OAK jurnallaridan yig‘ilgan 104809 ta ilmiy maqola: sarlavha, mualliflar, annotatsiya, kalit so‘zlar, DOI va tayyor iqtibos formatlari.
High-quality crystalline films of Sb2(SxSe1-x)3 were obtained by vacuum thermal evaporation method from powders of the binary compounds Sb2S3 and Sb2Se3 at a substrate temperature of 300°C. The influence of the atomic…
The anisotropy of the acoustic properties of mixed KRS-6 crystals has been studied. For the first time, all independent components of the complex elasticity tensor are determined. It is shown that the strongest…
Adsorption and surface ionization of molecules of diatomic alkali halide salts and various classes of organic compounds on the surfaces of oxidized tungsten and molybdenum were studied by non-stationary methods of…
In this work, the optical and morphological properties of an artificial opal-ZnO nanocomposite obtained by chemical deposition were investigated. ZnO nanofilm filled in the pores of artificial opals with photonic…
This paper provides an overview of methods for preparing nickel nanocatalysts. Electric discharge processing is considered as the optimal method for synthesis of nanoparticles. Particles with an average size of 49 nm…
In this study, the results of an experimental study by surface ionization mass spectrometry of the insecticide acetamiprid (N1-methyl-N1-[(6-chloro-3-pyridyl)methyl]-N2-cyanacetamidine) in an oxidized tungsten…
Raman and FTIR spectra of pure ethanol and its proton-donor and proton-acceptor solvents were studied using experiments and ab-initio (DFT) calculations. Spectral bands related to C-H and O-H stretching vibrations of…
The results of observations of the crystallization front during the growth of leucosapphire single crystals by the Czochralski, Verneuil and zone melting methods were carried out. The studies were carried out using a…
The formation of colloidal species of fullerene C60 in two component (xylenedimethylformamide) organic solvents was studied for the first time. The results of the study of the refractive index and UV-visible spectra of…
Using the method of computer simulation based on the density functional theory, the influence of vacancy on the structures of silicon clusters Si29H36 and Si29VH36 are calculated. It is shown that the simultaneous…
This article describes the designs and characteristics of new module types equipped with converters that can convert the thermal component of concentrated solar radiation. These converters are based on granular silicon…
В работе исследовались композитные протонно-обменные мембраны на основе поливинилового спирта, содержащие наночастицы диоксида кремния, которые разрабатывались с целью улучшения их механических свойств и химической…
Исследовано затухание высокочастотных акустических волн в кубических кристаллах хлорида натрия. Впервые определены все три независимых компонента комплексного тензора упругости и эффективные константы Грюнайзена в этих…
The rapid development of polymer solar cell (PSC) technologies in recent years has achieved impressive gains in energy conversion efficiency (ECE), reaching values of over 19 percent, demonstrating great promise for…
The motion of a light spinless particle in the vicinity of a heavy central mass is analyzed. We have derived the wave function and energy spectrum ofa particle. It is shown the ground state of a particle in the…
The refractive indices of n aqueous solutions of 4-methylpyridine (4-MP) were measured at a temperature of 27 Celsius. It has been established that with increasing concentration x of 4-MP in solution, the refractive…
The paper presents the results of studying the nature of the electron energy levels in a quantum well of heterostructures AlAs/InxGa1-xAs/AlAs containing a thin InAs nanolayer. The dependences of these energy levels on…
A prototype of a low-level signal amplifier with the ability to provide stable signal amplification for use in electronic thermometer circuits has been proposed and experimentally implemented. The amplifier can operate…
In this study, intermolecular interactions in liquid methyl-ethyl-ketone and its chloroform solution were studied by Raman spectroscopy and density functional theory (DFT) calculations. In aggregates, the energy…
In this work, on the example of butyl acetate, the nature of intermolecular interactions was studied using vibrational spectroscopy (Raman and FTIR) and non-empirical calculations. The geometric structures of the most…
The influence of an argon environment on the structure and vibrational spectra of methanol was studied by quantum-chemical simulation methods. The DFT method in the B3LYP/cc-pVTZ approximation was used to calculate the…
The growth of oxide layers of various dielectrics on the silicon surface is carried out at high temperatures (1150-1200) Celsius in an atmosphere of dry oxygen O2. The color of the coating is determined by its thickness…
This thesis statement is about how to make effective lesson plan. While making lesson plan the instructor should pay attention to include all 4 skills, because integrated skills motivates learners to learn language…
Maqolada algoritm va uning turlari, kelib chiqish tarixi, al-Xorazmiy ishlaridan namunalar keltirilgan.
Hozirgi kunda mikroorganizmlar yordamida nanono‘lakchalar shakillanishi keng miqyosda rivojlanib bormoqda. Mikroorganizmlar zaharli, qattiq kimyoviy moddalardan va fizik-kimyoviy sintez uchun zarur bo'lgan yuqori…
Gen terapiyasi - bu organizm hujayralariga begona DNK yoki RNK nuklein kislotalarini kiritish orqali kasalliklarni davolash usuli hisoblanadi. Terapevtik ta’sir kiritilgan DNK yoki RNK tarkibidagi genetik ma’lumotlardan…
mazkur maqolada ona tili o‘qitish metodikasi haqida tushuncha berilib. Boshlang‘ich sinf o‘quvchilarini qanday chiroyli yozuvga o‘rgatish kerakligi haqida qisqacha mulohaza berilgan.
Ushbu maqolada xorijiy tillardan o’zbek tiliga kirib kelgan qurilish va muhandislikka oid atama va terminlarning amaliyotda qo’llanilishi, unga mosmuqobillarni topish muommolari va ularning yechimlari milliy…
Топонимлер тил лексикасиның бир бѳлеги сыпатында басқа сѳзлер сыяқлы тил нызамлықларына бойсынады, Соның менен бирге топонимлерде ѳзимиздиң миллий тилимизге тийисли болған фонетикалық, лексиакалық ҳәм морфологиялық…
XIX-XX asr boshlarida zargarlik buyumlarini ishlab chiqarish barcha savdo va hunarmandchilik markazlarida keng tarqalgan. Har bir katta ovullar o’zlarining zargari mavjud edi. Qoraqalpoq zargarlari o’z mahsulotlari…
Ushbu maqolada yer yuzida inson ta`sirida ozmi-ko`pmi o`zgarmagan yoki insonning bevosita yoki bilvosita ta`siri asoratini sezmagan landshaftlar deyarli qolmaganligi, ammo qaysi landshaft qay darajada antropogenlashgan…
Semiz oʻt (Portulaca oleracea L) Ushbu tadqiqotda biz P.oleraceaning botanika, anʻanaviy qoʻllanilishi, fitokimyosi, farmakologik qoʻllanilishi, farmakokinetikasi va xavfsizligi haqida batafsil maʼlumot beramiz.
Ushbu maqolada STEAM ta’lim tizimi va uning vazifalari, qanday ta’lim sohalarida qo’llash mumkinligi, boshlang’ich ta’limda STEAM texnologiyalaridan samarali foydalanishning metodik usullari bo’yicha tavsiyalar…
So`zlovchining asosiy fikr ichida yo`l – yo`lakay aytilgan fikrini anglatuvchi gap kiritma gap deyiladi. Kiritma gap o`zi kiritilgan gapning biror bo`lagiga mazmunan aloqador bo`lib, maxsus pauza bilan ajratiladi
Ushbu maqola mamlakatimizda badiiy, ma’rifiy, ilmiy-ommabop, tarbiyaviy, yoshlarning intеllеktual salohiyatini oshirishga qaratilgan adabiyotlarni chop etish, ular bilan ta’lim muassasalarini ta’minlash, milliy va jahon…
Ижтимоий омиллар таъсирида тил элементлари ўзгариб боради. Аввало нутқда, кейин эса тилда пайдо бўлувчи фарқликларни илмий жиҳатдан изоҳлаш натижасида социолингвистикага оид бир қатор назарий ва амалий масалалар ўз…
Республикамиз мустақиллиги шароитида бозор иқтисодиёти талабларидан келиб чиққан ҳолда пилла ва хом ипакнинг сифатини жаҳон андозалари даражасига кўтариш ўта долзарб вазифалардан ҳисобланади.
Ўзбекистонда вольфрам минерал хомашё базасининг ривожланиш тарихи ўз ичига учта босқични олади [2]. I босқич (1935-1960 йй.) – минерал хомашё базасининг ташкил топиши: вольфрам маъданли конларнинг очилиши, разведкаси ва…
В статье рассмотрены характеры метасоматических процессов в формировании апометатерригенного вольфрамового оруденения на примере месторождения Сарыкуль, в результате которых формируются метасоматически измененные…
Erta neonatal davrda aspiratsiya sindromi neonatologiyada hali ham dolzarb tadqiqot mavzusi bo'lib qolmoqda, klinik ahamiyatiga qaramay, yangi tug'ilgan chaqaloqlarda va chaqaloqlarda tug'ruqdan keyingi aspiratsiyaga…
Hozirgi kunda sintetik kimyoviy dori moddalarining va oziq-ovqat sanoatidagi turli xil sintetik qo‘shimcha va birikmalarning zaharliligini oldini olish uchun o‘simliklardan olingan tabiiy mahsulotlardan foydalanish…
Bugungi kunda jamiyatimiz taraqqiyoti bevosita o’sha jamiyatni axborotlashtirish bilan bog’liq bo’lib har bir davlat o’z axborotlash strategiyasini ishlab chiqish va uni amaliyotga qo’llashga katta ahamiyat bermoq lozim.
Maqolada landshaftlar va ularning oʼzgarishini geoekologik monitoring qilish, landshaftlar barqarorligini saqlash va atrof-muhitni muhofaza qilishning asosiy masalalari haqida fikr boradi. Oʻzbekistonda ekologik…
ushbu maqolada Pifagor teoremasining tarixi, teoremaning isboti, teoremaning teskari isboti haqida so`z yuritiladi.
Ushbu maqolada yer sayyorasining litosfera (tosh qobiq), gidrosfera (suv qobig`i), atmosfera (havo qobig`i), biosfera (hayot qobig`i)larining o`zaro bir biriga kirishuvi, o`zaro ta`siri, o`zaro aloqasi natijasida hosil…
O‘shbu maqolada boshlang‘ich sinf o‘qituvchisi muaffaqiyatli ish olib borishida uning nutqi shirin so‘zligi, har bir o‘quvchiga e’tiborli bo‘lishi va bolaning ichki dunyosiga kiraolishligi haqida gap boradi.
Ushbu maqolada ta’limda og‘zaki nutq ko‘nikmalarini shakllan-tirishda “Muloqot” texnologiyasining o‘rni va undan foydalanishning amaliy natijalari xususida fikr yuritilgan.
Ushbu maqolada biologiya fani hamda uning ijtimoiy fanlar bilan integratsiyasi haqida fikr va mulohazalar keltirilgan.
O’rgimchaklar turlari, ularning morfologik, antomik, fiziologik tuzilishi va klassifikatsiyasi haqida ma’lumot beriladi.
Biologiya darslarida korgazmali qurollardan foydalanish metodidan dars mavzusi koproq fiziologik, bioximik, ekologik mazmunga ega bolgan paytlarda foydalaniladi. Ko‘rgazmali metodda oquvchilar yangi organadigan mavzuni…