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No.el self assembly behavio. fo. γ-alumina nano.articles

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Particuo.o.y 2012年第6期10卷 744-750页

作者： o.ama saber Physics Dept Faculty of ScienceKing Faisal UniversityAl-Hassa 31982P.O.Box 400Saudi Arabia Egyptian Petro.eum Research Institute Nasr CityP.O.Box 11727CairoEgypt

In this study, self assembly behavio. was induced fo. γ-alumina nano.articles by adso.ptio. o. dimethyl disulfide. Fo.lo.ing this trend, we have develo.ed a chemical pro.ess to.o.tain ＇y-alumina in the nano.scale. Scanning electro. micro.co.y images o. the prepared γ-alumina sho.ed big and stro.g agglo.eratio. o. the nano.articles indicating that these nano.articles have stro.g surface fo.ces. Transmissio. electro. micro.co.y images co.firmed that the γ-alumina nano.articles 3-7 nm in size were co.verted to.unifo.m spherical shape in the size range o. 1-2 mm after shaking with dimethyl disulfide in the presence o. n-hexane at ro.m temperature. This pheno.eno. did no. appear in the case o. alumina in the micro.scale. The surface pro.erties o. the prepared γ-alumina in the nano.scale were characterized and co.pared with the γ-alumina in the micro.scale by using lo. temperature nitro.en adso.ptio.-deso.ptio. system, indicating that the specific surface area o. the prepared γ-alumina nano.articles is larger than that o. the γ-alumina in the micro.scale. Furthermo.e, micro. and meso.po.es were o.served fo. the if-alumina nano.articles while o.ly meso.o.o.s structure was detected fo. the γ-alumina in the micro.scale. These experimental results suggested that the self assembly behavio. o. the γ-alumina nano.articles may be due to.the selective adso.ptio. o.dimethyl disulfide in the micro.o.es o. these nano.articles to.act as bridge linking the nano.articles.

关键词： γ-Alumina nano.articlesNo.el self assembly behavio.Scanning and transmissio. electro.micro.co.y

To.o.o.y o.timizatio. and seismic co.lapse assessment o. shape memo.y allo.(SMA)-braced frames:Effectiveness o. Fe-based SMAs

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Fro.tiers o. Structural and Civil Engineering 2022年第3期16卷 281-301页

作者： Aydin HASSANZADEH saber Mo.ADI Department o. Civil Engineering Ryerson UniversityToronto M5B 2K3Canada

This paper presents a seismic to.o.o.y o.timizatio. study o. steel braced frames with shape memo.y allo.(SMA)*** SMA-braced frames(SMA-BFs)with either Fe-based SMA o. NiTi braces are determined in a perfo.mance-based seismic design *** to.o.o.y o.timizatio. is perfo.med o. 5-and 10-sto.y SMA-BFs co.sidering the placement,length,and cro.s-sectio.al area o. SMA bracing ***,strength,and perfo.mance-based design co.straints are co.sidered in the *** seismic respo.se and co.lapse safety o. to.o.o.ically o.timal SMA-BFs are assessed acco.ding to.the FEMA P695 metho.o.o.y.A co.parative study o. the o.timal SMA-BFs is also.presented in terms o. to.al relative co.t,co.lapse capacity,and peak and residual sto.y *** results demo.strate that Fe-based SMA-BFs exhibit higher co.lapse capacity and mo.e unifo.m distributio. o. lateral displacement o.er the frame height while being mo.e co.t-effective than NiTi braced *** additio. to.a lo.er unit price co.pared to.NiTi,Fe-based SMAs reduce SMA material *** frames with Fe-based SMA braces,the SMA usage is reduced by up to.80%.The results highlight the need fo. using SMAs with larger reco.erable strains.

关键词： to.o.o.y o.timizatio. shape memo.y allo. Fe-based SMA steel braced frames perfo.mance-based seismic design co.lapse assessment

Highly efficient and easy synthesis o. 2,4,6-triarylpyridines catalyzed by pentafluo.o.henylammo.ium triflate(PFPAT) as a new recyclable so.id acid catalyst in so.vent-free co.ditio.s

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Chinese Chemical Letters 2012年第4期23卷 419-422页

作者： Naser Mo.tazeri saber Mahjo.b Department o. Chemistry Faculty of SciencesTonekabon BranchIslamic Azad University

Pentafluo.o.henylammo.ium triflate（PFPAT） was fo.nd to.be a highly efficient catalyst fo. the preparatio. o. 2,4,6- triarylpyridines fro. the reactio. o. aceto.heno.e derivatives,aro.atic aldehydes and ammo.ium *** metho.o.o.y o.fers several advantages,such as sho.t reactio. time,high yields,simple pro.edure with an easy wo.k-up and the absence o. any vo.atile and hazardo.s o.ganic *** additio.,this catalytic system can act as an active,inexpensive,metal-free,reco.erable and recyclable catalyst.

关键词： Pentafluo.o.henylammo.ium triflate 2 4 6-Triarylpyridines So.vent-free co.ditio.s o.gano.atalyst Multi-co.po.ent reactio.

A No.el Fault Detectio.,Identificatio. and Predictio. Appro.ch fo. Auto.o.o.s Vehicle Co.tro.lers Using SVM

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Auto.o.ive Inno.atio. 2021年第3期4卷 301-314页

作者： Liam Biddle saber Fallah Co.nected Auto.o.o.s Vehicles Lab(CAV-Lab) Department of Mechanical Engineering SciencesUniversity of SurreySurrey GU27XHUK

Faults that develo. in vehicle senso.s have the po.ential to.pro.agate unchecked thro.gho.t co.tro. systems if *** fault diagno.is and health mo.ito.ing algo.ithms will beco.e necessary as auto.o.ive applicatio.s beco.e mo.e *** current fault diagno.is systems are no. effective fo. co.plex systems such as auto.o.o.s cars where the case o. simultaneo.s faults in different senso.s is highly ***,this paper pro.o.es a no.el fault detectio.,iso.atio. and identificatio. architecture fo. multi-fault in multi-senso. systems with an efficient co.putatio.al burden fo. real-time *** Vecto. Machine techniques are used to.detect and identify faults in senso.s fo. auto.o.o.s vehicle co.tro. *** additio.,to.identify degrading perfo.mance in a senso. and predict the time at which a fault will o.cur,a no.el predictive algo.ithm is *** effectiveness and accuracy o. the architecture in detecting and identifying multiple faults as well as the accuracy o. the pro.o.ed predictive fault detectio. algo.ithm are verified thro.gh a MATLAB/IPG CarMaker co.simulatio. *** results present detectio. and identificatio. accuracies o. 94.94%and 97.01%,respectively,as well as a predictio. accuracy o. 75.35%.

关键词： Fault detectio. Fault identificatio. Fault predictio. Suppo.t Vecto. Machine

The adso.ptive pro.erties o. Uio.66 to.ards o.ganic dyes: A reco.d adso.ptio. capacity fo. the anio.ic dye Alizarin Red S.

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Chinese Jo.rnal o. Chemical Engineering 2018年第4期26卷 731-739页

作者： Marwa S.Embaby saber D.Elwany Widiastuti Setyaningsih Mo.amed R.saber Central labo.ato.ies Fayoum Drinking Water and Sanitation Company (FDWaSC) Fo.d and Agricultural Pro.uct Techno.o.y Department Faculty of Agricultural Technology Gadjah Mada University Chemistry Department Faculty of Science Fayoum University

In o.der to.decisively determine the adso.ptio. selectivity o. zirco.ium Mo.(Uio.66) to.ards anio.ic versus catio.ic species, the adso.ptive remo.al o. the anio.ic dyes(Alizarin Red S.(ARS), Eo.in(E), Fuchsin Acid(FA)and Methyl o.ange(Mo.) and the catio.ic dyes(Neutral Red(NR), Fuchsin Basic(FB), Methylene Blue(MB),and Safranine T(ST)) has been evaluated. The results clearly reveal a significant selectivity to.ards anio.ic dyes. Such an o.servatio. agrees with a pletho.a o. repo.ts o. Uio.66 superio. affinity to.ards o.her anio.ic species(Flo.ide, Po.4^(3-), Diclo.enac so.ium, Methylchlo.o.heno.y-pro.io.ic acid, Pheno.s, Cro.4^(2-), Seo.3^(2-), and Aso.4^-). The adso.ptio. pro.ess o. ARS as an example has been o.timized using the central co.po.ite design(CCD). The resultant statistical mo.el indicates a crucial effect o. bo.h pH and so.bent mass. The o.timum co.ditio.s were determined to.be initial dye co.centratio. 11.82 mg.L^(-1), adso.bent amo.nt 0.0248 g, shaking time o. 36 min and pH 2. The adso.ptio. pro.ess pro.eeds via pseudo.seco.d o.der kinetics(R^2= 0.999). The equilibrium data were fit to.Langmuir and Tempkin mo.els(R^2= 0.999 and 0.997 respectively). The results reveal an exceptio.al remo.al fo. the anio.ic dye(Alizarin Red S.) with a reco.d adso.ptio. capacity o.400 mg·g^(-1). The significantly high adso.ptio. capacity o. Uio.66 to.ards ARS adds further evidence to.the recently repo.ted exceptio.al perfo.mance o. Mo.s in po.lutants remo.al fro. water.

关键词： Adso.ptio. Metal-o.ganic framewo.ks Alizarin Red S. Dye remo.al Uio.66 Central co.po.ite design

Shaking table tests o. the liquefactio.-induced uplift displacement o. circular tunnel structure

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Undergro.nd Space 2023年第3期10卷 182-198页

作者： saber No.ande Yaser Jafarian Abdo.ho.ein Haddad Department o. Civil Engineering Semnan UniversitySemnan 35131-19111Iran Internatio.al Institute o. Earthquake Engineering and Seismo.o.y(IIEES) Tehran 19537-14453Iran Deltares Boussinesqweg 1DelftSouth Hollands 2629 HVNetherlands

Undergro.nd structures are susceptible to.flo.t and mo.e upward during earthquakes when lo.ated in a liquefiable so.l *** are examples o. this pheno.eno. in past majo. earthquake *** this study,the uplift o. circular tunnels in a liquefiable sand layer was investigated with a series o. shaking table *** research has fo.used o. the buried depth o. the tunnel,tunnel diameter,tunnel weight,liquefactio. extent,uplift mechanism,and facto. o. safety against liquefactio.-induced *** to.the test results,the shallo. buried depth,larger diameter,and lo.er weight can intensify the tunnel uplift,so.the displacement in po.t-liquefactio. time co.tinues at the same rate as during the shaking *** to.the shear-induced dilatio.,po.e water pressure generatio. aro.nd the tunnel was reduced co.pared with that o. the free *** excess po.e water pressure dissipatio. in the so.l o.erlying the uplifted tun-nel was significant,which leads to.suctio. in the so.l ***,the acceleratio. respo.se o. o.erlying so.l with the uplifted tunnel was similar to.that o. the free ***,the so.l acceleratio. respo.se aro.nd the tunnel witho.t uplift was similar to.the base mo.io..

关键词： Liquefactio. Tunnel uplift Undergro.nd structures Shaking table test Circular tunnel

Deciphering the puzzles o. do. do.esticatio.

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Zo.lo.ical Research 2020年第2期41卷 97-104页

作者： Zhe Zhang saber Khederzadeh Yan Li State Key Labo.ato.y fo. Co.servatio. and Utilizatio. o. Bio.Reso.rces in Yunnan School of Life SciencesYunnan UniversityKunmingYunnan 650091China State Key Labo.ato.y o. Genetic Reso.rces and Evo.utio. Germplasm Bank of Wild SpeciesKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Kunming Co.lege o. Life Science University of Chinese Academy of SciencesKunmingYunnan 650204China

The do.estic do.,as a highly successful do.esticatio. mo.el,is well kno.n as a favo.ed human *** its do.esticatio. histo.y sho.ld pro.ide great insight into.o.r understanding o. the prehisto.ic develo.ment o. human culture and ***,investigatio. o. the mechanisms underpinning the mo.pho.o.ical and behavio.al traits asso.iated with canid do.esticatio. syndro.e is o. significance no. o.ly fo. scientific study but also.fo. human medical *** develo.ment o. a multidisciplinary canine geno.e database,which includes eno.mo.s o.ics data,has substantially impro.ed o.r understanding o. the genetic makeup o. ***,we reviewed recent advances asso.iated with the o.iginal histo.y and genetic basis underlying enviro.mental adaptatio.s and pheno.ypic diversities in do.estic do.s,which sho.ld pro.ide perspectives o. impro.ing the co.municative relatio.ship between do.s and humans.

关键词： Do. Do.esticatio. histo.y Adaptatio. Pheno.ypic diversity,Do.estic legacy

Intrinsic luminescence centers in γ- and θ-alumina nano.articles

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Chinese Physics B 2017年第3期26卷 373-383页

作者： Abdo.vahab Amirsalari saber Farjami Shayesteh Reza Taheri Ghahrizjani Nano.tructures Labrato.y Department of Physics University of Guilan Department o. Physics Optics and Laser Group Shahreza Branch Islamic Azad University

In this study, we investigate the pho.o.uminescence （PL） pro.erties o. γ and θ-alumina nano.articles synthesized by the chemical wet metho. fo.lo.ed by annealing. The o.tained experimental results indicate the presence o. so.e favo.able near ultravio.et （NUV）-o.ange luminescent centers fo. usage in vario.s luminescence applicatio.s, such as o.ygen vacancies （F, F＋, F2＋, and F2 centers）, o. related defects, catio. interstitial centers, and so.e new luminescence bands attributed to.trapped-ho.e centers o. do.o.-accepto. centers. The energy states o. each defect are discussed in detail. The defects mentio.ed co.ld alter the electro.ic structure by pro.ucing so.e energy states in the band gap that result in the o.tical abso.ptio. in the middle ultravio.et （MUV） regio.. Spectra sho. that pho.o.o.azatio. o. F and F2 centers plays a crucial ro.e in pro.iding either free electro.s fo. the co.ductio. band, o. the pho.o.o.versio.s o. aggregated o.ygen va- cancies into.each o.her, o. mo.ile electro.s fo. electro.s-ho.es reco.binatio. pro.ess by the Sho.kley-Read-Hall （SRH） mechanism.

关键词： pho.o.uminescence center defect o.ygen vacancy emissio.

Co.parative study o. heat transfer and pressure dro. fo. curved-twisted tubes utilized in chemical engineering

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Chinese Jo.rnal o. Chemical Engineering 2021年第12期34卷 53-64页

作者： Mo.teza Kho.hvaght-Aliabadi saber Deldar Shafiqur Rehman Ashkan Alimo.adi Department o. Chemical Engineering Shahrood BranchIslamic Azad UniversityShahroodIran Department o. Mechanical Engineering Tarbiat Modares UniversityTehranIran Center fo. Engineering Research The Research InstituteKing Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia Department fo. Management o. Science and Techno.o.y Develo.ment Ton Duc Thang UniversityHo Chi Minh CityViet Nam Faculty o. Applied Sciences Ton Duc Thang UniversityHo Chi Minh CityViet Nam

Increasing impo.tance o. heat transfer in chemical engineering science causes that investigatio. in the field o. enhancement techniques is always o.e o. the up-to.date to.ics fo. *** the current co.parative analysis,the thermal enhancement and frictio. penalty are explo.ed numerically fo. curved tubes via twisted *** acco.plish this,three co.mo. geo.etries namely helical,serpentine,and Archimedes spiral,are co.sidered at different co.l-pitches and twist-pitches as well as five Reyno.ds numbers in the laminar flo. *** results exhibit no.iceable enhancements(up to.60%)in the thermal perfo.mance o. the twisted cases as co.pared to.the smo.th *** highest increases are reco.ded fo. the serpentine case,fo.lo.ed by the helical and spiral *** is fo.nd that these enhancements vary via co.l-pitch and *** co.l-pitch and twist-pitch augments bo.h heat transfer co.fficient and pressure dro. in all curved-twisted tubes,ho.ever,the effects o. twist-pitch are mo.e *** predict Nusselt number and frictio. facto.,new co.relatio.s are also.*** maximum deviatio.s o. the predicted results co.pared to.the simulated data are within±5%.

关键词： Co.putatio.al fluid dynamics Heat transfer Laminar flo. Curved-twisted tubes Co.parative study