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Heterobimetallic lan.han.de tetrahedral cages:Syn.hesis,design.an. application.for poten.ial multimodal imagin. con.rast agen.

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Journ.l of Rare Earths 2024年第2期42卷 278-285,I0002页

作者： Yon.xiu li Fen. Guo Siwei Wei Duofu li Jun.Zhan. Kai Xu Don.pin. li Departmen. of Chemistry Nanchang UniversityNanchang330031China Key Laboratory of Fun.tion.l Molecule Design.an. In.erface Process Anhui Jianzhu UniversityHefei230601China Departmen. of Otolaryn.ology Head and Neck SurgeryThe Second Affiliated Hospital of Nanchang UniversityNanchang330006China

The con.truction.an. fun.tion.lization.of lan.han.de-organ.c cages have been.a research hotspot in.coordin.tion.*** from the un.que lumin.scen. an. magn.tic properties of lan.han.de ion.,the poten.ial application. of lan.han.de-organ.c cages in.biological imagin. application. are promisin.,but on.y a few correspon.in. exploration. have been.*** rein.we in.roduced a series of lan.han.de tetrahedral cages,(Eu_(n.Gd_(4-n.L_(4))(sol)_8(n.0,1,2,3 an. 4,where L=(4,4',4"-tris(4,4,4-trifluoro-1,3-dioxobutyl)-triphen.lamin.,an. sol=dimethyl sulfoxide an. methan.l),with poten.ial application. in.biological *** the good lumin.scen. an. magn.tic properties of Eu^(3+) an. Gd^(3+) ion.,Eu_(4)L_(4) an. Gd_(4)L_(4) complexes show a high lumin.scen.e quan.um yield of 29% in.DMSO an. large lon.itudin.l relaxivity(r_(1)) of 11.4(mmol/L)^(-1)/s at 0.5 T in.water con.ain.n. 1 vol% DMSO,*** heterobimetallic Eu-Gd complexes achieve a dual imagin. mode by combin.n. lumin.scen. an. magn.tic cen.ers in.on. *** the Gd:Eu ratio in.reases from 1:3 to 3:1,the r_(1) values in.reases from 5.33 to 8.64(mmoI/L)^(-1)/s,higher than.that of commercial con.rast agen. Gd-DOTA(3.23(mmol/L)^(-1)/s).Owin. to their low toxicity an. good cell imagin. ability toward ECA 109 cells,the selfassembled Eu-Gd heterobimetallic tetrahedral cages could be poten.ial can.idates for the multimodal imagin. con.rast agen..

关键词： Lan.han.de organ.c cage Lumin.scen.e Cell imagin. Con.rast agen.s Rare earths

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Un.on.en.ion.l Fluorescen. an. Multi-respon.ive Polyethylen.imin. with LCST an. UCST Behavior:Syn.hesis,Characterization.an. Biological Application.

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Chin.se Journ.l of Polymer Scien.e 2024年第6期42卷 826-837页

作者： Fen.-Min. Yin.li-li Wu Shu-Shen. li Xiao-n. Pan.Xiao-li Zhu Xu-Bao Jian. Xian. Zhen. Kon. College of Chemistry an. Chemical En.in.erin. University of JinanJinan250022China Shan.on. In.titute for Product Quality In.pection Jinan250102China College of Chemical En.in.erin. Tianjin UniversityTianjin300072China

n.n.aromatic fluorescen. an. multi-respon.ive materials,exhibitin. in.eren. fluorescen.e emission.an. con.rolled phase chan.e,have garn.red sign.fican. atten.ion.in.recen. ***,the un.erlyin. in.eraction.between.their fluorescen. properties an. phase tran.ition.remain. *** this study,we syn.hesized a series of catalyst-free aza-Michael addition.based polyethylen.imin.(RFPEI)materials by reactin. polyethylen.imin.(PEI)with n.isopropyl acrylamide(n.PAM).The resultin. RFPEI was comprehen.ively characterized,an. demon.trated dual-phase tran.ition.behavior(LCST an. UCST)in.water,which could be fin.ly tun.d by adjustin. its composition.or extern.l factors such as ***,upon.UV irradiation.365 n.),RFPEI exhibited stron. fluorescen.e *** further in.estigated the effects of n.PAM graftin. percen.age to PEI,polymer con.en.ration.an. pH on.the LCST/UCST an. fluorescen. properties of RFPEI aqueous ***,we showcased the great poten.ial of RFPEI as a versatile tool for physiological cell imagin.,trace detection.an. con.rolled release of *** study presen.s a n.vel class of stimuli-respon.ive fluorescen. materials with promisin. application. in.the field of biomedicin..

关键词： Polyethylen.imin. Multi-respon.iven.ss In.rin.ic fluorescen.e emission Cell imagin. Con.rolled drug release

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Optimal pivot path of the simplex method for lin.ar programmin. based on.rein.orcemen. learn.n.

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Scien.e Chin. Mathematics 2024年第6期67卷 1263-1286页

作者： An.i li Tian.e Guo Con.yin. Han.Bon.n.li Haoran.li School of Mathematical Scien.es University of Chinese Academy of SciencesBeijing100049China

Based on.the existin. pivot rules,the simplex method for lin.ar programmin. is n.t polyn.mial in.the worst ***,the optimal pivot of the simplex method is *** this paper,we propose the optimal rule to fin. all the shortest pivot paths of the simplex method for lin.ar programmin. problems based on.Mon.e Carlo tree ***,we first propose the SimplexPseudoTree to tran.fer the simplex method in.o tree search mode while avoidin. repeated basis ***,we propose four rein.orcemen. learn.n. models with two action. an. two rewards to make the Mon.e Carlo tree search suitable for the simplex ***,we set a n.w action.selection.criterion.to ameliorate the in.ccurate evaluation.in.the in.tial *** is proved that when.the n.mber of vertices in.the feasible region.is C_(n.^(m),our method can.gen.rate all the shortest pivot paths,which is the polyn.mial of the n.mber of *** addition.we experimen.ally validate that the proposed schedule can.avoid un.ecessary search an. provide the optimal pivot ***,this method can.provide the best pivot labels for all kin.s of supervised learn.n. methods to solve lin.ar programmin. problems.

关键词： simplex method lin.ar programmin. pivot rules rein.orcemen. learn.n.

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Effect of Al_(2)O_(3)on.the Mechan.cal Properties of(B_(4)C+Al_(2)O_(3))/Al n.utron.Absorbin. Materials

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Acta Metallurgica Sin.ca(En.lish Letters) 2024年第8期37卷 1411-1420页

作者： J.X.Cai B.M.Shi n.li Y.liu Z.G.Zhan. Y.n.Zan.Q.Z.Wan. B.L.Xiao Z.Y.Ma Shi‑Chan.xu In.ovation.Cen.er for Advan.ed Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key Laboratory of n.clear Materials an. Safety Assessmen. Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China n.clear Equipmen. Division Beijing Institute of Nuclear EngineeringChina Nuclear Power Engineering Co.Ltd.Beijing 100840China Departmen. of Materials Scien.e School of Mechanical EngineeringShenyang UniversityShenyang 110044China

B_(4)C/Al composites are widely utilized as n.utron.absorbin. materials for the storage an. tran.portation.of spen. n.clear *** order to improve the high-temperature mechan.cal properties of B_(4)C/Al composites,in.situ n.n.-Al_(2)O_(3)was in.roduced utilizin. oxide on.Al powder *** this study,the Al_(2)O_(3)con.en. was adjusted by utilizin. spheroid Al powder with varyin. diameters,thereby in.estigatin. the impact of Al_(2)O_(3)con.en. on.the ten.ile properties of(B_(4)C+Al_(2)O_(3))/Al *** was foun. that the pin.in. effect of Al_(2)O_(3)on.the grain.boun.aries could hin.er the recovery of dislocation. an. lead to dislocation.accumulation.at high *** the result,with the in.rease in.Al_(2)O_(3)con.en. an. the decrease in.grain.size,the high-temperature stren.th of the composites in.reased *** fin.st Al powder used in.this in.estigation.had a diameter of 1.4μm,whereas the resultan. composite exhibited a maximum stren.th of 251 MPa at room temperature an. 133 MPa at 350℃,surpassin. that of tradition.l B_(4)C/Al composites.

关键词： Al matrix composites n.utron.absorbin. materials (B_(4)C+Al_(2)O_(3))/Al composites High-temperature stren.th

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Un.on.en.ion.l Fluorescen. an. Multi-respon.ive Polysiloxan.:Syn.hesis,Characterization.an. Biological Application.

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Chin.se Journ.l of Polymer Scien.e 2024年第5期42卷 579-590,I0006页

作者： Xiao-Di li Shu-Shen. li Xu-Bao Jian. Xiao-li Zhu Xian. Zhen. Kon. College of Chemistry an. Chemical En.in.erin. University of JinanJinan250022China College of Chemical En.in.erin. Tianjin UniversityTianjin300072China Foshan.Southern.Chin.)In.titute for n.w Materials Foshan528200China

Owin. to their high sign.fican.e in.fun.amen.al study an. diverse application.,stimuli-respon.ive an. fluorescen. polymers,particularly those with cluster-triggered emission.CTE)featured by n.n.con.ugated chromophores,have drawn.tremen.ous atten.ion.in.recen. *** this work,fluorescen. an. multi-respon.ive polysiloxan.(FRPS)was syn.hesized by hydrolytic con.en.ation.polymerization.of 3-amin.propyl methyl diethoxysilan.(APMS)with 3-(n.isopropyl propion.mide)imin.propyl methyl diethoxysilan.(APMS-n.P),which was formed in.situ through aza-Michael addition.between.APMS an. n.isopropyl *** was n.t on.y highly sen.itive to temperature,pH an. CO_(2) in.water,but also showed an.en.an.ed an. stimuli-adjustable fluorescen.e *** effects of mon.mer feedin.,pH an. CO_(2) on.its lower critical solution.temperature an. fluorescen. property were *** fluorescen.e emission.was ascribed to CTE *** addition.FRPS was shown.to be highly poten.ial as physiological in.icator for cell imagin.,an. for con.rolled release an. trace detection.of *** study provides therefore a type of stimuli-respon.ive an. fluorescen. material for poten.ial application. in.biomedical fields,an. it is also of great sign.fican.e for un.erstan.in. of the fluorescen.e mechan.sm of polysiloxan.-based stimuli-respon.ive polymers.

关键词： Polysiloxan. Multi-respon.iven.ss Cluster-triggered emission Cell imagin. Con.rolled drug release

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Developmen. in.oxide metallurgy for improvin. the weldability of high -stren.th low-alloy steel-Combin.d deoxidizers an. microalloyin. elemen.s

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In.ern.tion.l Journ.l of Min.rals,Metallurgy an. Materials 2024年第6期31卷 1263-1284页

作者： Tin.tin. li Jian.Yan. State Key Laboratory of Advan.ed Special Steel School of Materials Science and EngineeringShanghai UniversityShanghai 200444China

The mechan.sms of oxide metallurgy in.lude in.ucin. the formation.of in.ragran.lar acicular ferrite(IAF)usin. micron.sized in.lusion. an. restrictin. the growth of prior austen.te grain.(PAGs)by n.n.sized particles durin. *** chaotically orien.ed IAF an. refin.d PAGs in.ibit crack in.tiation.an. propagation.in.the steel,resultin. in.high impact *** work summarizes the com-bin.d effect of deoxidizers an. alloyin. elemen.s,with the aim to provide a n.w perspective for the research an. practice related to im-provin. the impact toughn.ss of the heat affected zon.(HAZ)durin. the high heat in.ut *** complex deoxidation.with other stron. deoxidan.s,such as Mg,Ca,Zr,an. rare earth metals(REMs),can.improve the toughn.ss of the heat-affected zon.(HAZ)by re-fin.n. PAGs or in.reasin. IAF ***,it is difficult to iden.ify the specific phase respon.ible for IAF n.cleation.because ef-fective in.lusion. formed by complex deoxidation.are usually *** alloyin. elemen.s,such as C,Si,Al,n.,or Cr,con.ten.s can.impair HAZ toughn.ss.A high C con.en. typically in.reases the n.mber of coarse carbides an. decreases the poten.y of IAF ***,Cr,or Al addition.leads to the formation.of un.esirable *** reduces the high-temperature stability of the ***,V,an. B can.en.an.e HAZ ***-con.ain.n. precipitates presen. good thermal *** or V(C,n.is ef-fective in.promotin. IAF n.cleation.due to its good coheren. crystallographic relation.hip with *** formation.of the B-depleted zon. aroun. the in.lusion.promotes IAF *** in.eraction. between.alloyin. elemen.s are complex,an. the effect of addin. dif-feren. alloyin. elemen.s remain. to be *** the future,the in.eraction. between.various alloyin. elemen.s an. their effects on.ox-ide metallurgy,as well as the calculation.of the n.cleation.effects of effective in.lusion. usin. first prin.iples calculation. will become the focus of

关键词： oxide metallurgy techn.logy heat affected zon. high-stren.th low-alloy steel in.ragran.lar acicular ferrite microalloyin. elemen.

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VOC emitted by biopharmaceutical in.ustries:Source profiles,health risks,an. secon.ary pollution

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Journ.l of En.iron.en.al Scien.es 2024年第1期135卷 570-584页

作者： Jiawei Ma lin.li State Key Laboratory of En.iron.en.al Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Un.versity of Chin.se Academy of Scien.es Beijing 100049China n.tion.l En.in.erin. Laboratory for VOCs Pollution.Con.rol Material&Techn.logy University of Chinese Academy of SciencesBeijing 101408China

The biopharmaceutical in.ustry con.ributes substan.ially to volatile organ.c compoun.s(VOCs)emission.,causin. growin. con.ern. an. social developmen.al *** study con.ucted an.on.site in.estigation.of the process-based emission.of VOCs from three biopharmaceutical *** the workshops of the three en.erprises,26 VOCs were detected,which could be sorted in.o 4 classes:hydrocarbon.,aromatic hydrocarbon.,oxygen.con.ain.n. compoun.s,an. n.trogen.con.ain.n. *** were the main.compon.n.s of waste gases,accoun.in. for 44.13%-77.85%of the overall ***-based source profiles were compiled for each process un.t,with the fermen.ation.an. extraction.un.ts of tiamulin.fumarate bein. the main.source of VOC *** heptan.n.,vin.l acetate,diethylamin.,propylen. glycol methyl ether(PGME),an. ben.en. were screen.d as priority pollutan.s through a fuzzy comprehen.ive evaluation.*** level con.en.ration.simulation.results of the Gauss plume diffusion.model demon.trated that the diffusivity of VOCs in.the atmosphere was relatively high,in.icatin. poten.ial n.n.carcin.gen.c an. carcin.gen.c risks 1.5-2 km ***,the process-based formation.poten.ials of ozon. an. secon.ary organ.c aerosols(SOAs)were determin.d an. in.icated that n.methyl-2-pyrrolidon.,dimethyl heptan.n.,an. PGME should be preferen.ially con.rolled to reduce the ozon. formation.poten.ial,whereas the con.rol of ben.en. an. chloroben.en. should be prioritized to reduce the gen.ration.of *** results provide a basis for un.erstan.in. the characteristics of VOC emission.by biopharmaceutical in.ustries an. their diffusion.poten.ially allowin. the developmen. of measures to reduce health risks an. secon.ary pollution.

关键词： Biopharmaceutical Volatile organ.c compoun. Priority pollutan. Exposure risk Secon.ary pollution

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In.ight in.o the adsorption.behavior an. mechan.sm of trace impurities from H_(2)O_(2) solution.on.fun.tion.lized zircon.a by tun.n. the structure of amin. groups

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Fron.iers of Chemical Scien.e an. En.in.erin. 2024年第5期18卷 83-94页

作者： Yu Men. Yiton. Wan. Guozhu li Guozhu liu li Wan. Key Laboratory for Green.Chemical Techn.logy of Min.stry Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Haihe Laboratory of Sustain.ble Chemical Tran.formation. Tianjin 300192China

Primary,secon.ary an. tertiary amin.-fun.tion.lized zircon.a(ZrO_(2)-n._(2),ZrO_(2)-n. an. ZrO_(2)-n.was syn.hesized by the postgraftin. method for the adsorption.removal of typical metallic ion.,phosphate an. total oxidizable carbon.from a real H_(2)O_(2) ***_(2)-n._(2),ZrO_(2)-n. an. ZrO_(2)-n.exhibited similar pore sizes an. sequen.ially in.reased zeta *** adsorption.results of sin.le an. bin.ry simulated solution. showed that the removal efficien.y in.reased in.the order of Fe^(3+)>Al^(3+)>Ca^(2+)>n.^(+).There is competitive adsorption.between.metallic ion.,an. Fe^(3+) has an.advan.age over the other metals,with a removal efficien.y of 90.7%.The coexistin. phosphate could promote the adsorption.of metallic ion.,while total oxidizable carbon.had n. effect on.*** adsorption.results of the real H_(2)O_(2)solution.showed that ZrO_(2)-n._(2) exhibited the best adsorption.affin.ty for metallic ion.,as did phosphate an. total oxidizable carbon.with a total adsorption.capacity of 120.9 mg·g_(-1).Den.ity fun.tion.l theory calculation. revealed that the adsorption.process of metallic ion. in.olves electron.tran.fer from n.atoms to metals an. the formation.of n.metal bon.s.

关键词： adsorption metallic ion phosphate total oxidizable carbon zircon.a H_(2)O_(2)

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Magn.tic an. lumin.scen. properties of bifun.tion.l composite Fe_(3)O_(4)@Y_(2)O_(2)S:Eu^(3+)

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Journ.l of Rare Earths 2024年第8期42卷 1568-1576,I0006页

作者： Zhiqi lian. Zhili Zhan. liu li Wen.Xu Decai li School of Mechan.cal Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing100044China Beijin. Key Laboratory of Flow an. Heat Tran.fer of Phase Chan.in. in.Micro an. Small Scale Beijing100044China State Key Laboratory of Tribology Tsinghua UniversityBeijing100084China

As a kin. of n.n.destructive testin. method,magn.tic particle in.pection.is widely used in.the fields of aviation.an. high-speed *** properties of magn.tic fluorescen. bifun.tion.l composites,such as fluorescen.e in.en.ity an. magn.tic properties,have in.reasin. deman.s in.magn.tic particle *** earth compoun.s offer poten.ial as n.vel materials for fluorescen. magn.tic bifun.tion.l composites due to their excellen. optical properties an. extremely n.rrow emission.*** this work,the rare earth fluorescen. material Y_(2)O_(2)S:Eu^(3+) was syn.hesized by solid-state reaction.***_(3)O_(4)n.n.particles prepared by hydrothermal method were un.formly coated on.the Y_(2)O_(2)S:Eu^(3+) particles through physical adsorption.of *** obtain.d Fe_(3)O_(4)@Y_(2)O_(2)S:Eu^(3+) exhibits dark red color un.er the ultraviolet *** additio n.X-ray diffractio n.morphology,photolumin.scen.e an. hyste resis loop of Fe_(3)O_(4)@Y_(2)O_(2)S:Cu^(3+) were *** lumin.scen.e mechan.sm of Y_(2)O_(2)S:Eu^(3+) is described in.detail Fe_(3)O_(4)@Y_(2)O_(2)S:Cu^(3+) displays good paramagn.tism an. has a good con.rollability un.er a magn.tic *** magn.tic particle in.pection.of Fe_(3)O_(4)@Y_(2)O_(2)S:Eu^(3+) was performed usin. a 4-pole electromagn.t an. a test piece *** magn.tic fluorescen. bifun.tion.l composite presen.ed in.this work can.be applied for n.n.destructive testin..

关键词： Bifun.tion.l material Fe_(3)O_(4) Y_(2)O_(2)S:Eu^(3+) Lumin.scen.e Solid-state reaction Rare earths

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Strategies of selective electroreduction.of aqueous n.trate to n.(2) in.chloride-free system:A critical review

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Green.En.rgy & En.iron.en. 2024年第2期9卷 198-216页

作者： Fukuan.li Weizhe Zhan. Pen. Zhan. Ao Gon. Kexun.li College of En.iron.en.al Scien.e an. En.in.erin. Nankai UniversityTianjin300350China MOE Key Laboratory of Pollution.Processes an. En.iron.en.al Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution ControlTianjin Key Laboratory of Environmental Technology for Complex Trans-Media PollutionNankai UniversityTianjin300350China

Electroreduction.of n.trate has been.gain.n. wide atten.ion.in.recen. years owin. to it's ben.ficial for con.ertin. n.trate in.o ben.gn.n.(2) from the perspective of electrocatalytic den.trification.or in.o value-added ammon.a from the perspective of electrocatalytic n._(3) *** reason.of the un.esired formation.of ammon.a is domin.n. durin. electroreduction.of n.trate-con.ain.n. wastewater,chloride has been.widely used to improve n.(2) ***,selective electroreduction.of n.trate to n. gas in.chloride-con.ain.n. system poses several *** this review,we focus on.the key strategies for efficien.ly en.an.in. n.(2) selectivity of electroreduction.of n.trate in.chloride-free system,in.ludin. optimal selection.of elemen.s,combin.n. an.active metal catalyst with an.ther metal,man.pulatin. the crystallin. morphology an. facet orien.ation.con.tructin. core–shell structure catalysts,*** summarizin. the strategies,four possible reaction.pathways of electro-reduction.of n.trate to n.(2) are ***,this review attempts to provide practical strategies for en.an.in. n. selectivity without the aid of electrochlorin.tion.an. highlight direction. for future research for design.n. appropriate electrocatalyst for fin.l electrocatalytic den.trifi-cation.

关键词： n.trate Chloride Electroreduction Selectivity n.trogen

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