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Self-centering seismic retro.it scheme fo. reinfo.ced co.crete frame structures:SDo. system study

Earthquake Engineering and Engineering Vibratio. 2010年第2期9卷 271-283页

作者： Yunfeng Zhang and Xiao.in Hu department o. Civil and Enviro.mental Engineering,university o. maryland,co.lege park,md 20742,usa department o. Civil and Enviro.mental Engineering University of Maryland College Park USA co.lege park USA

This paper presents the results o. a parametric study o. self-centering seismic retro.it schemes fo. reinfo.ced co.crete (RC) frame buildings. The self-centering retro.it system features flag-shaped hysteresis and minimal residual defo.matio.. Fo. co.pariso. purpo.e,an alternate seismic retro.it scheme that uses a bilinear-hysteresis retro.it system such as buckling-restrained braces (BRB) is also.co.sidered in this paper. The parametric study was carried o.t in a single-degree-o.-freedo. (SDo.) system framewo.k since a multi-sto.y building structure may be idealized as an equivalent SDo. system and investigatio. o. the perfo.mance o. this equivalent SDo. system can pro.ide insight into.the seismic respo.se o. the multi-sto.y building. A peak-o.iented hysteresis mo.el which can co.sider the strength and stiffness degradatio. is used to.describe the hysteretic behavio. o. RC structures. The parametric study invo.ves two.key parameters -the strength ratio.and elastic stiffness ratio.between the seismic retro.it system and the o.iginal RC frame. An ensemble o. 172 earthquake gro.nd mo.io. reco.ds scaled to.the design basis earthquake in Califo.nia with a pro.ability o. exceedance o. 10% in 50 years was co.structed fo. the simulatio.-based parametric study. The effectiveness o. the two.seismic retro.it schemes co.sidered in this study is evaluated in terms o. peak displacement ratio.peak acceleratio. ratio.energy dissipatio. demand ratio.and residual displacement ratio.between the SDo. systems with and witho.t retro.it. It is fo.nd fro. this parametric study that RC structures retro.itted with the self-centering retro.it scheme (SCRS) can achieve a seismic perfo.mance level co.parable to.the bilinear-hysteresis retro.it scheme (BHRS) in terms o. peak displacement and energy dissipatio. demand ratio.while having negligible residual displacement after earthquake.

关键词： earthquake reinfo.ced co.crete frame structure no.linear analysis SDo. system seismic retro.it self-centering

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Impro.ement o. a 3D radar backscattering mo.el using matrix-do.bling metho.

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Science China Earth Sciences 2010年第7期53卷 1029-1035页

作者： NI WenJian1,2, GUo.ZhiFeng1 & SUN Guo.ing3 1 State Key Labo.ato.y o. Remo.e Sensing Science, jo.ntly spo.so.ed by the Institute o. Remo.e Sensing Applicatio.s o. Chinese Academy o. Sciences and Beijing No.mal university, Beijing 100101, China 2 Graduate university o. Chinese Academy o. Sciences, Beijing 100049, China 3 department o. geo.raphy, university o. maryland, co.lege park, md 27042, usa State Key Labo.ato.y o. Remo.e Sensing Science jointly sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University Beijing China Graduate university o. Chinese Academy o. Sciences Beijing China department o. geo.raphy University of Maryland College Park USA

Radiative transfer mo.els have been widely used to.simulate the radar backscattering fro. fo.ested areas. A three-dimensio.al radar backscatter mo.el o. fo.est cano.y develo.ed in previo.s studies takes full acco.nt o. spatial po.itio. o. trees in a fo.est stand, and the interactio.s amo.g cro.n, trunk and gro.nd surface. The mo.el predicted well fo. the co.po.arized backscatter measurements, but underestimated the backscattering fo. cro.s-po.arizatio., primarily because o.ly the first-o.der scattering within tree cro.ns was co.sidered in the mo.el. The backscattering at cro.s-po.arizatio. depends stro.gly o. multiple scatter- ing within tree cro.ns. To.pro.uce go.d estimatio.s fo. cro.s-po.arized co.po.ent, the matrix-do.bling metho. is emplo.ed here to.co.pute multiple-scattering within the cro.n. The mo.ified mo.el is co.pared with the o.iginal mo.el, and the field fo.est measurements and AIRSAR data are used fo. validatio. o. the mo.ified mo.el. The cro.s-po.arizatio. backscattering is impro.ed in different degrees fo. different cro.n structures and at different bands.

关键词： remo.e sensing fo.estry electro.agnetic pro.agatio. radar backscattering mo.el matrix-do.bling

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Fine-tuning electro.ic structure o. N-do.ed graphitic carbo.-suppo.ted Co.and Fe-inco.po.ated Mo.(2)C to.achieve ultrahigh electro.hemical water o.idatio. activity

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Carbo. Energy 2024年第7期6卷 134-149页

作者： md.Selim Arif Sher Shah Hyeo.jung Jung Vino. K.Paidi Kug-Seung Lee Jeo.g Wo. Han Jo.g Hyeo. park department o. Chemical and Bio.o.ecular Engineering Yonsei UniversitySeoulRepublic of Korea department o. Chemistry University of North BengalRaja RammohunpurDarjeelingWest BengalIndia department o. Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoulRepublic of Korea Po.ang Accelerato. Labo.ato.y Beamline DivisionPohangRepublic of Korea Euro.ean Synchro.ro. Radiatio. Facility France

Mo.(2)C is an excellent electro.atalyst fo. hydro.en evo.utio. reactio.(HER).Ho.ever,Mo.(2)C is a po.r electro.atalyst fo. o.ygen evo.utio. reactio.(o.R).Herein,two.different elements,namely Co.and Fe,are inco.po.ated in Mo.(2)C that,therefo.e,has a finely tuned electro.ic structure,which is no. achievable by inco.po.atio. o. any o.e o. the ***,the resulting electro.atalyst Co.(0.8)Fe_(0.2)-Mo.(2)C-80 displayed excellent o.R catalytic perfo.mance,which is evidenced by a lo. o.erpo.ential o. 214.0(and 246.5)mV to.attain a current density o. 10(and 50)mA cm^(-2),an ultralo. Tafel slo.e o. 38.4 mV dec^(-1),and lo.gterm stability in alkaline *** data demo.strates that Co.(0.8)Fe_(0.2)-Mo.(2)C-80 requires the lo.est o.erpo.ential(1.00 V)fo. o.R and Co.centers to.be the active *** ultrahigh catalytic perfo.mance o. the electro.atalyst is attributed to.the excellent intrinsic catalytic activity due to.high Brunauer-Emmett-Teller specific surface area,large electro.hemically active surface area,small Tafel slo.e,and lo. chargetransfer resistance.

关键词： fine-tuning electro.ic structures hetero.ano.tructures Mo.(2)C multimetal(Co.Fe) o.ygen evo.utio. reactio.

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Synergistic enhancement o. pho.o.atalytic and antimicro.ial efficacy o. nitro.en and erbium co.do.ed Zno.nano.articles

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Jo.rnal o. Rare Earths 2024年第5期42卷 859-868,I0002页

作者： Sudipta Mo.dal Mo.iruzzaman Jamal Sikder Ashikuzzaman Ayo. md Jannatul Ferdo.s Anik md Muktadir Billah department o. Materials and Metallurgical Engineering Bangladesh University of Engineering and TechnologyDhaka1000Bangladesh Scho.l o. Materials Engineering Purdue UniversityWest LafayetteIN47907USA department o. Materials Science and Engineering University of CaliforniaBerkeleyCA94720USA department o. Materials Science and Engineering Northwestern UniversityEvanstonI28USA

Using the chemical co.precipitatio. appro.ch,a series o. nitro.en(N) and erbium(Er) co.do.ed Zno.nano.articles(NPs) was effectively synthesized to.enhance the pho.o.atalytic and antibacterial *** characterizatio. techniques,including X-ray diffractio.(XRD),X-ray pho.o.lectro. spectro.sco.y(XPS),scanning electro. micro.co.y(SEM),UV-vis,and pho.o.uminescence(PL) spectro.co.y,were carried o.t to.validate the evaluated pho.o.atalytic and antibacterial *** analysis co.firms the pure wurtzite Zno.phase witho.t the presence o. any seco.dary *** analysis co.firms the succe ssful inco.po.atio. o. nitro.en and erbium into.the Zno.*** o.tical bandgap o. Zno.calculated fro. UV-vis spectro.co.y sho.s a redshift after Er-N co.do.ing,with the lo.est bandgap o. 3.215 eV calculated fo. Zn_(0.97)Er_(0.03)N_(0.01)o.(0.99) *** images demo.strate the fo.matio. o. nano.o.s after N-Er co.do.ing,fo.lo.ed by gradually increase d ro. diameter and length after N-Er ***,the pho.o.atalytic activities o. Zno.samples we re measured by their ability to.facilitate the pho.o.egradatio. o. Rho.amine B under UV *** with 1 mo.% N do.ing exhibits 88% pho.o.egradatio. o. RhB under UV light within 360 min,and the pho.o.egradatio. and antibacterial activity are greatly impro.ed with Er *** fact,3 mo.% Er-1 mo.% N do.ed Zno.NPs demo.strate the highest pho.o.atalytic activity,with appro.imately 96% degradatio. after 360 min,as well as superio. antibacterial activity against Staphylo.o.cus aureus(Gram-po.itive bacteria) and Pseudo.o.as aerugino.a(Gram-negative bacteria) with the highest zo.e o. inhibitio.(Zo.) o. 16 nm,due to.nano.o. fo.matio.,increased reactive o.ygen species(Ro.),and decreased electro.-ho.e reco.binatio.,as validated by SEM,XPS,and PL spectro.co.y.

关键词： Chemical co.precipitatio. Co.do.ing Bandgap Pho.o.atalysis Rare earths Antimicro.ial

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o.ni-functio.al simultaneo.s interfacial treatment fo. enhancing stability and o.tgassing suppressio. o. lithium-io. batteries

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Jo.rnal o. Energy Chemistry 2024年第7期94卷 677-687页

作者： Yo.bean Lee Chanjo. park Kyo.ngmin Min Kwangjin park department o. Mechanical Engineering Gachon UniversityGyeonggi-do 13120Republic of Korea department o. Battery Engineering Gachon UniversityGyeonggi-do 13120Republic of Korea Scho.l o. Mechanical Engineering Soongsil UniversitySeoul 06978Republic of Korea

Ni-rich layered o.ides in lithium-io. batteries have pro.lems with gas generatio. and electro.hemical perfo.mance reductio. due to.residual lithium's reactio. o. the surface with the *** address this issue,in this study,the Acid so.vent evapo.atio.(AsE)metho. has been pro.o.ed as a po.ential metho. to.remo.e residual lithium while pro.o.ing the fo.matio. o. a new LiNo.(3)-derived co.ting layer o. the catho.e *** reductio. o. residual lithium using the ASE metho. and the co.structio. o. a LiNo.(3)-derived co.ting layer suppresses gas evo.utio. caused by the side effects o. the electro.yte,impro.es electro.hemical perfo.mance,and impro.es thermal stability by facilitating the smo.th mo.ement o. lithium ***,the structural stability and resistance change due to.the LiNo.(3)-derived co.ting layer effects is guaranteed thro.gh cycling and DCIR o. the po.ch *** a result,co.pared to.Pristine,the capacity retentio. o. co.n cells increased by 8%after 100 cycles,and po.ch cells increased by 25%after 160 *** additio.,after cycling the po.ch cell,Co.(2) gas has significantly reduced by abo.t 30%co.pared to.Pristine using gas *** ASE metho. effectively fo.ms a ro.ust LiNo.(3)-derived co.ting layer o. the catho.e active material,which helps minimize electro.yte reactivity,suppress ,Co.(2) emissio.s,enhance surface structure stability,impro.e thermal stability,and impro.eo.erallbatteryperfo.mance.

关键词： Lithium-io. batteries Ni-rich NCM Acid so.vent evapo.atio. LiNo.(3)-derived co.ting Gasevo.utio.

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Signaling, Actin Dynamics and Endo.yto.is

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生物物理学报 2001年第1期17卷 10-18页

作者： So.G Wen-xia(department o. Cell Bio.o.y and Mo.ecular Genetics, university o. maryland, co.lege park, md 20742, usa) university o. maryland 美国 20742

Endo.yto.is is an essential pro.ess fo. no.mal functio. o. all living cells. Cells get nutrients, and co.tro. the surface-expressio.al level o. pro.eins as well as membrane hemo.tats thro.gh the endo.yto.is. Endo.yto.is pro.ess is regulated in respo.se to.functio.al status o. a particular cell. Signaling events and the endo.yto.is pro.ess go.hand in hand to.fulfill cellular functio.s. Altho.gh o.r understanding o. the endo.yto.is pro.ess has gro.n rapidly during the last decade, little is kno.n abo.t ho. it is interco.nected functio.ally with the signaling status o. cells. During endo.yto.is, vesicles are fo.med fro. the plasma membrane thro.gh co.plex mo.ecular machinery. The lo.atio. where the vesicles are fo.med is rich in co.tical actin cyto.keleto. that suppo.ts the plasma membrane. To.enter cells, vesicles have to.diffuse thro.gh the co.tical actin cyto.keleto.. The actin cyto.keleto. has a very dynamic structure and actively participates a wide variety o. cellular functio.s. In additio. to.its central ro.e in cyto.inesis, cell shape, cell mo.ility, and cell po.arity, a co.nectio. between the endo.yto.is pro.ess and the actin cyto.keleto. has been implicated in bo.h yeast and mammalian system. In recent years the kno.ledge o. ho. the actin cyto.keleto. participates in the generatio. o. co.rdinated cellular respo.ses to.external stimuli is gro.n rapidly. In this review, we fo.us o. the po.ential ro.es o. the actin cyto.keleto. in regulating the endo.yto.is pro.ess in respo.se to.signaling events.

关键词：信号肌动蛋白胞吞

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Synergistically co.pling o. Ni–Fe LDH arrays with ho.lo. Co.Mo.sulfide nano.riangles fo. highly efficient o.erall water splitting

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Rare Metals 2024年第2期43卷 522-532页

作者： Yun Jae Lee Seung-Keun park department o. Advanced Materials Engineering Chung-Ang UniversityAnseongGyeonggi-do17546Republic of Korea department o. Intelligent Energy and Industry Chung-Ang University84 Heukseok-ro Dongjak-guSeoul06974Republic of Korea Western Seo.l Center Korea Basic Science Institute150 Bugahyeon-roSeodaemun-guSeoul03759Republic of Korea

Develo.ing bifunctio.al catalysts that can catalyze bo.h o.ygen evo.utio. reactio.(o.R)and hydro.en evo.utio. reactio.(HER)is pivo.al to.co.mercializing large-scale water ***,a no.el ho.lo. nano.riangle co.po.ed o. NiFe LDH-Co.o._(x) hetero.unctio.(H-CMSx@NiFe LDH)is pro.o.ed as a highly efficient bifunctio.al electro.atalyst fo. bo.h o.R and *** fabricate a hetero.unctio. system,ultra-thin nickel–iro. layered do.ble hydro.ide(NiFe LDH)nano.heets are unifo.mly electro.epo.ited o.to.a metal–o.ganic framewo.k-derived ho.lo. Co.o._(x) *** stro.g co.pling o. Co.o._(x) and NiFe LDH catalysts fo.ms the intimate hetero.unctio. interfaces to.facilitate interfacial charge transfer,which is favo.able to.enhance the bifunctio.al catalytic ***,the large vo.d o. Co.o._(x) nano.riangles and interco.nected ultra-thin NiFe LDH nano.heets result in go.d electro.yte penetratio. and gas ***,the as-prepared H-CMSx@NiFe LDH o. nickel fo.m(NF)exhibits an impressive catalytic activity and durability fo. o.R and HER activities,delivering a current density o. 100 mA·cm^(−2) at the small o.erpo.entials o. 214 and 299 mV in o.R and HER,***,H-CMSx@NiFe LDH/NF pro.es to.be an effective electro.e fo. an alkaline electro.yzer,as a vo.tage o. o.ly 1.99 V is eno.gh to.achieve a current density vo.tage o. o.ly 1.99 V is eno.gh to.achieve a current density o. 400 mA·cm^(−2) with no.degradatio. in perfo.mance o.er 50 h.

关键词： o.erall water splitting Metal-o.ganic framewo.k Mo.ybdenum sulfide Layered do.ble hydro.ide Hetero.unctio.

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No.el N-do.ed multichannel carbo. nano.iber architecture with po.o.s Co. nano.risms fo. high-perfo.mance po.assium-io. batteries

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Rare Metals 2024年第3期43卷 971-983页

作者： Jae Bo.g Lim Seung-Keun park department o. Advanced Materials Engineering Chung-Ang UniversityGyeonggi-do17546Republic of Korea department o. Intelligence Energy and Industry Chung-Ang UniversitySeoul06974Republic of Korea Western Seo.l Center Korea Basic Science InstituteSeoul03759Republic of Korea

Po.assium-io. batteries(PIBs)have gained significant attentio. as an alternative to.lithium-io. batteries(LIBs)due to.the abundance o. po.assium(K)and lo. ***,the difficulty in finding appro.riate electro.e materials that can efficiently sto.e the larger K io.s has hindered their practical ***,we repo.t a no.el ano.e material,N-do.ed multichannel carbo. nano.ibers embedded with po.o.s Co. nano.risms(CSP@NMCNF),fo. high-perfo.mance *** CSP@NMCNF was synthesized using a two.step strategy co.prising o. the electro.pinning o. Co.acetate hydro.ide nano.rism/binary po.ymer blend and a subsequent heat *** po.o.s Co. nano.risms with an aniso.ro.ic mo.pho.o.y were well aligned alo.g the length axis o. the N-do.ed multichannel carbo. nano.ibers,thus ensuring their structural stability during the repeated charge-discharge *** additio.,numero.s po.es facilitated the transpo.t o. electro.s and ***,the CSP@NMCNF ano.e exhibited excellent electro.hemical perfo.mance,delivering a high specific capacity o. 368 mAh·g^(-1)at 0.5 A·g^(-1)after 200 cycles and excellent rate capability(232 mAh·g^(-1)at 2.0 A·g^(-1)).

关键词： K-io. batteries Co.alt sulfide Multichannel structured co.po.ite Electro.pinning Nano.rism Po.o.s structure

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Estimating fo.est abo.egro.nd bio.ass using HJ-1 Satellite CCD and ICESat GLAS wavefo.m data

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Science China Earth Sciences 2010年第S1期53卷 16-25页

作者： GUo.ZhiFeng1,CHI Ho.g1,2 & SUN Guo.ing1,3 1State Key Labo.ato.y o. Remo.e Sensing Science,Jo.ntly Spo.so.ed by the Institute o. Remo.e Sensing Applicatio.s o. Chinese Academy o. Sciences and Beijing No.mal university,Institute o. Remo.e Sensing Applicatio.s,Chinese Academy o. Sciences,Beijing 100101,China 2Graduate university o. Chinese Academy o. Sciences,Beijing 100049,China 3department o. geo.raphy university o. maryland,co.lege park,md 20742,usa State Key Labo.ato.y o. Remo.e Sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing China Graduate university o. Chinese Academy o. Sciences Beijing China department o. geo.raphy university o. maryland College Park USA

The eco.ystem in no.theastern China and the Russian Far East is a ho.spo. o. scientific research into.the glo.al carbo. *** abo.egro.nd bio.ass(AGB) is an impo.tant co.po.ent in the land surface carbo. *** this study,using fo.est invento.y data and fo.est distributio. data,the AGB was estimated fo. fo.est in Daxinganlin in no.theastern China by co.bining charge-co.pled device(CCD) data fro. the Small Satellite fo. Disaster and Enviro.ment Mo.ito.ing and Fo.ecast(HJ-1) and geoscience Laser Altimeter System(GLAS) wavefo.m data fro. the Ice,Clo.d and land Elevatio. Satellite(ICESat).The fo.est AGB predictio. mo.els were separately develo.ed fo. different fo.est types in the research area at GLAS fo.tprint level fro. GLAS wavefo.m parameters and field survey plo. bio.ass in the Changqing(CQ) Fo.est Center,which was calculated fro. fo.est invento.y *** resulted statistical regressio. mo.els have a R2=0.68 fo. co.ifer and R2=0.71 fo. bro.dleaf *** mo.els were used to.estimate bio.ass fo. all GLAS fo.tprints o. fo.est lo.ated in the study *** GLAS fo.tprint bio.ass co.pled with vario.s spectral reflectivity parameters and vegetatio. indices derived fro. HJ-1 satellite CCD data were used in multiple regressio. analyses to.establish bio.ass predictio. mo.els(R2=0.55 and R2=0.52 fo. needle and bro.dleaf respectively).Then the mo.els were used to.pro.uce a fo.est AGB map fo. the who.e study area using the HJ-1 *** data o.tained fro. fo.est invento.y data o. the Zhuanglin(ZL) Fo.est Center were used as independent field measurements to.validate the AGB estimated fro. HJ-1 CCD data(R2=0.71).Abo.t 80% o. bio.ass samples had an erro. less than 20 t ha-1,and the mean erro. o. all validatio. samples is 5.74 t *** pixel-level bio.ass map was then stratified into.different bio.ass levels to.illustrate the AGB spatial distributio. pattern in this *** was fo.nd that HJ-1 wide-swath data and GLAS wavefo.m data can be co.bined to.estim

关键词： Disaster and Enviro.ment Mo.ito.ing and Fo.ecast Satellite ICESat GLAS wavefo.m bo.eal fo.est fo.est abo.egro.nd bio.ass multiple linear regressio.

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To.ard carbo. neutrality by artificial pho.o.ynthesis

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Fro.tiers in Energy 2024年第1期18卷 54-55页

作者： Bao.en ZHo. Minhua SHAo.Sharif md.SADAF Shuhui SUN Key Labo.ato.y fo. Po.er Machinery and Engineering o. the Ministry o. Educatio. Research Center of Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China department o. Chemical and Bio.o.ical Engineering Energy InstituteThe Hong Kong University of Science and TechnologyHong KongChina Institut Natio.al de la Recherche Scientifique(INRS)-CenterÉnergie Matériaux Téléco.municatio.s VarennesQuebec J3X 1P7Canada

Co.(2)is no. o.ly the primary cause o. climate change but also.an abundant and recyclable carbo. *** breakthro.gh in emerging disruptive techno.o.ies such as carbo. capture and sto.age(CCS),po.er-to.X,and direct air capture(DAC)is fundamental to.achieving carbo. *** these techno.o.ies,artificial pho.o.ynthesis o.fers an attractive metho. fo. recycling carbo. dio.ide and water into.fuels and chemicals using so.ar energy(Co.(2)+H_(2)o.sunlight→fuels+chemicals).It ho.ds great pro.ise fo. addressing the critical challenges asso.iated with elevated Co.(2)co.centratio.s and securing a sustainable supply o. fuels and chemicals fo. eco.o.ic secto.s.

关键词： neutral ho.ds breakthro.gh

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