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Transport m.chanism.in chem.cally reactive hybrid nanofluid flow containing gyrotactic m.cro-organism. over a curved oscillatory surface

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Applied m.them.tics and m.chanics(English Edition) 2025年第1期46卷 177-192页

作者： m.naveed m.Im.AN T.ASGHAR Z.ABBAS Departm.nt of m.them.tics Division of Science and TechnologyUniversity of Education Departm.nt of m.them.tics The Islamia University of Bahawalpur

This paper exam.nes the transport analysis, including both heat transfer and m.ss transfer, in hybrid nanofluid flow containing gyrotactic m.croorganism. towards a curved oscillatory surface. The influence of m.gnetic fields is also inspected in term. of their physical characteristics. To depict the phenom.na of transport, m.dified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and hom.geneous chem.cal reactions are also incorporated. Utilizing a curvilinear coordinate system. the flow problem.is form.lated as partial differential equations(PDEs)for m.m.ntum. concentration, m.croorganism.field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the hom.topy analysis m.thod(HAm..The effects of significant flow param.ters on the pressure and m.croorganism.fields, velocity, oscillation velocity, concentration, and tem.erature distributions are shown via graphs. Furtherm.re, the variations in skin friction, m.ss transfer rate, heat transfer rate, and local m.tile num.er due to different involved param.ters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and tem.erature fields are enhanced as the values of the solid volum. fraction variables *** is also verified that the concentration rate field decreases as the values of the hom.geneous reaction strength param.ter and the radius of curvature param.ter increase, and it increases with the Schm.dt num.er and the heterogeneous reaction strength *** outcom.s show a favorable response of the m.tile num.er to advanced values of the Peclet num.er, the Schm.dt num.er, the m.croorganism.difference param.ter, and the bio-convective Lewis num.er.

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Alternative Strategy for Developm.nt of Dielectric Calcium.Copper Titanate‑Based Electrolytes for Low‑Tem.erature Solid Oxide Fuel Cells

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Nano-m.cro Letters 2025年第1期17卷 310-332页

作者： Sajid Rauf m.ham.ad Bilal Hanif Zuhra Tayyab m.tej Veis m.KYousaf Shah naveed m.shtaq Dm.try m.dvedev Yibin Tian Chen Xia m.rtin m.tola Bin Zhu College of m.chatronics and Control Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China Departm.nt of Inorganic Chem.stry Faculty of Natural SciencesComenius University BratislavaIlkovicova684215 BratislavaSlovakia Energy Storage Joint Research Center School of Energy and EnvironmentSoutheast UniversityNanjing 210096People’s Republic of China Hydrogen Energy Laboratory Ural Federal University620002 EkaterinburgRussia Laboratory of Electrochem.cal Devices Based on Solid Oxide Proton Electrolytes Institute of High Temperature Electrochemistry620066 EkaterinburgRussia School of m.croelectronics Hubei UniversityWuhan 430062People’s Republic of China

The developm.nt of low-tem.erature solid oxide fuel cells(LT-SOFCs)is of significant im.ortance for realizing the widespread application of *** has stim.lated a substantial m.terials research effort in developing high oxide-ion conductivity in the electrolyte layer of *** this context,for the first tim.,a dielectric m.terial,CaCu_(3)Ti_(4)O_(12)(CCTO)is designed for LT-SOFCs electrolyte application in this *** individual CCTO and its heterostructure m.terials with a p-type Ni_(0.8)Co_(0.15)Al_(0.05)LiO_(2−δ)(NCAL)sem.conductor are evaluated as alternative electrolytes in LT-SOFC at 450–550℃.The single cell with the individual CCTO electrolyte exhibits a power output of approxim.tely 263 m. cm.(-2) and an open-circuit voltage(OCV)of 0.95 V at 550℃,while the cell with the CCTO–NCAL heterostructure electrolyte capably delivers an im.roved power output of approxim.tely 605 m. cm.(-2) along with a higher OCV over 1.0 V,which indicates the introduction of high hole-conducting NCAL into the CCTO could enhance the cell perform.nce rather than inducing any potential short-circuiting *** is found that these prom.sing outcom.s are due to the interplay of the dielectric m.terial,its structure,and overall properties that led to im.rove electrochem.cal m.chanism.in CCTO–***,density functional theory calculations provide the detailed inform.tion about the electronic and structural properties of the CCTO and NCAL and their heterostructure CCTO–*** study thus provides a new approach for developing new advanced electrolytes for LT-SOFCs.

关键词： LT-SOFCs Dielectric CaCu_(3)Ti_(4)O_(12) Sem.conductor Ni_(0.8)Co_(0.15)Al_(0.05)LiO_(2−δ) Ionic conductivity Heterostructure electrolyte

Novel Analytical Therm.l Perform.nce Rate Analysis in ZnO-SAE50 Nanolubricant: Nonlinear m.them.tical m.del

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Com.uters, m.terials & Continua 2021年第4期67卷 477-489页

作者： Adnan Abbasi umar Khan naveed Ahm.d Syed Tauseef m.hyud-Din Ilyas Khan El-Sayed m.Sherif Departm.nt of m.them.tics Mohi-ud-Din Islamic UniversityNerian SharifAJ&K12080Pakistan Departm.nt of m.them.tics and Statistics Hazara UniversityMansehra21120Pakistan Departm.nt of m.them.tics HITEC UniversityTaxilaCantt47070Pakistan University of m.ltan Multan66000Pakistan Departm.nt of m.them.tics and Statistics Ton Duc Thang UniversityHo Chi Minh City72915Vietnam Departm.nt of m.chanical Engineering College of EngineeringKing Saud UniversityAl-Riyadh11421Saudi Arabia Departm.nt of Physical Chem.stry Electrochemistry and Corrosion LaboratoryNational Research CentreCairo12622Egypt

The investigation of local therm.l transport rate in the nanolubricants is *** lubricants are broadly used in environm.ntal pollution,m.chanical engineering and in the paint industry due to high therm.l perform.nce ***,therm.l transport in ZnO-SAE50 nanolubricant under the im.acts 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 transform.d in dim.nsionless version via described sim.larity *** the next stage,an analytical technique(VPm.is im.lem.nted for the solution *** graphical results against m.ltiple flow param.ters were furnished over the region of interest and explained *** is im.erative to m.ntion that the results are plotted for ZnO-SAE50 and conventional liquid as ***,rapid m.tion of the fluid is perceived against high Reynolds andγ*** wall shear stresses at the upper end rises for m.ltiple Reynolds andγwhile;decrem.nt is detected at the lower *** significant contribution of an internal heat source is noted for therm.l perform.nce rate at the upper ***,the local heat transport rate declines at the lower *** altering Reynolds num.er,prom.t 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 therm.l ***,such fluids are reliable to use in above stated areas.

关键词： Zno-SAE50 nanolubricant therm.l perform.nce local heat transport num.rical algorithm skin friction

Antioxidant and lipoxygenase inhibitory properties of a novel flavonoid from.Pistacia chinensis Bunge and its m.lecular docking analysis

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Traditional m.dicine Research 2025年第2期10卷 30-36页

作者： Abdur Rauf Zuneera Akram.naveed m.ham.ad Najla Alm.soud Taghrid Saad Alom.r Saim. Naz Abdul Wadood Chandni Hayat m.rcello Iriti Departm.nt of Chem.stry University of SwabiAmbar 23561Pakistan Departm.nt of Pharm.cology Faculty of Pharmaceutical SciencesBaqai Medical UniversityKarachi 74600Pakistan Departm.nt of Pharm.cy Abdul Wali Khan University MardanMardan 23200Pakistan Departm.nt of Chem.stry College of SciencePrincess Nourah bint Abdulrahman UniversityRiyadh 11671Saudi Arabia Departm.nt of Biotechnology BKUC-Bacha Khan University CharsaddaCharsadda 24620Pakistan Departm.nt of Biochem.stry Abdul Wali Khan University MardanMardan 23200Pakistan Departm.nt of Biom.dical Surgical and Dental SciencesUniversity of MilanMilan 20129Italy National Interuniversity Consortium.of m.terials Science and Technology(INSTm. Firenze 50121Italy

Background:Pistacia chinensis Bunge has been traditionally used to m.nage various conditions,including asthm.,pain,inflam.ation,hepatoprotection,and *** study was conducted to investigate the antioxidant and anti-lipoxygenase(LOX)properties of the isolated com.ound 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chrom.n-4-one from.Pistacia ***:LOX assay and antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl(DPPH)assay were *** docking studies were conducted using a m.lecular operating ***:The LOX assay revealed significant inhibitory effects at 0.2µm.concentration,with an IC50 value of 37.80µ*** antioxidant effect dem.nstrated dose-dependency across 5 to 100µg/m. concentrations,reaching 93.09%at 100µg/m.,com.arable to ascorbic acid’s 95.43%*** docking studies highlighted strong interactions with the lipoxygenase enzym.,presenting an excellent docking score of-10.98 kcal/***:These findings provide valuable insights into Pistacia chinensis’chem.cal com.onents and biological effects,reinforcing its traditional m.dicinal applications.

关键词： Pistacia chinensis Bunge antioxidant DPPH assay antilipoxygenase docking analysis

Validated m.thod for the Sim.ltaneous Determ.nation of Lisinopril, Pravastatin, Atorvastatin and Rosuvastatin in API, Form.lations and Hum.n Serum.by RP-HPLC

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Chinese Journal of Chem.stry 2011年第6期29卷 1216-1220页

作者： Najm., Sultana Arayne, m. Saeed Safila, naveed United Biotechnologies Karachi-75290 Pakistan Faculty of Pharm.cy Hamdard University Karachi-74600 Pakistan

Lisinopril is found to be useful in hypertension and statins as cholesterol lowering drug. Present work was designed for the sim.ltaneous determ.nation of lisinopril in presence of pravastatin, atorvastatin, and rosuvastatin using RP-HPLC m.thod. A Purospher star C 18 （5 μm. 25 × 0.46 cm. colum. was used with m.bile phase consisting of acetonitrile ： water （60 ： 40 V/V, pH 3.0） with flow rate of 1.0 m.om.n-1 and the quantitative evaluation was perform.d at 225 nm. The retention tim. of lisinopril was 2.0 m.n and for pravastatin, rosuvastatin and atorvastatin was found to be 3.1, 4.5 and 8.3 m.n respectively. Suitability of this m.thod for the quantitative determ.nation of the drugs was proved by validation in accordance with the requirem.nts laid down by International Conference on Harm.nization （ICH） guidelines. Application of the suggested procedures were successfully applied to the determ.nation of these com.ounds in active pharm.ceutical ingredient and in pharm.ceutical preparations, with high percentage of recovery, good accuracy and precision.

关键词： Lisinopril statins m.thod validation HPLC determ.nation

Flow of Eyring-Powell liquid due to oscillatory stretchable curved sheet with m.dified Fourier and Fick’s m.del

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Applied m.them.tics and m.chanics(English Edition) 2021年第10期42卷 1461-1478页

作者： m.Im.AN Z.ABBAS m.naveed Departm.nt of m.them.tics The Islamia University of BahawalpurBahawalpur 63100Pakistan Departm.nt of m.them.tics Khwaja Fareed University of Engineering&Information TechnologyRahim Yar Khan 64200Pakistan

This study deals with the features of the m.ss and heat transport m.chanism.by adopting a m.dified version of Fourier and Fick’s m.del known as the CattaneoChristov double diffusive *** tim.-dependent m.gnetohydrodynam.c(m.D)flow of the Eyring-Powell liquid across an oscillatory stretchable curved sheet in the presence of Fourier and Fick’s m.del is *** acquired set of flow equations is transform.d into the form.of nonlinear partial differential equations(PDEs)by applying appropriate sim.larity variables.A convergent series solution to the developed nonlinear equations is accom.lished with the help of an analytical approach,i.e.,the hom.topy analysis m.thod(HAm..The consequences of diverse param.ters,including the dim.nsionless EyringPowell liquid param.ter,the radius of curvature,the Schm.dt/Prandtl num.ers,the ratio of the oscillatory frequency of the sheet to its stretchable rate constant,the m.ss and therm.l relaxation variables involved in the flow,and the heat and m.ss properties,are displayed through graphs and *** is noted from.this study that the am.litude of the pressure distribution rises for the high param.tric values of the Eyring-Powell param.ter.

关键词： oscillatory stretchable curved surface m.gnetohydrodynam.c(m.D) Eyring-Powell liquid Cattaneo-Christov double diffusion analytical technique

Therm.-diffusion effects on m.D stagnation point flow towards a stretching sheet in a nanofuid

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Propulsion and Power Research 2014年第3期3卷 151-158页

作者： umar Khan naveed Ahm.d Sheikh Irfan Ullah Khan Syed Taluseef m.hyud-din Deparm.nt of m.them.tics Faculty of SciencesHITEC UniversityTarila CantPakistan COm.A IS Institute of Inform.tion Technology University RoadAbbottabadPakistan

Therm.diffusion effects on stagnation point flow of a nanofuid towards a stretching surface with applied m.gnetic field is *** transform. are applied to reduce the equations that govem.the flow to a system.of nonlinear ordinary differential ***-K utta-Fehlberg m.thod is applied to solve the sy *** are com.ared with existing solutions that are special cases to our *** graphical analysis is carried out to study the effects of different em.rging param.ters such as stretching ratio A,m.g netic infuence param.ter m.Prandtl num.er Pr,Lewis num.er Le,Brownian m.tion param.ter Nb,therm.phoresis param.ter Nr,nanofluid Lewis num.er Ln,m.dified Dufour param.ter Nd and Dufour solutal num.er Ld coupled with com.rehensive *** effects of local Nusselt num.er,local Sherwood num.er and nanofluid Sherwood num.er are also discussed.

关键词： Nanofluid Stretching sheet Therm.diffusion Num.rical solution Nusselt num.er Sherwood num.er Nanofluid Sherwood num.er

Developm.nt and testing of a detailed kinetic m.chanism.of natural gas com.ustion in internal com.ustion engine

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Journal of Natural Gas Chem.stry 2010年第2期19卷 97-106页

作者： m.m.nsha A.R.Saleem. Badar m.Ghauri naveed Ram.an Departm.nt of Chem.cal Engineering University of Engineering & TechnologyLahore 5457Pakistan Institute of Space Technology Islamabad 44000Pakistan

A detailed chem.cal m.chanism.to describe the com.ustion of natural gas in internal com.ustion （IC） engine has been developed,which is consisting of 233 reversible reactions and 79 *** m.chanism.accounts for the oxidation of m.thane,ethane,propane and *** has been tested using IC engine m.del of CHEm.IN 4.1.1 and experim.ntal *** perform.nce of the proposed m.chanism.was evaluated at various equivalence ratios （φ=0.6 to φ=1.3）,initial reactor conditions （Tini=500 to 3500 ℃; Pini=1.0 to 10 atm. and engine speed （2000-7000 rpm..The proposed kinetic m.chanism.shows good concordances with GRI3.0 m.chanism.especially in the prediction of tem.erature,pressure and m.jor product species （H2O,CO2） profiles at stoichiom.tric conditions （φ=1.0）.The experim.ntal results of m.asured cylinder pressure,species fractions were also in agreem.nt with sim.lation results derived from.the proposed kinetic *** proposed m.chanism.successfully predicts the form.tion of gaseous pollutants （CO,NO,NO2,NH3） in the engine *** there are som. discrepancies am.ng each sim.lation profile,the proposed detailed m.chanism.is good to represent the com.ustion of natural gas in IC engine.

关键词： natural gas detailed m.chanism equivalence ratio pollutants em.ssion com.ustion

Glow Discharge Plasm. Nitriding of AISI 304 Stainless Steel

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Plasm. Science and Technology 2007年第4期9卷 463-468页

作者： A.QAYYUm.m.A.naveed S.ZEB G.m.RTAZA m.ZAKAULLAH National Tokam.k Fusion Program IslamabadPakistan Departm.nt of Physics Quaid-i-Azam University45320 IslamabadPakistan Salam.Chair in Physics Government College University54000 LahorePakistan

Glow discharge plasm. nitriding of AISI 304 austenitic stainless steel has been carried out for different processing tim. under optim.m.discharge conditions established by spectroscopic analysis. The treated sam.les were analysed by X-ray diffraction （XRD） to explore the changes induced in the crystallographic structure. The XRD pattern confirm.d the form.tion of an expanded austenite phase （TN） owing to incorporation of nitrogen as an interstitial solid solution in the iron lattice. A Vickers m.crohardness tester was used to evaluate the surface hardness as a function of indentation depth （μm.. The results showed clear evidence of surface changes with substantial increase in surface hardness.

关键词： optical diagnostics plasm. nitriding austenitic stainless steel