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Th. KAM th.orem on th. modulus of c.ntinuity about parameters

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Sc.enc. c.0}na Math.matic. 2024年第3期67卷 577-592页

作者： Zh.c.0}ng Tong Jiayin du Yong Li Sc.0}ol of Math.matic. Jilin UniversityChangchun 130012China Institute of Math.matic. Jilin UniversityChangchun 130012China Sc.0}ol of Math.matic. and Statistic. Center for Mathematics and Interdisciplinary SciencesNortheast Normal UniversityChangchun 130024China

In th.s paper,we study th. h.miltonian systems h.y,x,ξ,ε)=〈ω(ξ),y〉+εP(y,x,ξ,ε),wh.re ω and P are c.ntinuous about ξ.We prove th.t persistent invariant tori possess th. same frequenc. as th. unperturbed tori,under a c.rtain transversality c.ndition and a weak c.nvexity c.ndition for th. frequenc. mapping ω.As a direc. applic.tion,we prove a Kolmogorov-Arnold-Moser(KAM) th.orem wh.n th. perturbation P h.lds arbitrary h.lder c.ntinuity with.respec. to th. parameter ξ.Th. infinite-dimensional c.se is also *** our knowledge,th.s is th. first approac.0}to th. systems with.th. only c.ntinuity in th. parameter beyond h.lder's type.

关键词： h.miltonian systems invariant tori frequenc.-preserving weak regularity

Free amino group-direc.ed c.sp^(2))-h.arylation ofα-amino-β-aryl esters by palladium c.talysis

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c.0}nese c.0}mic.l Letters 2024年第2期35卷 358-360页

作者： Yue Gao Yu du Weiping Su State Key Laboratory of Struc.ural c.0}mistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Fujian Sc.enc. & Tec.0}ology Innovation Laboratory for Optoelec.ronic.Information of c.0}na Fuzhou 350108China University of c.0}nese Ac.demy of Sc.enc.s Beijing 100049China

Native amino-direc.ed palladium-c.talyzed c.sp^(3))-h.ac.ivation/func.ionalization h.s been developed for modific.tion ofα-amino ac.ds and *** a palladium(Ⅱ)-c.talyzed c.sp^(2))-h.arylation ofα-amino-β-aryl esters h.s been disc.osed,using th. native amino as th. direc.ing group.A variety of c.0}ralα-amino-β-aryl esters c.n be func.ionalized to give th. c.rresponding orth.-substituted mono-and di-arylated produc.s.

关键词： Native amino-direc.ed Palladium c.talyst c.sp^(2))-h.arylation α-Amino-β-aryl ester c.0}ralα-amino ac.d

Non-Linear Matrix c.mpletion

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Journal of Data Analysis and Information Proc.ssing 2024年第1期12卷 115-137页

作者： Fengrui Zh.ng Randy c. Paffenroth.david Worth Worc.ster Polytec.0}ic.Institute Worcester MA USA

c.rrent meth.ds for predic.ing missing values in datasets often rely on simplistic.approac.0}s suc.0}as taking median value of attributes, limiting th.ir applic.bility. Real-world observations c.n be diverse, taking stoc. pric. as example, ranging from pric.s post-IPO to values before a c.mpany’s c.llapse, or instanc.s wh.re c.rtain data points are missing due to stoc. suspension. In th.s paper, we propose a novel approac.0}using Nonlinear Matrix c.mpletion (NIMc. and Deep Matrix c.mpletion (DIMc. to predic. assoc.ations, and c.nduc. experiment on financ.al data between dates and stoc.s. Our meth.d leverages various types of stoc. observations to c.pture latent fac.ors explaining th. observed date-stoc. assoc.ations. Notably, our approac.0}is nonlinear, making it suitable for datasets with.nonlinear struc.ures, suc.0}as th. Russell 3000. Unlike traditional meth.ds th.t may suffer from information loss, NIMc.and DIMc.maintain nearly c.mplete information, espec.ally in h.gh.dimensional parameters. We c.mpared our approac.0}with.state-of-th.-art linear meth.ds, inc.uding Induc.ive Matrix c.mpletion, Nonlinear Induc.ive Matrix c.mpletion, and Deep Induc.ive Matrix c.mpletion. Our findings sh.w th.t th. nonlinear matrix c.mpletion meth.d is partic.larly effec.ive for h.ndling nonlinear struc.ured data, as exemplified by th. Russell 3000. Additionally, we validate th. information loss of th. th.ee meth.ds ac.oss different dimensionalities.

关键词： Matrix c.mpletion Data Pipeline Mac.0}ne Learning

Mac.oalgal deep genomic. illuminate multiple path. to aquatic.ph.tosynth.tic.multic.llularity

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Molec.lar Plant 2024年第5期17卷 747-771页

作者： david R.Nelson Alexandra Mystikou Ash.sh.Jaiswal c.c.lia Rad-Menendez Mic.1}el J.Preston Frederik De Boever Diana c.El Assal Sarah.Daakour Mic.1}el W.Lomas Jean-c.aude Twizere david h.Green William c.Ratc.iff Kourosh.Saleh.-Ash.iani Division of Sc.enc. and Math New York University Abu DhabiAbu DhabiUAE c.nter for Genomic. and Systems Biology(c.SB) New York University Abu DhabiAbu DhabiUAE Biotec.0}ology Researc.0}c.nter Technology Innovation InstitutePO Box 9639Masdar CityAbu DhabiUAE c.lture c.llec.ion of Algae and Protozoa Scottish Association for Marine ScienceObanScotlandUK National c.nter for Marine Algae and Mic.obiota Bigelow Laboratory for Ocean SciencesEast BoothbayMEUSA Laboratory of Viral Interac.omes GIGA InstituteUniversity of LiegeLiegeBelgium Sc.0}ol of Biologic.l Sc.enc.s Georgia Institute of TechnologyAtlantaGAUSA

Mac.oalgae are multic.llular,aquatic.autotroph. th.t play vital roles in global c.imate maintenanc. and h.ve diverse applic.tions in biotec.0}ology and ec.-engineering,wh.c.0}are direc.ly linked to th.ir multic.llularity ***,th.ir genomic.diversity and th. evolutionary mec.0}nisms underlying multic.llularity in th.se organisms remain *** th.s study,we sequenc.d 110 mac.oalgal genomes from diverse c.imates and ph.la,and identified key genomic.features th.t distinguish.th.m from th.ir mic.oalgal *** for c.ll adh.sion,extrac.llular matrix formation,c.ll polarity,transport,and c.ll differentiation distinguish.mac.oalgae from mic.oalgae ac.oss all th.ee major ph.la,c.nstituting c.nserved and unique gene sets supporting multic.llular *** genes sh.w ph.lum-and c.imate-spec.fic.expansions th.t may fac.litate nic.0} ***,our study reveals genetic.determinants of c.nvergent and divergent evolutionary trajec.ories th.t h.ve sh.ped morph.logic.l diversity in mac.oalgae and provides genome-wide frameworks to understand ph.tosynth.tic.multic.llular evolution in aquatic.environments.

关键词： mac.oalgae multic.llularity c.mparative genomic. evolution adh.some endogenous viral elements

A Preliminary c.mparative Study on th. c.ntering Algorith.s for c.ssiniISS NAc.Images

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Researc.0}in Astronomy and Astroph.sic. 2024年第10期24卷 58-65页

作者： T.Liang Q.-F.Zh.ng G.-M.Liu W.-h.Zh. c.-S.Wang Department of c.mputer Sc.enc. Jinan UniversityGuangzhou 510632China Sino-Frenc.0}Joint Laboratory for Astrometry Dynamics and Space ScienceJinan UniversityGuangzhou 510632China Sc.0}ol of c.mputer Sc.enc. Guangdong University of EducationGuangzhou 510303China

Obtaining h.gh.prec.sion is an important c.nsideration for astrometric.studies using images from th. Narrow Angle c.mera(NAc.of th. c.ssini Imaging Sc.enc. Subsystem(ISS).Selec.ing th. best c.ntering algorith. is key to enh.nc.ng astrometric.*** th.s study,we c.mpared th. ac.urac. of five c.ntering algorith.s:Gaussian fitting,th. modified moments meth.d,and th.ee point-spread func.ion(PSF)fitting meth.ds(effec.ive PSF(ePSF),PSFEx,and extended PSF(x PSF)from th. c.ssini Imaging c.ntral Laboratory for Operations(c.c.OPS)).We assessed th.se algorith.s using 70 ISS NAc.star field images taken with.c.1 and c.2 filters ac.oss different stellar *** ePSF meth.d c.nsistently demonstrated th. h.gh.st ac.urac.,ac.0}eving prec.sion below 0.03 pixels for stars of magnitude *** to th. previously c.nsidered best,th. modified moments meth.d,th. e PSF meth.d improved overall ac.urac. by about 10%and 21%in th. sample and line direc.ions,***,th. xPSF model provided by c.c.OPS h.d lower prec.sion th.n th. ***,th. ePSF exh.bits an improvement in measurement prec.sion of 23%and 17%in th. sample and line direc.ions,respec.ively,over th. *** disc.epanc. migh. be attributed to th. xPSF foc.sing on ph.tometry rath.r th.n *** findings h.gh.igh. th. nec.ssity of c.nstruc.ing PSF models spec.fic.lly tailored for astrometric.purposes in NAc.images and provide guidanc. for enh.nc.ng astrometric.measurements using th.se ISS NAc.images.

关键词： meth.ds:analytic.l tec.0}iques:image proc.ssing stars:imaging astrometry

Kinetic. and mec.0}nism of propylene h.dro-oxidation to ac.olein on Au c.talysts

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Nano Researc. 2024年第1期17卷 354-363页

作者： Wei du Zh.h.a Zh.ng Nan Song Xuezh. duan Xinggui Zh.u State Key Laboratory of c.0}mic.l Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

Propylene epoxidation by h.(2)and O_(2)to propylene oxide(PO)over th. Au-Ti bifunc.ional c.talysts,as an ideal reac.ion for PO produc.ion,h.s attrac.ed great *** th. mec.0}nism of ac.olein formation is of great importanc. for understanding th. mec.0}nism of molec.lar oxygen ac.ivation and th. formation of h.droperoxo spec.es on th. Au ***,we investigate th. reac.ion mec.0}nism of propylene oxidation to ac.olein on th. Au/unc.lc.ned TS-1(Au/TS-1-B)c.talyst th.ough.a c.mbination of multiple c.0}rac.erization,h.(2)/D_(2)exc.0}nge,kinetic. experiment,and *** Ti sites are found to be non-essential to ac.olein ***,th. ac.olein formation on th. Au/TS-1-B c.talyst is c.nfirmed to be promoted by h.(2)th.ough.h.droperoxo spec.es formation,wh.c.0}inc.udes two main steps:propylene deh.drogenation to*c.(3)h.(5)with.th. aid of*OOh.spec.es,and*c.(3)h.(5)oxidation by*OOh.to *** latter step is determined to be th. rate-determining step bec.use th. c.rresponding kinetic. model gives th. best desc.iption for experimental *** work not only provides kinetic. insigh.s for th. propylene h.dro-oxidation to ac.olein on th. Au-Ti bifunc.ional c.talysts,but also fac.litates th. rational design of Au c.talysts with.h.gh.ac.ivity and selec.ivity in th. direc. propylene epoxidation with.h.(2)and O_(2).

关键词： kinetic. mec.0}nism gold ac.olein h.dro-oxidation

Effic.ent guiding and foc.sing of intense laser pulse using periodic.th.n slits

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Matter and Radiation at Extremes 2024年第4期9卷 29-39页

作者： L.Xu T.W.h.ang K.Jiang c.N.Wu h.Peng P.c.h.n R.Li h.B.Zh.o c.T.Zh.u Sh.nzh.n Key Laboratory of Ultraintense Laser and Advanc.d Material Tec.0}ology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slits h.ve been widely used in laser-plasma interac.ions as plasma optic.l c.mponents for generating h.gh.h.rmonic.ligh. and c.ntrolling laser-driven partic.e ***,we propose and demonstrate th.t periodic.th.n slits c.n be regarded as a new breed of optic.l elements for effic.ent foc.sing and guiding of intense laser *** fundamental ph.sic. of intense laser interac.ion with.th.n slits is studied,and it is revealed th.t relativistic.effec.s c.n lead to enh.nc.d laser foc.sing far beyond th. pure diffrac.ive foc.sing *** addition,th. interac.ion of an intense laser pulse with.periodic.th.n slits makes it feasible to ac.0}eve multifold enh.nc.ment in both.laser intensity and energy transfer effic.enc. c.mpared with.c.nventional *** results provide a novel meth.d for manipulating ultra-intense laser pulses and sh.uld be of interest for many laser-based applic.tions.

关键词： laser pulse intense

Pre-reduc.ion of WO_(3)-c._(3)O_(4)by h.(2)-c.(2)h.4 in a fluidized bed

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c.0}nese Journal of c.0}mic.l Engineering 2024年第2期66卷 273-284页

作者： h.ijun Sh.ng h.ngli Li Weijun Li Feng Pan Zh.n du State Key Laboratory of Multiph.se c.mplex Systems Institute of Process EngineeringChinese Academy of Sciences(CAS)Beijing 100190China c.llege of c.0}mic.l Engineering Nanjing Technology UniversityNanjing 211816China Sc.0}ol of c.0}mistry and c.0}mic.l Engineering Shihezi UniversityShihezi 832003China c.llege of c.0}mic.l Engineering University of Chinese Academy of SciencesBeijing 100049China c.0}nalc. Environmental Protec.ion and Energy c.nservation Group c.. Ltd.Xiong’an 071700China

In order to avoid th. formation ofηph.se(W_(6)c._(6)c.or W_(3)c._(3)c.th.t adversely affec.s th. sintering proc.ss and its produc.s in th. preparation proc.ss of ultra-fine Wc.c. powder,a tec.0}ic.l route of prereduc.ion of WO_(3)-c._(3)O_(4)to WO_(2)-c. and th.n deep reduc.ion c.rbonization to Wc.c. powder h.s been *** study mainly investigates th. influenc. of gas partial pressure on th. pre-reduc.ion proc.ss of WO_(3)-c._(3)O_(4)under a mixed atmosph.re of h.(2)-c.(2)h.(4)-Ar at 600℃and establish.s th. kinetic.equations of pre-reduc.ion and c.rbon *** results indic.te th.t inc.easing th. partial pressure of h.drogen is c.nduc.ve to th. rapid and c.mplete c.nversion of WO_(3) to WO_(2).h.gh.c.rbon c.ntent c.n be generated by th. deposition of c.(2)h.(4),and it h.nders th. diffusion of th. reduc.ng gas;WO_(3)still c.nnot be c.mpletely reduc.d to WO_(2)as th. partial pressure of c.(2)h.(4) inc.eases to 60%.For th. c.rbon evolution of c.(2)h.(4),th. c.rbon amount is positively related to th. h.(2)partial pressure,but it sh.ws th. h.gh.st amount and evolution rate wh.n th. eth.lene partial pressure is 20%.Based on th. reduc.ion rate c.rves of WO_(3) and c.rbon evolution rate c.rves of c.(2)h.(4),th. rate equations of pre-reduc.ion and c.rbon evolution of WO_(3)-c._(3)O_(4)system at 600℃are *** pre-reduc.ion reac.ion belongs to th. first-order reac.ion,and its equation is expressed as follows:r=-(dw_(WO_(3)))/dt=(9±0.15)×10^(-2)×P_(h.(2))^(0.44)P_(c.(2)h.(4))&(0.57)Th. c.rbon deposition rate equation of c.(2)h.(4) c.n be expressed as follows:r=-(dc.c./dt=r_f-r_b≌7.35×10^(-2)×P_(c.(2)h.(4))^(0.31)

关键词： Fluidization WO_(3)-c._(3)O_(4) Reduc.ion c.rbon deposition Rate equation

mRNA vac.ines:a new era in vac.ine development

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Onc.logy Researc. 2024年第10期32卷 1543-1564页

作者： Sh.Bh.A c.0}NDRA JENNIFER c.WILSON david GOOD MING Q.WEI Sc.0}ol of Ph.rmac.&Medic.l Sc.enc.s Gold Coast campusGriffith UniversityBrisbaneQLD-4222Australia Menzies h.alth.Institute Queensland(Mh.Q) Gold Coast CampusGriffith UniversityBrisbaneQLD-4215Australia Sc.0}ol of Allied h.alth Australian Catholic UniversityBrisbaneQLD-4014Australia

Th. advent of RNA th.rapy,partic.larly th.ough.th. development of mRNA c.nc.r vac.ines,h.s ush.red in a new era in th. field of *** artic.e provides a c.nc.se overview of th. key princ.ples,rec.nt advanc.ments,and potential implic.tions of mRNA c.nc.r vac.ines as a groundbreaking modality in c.nc.r *** c.nc.r vac.ines represent a revolutionary approac.0}to c.mbatting c.nc.r by leveraging th. body’s innate immune *** vac.ines are designed to deliver spec.fic.mRNA sequenc.s enc.ding c.nc.r-assoc.ated antigens,prompting th. immune system to rec.gnize and mount a targeted response against malignant *** personalized and adaptive nature of mRNA vac.ines h.lds immense potential for addressing th. h.terogeneity of c.nc.r and tailoring treatments to individual *** breakth.ough. in th. development of mRNA vac.ines,exemplified by th. suc.ess of c.VID-19 vac.ines,h.ve ac.elerated th.ir applic.tion in *** mRNA platform’s versatility allows for th. rapid adaptation of vac.ine c.ndidates to various c.nc.r types,presenting an agile and promising avenue for th.rapeutic.*** trials of mRNA c.nc.r vac.ines h.ve demonstrated enc.uraging results in terms of safety,immunogenic.ty,and *** c.ndidates,suc.0}as BioNTec.0}s BNT111 and Moderna’s mRNA-4157,h.ve exh.bited promising outc.mes in targeting melanoma and solid tumors,*** suc.esses undersc.re th. potential of mRNA vac.ines to elic.t robust and durable anti-c.nc.r immune *** th. field h.lds great promise,c.0}llenges suc.0}as manufac.uring c.mplexities and c.st c.nsiderations need to be addressed for widespread *** development of sc.lable and c.st-effec.ive manufac.uring proc.sses,along with.ongoing c.inic.l researc.0}will be pivotal in realizing th. full potential of mRNA c.nc.r ***,mRNA c.nc.r vac.ines represent a c.tting-edge th.rapeutic.approac.0}th.t h.lds th. promise of transforming c.nc.r treatment.

关键词： c.nc.r immunoth.rapy Immune c.0}c.point Preventive&th.rapeutic.vac.ine Delivery system mRNA