POLYPHINYLCHLORIDE WAS MODIFIED BY POLYETHYLENE POLYAMINE, AND THE IONITIS IN STATIC CONDITIONS OF COPPER (II), NICKEL (II) AND COBALT (II) IONS THEIR SORPTION FEATURES
Author: Ismoilova Khimoyat Matnazarovna, Bekchanov Davronbek Jumanazarovich, Rajabov Elyor Bakhtiyorovich
Abstract:
Polyphinylchloride was modified by polyethylene polyamine, and the ionitis was studied in static conditions by the artificial solution of copper (II), nickel (II) and cobalt (II) ions. In static conditions, factors affecting the sorption process, such as time dependence, temperature and concentration dependence, were investigated. The IQ spectroscopic, elemental analysis, thermal analysis and analytical methods have proven the chemical structure of anionite and
polycomplexone based on plivinyl chloride, which have been shown to be thermally and chemically stable.
ANALYSIS OF DESIGN PECULIARITIES OF PREVENTIVE SHOES FOR DIABETICS
Author: A.J. Djuraevich, A.A. Khaydarov, M.O.Muhammedova
Abstract:
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
Author: Babadjanov Sobit Xusanovich, Isxakova Fazilat Farrux qizi
Abstract:
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.
DEVELOPING A NEW CONSTRUCTION MECHANISM OF MATERIAL MOVEMENT IN A SEWING MACHINE
Author: Djurayev Anvar Djurayevich, Tuguzbaeva Robiya Berdimuratovna
Abstract:
The proposed mechanism allows to increase the reliability of sewing machines by reducing the loads in the kinematic pairs and simplifying the design, which leads to an increase in the speeds of movement of the material, thereby increasing the productivity of sewing machines.
INVESTIGATION OF THE IMPACT OF THE ROTATION FREQUENCY OF THE DISCRETIZING DRUM ON THE PHYSICAL AND MECHANICAL PROPERTIES OF
Author: Korabayev Sherzod Ahmadjonovich, Matismailov Saypila Lolashbayevich, Salohiddinov Jahongir Ziyoviddinovich
Abstract:
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
Author: Rasulov Ruzimurod Xasanovich, Norbayeva Dilfuza Voxidovna
Abstract:
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
Author: Akhmedov Bakhodir, Rozikov Jurabek, Muminov Islomjon, Ruziboev Valijon, Zokirov Adham
Abstract:
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.
STABILITY OF FINITE DIFFERENCE SCHEMES FOR SIMMETRIC HYPERBOLIC SYSTEMS
Author: Sardor Usmanovich Dadabayev, Raxmonov Omadjon Mamasidiq ugli
Abstract:
In this article we investigate the stability of the finite difference schemes using the Neumann method for symmetric hyperbolic systems. For the two-dimensional symmetric hyperbolic system, the condition of the Lax-Wendroff scheme stagnation has been studied. To check for resilience using MathCad software it has been done some calculations.
SHOCK-ABSORBING VIBRATIONS OF THE ELASTIC ELASTOMERIC END OF THE ROTARY INERTIA
Author: Khujatov Nurbek Jumaboyevich, Abdikarimov Nabijon Ibadullayevich
Abstract:
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 blockscheme based on "Pascal" and the results were obtained.
INTERCAPACITANCE BETWEEN TWO CHARGES LOCATED IN THE DIFFERENT ENVIRONMENTS
Author: Abdikarimov Azamat Egamberganovich, Yusupov Ahmad, Atamuratov Atabek Egamberdiyevich
Abstract:
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.
