February - KhorezmScience.uz

INVESTIGATION OF THE DYNAMICS OF MULTIPHASE STRATIFIED FLOWS BASED ON MATHEMATICAL MODELING

Tue, 03 Feb 2026 22:00:19 +0500

The article examines issues related to the investigation of the dynamics of multiphase stratified flows based on a model of the motion of interpenetrating and interacting multiphase media. The study explores the interaction between the lower atmospheric layers and water bodies, the stability of dispersed mixture flows, and the dynamics of multiphase flows in pipelines. The obtained results serve to enhance the efficiency of
designing and operating hydraulic structures.

ENERGY SPECTRUM OF SCATTERED Ar+ IONS FROM THE DEFECT SURFACE OF InP (001) < ī10>

Tue, 03 Feb 2026 22:00:18 +0500

This article presents the results of computer modeling of scattered ions Ar+ from the stepped surface of InP ( 001) < ī10> at different values of the angle of incidence and at the E0=1 keV using the binary collision approximation method. The dependence of the energy of scattered ions on their scattering angle is obtained, and it is shown that at small angles of incidence, scattering from the ideal part of the surface is observed. Increasing the values of the angle of incidence leads to scattering of ions from an atomic step, which is modeled on the surface. The obtained results showed that when scattering a stepped surface, in the dependence of E() of scattered ions, ovals are observed corresponding to two values of energy at the same scattering angle. Also, energy spectra are obtained, which confirm that with an increase in the angle of incidence of ions, peaks are observed corresponding to specularly scattered, scattered from the end atom, and dechanneled ions.

THE EFFECT OF DIFFERENT DESIGNS OF STUDDED–SLATTED DRUMS ON THE IMPURITY SEPARATION PROCESS

Tue, 03 Feb 2026 22:00:17 +0500

This article presents the results of experimental studies on the influence of different конструктив parameters of peg-and-plank drums on the process of separating fine impurities from raw cotton. While maintaining the overall drum diameter at 400 mm, the internal shell diameters (300, 270, 240, and 210 mm) and peg lengths (50, 65, 80, and 95 mm) were varied. The experiments were conducted at processing capacities of 3, 5, and 7 tons per hour using grade I and grade III cotton. The results demonstrated that increasing the peg length and reducing the internal shell diameter improved the degree of cotton loosening and reduced mechanical damage to the seeds. The optimal performance was observed at an internal diameter of 240 mm and a peg length of 80 mm, ensuring high cleaning efficiency with minimal seed damage. The proposed конструктив improvements contribute to enhancing the technological efficiency of cotton cleaning machines and improving the quality of cotton processing.

THE PHILOSOPHY OF THE ESOTERIC SYMBOLS IN THE TAJ MAHAL DOME

Tue, 03 Feb 2026 22:00:16 +0500

The article states that, as a result of astronomical analysis of the esoteric symbols on the dome of the Taj Mahal in India, the architects, by order of Shah Jahan, deliberately made the main dome of the Taj Mahal asymmetrical. This symbolizes that in the afterlife, people’s desires and capabilities never coincide, or in short, a “small world,” and is explained as embodying the Islamic wisdom that perfection belongs to Allah.

WISDOM HIDDEN IN THE SYMBOLS OF ARCHITECTURE

Tue, 03 Feb 2026 22:00:15 +0500

This article sheds light on the essence of the concepts of symbol, icon, and semantics, as well as their role in culture, art, and especially architecture. Symbols and icons, as figurative expressions of human thought, serve to convey ideological, philosophical, and aesthetic meanings through space and form. Semantics is a scientific discipline that analyzes the content of these signs and forms, through which the hidden meanings, historical, and cultural context of architectural objects are revealed. The abstract considers the semantic interpretation of symbols and icons as an important theoretical basis for understanding the architectural environment.

HISTORY OF CONSTRUCTION AND DECORATION OF TAJ MAHAL COMPLEX

Tue, 03 Feb 2026 22:00:14 +0500

This article describes the Taj Mahal complex’s great artistic construction, its shape, color, vegetation, architectural elements, and the logical solution of each of its decorations, as well as the symbolic meanings of the parts of the complex and its miraculous architecture.

USE OF RECREATIONAL RESOURCES IN THE FERGANA VALLEY REGIONS EFFICIENCY IMPROVEMENT ISSUES

Tue, 03 Feb 2026 22:00:13 +0500

The article analyzes the current state of use of recreational resources in the Fergana Valley regions(Andijan, Fergana, Namangan), their territorial disparities, and economic efficiency. Based on statistical data for 2015– 2024, the dynamics of development of recreation and tourism infrastructure, its impact on employment, and the volume of services are assessed. An economic-geographic approach and practical proposals are developed to increase the efficiency of the use of recreational resources.

HYDROPHOBIZATION OF LINEN FABRIC USING A PARAFFIN-BASED FORMULATION MODIFIED WITH MELAMINE AND ITS EVALUATION ACCORDING TO GOST STANDARDS

Tue, 03 Feb 2026 22:00:12 +0500

The present study explores the hydrophobization of linen fabric through treatment with a paraffin-based composition modified by stearic acid, oleic acid, and melamine. The hydrophobic formulation was prepared in an ethanol–water medium, and fabric samples were treated via impregnation followed by thermal curing. The performance of the treated textile was assessed in accordance with GOST 3816-81, GOST 12020-72, and GOST 9733.4-83 standards. The results demonstrated significant resistance to water penetration under pressure, efficient droplet repellency, and preservation of hydrophobic properties after washing cycles. The chemical structure of the formed hydrophobic layer was characterized using Fourier-transform infrared (FT-IR) spectroscopy. Spectral analysis confirmed the presence of long-chain aliphatic hydrocarbons and functional
groups associated with melamine and fatty acids, indicating the formation of a stable hydrophobic coating on the fabric surface.

SYNTHESIS OF SYNERGISTICALLY ACTING INTUMESCENT FLAMERETARDANT AND ANTISEPTIC AGENTS BASED ON ZINC BORATE AND INVESTIGATION OF THEIR PHYSICOCHEMICAL PROPERTIES

Tue, 03 Feb 2026 22:00:11 +0500

In this study, a new synergistically acting intumescent flameretardant and antiseptic agent labeled ZnB-1 was synthesized based on zinc oxide, boric acid, phosphoric acid, and urea in order to provide fire protection for textile materials. The optimal temperature and reaction time parameters were determined, and the reaction yield was increased up to 92%. The chemical structure of the obtained product was investigated using FTIR spectroscopy, while its thermal stability was evaluated by TGA/DTA methods. The results confirmed the formation of a phosphorus–boron– nitrogen–zinc complex structure, the presence of covalent P–O–C bonds, and the high thermal stability and washing resistance of the flame retardant. The incorporation of ZnO nanoparticles exhibited a pronounced synergistic effect, contributing to the formation of a mineral barrier and an increased char residue yield. The synthesized flame retardant is recommended as a promising fire-protective material for cotton and cotton–polyester fabrics.

THEORETICAL ANALYSIS OF THE VERBALIZATION OF THE EMOTION OF JOY THROUGH THE CONCEPT OF “LAUGHTER”

Tue, 03 Feb 2026 22:00:10 +0500

The article is devoted to a theoretical study of the verbalization of the emotion of joy through the concept of “laughter.” The lexical-semantic, pragmatic, and cultural aspects of laughter as a linguistic expression of joy are examined. The functions of laughter in communication, its semantic multilayered nature, and its role in constructing cultural-emotional experience are analyzed. It is concluded that the concept of “laughter” is a complex lexical-semantic and pragmatic unit performing expressive, communicative, and symbolic functions.