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Numerical Investigation of the Pulsatile Flow of Viscous Fluid in Constricted Wall Channel with Thermal Radiation

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Advances in Applied mathematics and Mechanics 2023年第4期15卷 1001-1022页

作者： Amjad Ali Zainab Bukhari Hamayun Farooq Zaheer Abbas Centre for Advanced Studies in pure and Applied mathematics(CASPAM) Bahauddin Zakariya UniversityMultan 60800Pakistan department of mathematics Islamia University of BahawalpurBahawalpur 63100Pakistan

The main theme of the current article is to investigate the heat transfer in the pulsatile flow of an electrically conducting viscous fluid in a constricted channel under the effect of the magnetic field and thermal *** unsteady governing equations simplified for low conducting fluids are solved numerically by finite difference method using stream-vorticity function *** influence of the flow parameters such as the Hartmann number(magnetic parameter),Strouhal number(flow pulsation parameter),Prandtl number,and radiation parameter is studied on the relevant flow *** influence of different emerging parameters on the skin friction coefficient and Nusselt number are examined,as *** general,the profiles are observed to exhibit a relatively more regular pattern upstream of the construction than that downstream of the constriction.

关键词： Constricted channel pulsatileflow thermal radiation magneticﬁeld Strouhal number Prandtl number

Computer Methodologies for the Comparison of Some Efficient Derivative FreeSimultaneous Iterative Methods for Finding Roots of Non-Linear Equations

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Computers, Materials & Continua 2021年第1期66卷 275-290页

作者： Yuming Chu Naila Rafiq Mudassir Shams Saima Akram Nazir Ahmad Mir Humaira Kalsoom department of mathematics Huzhou UniversityHuzhou313000China department of mathematics National University of Modern LanguagesIslamabadPakistan department of mathematics and Statistics Riphah International University I-14Islamabad44000Pakistan Center for Advanced Studies in pure and Applied mathematics Bahauddin Zakariya university MultanPakistan School of Mathematical Sciences Zhejiang UniversityHanghou310027China

In this article,we construct the most powerful family of simultaneous iterative method with global convergence behavior among all the existing methods in literature for finding all roots of non-linear *** analysis proved that the order of convergence of the family of derivative free simultaneous iterative method is *** main aim is to check out the most regularly used simultaneous iterative methods for finding all roots of non-linear equations by studying their dynamical planes,numerical experiments and CPU *** planes of iterative methods are drawn by using MATLAB for the comparison of global convergence properties of simultaneous iterative *** behavior of the higher order simultaneous iterative methods are also illustrated by residual graph obtained from some numerical test *** test examples,dynamical behavior and computational efficiency are provided to present the performance and dominant efficiency of the newly constructed derivative free family of simultaneous iterative method over existing higher order simultaneous methods in literature.

关键词： Non-linear equation iterative method simultaneous method basins of attractions computational efficiency

On Skew Triangular Matrix Rings

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Algebra Colloquium 2015年第2期22卷 271-280页

作者： M. Habibi A. Moussavi A. Alhevaz department of pure mathematics Faculty of Mathematical Sciences Tarbiat Modares University P.O. Box 14115-134 Tehran Iran

Let R be a ring with an endomorphism a. We show that the clean property and various Armendariz-type properties of R are inherited by the skew matrix rings S（R, n, σ） and T（R, n,σ）. They allow the construction of rings with a non-zero nilpotent ideal of arbitrary index of nilpotency which inherit various interesting properties of rings.

关键词： quasi-Armendariz ring clean ring triangular matrix ring

Branched module-modified SN38 prodrug nanoassemblies for improved colorectal cancer therapy:Effectively balance efficacy and safety

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Nano Research 2025年第1期18卷 572-585页

作者： Qing Wang Shiyi Zuo Shufang Zheng Cuiyun Liu Yaqiao Li Jiayu Guo Danping Wang Shuo Wang Wenjing Wang Bowen Zhang Minglong Huang Xianbao Shi Jin Sun Zhonggui He Bingjun Sun department of Pharmaceutics Wuya College of InnovationShenyang Pharmaceutical UniversityShenyang 110016China Joint International Research Laboratory of Intelligent Drug Delivery Systems Ministry of EducationShenyang Pharmaceutical UniversityShenyang 110016China School of Chemical Engineering The University of AdelaideAdelaideSA 5005Australia department of Pharmacy The First Affiliated Hospital of Jinzhou Medical UniversityJinzhou 121001China

The clinical utility of irinotecan is restricted by individual variability in carboxylesterase *** administration of its active metabolite,7-ethyl-10-hydroxycamptothecin(SN38),presents an appealing alternative due to its potent anti-tumor ***,the undesirable properties of SN38,such as poor water solubility and nontarget toxicity,present significant hurdles to its clinical *** nanoassemblies based on modular design strategy show promise in overcoming these challenges by enhancing drug delivery and selective *** modular design,the modification module plays a crucial role in improving the self-assembly capability of *** current studies mainly focus on using straight aliphatic chains for prodrug design,branched aliphatic chains emerge as superior alternatives warranting further *** this study,we selected 2-heptylundecanol(BAlc18)as modification module to construct an SN38 *** exquisite design,SN38-SS-BAlc18 NPs integrated prominent properties in selfassembly capability,specific activation and biocompatibility,resolving the challenges of irinotecan and SN38,ultimately demonstrating excellent anti-tumor *** exploration enriched the design theory of prodrug nanoassemblies that can effectively balance safety and colorectal anti-tumor efficacy.

关键词： irinotecan SN38 prodrug nanoassemblies disulfide bonds branched aliphatic chains

On Radicals of Skew Inverse Laurent Series Rings

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Algebra Colloquium 2016年第2期23卷 335-346页

作者： A. Moussavi department of pure mathematics Faculty of Mathematical Sciences Tarbiat Modares University P.O. Box 14115-134 Tehran Iran

Let R be a ring and a an automorphism of R. Amitsur proved that the Jacobson radical J（R[x]） of the polynomial ring R[x] is the polynomial ring over the nil ideal J（R[x]）∩R. Following Amitsur, it is shown that when R is an Armendaxiz ring of skew inverse Laurent series type and S is any one of the ring extensions R[x; α], R[x,x^-1;α], R[[x^-1;α]] and R（（x^-1; α））, then （S） = （R）S = Nil（S）, （S） ∩ R = Nil（R）, where is a radical in a class of radicals which includes the Wedderburn, lower nil, Levitzky and upper nil radicals.

关键词： skew inverse Laurent series ring nil radical Jacobson radical

On Annihilator Ideals of Pseudo-differential Operator Rings

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Algebra Colloquium 2015年第4期22卷 607-620页

作者： R. Manaviyat A. Moussavi department of pure mathematics Faculty of Mathematical Sciences Tarbiat Modares University P.O. Box 14115-134 Tehran Iran

Let R be a ring with a derivation 5 and R（（x-1;5）） denote the pseudo- differential operator ring over R. We study the relations between the set of annihilators in R and the set of annihilators in R（（x-1; 5））. Among applications, it is shown that for an Armendariz ring R of pseudo-differential operator type, the ring R（（x-1; 5）） is Baer （resp., quasi-Baer, PP, right zip） if and only if R is a Baer （resp., quasi-Baer, PP, right zip） ring. For a 5-weakly rigid ring R, R（（x-1;5）） is a left p.q.-Baer ring if and only if R is left p.q.-Baer and every countable subset of left semicentral idempotents of R has a generalized countable join in R.

关键词： pseudo-differential operator ring annihilator ideal Baer ring quasi-Baerring Armendariz-like condition

Evolutionary approaches for supply chain optimisation Part I:single and two-component supply chains

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International Journal of Intelligent Computing and Cybernetics 2012年第4期5卷 444-472页

作者： Maksud Ibrahimov Arvind Mohais Sven Schellenberg Zbigniew Michalewicz department of Computer Science University of AdelaideAdelaideAustralia SolveIT Software AdelaideAustralia university of adelaide AdelaideAustralia

Purpose–The purpose of this paper and its companion(Part II:multi-silo supply chains)is to investigate methods to tackle complexities,constraints(including time-varying constraints)and other *** tis part,the paper aims to devote attention to single silo and two-silo supply *** also aims to discuss three *** first model is based on the winebottling real-world system and exposes complexities of a single operational component of the supply *** second model extends it to two components:production and *** last system is a real-world implementation of the two-component supply ***/methodology/approach–Evolutionary approach is proposed for a single component *** two-component experimental supply chain is addressed by the algorithm based on cooperative *** final problem of steel sheet production is tackled with the evolutionary ***–The proposed systems produce solutions better than solutions proposed by human experts and in a much shorter ***/value–The paper discusses various algorithms to provide the decision support for the real-world *** proposed systems are in the production use.

关键词： Genetic algorithms Cooperative coevolution Coordinated supply chain Time-varying constraints Supply chain management Time-varying control systems

Steady Compressible Euler Equations of Concentration Layers for Hypersonic-limit Flows Passing Three-dimensional Bodies and Generalized Newton-Busemann Pressure Law

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Chinese Annals of mathematics,Series B 2023年第4期44卷 561-576页

作者： Aifang QU Hairong YUAN department of mathematics Shanghai Normal UniversityShanghai 200234China School of Mathematical Sciences and Shanghai Key Laboratory of pure mathematics and Mathematical Practice East China Normal UniversityShanghai 200241China

For stationary hypersonic-limit Euler flows passing a solid body in three-dimensional space,the shock-front coincides with the upwind surface of the body,hence there is an infinite-thin layer of concentrated mass,in which all particles hitting the body move along its upwind *** proposing a concept of Radon measure solutions of boundary value problems of the multi-dimensional compressible Euler equations,which incorporates the large-scale of three-dimensional distributions of upcoming hypersonic flows and the small-scale of particles moving on two-dimensional surfaces,the authors derive the compressible Euler equations for flows in concentration layers,which is a stationary pressureless compressible Euler system with source terms and independent variables on curved *** a by-product,they obtain a formula for pressure distribution on surfaces of general obstacles in hypersonic flows,which is a generalization of the classical Newton-Busemann law for drag/lift in hypersonic aerodynamics.

关键词： Compressible Euler equations Hypersonic fow Concentration layer Ramp Cone Radon measure solution Newton-Busemann law

THE RIEMANN PROBLEM FOR ISENTROPIC COMPRESSIBLE EULER EQUATIONS WITH DISCONTINUOUS FLUX

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Acta Mathematica Scientia 2024年第1期44卷 37-77页

作者：孙印正屈爱芳袁海荣 department of mathematics Shanghai Normal UniversityShanghai200234China School of Mathematical Sciences and Shanghai Key Laboratory of pure mathematics and Mathematical Practice East China Normal UniversityShanghai200241China

We consider the singular Riemann problem for the rectilinear isentropic compressible Euler equations with discontinuous flux,more specifically,for pressureless flow on the left and polytropic flow on the right separated by a discontinuity x=x(t).We prove that this problem admits global Radon measure solutions for all kinds of initial *** over-compressing condition on the discontinuity x=x(t)is not enough to ensure the uniqueness of the ***,there is a unique piecewise smooth solution if one proposes a slip condition on the right-side of the curve x=x(t)+0,in addition to the full adhesion condition on its *** an application,we study a free piston problem with the piston in a tube surrounded initially by uniform pressureless flow and a polytropic *** particular,we obtain the existence of a piecewise smooth solution for the motion of the piston between a vacuum and a polytropic *** indicates that the singular Riemann problem looks like a control problem in the sense that one could adjust the condition on the discontinuity of the flux to obtain the desired flow field.

关键词： compressible Euler equations Riemann problem Radon measure solution delta shock discontinuous flux wave interactions