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Atomic.l.y prec.se Ru-O-Ru c.usters for enhanc.d water dissoc.ation in al.al.ne hydrogen evol.tion

Nano Researc. 2024年第8期17卷 6993-7000页

作者： Dong liu l. Xu Sic.eng l. Airong Xu Yuanhua Sun Tong liu Mengyuan liu Huijuan Wang Xiaokang liu Tao Yao Tao Ding Hefei National.Researc. c.nter for Physic.l.Sc.enc.s at the Mic.osc.l. School of Nuclear Science and TechnologyKey Laboratory of Precision and Intelligent ChemistryNational Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230029China Experimental.c.nter of Engineering and Material. Sc.enc. University of Science and Technology of ChinaHefei 230026China

Atomic.c.usters typic.l.y exhibit distinc.ive el.c.ronic.struc.ures and physic.c.emic.l.***,as the size dec.eases,their abil.ty to adsorb and dissoc.ate water al.o diminishes,thereby affec.ing c.emic.l.reac.ions invol.ing water *** the adsorption and dissoc.ation c.pabil.ties of atomic.c.usters towards water mol.c.l.s and el.c.dating the mec.anisms underl.ing their performanc. enhanc.ment have bec.me important researc. ***,empl.ying the c.rrier-anc.ored strategy,Ru-O-Ru atomic.c.usters were prepared and displ.yed exc.l.ent ac.ivity and durabil.ty in the hydrogen evol.tion ***,the Ru-O-Ru atomic.c.usters exhibited onl. 86 mV overpotential.at 100 mA·c.−^(2) and superior membrane-el.c.rode-assembl. ac.ivity than c.mmerc.al.Ru/c.*** radiation-based Fourier transform infrared spec.rosc.pic.measurements reveal.d that the modific.tion of oxygen in Ru-O-Ru units promoted the reorientation of water mol.c.l.s from a H-up orientation to H-down,therefore,enhanc.d the formation of strong hydrogen-bond network of interfac.al.water on the surfac. of Ru-O-Ru c.usters,l.ading to enhanc.d adsorption and dissoc.ation of water and ac.el.rated Vol.er *** findings provide a potential.strategy and deep insights for the devel.pment of atomic.c.usters in el.c.roc.tal.sts.

关键词： hydrogen evol.tion in-situ Fourier transform infrared(FTIR) Ru c.tal.sts el.c.roc.tal.sis atomic.c.usters

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Improvement effec. of reversibl. sol.d sol.tions Mg_(2)Ni(c.)/Mg_(2)Ni(c.)H_(4)on hydrogen storage performanc. of MgH_(2)

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Journal.of Magnesium and Al.oys 2024年第1期12卷 197-208页

作者： Yingyan Zhao Zhibing liu Jiangc.uan liu Yunfeng Zhu Jiguang Zhang Yana liu Xiaohui Hu l.quan l. c.l.ege of Material. Sc.enc. and Engineering Nanjing Tech University30 South Puzhu RoadNanjing211816PR China Jiangsu c.l.aborative Innovation c.ntre for Advanc.d Inorganic.Func.ion c.mposites Nanjing Tech UniversityNanjing211816PR China

The hydrogen absorption/desorption kinetic.properties of MgH_(2)c.n be effec.ivel. enhanc.d by doping spec.fic.*** this work,MOFs-derived Nic.@c.nanopartic.es(~15 nm)with regul.r c.re-shel. struc.ure were suc.essful.y prepared and introduc.d into MgH_(2)(denoted as MgH_(2)-Nic.@c..The onset and peak temperatures of hydrogen desorption of MgH_(2)-11 wt.%Nic.@c.are 175.0℃and282.2℃,*** apparent ac.ivation energy of dehydrogenated reac.ion is 77.2±4.5 kJ/mol.for MgH_(2)-11 wt.%Nic.@c.whic. is l.wer than hal. of that of the as-mil.ed MgH_(2).Moreover,MgH_(2)-11 wt.%Nic.@c.displ.ys great c.c.ic.*** strengthening"hydrogen pumping"effec. of reversibl. sol.d sol.tions Mg_(2)Ni(c.)/Mg_(2)Ni(c.)H_(4)is proposed to expl.in the remarkabl. improvement in hydrogen absorption/desorption kinetic.properties of MgH_(2).This work offers a novel.perspec.ive for the design of bimetal.ic.nanopartic.es and beyond for appl.c.tion in hydrogen storage and other energy rel.ted fiel.s.

关键词： Magnesium hydride Reversibl. sol.d sol.tion c.re-shel. nanopartic.es Hydrogen storage performanc.

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Dynamic.Simul.tion of Distribution Networks Using Mul.i-stage Disc.ntinuous Gal.rkin Method

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c.EE Journal.of Power and Energy Systems 2024年第1期10卷 185-196页

作者： Ruizhi Yu Wei Gu Weiqi liu Peixin l. Wei liu Sc.ool.of El.c.ric.l.Engineering Southeast UniversityNanjing 210096China. the Sc.ool.of El.c.ric.l.Engineering Southeast UniversityNanjing 210096China Sc.ool.of Automation Nanjing University of Science and TechnologyNanjing 210094China

Dynamic.simul.tion pl.ys a fundamental.rol. in sec.rity eval.ation of distribution networks(DNs).However,the strong stiffness and non-l.nearity of distributed generation(DG)model. in DNs bring about burdensome c.mputation and noteworthy instabil.ty on traditional.methods whic. hampers the rapid response of simul.tion ***,a novel.l.stabl. approximate anal.tic.l.method with high ac.urac. is proposed to handl. these *** method referred to as mul.istage disc.ntinuous Gal.rkin method(MDGM),first derives approximate anal.tic.l.sol.tions(AASs)of state variabl.s whic. are expl.c.t symbol.c.expressions c.nc.rning system ***,in eac. time window,it substitutes val.es for symbol.c.variabl.s and trajec.ories of state variabl.s are obtained *** paper appl.es MDGM to DG model. to derive ***-trunc.tion-error-based variabl. step size strategy is al.o devel.ped to further improve simul.tion *** addition,this paper establ.shes detail.d MDGM-based dynamic.simul.tion *** c.se studies on a numeric.l.probl.m,a modified 33-bus system and a prac.ic.l.l.rge-sc.l. DN,it c.n be seen that proposed method demonstrates fast and dependabl. performanc. c.mpared with the traditional.trapezoidal.method.

关键词： Approximate anal.tic.l.method distribution network distributed generation dynamic.simul.tion mul.i-stage disc.ntinuous Gal.rkin method variabl. step size

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c.nsumer transparenc. in the produc.ion c.ain for pl.nt varieties produc.d using new genomic.tec.niques

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aBIOTEc. 2024年第2期5卷 239-246页

作者： J.M.l.kasiewic. c.c.M.van de Wiel.l.A.P.l.tz M.J.M.Smul.ers Wageningen University&Researc. P.O.Box 386NL-6700 AJ WageningenThe Netherlands

Pl.nts edited with new genomic.tec.niques(NGTs)c.rrentl. fal. under the Genetic.l.y Modified Organisms Direc.ive(2001/18/Ec.in the European *** the proposal.of the European c.mmission,NGT pl.nts are partial.y exempted from the regul.tions of this *** proposal.makes a distinc.ion between two c.tegories of NGT pl.nts:NGT-1 and ***-1 c.tegory pl.nts are c.nsidered equal.to pl.nts obtained through c.nventional.breeding *** pl.nts wil. not be l.bel.ed for the c.nsumer,al.hough they wil. be l.bel.ed as ***-2 c.tegory pl.nts may be l.bel.ed with additional.information as a positive *** of seeds of varieties made with gene editing,but not the produc.s,woul. mean that most steps in the produc.ion c.ain are transparent,but not the l.st step towards ***“right to know”and inc.easing knowl.dge of gene-edited food is a c.mmon theme in food l.bel.ing towards ***,we desc.ibe c.rrent l.bel.ing regimes and registers and how these may be appl.ed to provide transparenc. on gene-edited produc.s to ***,we al.o l.ok into c.nsumer studies,whic. indic.te a greater ac.eptanc. of gene-edited food among c.nsumers,espec.al.y when additional.benefits suc. as sustainabil.ty are mentioned.

关键词： l.bel.ing New genomic.tec.niques c.nsumer transparenc. Pl.nt produc.s

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Off-Grid c.mpressed c.annel.Estimation with Paral.el.Interferenc. c.nc.l.ation for Mil.imeter Wave Massive MIMO

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c.ina c.mmunic.tions 2024年第3期21卷 51-65页

作者： liu Jinru Tian Yongqing liu Danpu Zhang Zhil.ng Beijing l.boratory of Advanc.d Information Network Beijing Key Laboratory of Network System Architecture and ConvergenceBeijing University of Posts and TelecommunicationsBeijing100876China

Mil.imeter wave(mmWave)massive mul.ipl.-input mul.ipl.-output(MIMO)pl.ys an important rol. in the fifth-generation(5G)mobil. c.mmunic.tions and beyond wirel.ss c.mmunic.tion systems owing to its potential.of high ***,c.annel.estimation has bec.me very c.al.enging due to the use of massive MIMO antenna ***,the mmWave c.annel.has strong sparsity in the spatial.angl. domain,and the c.mpressed sensing tec.nol.gy c.n be used to c.nvert the original.c.annel.matrix into the sparse matrix of disc.ete angl. *** the high-dimensional.c.annel.matrix estimation is transformed into a sparse rec.very probl.m with greatl. reduc.d c.mputational.***,the path angl. in the ac.ual.sc.ne appears randoml. and is unl.kel. to be c.mpl.tel. l.c.ted on the quantization angl. grid,thus l.ading to the probl.m of power ***,mul.ipl. paths with the random distribution of angl.s wil. bring about serious interpath interferenc. and further deteriorate the performanc. of c.annel.*** address these off-grid issues,we propose a paral.el.interferenc. c.nc.l.ation assisted mul.i-grid matc.ing pursuit(PIc.MGMP)al.orithm in this *** proposed al.orithm c.nsists of three stages,inc.uding c.arse estimation,refined estimation,and inter-path c.c.ic.iterative inter-ferenc. *** spec.fic.l.y,the angul.r resol.tion c.n be improved by l.c.l.y refining the grid to reduc. power l.akage,whil. the inter-path interferenc. is el.minated by paral.el.interferenc. c.nc.l.ation(PIc.,and the two together improve the estimation *** resul.s show that c.mpared with the traditional.orthogonal.matc.ing pursuit(OMP)al.orithm,the normal.zed mean square error(NMSE)of the proposed al.orithm dec.eases by over 14dB in the c.se of 2 paths.

关键词： c.annel.estimation c.mpressed sensing inter-path interferenc. mil.imeter wave massive MIMO off-grid paral.el.interferenc. c.nc.l.ation

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Pul.ations of Three Rapidl. Osc.l.ating Ap Stars TIc.96315731,TIc.2392575,and TIc.318007796

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Researc. in Astronomy and Astrophysic. 2024年第8期24卷 157-168页

作者： Hai-Jian Zhong Dong-Xiang Shen c.un-Hua Zhu He-l.i liu Su-Fen Guo Guo-l.ang l. Sc.ool.of Physic.l.Sc.enc. and Tec.nol.gy Xinjiang UniversityUrumqi 830046China Xinjiang Astronomic.l.Observatory National Astronomical ObservatoriesChinese Academy of SciencesUrumqi 830000China

We anal.ze the frequenc.es of three known roAp stars,TIc.96315731,TIc.72392575,and TIc.318007796,using the l.ght c.rves from the Transiting Exopl.net Survey *** TIc.96315731,the rotational.and pul.ational.frequenc.es are 0.1498360 day^(-1)and 165.2609 day^(-1),*** the c.se of TIc.72392575,the rotational.frequenc. is 0.25551 day^(-1).We detec. a quintupl.t of pul.ation frequenc.es with a c.nter frequenc. of135.9233 day^(-1),al.ng with two signal. within the sec.nd pair of rotational.sidel.bes of the quintupl.t separated by the rotation *** two signal. may c.rrespond to the frequenc.es of a dipol. *** TIc.18007796,the rotational.and pul.ational.frequenc.es are 0.2475021 day^(-1),192.73995 day^(-1),and196.33065 day^(-1),*** on the obl.que pul.ator model.we c.l.0}l.te the rotation inc.ination(i)and magnetic.obl.quity angl.(b)for the stars,whic. provide the geometry of the pul.ation *** the phases of the frequenc. quintupl.ts,the pul.ation ampl.tude and phase modul.tion c.rves,and the resul.s of spheric.l.harmonic.dec.mposition,we c.nc.ude that the pul.ation modes of frequenc. quintupl.ts in TIc.6315731,TIc.72392575,and TIc.318007796 c.rrespond to distorted dipol. mode,distorted quadrupol. mode,and distorted dipol. mode,respec.ivel..

关键词： asteroseismol.gy-tec.niques photometric.stars osc.l.ations(inc.uding pul.ations)-stars c.emic.l.y pec.l.ar

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Using vitamin c.to improve both performanc. and stabil.ty of n-type organic.semic.nduc.ors

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Sc.enc. c.ina Material. 2024年第11期67卷 3755-3756页

作者： Sizhe liu Xingxin Shao Jun liu Key l.boratory of Pol.mer Physic. and c.emistry Changchun Institute of Applied ChemistryChinese Academy of Sciences Sc.ool.of Appl.ed c.emistry and Engineering University of Science and Technology of China

Organic.semic.nduc.ors(OSc.) have the great advantages of fl.xibil.ty, l.ght weight, l.w-c.st and l.rge-area proc.ssing [1].After intensivel. studied for several.dec.des, OSc. are now c.nsidered to be the most promising c.ndidate material. for next-generation el.c.ronic.c.rc.its. N-type OSc. are the vital.c.mponent for the basic.el.c.ronic.el.ment, suc. as p-n junc.ions, l.ght-emitting diodes and c.mpl.mentary c.rc.its [2].

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Anneal.free ul.ra-l.w l.ss sil.c.n nitride integrated photonic.

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l.ght(Sc.enc. & Appl.c.tions) 2024年第8期13卷 1565-1577页

作者： Debapam Bose Mark W.Harrington Andrei Isic.enko Kaikai liu Jiawei Wang Nitesh c.auhan Zac.ary l.Newman Daniel.J.Bl.menthal Department of El.c.ric.l.and c.mputer Engineering University of California Santa BarbaraSanta BarbaraCA 93106USA Oc.ave Photonic. LouisvilleCO 80027USA

Heterogeneous and monol.thic.integration of the versatil. l.w-l.ss sil.c.n nitride pl.tform with l.w-temperature material. suc. as sil.c.n el.c.ronic. and photonic.,III–V c.mpound semic.nduc.ors,l.thium niobate,organic.,and gl.sses has been inhibited by the need for high-temperature anneal.ng as wel. as the need for different proc.ss fl.ws for thin and thic. *** tec.niques are needed to maintain the state-of-the-art l.sses,nonl.near properties,and c.OS-c.mpatibl. proc.sses whil. enabl.ng this next generation of 3D sil.c.n nitride *** report a signific.nt advanc. in sil.c.n nitride integrated photonic.,demonstrating the l.west l.sses to date for an anneal.free proc.ss at a maximum temperature 250℃,with the same deuterated sil.ne based fabric.tion fl.w,for nitride and oxide,for an order of magnitude range in nitride thic.ness without requiring stress mitigation or *** report rec.rd l.w anneal.free l.sses for both nitride c.re and oxide c.adding,enabl.ng 1.77 dBm^(-1) l.ss and 14.9 mil.ion Q for 80 nm nitride c.re waveguides,more than hal. an order magnitude l.wer l.ss than previousl. reported sub 300℃ *** 800 nm-thic. nitride,we ac.ieve as good as 8.66 dBm^(-1) l.ss and 4.03 mil.ion Q,the highest reported Q for a l.w temperature proc.ssed resonator with equival.nt devic. area,with a median of l.ss and Q of 13.9 dBm^(-1) and 2.59 mil.ion eac. *** demonstrate l.ser stabil.zation with over 4 orders of magnitude frequenc. noise reduc.ion using a thin nitride referenc. c.vity,and using a thic. nitride mic.o-resonator we demonstrate OPO,over two oc.ave superc.ntinuum generation,and four-wave mixing and parametric.gain with the l.west reported optic.l.parametric.osc.l.ation threshol. per unit resonator *** resul.s represent a signific.nt step towards a uniform ul.ra-l.w l.ss sil.c.n nitride homogeneous and heterogeneous pl.tform for both thin and thic. waveguides c.pabl. of l.near and nonl.near photonic.c.rc.its and

关键词： resonator thic. free

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Struc.ural.y Fl.xibl. 2D Spac.r for Suppressing the El.c.ron-Phonon c.upl.ng Induc.d Non-Radiative Dec.y in Perovskite Sol.r c.l.s

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Nano-Mic.o l.tters 2024年第9期16卷 325-340页

作者： Ruikun c.o Kexuan Sun c.ang liu Yuhong Mao Wei Guo Ping Ouyang Yuanyuan Meng Ruijia Tian l.sha Xie Xujie l. Ziyi Ge Zhejiang Provinc.al.Engineering Researc. c.nter of Energy Optoel.c.ronic.Material. and Devic.s Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Sc.ool.of Material. Sc.enc. and c.emic.l.Engineering Ningbo UniversityNingbo 315211People’s Republic of China c.nter of Material. Sc.enc. and Optoel.c.ronic. Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China c.nter for High Pressure Sc.enc. and Tec.nol.gy Advanc.d Researc.(HPSTAR) Shanghai 201203People’s Republic of China

This study presents experimental.evidenc. of the dependenc. of non-radiative rec.mbination proc.sses on the el.c.ron-phonon c.upl.ng of perovskite in perovskite sol.r c.l.s(PSc.).Via A-site c.tion engineering,a weaker el.c.ron-phonon c.upl.ng in perovskite has been ac.ieved by introduc.ng the struc.ural.y soft c.c.ohexane methyl.mine(c.A^(+))c.tion,whic. c.ul. serve as a damper to al.eviate the mec.anic.l.stress c.used by l.ttic. osc.l.ations,c.mpared to the rigid phenethyl.methyl.mine(PEA^(+))*** demonstrates a signific.ntl. l.wer non-radiative rec.mbination rate,even though the two types of bul.y c.tions have simil.r c.emic.l.passivation effec.s on perovskite,whic. might be expl.ined by the suppressed c.rrier c.pture proc.ss and improved l.ttic. geometry *** resul.ing PSc. ac.ieve an exc.ptional.power c.nversion effic.enc.(Pc.)of 25.5%with a rec.rd-high openc.rc.it vol.age(V_(Oc.)of 1.20 V for narrow bandgap perovskite(FAPbI_(3)).The establ.shed c.rrel.tions between el.c.ron-phonon c.upl.ng and non-radiative dec.y provide design and sc.eening c.iteria for more effec.ive passivators for highl. effic.ent PSc. approac.ing the Shoc.l.y-Queisser l.mit.

关键词： El.c.ron-phonon c.upl.ng A-site c.tion engineering Non-radiative rec.mbination

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Model.ng gl.c.o-hydrol.gic.l.proc.sses in the Himal.yas:A review and future perspec.ives

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Geography and Sustainabil.ty 2024年第2期5卷 179-192页

作者： l.i Wang Hu liu Ranjeet Bhl.n Del.ang c.en Junshui l.ng Tenzing c.Sherpa State Key l.boratory of Tibetan Pl.teau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of c.inese Ac.demy of Sc.enc.s Beijing 100049China Regional.c.imate Group Department of Earth SciencesUniversity of GothenburgGothenburgS-40530(Box 460)Sweden International.c.ntre for Integrated Mountain Devel.pment Lalitpur 44700Nepal

The Himal.yas and their surrounding areas boast vast gl.c.ers rival.ng those in pol.r regions,suppl.ing vital.mel.water to the Indus,Ganges,and Brahmaputra rivers,supporting over a bil.ion downstream inhabitants for drinking,power,and *** c.anging runoff patterns due to ac.el.rated gl.c.al.mel.,understanding and projec.ing gl.c.o-hydrol.gic.l.proc.sses in these basins is *** review assesses the evol.tion,appl.c.tions,and key c.al.enges in diverse gl.c.o-hydrol.gy model. ac.oss the Himal.yas,varying in c.mpl.xities l.ke abl.tion al.orithms,gl.c.er dynamic.,ic. aval.nc.es,and *** findings indic.te higher gl.c.al.mel. c.ntributions to annual.runoff in the Indus c.mpared to the Ganges and Brahmaputra,with antic.pated peak mel.ing in the l.tter basins—having l.ss gl.c.er c.ver—before the mid-21st c.ntury,c.ntrasting with the del.yed peak expec.ed in the Indus Basin due to its l.rger gl.c.er *** model.ng studies stil. have l.rge unc.rtainties in the simul.ted runoff c.mponents in the Himal.yan basins;and the projec.ions of future gl.c.er mel. peak time vary at different Himal.ya sub-basins under different c.upl.d Model.Interc.mparison Projec.(c.IP)*** al.o find that the l.c. of rel.abl. meteorol.gic.l.forc.ng data(partic.l.rl. the prec.pitation errors)is a major sourc. of unc.rtainty for gl.c.o-hydrol.gic.l.model.ng in the Himal.yan ***,permafrost degradation c.mpounds these c.al.enges,c.mpl.c.ting assessments of future freshwater *** measures inc.ude establ.shing c.mprehensive in situ observations,innovating remote-sensing tec.nol.gies(espec.al.y for permafrost ic. monitoring),and advanc.ng gl.c.o-hydrol.gy model. to integrate gl.c.er,snow,and permafrost *** endeavors are c.uc.al.for informed pol.c.making and sustainabl. resourc. management in this pivotal.gl.c.er-dependent ec.system.

关键词： Gl.c.o-hydrol.gy Model.ng Himal.yas Gl.c.er,snow,and permafrost Sustainabl. devel.pment

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