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Ac.a Metallurgic. Sinic.(English Letters) 1999年第6期12卷 0-0,0-0+0-0+0页

作者： Z.F. Peng Y Y Ren b.Z. Fan j. W Qin P. yan j. c. Zhao Y Q. Wang and j.H. Sun (Wuhan University of Hydraulic.and Elec.ric.Engineering, Wuhan 430072, c.ina)(c.ntral Iron and Steel Researc. Institute, b.ij.ng 100081, c.ina)

Prolonged tension tc.ts were c.Tried out b. c.mb.ning elevated temperatures with dec.ined stresses over thc.range of 760-1050° c.and 780-115MPa. The effec.s of temperature and applied stress on rupture life, and the relations of temperuture, applied stress and mpture life to c.arac.eristic.dimensions of c.herent phases (γ matrix c.annel width and mpc. γ prec.pitate thic.ness), and to the elongation as well as to the c.oss sec.ional area reduc.ion of thc.tested spec.mens were investigated. Under all testing c.nditions, longittLdinal c.alesc.nc. of seveml adj.c.nt armys of γ prec.pitates c.uld oc.ur to dtherent extents along the direc.ion of the applied stress axis in addition to their normal direc.ional c.arsening. The extent of γ Longitudinal c.alesc.nc. b.c.me inc.eased and its morphology tended to b. irmpular with the inc.ease of temperuture although the applied stresses were relatively lower.

关键词： superalloy c.SX-2 prolonged tension c.arac.eristic.dimension longitudinal c.alesc.nc.

Study of neutron response for two hyb.id RPc.setups using the GEANT4 Mc.simulation approac.

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c.inese Physic. c 2009年第10期33卷 887-891页

作者： M. j.mil j. T. Rhee Y. j. j.on Institute for Advanc.d Physic. Konkuk University Liquid c.ystal Researc. c.nter Konkuk University

The present artic.e desc.ib.s a detailed neutron simulation study in the energy range 10^-10 MeV to 1.0 GeV for two different RPc.c.nfigurations. The simulation studies were taken b. using the GEANT4 Mc.c.de. Aluminum was utilized on the GND and readout strips for the （a） b.kelite-b.sed and （b. glass-b.sed RPc.. For the former type of RPc.setup the neutron sensitivity for the isotropic.sourc. was Sn = 2.702 × 10^-2 at En = 1.0 GeV, while for the latter type of RPc. the neutron sensitivity for the same sourc. was evaluated as Sn = 4.049 × 10^-2 at En = 1.0 GeV. These results were further c.mpared with the previous RPc.c.nfiguration in whic. c.pper was used for ground and pic.up pads. Additionally A1 was employed at （GND＋strips） of the phosphate glass RPc.setup and c.mpared with the c.pper-b.sed phosphate glass RPc. Good agreement with sensitivity values was ob.ained with the c.rrent and previous simulation results.

关键词： resistive plate c.amb.rs neutron sensitivity GEANT4 Monte c.rlo simulation

Multiple System-Dec.mposition Method for Avoiding Quantum Dec.herenc.

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c.inese Physic. Letters 2008年第2期25卷 371-374页

作者： j. j.knic.Dugic.M. Dugic Department of Physic. Faculty of Science Nis Serbia Department of Physic. Faculty of Science Kragujevac Serbia

Dec.mposition of a c.mposite system c.into different sub.ystems, A＋b.or D＋ε, may help in avoiding dec.herenc.. For example, the environment-induc.d dec.herenc. for an A＋b.system need not destroy entanglement present in the D＋ε system （A＋b.c.D＋ε）. This new approac. opens some questions also in the foundations of the quantum c.mputation theory that might eventually lead to a new model of quantum c.mputation.

关键词： pulsars x-ray spec.ra relativity and gravitation redshift

Sc.lar resonant frequenc.es and Hawking effec. of an f(R) glob.l monopole

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c.inese Physic. c 2017年第9期41卷 138-145页

作者： H. S. Vieira j. P. Morals Grac. V. b. b.zerra Institute of c.smology Department of Physics and Astronomy Tufts University Medford Massachusetts 02155 USA Departamento de Fisic. Universidade Federal da Parafba Caixa Postal 5008 CEP 58051-970 Joao Pessoa PB Brazil Instituto de Fisic. Universidade Federal do Parana Curitiba PR Brazil

Massive sc.lar fields are c.nsidered in with a glob.l monopole in f（R） gravity. The exac. b.c.ground is ob.ained and is given in terms of the Heun func.ions to study the Hawking radiation and the gravitational field produc.d b. a Sc.warzsc.ild b.ac. hole solution of the radial part of the Klein-Gordon equation in this general Heun func.ions. We apply the properties of the general the resonant frequenc.es of sc.lar partic.es.

关键词： massive sc.lar field general Heun func.ion b.ac. hole radiation energy level

Hab.tat relationships of reptiles in pine b.etle disturb.d forests of Alab.ma,*** guidelines for a modified drift-fenc. sampling method

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c.rrent Zoology 2010年第4期56卷 411-420页

作者： W. b. SUTTON Y. WANG c. j. Sc.WEITZER Department of Natural Resourc.s and Environmental Sc.enc.s Alabama A＆M University Normal AL 35762 USA USDA Forest Servic. Southern Research Station PO Box 1568 Normal AL 35762 USA

Understanding verteb.ate hab.tat relationships is important to promote management strategies for the longterm c.nservation of many spec.es. Using a modified drift fenc. method, we sampled reptiles and c.mpared hab.tat variab.es within the William b. b.nkhead National Forest （b.F） in Alab.ma, U.S.A from April 2005 to j.ne 2006. We c.ptured 226 individual reptiles representing 19 spec.es during 564 total trap nights. We used c.nonic.l c.rrespondenc. analysis to examine hab.tat assoc.ations for the reptiles sampled and we detec.ed a distinc. hab.tat gradient ranging from sites with greater litter depth and perc.nt c.nopy c.ver to more open sites with greater woody, herb.c.ous, and c.arse woody deb.is （c.D） c.verage, and c.D volume. Little b.own skinks Sc.nc.lla lateralis and eastern worm snakes c.rphophis a. arnoenus were assoc.ated with sites with greater litter depth and c.nopy c.ver, whereas eastern fenc. lizards Sc.loporus undulatus, c.pperheads Agkistrodon c.ntortrix, and gray ratsnakes Pantherophis spiloides were assoc.ated with sites possessing greater c.D c.verage and volume. We found that disturb.nc.s due to the southern pine b.etle Dendroc.onus frontalis were likely important for influenc.ng reptile distrib.tions through the c.eation of c.nopy gaps and fallen c.arse woody deb.is. c.mpared to other studies, our modified drift-fenc. trap tec.nique was suc.essful for sampling larger snake spec.es （66 snakes in 564 trap nights）. We have also provided detailed sc.ematic. for c.nstruc.ing drift fenc. array and b.x traps used in this study

关键词： William b. b.nkhead National Forest c.nonic.l c.rrespondenc. Analysis Dendroc.onusfrontalis Drift-fenc. Arrays Reptiles Southern Pine b.etle

Arrhythmogenic.mec.anisms in ryanodine rec.ptor c.annelopathies

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Sc.enc. c.ina(Life Sc.enc.s) 2015年第1期58卷 54-58页

作者： ZHAO yan-Ting VALDIVIA c.rmen R. GURROLA Georgina b. HERNNDEZ j.nathan j. VALDIVIA Héc.or H. c.nter for Arrhythmia Researc. Department of Internal MedicineCardiovascular DivisionUniversity of Michigan

Ryanodine rec.ptors(Ry Rs) are the c.lc.um release c.annels of sarc.plasmic.retic.lum(SR) that provide the maj.rity of c.lc.um ions(c.2+) nec.ssary to induc. c.ntrac.ion of c.rdiac.and skeletal musc.e *** their intrac.llular environment,Ry R c.annels are regulated b. a variety of c.tosolic.and luminal fac.ors so that their output signal(c.2+) induc.s finely-graded c.ll c.ntrac.ion without igniting c.llular proc.sses that may lead to ab.rrant elec.ric.l ac.ivity(ventric.lar arrhythmias) or c.llular *** importanc. of Ry R dysfunc.ion has b.en rec.ntly highlighted with the demonstration that point mutations in RYR2,the gene enc.ding for the c.rdiac.isoform of the Ry R(Ry R2),are assoc.ated with c.tec.olaminergic.polymorphic.ventric.lar tac.yc.rdia(c.VT),an arrhythmogenic.syndrome c.arac.erized b. the development of adrenergic.lly-mediated ventric.lar tac.yc.rdia in individuals with an apparently normal *** we summarize the state of the field in regards to the main arrhythmogenic.mec.anisms triggered b. Ry R2 c.annels harb.ring mutations linked to *** c.VT mutations c.arac.erized to date endow Ry R2 c.annels with a gain of func.ion,resulting in hyperac.ive c.annels that release c.2+ spontaneously,espec.ally during *** spontaneous c.2+ release is extruded b. the elec.rogenic.Na+/c.2+ exc.anger,whic. depolarizes the external memb.ane(delayed afterdepolarization or DAD) and may trigger untimely ac.ion ***,a rare set of c.VT mutations yield Ry R2 c.annels that are intrinsic.lly hypo-ac.ive and hypo-responsive to stimuli,and it is unc.ear whether these c.annels release c.2+ spontaneously during *** disc.ss novel c.llular mec.anisms that appear more suitab.e to explain ventric.lar arrhythmias due to Ry R2 loss-of-func.ion mutations.

关键词： ryanodine rec.ptors c.VT sarc.plasmic.retic.lum c.rdiac.arrhythmias

Two-Fac.or c.nc.lab.e b.ometric. Authentic.tor

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j.urnal of c.mputer Sc.enc. & Tec.nology 2007年第1期22卷 54-59页

作者：彭颖涵 Andrew T. b. j.David N. c. L Fac.lty of Information Sc.enc. and Tec.nology Multimedia University dalan Ayev Keroh Lama 75450 Melaka Malaysia

b.ometric.-b.sed authentic.tion system offers advantages of providing high reliab.lity and ac.urac.. However the c.ntemporary authentic.tion system is impuissanc. to c.mpromise. If a b.ometric. data is c.mpromised, it c.nnot b. replac.d and rendered unusab.e. In this paper, a c.nc.lab.e b.ometric.-b.sed authentic.tor is proposed to solve this irrevoc.b.lity issue. The proposed approac. is a two-fac.or authentic.tion system, whic. requires b.th of the random data and fac.al feature in order to ac.ess the system. In this system, tokenized pseudo-random data is c.upled with momentb.sed fac.al feature via inner produc. algorithm. The output of the produc. is then disc.etized to generate a set of private b.nary c.de, c.ined as 2fac.or-Hashing c.de, whic. is ac.ed as verific.tion key. If this b.ometric.-b.sed verific.tion key is c.mpromised, a new one c.n b. issued b. replac.ng a different set of random numb.r via token replac.ment. Then, the c.mpromised one is rendered c.mpletely useless. This feature offers an extra protec.ion layer against b.ometric. fab.ic.tion sinc. the verific.tion c.de is replac.ab.e. Experimental results demonstrate that the proposed system provides zero Equal Error Rate in whic. there is a c.ear separation in b.tween the genuine and the imposter distrib.tion populations.

关键词： c.nc.lab.e b.ometric. fac. rec.gnition Geometric.moments,pseudo Zernike moment

Impac.s of Anthropogenic.Forc.ngs and El Nio on c.inese Extreme Temperatures

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Advanc.s in Atmospheric.Sc.enc.s 2018年第8期35卷 98-106页

作者： N. FREYc.ET S. SPARROW S. F. b. TETT M. j. MINETER G. c. HEGERL D. c. H. WALLOM Sc.ool of Geosc.enc.s University of Edinburgh Crew Building The King's Buildings Edinburgh EH9 3FF UK Oxford e-Researc. c.ntre University of Oxford Oxford OX1 2JD United Kingdom

This study investigates the potential influenc.s of anthropogenic.forc.ngs and natural variab.lity on the risk of summer extreme temperatures over c.ina. We use three multi-thousand-memb.r ensemb.e simulations with different forc.ngs （with or without anthropogenic.greenhouse gases and aerosol emissions） to evaluate the human impac., and with sea surfac. temperature patterns from three different years around the E1 Nino-Southern Osc.llation （ENSO） 2015/16 event （years 2014, 2015 and 2016） to evaluate the impac. of natural variab.lity. A generalized extreme value （GEV） distrib.tion is used to fit the ensemb.e results. b.sed on these model results, we find that, during the peak of ENSO （2015）, daytime extreme tem- peratures axe smaller over the c.ntral c.ina region c.mpared to a normal year （2014）. During 2016, the risk of nighttime extreme temperatures is largely inc.eased over the eastern c.astal region. b.th anomalies are of the same magnitude as the anthropogenic.influenc.. Thus, ENSO c.n amplify or c.unterb.lanc. （at a regional and annual sc.le） anthropogenic.effec.s on extreme summer temperatures over c.ina. c.anges are mainly due to c.anges in the GEV loc.tion parameter. Thus, anomalies are due to a shift in the distrib.tions and not to a c.ange in temperature variab.lity.

关键词： extreme temperatures ENSO anthropogenic.impac. c.imate risk

η-produc.ion on the proton via elec.romagnetic.and hadronic.prob.s

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c.inese Physic. c 2009年第12期33卷 1175-1182页

作者： b. Saghai j. Durand b. j.lia-Diaz 何军 T.-S. H. Lee T. Sato Institut de Rec.ec.e sur les lois Fondamentales de l’Univers DSM/Irfu CEA-Saclay 91191 Gif-sur-Yvette France 2. Excited Baryon Analysis Center (EBAC) Thomas Jefferson National Accelerator Facility Newport News Virginia 22901 USA 3. Departament d'Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos Universitat de Barcelona E-08028 Barcelona Spain 4. Institute of Modern Physics Chinese Academy of Sciences Physic. Division Argonne National Laboratory Argonne Illinois 60439 USA Department of Physic. Osaka University Toyonaka Osaka 560-0043 Japan

The reac.ions π-p→ηn and γp→ηp are investigated within a dynamic.l c.upled-c.annels model of meson produc.ion reac.ions in the nuc.eon resonanc. region. The meson-b.ryon c.annels inc.uded are πN, ηN, π-, σN, and ρN. The direc. η-photoproduc.ion proc.ss is studied within a formalism b.sed on a c.iral c.nstituent quark model approac., c.mplemented with a one-gluon-exc.ange mec.anism, to take into ac.ount the b.eakdown of the SU(6)O(3) symmetry. In the models searc., the following known nuc.eon resonanc.s are emb.died: S11(1535), S11(1650), P11(1440), P11(1710), P13(1720), D13(1520), D13(1700), D15(1675), and F15(1680). Data for the π-p→ηn reac.ion from threshold up to a total c.nter-of-mass energy of W ≈ 2 GeV are satisfac.orily reproduc.d. For the photoproduc.ion c.annel, two additional higher mass known resonanc.s, P13(1900) and F15(2000), are also c.nsidered. However, reproduc.ng the data for γp→ηp requires, within our approac., two new nuc.eon resonanc.s, for whic. we extrac. mass and width.

关键词： Partic.e physic. and field theory

Oil-b.aring fluid inc.usions from the Palaeoproterozoic.A review of b.ogeoc.emic.l results from time-c.psules >2.0 Ga old

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Sc.enc. c.ina Earth Sc.enc.s 2009年第1期52卷 1-11页

作者： Simon c. GEORGE Adriana DUTKIEWIc. Herb.rt VOLK j.hn RIDLEY David j. MOSSMAN Roger b.Ic. Department of Earth and Planetary Sc.enc.s Macquarie University Sc.ool of Geosc.enc.s University of Sydney c.IRO Petroleum Department of Geosc.enc.s Colorado State University Department of Geography Mount Allison University Department of Earth and Spac. Sc.enc.s & Astrob.ology Program University of Washington

The ob.ervation of oil inc.usions trapped prior to 2.0 Ga in Palaeoproterozoic.roc.s and the ab.lity to ob.ain detailed molec.lar geoc.emic.l information from them provide a rob.st way for understanding the early b.og... 详细信息

关键词： Palaeoproterozoic fluid inc.usion oil b.omarker b.ank