This paper investigates the structural changes in the turbulent motion of an incompressible fluid in the hydrodynamic entrance region of plane-parallel pressure motion. Movement in pressure hydromechanical systems usually occurs in a turbulent regime. Studying the patterns of changes in hydrodynamic parameters under conditions of stationary turbulent pressure motion in the inlet region is a very urgent task. The study was carried out on the basis of boundary layer equations. Taking into account the dependence of changes in the kinematic viscosity coefficient that occur between layers of fluid, a boundary value problem was formed. Analytical solutions have been obtained that make it possible to obtain patterns of changes in velocity and pressure in any effective flow section. Based on the general conclusions of the study, solutions were found for two cases: a) the velocity of the fluid entering the cylindrical pipe is constant; b) the velocity of the incoming fluid has a parabolic distribution. For these cases, using computer analysis of the data obtained, general graphs of velocity changes were constructed in various sections along the hydrodynamic entrance region. These graphs, which display the change in velocity along the entire length of the inlet, make it possible to obtain the velocity of fluid movement at any point along the inlet length and estimate the length of the transition zone. The results obtained are among the least studied issues of classical fluid mechanics and are of important theoretical interest. The results obtained are applicable for the correct construction of the hydrodynamic entrance region of machinery. A calculation formula has been obtained to determine the length of the hydrodynamic inlet region

Food security is one of the main goals of the agrarian and economic policy of the state. It forms the vector of movement of any national food system towards an ideal state. In this sense, ensuring food security is an ongoing process. At the same time, to achieve this, there is often a change in development priorities and mechanisms for the implementation of agricultural policy. The definitions of food security formulated in the Rome Declaration on World Food Security (1996) contain the following main areas: physical access to sufficient, safe and nutritious food, economic access to food of adequate quantity and quality for all social groups of the population, autonomy and economic independence of the national food system, reliability, sustainability, which means that the national food system is developing in an expanded reproduction mode. A proper food policy is seen as a system of measures aimed at a systematic and effective solution not only to the problems of production, foreign trade, storage and processing, but also to the equitable distribution of basic foodstuffs, as well as the social development of rural areas. Taking into account the importance of ensuring a high level of food security for the Republic of Armenia and the fact that there is a strategy or doctrine for ensuring food security, a comprehensive, methodological development of the methodology for food production, analysis of availability and definition of food was carried out. security in RA. For this, a system of indicators, mechanisms for assessing food safety, assessment criteria and a definition model were developed.

Complex objects, characterized by intricate operations, interconnected components, and dynamic behaviors, pose unique challenges for digital control systems. This article highlights the importance of automated digital control systems in managing these complexities, emphasizing their crucial role in ensuring safety, reliability, and efficiency. Addressing these challenges involves dealing with system complexity, non-linear dynamics, uncertainties, real-time requirements, data quality, and the need for optimization. Furthermore, ensuring regulatory compliance, safety, scalability, energy efficiency, and cybersecurity adds additional layers of complexity. This article explores the challenges faced by digital control systems when dealing with complex objects-systems with intricate operations and interconnected components. It emphasizes the vital role of automated digital control in ensuring safety, reliability, and efficiency in such scenarios.

The article presents the physical, mechanical (strength, density), and chemicalcharacteristics of complex M100 water-resistant mortar compositions, which include crushedlimestone (0.16–1.25 mm) and granite-crushed sand. Additionally, stone masonry mortar mixtureswith a grain size of up to 5 mm have been developed using local raw materials for the restoration ofwall constructions in building structures.The relationship between the density and chemical stabilityof the hardened samples was determined using the results of complex research on the structuringprocess of the test samples obtained with the modifiers used to improve the workability of theprocessed lime mortars.