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Articles 1 - 30 of 127
Full-Text Articles in Physical Sciences and Mathematics
Analysis Of Design Peculiarities Of Preventive Shoes For Diabetics, A.J Djuraevich, A.A Khaydarov, M.O Muhammedova
Analysis Of Design Peculiarities Of Preventive Shoes For Diabetics, A.J Djuraevich, A.A Khaydarov, M.O Muhammedova
Central Asian Problems of Modern Science and Education
Quality shoes are fundamental to affecting the health of the feet, in particular, when the foot can be subjected to many serious problems, as is the case with diabetes patients. This article identifies, identifies and analyzes the problems of correct design of shoes for people suffering from diabetes, and design features that distinguish orthopedic shoes from other types of shoes.
Determination Of The Influence Of Spin-Off Roundess On The Value Of Spinning Yarn During Spinning, S.X Babadjanov, F.F Isxakova
Determination Of The Influence Of Spin-Off Roundess On The Value Of Spinning Yarn During Spinning, S.X Babadjanov, F.F Isxakova
Central Asian Problems of Modern Science and Education
The article presents the results of studies of the influence of the unevenness of roundness of the spinning rings on the tension of the yarn produced. It is also noted that if the shape of the ring is distorted, then the slider's trajectory is not a circle, but some closed curve that follows the shape of the ring, while, in general, at each subsequent time, the slider moves along a curve with a different curvature radius. The design scheme and the method for calculating the tension of the yarn from the profile of the ring are given.
Investigation Of The Impact Of The Rotation Frequency Of The Discretizing Drum On The Physical And Mechanical Properties Of, Sh.A Korabayev, S.L Matismailov, J.Z Salohiddinov
Investigation Of The Impact Of The Rotation Frequency Of The Discretizing Drum On The Physical And Mechanical Properties Of, Sh.A Korabayev, S.L Matismailov, J.Z Salohiddinov
Central Asian Problems of Modern Science and Education
This article presents the research results of the rotation frequency influence of a pneumatic spinning machine’s drum on the quality indicators of the yarn produced with a linear density of 29 tex. With the rotation frequency increase of the sampling drums, the specific breaking load of the yarn increases to 11.1 cN / tex, elongation to 6.3%, while reducing the coefficient of variation of the breaking load to 9.2%.
Study Of Cotton Drying Device Technologies, R.X Rasulov, D.V Norbayeva
Study Of Cotton Drying Device Technologies, R.X Rasulov, D.V Norbayeva
Central Asian Problems of Modern Science and Education
In cotton ginning cotton processing technologies, the cleaning of raw cotton is a very important process. In the operated purifiers a low purifying effect, in order to increase the cleaning effect, it is required to modernize the working elements of the cleaner. For this, it is necessary to study the process between the serrated drum and the grate. The obtained results can improve the technology of cleaning machines. Studies have determined the change in the purification process
About Wavefunctions In Low-Dimensional Semiconductors, B Akhmedov, J Rozikov, I Muminov, V Ruziboev
About Wavefunctions In Low-Dimensional Semiconductors, B Akhmedov, J Rozikov, I Muminov, V Ruziboev
Central Asian Problems of Modern Science and Education
The impressive progress in the fabrication of low-dimensional semiconductor structures during the past two decades has made it possible to reduce the effective device dimension from three-dimensional bulk materials, to quasi-two dimensional quantum well systems, to quasi-one dimensional quantum wires, and even to quasi-zero dimensional quantum dots. In this article we discussed about wave function in these structures.
Shock-Absorbing Vibrations Of The Elastic Elastomeric End Of The Rotary Inertia, N.J Khujatov, N.I Abdikarimov
Shock-Absorbing Vibrations Of The Elastic Elastomeric End Of The Rotary Inertia, N.J Khujatov, N.I Abdikarimov
Central Asian Problems of Modern Science and Education
The problem of the longitudinal vibrations of the elastic strerin of the longitudinal impact of the second free end of the end of the tape is settled on the basis of the second order (classic) differential equation. Depending on the nature of stroke endings and the nature and conditions of the impact, the initial and boundary conditions of the problem were found. To solve the problem, a structured block scheme was created, using a duplicate scheme. Created a structured block-scheme based on "Pascal" and the results were obtained.
Intercapacitance Between Two Charges Located In The Different Environments, A.E Abdikarimov, A Yusupov, A.E Atamuratov
Intercapacitance Between Two Charges Located In The Different Environments, A.E Abdikarimov, A Yusupov, A.E Atamuratov
Central Asian Problems of Modern Science and Education
It is investigated the dependence of intercapacitance between two point charges located in different environments on the relative position of border. The image method is used. It is considered two cases: the charges is located at line which is perpendicular to the border and the charges is located at line which is not perpendicular to the border. The result show that in both cases the capacitance is increased with displacement the border.
Investigation Of The Pressed Grunt Cement Blocks, A,A Tulaganov, I.M Hadjiev, E.D Ismailov
Investigation Of The Pressed Grunt Cement Blocks, A,A Tulaganov, I.M Hadjiev, E.D Ismailov
Central Asian Problems of Modern Science and Education
In order to increase the strength and seismicity of the traditional grunt cement blocks, the grunt cement block is proposed to be pressed together with fiber waste and data on the study of grunt cement blocks made from local raw materials are provided.
Cyclic Surfaces In The Pseudoevklit Region, B.M Sultanov, Sh,Sh Ismailov
Cyclic Surfaces In The Pseudoevklit Region, B.M Sultanov, Sh,Sh Ismailov
Central Asian Problems of Modern Science and Education
The article describes the hypothesis of the cyclic surface determined in the Galileo domain, the smallest dimensional pseudo-squid space, which is summarized in the five-dimensional two-indexed pseudo-squidoid space and then on the full cyclic surface. Full-scale surfaces have been proven to be in the four-dimensional pseudo-squidoid phase.
Soliton Mechanism Of Charge Transport In Branched Conducting Polymers And Verification Of Conservation Laws, H. Sh. Matyokubov, D. B. Babajanov
Soliton Mechanism Of Charge Transport In Branched Conducting Polymers And Verification Of Conservation Laws, H. Sh. Matyokubov, D. B. Babajanov
Central Asian Problems of Modern Science and Education
In this work we consider the modeling of charge transport processes in branched conducting polymers and verification of conservation laws, such as energy and charge conservation.
Limit Properties Of Order Statistics, А. Madraximov, S. Kukieva
Limit Properties Of Order Statistics, А. Madraximov, S. Kukieva
Scientific journal of the Fergana State University
The paper studies the question of estimating the concentration function for the sums of minima of positive random variables.
Substantiation The Parameters Of The Cotton Cleaners’ Polyhedral Vibrating Fire-Bars, A. Djuraev, R.Kh. Maksudov, Sh. Shukhratov
Substantiation The Parameters Of The Cotton Cleaners’ Polyhedral Vibrating Fire-Bars, A. Djuraev, R.Kh. Maksudov, Sh. Shukhratov
Scientific journal of the Fergana State University
The article describes the principle of operation of the recommended multifaceted grate on elastic supports, as well as the results of the analysis of the grate oscillations, and the parameters are justified. The results of comparative production tests.
Mathematical Models For The Numerical Solution Of Boundary Value Problems Nonstationary Three-Phase Filtering, А. Abdukodirov, G. Аkramova
Mathematical Models For The Numerical Solution Of Boundary Value Problems Nonstationary Three-Phase Filtering, А. Abdukodirov, G. Аkramova
Scientific journal of the Fergana State University
The construction of an explicit / implicit scheme for the numerical solution of regional problems of non-stationary three-phase filtration is considered in the article.
Recommendations For Developing Modern Electronic Educational Resources, S. Abdurakhmonov, I. Bilolov
Recommendations For Developing Modern Electronic Educational Resources, S. Abdurakhmonov, I. Bilolov
Scientific journal of the Fergana State University
The article discusses the use of AutoPlay Media Studio in creating e-learning resources, and also studies the technology of creating electronic resources. Based on the examples, recommendations for use in the education system are developed and provided,
The Value Of Commodity Products Based On Furfural In The National Economy (Review), M. Аkhмаdaliev, I. Аskarov
The Value Of Commodity Products Based On Furfural In The National Economy (Review), M. Аkhмаdaliev, I. Аskarov
Scientific journal of the Fergana State University
The article describes the methods of obtaining furfuralis by recycling of vaste and importance of goods production’s on the base of furfuralis for economy
The Value Of Checking An Infrared Spectrophotometer According To The Program Of Metrological Certification For The Correct Classification Of Motor Oils By Their Chemical Composition, М. Imomova, B. Аbduganiev
The Value Of Checking An Infrared Spectrophotometer According To The Program Of Metrological Certification For The Correct Classification Of Motor Oils By Their Chemical Composition, М. Imomova, B. Аbduganiev
Scientific journal of the Fergana State University
In this article the questions of determining the chemical composition of the motor oils after the metrological certification of infrared spectrophotometer are elucidated
Water Soluble Polysaccharides Of The Plant Aconitum Leucostomum, Sh. Turgunboev, R. Rakhmonberdieva
Water Soluble Polysaccharides Of The Plant Aconitum Leucostomum, Sh. Turgunboev, R. Rakhmonberdieva
Scientific journal of the Fergana State University
Polysaccharides are polymers with a wide spectrum of biological activity. They contribute to detoxification of the body, remove toxic substances, cholesterol, heavy metals, radionuclide from the body, and also repair damaged cells, do not allow the formation of free radicals, restores the immune system. In medicine, based on polysaccharides, biological active additives such as rheopolyglucin, polyglucin, heparin, mucaltin and others have been created.
The Evolution Of Irrigated Arzyk-Shokh Soils Under Anthropogenic Factor, G. Yuldashev, U. Mirzaev
The Evolution Of Irrigated Arzyk-Shokh Soils Under Anthropogenic Factor, G. Yuldashev, U. Mirzaev
Scientific journal of the Fergana State University
This article deals with role of the anthropogenic factor in the process of modern evolutionary development of irrigated meadow saz soils in Central Fergana.
The Way Of Obtaining Of Polyfunctional Haemosorbent, Х. Eshjanov, А. Sarimsakov, М., Baltayeva, М. Nurmatova
The Way Of Obtaining Of Polyfunctional Haemosorbent, Х. Eshjanov, А. Sarimsakov, М., Baltayeva, М. Nurmatova
Scientific journal of the Fergana State University
In the article the facts about separation fibroin fibers from waste matter of silk fibers and the properties of haemosorbent vitamin-B12 sorbtion are given.
Synthesis Of Some Fossils Of Ferrocene Carboxylic Acid And Their Classification Based On Tif Tn, Н Tulakov,, I. Askarov,, Yu. Isaeva,, K. Otaxonov
Synthesis Of Some Fossils Of Ferrocene Carboxylic Acid And Their Classification Based On Tif Tn, Н Tulakov,, I. Askarov,, Yu. Isaeva,, K. Otaxonov
Scientific journal of the Fergana State University
The synthesis of some ferrocenecarboxylic acid derivatives and assignment of code numbers for them according to the commodity nomenclature of foreign economic activity (CN FEA) is described in the article.
Study Of Speech Familiar Topics Using Artificial Neural Networks, А. Abdukadirov,, D Umurzakov
Study Of Speech Familiar Topics Using Artificial Neural Networks, А. Abdukadirov,, D Umurzakov
Scientific journal of the Fergana State University
Create a neural network mode for recognition of separate words solution, analyze training characteristics and behavior of constructed neural network. Target network had to be portable to DSP platforms that define a format of input data.
Comparison Of Theoretical And Experimental Geometric Characteristics Of Betulin, A. Eshimbetov,, Sh Kurbanbaeva,, Sh. Turgunbaev,, A. Xaitbaev
Comparison Of Theoretical And Experimental Geometric Characteristics Of Betulin, A. Eshimbetov,, Sh Kurbanbaeva,, Sh. Turgunbaev,, A. Xaitbaev
Scientific journal of the Fergana State University
The study of betulin and its derivatives is of great importance, since the programs of mathematical modeling enable a qualitative study of the relationship between structure-spectrum-properties. As a result of the theoretical search, it is possible to determine still non-synthesized highly-biologically active derivatives of betulin
About The Estimate Of The Sum Of The Random Number Of Random Numbers, I. Nematov, S. Kukieva
About The Estimate Of The Sum Of The Random Number Of Random Numbers, I. Nematov, S. Kukieva
Scientific journal of the Fergana State University
In this paper we consider the estimate of the maximum of the sums of a random number of independent random variables
One Way To Increase Natural Numbers, A. Yusupova,, S. Uktamova
One Way To Increase Natural Numbers, A. Yusupova,, S. Uktamova
Scientific journal of the Fergana State University
In this paper we consider one of the convenient methods for computing the multiplication of natural numbers.
Spectra Of One – And Two Photon Excited Luminescence Of Medical Drugsin Photon Traps, A.K. Kubanov, D.I. Semenov
Spectra Of One – And Two Photon Excited Luminescence Of Medical Drugsin Photon Traps, A.K. Kubanov, D.I. Semenov
Scientific Journal of Samarkand University
A technique for studying the photoluminescence spectra of pharmaceuticals (analgin, paracetamol) was developed for single- and two-photon excitation by a pulse-periodic laser. The technique is based on the fiber-optic recording of photoluminescence spectra using a small-size spectrometer, quartz light guides, and mini cavity cuvettes, which makes it possible to compare the analyzed spectrum with the spectrum of the reference substance.
On Negative Eigenvalues Of The Discrete Schrödinger Operator With Non-Local Potential, Sh.S. Lakaev, Z.E. Muminov
On Negative Eigenvalues Of The Discrete Schrödinger Operator With Non-Local Potential, Sh.S. Lakaev, Z.E. Muminov
Scientific Journal of Samarkand University
On the d- dimensional lattice 2 , 1 , d d Z the discrete Schrödinger operator H with non- local potential constructed via the Dirac delta function and shift operator is considered. The existence of negative eigenvalues on the parameters of the operator is explicity derived.
The Problem Of Restoring A Function In A Strip Along Curves With Singularities, А.Kh. Begmatov, A.S. Ismoilov
The Problem Of Restoring A Function In A Strip Along Curves With Singularities, А.Kh. Begmatov, A.S. Ismoilov
Scientific Journal of Samarkand University
In this work we consider the problem of re constructing a function from a family of parabolas in the upper half-plane with a weight function having a singularity. The uniqueness of theorem for the solution of equation is proved and the inversion formula is derived. It is shown that the solution of the problem posed is weakly ill -posed, that is, stability estimates are obtained in spaces of finite smoothness.
The Cauchy Problem For The System Of The Moment Elasticity, I.E. Niyozov, Т. Begmatov
The Cauchy Problem For The System Of The Moment Elasticity, I.E. Niyozov, Т. Begmatov
Scientific Journal of Samarkand University
In this paper we consider the problem of analytical continuation of solutions to the system of the moment elasticity in a bounded domain from their values and values of their strains on a part of the boundary of this domain, i.e., we study the Cauchy proble m.
Laser Spectroscopy Of Ultra-Small Concentration Of Atoms And Aerosols In Various Phase States Of Substance, А.Т. Xalmanov
Laser Spectroscopy Of Ultra-Small Concentration Of Atoms And Aerosols In Various Phase States Of Substance, А.Т. Xalmanov
Scientific Journal of Samarkand University
In this work it is given studying of dynamics and types of physical processes with excited atoms and molecules in atomizer of "graphite furnace". Physical mechanism of increasing atomic-ionization signal for two stepwise excitation schemes was shown. It is shown that the maximum signal is observed for In atoms at the transition 5p 2 Р3/2→6s 2 S3/2→8p 2 P1/2 and for Li, Na, Ag, Au, Pt atoms at the transition (n)s→(m)p→(k)d respectively (where n, k, m and f principal quantum numbers of states). In the result in the experiment photoionization collisional ionization and mechanisms were developed. The results are show …
About Antioxidant Activity Of Some Representatives Of Flora Of The Fergana Valley, К.А. Zahidov, S.D. Aronbaev, G.M. Abilkasimova
About Antioxidant Activity Of Some Representatives Of Flora Of The Fergana Valley, К.А. Zahidov, S.D. Aronbaev, G.M. Abilkasimova
Scientific Journal of Samarkand University
The article presents the results of the determination of the antioxidant activity of aqueous and alcoholic extracts of 18 medicinal plants growing in the Fergana Valley using an electrochemical analyzer Σ - AOA. A solution containing 0.005 M K3 [Fe (CN) 6] and 0.001M K4 [Fe (CN) 6] in 0.05 M phosphate buffer with a pH of 6.86 was used as an electrochemically reversible mediator system. The standard of antioxidant activity was an aqueous and alcoholic solut ion of ascorbic acid with a known concentration. It was shown that all of the studied plants possess antioxidant activity to some extent. …