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
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Modern problems of Philology and Linguistics
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Actual problems in modern agriculture
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Actual problems of Natural Sciences
THE IMPORTANCE OF BIOTECHNOLOGY IN THE CULTIVATION OF SAFFRON (CROCUS SATIVUS L.)
In this scientific article, the effect of biological fertilization on the formation of buds and leaves, the length of leaves, the number of fibrous roots, the length and weight of roots of saffron are studied. Based on the obtained results, it was determined that the amount of zoohumus at a...
3 August 2025, 21:50
SYNTHESIS OF COMPLEX COMPOUNDS OF MANGANESE (II) ION WITH INDOMETHACIN AND AMIDES AND THEIR ANALYSIS USING IR SPECTROSCOPY
In this study, the synthesis of mixed-ligand coordination compounds of manganese (II) ion with indomethacin ligand and amides (formamide, acetamide, nicotinamide), as well as their physicochemical properties, was investigated. The complexes were obtained in solution by reacting manganese (II)...
3 August 2025, 21:50
SYNTHESIS, STRUCTURE AND ANTIBACTERIAL ACTIVITY OF Zn(II) ION COMPLEX WITH DICLOFENAC AND ETHYLENEDIAMINE
Mixed-ligand complex compounds of diclofenac with Zn+2 metal cation and ethylene diamine were synthesized, its molecular crystal structure was determined by X-ray diffraction analysis (XRD), IR spectroscopy, and stability by TG-DSC. Based on the RSA results, it was established that the general...
3 August 2025, 21:50
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...
3 August 2025, 21:50
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,...
3 July 2025, 21:50
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....
3 July 2025, 21:50
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...
3 July 2025, 21:50
THE SIGNIFICANCE OF ARCHITECTURAL MONUMENTS IN THE TASHKENT REGION
In the work, the cultural and historical recreational and tourist resources of the Tashkent region were first classified, then their distribution and location in river basins and their terraces were studied. Differences in the distribution of cultural and historical recreational and tourist...
3 June 2025, 21:50
IMMOBILIZATION MECHANISM AND SPECTROSCOPIC ANALYSIS OF THE ORGANIC REAGENT ERIOCHROME BLACK T ON A FIBROIN SUPPORT
This article analyzes the optimal conditions for the immobilization of Eriochrome Black T salt onto fibroin fiber derived from local silk waste, its chemical bonding mechanism, and its characterization through IR analysis, diffuse reflectance spectroscopy, and absorption properties. It was...
3 June 2025, 21:50
THE EFFECT OF VARIOUS FACTORS ON THE REACTION YIELD OF BENZOYL CHLORIDE WITH SOME 5-SUBSTITUTED AMINO-1,3,4-THIODIAZOLINE-2-THIONES
The reaction of 5-substituted amino-1,3,4-thiodiazoline-2-thiones with benzoyl chloride was studied. The effects of factors such as solvent type, base type, temperature, and time on the reaction conditions have been analysed. According to the experimental results, reactions in the presence of...
3 June 2025, 21:50