SYNTHESIS, STRUCTURE AND ELECTRONIC PROPERTIES OF A NEW [Zn(IAA)2(NA)2]·2H2O COORDINATION COMPLEX: A COMBINED EXPERIMENTAL AND COMPUTATIONAL STUDY
A new mixed-ligand zinc (II) coordination compound formulated as [Zn(IAA)2(NA)2]⋅2H2O was synthesized using indole-3-acetic acid (IAA) and nicotinamide (NA) ligands and investigated by combined experimental and computational methods. The composition and coordination environment of the...

Actual problems in modern technical sciences / 2026 / May

Ismailova Shahla Atanazarovna, Khasanov Shodlik Bekpulatovich, Ashirov Mansur Allanazarovich, Khudoyberganov Oybek Ikromovich

Volume 10 | Issue 5

3 May 2026, 22:02

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MATHEMATICAL MODELING OF DYNAMIC NONLINEAR FILTRATION AND NUMERICAL SOLUTIONS TO NONLINEAR EQUATIONS
This article examines the mathematical modeling of the dynamic process of reservoir filtration systems described by nonlinear partial differential equations and a numerical algorithm for their implementation, as well as the quasi-linearization of the nonlinear discrete model of the process under...

Actual problems of Mathematics, Physics and Mecanics / 2026 / May

Suvonov Olim Omonovich, Jhurakulova Sarvinoz Ilxom Kizi

Volume 10 | Issue 5

3 May 2026, 22:01

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COMPUTATIONAL ANALYSIS OF STEADY VISCOUS FLOW PAST A CIRCULAR CYLINDER
This study numerically investigates steady viscous flow past a circular cylinder for Reynolds numbers up to 300. A Newton-based iterative method and improved boundary conditions are proposed. Results show wake recirculation and wake shortening near (Re=300), while drag, pressure distribution, and...

Actual problems of Mathematics, Physics and Mecanics / 2026 / May

Khasanov Azizbek Bakhodirovich

Volume 10 | Issue 5

3 May 2026, 22:00

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Actual problems of modern science, education and training
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List of Issues

Volume 10 | Issue 4

15 April 2026, 22:20

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ANALYSIS OF THE VEGETATION STATUS OF AGRICULTURAL CROPS USING THE NDVI INDEX (as an example of Khorezm region)
This article analyzes the spatial-temporal distribution of vegetation cover in Khorezm region during the 2025 growing season using 10-meter spatial resolution Sentinel-2A/B multispectral data and the Normalized Difference Vegetation Index (NDVI). By leveraging Google Earth Engine and QGIS...

Actual problems of Natural Sciences / 2026 / April

Abdullayev Aminboy Gulmirzayevich, Bekimmatov Rahmatjon Anvarbek Ugli

Volume 10 | Issue 4

3 April 2026, 22:16

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CREATION OF AN INTERACTIVE DIGITAL MAP OF OIKONYMS OF THE KHOREZM REGION
This article analyzes the natural and geographical features of toponyms, in particular oikonyms, based on the geographical location of the Khorezm region, and pays special attention to the aspects of developing their interactive digital map....

Actual problems of Natural Sciences / 2026 / April

Kutlimuratov Allayar Abdusharipovich

Volume 10 | Issue 4

3 April 2026, 22:15

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MATHEMATICAL PROCESSING OF CALIBRATION CURVE DATA FOR THE COMPLEX COMPOUND FORMED BETWEEN YTTRIUM(III) AND THE REAGENT 2,4-DINITROSO-1-HYDROXY-5-AMINONAPHTHALENE6,8-DISULFONIC ACID, EMPLOYING THE METHOD OF LEAST SQUARES REGRESSION ANALYSIS
Elements of the yttrium group find application in the production of luminescent materials; as alloying additives for steel and cast iron to enhance thermal stability; and in the synthesis of refractory compounds, phosphors, and laser-active materials. Chemical and physicochemical methodologies for...

Actual problems of Natural Sciences / 2026 / April

Nurjanova Fazila Farkhodovna

Volume 10 | Issue 4

3 April 2026, 22:14

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PATRIOTISM MANIFESTED THROUGH HEROISM (social-philosophical approach)
The article expresses the most noble qualities of the people, the nation, as a separate phenomenon of patriotism, heroism, based on the belief that the people with such heroes have the strength, power and courage to create....

Actual problems of history, philosophy and sociology / 2026 / April

Khakim Gafurovich Saidov

Volume 10 | Issue 4

3 April 2026, 22:13

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HISTORICAL STUDIES OF THE DEVELOPMENT OF HISTORICAL EDUCATION IN THE KHORESM REGION OF UZBEKISTAN IN THE PERIOD OF INDEPENDENCE
This abstract analyzes the development of historical science in Uzbekistan after 1991, as well as the emergence of new approaches to studying historical education. It highlights that during the years of independence, favorable conditions were created for revising the “blank spots” in history,...

Actual problems of history, philosophy and sociology / 2026 / April

Kenjayev Bunyod Bakhtiyor Ugli

Volume 10 | Issue 4

3 April 2026, 22:12

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CURRENT TASKS OF FORMING AN IDEAL LEADER MODEL
This article emphasizes that in order to form a modern leader and improve his social image, it is not enough to rely on the significant experience accumulated in this field in the country, it is necessary to form an ideal leader model, search for young, promising specialists with leadership skills,...

Actual problems of history, philosophy and sociology / 2026 / April

Yuldashev Bekmirza Elmurodovich

Volume 10 | Issue 4

3 April 2026, 22:11

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