Also, the average thickness of the eggshell of the third group is 30.7% higher than in the control group. The concentration of calcium in the experimental groups was 3.5% higher and iron was 18.2% higher compared to the control group. In general, the feed additive "Vermiculite" had a positive effect on the total content of mineral elements in quail eggs.

Стандартизация и сравнительный анализ качества таблеток кислоты ацетилсалициловой

Currently, the pharmaceutical industry offers a fairly large number of acetylsalicylic acid (ASA) tablets. Relevant is their high quality, regardless of the manufacturer, the stability of indicators in the process of mass production. Objective: comparative analysis of the main quality indicators of ASA tablets of domestic pharmaceutical manufacturers, improvement of the test «Dissolution». Materials and methods. ASA uncoated tablets, 500 mg, 4 series from two pharmaceutical manufacturers. Evaluation of the quality of tablets and statistical processing of the results of a chemical experiment were carried out according to the relevant methods of the State Pharmacopoeia of the Russian Federation. Results. ASA tablets were standardized according to the following indicators: description, identity, mass uniformity of dosage forms, disintegration, abrasion, quantitative determination of the active substance, dissolution, impurities (salicylic acid). The dissolution profiles of ASA were studied depending on the dissolution medium. Compliance of all samples with the requirements of regulatory documentation was established. A unified test method "Dissolution" for ASA tablets is proposed. Conclusions. The identical composition of the excipients used, the high quality and pharmaceutical equivalence of ASA tablets of different production series and manufacturers have been established.

Analysis of Features of Accumulation of Macro- and Microelements in Grass of Hollow of Five-Lobed Flora of Voronezh Region

Studies of the elemental composition of wild raw materials are relevant and significant due to the high efficiency and biological availability of organometallic forms contained in plants. The purpose of the study is to study the macro- and microelement composition of motherwort herb five-lobed natural phytocenosis of the Voronezh region. Raw materials were harvested during the flowering of the plant in the Voronezh State Natural Biosphere Reserve. The microelement composition of the samples was studied mass spectroscopically on an ELAN-DRC instrument. It was revealed that the content of the microelement complex is 5.8%, 59 elements were determined. Macroelements make up 96.31% of the total elemental composition of the five-lobed hollow grass. The macroelements are based on potassium (more than 30 mg/g), as well as calcium (more than 16 mg/g). Essential trace elements make up 3.08% of the total mineral complex of the five-lobed hollow grass. Among them, the highest content was noted for silicon (more than 1.4 mg/g), iron (more than 0.1 mg/g). The content of regulated heavy metals and arsenic in the grass of the five-bladed dummy complies with the requirements of regulatory documentation. Lead, mercury, cadmium and arsenic account for 0.0008% of the total mineral complex of raw materials. The share of toxic and little-studied elements in the total mineral complex of the grass of the five-lobed dummy is 0.61%. The highest content was observed for aluminum (191.4 g/g), strontium (65.2 g/g), barium (70.3 g/g), titanium (19.2 g/g), rubidium (5.68 g/g). The high ability of the five-lobed puberty grass to accumulate phosphorus, potassium, copper, zinc, cadmium from the soil, as well as a significant opportunity to accumulate calcium, magnesium, molybdenum, nickel, strontium and tellurium, is shown.

Control quality measurements of alpha and beta counter with low back-ground ALBA 2000 v.2.5.6.

The article provides a systematic approach to quality control of measurements of total alpha-and beta-activity using a counter with a low background ALPHA / BETA COUNTING SYSTEM ALBA (mod. ALBA / LLAB) and software ALBA 2000 v.2.5.6. The purpose is to determine the compliance of these objects with the requirements of regulatory documentation. The spectrometry method is based on the physical concentration of radionuclides from the sample volume, measuring the rate of alpha, and beta radiation of the obtained dry residue of the sample, comparing the sample count rate with calibration values of activity, and calculating the total alpha, beta activity of the sample. The primary means of testing is a counter with a low background ALPHA / BETA COUNTING SYSTEM ALBA 200, the lower limit of measurements of the alpha activity, which is 0.02 Bq/l, and beta activity of 0.1 Bq/l, the relative random uncertainty of the measurement result is 60 % with a confidence level P = 0.95. The efficiency of registration on the alpha channel of 43 %, background on the alpha channel of 0,11 imp./min, for a measurement time of 60,000 s, the efficiency of registration on the beta channel of 30 %, background on the beta channel of 1,9 imp./min, for measurement time 60000 s. As a comparison sample for calculating total alpha activity, a sample with alpha radiation, 241Am (geometry 2π), is used. To calculate the total beta activity, a sample of beta-emitter of potassium sulfate with radionuclide is used at 40K (geometry 2π). The weight of the counting sample ranges from 200 to 1000 mg. The activity values are calculated automatically, using the software ALBA 2000, v.2.5.6. Measurement of the total activity of radionuclides in counting samples using the method should be performed only in calibrated geometries. At the same time, the safety requirements, personnel qualifications, and test conditions must be met. Quality control of measurements in the alpha, beta counter ALBA-2000 v.2.5.6. It is carried out in qualitative and quantitative ways.

Qualitative indicators affecting the oxidation of rapeseed and linseed oils

The production of high-quality and safe vegetable oils is an important economic task.This article analyzes the applied aspects of improving the quality and safety of rapeseed and linseed oils. The factors affecting the quality and safety of rapeseed and linseed oils are analyzed. Studies of consumer preferences for rapeseed and linseed oils in the city of Nur-Sultan have been conducted. The results of the analysis showed that the consumer prefers the quality and safety of vegetable oils.Since the composition and technological properties of oilseed raw materials are influenced by many factors, to regulate the production process and improve the quality and safety of vegetable oils, it is necessary to have information to what extent the quality of oilseed raw materials affects the characteristics of the finished product developed on its basis.By applying an individual approach to the selection of parameters of oilseed raw materials, it is possible to ensure traceability of results and processes for each production cycle of vegetable oils, as well as to effectively implement a production control program by the requirements of regulatory documentation and TR CU 024/2011.The article takes steps to improve the current regulatory and technical documentation for vegetable oils. It is proposed to use an approach based on the traceability system of vegetable oils. From these positions, some key features, and aspects of measuring qualitative indicators affecting the oxidation of rapeseed and linseed oils are considered, and the creation of a national standard «Traceability in the production chain of vegetable oils» is justified. The methodology and methods of research are determined by a systematic approach that allows us to study and identify the relationship between the processes of processing, storage, transportation, and sale of vegetable oils.

MODELING OF THE INFLUENCE OF THE CHEMICAL COMPOSITION AND STRUCTURE ON THE MECHANICAL PROPERTIES OF ALLOY ROLLED PRODUCTS

At present, carbon steels alloyed with chromium, molybdenum and vanadium are widely used in industry and mechanical engineering. It is known that the complex of mechanical properties of metal products depends on the number of alloying elements and the mode of heat treatment. With the help of mathematical and physico-chemical modeling, dependences were constructed that allow to predict the level of mechanical properties of alloy steel. The ranges of the number of alloying elements for 31CrMoV9 steel are defined, which guarantee compliance with the requirements of regulatory documentation beyond the strength and elongation. Metallographic studies allowed to establish the influence of heat treatment parameters on the structure of the studied alloy steel. Recommended cooling rates, which allow to obtain a more acceptable structure for further processing with the required mechanical properties.

On compliance with regulatory requirements for tea labeling

The paper analyzes the labeling of green tea samples for compliance with the requirements of regulatory documentation. Violations of tea labeling for a number of legal documents regarding the completeness and correctness of labeling data have been found.

NUMERICAL VALUES OF REJECTIVE AND REFERENCE INDICATORS OF ERGONOMIC PROPERTIES OF SPACE OF SUITABLE APARTMENTS

According to the general algorithm of the first theoretical stage the basic principles of formulation of reference, basic and defective values of indicators of properties of town-planning quality of life and their categories according to requirements of regulatory documentation in the field of construction and results of expert estimations which in turn give possibility of definition of numerical values and substantiation of characteristics defective, reference and basic indicators of simple properties of a residential building, in particular the properties of ergonomics of the space of ancillary premises of apartments.
 Categories and methods for determining the defective, basic and reference indicators of a residential building according to the content of the relevant properties are divided into: 
 - without physical units of measurement and regulation by normative documentation;
 - without physical units of measurement (or with complex units of measurement) with regulation by normative documentation;
 - with physical units of measurement without regulation by normative documentation;
 - with physical units of measurement and regulation by normative documentation.
 Based on the analysis of regulatory documentation, documentary data and expert assessment, the numerical values and justification of the characteristics of defective, reference and basic indicators of simple properties of ergonomics of the space of ancillary premises of apartments are determined.
 Further research will focus on the definition of numerical values and substantiation of the characteristics of defective, reference and basic indicators of the external environment of the house, in accordance with the developed range of properties of urban quality of life.

APPLICATION OF MODELING IN THE QFORM VX 8.2 SOFTWARE PACKAGE FOR DETERMINATION OF RATIONAL COOLING SPEEDS OF RAILWAY RIMS

The tests were performed on ER7 steel according to EN 13262. Based on the hardenability test (GOST 5657) by the method of end hardening (Jomen) the distance from the surface from which unilateral cooling was performed, where the hardness met the requirements of regulatory documentation for wheels of test steel, and the distance where the formation of needle structures, including bainite and otmanshtette, no longer took place. Simulation was applied in the software package QForm VX 8.2, as a result, a model was developed, for the adaptation of which the results of the experiment were used. Confirmed the high convergence of the results of the calculation and the experiment. At the same time, the model allowed to obtain an instantaneous cooling rate in a form that is more in line with the physical meaning of the process and to avoid the scatter of actual values associated with the discreteness of data capture. It is established that the instantaneous cooling rate changes in the process of continuous uniform supply of the cooler. The developed model can be used to build thermokinetic diagrams under continuous cooling and to develop recommendations for heat treatment modes to achieve the specified mechanical properties under a certain structural state.

Development of recommendations on cooling rates of railway wheels with the use of modeling in the software package qform vx 8.2 for the formation of a homogeneous ferritic-perlite structure

The tests were performed on ER7 steel according to EN 13262. Based on the hardenability test (GOST 5657) by the method of end hardening (Jomen) the distance from the surface from which unilateral cooling was performed, where the hardness met the requirements of regulatory documentation for wheels of test steel, and the distance where the formation of needle structures, including bainite and otmanshtette, no longer took place. Simulation was applied in the software package QForm VX 8.2, as a result, a model was developed, for the adaptation of which the results of the experiment were used. Confirmed the high convergence of the results of the calculation and the experiment. At the same time, the model allowed to obtain an instantaneous cooling rate in a form that is more in line with the physical meaning of the process and to avoid the scatter of actual values associated with the discreteness of data capture. It is established that the instantaneous cooling rate changes in the process of continuous uniform supply of the cooler. The permissible range of cooling rates of the surface and central sections of the wheel rim during accelerated cooling of ER7 steel is determined. The data can be used to improve the heat treatment modes of railway wheels of current production in order to achieve a high set of mechanical properties both with the existing cooling technology and with differentiated cooling on the modernized equipment of the thermal section of the wheel shop. The developed model can be used to build thermokinetic diagrams under continuous cooling and to develop recommendations for heat treatment modes to achieve the specified mechanical properties under a certain structural state.

Analysis of the environmental tolerance and safety of <i>Rosa lupulina</i> Dubovik in the anthropogenic environment

The influence of technogenic pollution on the dynamics of the content of biologically active substances and the antioxidant activity of the previously poorly studied species Rosa lupulina Dubovik was studied for the first time. The compliance of R. lupulina fruits growing in the Donbas with the requirements of regulatory documentation was evaluated. The relationship between the content of heavy metals (lead, cadmium, mercury) in the fruits of R. lupulina and the soil on which they grow was studied. The environmental safety of raw materials was evaluated.