OAK jurnallaridan yig‘ilgan 140147 ta ilmiy maqola: sarlavha, mualliflar, annotatsiya, kalit so‘zlar, DOI va tayyor iqtibos formatlari.
The article discusses the key factors determining the development of the food industry in the Samarkand region as a strategically important sector of the regional economy. Based on a comprehensive analysis of…
A methodology and mechanisms for optimizing the processes of identifying, recognizing, and classifying microobjects have been developed using statistical, dynamic, brightness, and histological characteristics of image…
It is obtained some new conditions characterizing the boundedness of Hardy-Volterra operator with Oinarov's kernel acting between the weighted Lebesgue spaces and and provided norm estimates.
In this paper, we classify all two-dimensional bicommutative algebras over an arbitrary field. Foundational ideas in nonassociative algebra go back to early work (e.g., Smiley), whereas the bicommutative setting was…
Nanotehnologiyalarning rivojlanishi nanostrukturaviy materiallarni sintez qilish usullarining rivojlanishi va optimallashuvi bilan uzviy bog'liqdir. Xozirgi kunda nanomateriallarni sintez qilish usullarining mingdan…
This article analyses and studies the scientific experience of countries with developed important agricultural and agro-industrial sectors. Many proposals and recommendations have been developed for utilising these…
Ushbu ishda chegaraviy bosim gradientini hisobga olib birjinsli suyuqliklar anomal sizishining tekis-radial masalasi ko'rib chiqilgan. Jarayon kasr tartibli differentsial tenglama bilan modellashtirilgan. Kasr hosila…
This article presents some reflections on the history of natural resource studies in Lower Zarafshan, as well as on the problems and solutions associated with the use of its climate resources. The article focuses on…
In this study, CaTiO₃-based perovskite materials were synthesized and characterized to investigate their structural and multifunctional properties. The synthesis was carried out via a modified sol-gel method using…
This article presents the development of parallel computational approaches for spectral analysis based on two-dimensional fast Haar transform algorithms in the digital processing of geophysical signals. The study…
The stability analysis of solutions in alternative theories of gravity, such as scalar-tensor theories (STT), often leads to a Schrödinger-like equation governed by a complex effective potential. The properties of this…
The mechanism of the paramagnetism effect is theoretically discussed. Various mechanisms of phonon scattering on different defects, which lead to a decrease in thermal conductivity, are explained within the framework of…
It is known that the climatic conditions of the basin are of great importance in the formation of the flow of all rivers in the world, among the natural geographical factors. In particular, climatic factors, namely…
This paper considers the problem of recovering the parameters of a partially isospectral Sturm–Liouville operator on a finite interval. It is shown that the proposed algorithm can be applied to solve certain types of…
This research paper presents the results of experiments on obtaining biodegradable materials using poly-L-lactide, modified cellulose, and a bentonite/kaolin mixture. The physicochemical properties of the obtained…
In this paper, a third-order operator matrix acting in the fermionic Fock space is considered. To study its spectral properties, second- and third-order auxiliary operator matrices are introduced. The relationships…
In the process of studying mixed-type loaded equations, it is impossible to directly apply the existing extremum principles and existence theorems, as well as the methods of classical theory. This is primarily due to…
This work presents the results of a comprehensive physicochemical study of the interaction between ammonium nitrate (NH4NO3) and glycine (NH2CH2COOH) in aqueous solutions and the solid phase. Using FT-IR spectroscopy…
In this work, AgNWs structures were synthesized on a polymer substrate and their structural properties were investigated. Based on the structural and morphological characteristics of the synthesized AgNWs samples, it…
Debris-flow and flood risks for the motor roads of Namangan Region have been analyzed. A semi-quantitative assessment method based on a scoring system is proposed. The results enable classification of road sections by…
LaFeO₃ perovskite material was synthesized using the sol-gel method. The obtained sample was subjected to physicochemical investigations to analyze its structural and surface morphological properties as well as quantum…
This article analyzes the application areas of natural uranium isotopes — uranium-238, uranium-235, uranium-234 — as well as thorium-232, and examines the main characteristics of nuclear fuel isotopes — plutonium-239…
The article presents general and regional data on irrigated lands of the Zarafshan economic region. The state of provision of these lands by agricultural land types, the region's share in the country, and territorial…
In this work, we investigate the dynamics of test particles in the background of the Bocharova-Bronnikov-Melnikov-Bekenstein (BBMB) black hole solution, which arises in a scalar-tensor theory with a conformally coupled…
We investigate the Schrödinger operators, where is the fixed quasi-momentum of a pair of identical fermions on a 1D lattice. The system has both nearest-neighbor and next-to-nearest neighbor interactions with parameters…
Currently, many studies are being conducted to classify skin diseases at early stages and several solutions are being proposed. In particular, classification of skin diseases using medical images using intelligent…
In this paper, the problem of nonlinear vibrations of an elastic rod of variable cross-section with a dynamic absorber under random effects is considered. In order to evaluate the efficiency of the dynamic absorber and…
This study demonstrates that the inverse scattering transform method within the class of rapidly decreasing functions proves highly effective for solving the Cauchy problem for the loaded Hirota equation. The primary…
In this paper, the problem of nonlinear random parametric oscillations of a vibration-protected mechanical system is considered. Nonlinear ambiguous functions characterizing the dissipative properties of materials of…
In this study, the effect of different solvent phases (water, DMSO, acetonitrile, ethanol, chloroform and heptane) on the electronic, reactivity and nonlinear optical (NLO) properties of paracetamol was analyzed using…
Pyrrolo[2,3-d]pyrimidinones were made by reacting tricyclic pyrrolo[2,3-d]pyrimidinones with 4-halogenated phenylamines. The structures of all the new compounds were figured out using ¹H-NMR, ¹³C-NMR analyses.
A green low-temperature method for the synthesis of nanostructured KPbBr₃ perovskite is presented. The obtained nanocrystals are integrated into a hydroxyethyl cellulose (HEC) matrix, at RH = 95% the photosignal…
This paper considers a mathematical model of the transport of a degrading solute in a two-zone porous medium, including active and passive zones. The model takes into account the processes of diffusion, adsorption and…
Currently, ion-selective electrodes are used to control the composition of process solutions in various industries, and to analyze ultrapure water. They have also found application in medicine, as they meet the…
The paper analyzes some parametrized singular surfaces in three dimensional Euclidean spaces. It is investigated a transversality condition for these surfaces.
This article analyzes the experience of developed and developing foreign countries in the territorial organization of urbanization processes. In particular, examples from countries such as the United States, Sweden…
This paper is devoted to study the mixed problem for a nonhomogeneous pseudoparabolic equation. The Hilfer fractional equation is studied with initial value conditions recording first variable t and Samarskii-Ionkin…
In this scientific paper, the landscape-meliorative approach and the evaluation of landscapes based on various principles are examined in the context of studying landscape complexes, with the Middle Zarafshan as a study.
The article shows the impetus and importance of the Uzbek oil industry in the development of the country's economy and the rise of the entire industry by examining the history of measures taken to develop the oil…
Stephen Frederick Starr's work is dedicated to revealing the phenomenon of Central Asian awakening - a rare phenomenon in the history of the East that has made a huge contribution to the development of human…
The article analyzes the achievements made in Uzbekistan during the years of independence as a result of the attention paid to the restoration and development of national culture, the influence of interethnic harmony on…
This scientific article provides a comprehensive analysis of the history of the establishment of the system of training qualified specialists in the field of physical education and sports in the Republic of Uzbekistan…
The article is devoted to the analysis of the demographic situation in Turkestan in the middle of the XIX th century. The size and ethnic composition of the population, the dynamics of birth and death rates, as well as…
The article analyzes the issues of increasing capital costs for the construction of the Central Ferghana water pipeline, the construction of hydraulic structures and their use in the irrigation system using primary…
In this article the changes that occurred in the socio-cultural life of the Turkestan region in the late 19th – early 20th centuries against the backdrop of historical conditions, as well as the activities of Tatar…
В статье рассматриваются вопросы, связанные с экспедиционным, «кабинетным» и институциональным изучением трасс, городов, торговли, культуры и языков Шелкового пути учеными Дании, Швеции, Норвегии с конца ХIХ по первую…
The article examines the development of the oil industry in Uzbekistan and related issues by studying the history of the development of the material and technical base and infrastructure of the oil industry during the…
The article explores that historically the Karakalpaks lived along the Urals, then on the Volga, around the Aral Sea and in the foothills of the lower reaches of the Syr Darya River, and that their migration was largely…
During the colonial period, a number of reforms were carried out in the social life of the Samarkand region. This article identifies the medical reforms implemented by the Russian Empire in the Samarkand region in the…
In the second half of the 19th century - the beginning of the 20th century, the Turkestan General Governorate bordered in the east - the Kulja (Ili) Sultanate, the Emirate of Yettishakhar, the Sin Empire, the Republic…