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Бюллетени и Вестники - Библиотека аль-Фараби | Казахский национальный университет имени аль-Фараби

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Толық мәтін

We have calculated a subclass of four non-leptonic two-body weak decays of the double charm baryon ground states Ξcc++. We use the covariant confined quark model previously developed by us to calculate the different helicity amplitudes that describe the dynamics of the transition induced by the Cabibbo-favored effective currents. Radiative decay of double heavy baryons in a relativistic constituent three--quark model including hyperfine mixing //Phys.

Ab initio three-loop calculation of the W-exchange contribution to non-leptonic double-charm baryon decays // Phys. 17 Albertus C., Hernandez E. and Nieves J. Exclusive c→s,d semileptonic decays of doubly heavy cb baryons in the spin-1/2 and spin-3/2 ground states //Phys. 44 Fayyazuddin and Riazuddin, On the relative strength of W exchange and factorization contributions in hadronic decays of charmed baryons // Phys.

Exclusive nonleptonic decays of bottom baryons and charm in a relativistic three-quark model: Evaluation of nonfactorization diagrams // Phys. Semileptonic decays Λ+𝑐𝑐𝑐𝑐→ Λ𝑙𝑙𝑙𝑙+𝜈𝜈𝜈𝜈𝑘𝑘𝑘𝑘(𝑙𝑙𝑙𝑙𝑙𝑙+𝜈 𝜇𝜇) in the covariant quark model and comparison with new measurements of the absolute branching fraction of Belle and BESIII //Phys.

ПЛАЗМА ФИЗИКАСЫ

PLASMA PHYSICS

ФИЗИКА ПЛАЗМЫ

Investigation of the scattering of electrons by ions in the plasma of inertial confinement fusion in a magnetic field. In this paper, the processes of electron-ion scattering in the plasma of inertial confinement fusion in a magnetic field were studied. The proposed model for studying the processes of scattering between charged particles is based on the solution of the equation of motion in a central field taking into account the external magnetic field, as well as the Coulomb logarithm, which is determined using the scattering angle in a pair collision .

We study the influence of taking into account the magnetic field on the scattering angles, the scattering cross section and the Coulomb logarithm. From the obtained results, it is established that the consideration of the magnetic field caused a non-monotonic change of the scattering angle and a reduction of the scattering cross section for weak particle interactions. It is also established that at large values ​​of the interaction parameter β, the magnetic field does not affect the value of Coulomb's logarithm.

Thus, the obtained results allow us to study the effect of taking into account the magnetic field on the processes of electron scattering on an ion in the approximation of pair collisions in an external constant magnetic field in a dense plasma. Direct measurement of kilo-tesla-level magnetic field generated with laser-driven capacitor-coil target by proton deflectometry // Appl.

КОНДЕНСИРЛЕНГЕН КҮЙ ФИЗИКАСЫ ЖӘНЕ МАТЕРИАЛТАНУ ПРОБЛЕМАЛАРЫ

НАНОҒЫЛЫМ

CONDENSED MATTER PHYSICS AND MATERIALS SCIENCE PROBLEMS

NANOSCIENCE

ФИЗИКА КОНДЕНСИРОВАННОГО СОСТОЯ- НИЯ И ПРОБЛЕМЫ МАТЕРИАЛОВЕДЕНИЯ

НАНОНАУКА

The gas phase pressure of the mixture during cryocondensation was maintained at P = 105 Torr. Key words: Rotary compressor, calculation method, mathematical modeling, mass flow rate of the working substance, regrinding of the compressed medium. For the design of such samples, the development of the most adequate compressor model is required.

Finally, extend the scope of the general sliding compressor workflow model and improve its relevance. In fact, the mathematical model reflects the successive changing of the states of the compressed medium and is a set of relations that connect the characteristics. In such cases, the mathematical model of the workflow is supplemented with a mathematical model of heat transfer.

And it shows the fundamental components of the integrity of the mathematical model for this field of knowledge. Due to a generalized analysis, equations were identified based on the description of work processes with a variable mass of the working fluid [19-21]. Along with this, we considered the issue of the output of the working medium through the removable slot.

The coefficient Kp takes into account the reduction in consumption due to losses during the movement of the working fluid through the cracks. Along the contact line of the fin surfaces of the spirals (type b). The analysis of the literature on the determination of the flow rate in rotary compressors, which are closer in the type of slots (see Table 1) and the principle of operation of moving compressors, showed that this issue is more fully summarized in the work [26] .

Analysis of dynamic characteristics of oil-free rotary hydrogen recirculating pump based on multi-body dynamics simulation //Int. Hybrid modeling and efficiency analysis of rotary compressor used in micro compressed air energy storage system // Application. An increase in the annealing temperature to 800°C leads to the complete transformation of the Nd2O3 phase.

This study was funded by the Ministry of Education and Science of the Republic of Kazakhstan (grant AP09259184). Based on the physical analysis of the processes occurring in pulsed plasma accelerators, pos. From the theoretical estimate of the inductance of the installation, its most probable value is calculated.

Structural-phase state of the surface layer of low-carbon steel after electrolytic-plasma modification.

Table 1 – Type of slot in a scroll compressor
Table 1 – Type of slot in a scroll compressor

HRC40 HRC45

Surface hardening of the aluminum alloys Al3 by electrolytic-plasma treatment //News of the National Academy of Sciences of the Republic of Kazakhstan. Laboratory installation for electrolytic-plasma treatment of steel //NEWS from the National Academy of Sciences of the Republic of Kazakhstan. Functions of the distribution of events with multiple of secondary particles depending on the collision energy.

To search for signals of the phase transition of matter from the hadronic state to the quarkgluon plasma, interactions with extreme characteristics are studied. Experimental data on inelastic interactions with the nuclei of the NIKFI BR2 emulsion obtained at the SPS at CERN and at the Synchrophasotron at JINR. To take into account fluctuations in the initial conditions of the nuclear-nuclear interaction, the events are divided into central and peripheral.

Представлен сравнительный анализ средней множественности тяжелых и легких ядер фотоэмульсии. Были использованы следующие экспериментальные данные: 837 неупругих взаимодействий S+Em 200 АГеВ [24-26] с ядрами эмульсии НИКФИБР-2, полученные на SPS в ЦЕРН, и 924 неупругих взаимодействия S+Em 3,7 АГеВ с ядрами эмульсии НИКФИБР-2, полученные в Синхрофазотрон в ОИЯИ (Дубна, Россия) [27,28]. Для взаимодействий S+Em 200 АГеВ коэффициент увеличения множественности зависит от степени перекрытия ядер, для центральных взаимодействий Cm = 8,4 и для периферических взаимодействий Cm = 4,8.

Characterization of the initial state and QGP medium from a combined Bayesian analysis of LHC data at 2.76 and 5.02 TeV // Nuclear physics A. A study of projectile helium fragments in high-energy nucleus-nucleus interactions //Canadian Journal of Physics. Event-by-event analysis of maximum pseudo-velocity gap fluctuation in high-energy nuclear-nuclear collisions // EPL.

Sensitivity of multiplicity fluctuations to velocity in high-energy core-nucleus interactions //Ukrainian Journal of Physics. Study of the peculiarities of multiparticle production via event-by-event analysis in asymmetric core-nucleus interactions// EPJ Web of Conferences. Initial state fluctuations and complete destruction of the projectile nucleus in interactions of asymmetric nuclei at high energies //Knowledge E Energy and physics.

БЕЙСЫЗЫҚ ФИЗИКА

РАДИОФИЗИЗИКА

NONLINEAR PHYSICS

RADIOPHYSICS

НЕЛИНЕЙНАЯ ФИЗИКА

РАДИОФИЗИКА

И X-ДИАПАЗОННАЯ ПАТЧ-АНТЕННА ДЛЯ НАНОСПУТНИКОВ CUBESAT

В данной работе мы рассмотрели модель патч-антенны S- и X-диапазона для наноспутников CubeSat в области дистанционного зондирования Земли (ДЗЗ). За последние 10-15 лет крупными космическими агентствами, университетами и компаниями активно разрабатываются и успешно эксплуатируются низкоорбитальные малые космические аппараты (LSV) и наноспутники формата CubeSat (объемом 1 литр) [1-4]. Работа выполнена при поддержке Министерства образования и науки РК по гранту AP09057984 «Разработка и создание антенн S- и X-диапазона для наноспутников CubeSat для дистанционного зондирования Земли».

High gain circularly polarized S-band antenna for nanosatellite //International Journal of Applied Electromagnetics and Mechanics.

Сурет

Table 1 – Type of slot in a scroll compressor
Figure 1 – SEM images of the studied nanocomposites: a) Pristine sample; b) 600°C; c) 800°C; d) 1000°C
Figure 2 – X-ray diffraction patterns of the studied nanocomposites depending on annealing temperature
Figure 3 shows the results of changes in the  phase  diagram  of  nanocomposites  calculated  on  the  basis  of  the  obtained  X-ray  data
+2

Ақпарат көздері

СӘЙКЕС КЕЛЕТІН ҚҰЖАТТАР

Amanzholov East Kazakhstan University, Kazakhstan, Ust-Kamenogorsk ∗e-mail: dinara_2205@mail.ru ANALYSIS OF A FINITE VOLUME ELEMENT SCHEME FOR SOLVING THE MODEL TWO-PHASE