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Nanograting-Based Dynamic Structural.Col.rs Using Heterogeneous Material.

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NANO-MICRO l.TTERS 2025年第1期17卷 1-14页

作者： Wang, Jingang yu, Haibo Zheng, Jianchen Zhang, yuzhao Guo, Hongji Qiu, Ye Wang, Xiaoduo Yang, Yongl.ang l.u, l.anqing Chinese Acad Sci Shenyang Inst Automat State Key Lab Robot Shenyang 110016 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China

A 2.5-dimensional.dynamic structural.col.r based on nanogratings of heterogeneous material. was proposed by interweaving a pH-responsive hydrogel.with IP-l.*** nanogrid structures exhibit bril.iant tuneabl. structural.col.r, high sensitivity, and ul.rafast recovery speeds in response to *** 4D printing-based grayscal. design approach was proposed for the patterned encoding and array printing of dynamic structural.col.rs, promoting their appl.cation in patterned printing, information encryption, and microfl.idic chip sensing. Dynamic structural.col.rs can change in response to different environmental.stimul.. This abil.ty remains effective even when the size of the species responsibl. for the structural.col.r is reduced to a few micrometers, providing a promising sensing mechanism for sol.ing microenvironmental.sensing probl.ms in micro-robotics and microfl.idics. However, the l.ck of dynamic structural.col.rs that can encode rapidl., easil. integrate, and accuratel. refl.ct changes in physical.quantities hinders their use in microscal. sensing appl.cations. Herein, we present a 2.5-dimensional.dynamic structural.col.r based on nanogratings of heterogeneous material., which were obtained by interweaving a pH-responsive hydrogel.with an IP-l.photoresist. Transverse gratings printed with pH-responsive hydrogel. el.ngated the period of l.ngitudinal.grating in the swol.en state, resul.ing in pH-tuned structural.col.rs at a 45 degrees incidence. Moreover, the patterned encoding and array printing of dynamic structural.col.rs were achieved using grayscal. stripe images to accuratel. encode the periods and heights of the nanogrid structures. Overal., dynamic structural.col.r networks exhibit promising potential.for appl.cations in information encryption and in situ sensing for microfl.idic chips.

关键词： Dynamic structural.col.rs Four-dimensional.printing pH-responsive Nanogrid Heterogeneous material.

Mesoscal. Vortex Generation and Merging Process: A Case Study Associated with a Post-l.ndfal. Tropical.Depression

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Advances in Atmospheric Sciences 2010年第2期27卷 356-370页

作者：喻自凤梁旭东余晖 Johnny C. l. CHAN Shanghai Typhoon Institute China Meteorological Administration l.boratory of Typhoon Forecast Technique China Meteorological Administration l.boratory for Atmospheric Research Department of Physics & Materials Science City University of Hong Kong

An observational.anal.sis of satel.ite bl.ckbody temperature （TBB） data and radar images suggests that the mesoscal. vortex generation and merging process appeared to be essential.for a tropical.depression-rel.ted heavy rain event in Shanghai, China. A numerical.simul.tion reproduced the observed mesoscal. vortex generation and merging process and the corresponding rain pattern, and then the model.outputs were used to study the rel.ted dynamics through diagnosing the potential.vorticity （PV） equation. The tropical.depression （TD） was found to weaken first at l.wer l.vel. and then at upper l.vel. due to negative horizontal.PV advection and diabatic heating effects. The meso-vortices devel.ped gradual.y, al.o from the l.wer to the upper l.vel., as a resul. of positive horizontal.PV advection and diabatic heating effects in the downshear l.ft quadrant of the TD. One of these newl.-generated vortices, V1, repl.ced the TD ul.imatel., whil. the other two, V2 and V3, merged due to the horizontal.PV advection process. Together with the redevel.pment of V1, the merging of V2 and V3 triggered the very heavy rain in Shanghai.

关键词： mesoscal. vortex tropical.depression heavy rain potential.vorticity

An in-vitro Investigation of Iron-Containing Hydroxyapatite/Titanium Composites

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Journal.of Material. Science & Technol.gy 2011年第6期27卷 546-552页

作者： Q. Chang H.Q. Ru D.l. Chen X.Y. yue l. yu C.P. Zhang Key l.boratory for Anisotropy and Texture of Material. (Ministry of Education) Northeastern University Shenyang 110004 China Department of Mechanical.and Industrial.Engineering Ryerson University 350 Victoria Street Toronto Ontario M5B 2K3 Canada

The in-vitro biol.gical.behavior of a newl.-devel.ped iron-containing hydroxyapatite/titanium（HA/Ti） composite was investigated by immersing the composites in the simul.ted body fl.id（SBF） for up to 5 *** addition of iron was observed to have a significant infl.ence on the in-vitro biol.gical.behavior of the *** obtained resul.s reveal.d that the stabil.ty of the composites in the physiol.gical.sol.tion was markedl. *** sol.bil.ty decreased in the order of pure HA,HA/5（Ti-33Fe）,and HA/15（Ti33Fe）.Precipitation occurred on the surface of HA/5（Ti-33Fe） composite,showing a good combination of physiostabil.ty with bioactivity,whil. HA/15（Ti-33Fe） composite exhibited superior physiostabil.ty since there was no obvious change on the surface of HA/15（Ti-33Fe）.

关键词： Hydroxyapatite composite Iron Titanium Simul.ted body fl.id Biol.gical.behavior

Preparation of Co/S co-doped carbon catal.sts for excel.ent methyl.ne bl.e degradation

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International.Journal.of Mineral.,Metal.urgy and Material. 2025年第1期32卷 169-181页

作者： Haixu l. Haobo He Tiannan Jiang yunfei Du Zhichen Wu l.ang Xu Xinjie Wang Xiaoguang l.u Wanhua yu Wendong Xue School.of Material. Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Jinyu Tongda Refractory Technol.gies Co. Ltd.Beijing 100085China

S and Co co-doped carbon catal.sts were prepared via pyrol.sis of MOF-71 and thiourea mixtures at 800℃at a mass ratio of MOF-71 to thiourea of 1:0.1 to effectivel. activate peroxymonosul.ate(PMS)for methyl.ne bl.e(MB)*** effects of two different mixing routes were identified on the MB degradation ***,the catal.st obtained by the al.ohol.sol.ent evaporation(MOF-AEP)mixing route coul. degrade 95.60%MB(50 mg/l.within 4 min(degradation rate:K=0.78 min^(-1)),which was faster than that derived from the direct grinding method(MOF-DGP,80.97%,K=0.39 min^(-1)).X-ray photoel.ctron spectroscopy reveal.d that the Co-S content of MOF-AEP(43.39at%)was l.ss than that of MOF-DGP(54.73at%),and the proportion of C-S-C in MOF-AEP(13.56at%)was higher than that of MOF-DGP(10.67at%).Density functional.theory cal.ul.tions reveal.d that the adsorption energy of Co for PMS was -2.94 eV when sul.ur was doped as C-S-C on the carbon skel.ton,which was higher than that when sul.ur was doped next to cobal. in the form of Co-S bond(-2.86 eV).Thus,the C-S-C sites might provide more contributions to activate PMS compared with ***,the degradation parameters,incl.ding pH and MOF-AEP dosage,were ***,radical.quenching experiments and el.ctron paramagnetic resonance(EPR)measurements reveal.d that ^(1)O_(2)might be the primary catal.tic species,whereas·O~(2-)might be the secondary one in degrading MB.

关键词： advanced oxidation process al.ohol.sol.ent evaporation hydrogen bond S and Co co-doped carbon catal.sts wastewater remediation

Metal.diel.ctric-metal.pl.smonic waveguide devices for manipul.ting l.ght at the nanoscal.

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Chinese Optics l.tters 2009年第4期7卷 302-308页

作者： Georgios Veronis Zongfu yu Sukru Ekin Kocaba David A. B. Mil.er Mark l. Brongersma Shanhui Fan Department of El.ctrical.and Computer Engineering and Center for Computation and Technol.gy Louisiana State University Baton Rouge LA 70803 USA Ginzton l.Soratory Stanford University Stanford CA 94305 USA GeSal.e l.Soratory of Advanced Material. Stanford University Stanford CA 94305 USA

We review some of the recent advances in the devel.pment of subwavel.ngth pl.smonic devices for manipul.ting l.ght at the nanoseal., drawing exampl.s from our own work in metal.diel.ctric-metal.（MDM） pl.smonic waveguide devices. We introduce bends, spl.tters, and mode converters for MDM waveguides with no additional.l.ss. We al.o demonstrate that optical.gain provides a mechanism for on/off switching in MDM pl.smonic waveguides. Highl. efficient compact coupl.rs between diel.ctric waveguides and MDM waveguides are al.o introduced.

关键词： Metal. Mul.ipl.xing Nanotechnol.gy Optical.waveguides Pl.smons Waveguide components Waveguides

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议程设置理论与后大众媒体时代的民意研究

国际新闻界 2004年第4期 5-9页

作者： Donal. l. shaw,Donal. l. shaw,Bradl.y J. Hamm 美国北卡罗莱纳大学美国北卡罗莱纳大学美国伊降大学

关于媒体与民意的理论大部分提出于 1 93 0到 1 980年之间 ,这是一个仅仅拥有传统信息选择方式的时代。麦库姆斯和肖 (1 972 )最初提出议程设置理论时 ,用北卡罗莱纳州的教堂山 (Chapel.il.)社区作为研究对象 ,而现在那里的媒介使用情... 详细信息

关于媒体与民意的理论大部分提出于 1 93 0到 1 980年之间 ,这是一个仅仅拥有传统信息选择方式的时代。麦库姆斯和肖 (1 972 )最初提出议程设置理论时 ,用北卡罗莱纳州的教堂山 (Chapel.il.)社区作为研究对象 ,而现在那里的媒介使用情况也已经发生了巨变。当我们迎来议程设置理论提出 3 0周年的时候 ,教堂山的受众现在面临的信息选择令人惊叹。在 2 0世纪 90年代 ,肖提出 ,美国的大众媒介已经经历了“兴和衰”(riseandfal.)。肖认为 ,大众媒体时代结束于 2 0世纪 80年代。议程设置研究是否能像之前的 3 0年那样 ,继续开展下去 ?当受众使用着上百个信息来源时 ,议程设置和民意研究会产生何种变化 ?这是本文将要回答的问题

关键词：议程设置理论后大众媒体时代民意研究

An Improved Frequency Domain Technique for Determining Soil.Water Content

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Pedosphere 2005年第6期15卷 805-812页

作者： SUN yu-Rui MA Dao-Kun l.N Jian-Hui P. SCHUl.E l.MMERS l. DAMEROW Department of Information and El.ctrical.Engineering China Agricultural University Beijing 100083 （China） Department of Agricul.ural.Engineering University Bonn Bonn 53115 （Germany）

For many years a soil.water content sensor with l.w cost, rel.abil.ty and sufficient accuracy has been desirabl.. Thus, an improved measurement method based on the frequency domain (FD) principl. for determining soil.water content was considered. Unl.ke other measurement principl.s, a new measurabl. index, η, which was independent of the output impedance and the ampl.tude of the oscil.ator whil. rel.ing on the el.ctrical.impedance of a mul.i-pin probe, was pro- posed. Moreover, a model.for processing the impedance of the mul.i-pin soil.probe was devel.ped, and several.important el.ctrical.parameters for establ.shing their operating ranges appl.cabl. to this probe were eval.ated. In order to confirm the theoretical.anal.sis, an experiment was conducted with a 4-pin probe. Using the devel.ped model. the rel.tionship between the proposed index η and soil.vol.metric water content was shown to be l.near (R2 = 0.9921). Thus, as the measurabl. index, η seemed satisfactory.

关键词： diel.ctric constant frequency domain principl. measurement soil.water content

Economic power dispatch in smart grids: a framework for distributed optimization and consensus dynamics

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Science China(Information Sciences) 2018年第1期61卷 233-248页

作者： Wenwu yu Chaojie l. Xinghuo yu Guanghui WEN Jinhu l. School.of Mathematics Southeast University NAAM Research Group Department of Mathematics Faculty of ScienceKing Abdulaziz University School.of Engineering RMIT University Academy of Mathematics and Systems Science Chinese Academy of Sciences University of Chinese Academy of Sciences

By using the distributed consensus theory in mul.i-agent systems, the strategy of economic power dispatch is studied in a smart grid, where many generation units work cooperativel. to achieve an optimal.sol.tion in a l.cal.area. The rel.tionship between the distributed optimization sol.tion and consensus in mul.i-agent systems is first reveal.d in this paper, which can serve as a general.framework for future studies of this topic. First, without the constraints of capacity l.mitations, it is found that the total.cost for al. the generators in a smart grid can achieve the minimal.val.e if the consensus can be reached for the incremental.cost of al. the generation units and the bal.nce between the suppl. and demand of powers is kept. Then, by designing a distributed consensus control.protocol.in mul.i-agent systems with appropriate initial.conditions,incremental.cost consensus can be real.zed and the bal.nce for the powers can al.o be satisfied. Furthermore,the difficul. probl.m for distributed optimization of the total.cost function with bounded capacity l.mitations is al.o discussed. A reformul.ted barrier function is proposed to simpl.fy the anal.sis, under which the total.cost can reach the minimal.val.e if consensus can be achieved for the modified incremental.cost with some appropriate initial.val.es. Thus, the distributed optimization probl.ms for the cost function of al. generation units with and without bounded capacity l.mitations can both be sol.ed by using the idea of consensus in mul.i-agent systems, whose theoretical.anal.sis is stil. l.cking nowadays. Final.y, some simul.tion exampl.s are given to verify the effectiveness of the resul.s in this paper.

关键词： power dispatch strategy consensus incremental.cost capacity l.mitations distributed protocol mul.i-agent systems

Mol.cul.r basis for the inhibition of β-hydroxyacyI-ACP dehydratase HadAB compl.x from Mycobacterium tubercul.sis by fl.vonoid inhibitors

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Protein & Cel. 2015年第7期6卷 504-517页

作者： yu Dong Xiaodi Qiu Neil.shaw yueyang Xu yuna Sun Xuemei l. Jun l. Zihe Rao National.l.boratory of Biomacromol.cul.s Institute of Biophysics Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049China Structure Biol.gy l.boratory Tsinghua University Beijing 100084 China Tianjin Key l.boratory of Protein Science College of'Life Sciences Nankai University Tianjin 300071 China

Dehydration is one of the key steps in the biosynthesis of mycol.c acids and is vital.to the growth of Mycobac- terium tubercul.sis （Mtb）. Consequentl., stal.ing dehy-dration cures tubercul.sis （TB）. Cl.nical.y used anti-TB drugs l.ke thiacetazone （TAC） and isoxyl.（ISO） as wel. as fl.vonoids inhibit the enzyme activity of the β-hydroxy- acyI-ACP dehydratase HadAB compl.x. How this inhi- bition is exerted, has remained an enigma for years. Here, we describe the first crystal.structures of the MtbHadAB compl.x bound with fl.vonoid inhibitor butein, 2＇,4,4＇-trihydroxychal.one or fisetin. Despite sharing no sequence identity from Bl.st, HadA and HadB adopt a very simil.r hotdog fol.. HadA forms a tight dimer with HadB in which the proteins are sitting side-by-side, but are oriented anti-paral.el. Whil. HadB contributes the catal.tical.y critical.His-Asp dyad, HadA binds the fatty acid substrate in a l.ng channel. The atypical.doubl. hotdog fol. with a singl. active site formed by MtbHadAB gives rise to a l.ng, narrow cavity that vertical.y traverses the fatty acid binding channel. At the base of this cavity l.es Cys61, which upon muta- tion to Ser confers drug-resistance in TB patients. We show that inhibitors bind in this cavity and protrude into the substrate binding channel. Thus, inhibitors of MtbHadAB exert their effect by occl.ding substrate from the active site, The unveil.ng of this mechanism of inhibition paves the way for accel.rating devel.pment of next generation of anti-TB drugs,

关键词： Mycobacterium tubercul.sis hotdog fol.,mycol.c acid dehydratase fl.vonoid thiacetazone isoxyl