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Numerical and statistical approach for Casson-Maxwell nanofluid flow with Cattaneo-Christov theory

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Applied Mathematics and Mechanics(English Edition) 2021年第7期42卷 1063-1076页

作者： t.mushtaq A.RAUF S.A.SHEHZAD F.MUStAFA M.HANIF Z.ABBAS Department of Mathematics COMSATS University IslamabadVehari CampusVehari 61100Pakistan Department of Mathematics COMSATS University IslamabadSahiwal CampusSahiwal 57000Pakistan Department of Mathematics The Islamia University of BahawalpurBahawalpur 63100Pakistan

the rheological features of an incompressible axi-symmetric Casson-Maxwell nanofluid flow between two stationary disks are *** lower permeable disk is located at z=-a,while the upper disk is placed at z=*** the disks are porous and subjected to uniform *** fluid properties such as thermal conductivity vary with *** Cattaneo-Christov thermal expression is implemented along with the Buongiorno nanofluid *** operating the similarity functions,the reduced form of the fluid model in terms of ordinary differential equations is obtained and solved by the bvp4 c numerical *** physical quantities are demonstrated graphically on the velocity and temperature ***-dimensional flow arrangements and twodimensional contour patterns against several dimensionless variables are also *** numerical values of the local Nusselt and Sherwood numbers for various quantities are presented in tabular *** intensity of the linear relationship between the Nusselt and Sherwood numbers is assessed through Pearson’s product-moment correlation *** statistical implication of the linear association between variables is also examined by the t-test statistic approach.

关键词： Casson-Maxwell fluid porous disk Buongiorno theory variable thermal conductivity Cattaneo-Christov model uniform injection

Dynamics of bioconvection flow of micropolar nanoparticles with Cattaneo-Christov expressions

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Applied Mathematics and Mechanics(English Edition) 2020年第9期41卷 1333-1344页

作者： S.A.SHEHZAD t.mushtaq Z.ABBAS A.RAUF S.U.KHAN I.tLILI Department of Mathematics COMSATS University IslamabadSahiwal 57000Pakistan Department of Mathematics COMSATS University IslamabadVehari 61100Pakistan Department of Mathematics The Islamia University of BahawalpurBahawalpur 63100Pakistan Institute of Research and Development Duy Tan UniversityDa Nang 550000Vietnam Faculty of Civil Engineering Duy Tan UniversityDa Nang 550000Vietnam

A numerical analysis is performed to analyze the bioconvective double diffusive micropolar non-Newtonian nanofluid flow caused by stationary porous *** consequences of the current flow problem are further extended by incorporating the Brownian and thermophoresis *** energy and mass species equations are developed by utilizing the Cattaneo and Christov model of heat-mass *** flow equations are converted into an ordinary differential model by employing the appropriate *** numerical solution is reported by using the MAtLAB builtin bvp4c *** consequences of engineering parameters on the flow velocity,the concentration,the microorganisms,and the temperature profiles are evaluated *** numerical data for fascinating physical quantities,namely,the motile density number,the local Sherwood number,and the local Nusselt number,are calculated and executed against various parametric *** microrotation magnitude reduces for increasing magnetic *** intensity of the applied magnetic field may be utilized to reduce the angular rotation which occurs in the lubrication processes,especially in the suspension of *** the account of industrial applications,the constituted output can be useful to enhance the energy transport efficacy and microbial fuel cells.

关键词： bioconvection flow micropolar fluid nanoparticle Cattaneo-Christov theory porous disk

Anisotropic stellar structures in the f(t)theory of gravity with quintessence via embedding approach

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Chinese Physics C 2021年第4期45卷 426-439页

作者： Allah Ditta mushtaq Ahmad Ibrar Hussain G.Mustafa Department of Mathematics COMSATS University IslamabadLabore CampusPakistan National University of Computer and Emerging Sciences Chiniot-Faisalabad CampusPakistan School of Electrical Engineering and Computer Science National University of Sciences and TechnologyH-12IslanpabadPakistan Department of Mathematics Shanghai UniversityShanghai 200444China

this work suggests a new model for anisotropic compact stars with quintessence in f(t)gravity by us-ing the off-diagonal tetrad and the power-law as f(t)=βt^(n),where t is the scalar torsion andβand n are real *** acquired field equations incorporating the anisotropic matter source along with the quintessence field,in f(t)gravity,are investigated by making use of the specific character of the scalar torsion t for the observed stars PSRJ1614-2230,***-3,EXO1785-248,and *** is suggested that all the stellar struc-tures under examination are advantageously independent of any central singularity and are *** graphical analysis shows that various physical features which are crucially important for the emergence of the stellar structures are conferred.

关键词： quintessence power-law model f(t)gravity anisotropic compact stars

Influence of Non-linear Radiation Heat Flux on Rotating Maxwell Fluid over a Deformable Surface: A Numerical Study

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Communications in theoretical Physics 2018年第4期69卷 461-466页

作者： M.Mustafa A.mushtaq t.Hayat A.Alsaedi School of Natural Sciences (SNS) National University of Sciences and Technology (NUST) Research Centre for Modeling and Simulation (RCMS) National University of Sciences and Technology (NUST) Department of Mathematics Quaid-I-Azam University 45320 Department of Mathematics Faculty of Science King Abdulaziz University

Mathematical model for Maxwell fluid flow in rotating frame induced by an isothermal stretching wall is explored numerically. Scale analysis based boundary layer approximations are applied to simplify the conservation relations which are later converted to similar forms via appropriate substitutions. A numerical approach is utilized to derive similarity solutions for broad range of Deborah number. the results predict that velocity distributions are inversely proportional to the stress relaxation time. this outcome is different from that observed for the elastic parameter of second grade fluid. Unlike non-rotating frame, the solution curves are oscillatory decaying functions of similarity variable. As angular velocity enlarges, temperature rises and significant drop in the heat transfer coefficient occurs. We note that the wall slope of temperature has an asymptotically decaying profile against the wall to ambient ratio parameter. From the qualitative view point, temperature ratio parameter and radiation parameter have similar effect on the thermal boundary layer. Furthermore, radiation parameter has a definite role in improving the cooling process of the stretching boundary.A comparative study of current numerical computations and those from the existing studies is also presented in a limiting case. to our knowledge, the phenomenon of non-linear radiation in rotating viscoelastic flow due to linearly stretched plate is just modeled here.

关键词： rotating frame Maxwell model thermal radiation stretching sheet shooting method boundary layer flow

Causality between bank’s major activities and economic growth:evidences from Pakistan

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Financial Innovation 2016年第1期2卷 87-97页

作者： Saba mushtaq Karachi University Business School University of KarachiKarachiPakistan

Background:Banking is an important sector of Pakistan’s *** is general consideration that bank’s major activities saving and lending have positive impact on economic *** the aim of this study is to investigate this consideration and also investigate that either growth led deposits and credits,or deposit and credits led growth means the purpose of this study is to investigate the direction of this ***:Johansen test of Co-integration and Granger Causality is employed by using time series data of Pakistan from 1961 to ***:the results show that two major activities of banking sector that are saving and lending don’t have any long run or short run causality towards economic growth so the general consideration of positive impact of these activities proved wrong in case of *** there is unidirectional causality running from GDP growth to credit provided by banking sector which shows that economic prosperity or economic growth will have a major impact on lending activities of banks meaning that demand following hypothesis is true for Pakistan in case of GDP and Bank’s credit or we can say that growth led Bank’s credit in ***:Hence Government and central bank should make policies by keeping this fact in consideration that bank’s two major activities that are saving and lending does not have impact on GDP *** might be other factors which influence economic growth of Pakistan more than banking sector these activities,which can be bank’s profitability,human resource,technology,infrastructure and other sectors of the *** GDP growth affects bank’s lending activities so during high economic growth year central bank and private bank’s management should introduce easy loans for businesses and industries and during poor economic growth years personal loan’s new schemes should be introduce by banks.

关键词： Granger Causality Cointegration Economic Growth Bank deposits Bank’s credit

Control of hybrid DC/AC microgrid system employing fuel cell and solar photovoltaic sources using grey wolf optimization

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Clean Energy 2022年第4期6卷 659-670页

作者： Ahmed M.Al-Antaki t.V.Golubchik mushtaq A.Al-Furaiji H.J.Mohammed Moscow Automobile and Road Construction State technical University(MADI) Leningradsky Ave.64Moscow125319Russian Federation Bauman Moscow State technical University MoscowRussian Federation Faculty of Energy and Ecotechnology ITMO University49 Kronverksky prospectSt.Petersburg197101Russian Federation Department of Mechanical Engineering College of EngineeringUniversity of MisanMisanAl-Amarah62001Iraq Institute of Energy Peter the Great St.Petersburg Polytechnic UniversitySaint Petersburg 195251Russian Federation

the outcome of this study is to improve and enhance the power quality of the hybrid DC/AC microgrid(MG).the photovoltaic(PV)system and the proton exchange membrane fuel cell(PEMFC)are used as renewable energy sources to deliver the optimum active power to the utility *** MG system based on the PV system,PEMFC and voltage source inverter is modelled ***,the maximum power point tracking(MPPt)-based grey wolf optimization(GWO)is used to increase the PV module efficiency and enhance ***,to improve the PEMFC performance,a digital proportional-integral controller is used to control the PEMFC *** proposed inverter is controlled using synchronous reference frame theory,called the direct-quadrature(dq)control ***,the performance of the proposed MG system is tested using MAtLAB®for various weather and loading condi*** the simulation results,the proposed MG system can deliver and absorb an active power based on the PV and fuel cell *** a result,the hybrid DC/AC MG is enhanced in terms of stabilization of the DC-bus ***,the power quality of the MG is improved using GWO optimization based on ***,good results are achieved using GWO in terms of the total harmonic distortion of the output current of 2.3%and higher efficiency of 98.9%.

关键词： DC/AC inverter optimization

transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 177-192页

作者： M.NAVEED M.IMRAN t.ASGHAR Z.ABBAS Department of Mathematics Division of Science and TechnologyUniversity of Education Department of Mathematics The Islamia University of Bahawalpur

this paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. the influence of magnetic fields is also inspected in terms of their physical characteristics. to depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAM).the effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the Schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the Schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

关键词： hybrid nanofluid oscillating curved stretchable sheet gyrotactic microorganism Cattaneo-Christov heat and mass flux chemical reaction analytical solution O368

Ovalbumin-loaded paramagnetic nano-triangles for enhanced dendritic cell stimulation,t_(1)-MR imaging,and antitumor immunity

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Journal of Materials Science & technology 2023年第17期148卷 123-137页

作者： Yike Hou Zhe tang Jabeen Farheen Madiha Saeed Lijia Luo Wenzi Ren Dandan Luo Asim mushtaq Ruibo Zhao Jian Ge Zhangsen Yu Yao Li M.Zubair Iqbal Xiangdong Kong Institute of Smart Biomedical Materials School of Materials Science and EngineeringZhejiang Sci-Tech UniversityHangzhou 310018China State Key Laboratory of Drug Research&Center of Pharmaceutics Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China Cixi Institute of Biomedical Engineering CAS Key Laboratory of Magnetic Materials and DevicesKey Laboratory of Additive Manufacturing Materials of Zhejiang ProvinceNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Department of Materials Imperial College LondonLondon SW72AZUK College of Life Sciences China Jiliang UniversityHangzhou 310018China Laboratory of Nanomedicine Medical Science Research CenterSchool of MedicineShaoxing UniversityShaoxing 312000China

Vaccine-based cancer immunotherapy has demonstrated a significant potential for cancer treatment in *** the efficiencies of vaccines are limited,they can be enhanced by a well-designed antigen delivery system that promotes sufficient antigen presentation of dendritic cells(DCs)for initiating high t cell ***,antigen-loaded manganese oxide(Mn_(3)O_(4))triangular-shaped ultrasmall nanoparti-cles were prepared to stimulate DC-based immunotherapy under the guidance of t_(1)magnetic resonance *** FDA-approved triblock copolymer Pluronic^(■)F-68 wasused not onlyto transferthe phase from hydrophobic to hydrophilic but also to enrich antigen loading and improve the biocompatibility of the prepared ***(OVA),a model antigen,was adsorbed on the surface of polymer-coated nanoparticles through electrostatic interaction to form Mn_(3)O_(4)@PF68-OVA nanoparticle-antigen complexes to stimulate DC-based immunization and antigen-specific t cell *** Mn_(3)O_(4)@PF68-OVA nanovaccine(NV)induces negligible toxicity effects against 4t1 and bone marrow-derived dendritic cells(BMDCs)by conventional methods supports the proliferation of intestine organoids,which are an innovative three-dimensional cytotoxicity evaluation system,thereby indicating their potential safety for in vivo cancer *** designed paramagnetic nanovaccine possessed excellent OVA delivery to dendritic-regulated antigen-specific t cells in vitro by stimulating the maturation level of *** ad-dition,Mn_(3)O_(4)@PF68-OVA NVs enhance immunity in vivo by increasing the t-cells and M1 macrophages,which suggests improved ***,vaccination with Mn_(3)O_(4)@PF68-OVA offer complete pro-tection in the prophylactic group and significant tumor inhibition in the therapeutic group against B16-OVA *** addition,the designed nanovaccine demonstrated high t_(1)-MR imaging in the tumor,fur-ther justifying enhanced tumor accumulation and capability to

关键词： Ovalbumin Nanovaccine Antigen delivery Magnetic resonance imaging Contrast agent Cancer immunotherapy

the impact of alpha-fetoprotein (AFP), child-turcotte-pugh (CtP) score and disease staging on the survival of hepatocellular carcinoma (HCC) patients: a retrospective cohort from single oncology center

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Oncology research 2025年第1期33卷 149-160页

作者： Nasser Mulla Yousef Katib Asim M Almughamsi Duaa S Alkhayat Mohamed Mosaad Samir t Alfotih Rawan Alaofi Department of Internal Medicine Faculty of Medicine Taibah University Madinah 42278 Saudi Arabia. Department of Radiology Faculty of Medicine Taibah University Madinah 42278 Saudi Arabia. Department of Surgery Faculty of Medicine Taibah University Madinah 42278 Saudi Arabia. Department of Endemic and Infectious Diseases Suez Canal University Ismailia 41522 Egypt. King Salman bin Abdulaziz Medical City Madinah 42311 Saudi Arabia. Prince Mohammed Bin Abdulaziz Hospital Madinah 41511 Saudi Arabia.

Background:Hepatocellular carcinoma (HCC) is the most common cause of cancer-related death in Saudi Arabia. Our study aimed to investigate the patterns of HCC and the effect of tNM staging, Alfa-fetoprotein (AFP), and Child-turcotte Pugh (CtP) on patients' overall survival (OS).Methods:A retrospective analysis was conducted on 43 HCC patients at a single oncology center in Saudi Arabia from 2015 to 2020. All patients had to fulfill one of the following criteria: (a) a liver lesion reported as definitive HCC on dynamic imaging and/or (b) a biopsy-confirmed diagnosis.Results:the mean patient age of all HCC cases was 66.8 with a male-to-female ratio of 3.3:1. All patients were stratified into two groups: viral HCC (n = 22, 51%) and non-viral HCC (n = 21, 49%). Among viral-HCC patients, 55% were due to HBV and 45% due to HCV. Cirrhosis was diagnosed in 79% of cases. Age and sex did not significantly statistically differ in OS among viral and non-viral HCC patients (-value > 0.05). About 65% of patients had tumor size >5 cm during the diagnosis, with a significant statistical difference in OS (-value = 0.027). AFP was >400 ng/ml in 45% of the patients. there was a statistically significant difference in the OS in terms of AFP levels (-value = 0.021). A statistically significant difference was also observed between the CtP score and OS (-value = 0.02). CtP class B had the longest survival. BSC was the most common treatment provided to HCC patients followed by sorafenib therapy. there was a significant statistical difference in OS among viral and non-viral HCC patients (-value = 0.008).Conclusions:the most common predictors for OS were the underlying cause of HCC, AFP, and tumor size. Being having non-viral etiology, a tumor size >5 cm, an AFP > 400 ng/mL, and a CtP score class C were all negatively associated with OS.

关键词： Alpha-fetoprotein (AFP) Child-turcotte-pugh Hepatocellular carcinoma Pattern Progression free survival