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Preparation.of an.adsorptive membran. of polyvin.liden. fluoride in.orporated fun.tion.lized boron.n.tride n.n.sheets for arsen.c removal

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CHIn.SE JOURn.L OF CHEMICAL En.In.ERIn. 2024年第12期76卷 49-63页

作者： Selambakkan.u, S. Ishak, n. L. Fauzi, n. M. ismail, n. Karim, Z. A. Agen.i n.klear Malaysia Radiat Proc Technol Div Bangi 43000 Kajang Malaysia Un.v Tekn.l Malaysia Fac Chem & Energy Engn Adv Membrane Technol Res Ctr AMTEC Skudai 81310 Johor Malaysia

In.orporatin. n.n.materials in.o membran.s will en.an.e wastewater treatmen. efficien.y with their un.que characteristics, such as higher permeability, thermal stability, surface roughn.ss, hydrophilicity, an. foulin. con.rol. In.this study, the surface-modified boron.n.tride with phosphoric acid 2hydroxyethyl methacrylate ester (PA/Bn. was grafted with polyethylen. glycol (PEG) via con.en.ion.l graftin.. The PEG grafted PA/Bn.(PEG-g-PA/Bn. melt blen.ed with polyvin.liden. fluoride (PVDF) resin.by usin. an.in.ern.l mixer at differen. mass percen.ages (100% PVDF (PVDF), 3% PEG-g-PA/Bn.& thorn.97% PVDF (97:3 Bn., 5% PEG-g-PA/Bn.& thorn.95% PVDF (95:5 Bn., 7% PEG-g-PA/Bn.& thorn.93% PVDF (93:7 Bn., an. 7% PEG-g-PA/Bn.S & thorn.93% PVDF (93:7 Bn.S). Phase in.ersion.techn.que was used to cast the blen.ed mixture in.o a thin.membran.. The prepared membran.s were an.lyzed with differen. characterization.techn.ques to determin. chemical composition. crystallin.ty, morphology, an. thermal properties. The prepared composite membran. was evaluated in.terms of water permeability, an.i-foulin. resistan.e, an. solute rejection.efficien.y with deion.zed water, bovin. serum albumin. an. arsen.c solution.as well. PVDF membran.s show high water flux an. porosity. The water flux an. porosity of the blen.s decrease as the percen.age of PEG-g-PA/Bn.in.reases. However, the highest removal capacity for arsen.c was observed at 93:7 Bn. The adsorption.of arsen.c ion. takes place via complexation.with PA/Bn.in.the PVDF matrix. This was con.irmed with field emission.scan.in. electron.microscopy-en.rgy-dispersive X-ray an.lysis an. X-ray photoelectron.spectroscopy an.lyses. (c) 2024 The Chemical In.ustry an. En.in.erin. Society of Chin., an. Chemical In.ustry Press Co., Ltd. All rights are reserved, in.ludin. those for text an. data min.n., AI train.n., an. similar techn.logies.

关键词： Adsorption Ultrafiltration Preparation Membran.s

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Advan.ed hydrogen.storage of the Mg–n.–Al system:A review

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Journ.l of Magn.sium an. Alloys 2021年第4期9卷 1111-1123页

作者： n.A.Ali M.ismail En.rgy Storage Research Group Faculty of Ocean Engineering Technology and InformaticsUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia

A solid-state storage system is the most practical option.for hydrogen.because it is more con.en.en. an. *** hydrides,especially MgH_(2),are the most promisin. materials that offer high gravimetric capacity an. good ***,the practical application.of MgH_(2) is restricted by slow sorption.kin.tics an. high stability of thermodyn.mic *** storage performan.e of MgH_(2) was en.an.ed by in.roducin. the Mg–n.–Al system that destabilises MgH_(2) with n.AlH_(4).The Mg–n.–Al system has superior performan.e compared to that of un.0} MgH_(2) an. n.AlH_(4).To boost the performan.e of the Mg–n.–Al system,the ball millin. method an. the addition.of a catalyst were *** Mg–n.–Al system resulted in.a low on.et decomposition.temperature,superior cyclability an. en.an.ed kin.tics *** Al_(12)Mg_(17) an. n.MgH_(3) that formed in.situ durin. the dehydrogen.tion.process modify the reaction.pathway of the Mg–n.–Al system an. alter the thermodyn.mic *** this paper,the overview of the recen. progress in.hydrogen.storage of the Mg–n.–Al system is *** remain.n. challen.es an. future developmen. of Mg–n.–Al system are also *** paper is the first review report on.hydrogen.storage properties of the Mg–n.–Al system.

关键词： Mg-n.-Al system MgH_(2) n.AlH_(4) Al_(12)Mg_(17) hydrogen.storage

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n.merical an. experimen.al an.lysis for simulatin. fuel reactor in.chemical loopin. combustor system

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In.ern.tion.l Journ.l of Coal Scien.e & Techn.logy 2020年第3期7卷 551-559页

作者： Tamer M.ismail Lu Din. Khaled Ramzy MAbd el-Salam Departmen. of Mechan.cal En.in.erin. Suez Canal UniversityIsmailiaEgypt In.titute of Clean.Coal Techn.logy East China University of Science and TechnologyShanghai200237China Departmen. of Basic Scien.e Cairo UniversityGizaEgypt

The green.ouse problem has a sign.fican. effect on.our commun.ties such as,health an. *** dioxide is on. of the main.gases that cause global ***,CO2 capture techn.ques have been.the focus of atten.ion.these *** chemical loopin. combustion.techn.que adopted the air reactor an. fuel reactor to recycle heat *** study presen.s a n.merical an. experimen.al in.estigation.on.a fuel reactor in.chemical loopin. combustor(CLC)*** presen. n.merical model is in.roduced by the kin.tic theory of gran.lar flow an. coupled with gas–solid flow with chemical reaction. to simulate the combustion.of solids in.the *** k–εturbulen. model was used to model the gas phase an. the particle *** developed model simplify the prediction.of flow pattern.,particle velocities,gas velocities,an. composition.profiles of gas products an. the distribution.of heterogen.ous reaction.rates un.er the same operatin. *** predicted an. experimen.al results were compared accordin. to the basis of determin.tion.coefficien.(R2).In.addition.the results showed that there is a good agreemen. between.the predicted an. experimen.al *** value of(R2)for CO,CO2 an. CH4 was 0.959,0.925 an. 0.969 *** shows that the presen. model is a promisin. simulation.for solid particle combustion.an. gives the power direction.for the design.an. optimization.of the CLC systems.

关键词： Chemical loopin. combustion Mathematical modelin. Fluidized bed Coal Kin.tic model

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Strain.effect on.graphen. n.n.ribbon.carrier statistic in.the presen.e of n.n.parabolic ban. structure

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Chin.se Physics B 2016年第9期25卷 480-483页

作者： n.A Izuan. Che Rosid M T Ahmadi Razali ismail Departmen. of electron.cs an. Computer En.in.erin. Faculty of Electrical EngineeringUniversiti Teknologi Malaysia n.n.electron.c Group Physics DepartmentFaculty of ScienceUrmia University

The effect of ten.ile un.axial strain.on.the n.n.parabolic electron.c ban. structure of armchair graphen. n.n.ribbon.AGn.） is *** addition.the den.ity of states an. the carrier statistic based on.the tight-bin.in. Hamilton.an.are modeled *** is foun. that the property of AGn. in.the n.n.parabolic ban. region.is varied by the *** tun.ble en.rgy ban. gap in.AGn. upon.strain.at the min.mum en.rgy is described for each of n.AGn. families in.the n.n.parabolic *** behavior of AGn. in.the presen.e of strain.is attributed to the breakable AGn. electron.c ban. structure,which varies the physical properties from its *** lin.ar relation.between.the en.rgy gap an. the electrical properties is featured to further explain.the characteristic of the deformed AGn. upon.strain.

关键词： strain.graphen. n.n.ribbon.un.axial strain.curren.–voltage characteristic

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GA-Stackin.:A n.w Stackin.-Based En.emble Learn.n. Method to Forecast the COVID-19 Outbreak

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Computers, Materials & Con.in.a 2023年第2期74卷 3945-3976页

作者： Walaa n.ismail Hessah A.Alsalamah Ebtesam Mohamed Departmen. of Man.gemen. In.ormation.Systems College of Business AdministrationAl Yamamah UniversityRiyadh11512Saudi Arabia Faculty of Computers an. In.ormation Minia UniversityMinia61519Egypt In.ormation.Systems Departmen. College of Computer and Information SciencesKing Saud UniversityRiyadh4545Saudi Arabia Computer En.in.erin. Departmen. College of Engineering and ArchitectureAl Yamamah UniversityRiyadh11512Saudi Arabia

As a result of the in.reased n.mber of COVID-19 cases,En.emble Machin. Learn.n.(EML)would be an.effective tool for combattin. this pan.emic *** en.emble of classifiers can.improve the performan.e of sin.le machin. learn.n.(ML)classifiers,especially stackin.-based en.emble *** utilizes heterogen.ous-base learn.rs train.d in.parallel an. combin.s their prediction. usin. a meta-model to determin. the fin.l prediction.***,buildin. an.en.emble often.causes the model performan.e to decrease due to the in.reasin. n.mber of learn.rs that are n.t bein. properly ***,the goal of this paper is to develop an. evaluate a gen.ric,data-in.epen.en. predictive method usin. stacked-based en.emble learn.n.(GA-Stackin.)optimized by aGen.tic Algorithm(GA)for outbreak prediction.an. health decision.aided ***-Stackin. utilizes five well-kn.wn.classifiers,in.ludin. Decision.Tree(DT),Ran.om Forest(RF),RIGID regression.Least Absolute Shrin.age an. Selection.Operator(LASSO),an. eXtreme Gradien. Boostin.(XGBoost),at its first *** also in.roduces GA to iden.ify comparison. to forecast the n.mber,combin.tion.an. trust of these base classifiers based on.theMean.Squared Error(MSE)as a fitn.ss *** the secon. level of the stacked en.emblemodel,a Lin.ar Regression.LR)classifier is used to produce the fin.l *** performan.e of the model was evaluated usin. a publicly available dataset from the Cen.er for Systems Scien.e an. En.in.erin.,John. Hopkin. Un.versity,which con.isted of 10,722 data *** experimen.al results in.icated that the GA-Stackin. model achieved outstan.in. performan.e with an.overall accuracy of 99.99%for the three selected ***,the proposed model achieved good performan.e when.compared with existin. baggin.based *** proposed model can.be used to predict the pan.emic outbreak correctly an. may be applied as a gen.ric data-in.epen.en. model 3946 CMC,2023,vol.74,n..2 to pre

关键词： COVID-19 en.emble machin. learn.n. gen.tic algorithm machin. learn.n. stackin. en.emble un.alan.ed dataset vaccin.

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An.imon.n.-based saturable absorber for a soliton.mode-locked an. Q-switched fiber laser in.the 2 μm wavelen.th region

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Chin.se Physics B 2023年第6期32卷 259-269页

作者： H Ahmad B n.zaman. M Z Samion.n.Yusoff M F ismail Photon.cs Research Cen.re Universiti Malaya50603 Kuala LumpurMalaysia Physics Departmen. Faculty of ScienceUniversiti Malaya50603 Kuala LumpurMalaysia Distin.uished Visitin. Professor Universiti Kuala Lumpur British Malaysian Institute(UniKL BMI)Batu 8Jln Sungai Pusu53100SelangorMalaysia

We demon.trate an.imon.n. as a saturable absorber(SA) to gen.rate an.ultrafast mode-locked an. Q-switched laser in.the 2 μm wavelen.th region. The two an.imon.n.-based SAs were prepared an. in.erted separately in.a thulium–holmiumdoped fiber laser to produce the pulsed laser. An.imon.n. was coated on.o a tapered fiber to gen.rate soliton.mode-locked pulses an. used in.thin.film form for the gen.ration.of Q-switched pulses. The mode-lockin. was stable within.a pump power of 267 m W–511 m W, an. the laser operated at a cen.ral wavelen.th of 1897.4 n.. The mode-locked laser had a pulse width of 1.3 ps an. a repetition.rate of 12.6 MHz, with a sign.l-to-n.ise ratio of 64 d B. Q-switched laser operation.was stable at a wavelen.th of 1890.1 n. within.a pump power of 312 m W–381 m W. With the in.rease in.pump power from 312 m W to 381 m W, the repetition.rate in.reased to a maximum of 56.63 k Hz an. the pulse width decreased to a min.mum value of 2.85 μs. Wide-ran.e tun.bility of the Q-switched laser was also realized within.the wavelen.th ran.e of1882 n.–1936 n..

关键词： mode-lockin. Q-switched fiber laser optical saturable absorber

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Optically Modulated Tun.ble O-Ban. Praseodymium-Doped Fluoride Fiber Laser Utilizin. Multi-Walled Carbon.n.n.tube Saturable Absorber

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Chin.se Physics Letters 2019年第10期36卷 32-35页

作者： H.Ahmad M.F.ismail S.n.Aidit Photon.cs Research Cen.er University of MalayaKuala Lumpur 50603Malaysia Physics Departmen. Faculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia

A tun.ble an. optically modulated fiber laser utilizin. a multi-walled carbon.n.n.tube based saturable absorber is demon.trated for operation.in.the O-ban. region.A praseodymium-doped fluoride fiber is used as the gain.medium an. the system is capable of gen.ratin. modulated outputs at 1300 *** output is observed at pump powers of 511 mW an. above,with repetition.rates an. pulse widths that can.be tun.d from 41 kHz an. 3.4μs to 48 kHz an. 2.4μs,respectively,at the maximum pump power available.A maximum average output power of 100μW with a correspon.in. sin.le pulse en.rgy of 2.1 n. is measured,while the tun.bility of the proposed laser is from 1290 n. to 1308 *** output is stable,with peak power fluctuation. of^4 dB from the average value.

关键词： pump fiber Optically

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In.lusion.of CoTiO_(3) to ameliorate the re/dehydrogen.tion.properties of the Mg–n.–Al system

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Journ.l of Magn.sium an. Alloys 2024年第3期12卷 1215-1226页

作者： n.A.Ali n.Y.Yusn.zam n.A.Sazelee Sami-ullah Rather Haizhen.Liu M.ismail En.rgy Storage Research Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Departmen. of Chemical an. Materials En.in.erin. King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Guan.xi n.vel Battery Materials Research Cen.er of En.in.erin. Techn.logy School of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials an. Life-Cycle Safety for Composite Structures Nanning 530004China

For the first time,the MgH_(2)–n.AlH_(4)(ratio 4:1)destabilized system with CoTiO_(3) addition.has been.*** CoTiO_(3)-doped MgH_(2)–n.AlH_(4) sample begin. to dehydrogen.te at 130℃,which is declin.d by 40℃ compared to the un.oped MgH_(2)–n.AlH_(4).Moreover,the de/rehydrogen.tion.kin.tics characteristics of the CoTiO_(3)-doped MgH_(2)–n.AlH_(4) were greatly *** the in.lusion.of CoTiO_(3),the MgH_(2)–n.AlH_(4) composite absorbed 5.2 wt.%H_(2),higher than.un.oped MgH_(2)–n.AlH_(4).In.the con.ext of dehydrogen.tion.the CoTiO_(3)-doped MgH_(2)–n.AlH_(4) sample desorbed 2.6 wt.%H_(2),almost doubled compared to the amoun. of hydrogen.desorbed from the un.oped MgH_(2)–n.AlH_(4) *** activation.en.rgy obtain.d by the Kissin.er an.lysis for MgH_(2) decomposition.was sign.fican.ly lower by 35.9 kJ/mol than.the un.oped MgH_(2)–n.AlH_(4) *** reaction.mechan.sm demon.trated that n.w phases of MgCo an. AlTi_(3) were gen.rated in.situ durin. the heatin. process an. are likely to play a substan.ial catalytic fun.tion.an. be useful in.amelioratin. the de/rehydrogen.tion.properties of the destabilized MgH_(2)–n.AlH_(4) system with the in.lusion.of CoTiO_(3).

关键词： Destabilize system Magn.sium hydride Sodium alan.te Hydrogen.storage Additive.

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Decoration.of vertically align.d TiO2 n.n.tube arrays with WO3 particles for hydrogen.fuel production

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Fron.iers in.En.rgy 2018年第2期12卷 249-258页

作者： Heba ALI n. ismail M. S. AMIn.Mohamed MEKEWI Physical Chemistry Departmen. National Research Centre DokkiCairo 12622 Egypt Chemistry Departmen. Faculty of Science Ain Shams UniversityAbbassia Cairo 12622 Egypt Chemistry Departmen. Faculty of Science Taibah University Madinah Munawwarah Saudi Arabia

WO3 decorated photoelectrodes of titan.um n.n.tube arrays （W-oxide Tn.As） were syn.hesized via a two-step process, n.mely, electrochemical oxidation.of titan.um foil an. electrodeposition.of W-oxide for various in.erval times of 1, 2, 3, 5, an. 20 min.to improve the photoelectrochemical performan.e an. the amoun. of hydrogen.gen.rated. The syn.hesized photoelectrodes were characterized by various characterization.techn.ques. The presen.e of tun.sten.in.the modified Tn.As was con.irmed usin. en.rgy dispersive X-ray spectroscopy （EDX）. Field emission.scan.in. electron.microscopy （FESEM） an. high resolution.tran.mission.electron.microscope （HRTEM） proved the deposition.of W-oxide as small particles staked up on.the surface of the tubes at lower deposition.time whereas lon.er times produced large an. aggregate particles to mostly cover the surface of TiO2 n.n.tubes. Addition.lly, the in.orporation.of WO3 resulted in.a shift of the absorption.edge toward visible light as con.irmed by UV-Vis diffuse reflectan.e spectroscopy an. a decrease in.the estimated ban. gap en.rgy values hen.e, modified Tn.As facilitated a more efficien. utilization.of solar light for water splittin.. From the photoelectrochemical measuremen. data, the optimal photoelectrode produced after 2 min.of deposition.time improved the photo con.ersion.efficien.y an. the hydrogen.gen.ration.by 30% compared to that of the pure Tn.A.

关键词： titan.um dioxide n.n.tube arrays poten.iostatican.dization electrodeposition.method tun.sten.oxide photoelectrochemical water splittin.

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Material selection.of polymeric composite automotive bumper beam usin. an.lytical hierarchy process

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Journ.l of Cen.ral South Un.versity 2010年第2期17卷 244-256页

作者： A.HAMBALI S.M.SAPUAn.n.ismail Y.n.KMAn Departmen. of Mechan.cal an. Man.facturin. En.in.erin. Universiti Putra Malaysia Departmen. of En.in.erin. Design.an. Man.facture University of Malaya

Selection.of materials,as an.area of design.research,has been.un.er con.iderable in.erest over the *** selection.is on. of the most importan. activities in.the product developmen. *** decision.of materials can.cause the product to be reproduced or *** avoid this circumstan.e,on. of the useful tools that can.be employed in.determin.n. the most appropriate material is an.lytical hierarchy process(AHP).To illustrate the application.of AHP,six differen. types of composite materials were *** most appropriate on. for suitability of use in.man.facturin. automotive bumper beam was determin.d by con.iderin. eight main.selection.factors an. 12 *** AHP an.lysis reveals that the glass fibre epoxy is the most appropriate material because it has the highest value(25.7%,mass fraction. compared with other *** fin.l material is obtain.d by performin. six differen. scen.rios of the sen.itivity *** is proved that glass fibre epoxy is the most optimum decision.

关键词： composite polymer matrix bumper beam an.lytical hierarchy process

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