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t.ansport.mechanism in chemically react.ve hybrid nanofluid flow cont.ining gyrot.ct.c micro-organisms over a curved oscillat.ry surface

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Applied mat.emat.cs and mechanics(English Edit.on) 2025年第1期46卷 177-192页

作者： m.NAVEED m.ImRAN t.ASGHAR Z.ABBAS Depart.ent.of mat.emat.cs Division of Science and TechnologyUniversity of Education Depart.ent.of mat.emat.cs The Islamia University of Bahawalpur

t.is paper examines t.e t.ansport.analysis, including bot. heat.t.ansfer and mass t.ansfer, in hybrid nanofluid flow cont.ining gyrot.ct.c microorganisms t.wards a curved oscillat.ry surface. t.e influence of magnet.c fields is also inspect.d in t.rms of t.eir physical charact.rist.cs. t. depict.t.e phenomena of t.ansport. modified versions of bot. Fick's and Fourier's laws are used. addit.onally, t.e charact.rist.cs of bot. het.rogeneous and homogeneous chemical react.ons are also incorporat.d. Ut.lizing a curvilinear coordinat. syst.m, t.e flow problem is formulat.d as part.al different.al equat.ons(PDEs)for moment.m, concent.at.on, microorganism field, and energy. An analyt.cal solut.on t. t.e obt.ined flow equat.ons is achieved ut.lizing t.e homot.py analysis met.od(ham).t.e effect. of significant.flow paramet.rs on t.e pressure and microorganism fields, velocit., oscillat.on velocit., concent.at.on, and t.mperat.re dist.ibut.ons are shown via graphs. Furt.ermore, t.e variat.ons in skin frict.on, mass t.ansfer rat., heat.t.ansfer rat., and local mot.le number due t. different.involved paramet.rs are present.d in t.bles and are analyzed in det.il. Graphical result. indicat. t.at.t.e curves of velocit. and t.mperat.re fields are enhanced as t.e values of t.e solid volume fract.on variables *** is also verified t.at.t.e concent.at.on rat. field decreases as t.e values of t.e homogeneous react.on st.engt. paramet.r and t.e radius of curvat.re paramet.r increase, and it.increases wit. t.e Schmidt.number and t.e het.rogeneous react.on st.engt. *** out.omes show a favorable response of t.e mot.le number t. advanced values of t.e Peclet.number, t.e Schmidt.number, t.e microorganism difference paramet.r, and t.e bio-convect.ve Lewis number.

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Evaluat.on of pot.nt.al RNA-int.rference-t.rget.genes t. cont.ol cot.on mealybug, Phenacoccus solenopsis （Hemipt.ra： Pseudococcuidae）

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Insect.Science 2018年第5期25卷 778-786页

作者： Arif m. Khan m.ham.ad Ashfaq Azhar A. Khan m.ham.ad t. naseem.shahid m.nsoor Nat.onal Inst.t.t. for Biot.chnology and Genet.c Engineering Faisalabad Pakistan Depart.ent.of Biot.chnology University of Sargodha Sargodha Pakistan Biodiversit. Inst.t.t. of Ont.rio University of Guelph Guelph Ontario Canada College of Agricult.re Bahauddin Zakariya University Bahadur Campus Layyah Pakistan

RNA int.rference （RNAi） of vit.l insect.genes is a pot.nt.al t.ol for t.rget.d pest.cont.ol. However, select.on of t.e right.t.rget.genes is a challenge because t.e RNAi efficacy is known t. vary among insect.species. Cot.on mealybug, Phenacoccus solenopsis, is a phloem-feeding economically import.nt.crop pest. We evaluat.d t.e RNAi of 2 vit.l genes, Bursicon （PsBur） and V-At.ase （Ps V-At.ase） as pot.nt.al t.rget. in P. solenopsis for it. cont.ol. PCR fragment. of PsBur and PsV-At.ase were amplified using cDNA synt.esized from t.e t.t.l RNA. t.e PCR amplicons were cloned int. Pot.t. virus X （PVX） t. develop recombinant.PVX for t.e inoculat.on ofNicot.ana t.bacum plant. for bioassays wit. healt.y P. solenopsis. Reverse-t.anscript.on-polymerase chain react.on （Rt. PCR） was used t. validat. t.e expression oft.ansgenes in t.e recombinant.PVX-inoculat.d plant. （t.eat.d）, and suppression of t.e t.rget.genes in t.e mealybugs exposed t. t.em. t.e Rt.PCR confirmed t.e expression of t.ansgenes in t.e t.eat.d plant.. mealybug individuals on t.eat.d plant. eit.er died or showed physical deformit.es. Furt.er, t.e populat.on of mealybug was significant.y reduced by feeding on N. t.bacum expressing RNAi t.iggers against.PsBur and Ps V-A t.ase. t.e result. conclude t.at.RNAi is act.vat.d in P. solenopsis by feeding on N. t.bacum expressing RNAi t.iggering element. of PsBur and Ps V-At.ase genes t.rough recombinant.PVX vect.r. Furt.er, V-At.ase and Bursicon genes are pot.nt.al t.rget. for RNAi-mediat.d cont.ol ofP. solenopsis.

关键词： insect.cont.ol phloem feeders Pot.t. virus X Rt.PCR t.ansgenic crops

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Origin of Ferromagnet.sm in Al and Ni Co-doped ZnO Based DmS mat.rials

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Chinese Physics Let.ers 2012年第10期29卷 155-157页

作者： murt.za Saleem Saadat.A.Siddiqi shahid m.Ramay shahid At.q Shahzad naseem Cent.e for Solid St.t. Physics University of the PunjabQuaid-e-Azam CampusLahore 54590Pakistan 2Interdisciplinary Research Centre in Biomedical MaterialsCOMSATS Institute of Information TechnologyDefence RoadOff Raiwind RoadLahorePakistan 3Department of Chemical EngineeringCollege of EngineeringKing Saud UniversityP.O.Box 800Riyadh 11421Saudi Arabia

Zn0.95Ni0.05O and Zn0.90Ni0.05Al0.05O composit.ons of nanocryst.llit.s are synt.esised using t.e well recognised aut.-combust.on *** x-ray diffract.on pat.erns demonst.at. t.e phase pure charact.rist.c wurt.it.-t.pe cryst.l st.uct.re wit. space group P63mc in bot. t.e *** element.l incorporat.on of Ni and Al cont.nt. int. t.e ZnO st.uct.re is confirmed by energy dispersive x-ray *** micrographs of scanning elect.on microscopy show an approximat. ordered *** elect.ical resist.vit. is observed t. decrease wit. t.e rising t.mperat.re,depict.ng t.e charact.rist.c semiconduct.r behaviour of t.e *** lower values of resist.vit. and ferromagnet.c int.ract.ons in t.e Al-doped sample correspond t. an increase of carrier's *** is observed t.at.t.e carrier mediat.d mechanism is mainly responsible for ferromagnet.sm in ZnO-based dilut.d magnet.c semiconduct.rs.

关键词： resist.vit. dilut.d Origin

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Large scale silver nanowires net.ork fabricat.d by meV hydrogen (H＋) ion beam irradiat.on

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Chinese Physics B 2016年第4期25卷 268-273页

作者： Honey S naseem S Ishaq A maaza m Bhat.i m t.Wan D Cent.r of Excellence in Solid St.t. Physics University of the Punjab Lahore Pakistan Nat.onal Cent.r for Physics Quaid-i-Azam University Islamabad 44000 Pakistan UNESCO-UNISA Africa Chair in Nanosciences/Nanot.chnology College of Graduate Studies University of South Africa Muckleneuk ridge P. O. Box 392 Pretoria South Africa Nanosciences African Net.ork (NANOAFNEt. iThemba LABS National Research Foundation Old Faure road P. O. Box 722 Somerset West 7129 South Africa Depart.ent.of Physics Bahauddin Zakariya University Multan 60800 Pakistan School of mat.rials Science and Engineering Shanghai University Shanghai 201900 China

A random t.o-dimensional large scale nano-net.ork of silver nanowires （Ag-NWs） is fabricat.d by meV hydrogen （H＋） ion beam irradiat.on. Ag-NWs are irradiat.d under H＋ ion beam at.different.ion fluences at.room t.mperat.re. t.e Ag-NW net.ork is fabricat.d by H＋ ion beam-induced welding of Ag-NWs at.int.rsect.ng posit.ons. H＋ ion beam induced welding is confirmed by t.ansmission elect.on microscopy （t.m） and scanning elect.on microscopy （SEm）. moreover, t.e st.uct.re of Ag NWs remains st.ble under H＋ ion beam, and net.orks are opt.cally t.ansparent. morphology also remains st.ble under H＋ ion beam irradiat.on. No slicings or cut.ings of Ag-NWs are observed under meV H＋ ion beam irradiat.on. t.e result. exhibit.t.at.t.e format.on of Ag-NW net.ork proceeds t.rough t.ree st.ps： ion beam induced t.ermal spikes lead t. t.e local heat.ng of Ag-NWs, t.e format.on of simple junct.ons on small scale, and t.e format.on of a large scale net.ork. t.is observat.on is useful for using Ag-NWs based devices in upper space where prot.ns are abandoned in an energy range from meV t. GeV. t.is high-qualit. Ag-NW net.ork can also be used as a t.ansparent.elect.ode for opt.elect.onics devices.

关键词： Ag nanowires H+ ion irradiat.on nanowelding large scale nano-net.ork opt.cal propert.es

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melt.ng heat.t.ansfer in Cu-wat.r and Ag-wat.r nanofluids flow wit. homogeneous-het.rogeneous react.ons

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Applied mat.emat.cs and mechanics(English Edit.on) 2019年第4期40卷 465-480页

作者： m.Imt.AZ F.shahid t.HAYAt.A.ALSAEDI Depart.ent.of mat.emat.cs University of Wah Depart.ent.of mat.emat.cs Quaid-i-Azam University Nonlinear Analysis and Applied mat.emat.cs (NAAm) Research Group Department of Mathematics King Abdulaziz University

t.is art.cle addresses melt.ng heat.t.ansfer in magnet.hydrodynamics(mHD)nanofluid flows by a rot.t.ng disk. t.e analysis is performed in Cu-wat.r and Ag-wat.r nanofluids. t.ermal radiat.on, viscous dissipat.on, and chemical react.ons impact. are added in t.e nanofluid model. Appropriat. t.ansformat.ons lead t. t.e nondimensionalized boundary layer equat.ons. Series solut.ons for t.e result.ng equat.ons are *** role of pert.nent.paramet.rs on t.e velocit., t.mperat.re, and concent.at.on is analyzed in t.e out.ut.. It.is revealed t.at.t.e larger melt.ng paramet.r enhances t.e velocit. profile while t.e t.mperat.re profile decreases. t.e surface drag force and heat.t.ansfer rat. are comput.d under t.e influence of pert.nent.paramet.rs. Furt.ermore, t.e homogeneous react.on paramet.r serves t. decrease t.e surface concent.at.on.

关键词： magnet.hydrodynamics(mHD) nanofluid st.et.hable rot.t.ng disk t.ermal radiat.on melt.ng heat t.ansfer homogeneous-het.rogeneous react.on

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St.uct.ral and magnet.c Propert.es of Chemically Synt.esized Pd-modified NiFe2O4 Nanopart.cles

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Chinese Journal of Chemical Physics 2016年第2期29卷 245-248,I0002页

作者： shahid Aat.q shahid m. Ramay Asif mahmood SairaRiaza Shahzad naseem 巴基斯坦旁遮普邦大学固体物理卓越中心拉合尔100190 沙特阿拉伯沙特国王大学理学院物理与天文学系利雅得11421 沙特阿拉伯沙特国王大学工程学院化学工程系利雅得11421

magnet.c nanopart.cles of NiFe2O4-Pd composit.s have been synt.esized using a simple, low cost. sol-gel aut.-combust.on met.od. As-prepared samples were sint.red at.800℃ for 6 h in order t. develop t.e cryst.lline phase. X-ray diffract.on confirmed t.e spinel st.uct.re of t.e ferrit. samples. St.uct.ral morphology and size of t.e nanopart.cles were evaluat.d using a field emission scanning elect.on microscope. magnet.c hyst.resis loops were obt.ined at.300 and 100 K using a physical propert.es measurement.syst.m. t.e value of sat.rat.on magnet.zat.on was observed t. decrease at.t.e t.mperat.res wit. t.e increase of Pd cont.nt. up t. 5% but.t.en a sudden rise in sat.rat.on magnet.zat.on was observed for t.e addit.on of 10% Pd in NiFe2O4.

关键词： magnet.c nanopart.cles Sol-gel aut.-combust.on Low t.mperat.re magnet.cpropert.

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Elect.onic and t.ermoelect.ic propert.es of alkali met.l-based perovskit.s CsYbF3 and RbYbF3

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Chinese Physics B 2020年第11期29卷 473-478页

作者： Q mahmood N A Noor t.Ghrib Nessrin A Kat.an Asif mahmood shahid m Ramay Basic and Applied Scient.fic Research Cent.r Imam Abdulrahman Bin Faisal UniversityP.O.Box 198231441DammamSaudi Arabia Depart.ent.of Physics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 198231441DammamSaudi Arabia Depart.ent.of Physics Riphah International UniversityLahorePakistan Depart.ent.of Physics Faculty of ScienceTaibah UniversityMedinaSaudi Arabia Chemical Engineering Depart.ent College of EngineeringKing Saud UniversityRiyadhSaudi Arabia Physics and Ast.onomy Depart.ent College of ScienceKing Saud University RiyadhRiyadhSaudi Arabia

t.e elect.onic and t.ermoelect.ic propert.es of alkali met.l-based fluorides CsYbF3 and RbYbF3 are st.died by using Wien2k and Bolt.t.aP *** st.uct.ral and t.ermodynamic st.bilit. of t.ese mat.rials are confirmed by t.lerance fact.r(0.94 and 0.99 for RbYbF3 and CsYbF3)and negat.ve format.on *** opt.mized lat.ice const.nt. and bulk moduli are consist.nt.wit. t.e result. report.d in t.e *** report.d band gap for RbYbF3 is 0.86 eV which decreases t. 0.83 eV by t.e replacement.of Cs wit. *** elect.ical and t.ermal conduct.vit.es along wit. Seebeck coefficient. decrease wit. t.mperat.re rising from 0 K t. 800 *** large values of t.ermoelect.ic paramet.rs for posit.ve chemical pot.nt.als show t.at.t.e charact.r is dominat.d by *** st.died mat.rials have figures of merit.0.82 and 0.81 at.room t.mperat.re respect.vely,for RbYbF3 and CsYbF3 and increase wit. t.mperat.re ***,t.e mat.rials under st.dy may have pot.nt.al applicat.on values in t.ermoelect.ic generat.rs and refrigerat.rs.

关键词： densit. funct.onal t.eory t.ermodynamic st.bilit. elect.ical conduct.vit. figure of merit

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Algebraic t.eat.ent.of t.e mIC-Kepler Syst.m in Spherical Coordinat.s

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Chinese Physics Let.ers 2007年第8期24卷 2173-2176页

作者： m. t. Chefrour Depart.ment.de Physique Institut des Sciences Centre Universitaire de Souk-Ahras Souk-Ahras Algerie

t.e mIC-Kepler syst.m is st.died via t.e milsht.in St.akhovenko variant.of t.e so（2,1） Lie algebra. Green＇s funct.on is const.uct.d in spherical coordinat.s, wit. t.e help of t.e Kust.anheimo St.efel variables and t.e generat.rs of t.e S0（2,1） group. t.e energy spect.um and t.e normalized wavefunct.ons of t.e bound st.t.s are obt.ined.

关键词： FIELD

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A Flexible Fin wit. Bio-Inspired St.ffness Profile and Geomet.y

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Journal of Bionic Engineering 2011年第4期8卷 418-428页

作者： t. Salumae m. Kruusmaa Cent.e for Biorobot.cs Tallinn University of Technology Akadeemia tee 15A-111 12618 Tallinn Estonia

Biological evidence suggest. t.at.fish use most.y ant.rior muscles for st.ady swimming while t.e caudal part.of t.e body is passive and, act.ng as a carrier of energy, t.ansfers t.e moment.m t. t.e surrounding wat.r. Inspired by t.ose findings we hypot.esize t.at.cert.in swimming pat.erns can be achieved wit.out.copying t.e dist.ibut.d act.at.on mechanism of fish but.rat.er using a single act.at.r at.t.e ant.rior part.t. creat. t.e t.avelling wave. t. t.st.t.e hypot.esis a pit.hing flexible fin made of silicone rubber and silicone foam was designed by copying t.e st.ffness dist.ibut.on profile and geomet.y of a rainbow t.out. t.e kinemat.cs of t.e fin was compared t. t.at.of a st.adily swimming t.out. Fin＇s propulsive wave lengt. and t.il-beat.am- plit.de were det.rmined while it.was act.at.d by a single servo mot.r. Result. showed t.at.t.e propulsive wave lengt. and t.il-beat.amplit.de of a st.adily swimming 50 cm rainbow t.out.was achieved wit. our biomimet.c fin while st.mulat.d using cert.in act.at.on paramet.rs （frequency 2.31 Hz and amplit.de 6.6 degrees）. t.e st.dy concluded t.at.fish-like swimming can be achieved by mimicking t.e st.ffness and geomet.y of a rainbow t.out.and disregarding t.e det.ils of t.e act.at.on mechanism.

关键词： biomimet.cs st.ffness profile fin robot.cs fish

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Effect. of Zr subst.t.t.on on st.uct.ral,morphological,and magnet.c propert.es of bismut. iron oxide phases

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Chinese Physics B 2017年第8期26卷 450-455页

作者： A Asif m Hassan S Riaz S naseem S S Hussain mat.rials Growt. and Simulat.on Laborat.ry Department of PhysicsUniversity of the PunjabLahore-54590Pakistan Cent.r of Excellence in Solid St.t. Physics University of the PunjabLahore-54590Pakistan

t.e present.st.dy involves co-precipit.t.on met.od t. grow un-doped and Zr-doped bismut. iron oxide wit. x_（Zr）=0.10–0.30. t.e molar solut.ons of ferric chloride（FeCl_3）, zirconyle chloride（ZrOCl_2）, and bismut. chloride（BiCl_3） are prepared in dist.lled wat.r, and are allowed t. react.wit. sodium hydroxide（Na OH）. t.e synt.esized powders are t.en convert.d int. pellet., which are sint.red at.500℃ for t.o hours in a muffle furnace. X-ray diffract.on（XRD） shows mult.-phase format.on in un-doped and Zr doped samples. Scanning elect.on microscope（SEm） depict. layered st.uct.re at.low Zr concent.at.on x_（Zr）= 0.10, while uniform surface wit. smaller grains and voids is observed at.x_（Zr）= 0.20, but.at.x_（Zr）= 0.30, cracks and voids become prominent. t.e ferromagnet.c nat.re of t.e un-doped sample is observed by vibrat.ng sample magnet.met.r（VSm）, while paramagnet.c behavior appears due t. Zr doping. t.e ferromagnet.sm in un-doped sample is lost.by Zr doping, which is due t. t.e format.on of addit.onal Fe–O–Zr bonds t.at.induce paramagnet.c behavior.

关键词： co-precipit.t.on mult.-phases ferromagnet.sm paramagnet.sm BiFeO3

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