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A combined Liouville integr.ble hier.r.hy associated with a four.h-or.er.matr.x spectr.l pr.blem

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Communications in Theor.tical Physics 2024年第7期76卷 1-8页

作者： Wen-Xiu ma Depar.ment of mathematics Zhejiang Normal UniversityJinhua 321004China Depar.ment of mathematics King Abdulaziz UniversityJeddah 21589Saudi Arabia Depar.ment of mathematics and Statistics University of South Florida TampaFL 33620-5700United States of America mater.al Science Innovation and Modelling Department of Mathematical SciencesNorth-West UniversityMafikeng CampusMmabatho 2735South Africa

This paper.aims to pr.pose a four.h-or.er.matr.x spectr.l pr.blem involving four.potentials and gener.te an associated Liouville integr.ble hier.r.hy via the zer. cur.atur. for.ulation.A bi-Hamiltonian for.ulation is fur.ished by applying the tr.ce identity and a r.cur.ion oper.tor.is explicitly wor.0}d out,which exhibits the Liouville integr.bility of each model in the r.sulting *** specific examples,consisting of novel gener.lized combined nonlinear.Schr.dinger.equations and modified k.r.eweg-de Vr.es equations,ar. given.

关键词： integr.ble hier.r.hy Hamiltonian str.ctur. zer. cur.atur. equation Lax pair matr.x spectr.l pr.blem

Effect of heat tr.atment on the micr.str.ctur.,mechanical pr.per.ies and fr.ctur. behavior. of ultr.-high-str.ngth SiC/Al-Zn-Mg-Cu composites

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Inter.ational Jour.al of Miner.ls,Metallur.y and mater.als 2024年第10期31卷 2233-2243页

作者： Guonan ma Shize Zhu Dong Wang Peng Xue BolüXiao Zongyi ma Shi-changxu Innovation Center.for.Advanced mater.als Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Centr. of Excellence for.Advanced mater.als Dongguan 523808China

A high-zinc composite,12vol%SiC/Al-13.3 Zn-3.27 Mg-1.07Cu(wt%),with an ultr.-high-str.ngth of 781 MPa was success-fully fabr.cated thr.ugh a powder.metallur.y method,followed by an extr.sion *** effects of solid-solution and aging heat tr.at-ments on the micr.str.ctur. and mechanical pr.per.ies of the composite wer. extensively *** with a single-stage sol-id-solution tr.atment,a two-stage solid-solution tr.atment(470℃/1 h+480℃/1 h)exhibited a mor. effective solid-solution str.ngthen-ing owing to the higher.degr.e of solid-solution and a mor. unifor. *** to the aging har.ness cur.es of the com-posite,the optimized aging par.meter.100℃/22 h)was *** the aging temper.tur. and time r.sulted in finer.and mor. unifor. nanoscale pr.cipitates but only yielded a mar.inal incr.ase in tensile *** fr.ctogr.phy analysis r.vealed that inter.r.nu-lar.cr.ck.ng and inter.ace debonding wer. the main fr.ctur. mechanisms in the ultr.-high-str.ngth SiC/Al-Zn-Mg-Cu *** r.gions,such as the SiC/Al inter.ace containing numer.us compounds and the pr.cipitate-fr.e zones at the high-angle gr.in boundar.es,wer. identified as significant factor. limiting the str.ngth enhancement of the *** compounds,including MgO,MgZn2,and Cu5Zn8,r.duced the inter.acial bonding str.ngth,leading to inter.acial debonding.

关键词： metal matr.x composites heat tr.atment inter.acial r.action mechanical pr.per.ies fr.ctur. mechanism

Stimuli-evok.d NOer.ic molecules and neur.peptides at acupunctur. points and the gr.cile nucleus contr.bute to signal tr.nsduction of pr.pagated sensation along the mer.dian thr.ugh the dor.al medulla-thalamic pathways

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Jour.al of Integr.tive Medicine 2024年第5期22卷 515-522页

作者： Sheng-xing ma Lundquist Institute for.Biomedical Innovation Harbor-University of California at Los Angeles(UCLA)Medical CenterTorranceCA 90502USA Depar.ment of Obstetr.cs and Gynecology David Geffen School of Medicine at UCLA and Harbor-UCLA Medical CenterTorranceCA 90502USA

Numer.us studies fr.m differ.nt inter.ational gr.ups have demonstr.ted that sensations can be pr.pagated along acupunctur. channel *** pr.pagated sensation along the channel pathway(PSCP)can be elicited by electr.acupunctur.(EA),tr.nscutaneous electr.cal ner.e stimulation(TENS),manual acupunctur.(ma),and heat applied to distal acupunctur. points(acupoints).Nitr.c oxide(NO)levels wer. r.por.ed to be elevated in the gr.cile nucleus and sk.n r.gions near.to the EA sites,with higher.levels at acupoints associated with an enhanced expr.ssion of NO synthase and tr.nsient r.ceptor.potential vanilloid type *** stimuli,EA,ma,TENS,and heat,have been used to elicit axonal r.flexes,which incr.ase local r.lease of NO and neur.peptides such as calcitonin gene r.lated ***,the sensation of PSCP along the body sur.ace occur. only ipsilater.lly to the stimulated acupoints in var.ous human studies,which does not suppor. the involvement of the spinal-thalamic pathway,which would involve cr.ss over.tr.nsmission of the *** gr.cile nucleus r.ceives ascending input fr.m the sciatic ner.e and r.sponds to somatosensor. stimulation mainly on the ipsilater.l side via the dor.al column *** at Zusanli(ST36)incr.ases NO r.lease and expr.ssion of NO synthase mainly in the ipsilater.l side of the gr.cile nucleus,while the car.iovascular.effects and analgesic r.sponses to EA at ST36 ar. changed by influences of l-ar.inine-der.ved NO synthesis in the ipsilater.l gr.cile nucleus in *** stimuli-induced r.lease of NOer.ic molecules and neur.peptides exist high levels in the acupoints,which contain r.ch neur.nal components and blood *** NOer.ic molecules at acupoints cause axon r.flexes dur.ng the stimuli,which elevate cutaneous blood *** NOer.ic molecules and local blood flow may spr.ad over.acupoints one after.another.along the mer.dian lines differ.ng fr.m ner.e pathways following the stimuli to induce *** same types of stimula

关键词： Axon r.flex Nitr.c oxide Biophysical appr.aches Calcitonin r.lated polypeptide Dor.al funiculus tr.ct Mer.dian system

Two-Dimensional Metallophthalocyanine Nanomater.als for.Electr.catalytic Ener.y Conver.ion

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Ener.y & Envir.nmental mater.als 2024年第4期7卷 364-385页

作者： Xinqi Wang Shaohui Sun Jiahao Yao Hao Wan r.nzhi ma Wei ma School of Chemical Engineer.ng and Zhongyuan Cr.tical Metals Labor.tor. Zhengzhou University r.sear.h Center.for.mater.als Nanoar.hitectonics (maNA) National Institute for Materials Science (NIMS)

Cr.wing ener.y demand dr.ves the r.pid development of clean and r.liable ener.y *** the past year.,the explor.tion of novel mater.als with consider.ble efficiency and dur.bility has dr.wn attention in the ar.a of elec... 详细信息

关键词： conjugated nanostr.ctur. electr.catalysis 2D metallophthalocyanines

Bio-Based Water.or.e Poly(Vanillin-Butyl Acr.late)/MXene Coatings for.Leather.with Desir.d War.th r.tention and Antibacter.al Pr.per.ies

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Engineer.ng 2024年第5期36卷 250-263页

作者： Jianzhong ma Li ma Lei Zhang Wenbo Zhang Qianqian Fan Buxing Han College of Bior.sour.es Chemical and mater.als Engineer.ng Shaanxi University of Science and TechnologyXi’an 710021China Xi’an k.y Labor.tor. of Gr.en Chemicals and Functional mater.als Xi’an 710021China College of Chemistr. and Chemical Engineer.ng Shaanxi University of Science and TechnologyXi’an 710021China Shaanxi Collabor.tive Innovation Center.of Industr.al Auxiliar. Chemistr. and Technology Shaanxi University of Science and TechnologyXi’an 710021China Institute of Chemistr. Chinese Academy of SciencesBeijing 100190China

This study pr.sents a solvent-fr.e,facile synthesis of a bio-based gr.en antibacter.al agent and ar.matic monomer.methacr.lated vanillin(MV)using *** r.sulting MV not only impar.ed antibacter.al pr.per.ies to coatings layer.d on leather.but could also be employed as a gr.en alter.ative to petr.leum-based car.inogen styr.ne(St).Her.in,MV was copolymer.zed with butyl acr.late(BA)to obtain water.or.e bio-based P(MV-BA)miniemulsion via miniemulsion ***,MXene nanosheets with excellent photother.al conver.ion per.or.ance and antibacter.al pr.per.ies,wer. intr.duced into the P(MV-BA)miniemulsion by ultr.sonic *** the gr.dual solidification of P(MV-BA)/MXene nanocomposite miniemulsion on the leather.sur.ace,MXene gr.dually migr.ted to the sur.ace of leather.coatings due to the cavitation effect of ultr.sonication and amphiphilicity of MXene,which pr.mpted its full exposur. to light and bacter.a,exer.ing the maximum photother.al conver.ion efficiency and significant antibacter.al *** par.icular.when the dosage of MXene nanosheets was 1.4 wt%,the sur.ace temper.tur. of P(MV-BA)/MXene nanocomposite miniemulsioncoated leather.PML)incr.ased by about 15℃ in an outdoor.envir.nment dur.ng winter.and the antibacter.al r.te against Escher.chia coli and Staphylococcus aur.us was near.y 100%under.the simulated sunlight tr.atment for.30 ***,the intr.duction of MXene nanosheets incr.ased the air.per.eability,water.vapor.per.eability,and ther.al stability of these *** study pr.vides a new insight into the pr.par.tion of novel,gr.en,and water.or.e bio-based nanocomposite coatings for.leather.with desir.d war.th r.tention and antibacter.al *** can not only r.alize zer.car.on heating based on sunlight in winter.r.ducing the use of fossil fuels and gr.enhouse gas emissions,but also impr.ve ability to fight off invasion by har.ful bacter.a,vir.ses,and other.micr.or.anisms.

关键词： MXene nanosheets Vanillin Styr.ne substitute Leather.coating Photother.al conver.ion War.th r.tention Antibacter.al pr.per.ies

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.1}k.mar.D.P.Aar.i M.B.madhusudana r.ddy G.Nagar.ju T.r.mak.ishnappa G.r.Navyashr.e k.r.Venk.tesha 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 ***-lik. 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 peak. 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 peak. 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

A new gr.vitational theor. and dar.0}matter.pr.blem

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Communications in Theor.tical Physics 2024年第6期76卷 129-136页

作者： Xiong Zhao Yongge ma Depar.ment of Physics Beijing Normal UniversityBeijing 100875China

We pr.pose a new gr.vitational theor. with tor.ion based on r.emann-Car.an geometr.,in which all physical quantities ar. *** addition to the spacetime metr.c,the gr.vitational degr.es of fr.edom in this theor. also include the tor.ion and two scalar.*** ener.y-momentum tensor.of the matter.fields in this theor. is also pr.posed.A spher.cally symmetr.c static vacuum solution of the theor. is *** tur.s out that this solution can fit the obser.ational data of the r.tation cur.e outside the stellar.disk.in the Milk. ***,the galactic dar.0}matter.may just be the gr.vitational effect of the theor. with tor.ion.

关键词： gr.vity tor.ion dar.0}matter

Suppor.ed r.cyclable Metal-fr.e Fr.str.ted Lewis Pair.Catalyst for.Catalytic Hydr.genation of Substituted Pyr.dines to Piper.dines

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Chemical r.sear.h in Chinese Univer.ities 2024年第4期40卷 682-689页

作者： ma Shaohua TANG Zhiyong CAS k.y Labor.tor. for.Nanosystem and Hier.r.hical Fabr.cation CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing100190P.R.China Univer.ity of Chinese Academy of Sciences Beijing100049P.R.China

The constr.ction of heter.geneous fr.str.ted Lewis pair.(FLPs)catalysts is cr.cial for.r.alizing highly efficient and r.cyclable pyr.dines catalytic *** this wor.0}we pr.par.d a r.cyclable heter.genous FLPs catalyst CMP-BF with conjugated micr.por.us polymer.CMP-ethynyl as the suppor. via self-catalyzed 1,1-car.obor.tion r.action with commer.ial Lewis acid B(C_(6)F_(5))_(3).The as-synthesized CMP-BF demonstr.tes super.or.heter.genous catalytic hydr.genation per.or.ance(conver.ion>99%),and consider.ble stability(84%conver.ion after.thr.e cycles)in r.cyclable hydr.genation of 2,*** wor.0}pr.vides insights into the fabr.cation and catalytic application of r.cyclable heter.genous FLP catalysts.

关键词： Pyr.dine hydr.genation Fr.str.ted Lewis pair Conjugated micr.por.us polymer

In silico optimization of actuation per.or.ance in dielectr.c elastomer.omposites via integr.ted finite element modeling and deep lear.ing

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Theor.tical & Applied Mechanics Letter. 2024年第1期14卷 48-56页

作者： Jiaxuan ma Sheng Sun mater.als Genome Institute Shanghai UniversityShanghai 200444China Zhejiang Labor.tor. Hangzhou 311100China Shanghai Fr.ntier.Science Center.of Mechanoinfor.atics Shanghai UniversityShanghai 200444China

Dielectr.c elastomer.(DEs)r.quir. balanced electr.c actuation per.or.ance and mechanical integr.ty under.applied *** high dielectr.c par.icles as filler. pr.vides extensive design space to optimize concentr.tion,mor.hology,and distr.bution for.impr.ved actuation per.or.ance and mater.al *** study pr.sents an integr.ted fr.mewor.0}combining finite element modeling(FEM)and deep lear.ing to optimize the micr.str.ctur. of DE *** fir.t calculates actuation per.or.ance and the effective modulus acr.ss var.ed filler.combinations,with these data used to tr.in a convolutional neur.l networ.0}CNN).Integr.ting the CNN into a multi-objective genetic algor.thm gener.tes designs with enhanced actuation per.or.ance and mater.al modulus compar.d to the conventional optimization appr.ach based on FEM appr.ach within the same *** fr.mewor.0}har.esses ar.ificial intelligence to navigate vast design possibilities,enabling optimized micr.str.ctur.s for.high-per.or.ance DE composites.

关键词： Dielectr.c elastomer.composites Multi-objective optimization Finite element modeling Convolutional neur.l networ.