Actual problems of Mathematics, Physics and Mecanics
Actual problems in modern technical sciences
Actual problems of Natural Sciences
Actual problems of history, philosophy and sociology
Actual problems in modern tourizm and economics
Modern problems of Philology and Linguistics
Actual problems in modern pedogogy and pshychology
Actual problems in modern agriculture
Actual problems in modern art and architecture
Actual problems of Natural Sciences
SYNTHESIS OF SODIUM 1,2-PHENYLENEDI (CARBOXYMETHYLENE) CITRATE
The main goal of the article is to carry out pyrocatechin chloracetylation reactions and syntheses based on it. Also, modern physico-chemical experimental research methods such as spectroscopic methods (IR-, UV-, mass-), thinlayer chromatography (TLC) were used for the structures of the obtained...
3 December 2023, 21:50
THE IMPORTANCE OF WATER-SAVING AGROTECHNOLOGIES IN AGRICULTURE IN WATER-SCARCE CONDITIONS
This article the importance and useful features of modern watersaving irrigation methods, such as mulching agro technology, as well as drip irrigation, sprinkler irrigation, sub-irrigation, based on long-term preservation of soil moisture, are covered. The results of the experiment carried out on...
3 December 2023, 21:50
HIGH-TECH FREE ECONOMIC ZONES OF UZBEKISTAN
This article discusses the establishment of high-tech free economic zones (hereinafter SEZs) in the Republic of Uzbekistan. In the formation and development of high-tech SEZs, which are gaining importance in the economy of our country in the following years, a number of opinions are presented about...
3 December 2023, 21:50
GEOGRAPHY OF CHEMICAL TEXTILE FIBER PRODUCTION
The article provides a brief description of the types of chemical fibers used in the textile industry, the volume and composition of production in the world, as well as the geography of production and export....
3 December 2023, 21:50
EFFECTIVENESS OF DEVELOPMENT ENVIRONMENTAL COMPETENCIES IN STUDENTS IN LEARNING THE SUBJECT OF LIFE SAFETY
In the development of environmental education competencies in students, the history, culture, nature of our country, its modern life, the value, integrity and diversity of the surrounding world, awareness of one's place in it, ensuring effective and safe interactions in society a scientific...
15 November 2023, 21:50
NUMERICAL MODELING OF THE PROBLEM OF JOINT FILTRATION OF AN OIL-WATER SYSTEM OF IMMISCIBLE LIQUIDS
This article discusses a mathematical model of the process of piston displacement of one liquid by another in porous media, with an improved mathematical model of the oil-water filtration process taking into account the mobile boundary of the phase interface. A computational algorithm was developed...
15 November 2023, 21:50
AGRICULTURE IS A PRIORITY SECTOR OF THE NATIONAL ECONOMY: PROBLEMS AND SOLUTIONS
This article analyzes the role of the republic’s agriculture in the national economy. Attention is also paid to the reforms being implemented today in agriculture. Based on the content of the Agricultural Development Strategy of the Republic of Uzbekistan for 2020-2030, analytical data was...
15 September 2023, 21:50
A NEW MODEL FOR CALCULATING THE TOTAL CURRENT IN A TUNNEL DIODE
In this work, a formula is derived for calculating the total current generated in a tunnel diode under the influence of a microwave field and a magnetic field. In addition, the dependence of the total current of the tunnel diode on the total power induced by the microwave field is theoretically...
15 September 2023, 21:50
EFFECT OF MAGNETIC FIELD ON VOLT-AMPERE CHARACTERISTICS OF P-N JUNCTION DIODES
The change in the current-voltage characteristics of diodes with a p-n junction is compared under various external influences. The reason for the low current at high voltages on the diode is explained precisely under the action of a magnetic field. An increase or decrease in the width of the volume...
15 September 2023, 21:50
EVALUATION OF THE REACTION OF UREA WITH OSUBSTITUTED AROMATIC AMINES USING QUANTUM CHEMICAL CALCULATIONS
In our research, quantum chemical calculations of the ability of osubstituted aromatic amines to react with urea were carried out in the SPK-DZP basis set of the GAMESS program, and compared with experimental results, the range of amines' reactivity, mechanism and relative activity was...
15 September 2023, 21:50