Известия Академии наук Республики Таджикистан. Отделение физико-математических, химических, геологических и технических наук, №1, 2013 г. |
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Скачать | Shabozov M.Sh., Langarshoev M.R. | 7-20 | The best approximation and exact value of mean widths for some classes entire functions in |
We find the exact inequalities for the best mean approximation of functions defined on the whole real axis by entire functions integrals containing continuity modules -th order derivatives of functions with positive weight. We calculate the exact values of the average -widths of certain classes functions defined by the averaged values of these moduli of continuity, limited given majorant. |
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Ключевые слова: наилучшее приближение; целая функция экспоненциального типа; средний v-поперечник; мажоранта; best approximation; entire function of exponential type; the mean v-widths; majorant. | |
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Скачать | Oliftaev N.F. | 21-31 | On the values of some classes of differentiable periodical functions in the space
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In this paper for averaged finite segment of -modulus continuity of -order are founded an exact inequality of Jackson-Stechkin type. For the classes of function which defined by -modulus of -order averaged values, the -widths in Hilbert space calculated. |
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Ключевые слова: наилучшее приближение; модуль непрерывность; ряд Фурье; n-поперечник; τ-модуль непрерывности; the best approximation; modulus of continuity; Fourier series; n-widths; τ-modulus of continuity. | |
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Скачать | Usmanov Z.D., Dovudov G.M., Kholmatova S.D. | 32-39 | |
Thanks to special coding of wordforms, the set of anagrams to.Tajik corpus is exhaustively described. Statistical data on the number of different anagrams with a specified number of items are received. Some anagrams with the highest number of wordforms are presented for discussion. |
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Ключевые слова: таджикский язык; словоформа; кодирование; анаграмма; распознавание; статистика; Tajik; word form; coding; anagram; recognition; statistics. | |
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Скачать | Graschenko L.A. | 40-46 | Application of modeling stop-list |
The paper discusses the content, scope, and methods of using the stop-list in the automated text processing systems of natural languages. The concept of model stop-list, the technique of its forming are introduced. Proposes four numerical indicators for marking and filtering stop-word dictionary. |
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Ключевые слова: стоп-словарь; естественный язык; стемминг; парадигма словоизменения; автоматическая обработка текста; stop-word list; natural language; stemming; inflection paradigm; automatic text processing. | |
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Скачать | Odinaev S., Makhmadbegov R. | 47-59 | Theoretical and experimental study of the dielectric properties of electrolyte solutions (Survey) |
The short overview and analysis of theoretical and experimental researches of the dielectric properties of electrolyte solutions have been given. It is shown that the basis of all the achievements of this researches are the formulas of Debye for the investigation of frequency dependence of the coefficients of dielectric susceptibility ε
(ω), coefficients of dielectric losses ε
(ω), loss tangent φ(u) and the Cole-Cole diagram. The generalization of these results with taking into account the contributions of structural relaxation to these factors, as well as the definition of the link y(τ) with the structure of the solution, i.e. with the radial distribution function g(r) is suggested. |
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Ключевые слова: коэффициенты диэлектрической проницаемости и диэлектрических потерь; коэффициент удельной электропроводности; частотная дисперсия; время релаксации; диаграмма Коула-Коула; coefficient of dielectric susceptibility and dielectric losses; coefficient of specific electroconductivity; frequency dispersion; relaxation time; Cole-Cole diagram of the dielectric susceptibility. | |
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Скачать | Davlytmamadova S.Sh., Shukurov T., Marupov R. | 60-66 | The spectroscopic properties of the rhizome rhodiola cold (
Schrenk) dependiny on the place of growth |
The article presents IR spectroscopic data of a rhizome rhodiola cold, growing in different regions of Tajikistan and different heights above the sea level. It is established that formation of a system of hydrogen interactions of a rhodiola depends on a place of growth and ecological status of an environment. The band of absorption of 1600 sm
reflects absorption of interfaced –С=С– interaction the substances in organs rhodiola, and traces of a weak band under 1680 sm
reflect >С=О interactions, which compose nucleus flavonoids. There is shown the absence of carbocsils groups in the biochemical compound of connection bodies of a rhodiola. |
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Ключевые слова: родиола; корневище; ИК-спектр; места произрастания; высота над уровнем моря; биосинтез; вещества; rhodiola; rhizome; IR-specter; places of growth; above the sea level; biosynthesis substances. | |
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Скачать | Kabilov M.M., Gulboev B.J., Sadriddinov P.B., Halimov I.H. | 67-75 | Numerical modeling of filtration combution of gases for the symmetry of the profiles of temperatura and concentration of components |
The numerical calculation of wave characteristics of filtration combustion of hydrogen-and methane-air mixtures in an inert porous medium with a symmetrical distribution of the medium temperature and the concentration of the components. Analyzes the speed of the combustion wave, the maximum temperature, the diffusion coefficient and the characteristic size depending on the speed of injection gas mixture |
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Ключевые слова: скорость волны горения; коэффициент диффузии; скорость вдува газа; the speed of the combustion wave; the diffusion coefficient; speed gas injection. | |
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Скачать | Karimov F.H. | 76-83 | COERCIVITY OF FERROMAGNETIC PLATES WITH SURFACE LINEAR INHOMOGENEITIES |
Based on the common principles of quantitative researches of ferromagnetic domain structures there the model of domain border passing through linear crystal magnetic inhomogeneity under the remagnetization of a thin ferromagnetic slab is under the investigation. The regularities found provided the grounds for developing the recommendations for the applied methods in nanotechnology as well as in the interpretation of rocks’magnetic properties. |
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Ключевые слова: доменная структура ферромагнетиков; доменные стенки; поверхностные магнитные неоднородности; domain structures of ferromagnets; domain walls; surface linear magnetic inhomogeneity. | |
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Скачать | Ahmedov Kh.M., Karimov Kh.S., Kabutov K., Akobirov A.A., Homidov I., Rahmatova Z., Akhmedov F. | 84-88 | The influence of temperature to electric properties of n-InP based on electrochemical cell |
The influence of temperature to electric properties of n-InP/OD/ITO electrochemical cell was investigated. It was found that open-circuit voltage, short-circuit current and output powers depend on temperature of the cell. |
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Ключевые слова: мощность; напряжение; ток; фотоэлектрические свойства; элемент; power; voltage; current; effect of temperature; cell. | |
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Скачать | Muhidinov Z.K., Bobokalonova M.R., Rahimov I.F., Shamsara O., Bobokalonov D.T., Liu L.S. | 89-98 | Piroxicam release kinetics from emulsion microcapsules of lm pectin and whey lactoglobulines |
The study describes release kinetics of piroxicam as model drug from developed two different LM-pectins and concentrate of lactoglobulin in condition mimicking gastrointestinal tract. It is shows that the drug release from CRS tailored from LM-sunflower pectin exhibit zero order kinetics in the condition of intestinal. The results demonstrate effectiveness of microcapsules system as sustained delivery system able to prolong drug release, which may reduce drug dose and its side effect. |
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Ключевые слова: НМ-пектин; лактоглобулин; системы с контролируемым высвобождением; кинетика высвобождения; пироксикам; LM-pectin; lactoglobulin; microcapsules; CRS; release kinetics; piroxcam. | |
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Скачать | Fayziev A.R., Elnazarov S.A. | 99-106 | Thermobarogeochemistry of the condition of formation of kuhilal deposit of noble spinel |
Data are provided about thermobarogeochemistry parameters of formation main minerals of Kuhilal deposit. It is established that crystallization of actually skarn minerals happened in the range of temperatures of 800-650°C and after skarn 690-600°C. |
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Ключевые слова: месторождение; Кухилал; включение; температура; твердая фаза; жидкая фаза; газовая фаза; deposit; Kuhilal; inclusion; temperature; solid phase; liquid phase; gas phase. | |
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Скачать | Mamadvafoev M.M., Dischuk Y.I. | 107-115 | Evaluation of perspectives of gold presence in uchkado ore field (Central Tajikistan) |
Taking in to account the geological structure, ore-controlling and ore-containing structures, type of mineralization, level of erosion section of gold-bearing zones and the degree of their study, the article describes methods as well as assessment of expected resources of gold for zones and Uchkado ore field in general. It is recommended to study in detail the ore field to assess gold presence in terms of industrial categories of reserves. |
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Ключевые слова: Центральный Таджикистан; Учкадинское рудное поле; поисковые работы; вторичные литохимические ореолы; рудные зоны; рудные тела; кварц-антимонитовые жилы; кварцево-сульфидная минерализация; корреляционная связь; уравнение регрессии; оценка золотоносности; запасы и прогнозные ресурсы золота; Central Tajikistan; Uchkado ore field; prospecting works; secondary lithochemical envelopes; ore zones; ore bodies; quarts-antimonite veins; quarts-sulfide mineralization; correlation; equation of regression; gold presence assessment; stocks and expected reserves. | |
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Скачать | | 125-128 | |
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