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Second Law Analysis of Magneto Radiative GO-MoS_(2)/H_(2)O–(CH_(2)OH)_(2) Hybrid Nanofluid

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Computers, Materials & Continua 2021年第7期68卷 213-228页

作者： Adnan Umar Khan Naveed Ahmed syed tauseef Mohyud-Din Dumitru Baleanu Kottakkaran Sooppy Nisar Ilyas Khan Department of Mathematics Mohi-ud-Din Islamic UniversityNerian Sharif AJ&K12080Pakistan Department of Mathematics and Statistics Hazara UniversityMansehra21120Pakistan Department of Mathematics Faculty of Sciences HITEC UniversityTaxila Cantt47070Pakistan University of Multan Multan66000Pakistan Department of Mathematics Cankaya UniversityAnkaraTurkey Institute of Space Sciences Magurele077125Romania Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan Department of Mathematics College of Arts and SciencesPrince Sattam bin Abdulaziz UniversityWadiAldawaser11991Saudi Arabia Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh City72915Vietnam

Entropy Generation Optimization(EGO)attained huge interest of scientists and researchers due to its numerous applications comprised in mechanical engineering,air conditioners,heat engines,thermal machines,heat exchange,refrigerators,heat pumps and substance mixing ***,the study of radiative hybrid nanofluid(GO-MoS_(2)/C_(2)H_(6)O_(2)–H_(2)O)and the conventional nanofluid(MoS_(2)/C_(2)H_(6)O_(2)–H_(2)O)is conducted in the presence of Lorentz *** flow configuration is modeled between the parallel rotating plates in which the lower plate is *** models which govern the flow in rotating system are solved numerically over the domain of interest and furnished the results for the temperature,entropy generation and thermophysical characteristics of the hybrid as well as conventional nanofluids,*** is examined that the thermal profile intensifies against stronger thermal radiations and magnetic *** surface of the plate is heated due to the imposed thermal radiations and magnetic field which cause the increment in the *** is also observed that the temperature declines against more rotating ***,the entropy production increases for more dissipative effects and declines against more magnetized *** conductivities of the hybrid nanofluid enhances promptly in comparison with regular liquid therefore,under consideration hybrid nanofluid is reliable for the heat ***,dominating thermal transport is perceived for the hybrid nanofluid which showed that hybrid suspension GO-MoS_(2)/C_(2)H_(6)O_(2)–H_(2)O is better for industrial,engineering and technological uses.

关键词： Heat transfer thermal radiation Entropy Generation GO-MoS_(2)hybrid nanoparticles thermophysical characteristics

Al_(2)O_(3) andγAl_(2)O_(3) Nanomaterials Based Nanofluid Models with Surface Diffusion:Applications for Thermal Performance in Multiple Engineering Systems and Industries

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Computers, Materials & Continua 2021年第2期66卷 1563-1576页

作者： Adnan Umar Khan Naveed Ahmed syed tauseef Mohyud-Din Ilyas Khan Dumitru Baleanu Kottakkaran Sooppy Nisar Department of Mathematics Mohi-ud-Din Islamic UniversityNerian Sharif12080Pakistan Department of Mathematics and Statistics Hazara UniversityMansehra21120Pakistan Department of Mathematics Faculty of SciencesHITEC UniversityTaxila Cantt47070Pakistan University of Multan Multan66000Pakistan Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh City72915Vietnam Department of Mathematics Cankaya UniversityAnkaraTurkey Institute of Space Sciences Magurele077125Romania Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan Department of Mathematics College of Arts and SciencesPrince Sattam bin Abdulaziz UniversityWadi Aldawaser11991Saudi Arabia

Thermal transport investigation in colloidal suspensions is taking a significant research *** applications of these fluids are found in various industries,engineering,aerodynamics,mechanical engineering and medical sciences etc.A huge amount of thermal transport is essential in the operation of various industrial production *** is a fact that conventional liquids have lower thermal transport characteristics as compared to colloidal *** colloidal suspensions have high thermal performance due to the thermophysical attributes of the nanoparticles and the host ***,researchers focused on the analysis of the heat transport in nanofluids under diverse *** such,the colloidal analysis of H_(2)O composed byγAl_(2)O_(3)and Al_(2)O_(3)is conducted over an elastic *** governing flow models ofγAl_(2)O_(3)/H_(2)O and Al_(2)O_(3)/H_(2)O is reduced in the dimensionless form by adopting the described similarity *** colloidal models are handled by implementing the suitable numerical technique and provided the results for the velocity,temperature and local thermal performance rate against the multiple flow *** the presented results,it is shown that the velocity of Al_(2)O_(3)–H_(2)O increases promptly against a high Reynolds number and it decreases for high-volume *** significant contribution of the volumetric fraction is examined for thermal enhancement of *** temperature of Al_(2)O_(3)–H_(2)O andγAl_(2)O_(3)–H_(2)O significantly increases against a higherϕ.Most importantly,the analysis shows thatγAl_(2)O_(3)–H_(2)O has a high local thermal performance rate compared to Al_(2)O_(3)–H_(2)***,it is concluded thatγAl_(2)O_(3)–H_(2)O is a better heat transfer fluid and is suitable for industrial and technological uses.

关键词： Thermal performance Al_(2)O_(3)andγAl_(2)O_(3)nanomaterials thermophysical attributes of nanomaterials stretching cylinder suction/blowing numerical scheme nusselt number

Effect of displacement on resistance and capacitance of polyaniline film

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Chinese Physics B 2011年第4期20卷 204-208页

作者： Khasan Sanginovich Karimov Muhammad Tariq saeed Fazal Ahmad Khalid syed Abdul Moiz GIK Institute of Engineering Sciences and Technology Physical Technical Institute of Academy of Sciences Semiconductor Nano Processing Lab (SNPL) Department of Chemical and Material EngineeringHanyang University

This paper investigates the properties of displacement sensors based on polyaniline （PANI） films. About 1 wt% of PANI micropowder is mixed and stirred in a solution of 90 wt% water and 10 wt% alcohol at room temperature. The films of PANI axe deposited from solution by drop-casting on Ag electrodes, which are preliminary deposited on glass substrates. The thicknesses of the PANI films are in the range of 20 μm-80 μm. A displacement sensor with polyaniline film as an active material is designed and fabricated. The investigations showed that, on average, the AC resistance of the sensor decreases by 2 times and the capacitance accordingly increases by 1.6 times as the displacement changes in the range of 0 mm-0.5 mm. The polyaniline is the only active material of the displacement sensor. The resistance and capacitance of the PANI changes under the pressure of spring and elastic rubber, and this pressure is created by the downward movement of the micrometer.

关键词： polyaniline displacement sensor resistance and capacitance

Effects of viscous dissipation and slip velocity on two-dimensional and axisymmetric squeezing flow of Cu-water and Cu-kerosene nanofluids

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Propulsion and Power Research 2015年第1期4卷 40-49页

作者： Umar Khan Naveed Ahmed Mir Asadullah syed tauseef Mohyud-din Department of Mathematics Faculty of SciencesHITEC UniversityTaxila CanttPakistan COMSATS Institute of Information Technology University RoadAbbottabadPakistan

Squeezing flow of nanofluids has been taken into account under the effects of viscous dissipation and velocity *** types of base fluids are used to study the behavior of Copper nanoparticles between parallel *** ordinary differential equations governing the flow are obtained by imposing similarity transformations on conservation *** equations are solved by using an efficient analytical technique the variation of parameters method(VPM).Influences of nanoparticle concentration and different emerging parameters on flow profiles are presented graphically coupled with comprehensive discussions.A numerical solution is also sought for the sake of *** of different parameters on skin friction coefficient and Nusselt number is also discussed.

关键词： Squeezing flow Nanofluids Variation of parameters method(VPM) Velocity slip Numerical solution

Novel Analytical Thermal Performance Rate Analysis in ZnO-SAE50 Nanolubricant: Nonlinear Mathematical Model

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Computers, Materials & Continua 2021年第4期67卷 477-489页

作者： Adnan Abbasi Umar Khan Naveed Ahmed syed tauseef Mohyud-Din Ilyas Khan El-Sayed M.Sherif Department of Mathematics Mohi-ud-Din Islamic UniversityNerian SharifAJ&K12080Pakistan Department of Mathematics and Statistics Hazara UniversityMansehra21120Pakistan Department of Mathematics HITEC UniversityTaxilaCantt47070Pakistan University of Multan Multan66000Pakistan Department of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh City72915Vietnam Department of Mechanical Engineering College of EngineeringKing Saud UniversityAl-Riyadh11421Saudi Arabia Department of Physical Chemistry Electrochemistry and Corrosion LaboratoryNational Research CentreCairo12622Egypt

The investigation of local thermal transport rate in the nanolubricants is *** lubricants are broadly used in environmental pollution,mechanical engineering and in the paint industry due to high thermal performance ***,thermal transport in ZnO-SAE50 nanolubricant under the impacts of heat generation/absorption is *** colloidal suspension is flowing between parallel stretching disks in which the lower disk is positioned at z=0 and upper disk apart from distance *** problem is transformed in dimensionless version via described similarity *** the next stage,an analytical technique(VPM)is implemented for the solution *** graphical results against multiple flow parameters were furnished over the region of interest and explained *** is imperative to mention that the results are plotted for ZnO-SAE50 and conventional liquid as ***,rapid motion of the fluid is perceived against high Reynolds andγ*** wall shear stresses at the upper end rises for multiple Reynolds andγwhile;decrement is detected at the lower *** significant contribution of an internal heat source is noted for thermal performance rate at the upper ***,the local heat transport rate declines at the lower *** altering Reynolds number,prompt heat transfer rate is gained at the upper disk and increasing behavior of the local heat transport rate is slow at the lower *** the study,it is concluded that the nanolubricants have high thermal ***,such fluids are reliable to use in above stated areas.

关键词： Zno-SAE50 nanolubricant thermal performance local heat transport numerical algorithm skin friction

Evaluation of state and community/private forests in Punjab, Pakistan using geospatial data and related techniques

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Forest Ecosystems 2015年第2期2卷 155-167页

作者： Naeem Shahzad Urooj saeed Hammad Gilani Sajid Rashid Ahmad Irfan Ashraf syed Muhammad Irteza World Wide Fund for Nature (WWF) Institute of Geology University of the Punjab International Centre for Integrated Mountain Development (ICIMOD) Department of Land Surveying and Geo-Informatics Hong Kong Polytechnic University

Background： Forests are fundamental in maintaining water supplies, providing economic goods, mitigating climate change, and maintaining biodiversity, thus providing many of the world＇s poorest with income, food and medicine. Too often, forested lands are treated as ＂wastelands＂ or ＂free＂ and are easily cleared for agricultural and infrastructure expansion. Methods： In this paper, the sustainability of two forest ecosystems （state and community/private owned） was evaluated using SPOT-5 satellite images of 2005 and 2011. This study was conducted in a sub-watershed area covering 468 km2, of which 201 km2 is managed by the state and 267 km2 by community/private ownership in the Murree Galliat region of Punjab Province of Pakistan. A participatory approach was adopted for the delineation and demarcation of forest boundaries. The Geographic Object-Based Image Analysis （GEOBIA） technique was used for identification and mapping of ten Land Cover （LC） features. Results： The results show that between the years 2005 to 2011, a total of 55 km2 （24 km2 in state-owned forest and 31 km2 in community/private forest） was converted from forest to non-forest. The conclusion is that conservation is more effective in state-owned forests than in the community/private forests. Conclusions： These findings may help to mobilize community awareness and identify effective initiatives for improved management of community/private forest land for other regions of Pakistan.

关键词： Forest management SPOT-5 satellite images State and community/private owned forests Murree Galliat Pakistan

General Solution for Unsteady Natural Convection Flow with Heat and Mass in the Presence of Wall Slip and Ramped Wall Temperature

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Communications in Theoretical Physics 2019年第6期71卷 647-657页

作者： saeed Ullah Jan Sami Ul Haq syed Inayat Ali Shah Ilyas Khan Muhammad Atif Khan Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh CityVietnam Department of Mathematics Islamia College UniversityPeshawar25000Pakistan Department of Mathematics Kohat University of Science&TechnologyKohat26000Pakistan

This work is focused on the effect of heat and mass transfer with unsteady natural convection flow of viscous fluid along with ramped wall temperature under the assumption of the slip wall condition at the boundary. Analytical solutions are obtained by using Laplace transformation to the non-dimensional set of governing equations containing velocity, temperature and concentration. Moreover, the expression for skin-friction is derived by differentiating the analytical solutions of fluid velocity. Numerical tables for Skin-friction, Sherwood number and Nusselt-number are examined. For the physical aspects of the flow, we use various values of involved physical parameters such as Prandtl number(Pr), slip parameter(η), Schmidt number(Sc), buoyancy ratio parameter(N), Sherwood number(Sh), and time(t). Additionally, the general solutions are plotted graphically and a comprehensive theoretical section of numerical discussions is included.

关键词： slip boundary condition heat and mass transfer skin-friction

Antibiotic resistance and cagA gene correlation:A looming crisis of Helicobacter pylori

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World Journal of Gastroenterology 2012年第18期18卷 2245-2252页

作者： Adnan Khan Amber Farooqui Hamid Manzoor syed Shakeel Akhtar Muhammad saeed Quraishy Shahana Urooj Kazmi Immunology and Infectious Diseases Research Laboratory Department of MicrobiologyUniversity of KarachiUniversity RoadKarachi 75270Pakistan Division of Immunology International Institute of Infection and ImmunityShantou University Medical College22 Xinling RoadShantouGuangdong 515041China Department of Surgery Civil HospitalKarachi 74200Pakistan Hamid ManzoorSyed Shakeel AkhtarMuhammad Saeed QuraishyDepartment of MedicineCivil HospitalKarachi 74200Pakistan

AIM:To determine antibiotic resistance of Helicobacter pylori(***) in Pakistan and its correlation with host and pathogen associated ***:A total of 178 strains of *** were isolated from gastric biopsies of dyspeptic *** patterns against first and second-line antibiotics were determined and trends of resistance were analyzed in relation to the sampling period,gastric conditions and cagA gene *** effect of cagA gene on the acquisition of resistance was investigated by mutant selection ***:The observations showed that monoresistant strains were prevalent with rates of 89% for metronidazole,36% for clarithromycin,37% for amoxicillin,18.5% for ofloxacin and 12% for ***,clarithromycin resistance was on the rise from 2005 to 2008(32% vs 38%,P = 0.004) and it is significantly observed in non ulcerative dyspeptic patients compared to gastritis,gastric ulcer and duodenal ulcer cases(53% vs 20%,18% and 19%,P = 0.000).On the contrary,metronidazole and ofloxacin resistance were more common in gastritis and gastric ulcer *** analysis and frequencies of resistant mutants in vitro correlated with the absence of cagA gene with metronidazole and ofloxacin ***:The study confirms the alarming levels of antibiotic resistance associated with the degree of gastric inflammation and cagA gene carriage in *** strains.

关键词：抗生素耐药性幽门螺旋杆菌基因突变幽门螺杆菌氧氟沙星消化不良克拉霉素甲硝唑

磁辐射3D非稳态流动体系的传热强化:Al和γ-Al2O3纳米粒子的对比研究（英文）

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Journal of Central South University 2019年第5期26卷 1233-1249页

作者： Naveed AHMED ADNAN Umar KHAN syed Zulfiqar Ali ZAIDI Imran FAISAL syed tauseef MOHYUD-DIN Department of Mathematics Faculty of SciencesHITEC UniversityTaxila CanttPakistan Department of Mathematics Mohi-ud-Din Islamic UniversityNerian SharifAzad Jammu and KashmirPakistan Department of Mathematics and Statistics Hazara UniversityMansehraPakistan Department of Mathematics COMSATS University IslamabadAbbottabad CampusPakistan Department of Mathematics Taibah UniversityMedinaSaudi Arabia

本文研究了水和乙二醇基纳米流体的胶体性质。考虑了洛伦兹力和热辐射的影响,通过相似变化,完成了控制方程的无量纲转化。然后,应用龙格-库塔法,对流动模型的非线性特性进行数值分析,对有关流速、温度、流线、等温线等流动参数的特性进... 详细信息

本文研究了水和乙二醇基纳米流体的胶体性质。考虑了洛伦兹力和热辐射的影响,通过相似变化,完成了控制方程的无量纲转化。然后,应用龙格-库塔法,对流动模型的非线性特性进行数值分析,对有关流速、温度、流线、等温线等流动参数的特性进行图解分析。结果表明,洛伦兹力有利于旋转速度,不利于其他旋转参数。体积分数和热辐射参数对Al和γ-Al2O3纳米流体的温度有正相关强化作用。此外,对于较高的旋转参数,研究其反向流动问题。与文献结果进行了比较,结果显示具有较高的吻合度。旋转有利于流体的流动速度,辐射流体越多,流体温度越高,而且体积分数的增加提高了热导率和电导率。

关键词：传统流体铝和铝氧化物磁场热辐射 Runge-Kutta方案剪切应力局部热传递速率