THERMAL AND CHEMICAL PROPERTIES OF LIMESTONE FROM THE “UCH O‘JAQ” DEPOSIT
This article examines the thermal and chemical properties of limestone from the “Uch o‘jaq” deposit. During the study, the samples were analyzed using thermographic, X-ray phase, and chemical methods. The results showed that the limestone from this deposit is rich in calcite and also contains...

Actual problems of Natural Sciences / 2025 / August

Boyzhanov Islom, Mukhamedbayev Abduvali, Duschanov Sanat

Volume 9 | Issue 8

3 August 2025, 21:50

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EFFECTS OF ANNEALING TEMPERATURE ON MECHANICAL PROPERTIES OF THE STUDIED STEELS
This article examines issues related to the mechanical properties of steels produced by the method of casting on lost foam models. It is shown that the mechanical properties of steels produced by the method of casting have a number of shortcomings in terms of stress formation, sulfur and phosphorus...

Actual problems in modern technical sciences / 2025 / August

Egamberdiyev Bakhodir, Norkhudjayev Fayzulla, Mukhamedov Azad

Volume 9 | Issue 8

3 August 2025, 21:50

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FINAL DEOXIDATION OF COPPER AND BRONZE ALLOYS
This article discusses the processes of final deoxidation of copper and bronze alloys and their reaction mechanisms. The role of deoxidizers such as phosphorus, aluminum, and manganese, their effectiveness in reducing oxides in the metal, and the development of technological processes are...

Actual problems in modern technical sciences / 2025 / August

Ubaydullaev Mamasidik Makhammatsolievich, Abdurafikov Bekhzod Anvarjon Ugli, Rakhimboev Sherzodjon Ikrom Ugli

Volume 9 | Issue 8

3 August 2025, 21:50

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CAUSES AND EFFECTS OF WEAR IN MILL AND PUMP COMPONENTS AND METHODS TO IMPROVE THEIR WEAR RESISTANCE
This article examines the causes and consequences of wear occurring in the internal parts of mills and pumps, which are widely used in industrial processes, as well as modern methods for increasing durability. The influence of mechanical, chemical, and thermal factors is highlighted, and the...

Actual problems in modern technical sciences / 2025 / August

Rakhimboev Sherzodjon Ikrom Ugli, Ubaydullaev Mamasidik Makhammatsolievich, Abdurafikov Bekhzod Anvarjon Ugli

Volume 9 | Issue 8

3 August 2025, 21:50

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DEVELOPMENT OF MODERN TECHNOLOGY FOR OBTAINING VOLFRAM VI OXIDE POWDER JSC “UZBEKISTAN TECHNOLOGICAL METALS COMBINATE”
This article highlights the scientific and practical research conducted at the “Uzbekistan Metallurgical Technology Plant” JSC on the modern technology for producing tungsten VI oxide powder. The research investigated the possibilities of hydrometallurgical processing of tungsten cakes separated...

Actual problems in modern technical sciences / 2025 / August

Parmonov Sarvar, Parmonov G‘ayrat

Volume 9 | Issue 8

3 August 2025, 21:50

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CORRELATING PHASE, MORPHOLOGY, AND STOICHIOMETRY OF OXYGEN ANNEALING FOR CRYSTALLINE VO₂ THIN FILMS
This study investigates the effects of annealing atmosphere (air vs. oxygen) and temperature on the properties of RF-sputtered VO2 thin films. XRD analysis revealed that annealing in an oxygen atmosphere preferentially enhances the formation of the monoclinic VO2 phase over V2O5 and reduces the...

Actual problems in modern technical sciences / 2025 / August

Bunyod Allabergenov, Farangis Allabergenova, Uchqun Kutliev, Sungjin Kim

Volume 9 | Issue 8

3 August 2025, 21:50

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EVALUATION OF SENTIMENT ANALYSIS DATASET USING MACHINE LEARNING AND DEEP LEARNING MODELS
This paper introduces the results that were obtained after conducting the experiments. To create the baseline models for Uzbek sentiment analysis, it has been chosen various classifiers from different families, including different methods of Support Vector Machines (SVM), and recent Deep Learning...

Actual problems of Mathematics, Physics and Mecanics / 2024 / August

Matlatipov Sanatbek Gayratovich

Volume 8 | Issue 8

3 August 2024, 21:50

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PLASMA PARAMETERS IN NANOSECOND-LASER-PRODUCED SILICON AND INDIUM
We study the properties of laser plasma at normal atmospheric pressure, which is induced on the surface of silicon and indium under the action of an Nd: YAG laser beam with a wavelength of 1064 nm and a pulse duration of 10 ns using the method of laser spectroscopy. The electron density in the...

Actual problems of Mathematics, Physics and Mecanics / 2024 / August

Vapayev Murod Ergashovich

Volume 8 | Issue 8

3 August 2024, 21:50

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TEACHING STUDENTS THROUGH MICROTEACHING IN ENGLISH METHODOLOGY LESSONS
This article discusses the evolution and significance of microteaching in teacher education globally. It emphasizes the method’s roots and principles, highlighting its role and importance in refining teaching skills within a controlled environment. The focus is on its impact on English language...

Actual problems in modern pedogogy and pshychology / 2024 / August

Matyakubova Xolida Maksudovna

Volume 8 | Issue 8

3 August 2024, 21:50

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PEDAGOGICAL TECHNOLOGIES OF COMMUNICATIVE SKILLS DEVELOPMENT IN FUTURE MUSIC TEACHERS
Pedagogical technologies aimed at developing communicative skills in future music education teachers are analyzed in this article. In the modern educational process, the ability of teachers to establish effective communication is an important component of their pedagogical activity. The article...

Actual problems in modern pedogogy and pshychology / 2024 / August

Tursunaliyeva Mukhlisaxon Vokhidjon Kizi

Volume 8 | Issue 8

3 August 2024, 21:50

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