Volume 9 » Page 11 » KhorezmScience.uz

INVESTIGATION OF IMPLANTATION OXYGEN IONS INTO THE SURFACE Mo(001)

We have modelled the process of ion implantation at low angles of incidence on the Mo (001) surface with an initial energy of 1-5 keV. The pair collision approximation method was used in the modelling process. We obtained the dependence of the number of implanted O ions on Mo (001) at different...

Actual problems in modern agriculture / 2025 / July

Allayarova Gulmira, Kutliev Uchqun, Ismoilov Jaloladdin

Volume 9 | Issue 7

3 July 2025, 21:50

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FEM ANALYSIS-STRUCTURAL AND DYNAMIC, DISCUSSIONS AND RESULTS OF THE MODIFIED MECHANISMFOR ADJUSTING BASE OF THE TRACTOR

This article investigates the updated mechanism for modifying the base of a variable-base tractor, which plays a crucial role in cultivating sloped rainfed agricultural lands. The study identifies potential loads, magnitudes (compression, stress, shear, safety), and force directions that may arise...

Actual problems in modern agriculture / 2025 / July

Artikov Makhmud Sultonboevich

Volume 9 | Issue 7

3 July 2025, 21:50

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IMPROVING THE STABILITY AND MANEUVERABILITY OF THE VARIABLE BASE TRACTOR

Several types of variable wheelbase tractors are available in Uzbekistan. In this article, the mechanism for changing the wheelbase of a variable base tractor using a pendulum mechanism has been theoretically improved, and its stability and maneuverability have been enhanced. The structural...

Actual problems in modern agriculture / 2025 / July

Artikov Makhmud Sultonboevich

Volume 9 | Issue 7

3 July 2025, 21:50

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DYNAMIC ANALYSIS OF THE FRAME BETWEEN TWO AXLES OF THE VARIABLE BASE TRACTOR

This article examines the structural strength of the main frame of a variable-base tractor modification, which plays an important role in cultivating sloped lands irrigated by rainfall as a means to mitigate the negative impacts of water scarcity in Uzbekistan’s agriculture. The potential loads and...

Actual problems in modern agriculture / 2025 / July

Artikov Makhmud Sultonboevich, Khusainov Bakhtiyor

Volume 9 | Issue 7

3 July 2025, 21:50

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THE IMPACT OF ATTAGENUS SMIRNOVI ON CULTURAL AND DOMESTIC ASSETS: CHALLENGES AND SOLUTIONS

The study examines the destructive effects of Attagenus smirnovi (the brown carpet beetle) on both cultural heritage sites and household assets. Special attention is given to historical monuments and museum collections, where the beetle causes significant damage to organic materials such as wool,...

Actual problems of Natural Sciences / 2025 / July

Atajanova Shirin Masharibovna, Abdullaev Ikram Iskandarovich

Volume 9 | Issue 7

3 July 2025, 21:50

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SYNTHESIS AND ANALYSIS RESULTS OF THE 1,10-PHENANTHROLINETRIS(2-AMINO-5-ETHYLTHIO-1,3,4-THIADIAZOLE) COPPER(II) PERCHLORATE COMPLEX COMPOUND OBTAINED USING 2-AMINO-5-ETHYLTHIO-1,3,4-THIADIAZOLE AND 1,10-PHENANTHROLINE LIGANDS

This article presents the synthesis method and structural study of a new 1,10-phenanthroline-tris(2-amino-5-ethylthio-1,3,4- thiadiazole)copper(II)perchlorate complex formed with copper perchlorate and the ligands 2-amino-5-ethylthio-1,3,4-thiadiazole and 1,10-phenanthroline. The structure of the...

Actual problems of Natural Sciences / 2025 / July

Matmuratova Zulayxo Ikromboy Kizi

Volume 9 | Issue 7

3 July 2025, 21:50

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SYNTHESIS AND STUDY OF THE COORDINATION COMPOUND OF ZINC NITRATE WITH KETOROLAC

This article presents the synthesis and physicochemical characterization of a novel coordination compound formed from zinc nitrate and ketorolac. The compound [Zn(ket)2](NO3)2·2H2O was synthesized in a water–ethanol mixture under pH conditions of 5.5–6 and precipitated as white crystals....

Actual problems of Natural Sciences / 2025 / July

Karimova Momojon Egamberganovna, Ismailova Shahla Atanazarovna, Khudoyberganov Oybek Ikromovich

Volume 9 | Issue 7

3 July 2025, 21:50

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ANNEALING-INDUCED PHASE EVOLUTION AND MORPHOLOGICAL CONTROL IN RF-SPUTTERED VO2 THIN FILMS

This study investigates the influence of annealing temperature (200–500 °C) and atmosphere (air vs. oxygen) on the properties of VO2 thin films deposited by RF magnetron sputtering. XRD analysis revealed a mixed-phase composition (VO2/V2O5), with oxygen annealing promoting preferential VO2growth at...

Actual problems in modern technical sciences / 2025 / July

Bunyod Allabergenov, Farangis Allabergenova, Uchqun Kutliev, Sungjin Kim

Volume 9 | Issue 7

3 July 2025, 21:50

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STATISTICAL WORD IMPORTANCE MODELING FOR UZBEK TEXT SUMMARIZATION: A TF-IDF-BASED APPROACH WITH IMPROVED SENTENCE SELECTION

Summarization is a central activity in the field of Natural Language Processing that makes it possible to extract essential information from a massive amount of text with minimal preservation of key meaning. But in the case of the Uzbek language, summarization is a weak field because it is an...

Actual problems in modern technical sciences / 2025 / July

Khabibulla Madatov

Volume 9 | Issue 7

3 July 2025, 21:50

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DESIGN AND IMPLEMENTATION OF A MODEL AND ALGORITHM FOR PART-OF-SPEECH TAGGING IN UZBEK TEXTS USING THE CONDITIONAL RANDOM FIELDS (CRFs) APPROACH

This paper presents a part-of-speech tagging system for the Uzbek language based on the Conditional Random Fields (CRF) approach. Using a manually annotated corpus and a set of language-specific morphological and contextual features, the model was trained and evaluated through 5-fold...

Actual problems in modern technical sciences / 2025 / July

Sharipov Maksud

Volume 9 | Issue 7

3 July 2025, 21:50

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