OAK jurnallaridan yig‘ilgan 104809 ta ilmiy maqola: sarlavha, mualliflar, annotatsiya, kalit so‘zlar, DOI va tayyor iqtibos formatlari.
We investigated quasi-periodic pulsations (QPPs) in X-ray and extreme-ultraviolet (EUV)emissions during the X-class solar flare (SOL2022-03-30T). Two modes of quasi-periodic pulsations were detected. A longer…
The conducted experiments and theoretical analysis revealed that picosecond-durationNd:YAG laser irradiation induces highly complex thermal and hydrodynamic processes on thesurface of copper foil. Spectroscopic…
In the study, the performance and working mechanisms of memristors based on organicinorganichalide perovskite (OIHP) materials with two distinct configurations: ITO/PEDOT:PSS/Cs0.15MA0.15FA0.7Pb(I0.8Br0.2)3/InGa and…
In this work, carbon nanotubes were synthesized using the catalytic thermal chemical vapordeposition (CVD) method. A thin layer of Ni catalyst was deposited onto a Si substrate with aSiO2 buffer layer using the electron…
The study aims to address the problem of producing low-cost and high-quality metallic powderfrom Ti-6Al-4V alloy with morphological characteristics and particle size distribution thatmeet the requirements of additive…
In recent years, photodynamic therapy (PDT) has become an effective and minimally invasiveapproach for treating cancer and infectious diseases. However, conventional photosensitizers(PS) are limited by short absorption…
The composition and electronic structure of tungsten films with surface oxygen (O2) layerswere investigated using photoelectron and electron spectroscopy methods under ultra-high vacuumconditions. It was found that…
In the study, the diffusion of copper atoms in crystallized poly-germanium films deposited on aSiO2 substrate at a temperature of 550 K was investigated using secondary ion mass spectrometry(SIMS). The obtained mass…
The films Sb2(SxSe1-x)3 were studied by scanning electron microscopy of films grown at differentvapor pressures. Microcrystals in the films are evenly distributed over the surface of thesubstrate. The morphology of the…
In the study the effect of doping by boron (B) on the electrical properties of double-walledcarbon nanotubes (DWCNTs) at various temperatures (from 300 K to 1500 K was investigated.The introduction of boron atoms into…
In this paper, a new method for determining the density of defect states of amorphous semiconductorsis proposed. It is shown that if the experimental curve of the optical absorptionspectrum of an amorphous semiconductor…
A simulation study of a solar-transversely pumped Cr:Nd:YAG laser with Monte Carlo photontracing technique was conducted. The model was used to calculate the pump efficiency, pumpand temperature distributions, and…
This paper presents the results of a study on modeling and predicting the critical superconductingtemperature (Tc) of YBa2Cu3O7δ (YBCO) samples synthesized via the solid-state reactionmethod, using a multiparameter…
Non-adiabatic effects that manifest in the electrical properties of the positive parity states of182,184W nuclei are studied in the framework of a phenomenological model that takes into accountthe Coriolis mixing of…
This article examines the government measures implemented to ensure the financial stability of agricultural enterprises and highlights the general characteristics of modern analytical models used to assess their…
This article analyzes the theoretical, methodological and practical aspects of the sustainable and effective development of the agro-industrial complex in economic regions. The importance of the cluster approach in…
The article presents promising technologies for producing cast parts with wear-resistant coatings using the lostfoam casting process. The compositions and properties of steel powder coatings have been determined…
The article describes the results of experiments conducted on enlarged diameter saw spacers prepared for conducting experiments to improve the seed lintering process and lintering equipment, increase the productivity of…
The article analyzes the economic efficiency of optimizing the motor oil change interval in the D-243 diesel engine of an MTZ-82 tractor operated under hot climate conditions. Annual costs for three oil brands (M-10DM…
This article analyzes energy- and resource-saving technologies used in pre-sowing soil cultivation in agriculture, as well as the design features of harrows equipped with blade-shaped working bodies that implement these…
This article presents the design and operating principle of a combined machine developed for strip tillage of soil in rainfed agricultural fields and the simultaneous row sowing of chickpea seeds in accordance with…
This study investigates the kinematics of spindle drums based on a planetary-cam-linkage mechanism with elliptical trajectories. Analytical expressions were developed to determine the linear and angular velocities of…
This article presents the results of experimental studies of a loosener of a combined implement designed for the direct sowing of repeated crop seeds with minimum tillage on fields vacated after cereal harvesting…
This article analyzes the current state of qualitative accounting of irrigated agricultural lands using the examples of Jizzakh and Tashkent regions. The study considers the assessment of soil fertility, salinity…
The scientific foundations of restoring degraded irrigated lands in the Chimbay district of the Republic of Karakalpakstan, their phased introduction into agricultural circulation, and the development of…
The article presents the results of a study on the effectiveness of the application of potassium fertilizers at the rate of 100 kg ha-1 prepared from local raw materials in a background of nitrogen and phosphorus…
This article examines the composition of measures for regular maintenance of elements of a water-saving irrigation system. At the same time, the level of safety of the existing drip irrigation system elements was…
This article investigates the improvement of design parameters of drip irrigation systems used in greenhouse conditions, considering the hydraulic characteristics of water flow. The efficiency of the irrigation…
This study looked at how to integrate drip irrigation systems with wireless sensor networks (WSN) to improve water use efficiency and evaluated the benefits of this approach in enhancing the irrigation management…
This paper presents a multi-measurement system for automated water resource management in closed waterbody systems operating under relaxation dynamics and stochastic uncertainty. The system integrates eight sensor…
This article uses Landsat satellite data and GIS technologies (ArcGIS 10.8) to analyze the dynamics and processes of land cover change during the period 1987–2021 in the areas adjacent to the Kattakorgon Reservoir…
The article discusses a numerical study of the movement of water flow in the Amu channel of the Bukhara Machine Channel-ABMK. Water is taken to the inlet channel from one of the most muddy Central Asian rivers in a…
In article are considered priority recommended actions on undertaking the reconstruction work, directed on provision of reliability and safety Dzhizak main pumping station. Recommended introduction multifunction…
This article studies the natural regime of sediment movement in the area of the water intake from the Amu Darya River into the Tashsaka canal. For this purpose, a calibrated two-dimensional hydrodynamic model was…
The article creates a program for calculating the water balance based on the linear diagram of the South Mirzachul Main Canal. The developed computer program will allow for the correct distribution of water…
This paper presents the results of field studies aimed at determining the hydraulic parameters of water flow in the Daryoliq and Divankul main collectors of the Khorezm region. The flow rate and velocity in the…
This paper is devoted to improving a hydraulic model describing the change in salt concentration in canal sections where collector water is discharged from the main collectors of the Khorezm region via pumping…
This study presents a bibliometric and thematic analysis of 852 scientific publications indexed in the Scopus database on strategies for reducing urban air pollution. Using the Biblioshiny software, publication…
This study investigated the feasibility of artificial reproduction of northern snakehead (Channa argus) under the conditions of Uzbekistan and evaluated its primary reproductive characteristics. The experiments…
During the experiment, it was noticed that the morphological, physiological and hematological parameters of the blood of fish kept in bioecological conditions differ from each other depending on the…
This study evaluated the effect of dietary silkworm pupae supplementation on the chemical composition of meat in Cobb-500 broiler chickens. The results showed that silkworm pupae increased protein and dry matter…
This study presents the results of breeding research aimed at developing new mulberry (Morus alba L.) cultivars based on the evaluation of economically valuable traits. The experiments were conducted during…
This study presents the results of a systematic analysis of the natural entomophagous species associated with rose pests in Tashkent City and the Tashkent region of Uzbekistan. Investigations conducted during…
In the fields of the Jizzakh region, in 2023-2025, the average incidence of yellow spot disease in the field of the lucerne was from 0.57% in the k-6335 (Syria) sample, to 6.07% in the k-6652 (Yugoslavia) sample…
This article examines the distribution and damage caused by anthracnose in pomegranate orchards in the Tashkent region in 2020-2022. The study found that pomegranate anthracnose is widespread in…
The paper presents a water-free portable device for extracting entomopathogenic nematodes (EPN) from soil directly under field conditions; the device is protected by invention patent of the Republic of Uzbekistan…
This study determined the total alkaloid content of Vinca major and Vinca minor using a spectrophotometric method. Plant extracts were obtained using 70% ethanol in an ultrasonic water bath. Alkaloid content was…
The article highlights the ecological and practical significance of assessing the current state of populations of the medicinal plant Glycyrrhiza glabra L. (licorice), whose natural raw material resources are…
Under the conditions of the Samarkand region, the cultivation of asparagus varieties with foliar application of growth-regulators resulted in low production costs per unit area (49,423.5–49,505.1 thousand UZS), low…
In this article, the influence of different planting dates and fertilizer rates on the plant height of safflower varieties Millyutinskiy-114 and Gallaorol was studied based on morpho-economic characteristics. As a…