Actual problems of Mathematics, Physics and Mecanics
Actual problems in modern technical sciences
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Actual problems of Natural Sciences
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
QUАLITY АND ECОLОGICАL STАBILITY ОF WАTER RESERVОIRS ОF KHОRАZM REGIОN
This study аassesses the wаter quаlity аnd ecоlоgicаl stаbility оf wаter reservоirs in the Khоrezm regiоn, cоnsidering аnthrоpоgenic impаcts аnd climаtic fаctоrs. The methоdоlоgy invоlved field sаmpling оf wаter frоm mаjоr nаturаl аnd аrtificiаl reservоirs, lаbоrаtоry аnаlysis оf physicоchemicаl...
3 May 2025, 21:50
THE EFFECTS OF ULTRASOUND ON BLOOD VESSELS AND BLOOD CELLS
Ultrasound (US) with a frequency above 20 kHz is an important tool for medical diagnostics and therapy, especially in the study and treatment of diseases of the circulatory system. Based on an analysis of modern research, this article summarizes the biological effects of ultrasound on blood...
3 May 2025, 21:50
THE EFFECT OF PS-5 AND PLANTAGIN COMPOUNDS ON THE ATPSENSITIVE POTASSIUM CHANNEL IN THE MITOCHONDRIAL MEMBRANE
In this article, the effects of tannins isolated from Rhus glabra and Plantago major on the activity of the ATP-dependent potassium channel in rat liver mitochondria were evaluated. The results showed that these compounds were able to activate the mitoKATP channel even in the presence of its...
3 April 2025, 21:50
CHECKLIST OF THE LYCOSIDAE OF UZBEKISTAN
This article presents an updated list of spiders (Arachnida: Araneae: Lycosidae) found in Uzbekistan. This revised list of the Lycosidae family is based on taxonomic and evolutionary literature, as well as the research conducted by the authors. This comprehensive list of the Lycosidae family...
3 April 2025, 21:50
CREATION OF DESERT AGROPHYTOCENOSES ON THE DRIED BOTTOM OF THE ARAL SEA
The aim of this study was to develop the most effective methods for establishing desert pasture ecosystems on afforestation-suitable bottom sediments of the dried Aral Sea bed and to select desert forage plants to enhance pasture productivity. It was established that when using focal,...
3 March 2025, 21:50
CREATION OF A WATER CADASTRE GEOPORTAL FOR THE KASHKADARYA REGION BASED ON GIS TECHNOLOGIES
This scientific article presents the results of research on improving tools for processing and analyzing geospatial data, the implementation of information and communication technologies in water cadastre management and the use of water resources, as well as the development of a water cadastre...
3 March 2025, 21:50