ACTUAL PROBLEMS OF MODERN SCIENCE, EDUCATION AND TRAINING IN THE REGION 2018-III 1 ACTUAL PROBLEMS OF MODERN SCIENCE, EDUCATION AND TRAINING IN THE REGION 2018-III CONTENTS ACTUAL PROBLEMS OF MATHEMATICS, PHYSICS AND MECANICS………………………………………………………………...5 Joao O.V., Khujatov N. J. MATHEMATICAL MODELLING OF BLOOD FLOW………………………………………………………………………….....5 MODERN PROBLEMS OF TECHNICAL SCIENCES………………15 Mardonov B. T. INVESTIGATION OF THE ACCURACY OF THE INSTALLATION OF CYLINDRICAL SPUR GEARS WHEN MACHINING WITH ROLLING TOOLS IN THE CONDITIONS OF NMP MU NMMC…………………………………………………………………………..15 Sarimksakov A. A., Rashidova S. Sh., Baltaeva M. M., Eshchanov Kh. O., Shigabutdinov A. A. STUDY OF COPPER-POLYMER COMPLEXES AND THEIR PRODUCTION………………………………………………………..22 ACTUAL PROBLEMS OF NATURAL SCIENCES…………………..26 Ruzmetov B., Rakhimova M., THE MAIN FACTORS OF ECOLOGICAL AND ECONOMIC DEVELOPMENT OF THE REGION………………….26 ACTUAL PROBLEMS OF MEDICINE………………………………..31 Nazarov K. D., Ganiev A. G., Urumbaeva S. A., Abdurashidov A.A., FEATURES OF FOOD MANIFESTATION ALLERGY IN CHILDREN WITH ATOPIC DERMATITIS………………………………………………………………….31 Nazarov K.D., Ganiev A.G., Efimenko O., Botirov A.R., IMMUNOLOGICAL MECHANISMS OF DEVELOPMENT OF COMPLICATED FORMS OF ATOPIC DERMATITIS……………………………………………………….39 Saduilayev O.K., THE STUDY OF THE INTESTINAL MICROBIOCENOSIS OF CHILDREN SUFFERING FROM COLIANT DISEASES WITH TRADITIONAL METHODS…………………………….44 ACTUAL PROBLEMS OF HISTORY AND PHILOSOPHY ………...48 Nurullaeva Sh. K., ETHNOGENETIC ANALYSIS OF MEN’S TRADITIONAL HATS OF KHOREZM OASIS……………………………..48 Sheripov U. A., IMPLEMENTATION ON METHODS OF SCIENTIFIC RESEARCHES…………………………………………………………………53 Navruzov S. OREST SHKAPSKY’S OBSERVATIONS ON FIELD EXPERIMENTS IN THE AGRICULTURE OF KHIVA AT THE END OF 19TH AND EARLY 20TH CENTURY…………………………………………..57 Rakhmanova Y. M., THE ART OF MUSIC AND DANCE IN KHIVA KHANATE……………………………………………………………………...64 Anyоzov R. SOME COMMENTS ON THE ILLUSTRATION OF THE KHOREZM CARAVAN ROADS IN RUSSIAN HISTORIOGRAPHY (16TH AND 19TH CENTURIES)……………………………………………………..68 2 ACTUAL PROBLEMS OF MODERN SCIENCE, EDUCATION AND TRAINING IN THE REGION 2018-III Khojamuratov U. R., CONDITIONS IN AGRARIAN BRANCH IN UZBEKISTAN AT THE END OF THE 20th CENTURY…………………….72 Safarov T., THE CONSTRUCTION OF THE TRANSCASPIAN RAILWAY AND ITS ROLE IN DOMESTIC AND FOREIGN TRADE RELATIONS…76 Rakhmanova Y. M. THE ROLE OF WOMEN IN THE HISTORY OF CRAFTSMANSHIP OF KHIVIAN KHANATE……………………………..82 Nurimbetov R. I., Abdurakhimov M. D., DEVELOPING MANAGEMENT IN NATIONAL ARCHIVE AFFAIR……………………………………………..86 . Samanova Sh., RELIGIOUS TOLERANCE AND PHILOSOPHICAL BASIS OF RELIGIOUS BELIEFS……………………………………………………90 Rakhmanova Y. M., THE ISSUE OF WOMEN IN THE ANCIENT BELIEFS (IN THE CASE OF KHOREZM OASIS)……………………………………..95 MODERN PROBLEMS OF TOURISM AND ECONOMICS………100 Matyaqubov U. R., E.DEFRANCESCO OPPORTUNITIES OF DEVELOPING RURAL TOURISM IN KHOREZM REGION……………………………100 Gafurov A. B., THE ANALYSISES OF INTERNATIONAL FRAMEWORKS OF CORPORATE GOVERNANCE………………………………………...110 Quchkarov N. T., EVALUATION IMPACT OF FACTORS ON EFFECTIVE OPERATE EXPENSES………………………………………………………118 Muminov A.Z., DEVELOPMENT OF ECOLOGIC TOURISM IN UZBEKISTAN………………………………………………………………...123 Sadullaev A. METHODOLOGY OF DEMOGRAPHIC RESEARCH IN THE REGION(ON KHOREZM REGION)……………………………………….127 Doschanov T. D., Ataev J. E., SPECIFIC FEATURES OF FORMATION AND DEVELOPMENT OF AGRICULTURAL PRODUCTS MARKET IN UZBEKISTAN………………………………………………………………...136 Rakhimova S. M. MECHANISMS OF STATE SUPPORT FOR THE MEDICAL SERVICES MARKET…………………………………………..130 Xudayberganov D., Butanova D. DEVELOPMENT OUTCOMES OF RURAL ACTIVIY IN REGIONAL TOURISM……………………………………...142 Abdullaev I., Allayarov S.F., THE DEVELOPMENT OF SERVICE SPHERE IS A KEY TO PROVIDE EMPLOYMENT OF POPULATION IN THE REGIONS………………………………………………………...……………146 Khodjaniyazov E. S., THE IMPORTANCE OF DEVELOPING TRANSPORT INFRASTRUCTURE FOR TOURISM SECTOR IN UZBEKISTAN…………………………….…………………………………..151 3 ACTUAL PROBLEMS OF MODERN SCIENCE, EDUCATION AND TRAINING IN THE REGION 2018-III Abipova G.S., ESTABLISHMENT OF COMPETITIVE ENVIRONMENT IN THE PHARMACEUTICAL INDUSTRY AND MANAGING PRODUCTION COST…………………………………………………………………………..156 Abduganiev O. A., MODELING THE PROCESS OF PROVIDING FOOD SAFETY IN THE REGION…………………………………………………..161 Koriyev M. R., Nishanova I. R., TOURISTIC CAPABILITIES OF NAMANGAN REGION AND HOW TO USE ITS POTENTIALS IN AN EFFECTIVE WAY……………………………………………………………168 MODERN PROBLEMS OF PHILOLOGY AND LINGUISTICS…..173 Rakhimova U.S., IMPROVEMENT OF EFFECTIVENESS OF TEACHING RECEPTIVE TYPES OF SPEECH ACTIVITY TO THE STUDENTS OF NON-LINGUISTIC UNIVERSITIES……………………………………….173 Ruzimbaev S., Khudayberganova D., SPOKEN AUTHENTICITY OF HISTORICAL WORDS IN THE DASTANS (EPIC POEMS)……………..178 Khakimova F. I., Esanov A. Sh., ANALYSIS OF SOME PROBLEMATIC SITUATIONS IN UZBEK……………………………………………………186 Gaffarova D. V., THE POWER OF SHAKESPEARE’S REALISM……………………………………………………………………..191 ACTUAL PROBLEMS OF PEDAGOGY AND PSYCHOLOGY…....195 Rakhmonov N. R., REGIONAL ASPECTS OF IMPROVING THE EFFICIENCY AND QUALITY OF TRAINING DURING THE PERIOD OF REFORMS ON THE SYSTEM OF HIGHER EDUCATION ……………...195 Nafasov D. Sh., REFORMS IN THE TOURISM SECTOR IN UZBEKISTAN AS A DRIVING FORCE OF THE TOURIST CULTURE OF STUDENTS........................................................................................................203 Davletov E. Y., THE ROLE OF BASIC AND SCIENCE COMPETENCES IN SUPPORTING PUPILS’ MATURITY………………………………………208 Yadgarov B. J., Ro`zmetov R. N., Polvonov D. J., IMPROVING PHYSICAL READINESS OF TRACK AND FIELD ATHLETES IN COMPREHENSIVE SCHOOLS USING NATIONAL OUTDOOR GAMES………………….....212 Abdullaeva M., ISHAKHON IBRAT’S ROLE IN THE LAW.......................219 4 ACTUAL PROBLEMS OF MODERN SCIENCE, EDUCATION AND TRAINING IN THE REGION 2018-III ACTUAL PROBLEMS OF MATHEMATICS, PHYSICS AND MECANICS UDC: 514-9.3 MATHEMATICAL MODELLING OF BLOOD FLOW Joao Oliveria Venture Portugal, Professor of Porto University. e-mail: [email protected] Khujatov Nurbek Jumaboevich, PhD student of Urgench State University e-mail:[email protected] Annotatsiya: Ushbu maqolada katta qon tomirlarida qon oqimini tavsiflash uchun ikki fazli modelni taqdim etilgan. Ushbu modeldagi tadqiqotlar tomirlarda qon oqimining ma'lum xususiyatlariga (oqibatlariga) izoh beradi: gematokritning (paketlangan hujayra hajmining) tomirning diametriga bog'liqligi, tomir devorining yaqinida hujayra bo'sh plazmasi qatlami mavjudligi , qonning tezligi qon tomirningning diametriga bog'liqligi. Tadqiqotchi qon harakati o´zgarishi qon tomirlarining diametriga bog'liqligini aniqlaydi. Kichik tomirlarda qon oqimi (200 mikrondan kam) bilan qonning reologik xususiyatlari tomir kattaligiga bog'liq - qon tomirlarining diametrini pasayishi bilan qonning harakati o´zgarishi matematik usulda ko´rsatilgan. Kichik tomirlarda qon oqimini tavsiflash uchun tomir diametri bo'yicha boshqa parametrlarga bog'liq bo'lgan qon tenglamasini yaratishdan iborat. Kalit so´zlar: gematokrit, Poiseuil oqimi, matematik model, ikki fazali oqim, yopishqoqlik. АННОТАЦИЯ: В статье представлена двухфазная модель для описания кровотока в больших и малых кровеносных сосудах. На основе этой модели исследование дает объяснение давно известных признаков (эффектов) кровотока в сосудах: зависимость гематокрита (объем упакованной ячейки) от диаметра сосуда, наличие бесклеточного плазменного слоя вблизи стенки сосуда , тупые (по сравнению с профилем потока Пуазейля) профиль скорости крови; зависимость вязкости крови от диаметра сосуда. 5 ACTUAL PROBLEMS OF MODERN SCIENCE, EDUCATION AND TRAINING IN THE REGION 2018-III Исследователь определяет зависимости скорости крови и вязкости от диаметра кровеносного сосуда. При потоке крови в небольших сосудах (менее 200 мкм) реологические свойства крови зависят от размера сосуда - кажущаяся вязкость капель крови с уменьшением диаметра кровеносного сосуда. Чтобы описать поток крови в малых сосудах, необходимо создать уравнение состояния, которое зависит (помимо других параметров) от диаметра сосуда. Ключевые слова: гематокрит, поток Пуазейля, математическая модель, двухфазный поток, относительная вязкость. 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. Key words: hematocrit, Poiseuille flow, mathematical model, two-phase flow, relative viscosity. 1. INTRODUCTION 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