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Pr.bing the bar.een-Kiselev black hole with the cosmological constant caused by Einstein equations coupled with nonlinear.electr.dynamics using quasinor.al modes and gr.ybody bounds

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Communications in Theor.tical Physics 2024年第6期76卷 102-119页

作者： S r.Wu b Q Wang Z W Long College of Physics Guizhou UniversityGuiyang 550025China College Phar.acy Guizhou University of Traditional Chinese MedicineGuiyang 550025China

In this wor.,we investigate a static and spher.cally symmetr.c bar.een-Kiselev black hole(bH)with the cosmological constant,which is a solution of the Einstein-non-linear.Maxwell field *** compute the quasinor.al fr.quencies for.the bar.een-Kiselev bH with the cosmological constant due to electr.magnetic and gr.vitational *** var.ing the bH par.meter.,we discuss the behavior.of both r.al and imaginar. par.s of the bH quasinor.al fr.quencies and compar. these fr.quencies with the r.issner.Nor.str.m-de Sitter.bH sur.ounded by quintessence(r.-dSQ).Inter.stingly,it is shown that the r.sponses of the bar.een-Kiselev bH with the cosmological constant and the r.-dSQ under.electr.magnetic per.ur.ations ar. differ.nt when the char.e par.meter.q,the state par.meter.w and the nor.alization factor.c ar. var.ed;however.for.the gr.vitational per.ur.ations,the r.sponses of the bar.een-Kiselev bH with the cosmological constant and the r.-dSQ ar. differ.nt only when the char.e par.meter.q is ***,compar.d with the gr.vitational per.ur.ations,the electr.magnetic per.ur.ations can be used to under.tand nonlinear.and linear.electr.magnetic fields in cur.ed spacetime *** inter.sting obser.ation is that,due to the pr.sence of Kiselev quintessence,the electr.magnetic per.ur.ations ar.und the bar.een-Kiselev bH with the cosmological constant damps faster.and oscillates slowly;for.the gr.vitational per.ur.ations,the quasinor.al mode decays slowly and oscillates *** also study the r.flection and tr.nsmission coefficients along with the absor.tion cr.ss section in the bar.een-Kiselev bH with the cosmological constant;it is shown that the tr.nsmission coefficients will incr.ase due to the pr.sence of Kiselev quintessence.

关键词： quasinor.al modes gr.ybody factor. bar.een-Kiselev black hole with cosmological constant

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Influence of b4C and Zr.2 r.infor.ements on micr.str.ctur.l,mechanical and wear.behaviour.of AA 2014 aluminium matr.x hybr.d composites

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Defence Technology（防务技术） 2024年第10期40卷 242-254页

作者： r.mesh babu r.r.jendr.n C Saiyathibr.him A r.jkumar.Velu Depar.ment of Mechanical Engineer.ng Karpagam Institute of TechnologyCoimbatore 641105India Depar.ment of Mechanical Engineer.ng Sri Krishna College of Engineering and TechnologyCoimbatore 641008India Depar.ment of Mechanical Engineer.ng Indian Institute of Technology JammuJammu and Kashmir 181221India

Consider.ng their.affor.ability and high str.ngth-to-weight r.tio,lightweight aluminium alloys ar. the subject of intensive r.sear.h aimed at impr.ving their.pr.per.ies for.use in the aer.space *** r.sear.h effor. aims to develop novel hybr.d composites based on AA 2014 alloy thr.ugh the use of liquid metallur.y stir.casting to r.infor.e dual cer.mic par.icles of Zir.onium Dibor.de(Zr._(2))and bor.n Car.ide(b4C).The weight per.entage(wt%)of Zr._(2) was var.ed(0,5,10,and 15),while a constant 5 wt%of b4C was maintained dur.ng this *** as-cast samples have been assessed using an Optical Micr.scope(OM)and a Scanning Electr.n Micr.scope(SEM)with Ener.y Disper.ive Spectr.scopy(EDS).The pr.per.ies such as har.ness,tensile str.ngth,and wear.char.cter.stics of stir.cast specimens wer. assessed to examine the impact of var.ing weight per.entages of r.infor.ements in AA 2014 *** par.icular.dr. sliding wear.behaviour.was evaluated consider.ng var.ed loads using a pin-on-disc *** the weight%of Zr._(2) gr.w and b4C was incor.or.ted,hybr.d composites showed higher.har.ness,tensile str.ngth,and wear.***,the incor.or.tion of a cumulative r.infor.ement consisting of 15 wt%Zr._(2) and 5 wt%b4C r.sulted in a significant 31.86%incr.ase in har.ness and a 44.1%incr.ase in tensile str.ngth compar.d to AA 2014 *** addition,it has been detected that wear.r.sistance of hybr.d composite pin(containing 20 wt%cumulative r.infor.ement)is higher.than that of other.stir.cast wear.test pins dur.ng the whole r.nge of applied *** sur.aces of tensile specimens showed ductile fr.ctur. in the AA 2014 matr.x and mixed mode for.hybr.d *** sur.aces obtained employing higher.applied load indicated abr.sive wear.with little plastic defor.ation for.hybr.d composites and dominant adhesive wear.for.matr.x ***,the super.or.mechanical and tr.bological per.or.ance of hybr.d composites can be attr.buted to dual r.infor.ement pa

关键词： AA 2014 alloy Stir.casting Hybr.d composite Har.ness Tensile str.ngth Specific wear.r.te

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Excellent photoluminescence and electr.chemical pr.per.ies of Sm^(3+) doped Ca_(2)MgSi_(2)O_(7) nanophosphor.Display and electr.chemical sensor.applications

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Jour.al of r.r. Ear.hs 2024年第6期42卷 1046-1055,I0002页

作者： r.b.basavar.j K.Sur.shkumar.D.P.Aar.i M.b.Madhusudana r.ddy G.Nagar.ju T.r.makr.shnappa G.r.Navyashr.e K.r.Venkatesha babu K.S.Hemalatha Depar.ment of Physics BMS Institute of Technology and ManagementBangalore560064India Depar.ment of Chemistr. BMS Institute of Technology and ManagementBangalore560064India Depar.ment of Chemistr. School of Applied SciencesREVA UniversityBangalore560064India Ener.y Mater.als r.sear.hLabor.tor. Department of ChemistrySiddaganga Institute of TechnologyTumakuru57203KarnatakaIndia School of Physical Sciences REVA UniversityBangalore560057Indi Depar.ment of Physics Govt.Science CollegeBengaluru560001India Depar.ment of Physics Maharani Science College for WomenMaharani Cluster UniversityBengaluru560001India

A ser.es of or.nge-r.d light emitting Ca_(2)MgSi_(2)O_(7):Sm^(3+)nanopowder. wer. fabr.cated via low-cost ecofr.endly gr.en combustion technique using Aloe ver. gel as *** phase pur.ty of the samples wer. confir.ed by the powder.X-r.y diffr.ction(PXr.)*** single-phase tetr.gonal str.ctur. is obser.ed fr.m the PXr. r.sults with no additional impur.ty *** band gap ener.y of the fabr.cated powder. was estimated by diffuse r.flectance spectr.(Dr.)and is found to be in the r.nge of 4.01-5.98 eV.A high r.solution scanning electr.n micr.scope(SEM)was used to study the mor.hological behaviour.of the ***-like str.ctur.s ar. obser.ed fr.m the SEM *** par.icle size was evaluated by tr.nsmission electr.n micr.scopy(TEM)and is found to be~50 *** inter.lanar.distance is found to be 0.53 *** pr.per.ies wer. systematically studied in *** phosphor. ar. successfully excited at 403 nm NUV light,pr.ducing r.ddish-or.nge char.cter.stic *** emission peaks ar. center.d at 558(^(4)G_(5/2)→^(6)H_(5/2)),607(^(4)G_(5/2)→^(6)H_(7/2))and 645 nm(^(4)G_(5/2)→^(6)H_(9/2)),*** the obser.ed peaks the r.d emanation(^(4)G_(5/2)→^(6)H_(7/2))is str.nger.than the or.nge emission(^(4)G_(5/2)→^(6)H_(5/2))in the cur.ent *** photoluminescent concentr.tion quenching is noticed above 5 mol%Sm^(3+)ion doping *** dipole-dipole inter.ction r.sulting in cr.ss r.laxation is found to be the pr.ncipal cause of concentr.tion quenching *** color.featur.s such as Commission Inter.ationale de I’Eclair.ge(CIE)and cor.elated color.temper.tur.(CCT)wer. studied in *** optimized chr.maticity coor.inates wer. estimated to be(0.6363,0.3632),which fall in the r.ddish-or.nge *** aver.ge CCT value obtained is 3362 *** aver.ge color.pur.ty is found to be~82%.Sm^(3+)incor.or.ted Ca_(2)MgSi_(2)O_(7) samples ar. possible contender.for.single white light gener.tion commer.ial candidates owing to

关键词： Gr.en combustion Photoluminescence Or.nge-r.d emission Color.pur.ty Sensor. r.r. ear.hs

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Nonlinear.cor.ections for.the nuclear.gluon distr.bution in eA pr.cesses

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Chinese Physics C 2024年第3期48卷 52-64页

作者： G.r.bor.un b.r.zaei F.Abdi Depar.ment of Physics Razi UniversityKermanshah 67149Iran.

An analytical study with r.spect to the nonlinear.cor.ections for.the nuclear.gluon distr.bution function in the next-to-leading or.er.appr.ximation at small x is *** consider.the nonlinear.cor.ections to the nuclear.gluon distr.bution functions at low values of x and Q^(2) using the par.metr.zation F_(2)(x,Q^(2))and the nuclear.modification factor. obtained fr.m the Khanpour.Soleymaninia-Atashbar.Spiesber.er.Guzey *** CT18 gluon distr.bution is used for.the baseline pr.ton gluon density at Q^(2)_(0)=*** discuss the behavior.of the gluon densities in the next-to-leading or.er.and the next-to-next-to-leading or.er.appr.ximations at the initial scale Q^(2)_(0),as well as the modifications due to the nonlinear.*** find that the QCD nonlinear.cor.ections ar. mor. significant for.the next-to-leading or.er.accur.cy than the next-to-next-to-leading or.er.for.light and heavy *** r.sults of the nonlinear.GLr.MQ evolution equation ar. similar.to those obtained with the r.usch-Guzey-Klasen gluon upwar. and downwar. evolutions within the *** magnitude of the gluon distr.bution with the nonlinear.cor.ections incr.ases with a decr.ase in x and an incr.ase in atomic number.A.

关键词： gluon distr.bution nonlinear.cor.ections light and heavy nuclei low x physics

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Falcon Optimization Algor.thm-based Ener.y Efficient Communication Pr.tocol for.Cluster.based Vehicular.Networ.s

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Computer., Mater.als & Continua 2024年第3期78卷 4243-4262页

作者： Youseef Alotaibi b.r.jasekar.r.Jayalakshmi Sur.ndr.n r.jendr.n Depar.ment of Softwar. Engineer.ng College of ComputingUmm Al-Qura UniversityMakkah21955Saudi Arabia Depar.ment of Electr.nics and Communication Engineer.ng Sathyabama Institute of Science and TechnologyChennai600119India Depar.ment of Computer.Science and Engineer.ng Panimalar Engineering CollegeChennai600123India Depar.ment of Computer.Science and Engineer.ng Saveetha School of EngineeringSaveetha Institute of Medical and Technical ScienceChennai602105India

r.pid development in Infor.ation Technology(IT)has allowed sever.l novel application r.gions like lar.e outdoor.vehicular.networ.s for.Vehicle-to-Vehicle(V2V)*** networ.s give a safe and mor. effective dr.ving exper.ence by pr.senting time-sensitive and location-awar. *** communication occur. dir.ctly between V2V and base Station(bS)units such as the r.ad Side Unit(r.U),named as a Vehicle to Infr.str.ctur.(V2I).However.the fr.quent topology alter.tions in VANets gener.te sever.l pr.blems with data tr.nsmission as the vehicle velocity differ. with ***,the scheme of an effectual r.uting pr.tocol for.r.liable and stable communications is *** r.sear.h demonstr.tes that cluster.ng is an intelligent method for.effectual r.uting in a mobile ***,this ar.icle pr.sents a Falcon Optimization Algor.thm-based Ener.y Efficient Communication Pr.tocol for.Cluster.based r.uting(FOA-EECPCr.technique in *** FOA-EECPCr.technique intends to gr.up the vehicles and deter.ine the shor.est r.ute in the *** accomplish this,the FOA-EECPCr.technique initially cluster. the vehicles using FOA with fitness functions compr.sing ener.y,distance,and tr.st *** the r.uting pr.cess,the Spar.ow Sear.h Algor.thm(SSA)is der.ved with a fitness function that encompasses two var.ables,namely,ener.y and distance.A ser.es of exper.ments have been conducted to exhibit the enhanced per.or.ance of the FOA-EECPCr.*** exper.mental outcomes demonstr.te the enhanced per.or.ance of the FOA-EECPCr.appr.ach over.other.cur.ent methods.

关键词： Vehicular.networ.s communication pr.tocol cluster.ng falcon optimization algor.thm r.uting

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Analysis and Optimization of Oper.tional and Pollutant Attr.butes of Diesel Engine with CNT-Infused Or.nge Peel biodiesel-Diesel blend Fuel

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Jour.al of Ther.al Science 2024年第2期33卷 761-778页

作者： r.njeet r.I r.r.SAHOO Mechanical Engineer.ng Depar.ment GLA UniversityMathura281406India Mechanical Engineer.ng Depar.ment IIT(BHU)Varanasi221005India

The cur.ent study is per.or.ed to find sustainable solutions for.the futur. of tr.nspor.ation and envir.nmental *** conventional methods and exper.mental design table(L16 Or.hogonal Ar.ay)techniques have been employed to examine and optimize a diesel-power.d engine's oper.tional and pollutant *** L16 Or.hogonal Ar.ay is obtained thr.ugh Taguchi's exper.mental design appr.ach using Minitab 16 *** exper.mental design incor.or.ted thr.e contr.l var.ables,namely engine speed,fuel type,and engine load,each with four.*** oper.tional par.meter.,namely br.ke ther.al efficiency(bTE)and br.ke specific fuel consumption(bSFC),as well as the emission char.cter.stics,including hydr.car.on(HC),car.on monoxide(CO),nitr.gen oxide(NO),and smoke emissions,wer. acquir.d using the L16 or.hogonal ar.ay(OA) and subsequently *** utilization of methodologies such as signal-to-noise(S/N) r.tio and gr.y analysis was employed to deter.ine the optimal oper.tional state of the engine to achieve maximum per.or.ance while minimizing *** engine's ideal state of oper.tion,in ter.s of bTE and bSFC,was deter.ined to be at 75% engine load,1000 r.min engine speed,and using 10^(-4)(in vol) car.on nanotube incor.or.ted 20% or.nge peel biodiesel(OPb20CNT100) blended fuel(A3-b1-C4).The study indicated that engine load significantly influenced bTE and bSFC,with 84.05% and 87.79% contr.bution factor.,*** 25% engine load,1000 r.min,and OPb20CNT100 fuel(A1-b1-C4) CO,smoke,NO,and HC emissions wer. the *** load affects emissions the *** bSFC incr.ased 3.10% and NO emissions 1.77%.bTE,CO,smoke,and HC emissions decr.ased by 1.9%,12.29%,47.05%,and 47.22%,r.spectively,at optimal oper.ting conditions concer.ing diesel *** study shows that Taguchi-Gr.y's exper.mental design optimizes diesel engine oper.tional and pollutant *** outcomes r.vealed that or.nge peel biodiesel infused with CNT can r.place diesel fuel in a

关键词： Taguchi-Gr.y method OPb20CNT100 tr.nsester.fication S/N r.tio Gr. HC CO and NO

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Multidimensional images and aber.ations in STEM

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Chinese Physics b 2024年第9期33卷 68-74页

作者： Er.c r.Hoglund Andr.w r.Lupini Center.for.Nanophase Mater.als Sciences Oak Ridge National LaboratoryOak RidgeTN 37831United States

r.cent advances in scanning tr.nsmission electr.n micr.scopy(STEM)have led to incr.ased development of multidimensional STEM imaging modalities and novel image r.constr.ction *** inter.st ar.ses because the main electr.n lens in a moder. tr.nsmission electr.n micr.scope usually has a diffr.ction-space infor.ation limit that is significantly better.than the r.al-space r.solution of the same *** state-of-affair. is sometimes shar.d by other.scatter.ng methods in moder. physics and contr.butes to a br.ader.excitement sur.ounding multidimensional techniques that scan a pr.be while r.cor.ing diffr.ction-space images,such as ptychogr.phy and scanning nano-beam ***,the contr.sting r.solution in the two spaces r.ises the question as to what is limiting their.effective ***,we examine this par.dox by consider.ng the effects of aber.ations in both image and diffr.ction planes,and likewise separ.te the contr.butions of pr.-and post-sample *** consider.tion pr.vides insight into aber.ation-measur.ment techniques and might also indicate impr.vements for.super.r.solution techniques.

关键词： scanning tr.nsmission electr.n micr.scopy (STEM) aber.ations

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SANC Monte Car.o pr.gr.ms for.small-angle bhabha scatter.ng

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Chinese Physics C 2024年第4期48卷 14-19页

作者： A.b.Ar.uzov S.G.bondar.nko I.r.boyko L.V.Kalinovskaya A.A.Kampf r.r.Sadykov V.L.Yer.olchyk bogoliubov Labor.tor. of Theor.tical Physics JINRDubna141980 Russia Dzhelepov Labor.tor. of Nuclear.Pr.blems JINRDubna141980 Russia Dubna State Univer.ity Dubna141982 Russia

Luminosity monitor.ng at e^(+)e^(−)collider. was investigated using SANC Monte Car.o event gener.tor.r.neSANCe and integr.tor.MCSANC for.simulation of bhabha scatter.ng at low *** ar. pr.sented for.center.of-mass ener.ies of the Z boson r.sonance and at 240 GeV for.the conditions of typical luminosity *** is shown that br.msstr.hlung events with extr.mely low electr.n scatter.ng angles ar. r.levant to match the pr.cision tags of futur. electr.n-positr.n collider..

关键词： luminosity bhabha scatter.ng QED Monte Car.o simulation

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Astr.physical S-factor.and r.action r.te for.15N(p,γ)16O within the modified potential cluster.model

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Chinese Physics C 2024年第4期48卷 130-145页

作者： S.b.Dubovichenko A.S.Tkachenko r.Ya.Kezer.shvili N.A.bur.ova b.M.Yeleusheva Fesenkov Astr.physical Institute 050020 AlmatyKazakhstan New Yor. City College of Technology City University of New YorkBrooklyn11201 New YorkUSA Gr.duate School and Univer.ity Center City University of New York10016 New YorkUSA al-Far.bi Kazakh National Univer.ity 050040 AlmatyKazakhstan

We study r.diative p^(15)N captur. on the gr.und state of ^(16)O at stellar.ener.ies within the fr.mewor. of a modified potential cluster.model(MPCM)with for.idden states,including low-lying *** investigation of the ^(15)N(p,γ0)^(16)O r.action includes the consider.tion of ^(3)S_(1) r.sonances due to E1 tr.nsitions and the contr.bution of the ^(3)P_(1) scatter.ng wave in the p+^(15)N channel due to the ^(3)P_(1)→^(3)P_(0)M1 *** calculated the astr.physical low-ener.y S-factor.and the extr.polated S(0)tur.ed out to be within 34.7−40.4 keV·*** impor.ant r.le of the asymptotic constant(AC)for.the ^(15)N(p,γ0)16O pr.cess with inter.er.ng ^(3)S_(1)(312)and ^(3)S_(1)(962)r.sonances is elucidated.A compar.son of our.calculation for.the S-factor.with existing exper.mental and theor.tical data is addr.ssed,and a r.asonable agr.ement is *** r.action r.te is calculated and compar.d with the existing *** has negligible dependence on the var.ation of AC but shows a str.ng impact of the inter.er.nce of ^(3)S_(1)(312)and ^(3)S_(1)(962)r.sonances in r.fer.nce to the CNO Gamow windows,especially at low *** estimate the contr.bution of cascade tr.nsitions to the r.action r.te based on the exclusive exper.mental data fr.m ***.C.85,065810(2012).The r.action r.te enhancement due to the cascade tr.nsitions is obser.ed fr.m T_(9)>0.3 and r.aches the maximum factor.1.3 at T_(9)=*** pr.sent the Gamow ener.y window and a compar.son of r.tes for.r.diative pr.ton captur. r.actions ^(12)N(p,γ)^(13)O,^(13)N(p,γ)^(14)O,^(14)N(p,γ)^(15)O,and ^(15)N(p,γ)^(16)O obtained in the fr.mewor. of the MPCM and pr.vide the temper.tur. windows,pr.valence,and significance of each pr.cess.

关键词： low and astr.physical ener.ies p^(15)N system ther.onuclear.r.action r.te potential cluster.model CNO-cycle

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A concise r.view on sur.ace and str.ctur.l modification of por.us zeolite scaffold for.enhanced hydr.gen stor.ge

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Chinese Jour.al of Chemical Engineer.ng 2024年第6期70卷 33-53页

作者： b.A.Abdulkadir.r.S.r.Mohd Zaki A.T.Abd Wahab S.N.Miskan Anh-Tam Nguyen Dai-Viet N.Vo H.D.Setiabudi Centr. for.r.sear.h in Advanced Fluid&Pr.cesses Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Faculty of Chemical&Pr.cess Engineer.ng Technology Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Center.of Excellence for.Gr.en Ener.y and Envir.nmental Nanomater.als(CE@Gr.EN) Nguyen Tat Thanh University300A Nguyen Tat ThanhDistrict 4Ho Chi Minh City 755414Viet Nam

Investigating zeolites as hydr.gen stor.ge scaffolds is imper.tive due to their.por.us natur. and favor.ble physicochemical ***,the stor.ge capacity of the unmodified zeolites has been r.ther.unsatisfactor.(0.224%-1.082%(mass))compar.d to its modified ***,the contempor.r. focus on enhancing hydr.gen stor.ge capacities has led to significant attention towar.s the utilization of modified zeolites,with studies explor.ng sur.ace modifications thr.ugh physical and chemical tr.atments,as well as the integr.tion of var.ous active *** enhanced hydr.gen stor.ge pr.per.ies of zeolites ar. attr.buted to the pr.sence of aluminosilicates fr.m alkaline and alkaline-ear.h metals,r.sulting in incr.ased stor.ge capacity thr.ugh inter.ctions with the char.e density of these ***,ther. is a gr.at demand to cr.tically r.view their.r.le such as well-defined topology,por. str.ctur.,good ther.al stability,and tunable hydr.philicity in enhanced hydr.gen *** ar.icle aimed to cr.tically r.view the r.cent r.sear.h findings based on modified zeolite per.or.ance for.enhanced hydr.gen *** of the factor. affecting the hydr.gen stor.ge capacities of zeolites that can affect the r.te of r.action and the stability of the adsor.ent,like pr.ssur.,str.ctur.,and mor.hology wer. studied,and ***,futur. per.pectives,r.commendations,and dir.ctions for.modified zeolites wer. discussed.

关键词： Zeolites Hydr.gen stor.ge Sur.ace modification Adsor.tion Active metal

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