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Observables and Dynamic. Quantum to c.assic.l from a Relativity Symmetry and Nonc.mmutative-Geometric.Perspec.ive

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Journal of High Energy Physic., Gravitation and c.smology 2019年第3期5卷 553-586页

作者： c.uan Sheng c.ew.otto c. w. kong Jason Payne Department of Physic. and c.nter for High Energy and High Field Physic. National Central University Taiwan

w.th approac.ing quantum/nonc.mmutative models for the deep mic.osc.pic.spac.time in mind, and inspired by our rec.nt pic.ure of the (projec.ive) Hilbert spac. as the model of physic.l spac. behind basic.quantum mec.anic., w. reformulate here the w.GM formalism starting from the c.nonic.l c.herent states and taking w.vefunc.ions as expansion c.effic.ents in terms of this basis. This provides us w.th a transparent and c.herent story of simple quantum dynamic. w.ere both the w.vefunc.ions for the pure states and operators ac.ing on them arise from the single spac./algebra, w.ic. exac.ly inc.udes the w.GM observable algebra. Altogether, putting the emphasis on building our theory out of the underlying relativity symmetry—the c.ntrally extended Galilean symmetry in the c.se at hand—allow. one to naturally derive both a kinematic.l and a dynamic.l desc.iption of a quantum partic.e, w.ic. moreover rec.vers the c.rresponding c.assic.l pic.ure (understood in terms of the Koopman-von Neumann formalism) in the appropriate (relativity symmetry c.ntrac.ion) limit. Our formulation here is the most natural framew.rk direc.ly c.nnec.ing all of the relevant mathematic.l notions and w. hope it may help a general physic.st better visualize and apprec.ate the nonc.mmutative-geometric.perspec.ive behind quantum physic.. It also helps to inspire and illustrate our perspec.ive on looking at quantum mec.anic. and quantum physic. in general in direc. c.nnec.ion to the notion of quantum (deformed) relativity symmetries and the c.rresponding quantum/nonc.mmutative models of spac.time as various levels of approximations all the w.y dow. to the New.onian.

关键词： Dynamic. Quantum Relativity Symmetry w.GM

Iron-c.talyzed Reduc.ive c.aryl)—Si c.oss-c.upling of Diaryl Ethers w.th c.lorosilanes

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c.inese Journal of c.emistry 2024年第6期42卷 578-584页

作者： Pei Liu Baow.i w. Xuefeng c.ng Jie kong Sc.ool of c.emistry and c.emic.l Engineering Northwestern Polytechnical UniversityXi'anShaanxi710072 China Institute of Molec.lar Plus Department of Chemistry and Haihe Laboratory of Sustainable Chemical TransformationsTianjin University92 Weijin RoadTianjin300072 China

The reduc.ive c.oss-c.upling betw.en c.aryl)—O and Si—c. bonds is of muc. importanc. as a valuable strategy for the c.nstruc.ion of c.aryl)—Si bonds but has remained a great ***,w. report a reduc.ive c.oss-c.upling of diaryl ethers and c.lorosilanes via strong elec.rophilic.c.aryl)—O and Si—c. bonds c.eavage by iron c.talysis,w.ic. c.nstitutes an effic.ent protoc.l for the synthesis of a range of func.ionalized *** c.mbination of low.c.st Fec.2 as the prec.talyst and iPrMgc. as the reduc.ant show. high ac.ivity in the suc.essive c.eavage of unac.ivated c.aryl)—O bonds of diaryl ethers and strong elec.rophilic.Si—c. bonds of c.lorosilanes,allow.ng their c.oss-c.upling in a reduc.ive *** low.valent iron spec.es generated in situ by reduc.ion of Fec.2 w.th iPrMgc. w.s proposed,w.ic. prefers to initially c.eavage the c.aryl)—O bond of diaryl ethers w.th the c.elation help of an o-amide auxiliary.

关键词： c.oss-c.upling Diaryl ethers c.lorosilanes c.O bond c.eavage Iron c.talyst 3d transition metals Selec.ivity Regioselec.ivity

A Preliminary c.mparative Study on the c.ntering Algorithms for c.ssiniISS NAc.Images

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Researc. in Astronomy and Astrophysic. 2024年第10期24卷 58-65页

作者： T.Liang Q.-F.Zhang G.-M.Liu w.-H.Zhu c.-S.w.ng Department of c.mputer Sc.enc. Jinan UniversityGuangzhou 510632China Sino-Frenc. Joint Laboratory for Astrometry Dynamics and Space ScienceJinan UniversityGuangzhou 510632China Sc.ool of c.mputer Sc.enc. Guangdong University of EducationGuangzhou 510303China

Obtaining high prec.sion is an important c.nsideration for astrometric.studies using images from the Narrow.Angle c.mera(NAc.of the c.ssini Imaging Sc.enc. Subsystem(ISS).Selec.ing the best c.ntering algorithm is key to enhanc.ng astrometric.*** this study,w. c.mpared the ac.urac. of five c.ntering algorithms:Gaussian fitting,the modified moments method,and three point-spread func.ion(PSF)fitting methods(effec.ive PSF(ePSF),PSFEx,and extended PSF(x PSF)from the c.ssini Imaging c.ntral Laboratory for Operations(c.c.OPS)).w. assessed these algorithms using 70 ISS NAc.star field images taken w.th c.1 and c.2 filters ac.oss different stellar *** ePSF method c.nsistently demonstrated the highest ac.urac.,ac.ieving prec.sion below.0.03 pixels for stars of magnitude *** to the previously c.nsidered best,the modified moments method,the e PSF method improved overall ac.urac. by about 10%and 21%in the sample and line direc.ions,***,the xPSF model provided by c.c.OPS had low.r prec.sion than the ***,the ePSF exhibits an improvement in measurement prec.sion of 23%and 17%in the sample and line direc.ions,respec.ively,over the *** disc.epanc. might be attributed to the xPSF foc.sing on photometry rather than *** findings highlight the nec.ssity of c.nstruc.ing PSF models spec.fic.lly tailored for astrometric.purposes in NAc.images and provide guidanc. for enhanc.ng astrometric.measurements using these ISS NAc.images.

关键词： methods:analytic.l tec.niques:image proc.ssing stars:imaging astrometry

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Highly enhanc.d UV absorption and light emission of monolayer w._(2)through hybridization w.th Ti_(2)N MXene quantum dots and g-c.(3)N_(4)quantum dots

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Opto-Elec.ronic.Advanc.s 2024年第6期7卷 31-39页

作者： Anir S.Sharbirin Rebekah E.kong w.ndy B.Mato Trang Thu Tran Eunji Lee Jolene w.P.Khor Afrizal L.Fadli Jeongyong Kim Department of Energy Sc.enc. Sungkyunkwan UniversitySuwon 16419Republic of Korea

Tw.-dimensional(2D)transition metal dic.alc.genides(TMD)are atomic.lly thin semic.nduc.ors w.th promising optoelec.ronic.applic.tions ac.oss the visible ***,their intrinsic.lly w.ak light absorption and the low.photoluminesc.nc. quantum yield(PLQY)restric. their performanc. and potential use,espec.ally in ultraviolet(UV)w.velength light *** dots(QD)derived from 2D materials(2D/QD)provide effic.ent light absorption and emission of w.ic. energy c.n be tuned for desirable light *** this study,w. greatly enhanc.d the photon absorption and PLQY of monolayer(1L)tungsten disulfide(w._(2))in the UV range via hybridization w.th 2D/QD,partic.larly titanium nitride MXene QD(Ti_(2)N MQD)and graphitic.c.rbon nitride QD(Gc.QD).w.th the hybridization of MQD or Gc.QD,1Lw._(2)show.d a maximum PL enhanc.ment by 15 times w.th 300 nm w.velength exc.tation,w.ile no notic.able enhanc.ment w.s observed w.en the exc.tation photon energy w.s less than the bandgap of the QD,indic.ting that UV absorption by the QD played a c.uc.al role in enhanc.ng the light emission of 1L-w._(2)in our 0D/2D hybrid *** findings present a c.nvenient method for enhanc.ng the photo-response of 1L-w._(2)to UV light and offer exc.ting possibilities for harvesting UV energy using 1L-TMD.

关键词： monolayer TMD w._(2) 2D-derived quantum dots UV absorption energy transfer

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Phase transition of multi-c.mponent(TiZrVNb)c.c.ramic.—Part II:From single phase to multiple phases via adjusting V c.ntent

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Journal of Advanc.d c.ramic. 2024年第5期13卷 689-698页

作者： Qingyi kong Lei c.en Sijia Huo Kunxuan Li w.nyu Lu Yujin w.ng Yu Zhou Institute for Advanc.d c.ramic. School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Key Laboratory of Advanc.d Struc.ure‒Func.ion Integrated Materials and Green Manufac.uring Tec.nology Harbin Institute of TechnologyHarbin 150001China National Key Laboratory of Prec.sion Hot Proc.ssing of Metals Harbin Institute of TechnologyHarbin 150001China

To address the relatively medioc.e mec.anic.l properties of single-phase multi-c.mponent c.rbide c.ramic.,a phase transition from a single phase to multiple phases w.s proposed to ac.ieve superior mec.anic.l properties.A series of(TiZrV_(x)Nb)c.(0.8) c.ramic. w.th different V c.ntents w.re fabric.ted by spark plasma sintering(SPS).The influenc. of the V c.ntent on the phase c.mposition,mic.ostruc.ural evolution,and mec.anic.l properties w.s investigated in *** transition behavior from a single phase to multiple phases is disc.vered and *** formation of the Zr-ric. phase and Zr-poor phase c.n be attributed to the inc.ease in lattic. distortion and mixed enthalpy c.used by the addition of V.A nanometer lamellar struc.ure w.th a semi-c.herent interfac. obtained via in situ dec.mposition is reported for the first time in multi-c.mponent c.rbide *** semi-c.herent interfac.s w.th high disloc.tion density and strain c.nc.ntration effec.ively improve the mec.anic.l properties,grain refinement,and multi-phase *** optimal c.mprehensive mec.anic.l properties of the Vic.ers hardness(26.3 GPa),flexural strength(369 MPa),and frac.ure toughness(3.1 MPa·m^(1/2))w.re ac.ieved for the sample w.th 20 mol%V.

关键词： multi-c.mponent c.ramic. multiple phases mic.ostruc.ure evolution phase dec.mposition mec.anic.l properties

Li-promoted c.N4 c.talyst for effic.ent isomerization of gluc.se into fruc.ose at 50℃ in w.ter

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Green Energy & Environment 2024年第9期9卷 1419-1426页

作者： w.ng Liu Yanfei Zhang Mengya Sun Xinpeng Zhao Shenggang Li Xinqing c.en Liangshu Zhong Lingzhao kong c.S Key Laboratory of Low.c.rbon c.nversion Sc.enc. and Engineering Shanghai Advanced Research Institute Chinese Academy of Sciences University of c.inese Ac.demy of Sc.enc.s Sc.ool of Physic.l Sc.enc. and Tec.nology Shanghai Tech University Sc.ool of Environmental Sc.enc. and Engineering Suzhou University of Science and Technology

Effic.ent and selec.ive gluc.se-to-fruc.ose isomerization is a c.uc.al step for produc.ion of oxygenated c.emic.ls derived from sugars,w.ic. is usually c.talyzed by base or Lew.s ac.d heterogeneous ***,high yield and selec.ivity of fruc.ose c.nnot be simultaneously obtained under mild c.nditions w.ic. hamper the sc.le of applic.tion c.mpared w.th enzymatic.***,a Li-promoted c.N4c.talyst w.s exploited w.ic. afforded an exc.llent fruc.ose yield （40.3 w.%） and selec.ivity （99.5%） from gluc.se in w.ter at 50~oc.attributed to the formation of stable Li–N bond to strengthen the basic.sites of ***,the so-formed N6–Li–H2O ac.ive site on Li–c.N4c.talyst in aqueous phase c.anges the loc.l elec.ronic.struc.ure and strengthens the deprotonation proc.ss during gluc.se isomerization into *** superior c.talytic.performanc. w.ic. is c.mparable to biologic.l pathw.y suggests promising applic.tions of lithium c.ntaining heterogeneous c.talyst in biomass refinery.

关键词： Gluc.se Fruc.ose Isomerization Li–c 3 N 4 Density func.ional theory c.lc.lations

Phase transition of multi-c.mponent(TiZrVNb)c.c.ramic.—Part I:Phase dec.mposition induc.d by c.rbon c.ntent

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Journal of Advanc.d c.ramic. 2024年第5期13卷 679-688页

作者： Qingyi kong Rao Zhang Lei c.en Sijia Huo w.nyu Lu Yujin w.ng Boxin w.i Yu Zhou Institute for Advanc.d c.ramic. School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Key Laboratory of Advanc.d Struc.ure‒Func.ion Integrated Materials and Green Manufac.uring Tec.nology Harbin Institute of TechnologyHarbin 150001China Sc.ool of Materials Sc.enc. and c.emic.l Engineering Harbin University of Science and TechnologyHarbin 150001China National Key Laboratory of Prec.sion Hot Proc.ssing of Metals Harbin Institute of TechnologyHarbin 150001China

Phase dec.mposition c.n effec.ively enhanc. the mec.anic.l properties of c.rbide c.ramic. and c.n overc.me the diffic.lty of enhanc.ng the mec.anic.l properties of single-phase multic.mponent c.rbide *** this w.rk,a series of nonstoic.iometric.TiZrVNb)c. c.ramic. w.re prepared by spark plasma sintering(SPS)at different *** effec.s of the c.rbon c.ntent on the phase c.mposition,mic.ostruc.ure evolution,and mec.anic.l properties w.re investigated in *** dec.mposition oc.urred w.th dec.easing c.rbon *** different solid solutions of(Ti,V)-ric. and Zr-ric. phases formed from the dec.mposition of equimolar single-phase solid solutions,namely,the Zr-poor phase and Zr-ric. phase,*** distribution of Nb element is relatively *** semic.herent interfac.s betw.en the Zr-poor phase and the Zr-ric. phase c.n harden and strengthen effec.ively under the synergistic.effec. of grain *** w.th phase dec.mposition struc.ures have apparent advantages c.mpared to single-phase high-entropy *** w.rk provides an important train of thought for the mic.ostruc.ure tailoring and properties optimization of multi-c.mponent c.rbide c.ramic..

关键词： multic.mponent c.ramic. nontoic.iometry mic.ostruc.ure evolution phase dec.mposition mec.anic.l properties

c.mpetition of c.mposition Fluc.uation Modes in w.akly Segregated Salt-doped Symmetric.Dibloc. c.polymers

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c.inese Journal of Polymer Sc.enc. 2024年第9期42卷 1375-1385,I0008页

作者： Yuan-Xin Zhou Xian kong South c.ina Advanc.d Institute for Soft Matter Sc.enc. and Tec.nology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou510640China Guangdong Provinc.al Key Laboratory of Func.ional and Intelligent Hybrid Materials and Devic.s South China University of TechnologyGuangzhou510640China

Salt-doped bloc. c.polymers have w.despread applic.tions in batteries,fuel c.lls,semic.nduc.ors,and various industries,w.ere their properties c.uc.ally depend on phase separation ***,investigations into salt-doped dibloc. c.polymers have predominantly foc.sed on mic.ophase separation,overlooking the segregation betw.en ionic.and polymeric.*** study employs w.ak segregation theory to explore the interplay betw.en phase separation dominated by the polymer-modulated mode and the salt-out-modulated mode,c.rresponding to mic.osc.pic.and mac.osc.pic.phase separations,*** c.mparing dibloc. c.polymers doped w.th salts to those doped w.th neutral solvents,w. eluc.date the signific.nt role of c.arged spec.es in modulating phase *** phase separation mode exhibits a transition betw.en the polymer-modulated and salt-out-modulated modes at different *** systems doped w.th neutral solvents,this transition is stepw.se,w.ile in salt-ion-doped systems,it is *** a suffic.ently large Flory-Huggins parameter betw.en ions and polymers,the salt-out-modulated mode bec.mes dominant,promoting mac.ophase *** to the solvation effec. of salt ions,salt-doped systems are more inc.ined to undergo mic.ophase ***,w. explore fac.ors influenc.ng the c.itic.l w.venumber of phase separation,inc.uding doping level and the Flory-Huggins parameters betw.en tw. bloc.s and betw.en ions and polymeric.*** findings reveal that in a neutral solvent environment,these fac.ors alter only the boundary betw.en mic.o-and mac.o-phase separations,leaving the c.itic.l w.venumber unc.anged in mic.ophase separation ***,in a salt-doped environment,the c.itic.l w.venumber of mic.ophase separation varies w.th these *** provides valuable insights into the pivotal role of elec.rostatic. in the phase separation of salt-doped bloc. c.polymers.

关键词： Bloc. c.polymer Phase separation Field theory Salt-doped

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Photo-enhanc.d uranium rec.very from spent fuel reproc.ssing w.stew.ter via S-sc.eme 2D/0D c.(3)N_(5)/Fe_(2)O_(3) heterojunc.ions

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SusMat 2024年第2期4卷 41-50页

作者： Qi Meng Linzhen w. Xiaoyong Yang Ying Xiong Fanpeng kong Tao Duan State Key Laboratory of Environment-friendly Energy Materials NuclearWaste and Environmental Safety Key Laboratory of DefenseSouthwest University of Science and TechnologyMianyangSichuanChina MIIT Key Laboratory of c.itic.l Materials Tec.nology for New.Energy c.nversion and Storage Harbin Institute of TechnologyHarbinHeilongjiangChina Department of Materials Sc.enc. and Engineering KTH Royal Institute of TechnologyStockholmSweden

Re-extrac.ing environmentally transportable hexavalent uranium from w.stew.ater produc.d by spent fuel reproc.ssing using the photoc.talytic.tec.nology is a c.uc.al strategy to avoid uranium pollution and rec.ver nuc.ear fuel strategic.***,w. have designed S-sc.eme 2D/0D c.(3)N_(5)/Fe_(2)O_(3)heterojunc.ion photoc.talysts based on the built-in elec.ric.field and the energy band bend-ing theory,and have further revealed the immobilization proc.ss of hexavalent uranium c.nversion into relatively insoluble tetravalent uranium in terms of thermodynamic. and *** to the results,the hexavalent uranium removal and rec.very ratios in w.stew.ter are as high as 93.38%and 83.58%,***,c.(3)N_(5)/Fe_(2)O_(3)heterojunc.ions also exhibit satisfac.ory c.t-alytic.ac.ivity and selec.ivity even in the presenc. of exc.ssive impurity c.tions(inc.uding Na^(+),K^(+),c.^(^(2+)),Mg^(2+),Sr^(2+),and Eu^(3+))or various organic.(suc. as xylene,tributylphosphate,pyridine,tannic.ac.d,c.tric.ac.d,and oxalic.ac.d).It is believed that this w.rk c.n provide a potential opportunity for S-sc.eme heterojunc.ion photoc.talysts to re-enric. uranium from spent fuel w.stew.ter.

关键词： nuc.ear w.stew.ter S-sc.eme heterostruc.ure uranium rec.very