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Heat Transfer of Casson Fluid over a Vertical Plate with Arbitrary Shear Stress and Exponential Heating

Computers, Materials & Continua 2022年第4期71卷 1025-1034页

作者： Dolat Khan Gohar Ali Arshad khan Ilyas khan Department of Mathematics City University of Science and Information TechnologyPeshawar25000Pakistan Institute of Computer Sciences and Information Technology The University of AgriculturePeshawarPakistan Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh City72915Vietnam

The basic objective of this work is to study the heat transfer of Casson fluid of non-Newtonian nature.The fluid is considered over a vertical plate such that the plate exhibits arbitrary wall shear stress at the boundary.Heat transfers due to exponential plate heating and natural convection are due to buoyancy force.Magnetohydrodynamic(MHD)analysis in the occurrence of a uniform magnetic field is also considered.The medium over the plate is porous and hence Darcy’s law is applied.The governing equations are established for the velocity and temperature fields by the usual Boussinesq approximation.The problem is first written in dimensionless form using some useful non-dimensional quantities and then solved.The exact analysis is performed and hence solutions via integral transform are established.The analysis of various pertinent parameters on temperature distribution and velocity field are reported graphically.It is found that pours medium permeability parameter retards the fluid motion whereas,velocity decreases with increasing magnetic parameter.Velocity and temperature decrease with increasing Prandtl number whereas the Grashof number enhances the fluid motion.Further,it is concluded from this study that the results obtained here are more general and in a limiting sense several other solutions can be recovered.The Newtonian fluid results can be easily established by taking the Casson parameter infinitely large i.e.,whenβ→∞.

关键词： Heat transfer casson fluid shear stress natural convection

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A New Idea of Fractal-Fractional Derivative with Power Law Kernel for Free Convection Heat Transfer in a Channel Flow between Two Static Upright Parallel Plates

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Computers, Materials & Continua 2020年第11期65卷 1237-1251页

作者： Dolat Khan Gohar Ali Arshad khan Ilyas khan Yu-Ming Chu Kottakkaran Sooppy Nisar Department of Mathematics City University of Science and Information TechnologyPeshawar25000Pakistan Institute of Computer Sciences and Information Technology The University of AgriculturePeshawarPakistan Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh72915Vietnam Department of Mathematics Huzhou UniversityHuzhou313000China Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering Changsha University of Science&TechnologyChangsha410114China Department of Mathematics College of Arts and SciencesPrince Sattam bin Abdulaziz UniversityWadi Aldawaser11991Saudi Arabia

Nowadays some new ideas of fractional derivatives have been used successfully in the present research community to study different types of mathematical models.Amongst them,the significant models of fluids and heat or mass transfer are on priority.Most recently a new idea of fractal-fractional derivative is introduced;however,it is not used for heat transfer in channel flow.In this article,we have studied this new idea of fractal fractional operators with power-law kernel for heat transfer in a fluid flow problem.More exactly,we have considered the free convection heat transfer for a Newtonian fluid.The flow is bounded between two parallel static plates.One of the plates is heated constantly.The proposed problem is modeled with a fractal fractional derivative operator with a power-law kernel and solved via the Laplace transform method to find out the exact solution.The results are graphically analyzed via MathCad-15 software to study the behavior of fractal parameters and fractional parameter.For the influence of temperature and velocity profile,it is observed that the fractional parameter raised the velocity and temperature as compared to the fractal operator.Therefore,a combined approach of fractal fractional explains the memory of the function better than fractional only.

关键词： Fractal-fractional derivative power law kernel convection heat transfer upright parallel plates

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深呼吸练习对冠状动脉旁路移植术后胸腔引流管拔除疼痛水平的影响

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International Journal of Nursing Sciences 2022年第2期9卷 155-161,I0003页

作者： Mohamad I.Jarrah Issa M.Hweidi Sirin A.Al-dolat Hossam N.Alhawatmeh Salwa M.Al-Obeisat Lama I.Hweidi Aysam I.Hweidi Osama A.Alkouri Faculty of Medicine Jordan University of Science&TechnologyIrbidJordan Faculty of Nursing Jordan University of Science&TechnologyIrbidJordan Faculty of Nursing Al-Ahliyya Amman UniversityAmmanJordan

目的本研究旨在评价缓慢深呼吸放松练习(slow deep breathing relaxation exercise,SDBRE)在冠状动脉旁路移植术(coronary artery bypass grafting,CABG)后患者胸腔引流管拔除(chest tube removal,CTR)中减轻疼痛水平的有效性。方法2019年便利选取约旦心脏转诊机构的重症监护室中50例CABG患者,将其随机分为干预组(25例)和对照组(25例)。干预组患者在CTR前,在常规护理的基础上同时接受SDBRE训练。对照组患者在常规护理措施后进行CTR。在CTR前(Time 1)、CTR后5 min(Time 2)和CTR后15 min(Time 3),采用视觉模拟量表(Visual Analogue Scale,VAS)来测量患者疼痛水平,以比较两组之间的干预效果。结果数据显示,两组患者的疼痛水平随着时间变化均有下降趋势(H=32.71,P<0.01;H=47.23,P<0.01)。干预组患者疼痛水平在Time 2[3.50(1.15,5.55)比7.90(6.80,9.00),P<0.01]、Time 3[0.00(0.00,1.35)比3.60(2.20,4.25),P<0.01]时均低于对照组。结论在CABG术后胸腔引流管拔除前应用SDBRE,是一种有效减轻疼痛的技术,可以减少对镇痛药的需求及其相关的不良反应。

关键词：呼吸运动胸腔引流管拔除冠状动脉搭桥术疼痛患者约旦

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Partial Discharge Source Classification and De-Noising in Rotating Machines Using Discrete Wavelet Transform and Directional Coupling Capacitor

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Journal of Electromagnetic Analysis and Applications 2009年第2期1卷 92-96页

作者： Mohammad Amin Kashiha Diman Zad Tootaghaj dolat Jamshidi 不详

This paper introduces a new method to separate PD1 from other disturbing signals present on the high voltage genera-tors and motors. The method is based on combination of a pattern classifier, the Discrete Wavelet Transform (DWT), to de-noise PD and Time-Of-Arrival method to separate PD sources. Furthermore, it will be shown that it can recognize PD sources including rotating machine’s internal and external discharge pulses (e.g. on the bus bar).

关键词： Partial Discharge Discrete Wavelet Transform Time-Of-Arrival Rotating Machines De-Noising Coupling Capacitor

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诺普丰叶面肥在温室番茄上的应用研究

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北方园艺 2011年第17期 56-57页

作者：王浩买合木提.肉孜蒋业基王强木合甫力.多来提新疆农业科学院园艺作物研究所新疆乌鲁木齐830091 喀什地区农业技术推广中心新疆喀什844000

以番茄品种"印帝安"为试材,采用叶面喷施方法,研究了不同叶面肥对温室番茄的作用效果。结果表明:叶面喷施诺普丰的番茄茎粗、单果重和单产均高于对照,喷施诺普丰对单果重影响最大,增产率达到5.84%。

关键词：诺普丰叶面肥番茄产量

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