Theoretical & Applied Science

1-10

Authors: Denis Chemezov ; Egor Tuykin ; Andrey Ivanov ; Ivan Proshin ; Aleksandr Odudovskiy ; Oksana Dubova ; Emil Akhmetov ; Aleksey Kuzin

The results of the computer calculation of air flow around the airfoils having the names beginning with the letter K are presented in the article. The contours of pressure distribution on the surfaces of the airfoils at the angles of attack of 0, 15 and -15 degrees in conditions of the subsonic airplane flight speed were obtained.

15-18

Authors: Farhod Khamraevich Allaberdiev ; Maftuna Farhodovna Khamraeva ; Mukhiddin Farhodovich Khamraev

The possibility of combining the processes of reduction of deoxyvazicinone and vasicinone to deoxypeganine and peganine and the isolation of the latter in the form of complex salts from a complex natural sum of alkaloids is shown. The most effective way of obtaining peganine in an individual form is proposed.

24-29

Authors: H.K. Muradov ; S.V. Abdiyeva ; F.H. Ibrahimova ; N.H. Zeynalova ; S.R. Muradova ; Sh.S. Ibrahimova ; E.E. Ibrahimov

In this research are present modern opportunities for diagnosing and predicting peripheral primitive neuroectodermal bone tumors based on the analysis of literature data and results of our observations.

33-35

Authors: Umida Sayotbekovna Kurbonova

The article under discussion depicts the Concept of environmental protection in the Republic of Uzbekistan. The Presidential Decree contains solutions to many acute environmental problems. The Decree approves the Concept itself and a three-year roadmap for its implementation, while for the first time requiring the State Committee for Environmental Protection to develop and submit for approval to the Cabinet of Ministers a draft roadmap for the next period. The author of the article believes that the Concept of Environmental Protection of the Republic of Uzbekistan requires in-depth study by managers and specialists, scientists and practitioners, teachers and students. On its implementation depends on how much progress we will make in improving the environmental situation in the country and reducing a number of diseases among the population.

40-63

Authors: Natalya Sergeevna Rumyanskaya ; Artur Alexandrovich Blagorodov ; Vladimir Timofeevich Prokhorov ; Galina Yurievna Volkova

in the article, the authors, using the developed software, evaluated the possibility of a new term for assessing product quality, namely: “Product Priority”, in order to help the consumer of this same light industry product to have more effective criteria for preference when choosing an assortment for their needs. For the first time, we studied the possibilities of motivating a person to effectively manage the team of a light industry enterprise for the manufacture of demanded and import-substituting products in the demand market, taking into account its priority and guaranteeing the enterprise sustainable TEP from their activities, considering the possibilities of combining culture and participatory management to ensure the production of demanded and competitive products consumers in the regions of the Southern Federal District and the North Caucasus Federal District. In addition, the authors consider that control within the framework of the QMS carries a psychological burden and forms a sense of responsibility in the team for the implementation of the tasks formulated before it. But this is on condition that a competent selection and recruitment of personnel is implemented, which has communication skills, professionalism and stress resistance.

88-92

Authors: Munavvarkhon Khayotovna Mukhitdinova

The article demonstrates the issues of storing a large amount of information, since the problem of digital chording is associated with rapid growth in volumes.In ten years, from 2010 to 2020, there has been a 50-fold increase in stored data, more than 90% of which is corporate data. In 2011, the total volume of digital data in the world reached 1 zettabyte, in 2020 the increase in the volume of information was 50 times, which required an increase in the number of servers necessary for its storage by 10 times. According to some forecasts, the increase in the volume of information in the coming years will be more than 20 exabytes, and the problem of storing large amounts of information without Big Data will be inconceivable.

119-130

Authors: Seno Andri ; Ajeung Shierly liandra

The company always requires employees to improve short- and long-term performance to contribute to achieving company goals. Improving employee performance requires evaluation as a mechanism to provide feedback. Performance evaluation is important because it measures how much an employee can complete his work. Companies must realize that good employee performance is due to some driving factors that companies must boost to motivate their employees.Companies must give serious attention to employees so that employees can maintain their performances. If companies do not pay attention to their employees' basic needs, their performance can certainly decline. Based on the description and explanation of the background, the high level of employee turnover proves that the employee's performance is still low with the formulation of the problem What is the Effect of Giving Compensation to Employee Performance Through Employee Morale at PT Indokomas Buana Perkasa in Maredan Barat.

135-139

Authors: Shuxrat Isroilovich Jo’raev

An elastic problem is considered and its analytical solution is constructed. Was proved the theorem that a linear differential equation with polynomial coefficients corresponds to an equivalent Voltaire type integral equation of the 2nd kind with degenerate kernels containing only power and exponential functions, and the exponents can be specified in advance. As an example, the Bessel equation is given.

145-148

Authors: Zebo Uralovna Berdieva

In the article, the figurative method, which is the most widely used in poetry, is sometimes the main principle of the art of words and one of the types of artistic transfer, the role and manifestations of metaphor in poetry, the artist who has four unique styles of aesthetic functionality: Rauf Parfi, Nadira Afokova, Halima Ahmedova and Askar Mahkam. it is in this way that it is studied in the example of its views and ideas.Imagery is the life and soul of a true work of art. Thanks to the metaphor, the artistic text becomes layered. Everyone opens these floors as much as his mind, thinking, knowledge allows. It is studied on the example of poetry created in the environment.

154-157

Authors: Dilshod Shukurullayevich Kholikov

In this work, on the basis of the equations of torsional vibrations of a circular conical rod derived by the author, taking into account physical nonlinearity, the problem of torsional vibrations of a rod is numerically solved. A comparative analysis of the results obtained for nonlinear and linear cases is carried out. To solve the problem, a numerical finite difference method is applied. The approximation of the oscillation equation and boundary conditions leads to a system of algebraic equations, the solution of which is not mathematically difficult. On the basis of the obtained numerical data of the problem, graphs of the dependences of the torsional displacement and stresses on time were constructed. The main conclusions made on the basis of the constructed graphs of displacement and stresses are presented.

161-165

Authors: Irada B. Hajiyeva

N-methylolchloroacetamide, N,N'-oxymethylenebischloroacetamide and N,N'-methylene bischloroacetamide were synthesized, which has got different reactive capability and were reacted with alkaline salts of alkyl xanthogenic acids. Optimal conditions for the synthesis of N, N'-oxydimethylene- and N, N'-methylenebisalkylxanthogenatoacetamides, whose structure has been studied by IR and NMR spectroscopy methods and are uniquely consistent with the formulas attributed to them. The structure of all synthesized compounds was proved by studying their physicochemical properties, including the determination of refractive indices (n20D), specific gravity (d 204) and the calculation on their basis of molecular refraction. With their subsequent comparison, elemental composition and IR spectroscopy. The IR-spectrums of absorption were taken with the SPECORD-75IR IR spectrophotometer, made by Karl-Zeis (GDR) firm, using prisms KBr in the 4000-400 cm-1 region. Absorption bands (most characteristic): stretching vibrations of the C-H bond 2928-2856 cm-1, stretching vibrations of the N-H 3384-3192 cm1 bond, stretching vibrations of the C = O 1648 cm-1 carbonyl group, and an intense absorption band of 768 and 556 cm-1 C-Cl bonds correspond to functional bonds and groups of synthesized compounds, which confirms their structure. The structure of the compounds was also confirmed by 1H NMR and 13C NMR spectra, taken in a solution of dimethyl sulfoxide (DMSO d6). NMR spectra were recorded on “Bruker AC300” spectrometer with operating frequency of 300.13 MHz and 75.47 MHz.

177-181

Authors: Farhod Abdiraimovich Usmanov

In the modern world community, homelessness of children poses a serious threat to humanity. In order for every nation to be able to build a great future, it must first of all be able to give a worthy education and upbringing to the young people who are its future masters. A state capable of providing young people with a decent lifestyle and education will lay the foundation for their great future.

188-192

Authors: Murodjon Abdusalimzoda Samadiy ; Jasur Bozorovich Makhmayorov ; Bakhrom Azimjonovich Makhkamov ; Sherzod Mamarasulovich Qodirov ; Jasur Baykaraevich Farmonov

In this article, studies were carried out to substantiate the kinetic characteristics of the process of obtaining zinc sulfate from the zinc concentrate of the Khandiza deposit. For this, the effect of temperature and duration of the process of autoclave extraction of zinc in a 30% solution of sulfuric acid at a ratio of Zn:H2SO4=1:1.05 was studied. The variables were temperature 65, 70 and 75°C and the duration of the leaching process 60, 90 and 120 minutes.

204-207

Authors: Gulnara Abdullaeyvna Shakhmurova

In this work, it is shown that the effect of anti-inflammatory activity in some natural compounds can have an inhibitory effect on the exudative phase of inflammation similar to diclofenac-sodium in the body in rats. And it was also revealed that some stimulating processes of proliferation of the studied synthetic anti-inflammatory drugs.

213-217

Authors: QIan Yida

China and Uzbekistan established diplomatic relations in 1992 after the collapse of the Soviet Union. Since then, the two countries have maintained strong ties and achieved several diplomatic successes. Uzbekistan joined the Shanghai Cooperation Organization (SCO) as a founding member in 2001, a regional economic and security alliance that today consists of China, Russia, Kazakhstan, Tajikistan, Kyrgyzstan, Iran, India, and Pakistan. This paper studies international trade theories and the evolution of international trade relationship between Uzbekistan and CPR.

222-237

Authors: Svetlana Vasilievna Rubtsova ; Inna Dmitrievna Mikhailova ; Artur Alexandrovich Blagorodov ; Galina Yurievna Volkova

The article considers the possibilities of producing competitive and in-demand products, which are possible only if there are managers who are professionally trained and motivated for the results of their activities. The authors believe that the motivated responsibility of the leaders of light industry enterprises is the highest measure of expression of their professionalism. But if they do not fulfill their promises and statements, this is evidence either of their inability to engage in economic policy, or the use of economic management is carried out by them in interests alien to the interests of society, provoking the impoverishment of the people, characterizing the immorality of leaders, which, of course, is unacceptable. And it is understandable that the authors conducted the results of studies of objective reasons that would justify the decline in production in the light industry, therefore, the results of economic policy evaluation must be either beneficial or harmful - this should always be an axiom. If this does not happen, then something in this very economic policy is not a professional decision, actions are harmful to society and timely adjustments are needed. The authors recommend that the market reconsider the concept of forming it with demanded and import-substituting goods, taking into account their availability to consumers of products in the domestic and international markets. Such a concept will fully correspond to the desire of the consumer to satisfy his desire and desire to make a purchase, taking into account his social status, providing manufacturers with the full sale of their products and guaranteeing them sustainable TEP from the results of their activities.

241-244

Authors: Annaguly Rejepovich Deryaev

the article discusses the opening of productive horizons in the process of drilling a well with a solution of a hydrocarbon base of the "Versadril" type for dual completion (DC). In difficult geological conditions. The analysis of the state of oil and gas reservoirs opening at exploration and production areas, systematic studies of the influence of the drilling fluid on the hydrocarbon-based "Versadril" on the reservoir properties of productive formations, as well as the preservation of the natural permeability of the productive formation are given. Such work can be in demand and useful when drilling exploration and production wells in fields with difficult mining and geological conditions and abnormally high reservoir pressure, in order to open productive formations while preserving natural reservoir properties and increasing oil and gas recovery of formations.