Jurnal Oʻzbekiston Respublikasi Oliy attestatsiya komissiyasi tomonidan tasdiqlangan yoʻnalishlar boʻyicha doktorlik dissertatsiyalarining asosiy ilmiy natijalarini chop etishga moʻljallangan.
| Nashriyot | Қарши муҳандислик-иқтисодиёт институти |
|---|---|
| Shahar | Qarshi |
| ISSN | 2181-4732 |
| e-ISSN | 2181-4015 |
| Tashkil etilgan | 2024 |
| Maqolalar soni | 244 |
| OAK holati | Ro‘yxatda |
В статье аналитически рассматриваются износы от абразивных частиц движущегося по поверхности лемеха, имеющие различные формы, при этом определяется зависимость износа от их скорости…
Мақолада тупроқни полиз экинлари экиш учун тайёрлайдиган комбинациялашган агрегат юмшаткичларининг ўзаро жойлашиши асосланган.
The article deals with the modeling of the process of saturated-unsaturated filtration in layered soils using a two-dimensional hydraulic model in the aeration and saturation zone. At the same time, for modeling mass…
The article describes the cold resistance of a lemon tree, the design and geometric parameters of a semi-cylindrical buried heliolimonarium, as well as the device and principle of operation of an underground heat…
The article deals with the problem of flow division in a channel with a lateral outflow. The shape of the bypass channel is recommended to ensure smooth flow. Solving issues with water distribution along the channel…
Light absorption on the parameters of solar cells with the ZnO structure: Al/i-ZnO / CdS/CuIn1-xGax (S, Se) 2 / Mo after reverse bias. Analysis of the experimental data showed that the effect of light absorption is…
The article deals with the problem of finding hidden ruls by processing data using an intelligent system developed on the basis of artificial intelligence methods, as well as identifying wheat varieties with high grain…
The article provides a dynamic analysis of compound gear cylinders found in mechanisms. It is known that in order to reduce the mutual deformations of the working bodies in the mechanisms and increase the productivity…
This article highlights the application of a system for automated control of grain and air moisture in storage, presents a sensor configuration with an integrated basic microcircuit designed to measure moisture content…
В данной статье рассмотрено одно из приоритетных направлений для электроприводов с асинхронным электродвигателем, питаемым от преобразователя частоты. Для эффективного использования электрической энергии, подводимой…
This article presents the methods of connecting conveyor belts used in mining enterprises, developed new methods for connecting conveyor belts. In addition, the disadvantages of the current connection method are also…
The article gives a scientifically based method of rationing the consumption of electricity for the smelting of a ton of steel. This technique allows you to correctly analyze energy performance and assess the level of…
The article studies the structure-texture, lithological composition of rocks in Sarikul and Khodjadik deposits, evaluates the physical and mechanical properties and properties of rocks and provides a scientific basis…
Methodological approaches have been developed to assess the residual life of steel pipes. .An analysis of the operating conditions of gas distribution system facilities and existing approaches to assessing the bearing…
The main objective of the paper consists to compare and analyze the currently existing technologies for capturing carbon dioxide from the combustion products of mini-CHP plants operating on local fuels. The analysis is…
Currently, in the conditions of the formation and development of the digital economy in the world, digital information is considered the main factor of production in all spheres of socio-economic activity. Demands for…
The article describes the implementation of the oil pumping process using the finite method of determining the saturation function valuyes in the issuye of two-phase filtration, appliyed to the problem of computer…
In order to optimally supply the population with water, the issue of applying linear programming methods for determining and using water reserves is considered in the work. A mathematical model of the problem was…
The article deals with the modeling of surface water dynamics in shallow water models. When irrigating crops along furrows, in the process of movement of shallow water along the irrigation furrow, erosion or silting…
The dependence of the amount of energy obtained with the help of solar cells on the illumination of the surface of the solar cell have been studied in this work. It was shown using the created device that the smaller…
The article presents an analysis of the processing of municipal solid waste by anaerobic fermentation. A substantiated analysis of the formation of energy efficiency and improvement of the sanitary and environmental…
Solar simulators with one or more light sources (portholes) are used for solar cell testing. Analysis of the experimental data showed that the effect of light absorption is opposite to the effect of reverse bias and can…
This article presents the relevance of the use of pyrolysis plants designed for processing biomass and obtaining liquid, solid and gaseous fuels from it, characteristics, types, elemental composition and physical…
This article presents the results of studies carried out on an experimental installation of a combined solar-biogas plant, on the basis of energy analysis, the energy consumption of a biogas plant is estimated, the…
The article considers the definition of heat losses of insolation passive solar heating systems. The calculation expressions for determining heat losses in a building with a direct solar heating system through…
This article is devoted to the experimental study of the temperature regimes of the solar pond in the climatic conditions of the south of Uzbekistan. Research work in the experimental solar pond was carried out in…
Based on this article the parameters of the experimental device have been presented for obtaining alternative fuel from biomass by the heliopyrolysis method. In addition, in this article, the principle scheme of the…
A mathematical model of heat exchange during cooling of a soil massif using a natural accumulator of cold soil (GANC) has been developed, the results of modeling an underground storage facility for storing fruits and…
The article presents information about the course of the process of concentrating the energy of solar radiation, depending on the properties of the primary source of radiation - the Sun, and the properties of the solar…
The paper considers the efficient use of solar energy for heat supply of agricultural buildings and proposes an analytical method for calculating the air temperature at the outlet of a water heat accumulator in solar…
This article presents the results of an experimental study of heat transfer processes in the laminar flow of hot water moving through pipes of a warm floor with energy saving using solar energy in a water floor heating…
This article presents the relevance of desalination of salt water using solar energy, analysis of the design of existing solar desalination plants, methods for improving the efficiency of solar desalination plants and…
This article proposes the installation of baffle-turbulator type intensifiers in flat solar air collectors. Theoretically investigated the temperature regime in the solar air collector when installing 2, 3, 4 and 8…
A large negative magnetoresistance phenomenon has been observed at room temperature by forming magnetic nanoclusters of manganese doped atoms in silicon by low-temperature diffusion. It has been shown that the negative…
The article presents data that during the operation of synchronous motors at metallurgical enterprises, they give reactive power to the electrical network when switching to overexcitation mode, which, as a result…
In the technological processes of the production of the agro-industrial complex, mechanisms with the translational movement of the working bodies are used. For such mechanisms, electric drives with linear asynchronous…
This paper discusses the issues of individual reactive power compensation in VFD and soft start devices, as well as the effective use of VFD devices used in the control of asynchronous electric motors.
In this article the mathematic model of the problem of optimization of daily mode of electric power system which have thermal (TPP), hydro (HPP), solar (SPP) and wind (WPP) power plants is presented. The optimality…
The article presents the results of the studyresults of research the effectiveness of applying a genetic algorithm of optimization in solving the problems of planning the short-term modes of modern electric power…
This article highlights the wide use of asynchronous electric drives, the control structure of a frequency-controlled asynchronous electric drive, the results of a laboratory stand for the study of an asynchronous…
The article discusses the impact of electricity quality on energy waste. In particular, the components of losses and their causes were studied. In non-sinusoidal and asymmetric modes, the occurrence of additional losses…
The article gives materials in place of existing contact devices of electrical receivers to connect to the network and you can use non-contact devices, given materials in comparison with the difference between them and…
This article is based on the use of time-varying energy tariffs to increase the efficiency of consumed electricity and reduce energy consumption costs. Analysis of the tariff system in the electric power system of the…
The possibilities for constructing pole-changing windings with a ratio of poles 3:4 and improved electromagnetic properties have been investigated in this paper. The results of experimental research work on two-speed…