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 |
The article actualizes the economic meaning of digital innovations, which are themain element of the modern market economy. It is shown that the innovative content of digitaltechnologies is the main paradigm of economic…
This article aims to provide recommendations for the selection and production of optimalrepeat predecessor crops that ensure high-quality winter wheat harvest by preserving and increasing theproductivity of saline…
The аrticle is devoted to the cаlculаtion of a hydrаulic shock аbsorber with аdiаphrаgm installed at the end of а pressure pipeline. Theoreticаl solutions of hyperbolic type waveequations for а polytropic process (n =…
In the article, the one-year monitoring results of the 70kW on-grid solar station (SS)in the city of Termez, located in the southernmost part of Uzbekistan, are presented. Annual, monthlyand daily energy production…
The article provides an analysis of energy-efficient operating modes and parametersof cascade pumping stations.The operating mode of pump stations in irrigation systems is determined by a number ofparameters, including…
The article discusses the issues of the efficiency of solar energy supply to electricmotors of pumping units used in irrigation systems in different countries of the world. A methodologyfor calculating modern indicators…
In modern conditions of intensive increasing the electricity consumption in all spheresof human activity, limited hydrocarbon fuel reserves, as well as the severity of environmentalproblems in the energy sector require…
In traditional small-capacity pyrolysis devices, direct burning of bio- mass, electricheating or burning of alternative fuels are used to dry raw materials (biomass) loaded into thereactor, and heat is used for private…
This article compares the parameters obtained in spring and summer seasons ofphotothermal battery (PV) and photoelectric battery (PVT) with a new type of cooling system. Solarradiation on the surface of the PVT…
This article presents the results of research work on a modernized solar drying plantwith indirect heat pipes and natural air ventilation. The dependences of temperatures, moisturecontent of the steam-air mixture and on…
Maqolada quyosh energiyasi bilan ishlaydigan tuxum inkubatorining issiqliktalabi oʻrganib chiqilgan. Bunda quyidagilar amalga oshirildi: barqaror namlik va harorat holati,inkubator materiallari doimiy issiqlik…
Heating systems of residential buildings, including typical rural houses, are energyintensive consumers of thermal and electrical energy. Research shows that the energy consumptionfor heating 1.0 m² of living space in a…
The global transition to renewable energy sources has led to a dramatic increase inresearch and development in solar energy technologies. Among them, flat solar water heatingcollectors are attracting a lot of attention…
It is known that the demand for energy in the world is increasing, traditional fuelresources are not evenly distributed on the globe, and the negative impact of carbon dioxide gaseson the environment is high when using…
Increasing hydrocarbon productivity through the rational use of gas and gascondensate fields is becoming urgent. By conducting a thermometric study on gas wells based on theobtained data on temperature distribution, it…
The article describes the results of the application of rank paleotectodynamicanalysis methods for the first time to study conditions of formation and age ratio of tectonic structuresof different intervals of…
Today, due to the increase of hard-to-extract natural gas reserves in the world, as a result of the liquefaction of productive layers, the cases of the decrease in the flow rate of wells are increasing year by year…
The problem of evaluating the risk, efficiency and quality of use in preschooleducational organizations, including the goals and tasks of outsourcing services, is one of the mosturgent issues at the moment, because…
The main task of the design of earthen channels is to calculate the dimensions of thestable channel shape in which irreversible deformation of the channel cross-section does not occur.This article provides information…
In this аrticle, the need to evаluаte humаn resources in stаte аdministrаtion bodies isstudied from а scientific аnd prаcticаl, scientific-theoreticаl point of view. The mаin аspects of humаnresources аssessment in…
The problem of increasing its economic efficiency based on the establishment of afruit and vegetable cluster cooperation system in current agricultural practice is the economicefficiency of fruit and vegetable…
Geothermal energy sources are widely used as a renewable energy source in buildingheating and cooling systems. The thermal characteristics of underground heat exchange devices arecrucial for the efficient operation of…
The fact that the world's energy resources are declining and their prices are regularlyrising shows the importance of using energy efficient technologies for their rational use in the future.The authors analyzed the…
The use of solar photovoltaic devices is becoming increasingly important instabilizing energy security and solving environmental problems. Particular attention is paid to thescientific substantiation of factors…
The article reviews current research and developments in the field of energymanagement and storage in the context of photovoltaic (PV) systems. The focus is on energy storagemethods, such as electrical and thermal…
The ubiquity of websites across all sectors has led to a surge in demand for theirservices. Consequently, there's been a notable expansion in scientific inquiry to enhance serviceefficiency to meet the escalating needs…
The article discusses the use of adaptive filters in modern modeling of dynamiccontrol objects. Presents a type of adaptive filtering of digital signal processing in modern electronicequipment. Adaptive signal…
Research in the field of hydrodynamic calculations of the flow of gas-liquid mixturesin pipelines has been carried out by many researchers. They theoretically and experimentally studiedvarious hydraulic and hydrodynamic…
This article analyzes experimental studies and their results on increasing the energyefficiency and reliability of electric vehicles.Experimental studies of direct start-up of the electric drive and start-up through a…
Development of technical solutions for increasing energy efficiency in gas processingenterprises, determining the potential of secondary energy resources and using them in the energybalance of the enterprise are urgent…
This paper explores the traffic flow at the intersection of the ring road of Tashkentcity with Bogishamol Street. The study focuses on the movement of traffic and its dynamic indicators,such as intensity, density, and…
In this research work, the energy efficiency of the introduction of heat pumps into theenergy supply systems of buildings in the conditions of Karshi city was evaluated based on thethermodynamic cycle of the heat pump…
In the world, there are strong trends in the use of renewable energy sources (RES) inthe creation of energy-efficient systems of management of heat and fuel-energy resources.In this article, by utilizing the heat of…
The focus is on the low-sulfur gas deposit at the Uchkir gas field, which has been keptin conservation due to the absence of desulfurization facilities. The gases from the hydrogen sulfidecarbon dioxide-hydrocarbon…
The presence of sulphate-repoding bacteria (SRB) in an oilfield system can have anegative impact on system performance, causing corrosion, clogging and deposit formation.Therefore, controlling and preventing the growth…
The article describes the neotectonic maps of Southwest Gissar based on rankanalysis methods. It is noted that all previous tectonic maps represent an interference pattern ofoverlapping elements formed as a result of…
In this work a correlation between the duration of larval period and signs of eggslaying of 6 races and 4 selectional lines of silkworm was studied. Races and lines were divided intogradations according to the speed of…
Considered one of the most widespread ancient crops in the world, soybeans arecurrently grown in 91 countries covering 118 million hectares. Main producers: USA 70-90 milliontons, Argentina 50 million tons, China 20-40…
Existing systems in the field of cooking oil production in our republic are designed toprocess the large quantities of raw materials, predominately of one type. Black cumin seeds cannotbe processed. Production…
Currently, one of the problems facing the Uzbekistan Railways JSC is that trainsbeing accepted into the station from the lack of empty station tracks are waiting in front of theentrance traffic lights or at neighboring…
Currently, in world practice, scientific research and design work is being carried outon the development and creation of passive solar heating systems. If the heat storage wall of a passivesolar heating system consists…
Despite the presence of large rivers such as Amudarya and Syrdarya, waterdistribution problems in Uzbekistan are aggravated by the large demand for water from agricultureand the drying up of the Aral Sea. The shift to…
The article provides information on a method for determining friction forces in disctensioners of a sewing machine. This article presents calculation schemes for the implementation ofplate and spring structures, graphs…
Under conditions of steady motion, the resulting pressure losses due to friction alongthe length cause a number of characteristic features of the movement of a real gas compared to themovement of incompressible liquids…
In the article, the ordered values of the quantitative features describing the objects ofsamples of soft wheat varieties are divided into intervals based on the compactness check. Also, theissue of solving the problem…
Today, there are several types of photovoltaic cells on the commercial market, andtheir efficiency in natural conditions varies depending on climatic factors. Taking into account thatthe weather conditions of different…
One of the main tasks of salt transfer research is the selection of a mathematicalmodel that corresponds to given conditions based on the study of the structural features of individualhorizons of the studied rock…
The main goal of introducing gasification plants is to reduce harmful atmosphericemissions from direct combustion of coal, as well as to increase the service life of process equipment.The relevance of the work lies in…
Artificial Intelligence (AI) is transforming agriculture, integrating into efficientirrigation systems and offering solutions for optimizing water usage, forecasting its demand,monitoring irrigation systems, analyzing…
Using a solar simulator, a photoelectric-thermal system integrated into an open-loopair building with a working fluid was experimentally investigated. Options for building-integratedphotovoltaic/thermal systems and…