of National Academy of Sciences
of Tajikistan

Reports of the National Academy of Sciences
of Tajikistan

Доклады Академии наук Республики Таджикистан, том 56, №7, 2013 г.

Article title and abstractPages
Полный текст статьи

Yusupov G.A., Shabozova A.A.
Exact estimates of approximate integration of curvilinear integrals of the first kind on some classes functions and curving lines
For approximate computation of the curvilinear integrals of the first kind of complicated quadrature Simpson’s formula is constructed and for classes differentiable functions, which assigned by the modulus of continuity, in the error estimate is found.

Key words: криволинейные интегралы первого рода; усложнённая квадратурная формула Симпсона; модуль непрерывности; curvilinear integrals of the first kind; the complicated quadrature Simpson’s formula; modulus of continuity.

Полный текст статьи

Tukhliev K.
On the best polynomial approximation of periodic function in and widths of some classes function
The exact ineqaulity of Jeckson-Stechkin types which are for averaged with weight of special modulus of continuity th order defined with help of operator Steklov For some classes function in specified by means of characteristics of smoothness, calculated the value of different -widths.

Key words: периодические функции; модуль непрерывности m-го порядка; наилучшее приближение; оператор Стеклова; periodic function; modulus of continuity of m-order; the best approximation; Steklov operator.

Полный текст статьи

Saidusaynov M.S.
The best linear methods of approximation in the weighted Bergman space and exact values of widths for some classes of analytic functions
In this paper were obtained a results related to calculation an exact values of different -widths for analytic classes functions in the unit disk and the best linear method of approximation for considered classes functions in the weighted Bergman space was built.

Key words: интеграл Лебега; линейный оператор; наилучшее приближение; n-поперечники; наилучший линейный метод; Lebegue integral; linear operator; the best approximation; n-widths; the best linear method.

Полный текст статьи

Safarov D.S.
Theorems of Abel for a the double periodic solutions of the elliptic systems of second order
In the work given analogy theorem of Abel for double periodic solutions of one elliptic systems of second order.

Key words: эллиптическая системы; двоякопериодические решения; уравнения; функция; задача; elliptic systems; double periodical solutions; equations; function; problem.

Полный текст статьи

Bakhtovarshoev A.Sh.
A statistical distribution of letters in shughnan texts with one new alfabets
In this article are established a statistical distribution of letters in Shughnan texts with one new alphabets.

Key words: шугнанский язык; частоты букв; алфавит на расширенной кириллице; Shughnan language; frequencies of letters; the alphabet on expanded Cyrillics.

Полный текст статьи

Soliev L.
Phase balance of system Na,K,Mg,Ca//SO , Cl-H O at 50°С in area cristallization langbeinite (K SO ·2MgSO )
By a method of compilation are investigated of phase balance of system Na,K,Mg,Ca//SO ,Cl-H O at 50°С in area cristallization langbeinite (K SO . 2MgSO ). Is established, that langbeinite as balance of phases of the investigated system at 50°С 33 monoalternative curves and 22 divariant of fields participate in formation 16 monoalternative curves of points. The fragment of the diagram phase balance of the investigated system in area cristallization langbeinite is constructed.

Key words: метод трансляции; фазовые равновесия; диаграмма; нонвариантные точки; моновариантные кривые; дивариантные поля; лангбейнит; a method of compilation; phase of balance; diagram; invariant of a point; monoalternative curve; divariant fields; langbeinite.

Полный текст статьи

Sodatdinova A.S., Mabatkadamova K.S., Safarmamadov S.M., Aminjanov A.A.
Connecting complexes Ag with N,N-ethilenthiourea at temperatures 288-328 K
A potentiometer method is study the process complexes generation of silver (I) with N,N -ethilenthiourea at temperatures 288…328 К. It is set that in an interval 288…328 К silver (I) with N,N - ethilenthiourea generation three complex forms. It is shown that with the increase of temperature diminish general constants of stability all appearing solutions of complex forms.

Key words: серебро; N,N -этилентиомочевина; комплексообразование; устойчивость; silver; N,N -ethilenthiourea; complex generation; stability.

Полный текст статьи

Moradi R., Hozhiboev Yu., Rahmonov R.O., Kukaniev M.A.
Reaction of 2-methyl-5-oxo-5H-6-carboxylate-7-phenyl-1,3,4 –thiadiazolo-[3,2-a]-pyrimidine with amine derivatives
This work presents the synthesis of a 2-methyl-5-oxo-5H-6R-amido derivatives 7-phenyl-1,3,4-thiadiazolo-[3,2-a]- pyrimidine, which was prepared by reacting 2-methyl-5-oxo-5H-6 –ethylcarboxylate-7- phenyl-1,3,4-thiadiazolo [3,2-a]-pyrimidine derivatives amine and structure of the obtained compounds are installed H NMR, C and IR – spectroscopy.

Key words: 2-метил-5-оксо-5Н-6-R-амидопроизводные; 7-фенил-1,3,4-тиадиазоло[3,2-а]пиримидин-2-метил-5-оксо-5H-6-этилкарбоксилат; 7-фенил-1,3,4-тиадиазоло-[3,2-а]-пиримидин; взаимодействие; реакция; 2-methyl-5-oxo-5H-6-R-amide derivatives; 7-phenyl-1,3,4-thiadiazolo-[3,2-a]-pyrimidine; 2-CH -5-oxo-5H6-ethylcarboxylate; 7-phenyl-1,3,4-thiadiazolo-[3,2-a]-pyrimidin; interaction; the reaction.

Полный текст статьи

Gorshkova R.M., Rahimov I.F., Muhidinov Z.K., Khalikova M.D., Mahkamov Kh.K., Olimov Z.M., Khalikov D.Kh.
Cupper bindibg activity of pectic polysaccharides

Key words: пектиновые полисахариды; пектиновые вещества; микрогель; сорбционная ёмкость; изотермы сорбции; pectic polysaccharides; pectic substances; microgel; exchange capacity; adsorption isotherm.

Полный текст статьи

Ibrohimov N.F., Ganieva N.I., Berdiev A.E., Ganiev I.N.
Influence of yttrium on the oxidation kinetics hard alloy АMr2
Thermogravimetric method investigated the interaction of the alloy Al +2.0% Mg, containing yttrium with oxygen in the range of 673…873 K, calculated apparent activation energy of the oxidation process. Yttrium additions to 0.1 wt.%. Decrease the rate of oxidation, which is accompanied by an increase of the apparent activation energy of the oxidation of 39.3 to 92.1 kJ/mol.

Key words: сплав АMr2; иттрий; термогравиметрический метод; кинетика окисления; истинная скорость окисления; энергия активации; alloy АMr2; yttrium; thermogravimetric method; oxidation kinetics; the true rate of oxidation; the activation energy.

Полный текст статьи

Juraev T.J., Gazizova E.R., Toshev M.T., Muhamedov F.T.
Crystal defects as a carrier of hereditary characteristics in solids
Using the theory crystallization and four-electron rule full-valencechemical elements and their compounds showed that the defects occur during the solidification of crystals, for example, chemical elements or compounds that act as elements creators carriers of hereditary traits and genetic information.

Key words: дефекты кристаллов; элементы-создатели наследственной информации; четырёхэлектронные и полновалентные правила химических элементов и их соединений; физическая наследственность; crystal defects; elements-creators of hereditary information; the four-electron andfull-valence rules of chemical elements and their compounds; physical heredity.

Полный текст статьи

Safarov N.M.
Geographical analysis of the flora of the Central Pamir-Alai
In the article for the first time presented the results of geographical analysis of the Central Pamir-Alai Mountains flora based on materials of long-termfloral and phytocenological research of the author. According to the results of aerographic analysisof 2789 species of higher plants and seed had been set an accessory of the flora of the Central Pamir-Alai to 50 types of ranges. Defined floristic relations between different areas of Pamir-Alai, Tian Shan, Hindu Kush and other areas of the Old Mediterranean region.

Key words: географические связи; ареалы видов: горно-среднеазиатский, Памиро-Алайский, Гималайский; флорогенетика; geographical relations; ranges of species: Mining and Central Asian, Pamir-Alai, Himalayan; floragenetics.

Полный текст статьи

Dodkhoeva M.F., Abdusamatova Z.M., Olimova L.I.
Gestational process and perinatal outcomes in chronic cholecystitis
Pregnant patients with chronic cholecystities were engaged to the research work, where the results showed high rate of pregnancy complicat: ons, such as: prolonged early gestosis,threatened abortion, intrauterine growth retardation, severe pre-eclampsia, low weight birth children, as well morphological and functional immaturity with violation of the CNS.Asa result, cholecyst screening with ongoing further pathologies detection and intime treatment is arequired component of prenatal trainings.

Key words: хронический холецистит; беременность; перинатальные исходы; chronic cholecystitis; pregnancy; perinatal outcomes.

Полный текст статьи

Anvarova Sh.S., Inoyatova N.A.
Clinical and laboratory and instrumental characteristics of subclinical and manifest forms of hypothyroidism in the elderly in terms of iodine deficiency, methods of adequate therapy
In the work the results of the survey 102 patients with primary hypothyroidism in the elderly. Spotted an effacement of clinical manifestations of the disease not only in the sub-clinical forms of the disease, but also in the manifest hypothyroidism, and is associated with signs of aging. Installed the characteristic hormonal and instrumental performance in the syndrome of hypothyroidism in the elderly in terms of iodine deficiency. Proposed a scheme for the treatment of these patients, including the minimal dose of levothyroxine, which is based on years of experience of the authors.

Key words: гипотиреоз; пожилой возраст; йодный дефицит; hypothyroidism; advanced age; iodine deficiency.