of National Academy of Sciences
of Tajikistan

Reports of the National Academy of Sciences
of Tajikistan

Доклады Академии наук Республики Таджикистан, том 57, №3, 2014 г.

Article title and abstractPages
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Tukhliev K., Beknazarov J.Kh.
About the best approximation of functions by summs Fourier-Chebyshev in [-1,1]
In the Hilbert space the exact inequalities of Jackson-Stechkin were obtained and connecting - the best approximation of by algebraic polynomials of degree were added due to V.A.Abilov and F.V.Abilov which are the generalized modulus of continuity th order where is some second order differential operator. For any clas of function defined by and majorant the exact values of different -widths in the space are calculated.

Key words: наилучшее приближение; суммы Фурье-Чебышёва; обобщённый модуль непрерывности; n-поперечники; the best approximation; summs Fourier-Chebyshev; generalized modulus of continuity; n-widths.

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Aydarmamadov A.G.
On the best approximation of analytic functions in weight Bergman’s space
In the weighted Bergman space for classes of analytic in the unit circle function defined by generalized modules continuity of higher order -th derivatives on argument are bounded by functions which satisfy certain constraints the exact values of various -widths were obtained .

Key words: аналитическая функция; обобщённый модуль непрерывности; наилучшее приближение; весовое пространство Бергмана; комплексный алгебраический полином; n-поперечники; analytical function; the generalized modulus of continuity of m-th order; best approximation; weight Bergman’s space; complex algebraic polynomial; n-widths.

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Safarov D.Kh.
Generalized elliptic system in halfspase, singular on its boundary
We consider the Dirichlet problem for the first order elliptic system in halfspase, singular on its boundary and it is receive condition of the necessary and sufficient for solvability.

Key words: необходимые и достаточные условия; разрешимость задачи Дирихле; сопряжённая система; эллиптическая система; сильно эллиптическая система; Generalized Elliptic system; strongly elliptic system; Dirichlet Problem; sol vability; necessary and sufficient.

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Amonulloev A., Qurbonov Kh.N., Shermatov N.
The representation of one canonical form by the compound nomogramms from equidistant points and algorithm of its construction
The article considers about the problem of representation’s system determine f =f +f =f +f =f +f the nomogramm from equidistant points also gives algorithm of determination of parameters of transformation of the nomogramm. For the determination of parameters of transformation, on the basis of relative positioning of binary fields of the nomogramm, the numerical algorithm allowing directly to find the settlement equations of elements of the nomogramm is given.

Key words: номограмма; алгоритм; параметры преобразования; каноническая форма; the nomogramm; algorithm; transformation parameters; an canonical form.

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Usmanov Z.D., Dovudov G.M.
Conceptual model of automatic morphological analysis of tajik word forms
Morphological analysis of tajik word forms is presented in a block-scheme form describing the concept of functioning parts of subsystems as well as the system in whole.

Key words: таджикский язык; словоформа; морфологический анализ; Tajik language; word form; morphological analysis.

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Khudoyberdiev Kh.A.
On an automatic conversion of a tajik text to the standard graphics
In the article the problem of converting a Tajik text, prepared with utilizing a set of non-standard fonts, in the text with the standard graphics is discussed. An algorithm of automatic conversion of a text is resulted, on the basis of which the program module of transformation of texts in office applications has been developed.

Key words: таджикский язык; шрифт; конвертирование; стандарт; автоматизация; Tajik language; font; conversion; standard; automation.

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Umarov N., Davlatmamadova S.Sh., Shukurov T., Usmonov A., Marupov R.
Influence of ecological factors on molecular structureformations of roots medicinal (L.) Pall
Method IR spectroscopy investigates influence of ecological factors of an environment of a place of growth on process of biosynthesis of physical-chemical properties of roots medicinal Melilotus oficinalis (L.) Pall., collected in Sogd areas of Republic Tajikistan. Calculated to energy of intermolecular interaction show, that on the formation of molecular structure Melilotus officinalis (L.) Pall. influences ecological factors of a place of growth.

Key words: донник; лекарственные растения; ИК- спектроскопия; экологические факторы места произрастания; энергия межмолекулярного взаимодействия; roots Melilotus officinalis (L.) Pall; medicinal plants; IR spectroscopic; ecological factors of a place of growth; energy of intermolecular interaction.

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Karimov Kh.S., Akhmedov Kh.M., Nisar Ahmed, Amjad Farooq, Rizvi Z.Y.
Photoelectric cell on the base of bulk heterojunction of organic semiconductors copper phthalocyanine and metal free phthalocyanine
In the article the properties of the photoelectric cell based on balk heterojunction of copper phthalocyanine and metal free phthalocyanine organic semiconductors were investigated. By vacuum sublimation the thin films of thickness of (200-300) nm of the copper phthalocyanine and metal free phthalocyanine blend were deposited on conductive glass (ITO) substrates. It was investigated I-V characteristics , dependences of current on intensity of light and absorption spectrum of the photoelectric cell in the range of wavelength 200-850 nm.

Key words: фотоэлектрический элемент; органический полупроводник; объёмная гетероструктура; фталоцианин меди; фталоцианин без металла; photoelectric; cell; organic; semiconductor; balk; heterojunction; phthalocyanine copper; metal free phthalocyanine.

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Vohidov M.M., Murodiyon A., Yusupov I.Kh., Safarov A.G., Azizov B.S., Safiyev H.S.
Study of electronic paramagnetic resonance-spectroscopic properties of anthracites of the “Nazarailok” before and after thermic treatment
By electronic paramagnetic resonance «EPR » method the spectroscopy properties of anthracite were studied. In the initial anthracites showed a lot of paramagnetic centers that give singlet signal are showing amount specters. It is installed that after thermic treatment in the anthracites new components with the specific properties, that can absorb high-frequency electromagnetic fields are appeared.

Key words: метод ЭПР; количество парамагнитных центров; антрацит; свойства; EPR-spectroscopy; anthracites; properties; paramagnetic centers.

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Umarov M.A., Ganiev I.N., Mahmadulloev H.A., Berdiev A.E.
Impact on aluminum oxidation kinetics lead in solid state
Thermo gravimetric method studied the interaction of an alloy of lead and aluminum with oxygen in the range of 473-573 K. The kinetic parameters of the oxidation process. It is shown that the addition of aluminum reduce the rate of oxidation, which is accompanied by an increase in value of the apparent activation energy of oxidation of 16.9 to 38.1 kJ / mol.

Key words: сплав Pb-Al; термогравиметрический метод; кинетика окисления; истинная скорость окисления; энергия активации; alloy Pb-Al; thermal gravimetric method; the oxidation kinetics; the real rate of oxidation; the activation energy.

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Sabirov A.A.
New family of carboniferous foraminifera
In order Earlandiida a new family of carboniferous foraminifera Darjellidae Sabirov, fam. nov. determined, including genera Darjella and Lugtonia.

Key words: фораминиферы; систематика; карбон; foraminifera; synonymity; Carboniferous.

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Fazilov A.R., Kodirov A.S., Stepanova N.N.
Research of role of solid runoff in the formation zone of the Vakhsh river
Solid and liquid runoff data’s of the Vakhsh river are analyzed. The character, directedness, intensity, degree and extent of solid runoff formation in the formation zone of this river are identified.

Key words: бассейн реки; жидкий и твёрдый стоки; эрозия; мутность; river basin; liquid and solid runoff; erosion; turbidity.

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Zahra Darab, Yakubova M.M., Yuldoshev Kh., Khamrabaeva Z.M.
Investigation of Antimutagenic and anticancer activities of Roscoe rhizomes extracts
In the present study the dried rhizomes of Zingiber were extracted with water, еthanol, and n-hexane. The antimutagenicity of these extracts was assayed against the mutagenicity of sodium azide by Ames test using tester strain of Salmonella typhimurium (TA100). The antimutagenicity of the extracts was found in the order of water-ethanol-n-hexane. All the extracts decreased sodium azide mutagenicity in S. typhimurium strain (TA100) and showed strong antimutagenicity. Also by adding microsome of rat liver (S9) the anticancer effect of extracts was proved.

Key words: Zingiber officinal Roscoe; антимутагенность; антиканцерогенность; тест Эймса; Zingiber officinal Roscoe; antimutagenicity; anticancer; Ames test.

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Olimov N.Kh., Juraev Sh.M., Eltanazarov M.D., Sobirova M.M.
Frequency of occurrence of ST segment depression in patients with postinfarction cardiosclerosis with painless form of myocardial ischemia after coronary Artery Stenting
In the article have shown that in patients with postinfarction cardiosclerosis with painless form of myocardial ischemia after stenting of coronary arteries can decrease to 75% frequency of occurrence ischemic ST-segment depression. This leads to a decrease in the potential development of arrhythmias, minimizes the risk of not only re-myocardial infarction, but also sudden death in these patients.

Key words: постинфарктный кардиосклероз; безболевая ишемия миокарда; стентирование коронарных артерий; postinfarction cardiosclerosis; painless myocardial ischaemia; сoronary аrtery stenting.

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Dodkhoeva M.F., Karimova U.A., Olimova L.I., Kodirova S.G.
Obstetric and perinatal outcomes in prelabour rupture of membranes
In article a retrospective analysis data of 620 labour cases of women with prelabour rupture of membranes (PROM) are presented. In result of study the course of pregnancy in women with PROM detected that the most frequent obstetric complications were early pregnancy toxemia (49.51% cases) and threatened miscarriage (16.93% cases). Labour in women with PROM is associated with an higher risk of soft tissue injury of the birth canal, infection rate of the mother and fetus, and also increased risk of operative labour.

Key words: дородовый разрыв плодных оболочек; доношенная беременность; выжидательная тактика; активная тактика; prelabour rupture of membranes; full-term pregnancy; expectant management; active management.