Tashkent State Technical University named after Islam Karimov

Plant Disease and Phytopathogen Research in Central Asia: A Bibliometric Mapping of Research Trends, Collaboration, and Emerging Directions

Plant diseases and phytopathogenic threats pose significant challenges to agricultural productivity and food security in Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan. This study aimed to characterize research development, scientific productivity, collaboration...

Insulation performance of polyimide/epoxy resin interface modified by silane coupling agent

High-frequency transformers use a composite insulation of epoxy resin (EP) bulk and polyimide (PI) inter-turn coating. The PI-EP interface is a weak point. To enhance interfacial stability, KH550 silane coupling agent is employed as a molecular bridge to form Si-O-C chemical bond...

RESEARCH AND DEVELOPMENT OF COTTON CELLULOSE PRODUCTION TECHNOLOGY

Today, the current problem one of the pressing issues facing the pulp and paper industry of the Republic of Uzbekistan is the development of an efficient technology for producing cotton cellulose from low-grade cotton linters. The use of this type of local raw material can expand...

Modeling and Optimization Methods of Hybrid WDM/TDM Multiplexing Technology for Fiber-Optic Humidity Sensor System

This article presents a mathematical model and optimization methods for a fiber-optic humidity sensor system based on hybrid wavelength division multiplexing (WDM) and time division multiplexing (TDM) technology. In modern telecommunications and industrial monitoring systems, the...

Modeling and Optimization Methods of Hybrid WDM/TDM Multiplexing Technology for Fiber-Optic Humidity Sensor System

This article presents a mathematical model and optimization methods for a fiber-optic humidity sensor system based on hybrid wavelength division multiplexing (WDM) and time division multiplexing (TDM) technology. In modern telecommunications and industrial monitoring systems, the...

Spacing-Dependent Electrostatic Shielding and Early Positive Streamer Development in Twin Grounded Emitters: A 3D to 2D Reduced-Order Mapping

Geometric shielding in multi-emitter configurations modifies the near-tip ionisation environment, whereas resolving each geometry with a full three-dimensional transient discharge model is computationally demanding. Here, the three-dimensional electrostatic field of two grounded...

GeoProtoNet: texture-aware few-shot lithology classification from rock imagery using frozen DINOv2 features

Abstract Rapid lithology identification on open-pit bench faces is typically performed manually by geologists, yet it is subjective, inconsistent under variable field conditions, and cannot be scaled to the large image volumes required by conventional supervised deep learning. We...

THE EFFECT OF MOLDING-SAND MIXTURE PROPERTIES ON THE QUALITY OF FREIGHT- WAGON SIDE-FRAME CASTINGS MADE OF GRADE 20GL STEEL

This article studies how the composition of the molding-sand mixture and the cleanliness of the molding sand affect casting quality in the production of freight-wagon side frames made of grade 20GL steel. The aim was to relate the properties of the clay-bonded (green) sand, namel...

Investigation of Stress Redistribution Within the Host Rock Mass During Underground Mining Operations

The article presents the results of a systematic investigation of stress redistribution and the formation of stress concentration and relaxation zones in the rock mass surrounding underground mine workings under the influence of mining operations. The study was conducted consider...

THE EFFECT OF MOLDING-SAND MIXTURE PROPERTIES ON THE QUALITY OF FREIGHT- WAGON SIDE-FRAME CASTINGS MADE OF GRADE 20GL STEEL

This article studies how the composition of the molding-sand mixture and the cleanliness of the molding sand affect casting quality in the production of freight-wagon side frames made of grade 20GL steel. The aim was to relate the properties of the clay-bonded (green) sand, namel...

Selective transport of plasma-derived reactive species through the plant aquaporin channels: a molecular dynamics study

Abstract The selective permeability of reactive oxygen and nitrogen species (RONS), generated by cold atmospheric plasma (CAP), through plant aquaporins was investigated to identify plasma-derived species capable of intracellular delivery. Using atomistic molecular dynamics and e...

Local Space-Charge Memory and Grounded-Electrode Transient Response in a Needle–Plane Air Gap Under Polarity Reversal

Polarity reversal changes not only the instantaneous electric field in a needle–plane air gap but also the subsequent field–particle coupling through the charged-particle distribution established before reversal. For a configuration in which the grounded needle and grounded lower...

Circular-orbit dynamics and QPO constraints in static Einstein–scalar–Gauss–Bonnet black holes

Abstract Einstein–scalar–Gauss–Bonnet (EsGB) gravity provides a physically motivated framework for testing strong-field deviations from the Schwarzschild geometry through scalar hair. We study neutral-particle circular motion and high-frequency quasi-periodic oscillations (HF-QPO...

Hepatitis B and D burden in Uzbekistan: comprehensive analysis of seroprevalence and risk correlates from a countrywide study

Abstract Background Uzbekistan faces a substantial burden of hepatitis B and D virus (HBV and HDV) infections despite implementing universal hepatitis B vaccination in 1998. Regional variation in disease distribution and contemporary transmission dynamics remain inadequately char...