检索结果-南通市图书馆

Transportation of heat through Cattaneo-Christov heat flux model in non-Newtonian fluid subject to internal resistance of particles

引用

Applied mathematics and mechanics(English Edition) 2020年第8期41卷 1157-1166页

作者： m.i.khan F.ALZAHRANi Department of mathematics Riphah International UniversityFaisalabad 38000Pakistan Nonlinear Analysis and Applied mathematics(NAAm)-Research Group Department of MathematicsFaculty of SciencesKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Thermal conduction which happens in all phases(liquid,solid,and gas)is the transportation of internal energy through minuscule collisions of particles and movement of electrons within a working *** colliding particles comprise electrons,molecules,and atoms,and transfer disorganized microscopic potential and kinetic energy,mutually known as the internal *** engineering sciences,heat transfer comprises the processes of convection,thermal radiation,and sometimes mass ***,more than one of these procedures may happen in a given *** use the Cattaneo-Christov(CC)heat flux model instead of the Fourier law of heat conduction to discuss the behavior of heat transportation.A mathematical model is presented for the Cattaneo-Christov double diffusion(CCDD)in the flow of a non-Newtonian nanofluid(the Jeffrey fluid)towards a stretched *** magnetohydrodynamic(mHD)fluid is *** behaviors of heat and mass transportation rates are discussed with the *** models are based on Fourier’s and Fick’s *** convective transportation in nanofluids is discussed,subject to thermophoresis and Brownian *** nonlinear governing flow expression is first altered into ordinary differential equations via appropriate transformations,and then numerical solutions are obtained through the built-in-shooting *** impact of sundry flow parameters is discussed on the velocity,the skin friction coefficient,the temperature,and the concentration *** is reported that the velocity of material particles decreases with higher values of the Deborah number and the ratio of the relaxation to retardation time *** temperature distribution enhances when the Brownian motion and thermophoresis parameters *** concentration shows contrasting impact versus the Lewis number and the Brownian motion *** is also noticed that the skin friction coefficient decreases when the ratio of the relaxation to retarda

关键词： Cattaneo-Christov double diffusion(CCDD) non-Newtonian fluid model(Jeffrey model) viscous dissipation magnetohydrodynamic(mHD) Brownian diffusion thermophoresis diffusion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

investigation of generalized Fick's and Fourier's laws in the second-grade fluid flow

引用

Applied mathematics and mechanics(English Edition) 2018年第11期39卷 1617-1630页

作者： T.HAYAT S.AHmAD m.i.khan A.ALSAEDi Department of mathematics Quaid-i-Azam University Nonlinear Analysis and Applied mathematics (NAAm) Research Group Department of Mathematics Faculty of Science King Abdulaziz University

The second-grade fluid flow due to a rotating porous stretchable disk is modeled and analyzed. A porous medium is characterized by the Darcy relation. The heat and mass transport are characterized through Cattaneo-Christov double *** thermal and solutal stratifications at the surface are also accounted. The relevant nonlinear ordinary differential systems after using appropriate transformations are solved for the solutions with the homotopy analysis method(HAm). The effects of various involved variables on the temperature, velocity, concentration, skin friction, mass transfer rate, and heat transfer rate are discussed through graphs. From the obtained results,decreasing tendencies for the radial, axial, and tangential velocities are observed. Temperature is a decreasing function of the Reynolds number, thermal relaxation parameter,and Prandtl number. moreover, the mass diffusivity decreases with the Schmidt number.

关键词： second-grade liquid thermal and solutal stratification Cattaneo-Christov double diffusion rotating stretchable disk

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Stability analysis and modeling for the three-dimensional Darcy-Forchheimer stagnation point nanofluid flow towards a moving surface

引用

Applied mathematics and mechanics(English Edition) 2021年第3期42卷 357-370页

作者： Yuming CHU m.i.khan m.i.U.REHmAN S.KADRY S.QAYYUm m.WAQAS Department of mathematics Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina Hunan Provincial Key Laboratory of mathematical modeling and Analysis in Engineering Changsha University of Science&TechnologyChangsha 410114China Department of mathematics Riphah International UniversityFaisalabad CampusFaisalabad 38000Pakistan Department of mathematics Quaid-i-Azam UniversityIslamabad 44000Pakistan Department of mathematics and Computer Science Beirut Arab UniversityBeirut 11072809Lebanon NUTECH School of Applied Sciences and Humanities National University of TechnologyIslamabad 44000Pakistan

in this research,the three-dimensional(3D)steady and incompressible laminar Homann stagnation point nanofluid flow over a porous moving surface is *** disturbance in the porous medium has been characterized by the Darcy-Forchheimer *** slip for viscous fluid is *** energy equation is organized in view of radiative heat flux which plays an important role in the heat transfer *** governing flow expressions are first altered into first-order ordinary ones and then solved numerically by the shooting *** solutions are obtained for the velocity,skin friction coefficient,temperature,and Nusselt number subject to sundry flow parameters,magnetic parameter,Darcy-Forchheimer number,thermal radiation parameter,suction parameter,and dimensionless slip *** this research,the main consideration is given to the engineering interest like skin friction coefficient(velocity gradient or surface drag force)and Nusselt number(temperature gradient or heat transfer rate)and discussed numerically through *** conclusion,it is noticed from the stability results that the upper branch solution(UBS)is more reliable and physically stable than the lower branch solution(LBS).

关键词： viscous slip Darcy-Forchheimer relation thermal radiation stagnation point flow dual solution heat generation/absorption stability result

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

mathematical modeling of mixed convective mHD Falkner-Skan squeezed Sutterby multiphase flow with non-Fourier heat flux theory and porosity

引用

Applied mathematics and mechanics(English Edition) 2023年第11期44卷 2005-2018页

作者： Shuguang Li m.i.khan F.ALi S.S.ABDULLAEV S.SAADAOUi HABiBULLAH School of Computer Science and Technology Shandong Technology and Business UniversityYantai 264005Shandong ProvinceChina Department of mechanics and Engineering Science Peking UniversityBeijing 100871China Department of mechanical Engineering Lebanese American UniversityBeirut 11020Lebanon Department of mathematical Sciences Federal Urdu University of ArtsSciences&TechnologyGulshan-e-IqbalKarachi 75300Pakistan Faculty of Chemical Engineering New Uzbekistan UniversityTashkent 100070Uzbekistan Department of Science and innovation Tashkent State Pedagogical University named after NizamiTashkent 100070Uzbekistan Department of Physics Faculty of Science and ArtsMohayel AserKing Khalid UniversityAbha 61421Saudi Arabia State Key Laboratory of Turbulence and Complex System Collaborative Innovative Center for Advanced Aero-EnginesPeking UniversityBeijing 100871China

in a wide variety of mechanical and industrial applications,e.g.,space cooling,nuclear reactor cooling,medicinal utilizations(magnetic drug targeting),energy generation,and heat conduction in tissues,the heat transfer phenomenon is ***’s law of heat conduction has been used as the foundation for predicting the heat transfer behavior in a variety of real-world *** model’s production of a parabolic energy expression,which means that an initial disturbance would immediately affect the system under investigation,is one of its main ***,numerous researchers worked on such problem to resolve this *** last,this problem was resolved by Cattaneo by adding relaxation time for heat flux in Fourier’s law,which was defined as the time required to establish steady heat conduction once a temperature gradient is *** offered a material invariant version of Cattaneo’s model by taking into account the upper-connected derivative of the Oldroyd ***,both models are combinedly known as the Cattaneo-Christov(CC)*** this attempt,the mixed convective mHD Falkner-Skan Sutterby nanofluid flow is addressed towards a wedge surface in the presence of the variable external magnetic *** CC model is incorporated instead of Fourier’s law for the examination of heat transfer features in the energy expression.A two-phase nanofluid model is utilized for the implementation of *** nonlinear system of equations is tackled through the bvp4c technique in the mATLAB software *** influence of pertinent flow parameters is discussed and displayed through different *** and important results are summarized in the conclusion ***,in both cases of wall-through flow(i.e.,suction and injection effects),the porosity parameters increase the flow speed,and decrease the heat transport and the influence of drag forces.

关键词： sporosity Cattaneo-Christov(CC)heat flux model Falkner-Skan Sutterby nanofluid mixed convection stagnation point

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Regular perturbation solution of Couette flow(non-Newtonian)between two parallel porous plates: a numerical analysis with irreversibility

引用

Applied mathematics and mechanics(English Edition) 2021年第1期42卷 127-142页

作者： m.NAZEER m.i.khan S.KADRY Yuming CHU F.AHmAD W.ALi m.iRFAN m.SHAHEEN Department of mathematics Institute of Arts and SciencesGovernment College UniversityChiniot CampusFaisalabad 35400Pakistan Department of mathematics and Statistics Riphah International University I-14Islamabad 44000Pakistan Department of mathematics and Computer Science Beirut Arab UniversityBeirut 11-5020Lebanon Department of mathematics Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina Hunan Provincial Key Laboratory of mathematical modeling and Analysis in Engineering Changsha University of Science&TechnologyChangsha 410114China Department of Applied Sciences National Textile UniversityFaisalabad 38000Pakistan Chair of Production Technology Faculty of Engineering TechnologyUniversity of TwenteEnschede 7500 AEThe Netherlands Department of mathematics Riphah Inernational LniversityFaisalabad CampusFaiselabad 38000Pakistan

The unavailability of wasted energy due to the irreversibility in the process is called the entropy *** irreversible process is a process in which the entropy of the system is *** second law of thermodynamics is used to define whether the given system is reversible or ***,our focus is how to reduce the entropy of the system and maximize the capability of the *** are many methods for maximizing the capacity of heat *** constant pressure gradient or motion of the wall can be used to increase the heat transfer rate and minimize the *** objective of this study is to analyze the heat and mass transfer of an Eyring-Powell fluid in a porous *** this,we choose two different fluid models,namely,the plane and generalized Couette *** flow is generated in the channel due to a pressure gradient or with the moving of the upper *** present analysis shows the effects of the fluid parameters on the velocity,the temperature,the entropy generation,and the Bejan *** nonlinear boundary value problem of the flow problem is solved with the help of the regular perturbation *** validate the perturbation solution,a numerical solution is also obtained with the help of the built-in command NDSolve of mATHEmATiCA *** velocity profile shows the shear thickening behavior via first-order Eyring-Powell *** is also observed that the profile of the Bejan number has a decreasing trend against the Brinkman ***ηi→0(i=1,2,3),the Eyring-Powell fluid is transformed into a Newtonian fluid.

关键词： Couette flow Eyring-Powell fluid entropy generation perturbation method Bejan number

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

二温式多重PCR同时检测鸡的6种呼吸道病病原方法的建立

引用

中国兽医科技 2001年第5期31卷 3-6页

作者：庞耀珊谢芝勋 m.i.khan 广西壮族自治区兽医研究所广西南宁530001 美国康涅狄格州大学兽医系

设计了 6对分别针对鸡传染性支气管炎病毒 (iBV )、禽流感病毒 (AiV)、鸡毒霉形体 (mG )、鸡传染性喉气管炎病毒 (iLTV )、新城疫病毒 (NDV)和滑液霉形体 (mS)的特异性引物 ,根据反转录聚合酶链反应 (RT PCR)原理和多重PCR原则 ,优化建... 详细信息

设计了 6对分别针对鸡传染性支气管炎病毒 (iBV )、禽流感病毒 (AiV)、鸡毒霉形体 (mG )、鸡传染性喉气管炎病毒 (iLTV )、新城疫病毒 (NDV)和滑液霉形体 (mS)的特异性引物 ,根据反转录聚合酶链反应 (RT PCR)原理和多重PCR原则 ,优化建立了一次PCR反应同时检测 6种禽呼吸道病原的二温式多重PCR。该方法可同时扩增出 6条区段大小与设计相符的特异性片段 ,即iBV 172 0bp、AiV 10 5 0bp、mG 73 2bp、iLTV 64 7bp、NDV 3 10bp、mS 2 0 7bp ,对人工感染鸡临床样品检测结果证明 ,该方法可用于临床诊断。

关键词：二温式多重PCR 鸡呼吸道疾病病原检测

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

应用多重PCR检测人工感染鸡呼吸道疾病的研究

引用

中国预防兽医学报 2001年第6期23卷 415-418页

作者：庞耀珊谢芝勋 m.i.khan 谢志勤刘加波邓显文廖敏广西兽医研究所广西南宁530001 美国康涅狄格州大学兽医系禽病分子生物学研究室

本文报道了iBV、NDV、iLTV、mG人工感染 4周龄SPF鸡和非免疫鸡后 ,用多重PCR检测试验鸡的咽喉棉拭子和器官组织样品 ,并与传统的病原分离鉴定、血清学方法进行比较。多重PCR无论是对单一感染病原 ,还是对两种以上混合感染病原 ,其敏感... 详细信息

本文报道了iBV、NDV、iLTV、mG人工感染 4周龄SPF鸡和非免疫鸡后 ,用多重PCR检测试验鸡的咽喉棉拭子和器官组织样品 ,并与传统的病原分离鉴定、血清学方法进行比较。多重PCR无论是对单一感染病原 ,还是对两种以上混合感染病原 ,其敏感性和检测速度都优于传统的鉴别诊断方法 ,具有较高的实用价值 ,可以直接应用于临床检测。

关键词：呼吸道疾病临床样品多重PCR 检测

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

PCR技术在禽支原体诊断上的发展和应用

PCR技术在禽支原体诊断上的发展和应用

引用

中国畜牧兽医学会禽病学分会第十一次学术研讨会

作者：张秀美 m.i.khan 山东省农业科学院畜牧研究所 University of Connecticut.Department of Pathobiology & Veterinary Sciences.Storrs CT 06269

从mG、mS和mm三种致病性禽支原体培养物提取DNA,应用各自的特异性引物.分别及组合进行PCR,均得到了特异性的扩增产物.片段大小分别为***850bp。直接用支原体液体培养物进行PCR亦得到了一致的结果。实验表明,建立的PCR方法可用于三种支... 详细信息

从mG、mS和mm三种致病性禽支原体培养物提取DNA,应用各自的特异性引物.分别及组合进行PCR,均得到了特异性的扩增产物.片段大小分别为***850bp。直接用支原体液体培养物进行PCR亦得到了一致的结果。实验表明,建立的PCR方法可用于三种支原体临床感染的鉴别诊断。

关键词：禽支原体诊断 PCR

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Arctic sea-ice extent: No record minimum in 2023 or recent years

引用

Atmospheric and Oceanic Science Letters 2025年第1期18卷 52-55页

作者： Ola m.Johannessen Tor i.Olaussen Nansen Scientific Society BergenNorway Nansen Environmental and Remote Sensing Center BergenNorway

Arctic sea-ice extent reaches its minimum each year in September. On 11 September 2023 the minimum was 4.969 million square kilometers(***^(2)). This was not a record low, which occurred in 2012, when the minimum was 4.175 ***^(2), 0.794 ***^(2) less than the minimum in 2023. However, the ice extent had decreased by 0.432 ***^(2) compared with 2022. Nevertheless, the summer melting in 2023 was remarkably less than expected when considering the strong heat waves in the atmosphere and ocean, with record temperatures set around the world. in general, there is a high correlation between the long-term decrease in sea-ice extent and the increasing CO_(2) in the atmosphere, where the increase of CO_(2) in recent decades explains about 80% of the decrease in sea ice in September, while the remainder is caused by natural variability.

关键词： Sea ice Arctic minimum ice Climate

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Variation in Salt Tolerance of Wheat Cultivars:Role of Glycinebetaine and Ethylene

引用

Pedosphere 2012年第6期22卷 746-754页

作者： m.i.R.khan N.iQBAL A.mASOOD N.A.khan Department of Botany Aligarh Muslim UniversityAligarh 202002(India)

Four wheat （Triticum aestivum L.） cultivars 711, PBW343, 3765 and WH542 were screened for studying variations in glycinebetaine （GB） content and plant dry mass under 100 mmol L-1 NaCl stress. A tolerance index was calculated using plant dry mass data to select salt-tolerant and salt-sensitive types and find association between tolerance index and GB content. Tolerance index has been used as a good criterion to select the tolerant types under high salinity stress. Further, physiological differences in salt-tolerant cultivar 711 and salt-sensitive cultivar WH542 were examined. The salt-tolerant cultivar exhibited greater CB content, which was found correlative with ethylene. The cultivar also showed higher nitrogen （N） content and nitrate reductase activity, reduced glutathione and higher redox state resulting in maximal protection of plant dry mass than the salt-sensitive type. Thus, the content of CB may be considered as important physiological criteria for selecting salt-tolerant wheat types.

关键词： glutathione nitrogen assimilation salt stress

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：