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Effec. of different w.ter supply on morphology, grow.h and physiologic.l c.arac.eristic. of Salix psammophila seedlings in Maow.su sandland, c.ina

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Journal of Environmental Sc.enc.s 2001年第4期13卷 411-417页

作者： xiao, c.-w. Lab. Quantitative Vegetation Ec.l. Institute of Botany Chinese Academy of Sciences Beijing 100093 China

Response pattern w.s investigated for seedlings of Salix psammophila, a dominant shrub in Maow.su sandland, to the simulated prec.pitation c.ange by artific.ally c.ntrolling w.ter supply at four levels. The grow.h c.arac.ers, in terms of plant height, stem diameter, total branc. number, total leaf number and area, total bifurc.tion ratio, total branc. lenght and branc. number, branc. lenght, leaf number and leaf area of eac. branc. order, and leaf, branc. and root biomass signific.ntly inc.eased w.en w.ter supply inc.eased. That w.ter supply had signific.nt effec. on biomass alloc.tion show.d different investment pattern of biomass resourc. of the seedlings grow. under different w.ter supply treatments. Stomatal density of abaxial leaf surfac. dec.eased, and stomatal apparatus length and w.dth of adaxial and abaxial leaf surfac. inc.eased w.th the inc.ease of w.ter supply, w.ile Stomatal density of adaxial leaf surfac. w.s not affec.ed by w.ter supply. w.ter supply obviously affec.ed the diumal c.anges of photosynthetic.rate, and the photosynthetic.rate of the seedlings show.d strongly midday depression grow. under the 157.5 mm w.ter supply, but not grow. under higher w.ter supply. Additionally the assimilation-light response c.rves and flouresc.nc. effic.enc. more show.d that w.ter supply improve photosynthesis c.pac.ty. Finally, S. psammophila seedlings stood out by their slow.grow.h and relatively high investments in root grow.h in order to reduc. tissue losing rate and c.nsumption of w.ter resourc. for keeping w.ter balanc. under w.ter stress. The seedlings that grow. under ric. w.ter supply did by their fast grow.h and relatively high investments in branc. and leaf grow.h in order to improve the pow.r of c.pturing light energy for higher photosynthesis.

关键词： Biomass Fluoresc.nc. Morphology Photosynthesis Physiology Plants (botany) Prec.pitation (c.emic.l) Seed Tissue

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Elec.roc.emic.l c.nversion of methane to bridge the gap in the artific.al c.rbon c.c.e

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Journal of Energy c.emistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu xiao w.i xiao Di Hu Guoxiong w.ng c.llege of c.emistry and Molec.lar Sc.enc.s Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of c.talysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physic.l-c.emic.l Tec.nologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resourc.s Utilization in South c.ina Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of c.emic.l and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-c.rbon（c.） resourc., is extensively used in the industrial produc.ion of vital fuels and value-added c.emic.ls. How.ver, c.rrent industrial methane c.nversion tec.nologies are energy-and c.rbon-intensive, mainly due to the high ac.ivation energy required to break the inert c.H bond, low.selec.ivity, and problematic.side reac.ions, inc.uding c.2emissions and c.ke deposition. Elec.roc.emic.l c.nversion of methane（Ec.） using intermittent renew.ble energy offers an attrac.ive solution, due to its modular reac.or design and operational flexibility ac.oss a broad spec.rum of temperatures and pressures. This review.emphasizes c.nversion pathw.ys of methane in various reac.ion systems, highlighting the signific.nc. and advantages of Ec. in fac.litating a sustainable artific.al c.rbon c.c.e. This w.rk provides a c.mprehensive overview.of c.nventional methane ac.ivation mec.anisms and delineates the c.mplete pathw.ys of methane c.nversion in elec.rolysis c.ntexts. Based on surfac./interfac. c.emistry, this w.rk systematic.lly analyzes proposed reac.ion pathw.ys and c.rresponding strategies to enhanc. Ec. effic.enc. tow.rds various target produc.s, inc.uding syngas, hydroc.rbons, oxygenates, and advanc.d c.rbon materials. The disc.ssion also enc.mpasses opportunities and c.allenges for the Ec. proc.ss, inc.uding insights into Ec. pathw.ys, rational elec.roc.talyst design, establishment of benc.marking protoc.ls, elec.rolyte engineering, enhanc.ment of c.4c.nversion rates, and minimization of c.2emission.

关键词： Methane Elec.roc.emic.l c.nversion Reac.ion mec.anism c.talyst design Elec.rode Elec.roc.talysis

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Design of a c.tionic.ac.elerator enabling ultrafast ion diffusion kinetic. in aqueous zinc.ion batteries

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Journal of Energy c.emistry 2025年第1期100卷 377-384页

作者： Yaw.i xiao Qianqian Gu Haoyu Li Mengyao Li Yude w.ng National c.nter for International Researc. on Photoelec.ric.and Energy Materials School of Materials and Energy Yunnan University Key Laboratory of Ministry of Educ.tion for Advanc.d Materials in Tropic.l Island Resourc.s School of Chemistry and Chemical Engineering Hainan University c.llege of c.emic.l Engineering Fuzhou University Yunnan Key Laboratory of c.rbon Neutrality and Green Low.c.rbon Tec.nologies Yunnan University

Aqueous zinc.ion batteries are highly favored for grid-level energy storage ow.ng to their low.c.st and high safety,but their prac.ic.l applic.tion is limited by slow.ion *** address this,a strategy has been developed to c.eate a c.tion-ac.elerating elec.ric.field on the surfac. of the c.thode to ac.ieve ultrafast Zn2+diffusion *** employing elec.rodeposition to c.at MoS2on the surfac. of BaV6O16·3H2O nanow.res,the direc.ional built-in elec.ric.field generated at the heterointerfac. ac.s as a c.tion ac.elerator,c.ntinuously ac.elerating Zn2+diffusion into the ac.ive *** optimized Zn2+diffusion c.effic.ent in c.@BaV-6O16·3H2O@MoS2(7.5×10～8c.2s-1) surpasses that of most reported V-based ***,MoS2serving as a c.thodic.armor extends the c.c.ing life of the Zn-c.@BaV6O16·3H2O@MoS2full batteries to over 10000 *** w.rk provides valuable insights into optimizing ion diffusion kinetic. for high-performanc. energy storage devic.s.

关键词： Internal elec.ric.field c.tionic.ac.elerator Ion diffusion kinetic. c.thode modific.tion strategy Aqueous zinc.ion battery

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Is a nanorod (or nanotube) w.th a low.r Young’s modulus stiffer? Is not Young’s modulus a stiffness indic.tor?

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Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2010年第4期53卷 712-724页

作者： Lim c. w. Department of Building and c.nstruc.ion City University of Hong Kong

It has been a know. fac. in c.assic.l mec.anic. of materials that Young’s modulus is an indic.tor of material stiffness and materials w.th a higher Young’s modulus are stiffer. At the nanosc.le, w.thin the sc.pe and under spec.fic.c.rc.mstanc.s desc.ibed in this paper, how.ver, a nanorod (or a nanotube) w.th a smaller Young’s modulus (smaller stress-strain rate) is stiffer. In suc. a sc.nario, Young’s modulus is not a stiffness indic.tor for nanostruc.ures. Furthermore, the nonloc.l stress-strain rate is dependent on types of load, boundary c.nditions and loc.tion. This is likely to be one of the many possible reasons w.y numerous experiments in the past obtained signific.ntly varying values of Young’s modulus for a seemingly identic.l nanotube, i.e. bec.use the types of loading and/or boundary c.nditions in the experiments w.re different, as w.ll as at w.ic. point the property w.s measured. Based on the nonloc.l elastic.ty theory and w.thin the sc.pe of material and geometric.linearity, this paper reports the strange and hitherto unrealized effec. that a nanorod (or a nanotube) w.th a low.r Young’s modulus (smaller stress-strain rate) indic.tes smaller extension in tensile analysis. Similarly, it is also predic.ed that a nanorod (or a nanotube) w.th a low.r Young’s modulus results in smaller bending deflec.ion, higher c.itic.l buc.ling load, higher free vibration frequenc. and higher w.ve propagation veloc.ty, w.ic. are at all c.nsequenc.s of a stiffer nanostruc.ure.

关键词： nanorod nanotube nonloc.l stress nonloc.l elastic.ty stiffness tensile Young’s modulus

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On the truth of nanosc.le for nanobeams based on nonloc.l elastic.stress field theory:equilibrium,governing equation and static.deflec.ion

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Applied Mathematic. and Mec.anic.(English Edition) 2010年第1期31卷 37-54页

作者： c. w. LIM Department of Building and c.nstruc.ion City University of Hong Kong

This paper has suc.essfully addressed three c.itic.l but overlooked issues in nonloc.l elastic.stress field theory for nanobeams：（i） w.y does the presenc. of inc.easing nonloc.l effec.s induc. reduc.d nanostruc.ural stiffness in many, but not c.nsistently for all, c.ses of study, i.e., inc.easing static.deflec.ion, dec.easing natural frequenc. and dec.easing buc.ling load, although physic.l intuition ac.ording to the nonloc.l elastic.ty field theory first established by Eringen tells otherw.se？（ii） the intriguing c.nc.usion that nanosc.le effec.s are missing in the solutions in many exemplary c.ses of study, e.g., bending deflec.ion of a c.ntilever nanobeam w.th a point load at its tip; and （iii） the non-existenc. of additional higher-order boundary c.nditions for a higher-order governing differential equation. Applying the nonloc.l elastic.ty field theory in nanomec.anic. and an exac. variational princ.pal approac., w. derive the new.equilibrium c.nditions, do- main governing differential equation and boundary c.nditions for bending of nanobeams. These equations and c.nditions involve essential higher-order differential terms w.ic. are opposite in sign w.th respec. to the previously studies in the static. and dynamic. of nonloc.l nano-struc.ures. The differenc. in higher-order terms results in reverse trends of nanosc.le effec.s w.th respec. to the c.nc.usion of this paper. Effec.ively, this paper reports new.equilibrium c.nditions, governing differential equation and boundary c.ndi- tions and the true basic.static.responses for bending of nanobeams. It is also c.nc.uded that the w.dely ac.epted equilibrium c.nditions of nonloc.l nanostruc.ures are in fac. not in equilibrium, but they c.n be made perfec. should the nonloc.l bending moment be replac.d by an effec.ive nonloc.l bending moment. These c.nc.usions are substantiated, in a general sense, by other approac.es in nanostruc.ural models suc. as strain gradient theory, modified c.uple stress models and experim

关键词： bending effec.ive nonloc.l bending moment nanobeam nanomec.anic.,nanosc.le nonloc.l elastic.stress strain gradient

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Asymptotic.analysis of a vibrating c.ntilever w.th a nonlinear boundary

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Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2009年第9期52卷 1414-1422页

作者： c. w. LIM Department of Building and c.nstruc.ion City University of Hong Kong

Nonlinear vibration of a c.ntilever in a c.ntac. atomic.forc. mic.osc.pe is analyzed via an asymptotic.approac.. The asymptotic.solution is sought for a beam equation w.th a nonlinear boundary c.ndition. The steady-state responses are determined in primary resonanc. and subharmonic.resonanc.. The relations betw.en the response amplitudes and the exc.tation frequenc.es and amplitudes are derived from the solvability c.ndition. Multivaluedness oc.urs in the relations as a c.nsequenc. of the nonlinearity. The stability of steady-state responses is analyzed by use of the Lyapunov linearized stability theory. The stability analysis predic.s the jumping phenomenon for c.rtain parameters. The c.rves of the response amplitudes c.anging w.th the exc.tation frequenc.es are numeric.lly c.mpared w.th those obtained via the method of multiple sc.les. The c.lc.lation results demonstrate that the tw. methods predic. the same varying tendenc.es w.ile there are small quantitative differenc.s.

关键词： asymptotic analysis vibration nonlinear boundary c.ndition beam c.ntac.

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Nonlinear vibrations of nano-beams ac.ounting for nonloc.l effec. using a multiple sc.le method

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Sc.enc. c.ina(Tec.nologic.l Sc.enc.s) 2009年第3期52卷 617-621页

作者： c. w. LIM Department of Building and c.nstruc.ion City University of Hong Kong

The nonlinear free transverse vibrations of a nano-beam on simple supports are investigated based on nonloc.l elastic.ty theory. The governing equation is proposed by c.nsidering geometric.nonlinearity due to finite stretc.ing of the beam. The method of multiple sc.les is applied to the governing equa- tion to evaluate the nonlinear natural frequenc.es. Numeric.l examples are presented to demonstrate the analytic.l results and highlight the c.ntributions of the nonlinear term and nonloc.l effec..

关键词： nonloc.l elastic.ty theory nanobeam natural frequenc. method of multiple sc.les

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Dynamic.behaviour of axially moving nanobeams based on nonloc.l elastic.ty approac.

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Ac.a Mec.anic. Sinic. 2010年第5期26卷 755-765页

作者： c. w. Lim c. Li Ji-Lin Yu Department of Building and c.nstruc.ion City Universityof Hong Kong Tat Chee Avenue KowloonHong Kong SAR China State Key Laboratory of Struc.ural Analysis for IndustrialEquipment Dalian University of TechnologyDalian 116024 China Department of Modem Mec.anic. University of Scienceand Technology of China Hefei 230026 China

In this artic.e, transverse free vibrations of axially moving nanobeams subjec.ed to axial tension are studied based on nonloc.l stress elastic.ty theory. A new.higher-order differential equation of motion is derived from the variational princ.ple w.th c.rresponding higher-order, non-c.assic.l boundary c.nditions. Tw. supporting c.nditions are investigated, i.e. simple supports and c.amped supports. Effec.s of nonloc.l nanosc.le, dimensionless axial veloc.ty, density and axial tension on natural frequenc.es are presented and disc.ssed through numeric.l examples. It is found that these fac.ors have great influenc. on the dynamic.behaviour of an axially moving nanobeam. In partic.lar, the nonloc.l effec. tends to induc. higher vibration frequenc.es as c.mpared to the results obtained from c.assic.l vibration theory. Analytic.l solutions for c.itic.l veloc.ty of these nanobeams w.en the frequenc. vanishes are also derived and the influenc.s of nonloc.l nanosc.le and axial tension on the c.itic.l veloc.ty are disc.ssed.

关键词： Axially moving nanobeams c.itic.l veloc.ty Free vibration Natural frequenc. Nonloc.l elastic.ty

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Highly c.nduc.ive and stable iodine doped argyrodite elec.rolyte for all-solid-state lithium batteries

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Journal of Energy c.emistry 2025年第1期100卷 50-58页

作者： Gaozhan Liu Jing Zhang Jing Yang Jinghui c.en Xingyue xiao Xiayin Yao Ningbo Institute of Materials Tec.nology and Engineering Chinese Academy of Sciences c.nter of Materials Sc.enc. and Optoelec.ronic. Engineering University of Chinese Academy of Sciences

Lithium argyrodites w.th high ionic.c.nduc.ivity and low.c.st are c.nsidered as one of the most prospec.ive solid elec.rolytes for all-solid-state lithium ***,the poor c.emic.l stability and c.mpatibility w.th lithium metal limit their ***,Li5.4PS4.4c.1.4I0.2solid elec.rolyte w.th high ionic.c.nduc.ivity of 11.49 m S c.-1and improved c.emic.l stability is synthesized by iodine *** ultra-thin Li5.4PS4.4c.1.4I0.2membrane w.th thic.ness of 10μm c.n be obtained by w.t c.ating proc.ss,exhibiting a high ionic.c.nduc.ivity of 2.09 mS c.-1and low.areal resistanc. of 1.17Ω***,iodine doping c.uld in-situ form LiI at the lithium/elec.rolyte interfac. and improve the c.itic.l c.rrent density of Li5.4PS4.4c.1.6from 0.8 to 1.35 mA *** resultant Lic.O2/Li5.4PS4.4c.1.4I0.2/Li battery show. exc.llent c.c.ing stability at 1 c.w.th a reversible spec.fic.c.pac.ty of 110.1 mA h g-1and a retention of 80.5% after 1000 *** addition,the assembled Lic.O2/Li5.4PS4.4c.1.4I0.2membrane/Li pouc. c.ll delivers an initial disc.arge c.pac.ty of 110.4 mA h g-1and 80.5% c.pac.ty retention after 100 c.c.es.

关键词： Argyrodite elec.rolytes Iodine doping Ionic.c.nduc.ivity Stability All-solid-state lithium battery

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Enhanc.d post-c.mbustion c.2 c.pture and direc. air c.pture by plasma surfac. func.ionalization of graphene adsorbent

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Journal of Energy c.emistry 2025年第1期100卷 653-664页

作者： Rahul Navik Eryu w.ng xiao Ding Huang Yunyi Yiyu Liu Jia Li Guangdong-Hong Kong Joint Laboratory for c.rbon Neutrality Jiangmen Laboratory of Carbon and Science and Technology Guangzhou HKUST Fok Ying Tung Researc. Institute The Hong Kong University of Sc.enc. and Tec.nology (Guangzhou) c.rbon Neutrality and c.imate c.ange Thrust Society Hub The Hong Kong University of Science and Technology (Guangzhou) Stoddart Institute of Molec.lar Sc.enc. Department of Chemistry Zhejiang University

Graphene has enormous potential to c.pture c.2due to its unique properties and ***,graphene-based adsorbents have draw.ac.s of low.r c.2adsorption c.pac.ty and poor *** w.rk demonstrates a one-step rapid and sustainable N2/H2plasma treatment proc.ss to prepare graphene-based sorbent material w.th enhanc.d c.2adsorption *** treatment direc.ly enric.es amine spec.es,inc.eases surfac. area,and improves textural *** c.2adsorption c.pac.ty inc.eases from 1.6 to 3.3 mmol/g for c.pturing flue gas,and from 0.14 to 1.3 mmol/g for direc. air c.pture （DAc..Importantly,the elec.rothermal property of the plasma-modified aerogels has been signific.ntly improved,resulting in faster heating rates and signific.ntly reduc.ng energy c.nsumption c.mpared to c.nventional external heating for regeneration of *** aerogels display improved selec.ivity of 42 and 87 after plasma modific.tion for 5 and 10 min,*** plasma-treated aerogels display minimal loss betw.en 17%and 19% in c.pac.ty after 40 adsorption/desorption c.c.es,rendering exc.llent *** N2/H2plasma treatment of adsorbent materials w.uld low.r energy expenses and prevent negative effec.s on the global ec.nomy c.used by c.imate c.ange.

关键词： c.rbon neutrality c. 2 c.pture c.imate c.ange Plasma treatment Graphene aerogel

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