Известия Академии наук Республики Таджикистан. Отделение физико-математических, химических, геологических и технических наук, №4, 2016 г. |
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Скачать | Safarov D.S., Zamonov M.Z. | 7-14 | On the manifold of solutions of the equations of generalized analytic functions with deviating argument |
In the article by considering some particular solutions of equations of generalized analytic functions with a deviating argument and substituting them into the equations, derive the transcendental equations depending on properties of the roots, receives the manifold of solutions which contains one-periodic or doubly periodic analytical functions with fundamental periods. |
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Ключевые слова: уравнение обобщённых аналитических функций; отклоняющийся аргумент; многообразие решений; equation of generalized analytic functions; deviating argument; manifold of solutions. | |
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Скачать | Jurakhonov O.A. | 15-25 | Some extremum problems of approach of functions of two variables the sums Fourier-Ermita in space |
In work the exact are calculated least upper bounds of approximation of functions of two variables the triangular the partial sums of a double series Fourier-Ermite on a class of functions in space where -an operator Hermite of the second order. Also exact inequalities of type are received Jackson-Stechkina on sets in which the values of the best polynomial approximations are estimated from above as through continuity modules -th an order. |
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Ключевые слова: наилучшие приближения; модуль непрерывности; ряд Фурье-Эрмита; K-функционал; неравенство; best approximation; modulus of continuity; sums Fourier-Ermita; K-functional; inequalities. | |
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Скачать | Zaripov S.K. | 26-37 | About one class first order non model integro-differential equation with one singular point in the kernel |
In this work for the one class first order non model integro-differential equation with one singular point in the kernel, obtained integral representation manifold solution by two arbitrary constants. The method of solving this problem can be used for the solving of higher order non model integro-differential equation with singular coefficients. |
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Ключевые слова: интегро-дифференциальные уравнения; граничные сингулярные точки; многообразия решений; интегральные представления; интегральные уравнения; integro-differential equation; boundary singular points; manifold solution; integral representation; integral equation. | |
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Скачать | Salikhov T.Kh., Mahmalatif A., Khodjaev Yu.P. | 38-49 | Features of excitation of the second harmonic of nonlinear photoacoustic response in optically inhomogeneous two-layer samples |
A theory of second harmonic generation (SH) of a nonlinear PA signal in optically inhomogeneous two-layer samples is proposed. For the most interesting cases, the dependencies of the amplitudes and phases of this signal on the frequency of modulation of the incident beam and the thermal coefficients (TC) of thermophysical and optical parameters, including the optical absorption coefficient, are established. |
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Ключевые слова: фотоакустика; тепловая нелинейность; двухслойные системы; нелинейный фотоакустический отклик; вторая гармоника; оптическая неоднородность; photoacoustic; thermal nonlinearity; two layers systems; nonlinear photoacoustic response; second harmonic; optical inhomogeneous. | |
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Скачать | Tuichiev Sh., Rashidov D., Shoimov U., Tuichiev L., Aknazarova Sh. | 50-57 | The supramolecular rearrangements in elastomers under external influence |
X-ray diffraction, optical microscopy, thermal physics were used to study the changes in the supramolecular structure of samples of bloccopolymers SBS under influence of external factors. Intraibrillyar and interfibrillar periodicity are detected. A clear reversible transitions between the unoriented amorphous and the oriented amorphous stats under the influence of factors such as temperature, strain, radiation and modification of fullerene Cwere studied; a model of the supramolecular structure of elastomers and their components were proposed. |
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Ключевые слова: эластомер; рентгенография; оптическая микроскопия; облучение; термодеформационное испытание; elastomer; X-ray; optical microscopy; irradiation; thermodeformation test. | |
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Скачать | Kalandarbekov I., Nizomov J.N., Kalandarbekov I.I. | 58-64 | Comparative analysis of different types seismic multi-storey buildings |
In this article, based on a literature review conducted by the various types discussed seismic isolations devices and shows the effectiveness of these devices in the construction of multi-storey buildings. |
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Ключевые слова: сейсмостойкость сооружений; сейсмоизоляция; сейсмозащита; землетрясения; динамические характеристики; колебательный процесс; резинометаллические опоры; частотный спектр; earthquake-resistant structures; seismic isolation; seismic protection; earthquake; dynamic characteristics; the oscillation process; rubber mounts; the frequency spectrum. | |
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Скачать | Karimov Kh.S., Hina Gokhar, Akhmedov Kh.M., Adnan Noor, Faisal Khan M. | 65-70 | Development and testing of noninductive charge controller in the system of solar photovoltaic installation |
Designed, manufactured and tested a non-inductive charge controller for solar photovoltaic system installation. The system includes the installation of solar photovoltaic module, non-inductive charge controller and battery. Non-inductive charge controller manufactured using only capacitors as charging elements that makes it economical. The circuit diagram of the installation with non-inductive charge controller, the current-voltage characteristics and power-voltage relationship of the module, the output voltage-input voltage relationship of non- inductive charge controller are presented. It is shown that when the input voltage of non- inductive charge controller is in the range of 8-20 V, the output voltage is in the range of 13.5-14 V. The installation can be used for feeding of small power loads of electricity. |
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Ключевые слова: фотоэлектрическая установка; микроконтроллер; аккумуляторная батарея; безындуктивный контроллер заряда; напряжение холостого хода; ток короткого замыкания; photoelectric installation; module; microcontroller; battery; non- inductive charge controller; open circuit voltage; short circuit current. | |
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Скачать | Nazarov F.A., Qurbonov A.S., Nazarov Sh.B., Misratov Zh.A., Bahridinova G.U. | 71-75 | Comparetive assessment of boron-silicate ores decomposition with acids and bases |
The study of decomposition process of burnt boron-silicate concentrate with the acids as chloride, nitrate, acetate and base is presented. The optimal parameters for the decomposition of boron-silicate ores by the acids and base are identified. |
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Ключевые слова: соляная кислота; азотная кислота; уксусная кислота; боросиликатный концентрат; разложение; технологическая схема; chloride acid; nitrate acid; acetate acid; boron-silicate concentrate; decomposition; technological scheme. | |
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Скачать | Azizkulova O.A., Egamberdiev A.Sh., Abdulhaeva M.I. | 76-83 | Complexation with molybdenum (V) 1-phenil-2,3-dimetilpirazolin-5-tionnum in the 6.5 mol/l HCI at 308 K |
The process of complexes generation molybdenum (V) with 1-phenyl-2,3-dimetilpirazolin-5-tion in the 6.5 mol / l HCI at 308 К. The molybdenum (V), the ligand forms a four integrated form. Defined constant values of entities four integrated forms of generation in the studied system. |
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Ключевые слова: молибден (V); комплесообразование; 1-фенил-2; 3-диметилпиразолин-5-тион; константа образования; molybdenum (V); complexation; 1-phenyl-2; 3-dimethylpirazolin-5-tion; stability constant. | |
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Скачать | Negmatullaev S.H., Juraev R.U., Ulubieva T.R. | 84-94 | The manifestation of strong and perceptible earthquakes on the territory of Tajikistan in 2015 |
Presents data on Tajikistan's strong earthquakes that occurred in the year 2015. The description and analysis of the devastating earthquakes of October and 26 December 7, the character of manifestations on the surface and their are confinement to the geological structures. The maps of the earthquakes intensity isoseists compiled. The possible causes of inaccuracy in determination of epicenters of earthquakes and vulnerability of local buildings in the epicentral zone of Sarez earthquake December 7, 2015 defined. |
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Ключевые слова: эпицентр землетрясения; магнитуда; интенсивность землетрясения; изосейста; сейсмограмма; макросеймика; earthquakes epicenter; magnitude; the intensity of the earthquake; isoseist; seismogram; macro-seismic. | |
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Скачать | , , , , , , | 95-97 | |
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Скачать | | 98-122 | |
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Ключевые слова: . | |
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Скачать | | 123-132 | |
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Ключевые слова: . | |
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