All articles - Physics

Number of articles: 8
  • The concept of a system of nonlinear equations, the stages of solving the problem, the geometric interpretation of the solution of the equation and the concept of iterative processes are given and their application is shown in the examples. The problem of numerical solution of a number of practical problems consisting of a system of nonlinear equations is considered. There are a number of approximate computational methods for solving systems of nonlinear equations, including Newton's method. Using these methods, a number of specific practical problems were solved, a computational algorithm and a block diagram were developed. An approximate method of finding the true roots of a system of nonlinear equations is given, based on examples, graphs are used in the form of results, and appropriate conclusions are drawn
    Sh Mengliyev, A Xamrayev
    174-182
    44   9
  • The article provides a comparative analysis of turbulence models by numerically simulating a swirling flow inside a rotatable pipe. To solve this problem, the Reynolds averaged non-stationary Navier-Stokes equations in a cylindrical coordinate system were used. To find the Reynolds voltage, the turbulence model was used the most popular semi-empirical turbulence model. Comparison is made between models of different approaches to turbulence SSG / LRR-RSM-w2012 and νt-92. The numerical results obtained on the basis of turbulence models are compared with the well-known experimental results of Reich and Beer (1989)
    Farrux Nazarov, Jonibek Fardayev
    37-41
    31   6
  • Uzbekistan is a country endowed with a variety of medicinal plants with strong potential for therapeutic application, Ferula assefoetida l. is called ferula is one of the most popular medicinal herbs. It is important active ingredient responsible for the biological activity of ferula, through the major activity is anti-inflammatory. This analysis was aimed to determine analysis compound of ferulic acids analysis using high performanceliquid chromatography (HPLC), LC-20 Prominence, Shimadzu, column C-18 250 х 4,6 mm, 5 mcm; acetonitrile: acetic acid: aqua bides as mobile phase, flow rate 1 ml/min and detection at 320 nm. Thus the analytical method using HPLC for ferulic acid were feasible for quantitative analysis. As a result of the research, the content of dry extract was 0,01% of the content of ferulic acid.
    Shakhista Iskandarova , Nilufar Abdukhalilova
    8-10
    28   10
  • Korteveg-de Friz tenglamasi sayoz suvlarning uzun to‘lqinlar nazariyasi va nochiziqli effekt va dispersiya hosil bo’ladigan boshqa fizik sistemalarida uchraydi. Mazkur ishda Korteveg-de Friz tenglamasining simetriyalar gruppalari o‘rganilgan.

    Khurshid Sharipov, Nematillo Abriev, Abror Esanov
    252-254
    5   0
  • “Elcktron ta’lim” ta’lim jarayoniga tczlik bilan kirib kclmoqda. Ushbu maqolada uning yutug’i bilan birga elektron ta’limni joriy etishdagi muammolar taxlil qilinadi. Elektron ta’limni joriy etilishda “yangi pedagogik texnologiya”ni ishlab chiqish zarurati tug’iladi. Quyida “yangi pedagogic texnologiya” ta’rifi va kafolatli pedagogik jarayon loyixasi keltiriladi.

    Abdumanap Abdukarimov, Kamola Sharipova
    242-246
    1   0
  • Ushbu maqolada akademik litseylarning fizika kursida Kvant fizikasi bo‘limini o‘qitishda mikroolam haqida asosiy tushunchalar keltirilgan.

    Komil Sattarkulov
    550-551
    1   1
  • Subjects of the inquiry: 103 patients with rheumatoid arthritis, 20 healthy individuals.
    Aim of the inquiry: To study therapeutic effect of low frequency physical factors on the cytokines and the processes of lipid peroxidation and to confirm scientifically the efficacy of their use based on the their effect on the clinical laboratory findings.
    Methods of investigation: Clinical and laboratory investigations, immunological analyses of the blood scrum cytokine levels and synovial fluid, biochemical examinations of the lipid peroxidation and antioxidant system indicators, phospholipase-A2 activity, nonspecific phosphatases and free oxyprolinc in the blood serum of patients.
    The results achieved and their novelty: There was studied clinical efficacy of ultraphonophoresis with benzketozon during treatment and rehabilitation of the patients with rheumatoid arthritis. It was proved that disbalance between inflammatory and anti-inflammatory cytokines as well as lipid peroxidation activation activity in the erythrocyte membranes and blood scrum destabilized cellular membrane structures, increase in phospholipase-A2 activity and, consequently, stimulating prostaglandines, inflammation mediators, synthesis. There was shown that complex therapy with inclusion of low frequency physical factors, particularly ultraphonophoresis with benzketozon, gave marked positive effect normalizing interrelation ship between inflammatory and anti-inflammatory cytokines reducing activity of phospholipase-A2, lipid peroxidation products and rising the levels of antioxidant system indicators.
    Practical value: There has been shown rationality of inclusion of the physical-pharmacological method ultraphonophoresis with benzketozon into clinical practice. The differential indicators developed for application of low-frequency physical methods of therapy for rehabilitation of the patients with rheumatoid arthritis allow prolongation of the remission, improvement of the patients life quality.
    Degree of embed and economic effectivity: The practical recommendation and guidelines have been applied in the clinical practice of the out-patient special course of arthrological treatment in the Republican Rhcumatological Center, Clinical Hospital N 1, Central Hospital of Zangiota district of Tashkent province. Sphere of usage: Rheumatology, physiotherapy.

    Shakhnoza Rakhimova
    1-24
    0   0
  • Object of the research: the process of teaching physics
    The aim of the research: The periodical law of physics and the proof of the physical education according ot the law.
    Methods of the research: To analyze literature regarding the research; to observe teaching process, conversation with the teacher and a pupil, to observe professional expricnce of school teachers, to prepare questionnaires, to conduct, to work out and analyse statistically the pedagogical experiment.
    Scientific novelty of the research: Considering the periodic education law as a separate subject, the periods of physical education were methodically characterised, the diffcrcnciation was analyzed, the practical outcome of physical pcriodisation was reflected and the technology of governing physical education periodically at secondary schools and learning teaching materials were thoroughly established.
    Practical importance of the research: the periodic technology of teaching physics which is the result of the research - can be widely used in teaching physics at secondary schools; in creation of teaching material; in working out new forms of independent and distance learning and in teachers’ training system. It can also be used in teaching other subjects at secondary schools and in other stages of education.
    Efficiency and the implementation of the project: More than 30 articles, brochures and a monography were published on this dissertation. The results of the research were discussed and analyzed in the scientific conferences in foreign and local teachers and professors conferences and meetings at Bukhara State University and in another educational establishments. (Bukhara - 2000, 2001,
    2002, 2003; Karshi city - 2003, 2004; Guliston city 2002, 2005; Samarkand -
    2003, 2004, Tashkent city 2003, 2005; Termez city 2003, 2004; Namangan city 2005, Ferghana city 2002, 2004). The efficiency of the research at secondary schools has reached 20.8% at average.
    The degree of implementation: The results of the research can be used in teaching physics at secondary schools, in teachers training system, in the creation of text-books and other teaching materials and in condiction research works connected to this matter.

    Siddik Kakhkhorov
    1-36
    0   0
inLibrary — это научная электронная библиотека inConference - научно-практические конференции inScience - Журнал Общество и инновации UACD - Антикоррупционный дайджест Узбекистана UZDA - Ассоциации стоматологов Узбекистана АСТ - Архитектура, строительство, транспорт Open Journal System - Престиж вашего журнала в международных базах данных inDesigner - Разработка сайта - создание сайтов под ключ в веб студии Iqtisodiy taraqqiyot va tahlil - ilmiy elektron jurnali yuridik va jismoniy shaxslarning in-Academy - Innovative Academy RSC MENC LEGIS - Адвокатское бюро SPORT-SCIENCE - Актуальные проблемы спортивной науки GLOTEC - Внедрение цифровых технологий в организации MuviPoisk - Смотрите фильмы онлайн, большая коллекция, новинки кинопроката Megatorg - Доска объявлений Megatorg.net: сайт бесплатных частных объявлений Skinormil - Космецевтика активного действия Pils - Мультибрендовый онлайн шоп METAMED - Фармацевтическая компания с полным спектром услуг Dexaflu - от симптомов гриппа и простуды SMARTY - Увеличение продаж вашей компании ELECARS - Электромобили в Ташкенте, Узбекистане CHINA MOTORS - Купи автомобиль своей мечты! PROKAT24 - Прокат и аренда строительных инструментов