检索结果-内蒙古大学图书馆

Numerical approach toward ternary hybrid nanofluid flow with nonlinear heat source-sink and fourier heat flux model passing through a disk

引用

International Journal of Thermofluids 2023年 18卷

作者： Alqawasmi, Khaled Alharbi, Khalid Abdulkhaliq M. Farooq, Umar Noreen, Sobia Imran, Muhammad Akgül, Ali Kanan, Mohammad Asad, Jihad Cyber Security Department Zarqa University Jordan Mechanical Engineering Department College of Engineering Umm Al-Qura University Makkah24382 Saudi Arabia Department of Mathematics Government College University Faisalabad 38000 Pakistan School of Mathematics Minhaj University Lahore Pakistan Department of Chemistry Government College Women University Faisalabad 38000 Pakistan Department of Computer Science and Mathematics Lebanese American University Beirut Lebanon Siirt University Art and Science Faculty Department of Mathematics Siirt 56100 Turkey Near East University Mathematics Research Center Department of Mathematics Near East Boulevard PC: 99138 Nicosia /Mersin 10 Turkey Jeddah College of Engineering University of Business and Technology Jeddah21448 Saudi Arabia Dep. of Physics Faculty of Applied Science Palestine Technical University- Kadoorie TulkarmP 305 Palestine

The use of a ternary hybrid nanofluid, a new form of nanofluid, can improve heat movement. The current research employs a two-dimensional steady model to investigate nonlinear thermal radiation via ternary hybrid nanofluid flow across a revolving disc. The study of manganese zinc ferrite, copper, and silver nanocomposite base hybrid nanofluid across a spinning disc is gaining traction in invention and research due to its broad range of applications. To derive dimensionless forms of regulating paired nonlinear partial differential equations, a collection of pertinent similarity transformations is used. Based on the shooting method, the modified collection of ODEs is then analytically solved by bvp4c via the computational tool MATLAB. Furthermore, as the magnetic parameter values are reduced, the fluid velocity declines while the fluid temperature grows over a spinning disc. For larger levels, the temperature of the distribution and the radiant heat component rises. The ternary composite nanofluid has the largest impact on the surface. Furthermore, compared to the hybrid and based nanofluids, the heat generation rate of the ternary nanofluid combination is the higher transmission. The significance of Ag nanoparticles in the food industry is because of their anti-bacterial and anti-fungicidal properties, silver (Ag) is widely used in everyday products such as fabrics, pastes, polymers, food, and detergents. Manganese zinc ferrites (MnZnFe2O4) have recently piqued the interest of material science researchers due to their broad variety of applications. They are extensively used in energy storage devices, catalysts, adsorbents, sensing and imaging, therapeutic action, and other applications. © 2023 The Author(s)

关键词： Numerical methods

来源：评论

学校读者我要写书评

暂无评论

Confident entanglement detection via the separable numerical range

引用

Physical Review A 2021年第4期104卷 042420-042420页

作者： Timo Simnacher Jakub Czartowski Konrad Szymański Karol Życzkowski Naturwissenschaftlich-Technische Fakultät Universität Siegen Walter-Flex-Strasse 3 D-57068 Siegen Germany Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University ul. Łojasiewicza 11 30-348 Kraków Poland Center for Theoretical Physics Polish Academy of Sciences al. Lotników 32/46 02-668 Warszawa Poland

We investigate the joint (separable) numerical range of multiple measurements, i.e., the regions of expectation values accessible with (separable) quantum states for given observables. This not only enables efficient entanglement detection, but also sheds light on the geometry of the set of quantum states. More precisely, in an experiment, if the confidence region for the obtained data and the separable numerical range are disjoint, entanglement is reliably detected. Generically, the success of such an experiment is more likely the smaller the separable numerical range is, compared to the standard numerical range of the observables measured. We quantify this relation using the ratio between these two volumes and show that it cannot be arbitrarily small, giving analytical bounds for any number of particles, local dimensions, as well as number of measurements. Moreover, we explicitly compute the volume of separable and standard numerical range for two locally traceless two-qubit product observables, which are of particular interest as they are easier to measure in practice. Furthermore, we consider typical volume ratios for generic observables and extreme instances.

关键词： Entanglement detection Quantum correlations in quantum information Quantum entanglement

来源：评论

学校读者我要写书评

暂无评论

Estimation of critical temperature of high-temperature superconductors from AC susceptibility measurements using a pair of Neural Networks

arXiv

引用

arXiv 2020年

作者： Kowalik, Marcin Kowalczyk, Michal Michalik, Jan M. Giebultowski, Marek Zalecki, Ryszard Niewolski, Janusz Tokarz, Waldemar Department of Solid State Physics Faculty of Physics and Applied Computer Science AGH University of Science and Technology A. Mickiewicza 30 Av. Cracow30-059 Poland

This paper demonstrates the method of estimation of critical temperature Tc value of high-temperature superconductors from the dispersive part of AC susceptibility measurement using a pair of neural networks. Copyrigh... 详细信息

关键词： Machine learning

来源：评论

学校读者我要写书评

暂无评论

Logic Gates Based on Synthetic Antiferromagnetic Bilayer Skyrmions

引用

Physical Review applied 2021年第1期16卷 014040-014040页

作者： Mouad Fattouhi Kai Yu Mak Yan Zhou Xichao Zhang Xiaoxi Liu Mohamed El Hafidi Department of Applied Physics University of Salamanca 37008 Salamanca Spain School of Science and Engineering the Chinese University of Hong Kong Shenzhen Guangdong 518172 China Department of Electrical and Computer Engineering Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan Condensed Matter Physics Laboratory Hassan II University of Casablanca Faculty of Sciences Ben M’Sik 7955 Casablanca Morocco

Technologies based on magnetic skyrmions, such as computational devices that can operate at high speed or with low energy consumption, have been proposed by many researchers. Recently, synthetic antiferromagnetic (SAF) structures have been proposed to increase the stability and mobility of skyrmions by reducing or eliminating the skyrmion Hall effect. Here, we numerically study the current-induced dynamics of skyrmions on SAF bilayer structures. We demonstrate the effective control and manipulation of SAF skyrmions, including directional displacement and alignment. Furthermore, we design SAF-skyrmion-based logic gates, such as the and, or, xor, and not gates. Our design provides guidance for future development of spintronic computing devices that use topological nanoscale spin textures as information carriers.

关键词： Hall effect Skyrmions Antiferromagnets Devices Magnetic multilayers Nanostructures Landau-Lifschitz-Gilbert equation Micromagnetic modeling

来源：评论

学校读者我要写书评

暂无评论

Tunable phonon-driven magnon-magnon entanglement at room temperature

arXiv

引用

arXiv 2022年

作者： Liu, Yuefei Bergman, Anders Bagrov, Andrey Delin, Anna Thonig, Danny Pereiro, Manuel Eriksson, Olle Streib, Simon Sjöqvist, Erik Azimi-Mousolou, Vahid Department of Applied Physics School of Engineering Sciences KTH Royal Institute of Technology AlbaNova University Center StockholmSE-10691 Sweden Department of Physics and Astronomy Uppsala University Box 516 UppsalaSE-751 20 Sweden Institute for Molecules and Materials Radboud University Heyendaalseweg 135 Nijmegen6525AJ Netherlands KTH Royal Institute of Technology StockholmSE-10044 Sweden School of Science and Technology Örebro University ÖrebroSE-701 82 Sweden Department of Applied Mathematics and Computer Science Faculty of Mathematics and Statistics University of Isfahan Isfahan81746-73441 Iran

We report the existence of entangled steady-states in bipartite quantum magnonic systems at elevated temperatures. We consider dissipative dynamics of two magnon modes in a bipartite antiferromagnet, subjected to interaction with a phonon mode and an external rotating magnetic field. To quantify the bipartite magnon-magnon entanglement, we use entanglement negativity and compute its dependence on temperature and magnetic field. We provide evidence that the coupling between magnon and phonon modes is necessary for the entanglement, and that, for any given phonon frequency and magnon-phonon coupling rate, there are always ranges of the magnetic field amplitudes and frequencies for which magnon-magnon entanglement persists at room temperature. Copyright © 2022, The Authors. All rights reserved.

关键词： Room temperature

来源：评论

学校读者我要写书评

暂无评论

The azimuthal correlation between the leading jet and the scattered lepton in deep inelastic scattering at HERA

arXiv

引用

arXiv 2024年

作者： Abt, I. Aggarwal, R. Aushev, V. Behnke, O. Bertolin, A. Bloch, I. Brock, I. Brook, N.H. Brugnera, R. Bruni, A. Bussey, P.J. Caldwell, A. Catterall, C.D. Chwastowski, J. Ciborowski, J. Ciesielski, R. Cooper-Sarkar, A.M. Corradi, M. Dementiev, R.K. Dusini, S. Ferrando, J. Foster, B. Gallo, E. Gangadharan, D. Garfagnini, A. Geiser, A. Grzelak, G. Gwenlan, C. Hochman, D. Jomhari, N.Z. Kadenko, I. Karshon, U. Kaur, P. Klanner, R. Klein, U. Korzhavina, I.A. Kovalchuk, N. Kuze, M. Levchenko, B.B. Levy, A. Löhr, B. Lohrmann, E. Longhin, A. Lorkowski, F. Lunghi, E. Makarenko, I. Malka, J. Masciocchi, S. Nagano, K. Nam, J.D. Onishchuk, Yu. Paul, E. Pidhurskyi, I. Polini, A. Przybycień, M. Quintero, A. Ruspa, M. Schneekloth, U. Schörner-Sadenius, T. Selyuzhenkov, I. Shchedrolosiev, M. Shcheglova, L.M. Sherrill, N. Skillicorn, I.O. Slomiński, W. Solano, A. Stanco, L. Stefaniuk, N. Surrow, B. Tokushuku, K. Turkot, O. Tymieniecka, T. Verbytskyi, A. Abdullah, W.A.T. Wan Wichmann, K. Wing, M. Yamada, S. Yamazaki, Y. Żarnecki, A.F. Zenaiev, O. Max-Planck-Institut für Physik München Germany DST-Inspire Faculty Department of Technology SPPU India Department of Nuclear Physics National Taras Shevchenko University of Kyiv Kyiv Ukraine Deutsches Elektronen-Synchrotron DESY Hamburg Germany INFN Padova Padova Italy Deutsches Elektronen-Synchrotron DESY Zeuthen Germany Physikalisches Institut der Universität Bonn Bonn Germany Physics and Astronomy Department University College London London United Kingdom Dipartimento di Fisica e Astronomia dell’ Università INFN Padova Italy INFN Bologna Bologna Italy School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Department of Physics York University ONM3J 1P3 Canada The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Krakow Poland Faculty of Physics University of Warsaw Warsaw Poland Department of Physics University of Oxford Oxford United Kingdom DESY Germany Physics Department Lancaster University Lancaster United Kingdom Hamburg University Institute of Experimental Physics Hamburg Germany Physikalisches Institut the University of Heidelberg Heidelberg Germany Department of Particle Physics and Astrophysics Weizmann Institute Rehovot Israel Sant Longowal Institute of Engineering and Technology Punjab Longowal India Department of Physics Tokyo Institute of Technology Tokyo Japan Raymond and Beverly Sackler Faculty of Exact Sciences School of Physics Tel Aviv University Tel Aviv Israel Physik-Institut University of Zurich Zurich Switzerland Department of Physics Indiana University Bloomington BloomingtonIN47405 United States GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt Germany Institute of Particle and Nuclear Studies KEK Tsukuba Japan Department of Physics Temple University PhiladelphiaPA19122 United States Institut für Kernphysik Goethe Universität Frankfurt am Main Germany AGH University of Science and Technology Faculty of Physics and Applied Computer Science K

The azimuthal correlation angle, ∆, between the scattered lepton and the leading jet in deep inelastic e±p scattering at HERA has been studied using data collected with the ZEUS detector at a centre-of-mass energy of √s = 318 GeV, corresponding to an integrated luminosity of 326 pb−1. A measurement of jet cross sections in the laboratory frame was made in a fiducial region corresponding to photon virtuality 10 GeV2 2 2, inelasticity 0.04 e > 10 GeV, lepton polar angle 140◦ e ◦, jet transverse momentum 2.5 GeV T,jet jet T algorithm with the radius parameter R = 1. The leading jet in an event is defined as the jet that carries the highest pT,jet. Differential cross sections, dσ/d∆, were measured as a function of the azimuthal correlation angle in various ranges of leading-jet transverse momentum, photon virtuality and jet multiplicity. Perturbative calculations at O(αs2) accuracy successfully describe the data within the fiducial region, although a lower level of agreement is observed near ∆ → π for events with high jet multiplicity, due to limitations of the perturbative approach in describing soft phenomena in QCD. The data are equally well described by Monte Carlo predictions that supplement leading-order matrix elements with parton showering. © 2024, CC BY.

关键词： Inelastic scattering

来源：评论

学校读者我要写书评

暂无评论

CONSTRUCTIVE CONTROLLABILITY FOR INCOMPRESSIBLE VECTOR FIELDS

arXiv

引用

arXiv 2022年

作者： Kryzhevich, Sergey G. Stepanov, Eugene Institute of Applied Mathematics Faculty of Applied Physics and Mathematics Gdańsk University of Technology Gdańsk80-233 Poland BioTechMed Center Gdańsk University of Technology Faculty of Mathematics and Computer Science St. Petersburg State University 13B Universitetskaya Emb. St. Petersburg199034 Russia St.Petersburg Branch of the Steklov Mathematical Institute of the Russian Academy of Sciences Fontanka 27 St. Petersburg191023 Russia Higher School of Economics Faculty of Mathematics Usacheva str. 6 Moscow119048 Russia Department of Mathematical Physics Faculty of Mathematics and Mechanics St. Petersburg State University Universitetskij pr. 28 Old Peterhof St. Petersburg198504 Russia

We give a constructive proof of a global controllability result for an autonomous system of ODEs guided by bounded locally Lipschitz and divergence free (i.e. incompressible) vector field, when the phase space is the whole Euclidean space and the vector field satisfies so-called vanishing mean drift condition. For the case when the ODE is defined over some smooth compact connected Riemannian manifold, we significantly strengthen the assertion of the known controllability theorem in absence of nonholonomic constraints by proving that one can find a control steering the state vector from one given point to another by using the observations of only the state vector, i.e., in other words, by changing slightly the vector field, and such a change can be made small not only in uniform, but also in Lipschitz (i.e. C1) *** Codes 37C10, 37C40, 34H05 © 2022, CC BY.

关键词： Ordinary differential equations

来源：评论

学校读者我要写书评

暂无评论

Constraining nucleon effective masses with flow and stopping observables from the SπRIT experiment

arXiv

引用

arXiv 2023年

作者： Tsang, C.Y. Kurata-Nishimura, M. Tsang, M.B. Lynch, W.G. Zhang, Y.X. Barney, J. Estee, J. Jhang, G. Wang, R. Kaneko, M. Lee, J.W. Isobe, T. Murakami, T. Ahn, D.S. Atar, L. Aumann, T. Baba, H. Boretzky, K. Brzychczyk, J. Cerizza, G. Chiga, N. Fukuda, N. Gasparic, I. Hong, B. Horvat, A. Ieki, K. Inabe, N. Kim, Y.J. Kobayashi, T. Kondo, Y. Lasko, P. Lee, H.S. Leifels, Y. Lukasik, J. Manfredi, J. McIntosh, A.B. Morfouace, P. Nakamura, T. Nakatsuka, N. Nishimura, S. Otsu, H. Pawlowski, P. Pelczar, K. Rossi, D. Sakurai, H. Santamaria, C. Sato, H. Scheit, H. Shane, R. Shimizu, Y. Simon, H. Snoch, A. Sochocka, A. Sumikama, T. Suzuki, H. Suzuki, D. Takeda, H. Tangwancharoen, S. Törnqvist, H. Togano, Y. Xiao, Z.G. Yennello, S.J. Zhang, Y. National Superconducting Cyclotron Laboratory Michigan State University East LansingMI48824 United States Department of Physics Michigan State University East LansingMI48824 United States Kent State University 800 E Summit St KentOH44240 United States RIKEN Nishina Center Hirosawa 2-1 Wako Saitama351-0198 Japan China Institute of Atomic Energy Beijing102413 China Department of Physics Kyoto University Kita-shirakawa Kyoto606-8502 Japan Department of Physics Korea University Seoul02841 Korea Republic of Institut für Kernphysik Technische Universität Darmstadt DarmstadtD-64289 Germany GSI Helmholtzzentrum für Schwerionenforschung Planckstrasse 1 Darmstadt64291 Germany Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University Kraków Poland Division of Experimental Physics Rudjer Boskovic Institute Zagreb Croatia Department of Physics Rikkyo University Nishi-Ikebukuro 3-34-1 Tokyo171-8501 Japan Rare Isotope Science Project Institute for Basic Science Daejeon34047 Korea Republic of Department of Physics Tohoku University Sendai980-8578 Japan Department of Physics Tokyo Institute of Technology Tokyo152-8551 Japan Institute of Nuclear Physics PAN ul. Radzikowskiego 152 Kraków31-342 Poland Cyclotron Institute Texas A&M University College StationTX77843 United States Nikhef National Institute for Subatomic Physics Amsterdam Netherlands Department of Physics Faculty of Science King Mongkut's University of Technology Thonburi Bangkok Thailand Faculty of Science King Mongkut's University of Technology Thonburi Bangkok Thailand Department of Physics Tsinghua University Beijing100084 China Department of Chemistry Texas A&M University College StationTX77843 United States

Properties of the nuclear equation of state (EoS) can be probed by measuring the dynamical properties of nucleus-nucleus collisions. In this study, we present the directed flow (v1), elliptic flow (v2) and stopping (VarXZ) measured in fixed target Sn + Sn collisions at 270AMeV with the SπRIT Time Projection Chamber. We perform Bayesian analyses in which EoS parameters are varied simultaneously within the Improved Quantum Molecular Dynamics-Skyrme (ImQMDSky) transport code to obtain a multivariate correlated constraint. The varied parameters include symmetry energy, S0, and slope of the symmetry energy, L, at saturation density, isoscalar effective mass, m∗s /mN, isovector effective mass, m∗v /mN and the in-medium cross-section enhancement factor η. We find that the flow and VarXZ observables are sensitive to the splitting of proton and neutron effective masses and the in-medium cross-section. Comparisons of ImQMD-Sky predictions to the SπRIT data suggest a narrow range of preferred values for m∗s /mN, m∗v/mN and η. © 2023, CC BY.

关键词： Preferred numbers

来源：评论

学校读者我要写书评

暂无评论

Positivity and convexity in incomplete cooperative games

arXiv

引用

arXiv 2020年

作者： Černý, Martin Bok, Jan Hartman, David Hladík, Milan Department of Applied Mathematics Faculty of Mathematics and Physics Charles University Prague Czech Republic Computer Science Institute Faculty of Mathematics and Physics Charles University Prague Czech Republic Institute of Computer Science The Czech Academy of Sciences Prague Czech Republic

Incomplete cooperative games generalise the classical model of cooperative games by omitting the values of some of the coalitions. This allows to incorporate uncertainty into the model and study the underlying games as well as possible payoff distribution based only on the partial information. In this paper we perform a systematic study of incomplete games, focusing on two important classes of cooperative games: positive and convex games. Regarding positivity, we generalise previous results for a special class of minimal incomplete games to general setting. We characterise non-extendability to a positive game by the existence of a certificate and provide a description of the set of positive extensions using its extreme games. The results are then used to obtain explicit formulas for several classes of incomplete games with special structures. The second part deals with convexity. We begin with considering the case of non-negative minimal incomplete games. Then we survey existing results in the related theory of set functions, namely providing context to the problem of completing partial functions. We provide a characterisation of extendability and a full description of the set of symmetric convex extensions. The set serves as an approximation of the set of convex extensions. Finally, we outline an entirely new perspective on a connection between incomplete cooperative games and cooperative interval *** Codes 91A12 Copyright © 2020, The Authors. All rights reserved.

关键词： Game theory

来源：评论

学校读者我要写书评

暂无评论

Performance evaluation of the modular J-PET detector in conventional PET imaging

Performance evaluation of the modular J-PET detector in conv...

引用

IEEE Symposium on Nuclear science (NSS/MIC)

作者： M. Das R. Bayerlein S. Parzych S. Sharma R. D. Badawi E. Y. Beyene E. Czerwiński A. Hubalewska-Dydejczyk T. Kaplanoglu G. Korcyl W. Krzemien W. Mryka S. Niedźwiecki M. Opalińska M. Rädler M. Skurzok B. A Spencer P. Tanty K. Tayefi Ardebili P. Moskal E.Ł. Stepien Doctoral School of Exact and Natural Sciences Jagiellonian University M. Smoluchowski Institute of Physics S. Łojasiewicza 11 30-348 Krakow Poland Department of Biomedical Engineering University of California Davis Sacramento California United States of America Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University Krakow Poland Centre for Theranostics Jagiellonian University Jagiellonian University Kopernika 40 31-501 Krakow Poland Department of Radiology University of California Davis Sacramento California United States of America Chair and Department of Endocrinology Jagiellonian University Medical College Krakow Poland High Energy Department National Centre for Nuclear Research Otwock Swierk Poland

ISBN: (数字)9798350388152

ISBN: (纸本)9798350388169

The utilization of organic scintillator strips in the construction of J-PET represents a remarkable departure from the conventional PET methodology that relies on inorganic crystal scintillators [1, 2]. This innovative approach not only holds the potential for cost-effectiveness but also facilitates the development of stand-alone detection modules, making PET imaging accessible to non-specialized laboratories [3]. The J-PET scanner, recently commissioned for research imaging on clinical patients at the University Hospital in Krakow, has undergone rigorous evaluation. This work is based on the study in which a single-bed position scan was performed on patients injected with [$\left.{ }^{68} \mathrm{Ga}\right]$-DOTA-TATE. This study evaluates the performance of human imaging in J-PET with particular attention to incorporating various corrections, including attenuation, normalization, random and scatter corrections. Attenuation correction was applied using the kVp-dependent transformation [4]. Normalization corrections were calculated using the component-based approach [5]. Random coincidences were corrected using the delayed time window method [6]. A Monte Carlo-based scatter correction (SC) method was implemented using SimSET to simulate the scatter contribution and calculate the SC factors in between each OSEM iteration of the image reconstruction [7]. In this contribution, the reconstructed images of patients scanned with the JPET, the first scanner based on plastic scintillators, and supplemented with the necessary corrections, will be presented.

关键词： Performance evaluation Strips Microwave integrated circuits Scintillators Monte Carlo methods Semiconductor detectors Attenuation

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：