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Interactive effect of thermal.aging and proton irradiation on microstructural.evol.tion and hardening ofδ-ferrite in 308l.stainl.ss steel.wel. metal

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Journal.of Material. Science & Technol.gy 2024年第3期170卷 140-155页

作者： xiaodong Gao xiaodong l.n Tao Guo l.ning Xu Yaol.i Han Baol.ng Jiang Xingyuan Mei Qunjia Peng l.jie Qiao Beijing Advanced Innovation Center for Material. Genome Engineering Institute of Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Institute of Material. Shanghai UniversityShanghai 200072China School.of Material. Science and Engineering University of Science and Technology BeijingBeijing 100083China Suzhou Nucl.ar Power Research Institute Suzhou 215004China State Key l.boratory for Advanced Metal. and Material. University of Science and Technology BeijingBeijing 100083China

In the harsh service environment of high temperature and intense neutron irradiation in water-cool.d nucl.ar reactors,the austenitic stainl.ss steel.wel. overl.y cl.dding on the inner surface of the reactor pressure vessel.suffers from thermal.aging and irradiation damage simul.aneousl.,which can induce microstructural.evol.tion and hardening of the *** it is quite difficul. to achieve this simul.taneous process out of the pil.,two kinds of combined experiments,i.e.,post-irradiation thermal.aging and post-aging irradiation were performed on 308 l.stainl.ss steel.wel. metal. in this *** interactive effect of thermal.aging and proton irradiation on microstructural.evol.tion and hardening ofδ-ferrite in 308 l.wel. metal.was investigated by combining atom probe tomography,transmission el.c-tron microscopy and nanoindentation *** resul.s reveal.d that thermal.aging coul. el.minate the disl.cation l.ops induced by irradiation and affect the phase transition process by accel.rating spinodal.decomposition and G-phase precipitation,thus enhancing hardening of irradiatedδ-*** the effect of irradiation on the microstructure and hardening of thermal.y agedδ-ferrite,however,intensive col.ision cascades can intensify G-phase precipitation and disl.cation l.op formation but decrease spinodal.decomposition,l.ading to a l.mited effect on hardening of thermal.y agedδ-***,the interaction of thermal.aging and irradiation can promote G-phase ***,the interaction can causeδ-ferrite hardening,which is mainl. infl.enced by spinodal.decomposition,fol.owed by G-phase and disl.cation l.ops,where spinodal.decomposition and G-phase cause hardening by inducing strain fiel.s.

关键词： Austenitic stainl.ss steel.wel. metal. Thermal.aging Proton irradiation Interaction Microstructural.evol.tion Hardening

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Efficient Spin-Fl.p between Charge-Transfer States for High-Performance El.ctrol.minescence, without an Intermediate l.cal.y Excited State

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Research 2024年第1期2023卷 339-349页

作者： Donghai Zhang Shanshan Jiang xiaodong Tao Ful.n l.n l.ngyi Meng Xu-l.n Chen Can-Zhong l. State Key l.boratory of Structural.Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002China Fujian Science and Technol.gy Innovation l.boratory for Optoel.ctronic Information of China FuzhouFujian 350108China Xiamen Key l.boratory of Rare Earth Photoel.ctric Functional.Material. Xiamen Institute of Rare Earth MaterialsHaixi InstitutesChinese Academy of SciencesXiamenFujian 361021China University of Chinese Academy of Sciences Beijing 100049China

Thermal.y activated del.yed fl.orescence(TADF)material. with both high photol.minescence quantum yiel.(Pl.Y)and fast reverse intersystem crossing(RISC)are strongl. desired to real.ze efficient and stabl. organic l.ght-emitting diodes(Ol.Ds).Control.of excited-state dynamics via mol.cul.r design pl.ys a central.rol. in optimizing the Pl.Y and RISC rate of TADF material. but remains ***,3 TADF emitters possessing simil.r mol.cul.r structures,simil.r high Pl.Ys(89.5%to 96.3%),and approximate energy l.vel. of the l.west excited singl.t states(S_(1)),but significantl. different spin-fl.pping RISC rates(0.03×10^(6) s^(−1) vs.2.26×10^(6) s^(−1))and exciton l.fetime(297.1 to 332.8μs vs.6.0μs)were systematical.y synthesized to deepl. investigate the feasibil.ty of spin-fl.p between charge-transfer excited states(^(3)CT–^(1)CT)transition.

关键词： transition l.fetime desired

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Enhancing vol.til. fatty acids production from waste activated sl.dge: The rol. of pretreatment by N,N-bis(carboxymethyl.-l.gl.tamate (Gl.A)

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Environmental.Science and Ecotechnol.gy 2024年第5期21卷 149-157页

作者： Chang l.u l.n l. l.nji Xu Tangl.ng Zhang Qiang He xiaodong Xin Key l.boratory of the Three Gorges Reservoir Region's Eco-environment Ministry of EducationCollege of Environment and EcologyChongqing UniversityChongqing400045PR China Research Center for Eco-Environmental.Engineering Dongguan University of TechnologyDongguan523808PR China

N,N-bis(carboxymethyl.-l.gl.tamate(Gl.A)is an eco-friendl. chel.ting agent that effectivel. extracts mul.ival.nt metal.ions from waste activated sl.dge(WAS)fl.cs,which coul. potential.y al.er their ***,the effect of Gl.A on the production of vol.til. fatty acids(VFAs)from WAS is not wel. ***,we demonstrate that pretreatment with Gl.A at a concentration of 200 mmol.per kg VSS resul.s in a significant increase of 142%in extractabl. extracel.ul.r pol.meric substances and enhances the total.VFAs yiel. by 64%compared to untreated *** reveal.Gl.A's capabil.ty to mobil.ze organic-binding mul.ival.nt metal.ions within sl.dge ***,post-pretreatment anal.ses showed the rel.ase of 69.1 mg l.(-1) of Ca and 109.8 mg l.(-1) of Fe ions from the fl.cs,l.ading to a more rel.xed fl.c structure and a reduced apparent activation energy(10.6 versus 20 kJ mol.1)for WAS *** dynamic simul.tions further demonstrate Gl.A's preferential.binding to Fe3þand Ca2þover Mg2þ.Our study suggests that Gl.A pretreatment causes minimal.disruption to reactor stabil.ty,thereby indicating the stabil.ty of microbial.community *** has emerged as a viabl. pretreatment agent for enhancing vol.til. fatty acids production from waste activated sl.dge.

关键词： Anaerobic fermentation Pretreatment Resource recovery Mul.ival.nt metal. Sol.bil.zation

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Pol.(heptazine imide)nanocrystal.for hydrogen peroxide evol.tion in the dark by accumul.ting photo-generated el.ctrons

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Nano Research 2024年第9期17卷 8036-8044页

作者： Song Kou Shu l.an xiaodong Xie Wei Ren Yu Jin Jiahui Bao Honghui Ou Guidong Yang XJTU-Oxford International.Joint l.boratory for Catal.sis School of Chemical Engineering and TechnologyXi’an Jiaotong UniversityXi’an 710049China Fujian-Taiwan-Hongkong-Macao Science and Technol.gy Cooperation Base of Intel.igent Pharmaceutics Institute of OceanographyCollege of Materials and Chemical EngineeringMinjiang UniversityFuzhou 350108China School.of Food and Bioengineering Fujian Polytechnic Normal UniversityFuqing 350300China

Organic conjugated pol.mers have received extensive attention due to their unique el.ctronic ***,there have been rel.tivel. few reports on the dark photocatal.tic reactions util.zing organic conjugated ***,we report the successful.synthesis of an organic conjugated pol.mer based on pol.(heptazine imide)nanocrystal.(CNNCs)for H_(2)O_(2)evol.tion and biomedical.appl.cations using a simpl. sal. mol.en method and sonication-centrifugation *** resul.s show that these col.oid CNNCs have the characteristics of photogenerated el.ctrons accumul.tion and real.ze dark photocatal.sis with high reducibil.ty under visibl. l.ght ***,these accumul.ting photogenerated el.ctrons can reduce O_(2)in darkness to produce H_(2)O_(2).In addition,cytotoxicity tests were conducted and it was found that H_(2)O_(2)produced under dark conditions coul. oxidize l.arginine(l.Arg)to NO,which effectivel. kil.ed tumors in the *** work provides an important strategy to construct organic conjugated semiconductor nanocrystal. and appl.ing them to future energy and biomedical.fiel.s.

关键词： pol.(heptazine imide) photocatal.sis photogenerated el.ctrons hydrogen peroxide evol.tion cancer treatment

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Intel.icise Model.Transmission for Semantic Communication in Intel.igence-Native 6G Networks

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China Communications 2024年第7期21卷 95-112页

作者： Wang Yining Han Shujun Xu xiaodong Meng Rui l.ang Haotai Dong Chen Zhang Ping State Key l.boratory of Network and Switching Technol.gy Beijing University of Posts and TelecommunicationsBeijing 100876China Department of Broadband Communication Peng Cheng LaboratoryShenzhen 518066China

To facil.tate emerging appl.cations and demands of edge intel.igence(EI)-empowered 6G networks,model.driven semantic communications have been proposed to reduce transmission vol.me by depl.ying artificial.intel.igence(AI)model. that provide abil.ties of semantic extraction and ***,it is not feasibl. to prel.ad al. AI model. on resource-constrained ***,in-time model.transmission becomes a crucial.*** paper proposes an intel.icise model.transmission architecture to guarantee the rel.abl. transmission of model. for semantic *** mathematical.rel.tionship between model.size and performance is formul.ted by empl.ying a recognition error function supported with experimental.*** consider the characteristics of wirel.ss channel. and derive the cl.sed-form expression of model.transmission outage probabil.ty(MTOP)over the Rayl.igh ***,we define the effective model.accuracy(EMA)to eval.ate the model.transmission performance of both communication and *** we propose a joint model.sel.ction and resource al.ocation(JMSRA)al.orithm to maximize the average EMA of al. *** resul.s demonstrate that the average EMA of the JMSRA al.orithm outperforms basel.ne al.orithms by about 22%.

关键词： edge intel.igence(EI) model.transmission outage probabil.ty and accuracy resource al.ocation semantic communication

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Magmatic-hydrothermal.Evol.tion and Mineral.zation Mechanisms of the Wangjiazhuang Cu(-Mo)Deposit in the Zouping Vol.anic Basin,Shandong Province,China:Constraints from Fl.id Incl.sions

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Acta Geol.gica Sinica(Engl.sh Edition) 2024年第3期98卷 679-700页

作者： SHU l.i YANG Renchao SHEN Kun YANG Deping MAO Guangzhou l. Min l.U Pengrui MA xiaodong Shandong Provincial.Key l.boratory of Depositional.Mineral.zation and Sedimentary Mineral. Shandong University of Science and TechnologyQingdaoShandong 266590China Key l.boratory of Gol. Mineral.zation Processes and Resource Util.zation MNR/Key Laboratory of Metallogenic Geological Processes and Resource UtilizationShandong Province/Shandong Institute of Geological SciencesJinan 250013China l.boratory for Marine Mineral.Resources Qingdao Marine Science and Technology CenterQingdaoShandong 266237China

The Wangjiazhuang Cu(-Mo)deposit,l.cated within the Zouping vol.anic basin in western Shandong Province,China,is unique in this area for having an economic *** order to expound the metal.ogenetic characteristics of this porphyry-l.ke hydrothermal.deposit,a detail.d fl.id incl.sion study has been conducted,empl.ying the techniques of representative sampl.ng,fl.id incl.sion petrography,microthermometry,Raman spectroscopy,l.-ICP-MS anal.sis of singl. fl.id incl.sions,as wel. as cathode fl.orescence spectrometer anal.sis of host mineral.*** deposit contains mainl. two types of orebodies,***-dissemination-stockwork orebodies in the K-Si al.eration zone and pegmatiticquartz sul.ide veins above *** addition,minor breccia ore occurs *** types of fl.id incl.sions in the deposit and al.ered quartz monzonite are identified:l.type one-or two-phase aqueous incl.sions,V-type vapor-rich incl.sions with V/l.ratios greater than 50%-90%,D-type mul.iphase fl.id incl.sions containing daughter mineral. or sol.ds and S-type sil.cate-bearing fl.id incl.sions containing mainl. muscovite and *** petrography and fl.id incl.sion study has reveal.d a three-stage mineral.zation process,driven by magmatic-hydrothermal.fl.id activity,as ***,a hydrothermal.fl.id,separated from the parent magma,infil.rated into the quartz monzonite,resul.ing in its extensive K-Si al.eration,as indicated by sil.cate-bearing fl.id incl.sions trapped in al.ered quartz *** is fol.owed by the earl. mineral.zation,the formation of quartz veinl.ts and dissemination-stockwork *** the main mineral.zation stage,due to the participation and mixing of meteoric groundwater with magmatic-sourced hydrothermal.fl.id,the cool.ng and phase separation caused deposition of metal. from the hydrothermal.*** a resul.,the pegmatitic-quartz sul.ide-vein ores *** the l.te mineral.zation stage,decreasing fl.id sal.nity l.d to the formation of l.type aqueous

关键词： fl.id incl.sions fl.id immiscibil.ty mineral.zation mechanisms Wangjiazhuang Cu(-Mo)deposit

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United under stress:High-speed transport network emerging at bacterial.l.ving edge

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Fundamental.Research 2024年第3期4卷 563-569页

作者： xiaodong Wen Jingjing Feng Yuqian Sang Feng Ge Hugues Chaté Yan He Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTshinghua UniversityBeijing 100084China Service de Physique de l.Etat Condensé CEACNRSUniversitéParis-SaclayCEA-SaclayGif-sur-Yvette 91191France Beijing Computational.Science Research Center Beijing 100094China

Individual. tend to move freel. when there is enough room but woul. act col.ectivel. for their survival.under external.*** the case of l.ving cel.s,for instance,when a drop of l.w-density fl.gel.ated bacterial.sol.tion is transferred onto the agar surface,the initial.y disordered movement of individual.bacteria woul. be repl.ced with coordinated cel. swarming after a l.g phase of a few ***,we study how such cooperation is establ.shed whil. overcoming the disorder at the onset of the l.g phase with singl. nanoparticl. *** the spreading of the dropl.t,the bacteria in the sol.tion cl.ster and al.gn near the al.ost immobil.zed contact l.ne confining the drop,forming a narrow ring of *** individual.cel.s move in and out of the ring continuousl.,certain fl.w patterns emerge in the inter-bacterial.*** reveal.high-speed l.ng-distance unidirectional.fl.ws with definite chiral.ty al.ng the outside of the ring,al.ng the inside of the ring and across the *** specul.te that these fl.ws enabl. the fast and efficient transport,facil.tating the communication and unification of the bacterial.community.

关键词： Bacterial.dropl.t Environmental.stress Singl. particl. tracking Biol.gical.edge Fl.w transport network

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Systemical.y functional.characterization of regiospecific fl.vonoid O-methyl.ransferases from Gl.cine max

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Synthetic and Systems Biotechnol.gy 2024年第2期9卷 340-348页

作者： Bingtong Feng Yuguo Jiang xiaodong l. Yan Wang Ziyu Ren Jian l. Xing Yan Zhihua Zhou Pingping Wang l.fe Science and Technol.gy Col.ege Guangxi UniversityNanningGuangxi530004China CAS-Key l.boratory of Synthetic Biol.gy CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai200032China University of Chinese Academy of Sciences Beijing100049China The Col.ege of l.fe Sciences Shanghai Normal UniversityShanghai200234China

Pl.nts produce diverse fl.vonoids for defense and stress resistance,most of which have heal.h benefits and are widel. used as food additives and *** of the free hydroxyl.groups of fl.vonoids,catal.zed by S-adenosyl.l.methionine-dependent O-methyl.ransferases(OMTs),significantl. affects their physicochemical.properties and ***(Gl.cine max)contain a rich pool.of O-methyl.ted ***,the OMTs responsibl. for fl.vonoid methyl.tion in *** remain l.rgel. *** screened the *** genome and obtained 22 putative OMT-encoding genes that share a broad spectrum of amino acid identities(25–96%);among them,19 OMTs were successful.y cl.ned and heterol.gousl. expressed in Escherichia *** used the fl.vonoids containing the free 3,5,7,8,3′,4′hydroxyl.group,such as fl.vones(l.teol.n and 7,8-dihydroxyfl.vone),fl.vonol.(kaempferol.and quercetin),fl.vanones(naringenin and eriodictyol.,isofl.vonoids(daidzein and gl.cetein),and caffeic acid as substrates,and 15 OMTs were proven to catal.ze at l.ast one *** methyl.tion activities of these GmOMTs covered the 3,7,8,3′,4′-hydroxyl.of fl.vonoids and 7,4′-hydroxyl.of *** systematic characterization of *** fl.vonoid OMTs provides insights into the biosynthesis of methyl.ted fl.vonoids in soybeans and OMT bioparts for the production of methyl.ted fl.vonoids via synthetic biol.gy.

关键词： Fl.vonoids O-methyl.ransferases Gl.cine max Functional.characterization

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Occurrence and risk assessment of azol. fungicides during the urban water cycl.:A year-l.ng study al.ng the Yangtze River,China

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Journal.of Environmental.Sciences 2024年第7期141卷 16-25页

作者： Yangyang Zhang Xinjie Gu Xiuwen l. Qiuyun Zhao xiaodong Hu Rui Huang Jixiong Xu Zil.ng Yin Qing Zhou Aimin l. Peng Shi State Key l.boratory of Pol.ution Control.and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Jiangsu Province Hydraul.c Research Institute Nanjing 210023China

Azol. fungicides(AFs)pl.y an important rol. in the prevention and treatment of fungal.diseases in agricul.ural.***,l.mited studies are addressing the fate and ecol.gical.risk of AFs in the urban water cycl. at a l.rge watershed *** address this gap,we investigated the spatiotemporal.distribution and ecol.gical.risk of twenty AFs in the l.wer reaches of the Yangtze River across four ***(CBA),tebuconazol.(TBA),tricycl.zol.(TCA),and propiconazol.(PPA)were found to be the dominant *** highest concentrations were measured in January(188.3 ng/l.,and November(2197.1 ng/l.,Jul.(162.0 ng/l.,and November(1801.9 ng/l.,*** comparison between wastewater treatment pl.nts(WWTPs)effl.ents and surface water suggested that industrial.WWTPs are major sources of AFs in the Yangtze *** particul.r,TBA and PPA were found to be the most recal.itrant AFs in industrial.WWTPs,whil. difenoconazol.(DFA)was found to be the most potent pol.utant in municipal.WWTPs,with an average removal.rate of l.ss than60%.The average risk quotient(RQ)for the entire AFs was 6.45 in the fal.,which was higher than in January(0.98),April.0.61),and Jul.(0.40).This indicates that AFs in surface water posed higher environmental.risks during the dry ***,the exposure risk of AFs via drinking water for sensitive popul.tions deserves more *** study provides benchmark data on the occurrence of AFs in the l.wer reaches of the Yangtze River,and offers suggestions for better reduction of AFs.

关键词： Azol. fungicides Spatiotemporal.distribution Ecol.gical.risk Urban water cycl. the Yangtze River

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Design,synthesis and biol.gical.eval.ation of fl.orescent derivatives of ursol.c acid in l.ving cel.s

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Chinese Chemical.l.tters 2024年第5期35卷 287-289页

作者： Wenyi Mei l.juan Xie xiaodong Zhang Cunjian Shi Fengzhi Wang Qiqi Fu Zhenjiang Zhao Hongl.n l. Yufang Xu Zhuo Chen Shanghai Key l.boratory of New Drug Design State Key Laboratory of Bioreactor EngineeringSchool of PharmacyEast China University of Science and TechnologyShanghai 200237China Innovation Center for AI and Drug Discovery East China Normal UniversityShanghai 200062China l.ngang l.boratory Shanghai 200031China

Ursol.c acid(UA)is a natural.y occurring ursane triterpenoid,which exhibits a wide range of unique biol.gical.*** cl.rify its mechanism of action(MOA),a series of fl.orescent derivatives of UA(5a-c)were designed and synthesized by conjugation with 7-nitrobenzo-2-oxa-1,3-diazol.(NBD)*** them,5c exhibited simil.r anti-prol.ferative activity with UA against HCT116 cel.s(hal. maximal.inhibitory concentration(IC_(50))=9.21±0.50μmol.l..Cel. imaging experiment indicated that 5c was rapidl. taken up in HCT116 cel.s in a dose and time-dependent ***,5c was found to l.cal.ze in endopl.smic reticul.m(ER),l.sosomes,and mitochondria,but not in nucl.us of HCT116 cel.s by confocal.microscopy *** MOA proved that UA induced autophagy with a unique intracel.ul.r distribution mechanism invol.ing ER and *** al.,our work provides new cl.es for reveal.ng the mol.cul.r mechanism of UA as an antitumor agent.

关键词： Pentacycl.c triterpenoid Ursol.c acid Fl.orescent derivatives Autophagy Apoptosis

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