OAK jurnallaridan yig‘ilgan 104809 ta ilmiy maqola: sarlavha, mualliflar, annotatsiya, kalit so‘zlar, DOI va tayyor iqtibos formatlari.
This article widely covers the costs associated with the transfer of electrical energyto consumers, the role and importance of private electricity producers today, the stages of theirdevelopment, trends associated with…
The article determines the speed of movement of the ripper to ensure crumbling ofsoil lumps lying on the surface of the field during surface tillage. The destruction of soil lumps lyingon the soil surface occurs as a…
The article presents the results of theoretical and experimental studies of the knife ofthe loosener of a machine for processing and sowing grain crops on sloping fields. The mainparameters of the loosener are…
It is important to determine the parameters of the moving dunes and the flow rate inthe bottom of the channel when solving problems related to the design and use of many earthenchannels. This article presents the…
When gas moves through a gas pipeline, in the case of significant speed, in manycases the flow stratifies in the form of an annular film of liquid. The article discusses issues relatedto the mode of movement of liquid…
Currently, determining the shape of deformable channel channels that do not form azone of pile formation is one of the urgent problems. In other words, the main requirement in thedesign and operation of earthen channels…
This article presents the results of a study conducted to determine the thermalefficiency of a solar pond device in the city of Kashi. Experiments were conducted with and withoutsolar reflectors to increase the…
This article presents the results of testing in natural environmental conditions of anew mobile device based on a reflective photocell battery equipped with a self-cooling system withoutadditional energy recovery at the…
The article presents the method of calculating the heat load of modern solargreenhouses and the analysis of the results. The seasonal change of the heating power required for theheater in the greenhouses with…
The optimal proportions of organic additives containing nitrogen and sulphur, theirstructure were studied in the article by IR-spectroscopy analysis, and their physico-chemicalproperties were studied. According to the…
This article presents the comparative results of determining the effectiveness of threebactericidal reagents with different active bases against sulfate-reducing bacteria (STV) isolatedfrom the water of the North…
Phosphorites are one of the types of raw materials for the production of phosphatefertilizers. Recently, work has sharply intensified in Uzbekistan to create a local raw material basefor the production of phosphate…
The railway is the busiest transport and properly designed and used will further improve efficiency. Forthis reason, this article gives the most convenient transition model in the section of rail lifting from oneplane…
Изложенный подход, на наш взгляд, наиболее правильно отражает сам механизм процессаэксплуатации локомотивов, а следовательно, и соотношение между этими понятиями. Ремонт итехническое обслуживание целесообразно…
Ushbu maqolada qum ko‘chkilarini yo‘llarga ta’siri haqida olib borilgan tadqiqotlar tahili, qumlarniko‘chishiga ta’sir etuvchi omillarni aniqlash natijalari aks etgan. Shuningdek, avtomobil yo‘lini qumko‘chishidan…
Ushbu maqolada Toshkent shahrining yoʻlovchi tashish sohasidagi mavjud kamchilik va muammolaroʻrganilgan. Hozirgi kunda jamoat transporti xizmatlariga bevosita va bilvosita taʼsir etuvchi omillartahlil etilgan…
Ushbu maqolada hozirgi kunda jamoat transportini rivojlantirish shahardagi aholi harakatchanlikdarajasini oshirishi va bevosita makroiqtisodiy koʻrsatkichlarga taʼsir etishi yoritilgan. Qolaversatadqiqot davomida jamoat…
Soʻrovlarga masofadan xizmat koʻrsatishda server qurilmalari eng muhim vositalardan hisoblanadi. Shusababli uning xizmat koʻrsatish samaradorligini aniqlash ish jarayonini toʻgʻri tashkil etishning asosiyomillaridan…
Ushbu maqolada chorrahalarda transport vositalarini xavfsiz harakatini oshirisha halokatlilikkoeffitsiyentidan foydalangan holda chorrahda xavflilik darajasi bo'yicha har bir kesishma o‘rganilgan.Chorrahalar va yo‘l…
Logistika markazlari uchun mos joylarni tanlash ularga bo‘lgan ehtiyojni aniqlash kabi muhimdir.Logistika markazlari joylashuv joylarini aniqlashda optimal yechimlarni topish uchun aniq mezonlarnianiqlash va to‘g‘ri…
Ushbu maqolada xozirgi kunda kompleks qo‘shimchali syement betonlaridan foydalanish usullariko‘rsatib o‘tilgan. Zamonaviy qurilishda yangi avlod betonlarining yuqori fizik-mexanik va ishlashxossalarini kuchaytirishda…
Ushbu maqolada O‘zbekiston Respublikasining qimmatli qog‘ozlar bozori modeli tamoyillarigaasoslangan ijtimoiy yo‘naltirilgan bozor iqtisodiyotiga o‘tish respublika iqtisodiy rivojlanishstrategiyasining yaxlit ekanligi…
Приведен сравнительный анализ пространственной жесткости многоэтажного железобетонногокаркасного здания с газобетонными стенами и новыми каркасно-обшивными ограждающимиконструкциями (КОС) на основе динамического расчета…
With deep sorrow we announce the death of Academician Bekhzod Sadykovich Yuldashev, an outstanding physicist, talented organizer of science, public and political figure, President of the Academy of Sciences of the…
Using optical spectroscopy method the dependence of the electronic structure and spectral properties of asymmetric cyanine dyes − the bases of styryls and methoxystyryls − on their chemical structure, primarily the type…
The formation mechanism of methylglyoxal monomers, dimers, trimers, methylglyoxal+benzene, and methylglyoxal+ethanol complexes was investigated using the density functional theory (DFT) approach and the…
line-water solutions was established and their dynamics were studied depending on the temperature of the solution and the concentration of γ-picoline in the solution. Analysis of the research results confirms the…
Despite significant advances in hydrogen storage using carbon-based nanomaterials such as carbon nanotubes (CNTs), attempts to significant increase the hydrogen storage capacity are still lacking. This study examines…
Comparative conditions for the stabilization of hydrosol samples of polydisperse silica SiO2 nanoparticles in the size range up 66 to 375 nm are considered. Nanoparticles were obtained at the Institute of Ion-Plasma and…
The Nd:YAG, Ce:Nd:YAG, and Cr:Nd:YAG active media in multi rod configuration are investigated for solar-pumped lasers using simulation methods. A statistical model employing Monte Carlo photon tracing simulates a laser…
This study dedicated to a novel method for synthesizing silicon-carbon (Si/C) and silicon dioxide-carbon (SiO2/C) nanocomposite anodes for lithium-ion batteries, utilizing industrial copper slags from the Almalyk Mining…
A method for producing a thin semiconductor film of antimony selenide (Sb2Se3) via vacuum thermal evaporation with the assistance of an electric field was presented. The morphological, elemental and structural…
The review explores recent advancements in aluminum-ion battery technology, focusing on innovations in cathode materials, electrolyte chemistry, and performance enhancement. Notable developments include new cathode…
Observations from the James Webb Space Telescope (JWST) in recent years pose serious challenges to standard cosmology. Such a situation prompts to reconsider the models presented as alternatives to the Lambda-Cold Dark…
The discovery of disagreement between the main indices of solar activity − the international sunspot number (or Wolf sunspot number) and the group sunspot number − led to the need to determine the causes and factors…
The issues of instability of individual oscillation modes for a nonlinear nonstationary model of collapsing galaxy clusters have been studied. The instability of the model with respect to two disturbance modes is…
In this work, interactions in biologically active active “butanoid (butyric) acid (BA)-acetonitrile/DMSO/pyridine/water” complexes and their spectral manifestations were studiedusing ab-ibitio calculations. When complex…
The resource of fast-reading scintillator LuAG:Pr single crystals used in detectors for high-energyphysics is limited by fast neutron fluences ≥1016 cm−2 due to the accumulation of defect color centers.The purpose of…
A solar laser with an active medium of Ti:Sa/Nd:YAG composite structure has been studiedfor the first time using Monte Carlo photon tracing technique. The results show that the use ofan Nd:YAG active medium in…
In the paper, we numerically investigated the effects of the spectral shift in LED emission onthe pumping characteristics of LED-pumped lasers. We aim to illustrate how variations in theblue LED emission spectrum can…
Single-crystal films of solid solution Si1-xGex (0<x<1) were grown on Si<111> substrate from atin solution-melt at the temperature in the range of the onset of crystallization Tnc=(800−1050)°С by…
The mass-charge spectra of multiply charged ions in a two-element laser plasma are studied bylaser ionization mass-spectrometry. The package of the mass spectrum of the Eu2O3 ions of thelaser plasma was obtained within…
A theory is developed of the inter band magneto-optical absorption of light in a nanodimensionalquantum well in a strong magnetic field due to interaction electrons with opticalphonons. We study the behavior of the…
The Faraday effect (EF) of single-crystal of dysprosium orthoaluminate (DyAlO3) was investigatedin the wavelength range 440–750 nm in the visible region of the spectrum at temperaturesof 90 K and 300 K. Magnetic…
In the paper the catalogs of galaxy clusters are analyzed that have been published based on observationaldata to date. Based on the results of the study, a consolidated catalog was compiledcontaining 213 of the richest…
The article presents the results of a photometric study of observational data of a four-componentgravitationally-lensed quasar GRAL J024848.7+191331 observed at the Maidanak Observatory.The light curves of the system as…
The optical absorption and photoluminescence of UPS-923A organic scintillators with a polystyrene base and p-Terphenyl (рTP) and 1,4-Bis(5-phenyloxazolyl benzene (POPOP) additives pTP and POPOP additives, the absorption…
In this work, the influence of temperatures (300 and 600K) and pressures (1.5 and 10 bar) on the adsorption process of nitrogen atoms by a double-walled carbon nanotube (DWCNT), (5.5+1010) was studied by the molecular…
We studied transversely solar-pumped Nd3+ doped fiber laser with parabolic trough via simulation models developed by Monte Carlo photon tracing method. Our analysis involved estimating losses at cavity walls and the…
In this work, the results of a comparative study of the effect of drought on chlorophyll fluorescence and morphophysiological parameters of genetically modified cotton varieties grown in field conditions. The dynamics…