OAK jurnallaridan yig‘ilgan 140147 ta ilmiy maqola: sarlavha, mualliflar, annotatsiya, kalit so‘zlar, DOI va tayyor iqtibos formatlari.
- Synthesis of Monosubstituted Purpurins and Their Biological Activity
Т. V. Kharlamova, Роза Б. Сейдахметова, К. Д. Пралиев · Химия природных соединений · 2019-07-01
- Neoflavonoid Angelicin Derivatives
Т. В. Шокол, Виктория С. Москвина, E. K. Glebov, V. P. Khilya · Химия природных соединений · 2019-07-01
- Chemical Constituents of the Essential Oil Extracted from Phoebe bournei
Qi Zhang, Liping Ning, Wen Ding, Huizi Xing, Qian Zhou, Zhiting Wei · Химия природных соединений · 2019-07-01
- A New Eremophilane Sesquiterpene with Nematocidal Activity from Ligularia veitchiana
Haibo Wu, Tingting Liu, Wenjie Deng, Jing Zhang, Luowenlei Yang · Химия природных соединений · 2019-07-01
- Anti-Ache Benzylbenzofuran Derivatives from Silene conoidea
Rongrui Wei, Qinge Ma, Guoyue Zhong · Химия природных соединений · 2019-07-01
- A New Kavalactone Dimer from Piper methysticum
Jian Xiang Yang · Химия природных соединений · 2019-07-01
- Chemical Constituents of Limonium gmelinii Roots
Amanguli Tuohongerbieke, Aida Kaiyrkulova, Yu Guan, Jun‐Jie Zhu, L. L. Shi, Gulnar Sabir, Haji Akber Aisa · Химия природных соединений · 2019-07-01
- C-Glycosyl Flavones from Two Eastern Siberian Species of Silene
Д. Н. Оленников, Н. К. Чирикова · Химия природных соединений · 2019-07-01
- Chemical Composition and Insecticidal Activities of the Essential Oil from Fruits of Euonymus schensianus
Shuliang He, Yamei Zhang, Yuhe Ma, Dongsheng Wei, Jianchun Qin · Химия природных соединений · 2019-07-01
- Two New Sesquiterpene Lactones from Ixeris sonchifolia
Wei Cai, Jiayu Zhang, Ying Liu, Jianqiu Lu · Химия природных соединений · 2019-07-01
- Acetylated Nucleoside Derivatives from a Shallow-Water Marine Bivalve Codakia orbicularis
Francesca Goudou, Ali Al‐Mourabit, Céline Moriou, Olivier Gros, Philippe Petit · Химия природных соединений · 2019-07-01
- Composition of Essential Oils from the Leaves, Stems, and Flowers of Vernonia condensata of Pernambuco, Brazil
Carlize Lopes, Cláudio Augusto Gomes da Câmara, Marcílio Martins de Moraes · Химия природных соединений · 2019-07-01
- Flavonoids from the Flowers of Aquilaria agallocha
C. Y. Chen, C. Y. Chen, Y. S. Tsai, C. T. Chen, C. T. Chen, H. C. Yeh, H. T. Li · Химия природных соединений · 2019-07-01
- Ecdysteroids of Silene repens from Eastern Siberia
Д. Н. Оленников · Химия природных соединений · 2019-07-01
- Pedicine, a New Alkaloid from Haplophyllum pedicellatum
Kh. A. Rasulova, Х. М. Бобакулов, M. A. Eshonov, Н. Д. Абдуллаев · Химия природных соединений · 2019-07-01
- Synthesis and Antioxidant Properties of Hydroxycinnamic Acid Derivatives Containing Isobornyl Substituents
I. A. Dvornikova, Е. В. Буравлев, И. В. Федорова, О. Г. Шевченко, I. Yu. Chukicheva, А. В. Кучин · Химия природных соединений · 2019-07-01
- Compounds from Lotus corniculatus
Xiaoqiang Li, Yiyu Yang, Lijuan Chen, Yan Zhang, Yegao Chen · Химия природных соединений · 2019-07-01
- Chemical Constituents of the Flowers of Michelia figo
Chien‐Liang Lin, C. L. Kao, S. T. Huang, H. T. Li, C. Y. Chen · Химия природных соединений · 2019-07-01
- Chemical Composition and Antimicrobial Properties of Essential Oil Anaphalis triplinervis from Western Himalaya
Rajni Sharma, Harpreet Kaur, Manjeet Singh, Manoj Kumar, Rabia Sharma, G. C. Shah, Pankaj Sharma · Химия природных соединений · 2019-07-01
- Synthesis of a 1,2,3-Thiadiazole of Butyl Glycyrrhetinate
Л. А. Балтина, Л. А. Балтина, Л. А. Балтина, Т. Р. Нугуманов, Л. А. Балтина, Т. Р. Нугуманов · Химия природных соединений · 2019-07-01
- Serratanes from Whole Plant of Palhinhaea cernua
Lin‐Fu Liang, Qiu-Han Chen, Jianghao Xu, Ting Liu, Xiang-Nen Song, Hong-Yang Chen, Hong Chen · Химия природных соединений · 2019-07-01
- Gliotoxin Analogues from Endophytic Penicillium sp. of Eucommia ulmoides and Their Antimicrobial Activity
Hongchi Zhang, AN Zhi-peng · Химия природных соединений · 2019-07-01
- Two New Naphthalene Derivatives from the Fermentation Products of an Endophytic Fungus Phomopsis sp.
Xuemei Li, Yicheng Zeng, Jianhua Chen, Ye‐Kun Yang, Jing Li, Lin Ye, Gang Du, Min Zhou, Qiu‐Fen Hu, Guangyu-Yang, Haiying Yang, Yan-Qing Duan · Химия природных соединений · 2019-07-01
- A New Flavonoid Glycoside from Ligularia fischeri
Xia Liu, Jing Li, Jun Li, Qian Liu, Meng Xun · Химия природных соединений · 2019-07-01
- Chemical Constituents of Lepidium sativum Seeds
Aida Kaiyrkulova, Jun Li, Haji Akber Aisa · Химия природных соединений · 2019-07-01
- Antioxidant Activity and Phenolic Profile of Turkish Celtis tournefortii
İbrahim Halil Geçibesler · Химия природных соединений · 2019-07-01
- Mathematical model and algorithm for calculating complex words in the karakalpak language
Abidova, Shaxnoza · ТАТУ хабарлари · 2019-06-30
The article examines the morphology of the Karakalpak language, which belongs to the Kipchak group of the Turkic language family. The forms of word formation in the Karakalpak language, their sequences and the affixes…
- Theoretical study of spin-dependent size quantization in a two-barrier semiconductor structure
Расулов, В.Р., Расулов, Р.Я., Султонов, Р.Р., Ахмедов, Б.Б. · O‘zbekiston fizika jurnali · 2019-06-24
The spin-dependent size quantization of the energy spectrum of current carriers through a two-barrier semiconductor structure is theoretically researched. In this case, the spin-orbital splitting is taken into account…
- Determination of the critical concentration of mycelo formation of sodium DODEcyl sulphate in aqueous solutions of ethanol by conductometry and pH metrics
Гофуров, Ш.П., Бозорова, Д.Т., Коххаров, А.М., Исмаилова, О.Б. · O‘zbekiston fizika jurnali · 2019-06-21
Concentration dependences of sodium dodecyl sulfate (SDS) in the concentration range of 0.005−0.03 mole (with the step of 0.001 mole) in water-ethanol solutions with a percentage ratio of 100:0, 92:8, 85:15, 70:30 were…
- New classification of globular star clusters
Таджибаев, И.У., Нуритдинов, С.Н. · O‘zbekiston fizika jurnali · 2019-06-21
In connection with the lack of a satisfactory solution of the problem of globular cluster’s classification (GC) of stars we have modelled apparent density by a function with three free parameters. Basic statistical…
- Formation of charged states on the surface of ZnO during low-energy irradiation by electrons
Шаропов, У.Б., Курбанов, С.С., Атабаев, Б.Г., Джаббарганов, Р., Мирзахмедов, И., Худайкулов, Ф., Жабборов, Х. · O‘zbekiston fizika jurnali · 2019-06-21
Defect formation on the surface of zinc oxide is investigated using the low-energy electrons by total current spectroscopy method. The formation of cation and anion vacancies on the surface is shown. The energy…
- Simulation of solar pumped highly neodymium-doped ceramic yag disc laser
Payziyev, Sh., Makhmudov, Kh., Shayimov, F. · O‘zbekiston fizika jurnali · 2019-06-21
Прозрачные керамические YAG-лазерные материалы с высоким содержанием неодима исследуются для применения в преобразовании солнечной энергии в энергию лазерного излучения с помощью метода имитации трассировки лучей…
- Triplication of the frequency of the ultra short laser pulse in argon
Рузиев, З.Ж., Олимов, А.Н., Юсупов, Д.Б., Сапаев, У.К. · O‘zbekiston fizika jurnali · 2019-06-21
Numerical calculation was used to analyze the generation of the third harmonic in argon gas. The duration of the main pulse was chosen to be 5 fs. The role of gas ionization and high-order dispersion effects (up to…
- Study of the spectra of characteristic energy losses of free Si-Cu nanofilm systems
Касимов, И.О., Умирзаков, Б.Е., Исаханов, З.А., Рузибаева, М.К., Курбанов, Р. · O‘zbekiston fizika jurnali · 2019-06-21
In this paper, experimental results obtained by the method of spectroscopy of the characteristic energy loss of electrons are presented to study the composition and electronic structure of Cu(100) with silicon surface…
- Obtaining thin hmis films by magnetron spraying
Камилов, Т.С., Рысбаев, А.С., Камардин, А.И., Бурков, А.Т., Новиков, С.В., Клечковская, В.В., Орехов, А.С., Игамов, Б.Д., Бекпулатов, И.Р. · O‘zbekiston fizika jurnali · 2019-06-21
The technique for producing thin films of higher manganese silicide by magnetron sputtering is considered. The films were obtained on dielectric substrates: sitall СT-35-2 and mica. New results on the structural and…
- New photomagnetic semiconductor material
Мавлонов, Г.Х., Шергозиев, Ш.Б. · O‘zbekiston fizika jurnali · 2019-06-21
It has been found that silicon with magnetic nanoclusters is basis for new photomagnetic material possessing high sensitivity both to background and to IR-light. In enough narrow interval of background illumination…
- Photosensitive MULTILAYER SEMICONDUCTOR Au-νGaAs:O-nCdS-nInP-Au-STRUCTURES WITH FILM HETEROLAYERS
Ёдгорова, Д.М., Гиясова, Ф.А., Кулиев, Ш.М., Якубов, А.А., Муродуллаева, Г., Шертоев, Ж.Х. · O‘zbekiston fizika jurnali · 2019-06-21
The photosensitive sandwich-structured Au-vGaAs:O-nCdS-nInP-Au semiconductor formed by vacuum deposition of thin films of cadmium sulfide and indium phosphide on a single-crystal substrate of gallium arsenide has been…
- Simulation of the growth process and control of the formation of silicon nanoparticles in a dust plasma
Ашуров, Р.Х., Умирзаков, Б.Е., Оксенгендлер, Б.Л., Ротштейн, В.М., Ашуров, Х.Б. · O‘zbekiston fizika jurnali · 2019-06-21
A physical model is proposed for the growth of silicon nanoparticles in the form SiH+3 →SiH03 based on the Mott-Gurney scheme. The concept of the formation of silicon nanoparticles from monosilane was developed, taking…
- Experimental research and computer simulation of multi-cascade composite transistors for stabilizing the operating mode of output cascades of radio engineering devices
A.A Yarmukhamedov, A Zhabborov, B Turimbetov · Тошкент давлат техника университети хабарлари · 2019-06-11
Experimental results and computer simulation of multi-stage composite transistors are presented. To study the volt - ampere characteristics of multistage composite transistors, a dialogue computer simulation program…
- Analysis of moni sis of monitoring of the a oring of the AT-3 autotransform transformator in t or in TashTES mode
Farxod Isakov · Тошкент давлат техника университети хабарлари · 2019-06-11
The article considers the results of the analysis of autotransformers operation mode monitoring. The time diagram of active load current and oil temperature of autotransformer TashTES AT-3 is established and during one…
- Obtaining some thermod aining some thermodynamic parameters containing me aining metacrylate and all te and allyl groups con yl groups containing in composition
M.I. Abdukakhkharova, A. Ismailov, U Mirzaev, Rovshan Ismailov · Тошкент давлат техника университети хабарлари · 2019-06-11
The article discusses the preparation of some thermodynamic parameters characterizing the final product of complex radical polymerization of amino alkyl acrylate derivatives containing both methacrylate and alkyl groups…
- Approximation model of a t tion model of a typical mech ypical mechanical objec anical object with distributed parameters
Andrey Anatolievich Verlan, M.V. Sagatov, D. K. Karimova, U.S. Fayzullaev · Тошкент давлат техника университети хабарлари · 2019-06-11
. The article discusses the method of approximation transformations for the study of a typical mechanical object with distributed parameters. A mathematical description of an object with distributed parameters, which is…
- Analysis and trends in the devel sis and trends in the development of models for t of models for studying therm ying thermal physical proper sical properties of solid and ties of solid and disperse substances
A. A. Abdurakhmanov, Aziz Rashidov, M Мakhmudjanov · Тошкент давлат техника университети хабарлари · 2019-06-11
- Obtaining some thermod aining some thermodynamic parameters containing me aining metacrylate and all te and allyl groups con yl groups containing in composition
Kh Akhmedov, Zh.M. Bekpulatov, G. K. Solijonova, N.Z. Sharifova · Тошкент давлат техника университети хабарлари · 2019-06-11
The article discusses the results of studying the material composition and the development of technology for processing gold-bearing sulfide ore samples. The material composition of the ore samples was studied by…
- Influence of the nature of the grind on toughness of the paper
N Atakhanova, З. Р. Галимова, K Babahanova · Тошкент давлат техника университети хабарлари · 2019-06-11
Influence of the nature of the grind is considered In article on mechanical characteristic of the paper on base cotton with different percent accompaniment of the wheat cellulose. The Known that process of the milling…
- Effect of in t of intermedi termediate connec te connections on the tions on the generator`s st or`s static stability
Safar Shernazarov · Тошкент давлат техника университети хабарлари · 2019-06-11
This article provides the influence of the active, inductive capacitive load on the static stability of synchronous generators and compiled the angular characteristics of the generator power at various loads. When a…
- Development of a high-speed algoritm of neurological conclusion
Isamiddin Siddikov, D Yadgarova · Тошкент давлат техника университети хабарлари · 2019-06-11
One of the ways to increase the efficiency of the process of managing continuous dynamic objects is to develop new or improve existing control systems based on modern methods involving the achievements of information…
- Decompositional method for modelling and studying pulse-wid pulse-width automatic con tic control sy trol systems based on stems based on dynamic graphs
A Kadirov, D Kadirova, А. Д. Назаров · Тошкент давлат техника университети хабарлари · 2019-06-11
Systems with pulse-width modulation are essentially non-linear automatic control systems. The complexity factors of pulse-width systems include multivariable, the multirate nature of the pulse-width modulators work, and…
- Solution of the problem of fuel combination in maintenance
B Tulaev, H. A. Viarshyna, Jakhongir Mirzaabdullaev, J Khakimov · Тошкент давлат техника университети хабарлари · 2019-06-11
In article, the solution of problem of the combined use of fuel in operation is considered. It is shown that during the operation of the gasoline automobile engine the requirement to octane number of fuel changes…
- Method for primary processing of here silkworm cocoons by using infrared radiation and elastic waves
J Safarov, Shakhnoza Sultanova, D Samandarov · Тошкент давлат техника университети хабарлари · 2019-06-11
The article discusses the results of an experimental study of the primary processing of silkworm cocoons. In the laboratory of the department of Tashkent State Technical University a full-scale test was carried out for…