Vol. 3 No. 06 (2021)

This article describes the technology for restoring worn working surfaces of a grate of a saw gin by surfacing them. Inlet wear of the working surfaces of the grate of the gin causes poor fiber quality. Worn parts lead machines to work with a deviation from the set parameters, reduces the efficiency of machines, leads to the emergence of additional load-bearing machines, which leads to a deterioration in the operating condition and the weakening of machinery mechanisms. To prevent these drawbacks of worn parts instead of replacement with new ones, surfacing under the flux is used, which is economically profitable. Studies were conducted to study the macro- and microstructure and heat treatment of the deposited working bodies using a metallographic microscope, determine the composition based on spectral analysis, determine the hardness using the Brinell and Rockwell methods, determine the sample wear rate in an abrasive medium developed on a special machine. On the basis of the executed researches recommendations about introduction of alloying elements in building-up welding metal are given.

The article presents the results of studies carried out to determine the capillary absorption (Wvs) of a saline solution during evaporation and to establish a cyclic temperature regime. It has been established that for a reliable assessment of the capillary permeability of concrete in a dry hot climate, it is sufficient to subject the samples to 60 cycles of preliminary alternating heating and cooling, followed by testing in a climatic chamber for capillary absorption of a salt solution at a temperature of 40 ° C and a relative humidity of 30%.

The article examines a practical and theoretical study of the process of separating seeds from saw gin with installed grates with a concave profile proposed by us, in contrast to the existing grates.

Improving the efficiency of the process of separating the fibre from cotton seeds by improving the working chamber of the gin is one of the important issues. The main way to increase the efficiency of sawn gin is to increase the fibre content in the mass of seeds in the working chamber with a uniform decrease in its density. This can be achieved by using grates with a concave working surface, which serves to move the seeds away from the rotating saws and accelerate the release of bare seeds from the working chamber. The article discusses the movement of seeds on the concave surface of the grate and determines the rational parameters of their working part.

In the article the methods of evaluation based on fuzzy logic and network modelling based on the theory of fuzzy sets to the challenges of sustainable operation of telecommunications systems. The factors affecting the sustainable operation of telecommunication systems using fuzzy sets.

This study adds to the writing on ladies in science, innovation, engineering ,and math SIEM by inspecting the outlining of designing on school sites, a major recruitment apparatus. We take sites to be key wellsprings of printed information that can give bits of knowledge into the discourses encompassing the field of designing.

As part of the study of the Bukhara-Khiva oil and gas region, a geologist performed a comprehensive analysis of geophysical information on wells - lithological description of the core, laboratory determinations of reservoir properties, log curves, test results. The article is presented. The most complete information on the structure of the surfaces of the suprasalt complexes was obtained from the top of the Bukhara layers of the Paleogene. The obtained data were incorporated into the logging interpretation algorithms, which made it possible to give a litho-petrophysical characteristic of each of the formations of the Jurassic Cretaceous oil and gas complexes within the Chardjoy stage of structural-facies zones.

This article presents the results of laboratory studies to study the decomposition constant of Kyzylkum phosphorite flour with evaporated extraction phosphoric acid of various concentrations (35,69; 41,20; 44,98% Р₂О₅) at high norm and temperature 70-100 °C during 5-120 minutes. It was shown that the maximum value of the decomposition coefficient of phosphorite flour (K_decom. 99.95%) is achieved using phosphoric acid with a content of 35, 69% Р₂О₅.

The article discusses the high level of development of industry and architecture in prehistoric Greek architecture.

The article deals with the issues of the influence of climate on buildings and the improvement of the microclimate in flight conditions.

The article provides information on the correct and reasonable design and construction of reinforced concrete beams, girders and stairs of important load-bearing elements of buildings to ensure the strength, durability and operational reliability of the building and its cost-effectiveness.

This article reveals the integration of students' knowledge control with the help of interdisciplinary connections in the study of general professional disciplines. Methods and methods of control of students' knowledge with the help of integrative tests in the study of general professional disciplines are proposed on the example of the course of metrology, standardization and interchangeability.

After the independence of our country, we can see a significant increase in construction and beautification works in our country. In Uzbekistan, a lot of attention is paid to urban planning, including the construction of buildings and structures. Our cities are becoming more beautiful day by day, and the focus on the construction of new buildings, schools, colleges, commercial establishments, and many industrial and public buildings, as well as public catering establishments, has changed significantly. This article discusses the historical form, decoration, architectural solutions and current state of public catering establishments in the Fergana Valley.

This article presents the theoretical and methodological prerequisites for the formation and development of fractal pedagogy. In addition, the scientific justification of the principles of fractal pedagogy, its features and principles are considered and given. The result of the research is to determine the structure of personal and professional self-development of the teacher (motivational, design, activity-practical, reflexive, emotional volitional components).

The presented research is considered as a variant of understanding the problem of personal and professional self-development of a teacher from a new perspective. Fractal methodology applicable to the problem of self-development of the teacher can be the Foundation for various psychological and pedagogical research in their perspective.

A control model and elements of the control system of an internal combustion engine are considered, which make it possible to adjust the fuel - air mixture in the intake depending on the operating mode of the internal combustion engine. The aim of the study is to evaluate theoretical ways to improve the performance of the control system for an internal combustion engine, allowing to improve the adjustment of the fuel-air mixture at the engine intake, depending on the mechatronic adapter of the oxygen sensor. Dosing of the amount of fuel depends on the duration and correctness of the signals supplied from the sensors of the mechatronic control system, and affects the ecology of the environment. The duration of the electric pulse of the injector control and the ignition moment are calculated by the microcontroller of the mechatronic engine control system (MSUD) depending on the sensor signals: the composition of the exhaust gases, the opening of the throttle valve, air temperature, engine temperature, engine speed, load and other sensors. The stability of the engine performance is largely determined by the speed of the mechatronic system.

In this article the issue of creating software for digitization of medical services to the , population in the Republic of Karakalpakstan is considered. As such software, a mobile application for smartphones, which is now widely used by our people, is offered. The software developed by authors has a database of polyclinics located in Nukus and makes an electronic queue/appointment for the reception of the patients by the chosen doctor. The program has shown good results when tested by users.

The article considers and solves the problem of determining the average operation period of belt conveyor rollers used for transporting overburdened rocks in the conditions of the Angren open pit. The main objective of the study is to determine the operation period of the conveyor belt rollers by considering statistical and dynamic loads on individual pieces of rock. A graph of the dependence of the service life of the belt conveyor rollers on the belt speed was obtained. Recommendations for increasing the service life of belt conveyor rollers are presented.

An important issue is the construction of low-pressure hydrotechnical constructions in areas with difficult engineering and geological conditions, ensuring their strength and stability during operation, increasing base stability.  This paper presents the option of applying effective technology in the design and construction of the ground of low-pressure hydrotechnical constructions in such areas without compromising the properties of the soil.

The article presents data from studies of porous claydite concrete with TPP ash and polymeric polyfunctional additive K-9. The concrete is intended for the production of building envelopes. An increase of 12% in the initial modulus of elasticity, an increase in physical and mechanical properties, a decrease in the coefficient of thermal conductivity of porous claydite-ash concrete by 8.1% are shown, which indicates an increase in the heat-shielding properties of enclosing structures, an increase in their energy efficiency.

The article presents the results of a study of the effect of polystyrene concrete on the physical-mechanical, chemical and operational properties of a complex chemical additive based on local raw materials with an additive KDj-3.

The article under discussion depicts a study on the effective cleaner of raw cotton from fine trash particles. The purpose of the study is not only to obtain specific information about the raw cotton cleaning process for the selected processing combination but also to obtain some generalization about the desiccation circuit. The authors of the article consider that proposed in the research CCD-10M cleaner allows to achieve high cleaning effect with little damage to the seeds.

The article presents the results of experimental studies on the calculation of the fracture toughness of compressed reinforced concrete elements made of aggloporite, operated in a dry hot climate. Calculation formulas are indicated for determining the crack resistance of compressed reinforced concrete elements operated in areas with a dry hot climate.

It is known from the statistics of world fires that the number of fires occurring in the world every year reaches millions. People die in fires and more people get various injuries. In addition, fires cause significant damage to the economies and ecology of states. Despite research on scientific and technical solutions to problems in the field of fire safety, the number of major fires in the world in the XXI century is still growing. For example, fires have caused the collapse of buildings and industrial facilities, resulting in many deaths. Therefore, in the construction of modern buildings and industrial facilities, great attention is paid to their effective fire safety.

The corrosion condition of reinforced concrete structures is assessed by: field surveys; laboratory studies of selected samples of materials; probabilistic and statistical analysis of the results of field examination and laboratory research.

The article discusses the prospects for the use of polymer composite fittings in building structures and the use of alternative materials to replace steel in the construction industry.

Currently, the importance is attached to small businesses and private entrepreneurship. Therefore, the purpose of my project work is to design on the basis of modern models of boots for boys without a floor with a cast sole, to develop technological processes that support modern devices that process the details of the upper and sole at different stages, based on the requirements for shoes.

Studies have been conducted to study the dyeing processes with different ratios of cotton, bamboo, polyester (PE) and polyacrylonityryl (PAN) fibers with active dyes. The coefficient of light reflection, wavelength, and color intensity of colored fabrics made of natural and chemical fibers are determined.

Levenshtein Distance is a way to ascribe a numeric distance between two sequences (often characters in a string or word) by counting the minimum number of insertion, deletion and substitution operations required to transform one sequence to the other. The following article looks into the general definition, explanation and application of the theory.