bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative Study Between The Clinical Effects of Glucosamine/Gingko Biloba & Glucosamine/Chondroitin in Treatment of Knee Osteoarthritis
Authors: Al-Rekabi Mohammed D.
Published: April 2023

Objectives: This study was designed to investigate the effect of two widely used combinations, glucosamine / chondroitin and glucosamine/ginkgo biloba on the clinical picture of patient with osteoarthritis (OA).
Methodology: Fifty one (51) osteoarthritis patients (21 male and 30 female) were participated in this researchdepending on certain selection criteria. The selected patient were randomly allocated into two groups: groupA includes 22 (9 male and 13 female) patients treated with a combination of glucosamine /gingko biloba (500/ 50 mg twice daily) for six weeks whereas group B includes 29 (12 male and 17 female) patients treated with a combination of glucosamine/chondroitin (500/ 400mg twice daily ) for six weeks . Effects of drug treatment were assessed each seven days by clinical evaluation and direct interview with patients through a questionnaire method known as Knee Injury and Osteoarthritis Outcome Score (KOOS).
Results: It was found that all components of KOOS including pain score, symptoms score, activity of daily living (ADL), quality of life (QOL) and sport & recreation scores were significantly elevated (improved) in both combinations, however, glucosamine /gingko biloba showed a better improvement when statistically compared with the combination of glucosamine/chondroitin.
Conclusions: It is concluded of this study that the glucosamine sulfate is more clinically useful for OA when combined with gingko biloba than when it is combined with chondroitin.
Recommendations: A large scale cohort study is recommended to ensure the clinical findings.
Effectiveness of an Educational Program on Nurses Practice Concerning Adult Cardio-Pulmonary Resuscitation in Talafar General Hospital
Authors: Hassan Hakemia S. , Zainel Ihsan H.
Published: April 2023

Objective: To evaluate the effectiveness of an educational program on nurses practices concerning Adult Cardio-Pulmonary Resuscitation in Talafar general hospital
Methodology: An experimental study was carried out at Talafar general hospital between the 1st October to1st February 2014. The program and instruments were constructed by the researcher for the purpose of the study.Random sample comprised of (80) nurses was divided into two groups, experimental group consisted of (40)nurses exposed to the nursing educational program and control group consisted of (40) nurses were not exposed tothe program. The measurement of effectiveness of nursing educational program through the practice checklistincludes (37) items concerning Cardio-Pulmonary Resuscitation. Reliability of instrument was determined throughthe use of test and retest and the instrument validity was determined through a panel of experts. The analysis of thedata was used descriptive statistics (frequencies, percentages, weighted and the arithmetic mean and standarddeviation) and statistical inferential (sufficiently relative test, Fisher test, chi square and Levin test) In order to findthe differences between the experimental group and the control group
Results: The study findings indicated that there were highly significant differences between pre and post tests inthe experimental group in overall main domains related to nurses' practice
Conclusion: The study concluded that the effectiveness of educational program regarding nurses' practiceconcerning the adult cardio-pulmonary resuscitation is a positive and clear
Recommendation: An intensive comprehensive wide population based education program was conducted tosupport nurse's practice toward adult cardio-pulmonary resuscitation
Update on pulmonary arteriovenous malformations
Authors: Salibe-Filho1 William , Rossetto de Oliveira1 Francini , Terra-Filho1 Mario
Published: April 2023

This review aimed to provide an overview of pulmonary arteriovenous malformations, including the major clinical and radiological presentations, investigation, and treatment algorithm of the condition. The primary etiology of pulmonary arteriovenous malformations is hereditary hemorrhagic telangiectasia (HHT), also known as Rendu-Osler-Weber syndrome, with mutations in the ENG gene on chromosome 9 (HHT type 1) or in the ACVRL1/ALK1 complex (HHT type 2). Epistaxis should always be evaluated when repeated, when associated with anemia, and in some cases of hypoxemia. In the investigation, contrast echocardiography and chest CT are essential for evaluating this condition. Embolization is the best treatment choice, especially for correction in cases of hypoxemia or to avoid systemic infections. Finally, disease management was addressed in special conditions such as pregnancy. CT follow-up should be performed every 3-5 years, depending on the size of the afferent and efferent vessels, and antibiotic prophylactic care should always be oriented. Ultimately, knowledge of the disease by health professionals is a crucial point for the early diagnosis of these patients in clinical practice, which can potentially modify the natural course of the disease.
Response to Letter to the Editor
Authors: Adeniji Folashayo , Obembe Taiwo
Published: April 2023

The authors respond to the comments raised in the letter regarding Adeniji and Obembe’s article on catastrophic health expenditures in sub-Saharan Africa.
Cryptococcal antigenaemia amongst HIV infected children in Owerri, South East Nigeria
Authors: Okeke Vivian Chinelo , Ezeogu Joseph , Nwolisa Charles Emeka , Egbuonu Ifeoma
Published: April 2023

Objective: Cryptococcosis is an opportunistic infection caused by Cryptococcus and can result in cryptococcal meningitis, which is an AIDS-defining condition associated with high morbidity and mortality. Although a high prevalence of Cryptococcal antigenemia (CrAg) preceding cryptococcal disease has been reported in HIV-infected Nigerian adults, it is more common in patients with low CD4, stage 3 or 4 HIV. However, there is only one study on Cryptococcal antigenemia in HIV-infected Nigerian children. Therefore, this study aimed to determine the burden of cryptococcosis in HIV-infected children.
Material and Methods: This study was a hospital-based cross-sectional study conducted between October 2018 and January 2019 at the Pediatric Infectious Disease Clinic of the Federal Medical Centre, Owerri. The study population consisted of HIV-infected children (aged 2-16 years) attending the clinic. The subjects were recruited consecutively and underwent a thorough physical examination and anthropometric measurements before a single blood sample was taken. Cryptococcal antigen was assayed using the Lateral Flow Assay method, and CD4+ counts were assayed using cyflow.
Results: A total of 100 children were involved in the study, of which 51 (51%) were female and 49 (49%) were male (M:F, 1:1). The average age of the participants was 9.73 ± 3.12 years. Among the 100 children tested, there was no cryptococcal antigenemia (0%). Statistical analysis was limited to simple description.
Conclusion: Cryptococcosis is not a common opportunistic infection among HIV-infected children attending the Pediatric Infectious Disease Clinic in Federal Medical Centre Owerri. Therefore, it may not be considered as a differential diagnosis for HIV-positive children with meningoencephalitis.
Research Progress on Prevention and Treatment of Hypoxemia in Painless Gastroscopy: A Review Article
Authors: Ma Jun , Tan Ling
Published: April 2023

Compared to ordinary gastroscopy, painless gastroscopy has more advantages due to the application of anesthesia techniques such as sedation and analgesia, providing patients with comfort and a quick recovery. However, patients undergoing painless gastroscopy are often at risk of hypoxia, which can result in serious complications. Fortunately, more anesthesia providers have recognized this problem. Therefore, it is essential for anesthesia providers to identify risk factors to prevent hypoxemia. In conclusion, this review highlights the assessment of risk factors for hypoxemia in painless gastroscopy and common airway management methods to prevent and treat hypoxemia in high-risk populations during painless endoscopy.
ADVANTAGES OF USING PRE-HARVEST PAPER BAGS FOR SEASONAL PROTECTION OF APPLE FRUITS
Authors:   Junior Scientist, Kayumov Abdurashid ,   Scientific Research Institute of Horticulture, Viticulture and Winemaking named after academician M. Mirzaev, Karakhodjayeva Gulchexra ,   Researcher,  Scientific Research Institute of Horticulture, Viticulture and Winemaking named after academician M. Mirzaev
Published: April 2023

Physiological disorders such as fruit rot, skin stains and blackening of the inside of the fruit are encountered when storing Pink Lady apples. The new ecologically friendly practice – fruit wrapping in paper bags during the season is applied for protecting fruits against diseases. Paper bags protect fruits from sunburn and provide favorable conditions for preserving essential elements for a long time. The chemical composition of fruits protected by this method and the role of calcium in the good preservation of fruits has been studied. Moreover, it is noted that this method is effective for growing organic products.
IMPROVEMENT OF STRENGTH AND WEAR RESISTANCE OF 65G STEELS BY METHODS OF THERMOCYCLING
Authors:   Deputy Head of the Central Design Bureau,   Navoi Mining Metallurgical Combinat, Karimov N. K. , Egamberdiev I. P. ,   PhD Student   Navoi Branch of the Academy of Sciences of the Republic of Uzbekistan, Ashurov Kh. Kh. ,   Assistant, Department of Mechanical Engineering   Navoi State Mining Institute
Published: April 2023

The article presents the results of experimental studies that establish the features of increasing the strength and wear resistance of steels after thermocycling. Thermocyclic treatment as a method of heat treatment is based on continuous accumulation from cycle to cycle of positive changes in the structure of metals. An important feature of the cycle is its intensity, the absence or the presence of short exposures, and the optimal range of temperature changes. The paper establishes the laws of the influence of the temperature-time parameters of thermocyclic processing on the physicomechanical properties of tool steel and the technology of hardening machine parts due to the intensification of diffusion processes, phase and structural transformations, which reduce the duration of heat treatment and improve the whole complex of mechanical properties, that is the reliability of machine parts. Based on theoretical and experimental studies, it has been established that the production of ultrafine grains contributes to an increase in the wear resistance of steels. When using thermal cycling, higher characteristics of mechanical properties were obtained, fracture toughness increased by 1.5 times, and wear resistance increased by 1.9 times. This is due to the nature of the resulting structure and the degree of grain refinement.
PROSPECTIVE DIRECTIONS OF EMPLOYMENT FOR WOMEN
Authors:   Doctor of Economics, Professor of the Department ", Bobonazarova Zh. Kh. ,   Management",   Jizzakh Polytechnic Institute, Shukurova M. ,   Student   Jizzakh Polytechnic Institute
Published: April 2023

The article identifies various mechanisms, measures and means of state regulation of women's employment, and offers recommendations for increasing the effective employment of women based on the real needs of the economy. Recommendations for improving the employment of women in rural areas were proposed taking into account the possibility of their participation in family and private entrepreneurship in order to create new jobs and preserve existing ones. The main obstacles to the employment of women in rural areas are determined by socio-psychological, economic, financial, organizational, and demographic factors, which are the result of housekeeping, raising children, the level of professionalism, development of social infrastructure and demographic identity. To assess employment and unemployment among women in rural areas, the methodology for assessing socio-economic relations between employers and unemployed women has been improved based on the results of a sociological survey
EFFECTIVE USE OF THE TAX MECHANISM IN THE INNOVATIVE DEVELOPMENT OF ECONOMY
Authors:   Doctor of Philosophy in Economics (PhD), Associate Professor of the Department of Taxes and Taxation   Banking and Finance Academy of the Republic of Uzbekistan, Giyasov S. A.
Published: April 2023

The article studies the possibilities of effective use of the tax mechanism in the innovative development of the economy. It deals with the scientific and theoretical aspects of tax regulation of the innovative economy, the economic essence of the innovative economy and the tax mechanism. The current state of tax incentives provided for research and innovation activities, in particular, the impact of tax incentives on research and innovation activities of enterprises is critically analyzed. The research provides relevant conclusions, scientific proposals and practical recommendations.
THEORETICAL FEATURES AND MECHANISMS OF OPTIMIZATION
Authors:   Doctor of Economics, Head of the Department ", Yusupov Erkin ,   Agribusiness and Investment",   ,Tashkent State Agrarian University
Published: April 2023

This article analyzes the main directions of reforms carried out in the agricultural sector or as one of the main economic and management measures carried out for the development of farms and the results of optimizing the size of their land plots, as well as the author's theoretical positions on solving this problem have been provided.
FORMING OF ZINC OXIDE NANOPARTICLES IN AQUEOUS SOLUTIONS OF CARBOXYMETHYLCELLULOSE AND THEIR MORPHOLOGICAL CHARACTERISTICS
Authors:   Doctor of Technical Sciences, Professor  nstitute of Polymer Chemistry and Physics, Uzbekistan Academy of Sciences, Uzbekistan, Sarymsakov A. A. , Yunusov Kh. E. ,   Doctor of Technical Sciences, Senior Researcher  Institute of Polymer Chemistry and Physics, Uzbekistan Academy of Sciences, Uzbekistan, Mirxolisov M. M. ,   Junior Researcher  Institute of Polymer Chemistry and Physics, Uzbekistan Academy of Sciences, Uzbekistan, Agabekov V. E. ,   Academician, Doctor of Chemical Sciences, Professor  State Scientific Institution “Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus”, Vladimirovna Zh. I. ,   Doctor of Philosophy in Chemical Sciences (PhD)  State Scientific Institution “Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus”, Vladimirovna E. A. ,   Researcher  State Scientific Institution “Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus”, Vasilievna A. P. ,   Researcher,  State Scientific Institution “Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus”, Еvgenevna E. Sh. ,   Researcher  State Scientific Institution “Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus”
Published: April 2023

The article reviews conditions required for synthesis of polymer-metal compositions containing different sizes of zinc oxide nanoparticles based on purified sodium-carboxymethylcellulose (Na-CMC) with degrees of substitution 0,80-0,85 and polymerization 950-1050 and zinc nitrate crystalhydrate (Zn(NO3)2·6H2O) solutions using a chemical method at 80 ⁰C. Physicochemical properties of Na-CMC samples containing stable zinc oxide nanoparticles of various sizes and shapes were determined by FTIR spectroscopy, atomic force microscopy, X-ray diffractometric analysis.
ELEKTRONIC DICTIONARY BUSINESS PROCESS MODELING: AN EXAMPLE OF ALISHER NAVOI’S ANNOTATED DICTIONARY
Authors:   Master of Computer Linguistics  Tashkent State University of Uzbek Language and Literature named after Alisher Navoi, Khusainova Z. Yu.
Published: April 2023

In the modern era of the rapid development of information technology, the electronization of the necessary resources is important. Currently, electronic services have been introduced into various areas of our daily life, work and scientific activities. This allows users to use it anytime, anywhere. Another source is electronic dictionaries. It is especially important to convert ancient sources into electronic form. One of such electronic sources is the electronic annotated dictionary of Alisher Navoi’s works, the creation of which requires the solution of a number of tasks. That is, the translation of an annotated dictionary of author’s works into an electronic (.doc, .xls, .txt) form, modeling the business process of an electronic dictionary information system, developing a system database and consolidating data, and finally creating an electronic dictionary information system using the capabilities of programming languages. The development of this information system was based on international standards for electronic dictionaries. An electronic dictionary of Alisher Navoi’s works will be created so that schoolchildren, students, independent researchers and researchers can fully understand the work of the great thinker
SEASONAL CHANGES IN SPERM PRODUCTION AND SOME CLINICAL INDICATORS OF BREEDING BULLS-SPERM DONORS IN THE CONDITIONS OF UZBEKISTAN
Authors:   Doctor of Agricultural Sciences, Professor of the Department of General Zootechnics and Veterinary Medicine  Tashkent State Agrarian University, Dustmukhammedova M. H. , Allayarov Sh. Sh. ,   Doctoral Student of the Department of General Zootechnics and Veterinary Medicine  Tashkent State Agrarian University
Published: April 2023

In the production of livestock and other products, productivity depends on adaptive properties of the animal organism to environmental factors. At the same time, the most important indicators of adaptive characteristics are quantitative and qualitative indicators of the sperm productivity. At the same time, within a year, depending on seasons of the year, some clinical indicators of the body also differ, however there is correlation between these two factors. The study of these issues in the conditions of Uzbekistan and its findings can be used effectively in planning, organizing and managing this process. It is known that pedigree bulls-sires of cattle are imported into the republic (except for pedigree bulls of the Bushuev breed). In the course of our experiments, seasonal changes in the seed productivity of sperm donors of imported young bulls and local Bushuev bulls were studied by comparing some of their physiological indicators. It is due to the fact, that one of the indicators directly related to the level of productivity of animals is their physiological state of body. Of course, it is important to calculate clinical indicators, because it is on the basis of this information that it can be assumed that the animal is adapted to a particular environment, and its seed production is expected in the near future.
NOCTUIDAE OF MARIGOLD AND THE SIGNIFICANCE OF ENTOMOPHAGES IN THE REGULATION OF THEIR NUMBERS
Authors:   Assistant   ,Tashkent State Agrarian University, Ruzikulov D.
Published: April 2023

This article provides information about the role of entomophages in the fight against Noctuidae and their numbers. As a result of research, calendula officinalis is harmed by Heliothis armigera Hb, Phytometra gamma L, Agrotis segetum Den. et Schiff, Agrotis exclamationis L and Leucania vibellina Hb. Among them, the cotton bollworm is the most common and harmful species. It is known in the pharmaceutical industry as the main raw material used inflorescence of calendula – basket. These pests severely damage not only the roots or stems of plants, but also the most valuable organ – the flower basket. The article discusses the effectiveness of the biological application of the entomophage bracon against the cotton bollworm. When using the entomophage bracon in pest control in the ratio of 1 : 5, the entomophage showed the best efficiency of 78.5-88.2%.
FINANCING MODELS FOR HIGHER EDUCATIONAL INSTITUTIONS
Authors:   Independent Researcher  Tashkent Institute оf Finance, Abdukhaparova D. M.
Published: April 2023

Nowadays, one of the most pressing issues across the world is the efficient use of budgetary funds, ensuring their targeted spending, optimizing public expenditure and attracting private investment into national economies. This article provides a comparative analysis of studies by various local and foreign scientists on the essence of financing models for higher educational institutions in the republic, their specifics, and a mechanism for effective financing of the education system. As well as, it presents proposals and recommendations on procedures for financing higher education institutions in the country and expanding extrabudgetary financing of the higher education system.
ECONOMIC EFFICIENCY OF THE WALNUT PRODUCTION ON THE FARMS
Authors:   Independent Applicant, Senior Lecturer of the Department “Agrieconomics and tourism”   Tashkent State Agrarian University, Inobatov A. B.
Published: April 2023

Agrarian reforms carried out in the agriculture of the republic, along with the development of production sectors, provide diversification of products, development of new areas, as well as expansion of previously unclaimed areas on the world market, but today the demand for which is growing. At the same time, the effective use of opportunities of dehqan farms and family household plots is of great importance. Given the importance of the walnut, which is in high demand on the world market, one of the modern requirements is to further stimulate and increase the efficiency of the use of rain fed lands in the republic, the widespread introduction of scientifically based methods and intensive technologies for growing walnuts and the creation of modern walnut plantations with an increase in production competitive in the domestic and foreign markets for walnuts. In our monographic study, when studying dehqan farms and family household plots in the Parkent district, it was found that the number of walnuts available in the farmsteads is 3 612 pieces. In the course of a survey of dehqan farms and household plots of the district, it was noted that by placing new varieties of walnut, it is possible to obtain a good income, long-term return on investment, low cost. The article describes the results of research in important areas, based on the characteristics of the current stage of development of walnut cultivation in dehqan farms.
A RESEARCH INTO AN ARRAY AND BASIC PARAMETERS OF THE DEVELOPMENT SYSTEM FOR COMPLEX STRUCTURAL FACING STONE IN UZBEKISTAN
Authors:   Doctor of Philosophy in Technical Sciences (PhD), Head of the Mining Electromechanics Department  Navoi State Mining and Technological University, Makhmudov A. M.
Published: April 2023

The scientific paper has investigated a range and parameters of the block stone mining system in Uzbekistan. Scientific researches, made by leading scientists in this field, have been closely reviewed. Methods of assessment of fracturing and blockiness of massif based on correlation between linear and area indices of natural separations in massif have been applied. A technological scheme of face orientation in relation to fracture systems has been developed. Possible technical productivity of stone blocks extraction using different methods of preparation for excavation has been determined. Rational areas of various methods of stone block preparation for excavation and optimum technological parameters are established.
ANALYSIS OF THE FRACTIONAL AND CHEMICAL COMPOSITION OF SEDIMENTS OF THE CHARTAK RESERVOIR
Authors:   Doctor of Philosophy in Technical Sciences (PhD)  Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, Xoshimov S. N. , Babajanov F. K. ,   Doctor of Philosophy in Technical Sciences (PhD)  Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, Ortikov I. A. ,   Doctoral Student  National Research University
Published: April 2023

In the modern era, when climate change has become a global problem, the efficient use of water resources becomes an important task. Field studies were carried out at the Chartak reservoir. Field and laboratory studies are presented to determine the amount of sediment entering the reservoir and its fractional and chemical composition. When determining the amount of sediment entering the stream, characteristic sections were determined along the length of the reservoir, and samples were taken from each section with a bathometer at different times of the season, which the laboratory passed through the filter. According to the analysis of the results, the average amount of incoming sediment was 0.3-0.5 g/l, and the amount of turbidity at the exit was 0.05-0.08 g/l. Samples of sediments settled in the basin of the reservoir were taken and analyzed for fractional and chemical composition in the laboratory of the Hydroproject corporation. According to the fractional composition of sediments, particles with a diameter of 1.0-0.5 mm accounted for 13.98%, 0.5-0.25 mm – 11.49%, 0.25- 0.10 mm – 7.56%, 0.10-0.05 mm – 10.48%, 0.05-0.01 mm – 26.8%, 0.01-0.005 mm – 13.34%, 0.005-0.002 mm – 16.42%. If we pay attention to the distribution and proportion of sediments in the sections, then 35- 40% are coarse-grained (d = 1.0-0.1 mm) particles and 50-60% are fine-grained (d = 0.05-0.001 mm) particles. Sediments consist mainly of particles rich in trace elements useful for crop areas.
DEVELOPMENT OF TRAINING SOFTWARE FOR QUANTITATIVE INTERPRETATION OF THE GRAVITY DATA
Authors:   Department of Geophysical Research Methods, Faculty of Geology and Geoinformation Systems, Research Assistant  National University of Uzbekistan named after Mirzo Ulugbek, Ziyabov Sh. R. , Oripov N. K. ,   Basic Doctoral Student  The Academy of Sciences of the Republic of Uzbekistan Institute of Seismology named after G. Mavlyanov, Mamarozikov T. U. ,   Basic Doctoral Student  The Academy of Sciences of the Republic of Uzbekistan Institute of Seismology named after G. Mavlyanov
Published: April 2023

Education is an integral part of the human life, and while introduction of information technology in this area, the use of software and hardware (cinema, audio and video equipment, computers, telecommunications networks) allows speeding up learning processes, their optimization, boosting up students’ interest in studying science, as well as it enables raising the quality of teaching and the amount of independent work. This, in turn, contributes to forming of logical thinking, a culture of intellectual, and independent work skills in students. In this regard, a group of young scientists have developed a computer-based practical training program for students studying geology, for the purpose of in-depth training in the geophysical method of exploration of gravity. Gravimetric data are a valuable source of information about the geological structures of the territory, on underground mineral deposits. Qualitative interpretation of gravimetric data and effective application of the method makes it possible to make modeling based on the density of underground structures. The program allows students to get necessary ideas about selection methods, degrees of accuracy of gravity exploration, solutions of direct and inverse problems, and simulation modeling. The program is intended for use in all browsers of the Windows family (7/8.1/10/11). The practical training program is free and can be accessed by registering on the browser page.
EFFECTIVE USE OF THE GEORESOURCE POTENTIAL OF DEEP ORE PITS AND THE RATIONALE FOR A CHOICE OF MECHANIZATION MEANS ACCORDING TO A NATURAL AND TECHNOLOGICAL LOCATION OF INDIVIDUAL DEPOSITS
Authors:   Doctor of Technical Sciences, Dean of the Mining Faculty , Navoi State Mining and Technology University, Mislibayev I. , Makhmudov Sh. ,   Doctor of Philosophy in Technical Sciences (PhD), Associate Professor, Department of Mining Electromechanics , Navoi State Mining and Technology University
Published: April 2023

The scientific paper reviews operation and operating conditions of deep pits. The division of the quarry field into natural-technological areas and their classification have been made. The work also provides schemes of division of the open pit field into conventional natural-technological zones and of complex mechanization of natural-technological zone by the cyclic action equipment. The dependence of the rate of mining decline on the width of the working site has been maintained. Strategic technical solutions to help manage mining manufacture and complex continuous planning and design of mining operations as well as division of working space into pit zones, have been elaborated. A nomogram for determining the parameters of excavation blocks based on the rate of decline of mining works for different sizes of excavators and a structural scheme of complex mechanization of natural and technological zones by cyclic-flow technology have been provided.
STUDYING THE EFFECT OF THE INCOMING FLOW SPEED ON THE EFFICIENCY OF CYCLONES
Authors:   Doctor of Philosophy in Technical Sciences (PhD), Associate Professor  ,Tashkent Institute of Textile and Light Industry, Murodov O. , Adilova A. ,   Senior Lecturer , Tashkent Institute of Textile and Light Industry
Published: April 2023

A study into the influence of the speed of the incoming dust flow and a size of the inlet of a cyclone on its performance. The structure of the flow field has been investigated by calculations made using the Reynolds Stress Turbulence Model (MTNR) for a cyclone separator. The findings show that the maximum tangential velocity in the cyclone decreases when the entry size to the cyclone increases. No acceleration occurs within the cyclone body (maximum tangential velocity is almost constant throughout the cyclone). Increased size of the cyclone inlet reduces the drop of pressure. The cyclone's cutoff diameter increases with the cyclone's inlet size (therefore, the overall efficiency of the cyclone decreases due to a low vortex strength). The effect of altering the entry’s width is more significant than its height, especially for the cut-off diameter. The influence of simulations of velocity fluctuation on prediction of collection efficiency of cyclone separators has been numerically investigated using MTNR and large eddy simulation (MBV). The Euler-Lagrange modeling approach was used by Solidworks Flow Simulation to simulate 3D non-stationary turbulent gas and solid flows in the high-efficiency Starmand cyclone. The simulation results have been compared with available reference data. An analysis of the findings shows that the MTNR and MBV could adequately predict the mean flow field. The study shows that the (MBV) performs well in predicting fluctuating flow field and capture efficiency for each particle size. The results show that prediction of collection efficiency, especially for fine particles, is greatly influenced by simulation of velocity fluctuations in cyclones.
MAKING USE OF A ‘SPACY’ MODULE IN THE NATURAL LANGUAGE PROCESSING
Authors:   Doctor of Philosophy in Technical Sciences (PhD), Associate Professor, Head of the Department of Computational Linguistics and Digital Technologies  Tashkent State University of Uzbek Language and Literature named after Alisher Navoi, Elov B. B.
Published: April 2023

This article discusses the use and tools of the spaCy module, which is written in Python machine language, in the Natural Language Processing (NLP), considered as one of the main areas of computer linguistics. A text in a natural language contains separate units (symbols) and can be divided into several interrelated parts belonging to different levels. The article, therefore, presents methods for tokenizing text using the spaCy library tools as well as the lemma, POS, tag, dep, shape, alpha, and stop attributes generated in a pipeline process.
WEAR RESISTANCE OF ROLLER BEARING ELEMENTS WITH TAPERED ROLLERS
Authors:   Doctor of Philosophy in Technical Sciences (PhD), Assistant of the Department of Strength of Materials and Machine Parts  Tashkent State Technical University named after Islam Karimov, Irgashev B. A. , Zhumanov R. M. ,   Doctoral Student  Tashkent State Technical University named after Islam Karimov
Published: April 2023

This article describes the development of methods for calculating the wear resistance of tapered roller bearings of trucks, and presents findings from the research work implemented in order to determine the wear resistance of friction pairs operating in the presence and absence of abrasive particles in the oil of the main transmission in a motor vehicle, friction pairs inner ring – roller and outer ring - roller bearings operating in rolling with slippage and pure rolling.
COMPETITIVE ADVANTAGES OF THE INNOVATIVE DEVELOPMENT OF THE REPUBLIC OF UZBEKISTAN: ANALYSIS OF STRENGTHS AND WEAKNESSES IN THE GLOBAL INNOVATION INDEX
Authors:   Doctor of Philosophy in Economic Sciences (PhD), Center for Scientific and Technical Information  Ministry of Innovative Development of the Republic of Uzbekistan, Abduvaliev A. A.
Published: April 2023

We have reviewed the rating list of the Global Innovation Index (GII), including strong and weak indices/sub-indices, in view to determine a feasibility for the Republic of Uzbekistan to enter the list of 50 advanced countries. The research is based on a comparative analysis of the strong and weak indices/sub-indices of 50 leading countries of the GII rating, and indicators pertaining to the Republic of Uzbekistan. The findings prove the fact of competition among 50 advanced countries for high positions in the ranking. The research had revealed a growth of the number of transition economies in this group and made a comparative analysis of those countries.
ASSESSMENT OF CLUSTERING OF POTENTIALS OF THE ECONOMIC SECTORS OF REGIONS
Authors:   Doctor of Economic Sciences, Professor of the Department of «Regional Economy and Management»  National University of Uzbekistan named after Mirzo Ulugbek, Sodikov A. M. , Begimova D. K. ,   Doctoral Student, Department of «Regional Economy and Management»  National University of Uzbekistan named after Mirzo Ulugbek
Published: April 2023

The article is devoted to the issue of assessing the potentials of clustering of economic sectors of regions. The article reviews methods developed by scientists from the United States, Western Europe and the Russian Federation, on assessing the potential of regions for organization and development of cluster activities (potential of clustering). Based on the study of the foreign experience, the author has elaborated a method for assessing potentials of clustering of economic sectors of the regions of the Republic of Uzbekistan. The proposed method was used for assessing potentials of clustering the textile, food, beverage, leather and related industries having relatively high share in the economy of the Bukhara region. The data provided by the State Statistics Department of the Republic of Uzbekistan, was used as a source of information for the study. The assessment showed that the clustering potential of the textile and clothing industry in the region is higher than of other sectors, thence it was recommended to develop clustering activities belonging to this sector in the region. The proposed method was recommended for use by regional authorities in determining directions of their economic policy.
ANALYSIS OF THE COMPOSITION OF RIVER SEDIT IN IRRIGATION CANALS
Authors:   Professor, Doctor of Technical Sciences  “Tashkent Institute of Irrigation and Agricultural Mechanization Engineers” National Research University, Arifjanov A. M. , Samiyev L. N. ,   Associate Professor, Doctor of Philosophy in Technical Sciences (PhD)  “Tashkent Institute of Irrigation and Agricultural Mechanization Engineers” National Research University, Babajanov F. K. ,   Doctor of Philosophy in Technical Sciences (PhD)  “Tashkent Institute of Irrigation and Agricultural Mechanization Engineers” National Research University
Published: April 2023

The article is devoted to the analysis of mechanical and chemical composition of river sediments in irrigation canals. Movement of river drains, which constitute an integral part of water resources, in the riverbed, hydraulic structures and on cultivated lands, forms a sort of a global cycle in nature. According to hydrological studies, only in the very bed of Amu Darya, it is possible to observe movement of a huge amount of runoff throughout the year. From the monitoring of irrigation channels used in Uzbekistan, it is known that for efficient and safe operation of many structures in an optimal mode, scientifically sound management and efficient use of river flows negatively affect the lack of methods and technologies, as well as effective solution of these issues does. Experiments conducted in natural field conditions helped to draw conclusions based on the study of mechanical and chemical compositions of river sediments along the length of canals.
DETERMINING THE OPTIMAL PARAMETERS OF AN AIR-IONIZER FOR REVIVING THE SEED PROCESS OF THE SILKMOTH
Authors:   Assistant,  Kokand branch of Tashkent State Technical University, Abdunabiev D. I.
Published: April 2023

The article scrutinizes the use of an air ionizer in the process of silkworm incubation. During the study, the authors created a device with two new functions: artificial air ionization and ventilation. Experimental tests were carried out in the laboratory “Combating diseases and pests of the silkworm and mulberry tree” at the Research Institute of Sericulture. Research was conducted on different breeds, crossbreeds and terms. The first tests took place in spring 2022. Germination of silkworm seeds enabled determining the duration of the seed opening process and the percentage of germination. It turned out that the newly created electro-technological device helps both - purifying the air and stimulating silkworm seeds. According to the research findings, it is possible to accelerate the development of the embryo inside the silkworm seed with the help of an air ionization electro-technological device. At the same time, the ionized air produced by this device has a positive effect on silkworm seeds.
ASSESSMENT OF THE QUALITY OF ECONOMIC GROWTH IN AGRICULTURE
Authors:   Associate Professor  Gulistan State University, Abduvokhidov A. A. , Eshpulatov D. B. ,   Doctoral Student  Gulistan State University, Kodyrova D. O. ,   Lecturer  Gulistan State University
Published: April 2023

The issue of economic growth is one of the main macroeconomic problems that have always interested economists. Another aspect of the problem is also manifested in the current macroeconomic situation. That is, nowadays we are talking not only about economic growth, but also about studying factors that determine its quality. However, no specific indicators have yet been found that allow it to be fully measured. In this regard, this article will try to analyze indicators of economic growth in the agricultural sector of our republic. As the main indicators that ensure quality of economic growth in agriculture, such indicators as material return, capital return and labor productivity have been chosen. As a result of the study, we found out that the return on material and capital in agriculture is declining, while the labor productivity index is increasing. In course of presentation of the materials, the definitions given to the concept of economic growth were refined, and statistical indicators that determine the quality of economic growth in agriculture were systematized. The findings obtained in the course of the study make it possible to identify the nature of economic growth and make comparisons with best practices. Specific conclusions and proposals were also made to ensure high-quality economic growth in agriculture in our country.
DIGITALIZATION OF THE INSURANCE MARKET OF UZBEKISTAN: TRENDS AND INNOVATIVE TECHNOLOGIES
Authors:   Doctor of Economic Sciences, Professor of the Department of “Regional economy and management”  National University of Uzbekistan named after Mirzo Ulugbek, Sodikov A. M. , Musaeva D. D. ,   Basic Doctoral Student  National University of Uzbekistan named after Mirzo Ulugbek
Published: April 2023

The purpose of the article is to scrutinize theoretical and practical principles of digitalization and identify its main trends in the insurance market of Uzbekistan. Digitalization has been defined as not just digitization of information and its distribution using modern telecommunication channels, but as a process of application of modern telecommunication and innovative technologies destined to improve customer service for an insurance company. Taking into account current practices in the field of insurance we have identified and analyzed such main innovative technologies as websites, social networks, chat bots, video hosting, video telephony, cloud technologies and etc. The share of insurance companies having website accounts makes 80% of the total number of insurers listed on the State Register of Financial Institutions in Uzbekistan. Based on the information posted on the official websites of insurance companies, we have reviewed the use of individual elements of innovative technologies. On this basis, there have been six main trends in digitalization of the insurance market identified, with: digitalization as a new domain in shaping of the insurance market, has just started up in Uzbekistan, and is rapidly developing; expansion of the digital insurance system, which includes a whole range of new services offered by insurance companies to potential clients and existing insurers; forming of a mobile insurance system by means of mobile applications; introduction of telematics; use of automated systems for insurance services and cloud technologies.
ANALYSIS OF THE ORGANIZATIONALECONOMIC MECHANISM TO IMPROVE THE SUSTAINABILITY OF ECONOMIC GROWTH IN AGRICULTURE
Authors:   Doctoral Student , Gulistan State University, Eshpulatov D.
Published: April 2023

Ensuring the sustainability of economic growth in the country is one of the main macroeconomic objectives for any national economy. Sustainable and inclusive economic growth can lead to the creation of appropriate jobs, development and ultimately improve the quality of life for all. Therefore, this article analyzes organizational and economic mechanisms to ensure sustainable economic growth. Foreign and domestic scientific literature was analyzed using empirical theoretical methods. Based on of the results obtained, the main indicators reflecting economic growth in agriculture were identified and systematized. Statistical indicators were analyzed by groups at macro-, meso- (individual industry) and micro- (enterprise) levels. As a result of assessing the level of sustainability of economic growth indicators on the basis of analysis of variance, a high level of instability in a number of indicators was determined. Also, the comparative analysis revealed similarities when comparing private indicators with international indicators. At the same time, by generalizing the results of scientific research, theoretical and practical proposals for improving the mechanisms of sustainable economic growth in agriculture were given.
CALCULATION OF GEOMETRIC PARAMETERS AND HYDRODYNAMIC PROPERTIES OF VENTURI PIPES IN SELF-DRAINING SOLAR HEAT SUPPLY
Authors:   Doctoral Student ,  Tashkent Institute of Architecture and Civil Engineering, Karshiev Sh.
Published: April 2023

This research work is aimed at ensuring the improvement of energy efficiency and reliability of self-directed solar heating by optimizing the hydrodynamic modes of operation. Proceeding from this purpose, the tasks of the research are to analyze existing methods of protecting solar collectors of water heating and hot water supply systems from freezing and to reveal the most perspective methods. One of the tasks is also to determine the laws of hydrodynamics in self-draining of solar heat supply.
CHALLENGES OF THE NEW AGE: ENSURING THE QUALITY OF EDUCATION IN THE “UNIVERSITY 3.0” MODEL
Authors:   Doctor of Physical and Mathematical Sciences, Professor, Head of Department , Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan, Nematov Sh. , Mannanov U. ,   Doctor of Technical Sciences, Professor, Vice-Rector for International Relations,  Tashkent State Technical University named after Islam Karimov, Dudko N. ,   Head of the Department of International Scientific and Technical Cooperation  ,Republican Innovative Unitary Enterprise “Scientific and Technological Park of BNTU “Polytechnic” (Republic of Belarus), Mukhiddinov Z. ,   Doctor of Philosophy in Technical Sciences (PhD), Associate Professor, Head of the Department of Mechanical Engineering Technology,  Tashkent State Technical University named after Islam Karimov
Published: April 2023

The article analyzes institutional models of ‘a modern university’, tasks, functions and features of higher education institutions in the context of the “University 3.0” concept, which envisages integration between commercialization of educational achievements, science, innovation and research in higher education institutions, as well as modernization and development of higher education system in our republic, as well as internationalization of the academic education network. The stages of change for transition to a university - entrepreneurship (3.0) depending on transformational processes observed in the current higher education system, have been justified. Opening of venture funds and banks ensuring secured benefits and introduction of a mechanism for providing special incentives to residents who deal with commercializing existing innovative developments and accommodating residents with innovative research and production centers (Technoparks) established at universities, has been recommended on the basis of advanced universities.
WAYS OF ORGANIZING AND DEVELOPING RESEARCH AND INNOVATION CENTERS IN UNIVERSITIES
Authors:   Academician of the International Academy of Informatization, Doctor of Economics, Professor  Tashkent State University of Economics, Berkinov B. B. , Abdurakhmanova G. K. ,   Vice-Rector for Science and Innovation, Doctor of Economics, Professor  Tashkent State University of Economics, Amirov L. F. ,   Dean of the Economics faculty, Doctor of Philosophy in Economics Sciences (PhD), Associate Professor  Tashkent State University of Economics
Published: April 2023

The article proposes innovative ways of creating research laboratories (centers) for the development of scientific and innovative research in higher education institutions. The study also explains the basic criteria and conditions for selecting relevant research and innovation topics, the sources of funding to create research laboratories, the mechanisms of gradual employment of qualified scientific personnel in the laboratory and the use of a credit-module system.
METHODOLOGICAL FOUNDATIONS OF EFFECTIVE MECHANISMS TO REDUCE INFORMAL EMPLOYMENT IN RURAL AREAS
Authors:   Doctor of Economics Sciences, Professor  Tashkent State Economic University, Kholmuminov Sh. R.
Published: April 2023

This article develops methodological foundations for effective mechanisms to reduce informal employment in a digitized socially oriented market economy. The situation with informal employment of able-bodied population in rural areas of our republic is systematically analyzed. The need for methodological research to reduce informal employment is based on an in-depth analysis of the scientific views of foreign and domestic economists. According to the results of scientific research, the main types of employment in the informal sector of the economy are identified and their structural elements are categorized. On the basis of these methodological studies effective economic, sociodemographic and organizational-legal mechanisms to reduce informal employment in rural areas and the interdependence of their components are identified. From the methodological point of view, this article develops scientifically substantiated conclusions and recommendations to improve the effectiveness of the main mechanisms to reduce informal employment of able-bodied people in rural areas.