Доклады Академии наук Республики Таджикистан, том 57, №6, 2014 г.
|Article title and abstract||Pages|
Abstract differential equations with impulse effect
Found that using nonlinear semigroups abstract differential equations with impulse effect can be redused to discontinuous dynamical systems. Examples of discontinuous dynamical systems are open finite-dimensional systems with impulse effect, hybrid dynamical systems Petrenets, ets.
Key words: разрывные динамические системы; нелинейные полугруппы; система с импульсным воздействием; discontinuous dynamical systems; nonlinear semigroups; system with impulse action.
|Rajabova L., Rajabov N.|
To theory one class of two-dimensional Volterra type Integral Equation with weakly singularity in first quadrant
In this work we found the solution of two-dimensional integral equation of Volterra type with boundary weakly singularity boundary. In the case, when the functions that are present in the kernel, connected between himself certain form, we obtained explicitly solution the integral equation , when the functions present in the kernel are not connected between, we obtained the solution by resolvent integral equation with a weak singularity, in the first quadrant.
Key words: двумерные интегральные уравнения типа Вольтерра; слабая сингулярность; собственные значения; собственные функции; two-dimensional integral equation of Volterra type; weakly singularity; own signs; own functions.
Approximation of functions in
[0,2π] and the values of widths for some classes functions
The exact values of diverse -widths of periodical functions belong space and satisfying the condition of where is the module of continuity of -order derivative is an arbitrary increasing function and were found in the article.
Key words: наилучшие приближения; модуль непрерывности; точная константа; экстремальная характеристика; весовая функция; n-поперечники; the best approximation; modulus of continuity; exact constant; extreme characteristic; weight function; n-widths.
|Safarov D.S., Gaurov A.T.|
Quasi-periodic solutions of the second kind of Cauchy-Riemann in homogeneous system
In the paper a method of finding the quasi-periodic solutions with constants coeffiсients of the in homogeneous Cauchy-Riemann equations is proposed, with help a elliptic functions.
Key words: уравнение; решение; эллиптическая функция; период; задача; solution; equation; elliptic function; period; problem.
Resonant properties of energy in whole space
The behavior of energy integral for wave equation has been investigated when at exterior “trap”-area.
Key words: резонансные свойства; энергия; resonant properties; energy.
|Usmanov Z.D., Kosimov A.A.|
A digital image of the Shehnomeh by A.Firdousi
It is stated that 11 poems of the Shehnomeh of Firdousi as well as their translation on Russian, coded by 5 natural units of a text measurement, become statistically indistinguishable.
Key words: Фирдоуси; «Шахнаме»; единицы измерения; кодирование; Firdousi; Shehnomeh; units of a text measurement; coding.
|Shoyoqubov Sh.Sh., Shoyoqubov Sh., Ibrohimov A.A.|
Dynamics and speed of complex ions formation in comets
The purpose of this research is to create a laboratory model of comet phenomenon and perform mass spectral analysis of the dynamics and speed of formation of complex ions by bombarding the solid mixture of H
O and CO
with positive Cs ions with energy of 1.5KeV. Results of previous mass spectral studies of laboratory modeled comet phenomena and emission coefficient proportionality method were used in calculations.
Key words: сложные ионы; скорость образования; двухзаряженные ионы; положительные ионы; кометный лед; complex ions; speed of formation; twice charged ions; positive ions; cometary ice.
|Odinaev S., Mahmadbegov R.S.|
About communication definition between coefficients of dielectric permeability and dielectric losses of solutions electrolits
On the basis of analytical expression for complex coefficients specific electroconductivity, received the method of the kinetic equations, and its communication with complex coefficient of dielectric permeability find dynamic coefficients of dielectric permeability and dielectric losses of solutions electrolits. The last obviously contain frequencies, temperatures and in subintegral expressions potential energy of interpartial interaction, and also of radial distribution function. Are defined acimptoticaly behaviour, at low and high frequencies, and also their communication.
Key words: коэффициент удельной электропроводности; диэлектрическая проницаемость; диэлектрические потери; потенциальная энергия взаимодействия; радиальная функция распределения; coefficient specific electroconductivity; dielectric permeability; dielectric losses; potential energy of interaction; radial distribution function.
|Beknazarova N.S., Shoedarova Z.A., Aminjanov A.A.|
Complexation of iron(II) with 4-methyl-1,2,4-triazoltiolom-5 in the environment 4 mol/l H
at 298 K
By potentiometric titration investigated iron complexation (II) with 4-methyl-1, 2,4 - 5-triazoltiolom medium 4 mol / l H
at 298 K. Complexation of iron (II) with 4-methyl-1 ,2,4-triazoltiolom proceeds stepwise with the formation of three complex forms. Calculated stability constants of these complexes.
Key words: железо(II); 4-метил-1,2,4-триазолтиол-5; комплексообразование; константа устойчивости; iron (II); 4-methyl-1,2,4-triazoltiol-5; complexation; stability constant.
|Azizov R.O., Saidov M.H.|
The technological procesess for drawing coverings from polymeric powder materials
In clause the development of technology flame spraying polymeric corrosion-resisting, of coverings is considered.
Key words: защитное покрытие; порошковый полимерный слой; коррозионная стойкость; protective coating; polymeric powder coating; corrosion sustainable.
|Dadoboeva M.L., Giyasidinov B.B., Mirakilov Kh.M., Solieva B.A., Abdullaev Kh.A.|
About of the photosynthetic compensitative capasity of cotton flower bracts
In this article the data about of the photosynthesis of cotton flower bracts are presented. It shown that after full defoliation of cotton plants and when the bolls still without source of assimilate, the intensity of photosynthesis of bract is increased.
Key words: тонковолокнистый хлопчатник Gossypium barbadense L; дефолиация; фотосинтез; longstable cotton Gossypiumbarbadense L; defoliation; photosynthesis.
|Mirojov G.K., Avezov S.A., Azimova S.M., Orifjanova N.M., Odinaev R.I., Hodjamuradov M.N., Tukhtaeva N.S., Ramazanova Z.D.|
Comparative effecacy of lamivudine and entecavir in the treatment of patients with liver cirrhosis of HBV-etiology
In 78 patients with compensated liver cirrhosis due to HBV studied the effectiveness of lamivudine (100 mg daily) and entecavir (0.5 mg per day). Monitoring patients contined up to 42 months. The progression of the cirrhotic process was observed in 48% of patients in the control group, 26% of patients in the group with lamivudine and only in 12% of patients in the group with entecavir. Child-Pugh score during treatment with nucleos(t)ide analogues increased from 29 to 31% vs. 56% of patients in the control group. Complications of liver cirrhosis were also significantly less likely occurred in the groups receiving antiviral therapy. HCC during the 42 months follow-up was developed in 4 (15%) patients of the control group, 2 (6%) patients treated with lamivudine, and no cases in the group treated with entecavir. lamivudine reduced the risk of complications of liver cirrhosis and HCC in a more than 2 times, and entecavir more than 3.5 times.
Key words: цирроз печени; HBV; ламивудин; энтекавир; liver cirrhosis; HBV; lamivudine; entecavir.
Assessment the efficiency of the different methods of the palliative pain therapy in oncostomatology patients with advanced stage of disease
The quality of life (QOL) of 108 patients, with advanced stages of malignant tumors on the maxillofacial area (MTMFA) in the dynamics of palliative pain therapy are studied. Revealed that regardless of the method of treatment, the advanced stage of maxillofacial cancer is accompanied by painful clinical symptoms: impaired functions of chewing, swallowing and speech, disfigurement, resulting in severe social exclusion, and a significant reduction in quality of life (QOL). It was established that on the 10th day of pain therapy overall quality of life (OQOL) in patients who have chronic pain syndrome (CPS) was stopped by prolonged regional blockade (PRB) branches of the trigeminal nerve (the main group) amounted to 91.1±3.1 points (an increase of 15.2±0.7 points) - almost like a healthy person, and in patients who applied for pain narcotic analgesics (control group), on the contrary decreased to 71.8±5.1 points (down by 5.3±0.3 points).
Key words: качество жизни; злокачественные новообразования челюстно-лицевой области; паллиативная противоболевая терапия; quality of life; malignant neoplasms of the maxillofacial region; palliative pain therapy.
|Konunova D.M., Sultanov D.D., Avgonov U.M., Gulmuradov T.G.|
Videothoracoscopic cervico-thoracic sympathectomy in treatment of raynaud's disease
The article analyzes the results of diagnosis and surgical treatment of 21 patients with Raynaud's disease. Identified volume of diagnostic procedures and indications for thoracoscopic selective cervical-thoracic sympathectomy. The results of ultrasonography and rheovasography were compared before and after surgery. At the same time, we detected significant increase in blood flow after surgery. In the long- term, positive results were observed in 90.5 % of patients.
Key words: болезнь Рейно; видеоторакоскопия; шейно-грудная симпатэктомия; Raynaud's disease; videothoracoscopy; cervical-thoracic sympathectomy.