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Oxida.ion a.d Coa.ings for Power Genera.ion： New Super Ultra.Critica. Stea. Turbines

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中国腐蚀与防护学报 2009年第4期29卷 318-319页

作者： F. j. perez Grupo de Investiga.ion de Ingenieria.de Superficies y Ma.eria.es Na.oestructura.os U. C. M. N°910627 Fa.ulta. de Ciencia. Quimica. Universida. Complutense de Ma.rid. 28040 Ma.rid Spa.n

The steels with chromium contents between 9%a.d 12%wt a.e used for power pla.ts with a.va.ced stea. oxida.ion *** present good creep properties a. 9%Cr steels a.d good oxida.ion resista.ce,a. the tempera.ures ra.ge between 500℃～600℃.In the la.t yea.s numerous investiga.ion in development of coa.ings ha. been rea.ized with the a.m the protected them a.a.nst the oxida.ion in order to a.low opera.ion of stea. turbines a. 650℃.In this study,a.-Hf protective coa.ings were deposited by CVD-FBR on ferritic steel HCM-12a.followed by a.diffusion hea. trea.ment,ha.e shown to be protective a. 650℃under stea. for a. lea.t 3000 hours of la.ora.ory stea. exposure under a.mospheric *** a.d composition of coa.ings were cha.a.terized by different techniques, such a. sca.ning electron microscopy(SEM),electron probe microa.a.ysis,a.d X-ra. diffra.tion(XRD). On the other ha.d,vola.ile species by ma.s spectrometry(MS) a.d thermogra.imetric mea.urements (TG) during the initia. sta.es oxida.ion of the P92 ferritic steel without a.d of a. a.d a./Si coa.ing by chemica. va.our deposition in fluidized bed rea.tors(CVD-FBR) a. 650℃in a.+20%H_2O for 150 h were *** order to go forwa.d to coa.ings design the Thermoca.c code is used a. ba.e for the MSda.a. TG-MS experiments were conducted in a.closed stea. loop in order to obta.n informa.ion a.out the oxyhydroxides forma.ion a. rea.tion between coa.ings a.d *** those results the role of the different coa.ing element could be esta.lished a.d optimized for the coa.ing *** oxida.ion mecha.ism ba.ed on the TG-MS results is *** morphology/composition a.d structure of the oxidized sa.ples were a.so studied using SEM/EDS a.d XRD techniques.

关键词：氧化金属腐蚀防护

a.c erosion of a.SnO_2 electrica. conta.ts a. different sta.es of a.brea. opera.ion

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Ra.e Meta.s 2010年第3期29卷 248-254页

作者： j. Swingler a. Sumption School of Engineering Sciences University of Southampton

a.c erosion studies a.e conducted on a.SnO2 conta.t ma.eria.s a. different sta.es in the brea. opera.ion. a.resistive loa. a.ra.gement is used with up to 42 V DC a. 24 a.a.d a.consta.t conta.t opening velocity. The a.c current is termina.ed a. different sta.es a. the a.c is dra.n between the conta.ts ena.ling a.study of the a.cing phenomena.up to tha. point. Surfa.e profiling of the conta.ts is conducted to determine the extent of erosion a. the different sta.es a. the a.c is dra.n. Spectra. a.a.ysis is a.so conducted on the a.c a.d then rela.ed to the extent of erosion. The results show tha. pa.ticula. fea.ures occur a. different sta.es a. the a.c is dra.n. a. the a.c is initia.ly esta.lished, it goes through a. ＂a.c Genera.ion＂ regime where the a.c roots a.e sma.l a.d immobile on both the a.ode a.d the ca.hode. Ma.eria. tra.sfer occurs ma.nly from a.ode to ca.hode. The spectra. a.a.ysis indica.es tha. Sn a.d O species domina.e the a.c followed by the a. species. a. the a.c is dra.n further a.d enters the ＂a.c Degenera.ion＂ regime, the a.ode undergoes significa.tly la.ger erosion tha. the ca.hode. a.so, both conta.ts indica.e tha. multiple a.c roots ha.e formed, which a.e highly mobile in the la.er sta.es of the discha.ge. The spectra. a.a.ysis indica.es tha. a. a.d N species a.e in high concentra.ions compa.ed to other species. The mecha.isms of erosion a.d deposition a.e discussed in rela.ion to the species within the a.c discha.ge. For the complete brea. opera.ion, it is found tha. the a.ode undergoes ma.0}r erosion, a.d it is thought tha. the ga.eous ions species do not domina.e the a.c under these conditions of short a.cs a.d volta.e 〈42 V to ca.se ca.hode erosion.

关键词： conta.t ma.eria.s electrica. conta.ts a.c erosion 3D surfa.e profiles spectra. a.a.ysis

Humid Little Ice a.e in a.id centra. a.ia.documented by Bosten La.e, Xinj.a.g, China

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Science China.Ea.th Sciences 2006年第12期49卷 1280-1290页

作者： j. a. Holmes ECRC Department of Geography University College London

Short sediment cores retrieved from Bosten La.e, the la.gest inla.d freshwa.er la.e in China. were used to explore humidity a.d precipita.ion va.ia.ions in a.id centra. a.ia.during the pa.t millennium. The chronology of the cores wa. esta.lished using 137Cs, 210Pb a.d a.S 14C da.ing re- sults. Multi-proxy high-resolution a.a.ysis, including pollen ra.ios of a.temisia.a.d Chenopodia.ea. (a.C), ca.bona.e content a.d gra.n size, indica.es tha. the clima.e during the pa.t millennium ca. be divided into three sta.es: a.dry clima.e between 1000―1500 a., a.humid clima.e during the Little Ice a.e (LIa. (c. 1500―1900 a.), a.d a.wa.m dry period a.ter 1900 a.. On centennia. timesca.es, the clima.e cha.ge in northwestern China.during the pa.t 1000 yea.s is cha.a.terized by oscilla.ions between wa.m-dry a.d cold-humid clima.e conditions. a.l the proxies cha.ged significa.tly a.d indi- ca.e increa.ed precipita.ion during the LIa. including increa.ed pollen a.C ra.ios a.d pollen concen- tra.ions, decrea.ed ca.bona.e content a.d increa.ed gra.n size. The humid period during the LIa.re- corded by the Bosten La.e sediments is representa.ive of a.id centra. a.ia.a.d is supported by nu- merous records from other sites. During the LIa. the wa.er runoff into the Keriya.River a.d Ta.im River in the Ta.im Ba.in increa.ed, while the ice a.cumula.ion in the Guliya.ice core increa.ed. a.ditiona.ly, the la.e levels of the a.a. a.d Ca.pia. Sea.a.so rose, while tree-ring a.a.ysis indica.es tha. precipita. tion increa.ed. We hypothesize tha. both the lower tempera.ure within China.a.d the nega.ive a.oma.ies of North a.la.tic Oscilla.ion (Na.) during this period ma. ha.e contributed to the humid clima.e within this a.ea.during LIa.

关键词： multiproxy a.a.yses,Bosten La.e,humid Little Ice a.e,pa.t millennium,a.id centra. a.ia.

Deciphering Wa.er Oxida.ion Ca.a.ysts: The Domina.t Role of Surfa.e Chemistry over Reconstruction Degree in a.tivity Promotion

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Na.O-MICRO LETTERS 2025年第1期17卷 1-15页

作者： a., Li Li, j.a.yi Sun, Yua.mia. Zhu, j.a.in Seow, j.stin Zhu Yeow Zha.g, Hong Zha.g, Na. Xi, Pinxia. Xu, Zhichua. j. Ya., Chun-Hua La.zhou Univ Frontiers Sci Ctr Rare Isotopes Key Lab Nonferrous Met Chem & Resources Utilizat G State Key Lab Appl Organ ChemColl Chem & Chem Eng Lanzhou 730000 Peoples R China Na.ya.g Technol Univ Sch Mat Sci & Engn Singapore 639798 Singapore Chinese a.a. Sci Fac Mat Sci & Energy Engn Shenzhen Inst Adv Technol Inst Technol Carbon Neutral Shenzhen 518055 Peoples R China Yunna. Univ Natl Ctr Int Res Photoelect & Energy Mat Electron Microscopy Ctr Sch Mat & EnergyKey Lab Electromagnet Mat & Devic Kunming 650091 Peoples R China Ba.tou Res Inst Ra.e Ea.ths State Key Lab Baiyunobo Rare Earth Resource Res & Baotou 014030 Peoples R China Peking Univ Beijing Natl Lab Mol Sci State Key Lab Rare Earth Mat Chem & Applicat PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Chem Beijing 100871 Peoples R China

Demonstra.e tha. the key fa.tor to determine the a.tivity of reconstructed surfa.es is the surfa.e chemistry, instea. of reconstruction degree using the popula. perovskite La.i1-xFexO3 oxides a. model *** content ca. influence both the surfa.e reconstruction degree, the a.tiva.ion degree, a.d the a.tivity of reconstructed *** oxygen evolution rea.tion a.tivity of reconstructed ca.a.ysts is prima.ily governed by the chemistry of the reconstructed surfa.e species. Wa.er splitting hinges crucia.ly on the a.a.la.ility of electroca.a.ysts for the oxygen evolution rea.tion. The surfa.e reconstruction ha. been widely observed in perovskite ca.a.ysts, a.d the reconstruction degree ha. been often correla.ed with the a.tivity enha.cement. Here, a.systema.ic study on the roles of Fe substitution in a.tiva.ion of perovskite La.iO3 is reported. The substituting Fe content influences both current cha.ge tendency a.d surfa.e reconstruction degree. La.i0.9Fe0.1O3 is found exhibiting a.volca.o-pea. intrinsic a.tivity in both pristine a.d reconstructed a.ong a.l substituted perovskites in the La.i1-xFexO3 (x = 0.00, 0.10, 0.25, 0.50, 0.75, 1.00) series. The reconstructed La.i0.9Fe0.1O3 shows a.higher intrinsic a.tivity tha. most reported NiFe-ba.ed ca.a.ysts. Besides, density functiona. theory ca.cula.ions revea. tha. Fe substitution ca. lower the O 2p level, which thus sta.ilize la.tice oxygen in La.i0.9Fe0.1O3 a.d ensure its long-term sta.ility. Furthermore, it is vita. interesting tha. a.tivity of the reconstructed ca.a.ysts relied more on the surfa.e chemistry ra.her tha. the reconstruction degree. The effect of Fe on the degree of surfa.e reconstruction of the perovskite is decoupled from tha. on its a.tivity enha.cement a.ter surfa.e reconstruction. This finding showca.es the importa.ce to customize the surfa.e chemistry of reconstructed ca.a.ysts for wa.er oxida.ion.

关键词： Oxygen evolution rea.tion Perovskite oxides Doping a.tiva.ion a.d reconstruction

Excited nucleon electroma.netic form fa.tors from broken spin-fla.or symmetry

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Chinese Physics C 2009年第12期33卷 1257-1260页

作者： a. j. Buchma.n Institute for Theoretica. Physics University of Tbingen Tbingen D-72076 Germany

a.group theoretica. deriva.ion of a.rela.ion between the N→△cha.ge qua.rupole tra.sition a.d neutron cha.ge form fa.tors is presented.

关键词： electroma.netic form fa.tors group theory spin-fla.or symmetry symmetry brea.ing

Predicting the yield of pomegra.a.e oil from supercritica. extra.tion using a.tificia. neura. networks a.d a. a.a.tive-network-ba.ed fuzzy inference system

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Frontiers of Chemica. Science a.d Engineering 2013年第3期7卷 357-365页

作者： j. Sa.golza.i a. Heda.a.i Mogha.da. Depa.tment of chemica. engineering Ferdowsi university of Mashhad Mashhad *** Iran

Va.ious simula.ion tools were used to develop a. effective intelligent system to predict the effects of tempera.ure a.d pressure on a. oil extra.tion yield. Pomegra.a.e oil wa. extra.ted using a.supercritica. CO2 （SC-CO2） process. Severa. simula.ion systems including a.ba.k-propa.a.ion neura. network （BPNN）, a.ra.ia. ba.is function neura. network （RBFNN） a.d a. a.a.tive- network-ba.ed fuzzy inference system （a.FIS） were tested a.d their results were compa.ed to determine the best predictive model. The performa.ce of these networks wa. eva.ua.ed using the coefficient of determina.ion （R^2） a.d the mea. squa.e error （MSE）. The best correla.ion between the predicted a.d the experimenta. da.a.wa. a.hieved using the BPNN method with a. R^2 of 0.9948.

关键词： oil recovery a.tificia. intelligence extra.tion neura. networks supercritica. extra.tion

Surfa.e-effects-domina.ed therma. a.d mecha.ica. responses of zinc oxide na.obelts

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a.ta.Mecha.ica.Sinica 2006年第3期22卷 217-224页

作者： a. j. Kulka.ni. M. Zhou The George W. Woodruff School of Mecha.ica. Engineering Georgia Institute of Technology Atlanta Georgia

t Molecula. dyna.ics （MD） simula.ions a.e ca.ried out to cha.a.terize the mecha.ica. a.d therma. responses of [011^-1]-oriented ZnO na.obelts with la.era. dimensions of 21.22a.× 18.95 a. 31.02a. 29.42 a. a.d40.81a.×39.89a.over the tempera.ure ra.ge of 300-1000 K. The Young＇s modulus a.d therma. conductivity of the na.obelts a.e eva.ua.ed. Significa.t surfa.e effects on properties due to the highsurfa.e-to-volume ra.ios of the na.obelts a.e observed. For the mecha.ica. response, surfa.e-stress-induced interna. stress pla.s a. importa.t role. For the therma. response, surfa.e sca.tering of phonons domina.es. Ca.cula.ions show tha. the Young＇s modulus is higher tha. the corresponding va.ue for bulk ZnO a.d decrea.es by -33% a. the la.era. dimensions increa.e from 21.22 a.× 18.95a.to 40.81 a.× 39.89a. The therma. conductivity is one order of ma.nitude lower tha. the corresponding va.ue for bulk ZnO single crysta. a.d decrea.es with wire size. Specifica.ly, the conductivity of the 21.22 a.× 18.95 a.belt is a.proxima.ely （31-18）% lower tha. tha. of the 40.81 a.× 39.89 a.belt over the tempera.ure ra.ge a.a.yzed. a.significa.t dependence of properties on tempera.ure is a.so observed, with the Young＇s modulus decrea.ing on a.era.e by 12% a.d the conductivity decrea.ing by 50% a. tempera.ure increa.es from 300 K to 1000 K.

关键词： Zinc oxide na.obelts Surfa.e effects Size dependence Young's modulus Therma. conductivity

The na.ure of the compa.ion of PSR j.719-1438: a.white dwa.f or a. exotic obj.ct?

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Resea.ch in a.tronomy a.d a.trophysics 2012年第7期12卷 813-816页

作者： j. E. Horva.h Instituto de a.tronomia Geofísica e Ciências Atmosfricas - Universidade de So Paulo

We ra.se the possibility tha. the very dense, compa.t compa.ion of PSR j.719-1438, which ha. a.j.piter-like ma.s, is a. exotic qua.k obj.ct ra.her tha. a.light helium or ca.bon white dwa.f. The exotic hypothesis na.ura.ly expla.ns some of the observed fea.ures, a.d provides quite strong predictions for this system, to be confirmed or refuted in fea.ible future studies.

关键词： bina.y pulsa.s -- exotic ma.ter-- pulsa.s: individua. (PSR j.719-1438)

The Deep Thioredoxome in Chla.ydomona. reinha.dtii： New Insights into Redox Regula.ion

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Molecula. Pla.t 2017年第8期10卷 1107-1125页

作者： Ma.ia.Esther perez-perez a.eline Ma.ries a.exa.dre Ma.s Nicola. j. Toura.se Ma.ion Ha.on Stepha.e D. Lema.re Christophe H. Ma.cha.d Institut de Biologie Physico-Chimique UMR8226 CNRS Sorbonne Universit6s UPMC Univ Paris 06 13 rue Pierre et Marie Curie 75005 Paris France Institut de Biologie Physico-Chimique Plateforme de Proteomique FRC550 CNRS 13 rue Pierre et Marie Curie 75005 Paris France Instituto de Bioquimica.Vegeta. y Fotosintesis Consejo Superior de Investigaciones Cientificas (CSIC)-Universidad de Sevilla Seville Spain a.Na.La.ora.ory INSERM U1212 CNRS UMR5320 Universite Bordeaux 2 Bordeaux France

Thiol-ba.ed redox post-tra.sla.iona. modifica.ions ha.e emerged a. importa.t mecha.isms of signa.ing a.d regula.ion in a.l orga.isms, a.d thioredoxin pla.s a.key role by controlling the thiol-disulfide sta.us of ta.get proteins. Recent redox proteomic studies revea.ed hundreds of proteins regula.ed by gluta.hio- nyla.ion a.d nitrosyla.ion in the unicellula. green a.ga.Chla.ydomona. reinha.dtii, while much less is known a.out the thioredoxin intera.tome in this orga.ism. By combining qua.ita.ive a.d qua.tita.ive proteomic a.a.yses, we ha.e comprehensively investiga.ed the Chla.ydomona. thioredoxome a.d 1188 ta.gets ha.e been identified. They pa.ticipa.e in a.wide ra.ge of meta.olic pa.hwa.s a.d cellula. pro- cesses. This study broa.ens not only the redox regula.ion to new enzymes involved in well-known thiore- doxin-regula.ed meta.olic pa.hwa.s but a.so sheds light on cellula. processes for which da.a.supporting redox regula.ion a.e sca.ce （a.oma.ic a.ino a.id biosynthesis, nuclea. tra.sport, etc）. Moreover, we cha.- a.terized 1052 thioredoxin-dependent regula.ory sites a.d showed tha. these da.a.constitute a.va.ua.le resource for future functiona. studies in Chla.ydomona.. By compa.ing this thioredoxome with proteomic da.a.for gluta.hionyla.ion a.d nitrosyla.ion a. the protein a.d cysteine levels, this work confirms the existence of a.complex redox regula.ion network in Chla.ydomona. a.d provides evidence of a.tremendous selectivity of redox post-tra.sla.iona. modifica.ions for specific cysteine residues.

关键词： Chla.ydomona. reinha.dtii disulfide bond isotope-coded a.finity ta. redox proteomics redox regula.ion thioredoxin ta.gets