DEVELOPMENT OF THE THICKENER COMPOSITIONWITH LOCAL RAW-MATERIALS FOR PRINTING BLENDED FABRICS COTTON-SILK
Author: Qurbonova Feruza Nurullayevna, Gulnora Akmalovna Ixtiyarova, Hulkar Haydarova, Savriyeva Nigina
Abstract:
In the following article the developed new thickener are studied based on hydrolyzed acrylic emulsion (HAE), uzchitan and carbaxymethyl starch for printing mixed fabrics cotton-silk. Investigated coloristic prop-erty printed fabrics.
STRUCTURAL FEATURES OF SOLID SOLUTIONS (InSb)1-x(Sn2)x FILMS GROWN FROM A LIQUID PHASE ON GaAs SUBSTRATES AND SOME PHOTOELECTRIC PROPERTIES OF HETEROSTRUCTURES ON THEIR BASIS
Author: Saidov Amin Safarbayevich, Usmonov Shukrullo Negmatovich, Asatova Umida Palvanovna, Tolmas Ishniyazov
Abstract:
Layers of solid solutions (InSb)1-x(Sn2)x on (100) GaAs and (100) GaP substrates were grown by liquid phase epitaxy from an indium melt
solution. The solid solution (InSb)1-x(Sn2)x (0 ≤х≤ 0.05) had a mono-crystal structure with the orientation (100), constant of the lattice as.s. = 6.486 Å and the hole conductivity type. The spectral dependence of the absorption coefficient was used to estimate the band gap of the epitaxial layer of the solid solution, which was 0.11 eV. The spectral photosensitivity of n-GaAs–p-(InSb)1-x(Sn2)x and n-GaP–p-(InSb)1-x(Sn2)x heterostructures covers the wavelength range from 1.0 to 5.3 μm.
METHOD FOR DETERMINING HYDRAULIC RESISTANCE DURING FLUID FLOW IN PIPES
Author: Navruzov Kuralbay, Shukurov Zoxid Kuchkarovich, Begjanov Amirbek Shixnazarovich
Abstract:
In the article, pulsating fluid flows in tubes with changing walls, which are of great importance in biological mechanics, in particular, in the flow of blood in the arterial vessel, are investigated. The solution of the problem obtained formulas for the distribution of pressure gradient, velocity and flow rate. Impedance method analyzed the increase in hydraulic resistance depending on the frequency of oscillation. It was found that with large values α 2 of hydraulic resistance grow with growth α 2. For crowding out the same flow rates, for small and with large values of the vibrational number or frequency, the energy input is different. Since for small values of the oscillatory number, fluctuations in the flow rate of the fluid fluctuate in the same phase with the oscillation of the pressure gradient, and for large values of this number, the oscillation of the phase of the fluid flow is shifted by 90 0 degrees than fluctuations in the pressure gradient. In addition, for large values of the vibrational number, a tenfold size increases the maximum amplitude of the pressure gradient, relatively, than at low frequencies. This feature leads to an increase in the energy cost of pumping fluid due to wall oscillation.
THEORETICAL AND SCIENTIFIC CONCEPTS REGARDING GEOECOLOGY
Author: Matsaidova Sayyora Khudayberganova, Aminov Bexzod Baxrom Ugli
Abstract:
This article discusses the importance of geoecology today, the methodological foundations of this subject, and the emphasis on science in our country. It also covers the purpose and subject of geoecology, as well as the developing styles of this subject in world practice.
MATHEMATICAL MODELLING OF BLOOD FLOW
Author: Joao Oliveria Venture, Khujatov Nurbek Jumaboevich
Abstract:
The paper presents the two-phase model to describe blood flow in large and in small blood vessels. Based on this model the study gives an explanation for long known features (effects) of blood flow in the vessels: dependence of the hematocrit (packed cell volume) on the diameter of the vessel, existence of cell-free plasma layer near the vessel wall, obtuse (as compared with the profile of Poiseuille flow) velocity profile of a blood; dependence of the blood viscosity on the diameter of the vessel. The researcher determines dependences of the blood rate and viscosity on the diameter of a blood vessel.
With the flow of blood in small vessels (less than 200 μm), the rheological properties of the blood depend on the size of the vessel - the apparent viscosity of the blood drops with a decrease in the diameter of the blood vessel. To describe the flow of blood in small vessels, it is necessary to create an equation of state that depends (apart from other parameters) on the diameter of the vessel.
TO THE ISSUE OF YOUTH PARTICIPATION IN THE DEVELOPMENT OF THE NATIONAL INNOVATION SYSTEM OF UZBEKISTAN
Author: Rakhimova Mumina Zakirjonovna
Abstract:
This article analyzes the development of scientific and technical potential, the expansion of the integration of science and production, comprehensive support for innovation. Opinions are expressed on the participation of young people in the development of the system of national innovation, on strengthening cooperation between science and production, on strengthening and expanding scientific and technical research in the country.
PEDAGOGIC SIDES OF FORMULATING SPACE-RELATED IMAGINATION IN STUDENTS’ MIND
Author: Tag’anov Ravshanbek Otaboyevich
Abstract:
This course focuses on the development of graphic assignments, graphic design, and active use of space imagery in the development of geometry and drawing geometry.
TEACHING ENGLISH FOR SPECIFIC PURPOSES AT URGENCH STATE UNIVERSITY (URSU);EXPERIENCE AND CHALLENGES
Author: Abdullaev Davron
Abstract:
This article deals with the pedagogical challenges of teaching English for specific purposes at Urgench state university.
THE INTREPRETATION OF A WORD OR POETRY IN MATNAZAR ABDULHAKIM’S JOURNALISM
Author: Hulkar Gaipova.
Abstract:
In this article are highlighted journalistic views about literary words and poetry in the literary thoughts janre of well-known poet M. Abdulhakim.
APPLYING COMMUNICATIVE LANGUAGE TEACHING (CLT) TO DEVELOP SPEAKING SKILL IN EFL CLASSROOMS.
Author: Pulatova Zamira Abdullaevna
Abstract:
There are different approaches to improve students’ speaking skill. One of the approaches is through communicative language teaching (CLT) approach. CLT is the approach in which the students are asked to use the language for communication in real situation. CLT will allow students the opportunity to use the target language in an authentic way.The article deals with the issue of working out useful and effective ways and some methods of teaching and developing students’ speaking skills in English foreign language classes.