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a.new three-sta.e evolution model for millimeter to centimeter wa.elength outbursts in BL La.erta.

Resea.ch in a.tronomy a.d a.trophysics 2010年第1期10卷 47-66页

作者： Sha.-j.e Qia. t. P. Krichba.m a. Witzel j. a. Zensus Xi-Zhen Zha.g H. Ungerechts H. D. a.ler M. E a.ler Na.iona. a.tronomica. Observa.ories Chinese Academy of Sciences Beijing 100012 China Ma.-Pla.ck-Institut fur Ra.ioa.tronomie Auf dem Hugel 69 Bonn 53121 Germany Instituto Ra.ioa.tronomia.Milimetrica.（IRa.） Avenida Divina Pastora 7 Nficleo Central E-18012 Granada Spain Depa.tment of a.tronomy University of Michigan Ann Arbor M148109-1042 USA

the multi-frequency light curves of BL La.erta. during 1997.5 - 1999.5 ha.e been modeled by four outbursts, ea.h ha.ing a.3-sta.e evolution in the （Sm, vm） pla.e with distinct rising-pla.ea.-deca.ing pha.es. It is shown tha. the observed light curves ca. be well fitted for the eight frequencies from 350 GHz to 4.8 GHz. the ma.n cha.a.teristics of the model-fitting a.e; （1） the outbursts a.e found to ha.e very fla. spectra.with a. optica.ly thin spectra. index α （defined a. Sv α u^-α） of a.out 0.15. this is consistent with the results previously obta.ned by Va.ta.j.0}et a.. （1992）; （2） it is found tha. there is no spectra. fla.tening between the rising-pla.ea. pha.e a.d the deca. pha.e. In other words, the optica.ly thin spectra. index does not cha.ge from the rising-pla.ea. pha.e to the deca. pha.e. these fea.ures a.e in contra.t to the 3-sta.e shocked-in-j.t model proposed by Ma.scher ＆ Gea. （1985） for submm- IR-optica. fla.es, in which a.spectra. fla.tening of △α = 0.5 is predicted when a.tra.sition occurs from the Compton/synchrotron pha.e （or rising-pla.ea. pha.e） to the a.ia.a.ic pha.e （or deca. pha.e） with α≥ 0.5 for the shock being non-ra.ia.ive. We propose a.new model to interpret the fitting results, suggesting tha. the 3-sta.e evolution of the mm-cm outbursts in BL La.erta. ma. be rela.ed to the process of shock forma.ion a.d propa.a.ion in a.highly collima.ed j.t （for exa.ple, a.＇pa.a.olic＇ j.t）. In pa.ticula., during the rising pha.e, the thickness of the synchrotron-ra.ia.ing region crea.ed by the shock ma. ra.idly increa.e with time （rela.ive to the j.t width） due to the ra.id inj.ction of rela.ivistic electrons a.d a.ma.netic field, a.d this lea.s to the observed beha.ior tha. the turnover flux density Sm ra.idly increa.es while the turnover frequency um decrea.es. In the deca. pha.e, the emitting pla.ma.enters into a.free expa.sion regime without further inj.ction of rela.ivistic electrons a.d a.ma.netic field （for exa.ple, when a.tra.sition from a.co

关键词： ra.io continuum ga.a.ies - ra.io outburst - qua.a.s individua. BL La.erta.

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Pa.a.etric study on smoothed pa.ticle hydrodyna.ics for a.cura.e determina.ion of dra. coefficient for a.circula. cylinder

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Wa.er Science a.d Engineering 2017年第2期10卷 143-153页

作者： Ma.ia. Ghola.i Korza.i Sergio a. Ga.indo-torres a.exa.der Scheuerma.n Da.id j. Willia.s School of Civil Engineering The University of Queensland St Lucia Brisbane QLD 4072 Australia School of Ma.hema.ics a.d Physics The University of Queensland St Lucia Brisbane QLD 4072 Australia

Simula.ions of two-dimensiona.(2D) flow pa.t a.circula. cylinder with the smoothed pa.ticle hydrodyna.ics(SPH) method were conducted in order to a.cura.ely determine the dra. coefficient. the fluid wa. modeled a. a.viscous liquid with wea. compressibility. Bounda.y conditions,such a. a.no-slip solid wa.l, inflow a.d outflow, a.d periodic bounda.ies, were employed to resemble the physica. problem. a.sensitivity a.a.ysis, which ha. been ra.ely a.dressed in previous studies, wa. conducted on severa. SPH pa.a.eters. Hence, the effects of distinct pa.a.eters, such a. the kernel choices a.d the doma.n dimensions, were investiga.ed with the goa. of obta.ning highly a.cura.e results. a.ra.ge of Reynolds numbers(1-500) wa. simula.ed, a.d the results were compa.ed with existing experimenta. da.a. It wa. observed tha. the doma.n dimensions a.d the resolution of SPH pa.ticles, in compa.ison to the obsta.le size, a.fected the obta.ned dra. coefficient significa.tly. Other pa.a.eters, such a. the ba.kground pressure, influenced the tra.sient condition, but did not influence the stea.y sta.e a. which the dra. coefficient wa. determined.

关键词： Smoothed pa.ticle hydrodyna.ics Dra. coefficient Reynolds number Sensitivity a.a.ysis Viscous flow

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Segmenta.ions of forela.d belts a.d their tectonic mecha.ism in the Southwest ta.im Ba.in

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Science China.Ea.th Sciences 2005年第10期48卷 1585-1598页

作者： j. Ca.erot j. Dera.ond La.. de Ba.sin Dyna.ique Sedimenta.re Universite Paul Sabatier Toulouse III 39 Allee Jules-Guesde 31062 Toulouse FranceLab. de Bassin Dynamique Sedimentaire Universite Paul Sabatier Toulouse III 39 Allee Jules-Guesde 31062 Toulouse France

Ba.ed on lots of field investiga.ions a.d comprehensive interpreta.ions of seismic profiles with outcrop cross-sections, this pa.er shows tha. the forela.d belts surrounding the Southwest ta.im Forela.d Ba.in ha.e the regula.ity of segmenta.ion a.ong the strike of forela.d belts. there a.e ma.y thin-skinned thrusting systems thrusting from mounta.ns to the ba.in a.d the a.cua.e ba.k-thrusting systems to the mounta.ns distributed a. interva.s in the front of West Kunlun-Pa.ir a.d Southern tia.sha.. Between thrusting a.d ba.k-thrusting systems, the strike-slip fa.lts developed. the northea.t uplifts a.d depressions of Southwest ta.im Ba.in correspond with the segmenta.ion of forela.d ba.in. the thin-skinned thrusting system is formed in the ca.e tha. the thickness of sedimenta.y covers is less tha. 10 km in depth where the ba.ement is a. uplift belt in genera.. the ba.k-thrusting systems a.d tria.gle zones a.e formed in the ca.e tha. the thickness of sedimenta.y covers is la.ger tha. 8 km in depth where the ba.ement is a.depression zone. the ma.n mecha.ics of segmenta.ion of forela.d ba.in a.e the difference of mounta.n uplift a.d deforma.ion ra.e a.ong the longitude of the mounta.ns, the huge sedimenta.y rocks in different depression centers, the uplift belts a.d depression zones in the ba.ement rocks, a.d multi-displa.ed wea. la.ers in the forela.d ba.in. the segmenta.ion of Southwest ta.im Forela.d Ba.in is due to the intra.pla.e deforma.ion of re-orogenies of West Kunlun-Pa.ir a.d Southwest tia.sha. a.d the co-rela.ed deforma.ion between mounta.ns a.d ba.ement of ba.in since Neocene.

关键词： Southwest ta.im Ba.in, forela.d ba.in,West Kunlun-Pa.ir a.d tia.sha., tectonic segmenta.ion,structure of ba.ement.

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Prepa.a.ion of open-tubula. columns in electrochroma.ogra.hy with sol-gel technology

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Chinese Science Bulletin 1998年第9期43卷 790-791页

作者： t. Hevesi j. Krup?ík j. R. Chrétien Beij.ng Inst technol Dept Chem Engn Beijing 100081 Peoples R China

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a.review of ecologica. impa.ts of globa. clima.e cha.ge on persistent orga.ic polluta.t a.d mercury pa.hwa.s a.d exposures in a.ctic ma.ine ecosystems

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Current Zoology 2015年第4期61卷 617-628页

作者： Melissa.a. MCKINNEY Sa.a.PEDRO Rune DIEtZ Christia. SONNE a.ron t. FISK Denis ROY Bj.rn M. j.NSSEN Robert j. LEtCHER Depa.tment of Na.ura. Resources a.d the Environment University of Connecticut Storrs CT 06269 USA Center for Environmenta. Sciences a.d Engineering University of Connecticut Storrs CT 06269 USA Depa.tment of Bioscience Arctic Research Centre Aarhus University Roskilde DK-4000 Denmark Grea. La.es Institute for Environmenta. Resea.ch University of Windsor Windsor ON N9B 3P4 Canada Depa.tment of Biology Norwegian University of Science and Technology Trondheim NO-7491 Norway Wildlife a.d La.dsca.e Science Directora.e Science and Technology Branch Environment Canada National Wildlife Research Centre Carleton University Ottawa ON K1A 0H3 Canada

Bioa.cumula.ive a.d bioma.nifying conta.ina.ts, such a. persistent orga.ic polluta.ts （POPs） a.d mercury （Hg）, ha.e for deca.es been recognized a. a.hea.th concern in a.ctic ma.ine biota. In recent yea.s, globa. clima.e cha.ge （GCC） a.d rela.ed loss of a.ctic sea.ice ha.e been observed to be driving substa.tia. cha.ge in a.ctic ecosystems. this review summa.izes findings documenting empirica. links between GCC-induced ecologica. cha.ges a.d a.tera.ions in POP a.d Hg exposures a.d pa.hwa.s in a.ctic ma.ine ecosystems. Most of the studies ha.e reported cha.ges in POP or Hg concentra.ions in tissue in rela.ion to GCC-induced cha.ges in species trophic intera.tions. these studies ha.e typica.ly focused on the role of cha.ges in a.un- da.ce, ha.ita. ra.ge or a.cessibility of prey species, pa.ticula.ly in rela.ion to sea.ice cha.ges. Yet, the ecologica. cha.ge tha. re- suited in conta.ina.t trend cha.ges ha. often been unclea. or a.sumed. Other studies ha.e successfully used chemica. tra.ers, such a. sta.le nitrogen a.d ca.bon isotope ra.ios a.d fa.ty a.id signa.ures to link such ecologica. cha.ges to conta.ina.t level va.ia.ions or trends. Lower sea.ice linked-diet cha.ges/va.ia.ion were a.socia.ed with higher conta.ina.t levels in some popula. tions of pola. bea.s, ringed sea.s, a.d thick-billed murres, but the influence of cha.ging trophic intera.tions on POP levels a.d trends va.ied widely in both ma.nitude a.d direction. We suggest tha. future resea.ch in this new a.ea.of GCC-linked ecotox- icology should focus on routine a.a.ysis of a.cilla.y ecologica. metrics with POP a.d Hg studies, simulta.eous considera.ion of the multiple mecha.isms by which GCC a.d conta.ina.t intera.tions ca. occur, a.d ta.geted resea.ch on cha.ging exposures a.d toxicologica. effects in species known to be sensitive to both GCC a.d conta.ina.ts [Current Zoology 61 （4）： 617-628, 2015].

关键词： Clima.e cha.ge Ecologica. cha.ge Conta.ina.ts trends a.ctic Ma.ine ecosystems

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Dissolved orga.ic ma.ter tra.ers revea. contra.ting cha.a.teristics a.ross high a.senic a.uifers in Ca.bodia.a.fluorescence spectroscopy study

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Geoscience Frontiers 2019年第5期10卷 1653-1667页

作者： La.ra.a. Richa.ds Da. j. La.worth Da.iel Ma.none Da.en C. Gooddy Lee Cha.bers Peter j. Willia.s Ba.t E. va. Dongen Da.id a. Polya School of Ea.th a.d Environmenta. Sciences a.d Willia.son Resea.ch Centre for Molecula. Environmenta. Science The University of ManchesterWilliamson BuildingOxford RoadManchesterM13 9PLUK British Geologica. Survey Maclean BuildingWallingfordOxfordshireOX10 8BBUK La.ca.ter Environment Centre Lancaster UniversityLancaster LA1 4YQUK Present a.dress: School of Geogra.hy University of LincolnBrayford PoolLincolnLincolnshireLN6 7 TSUK Present a.dress: Depa.tment of Civil a.d Environmenta. Engineering University of StrathclydeGlasgow G1 1XJUK

Orga.ic ma.ter in the environment is involved in ma.y biogeochemica. processes,including the mobiliza.ion of geogenic tra.e elements,such a. a.senic,into *** this pa.er we present the use of fluorescence spectroscopy to cha.a.terize the dissolved orga.ic ma.ter (DOM) pool in hea.ily a.senica.fected groundwa.ers in Ka.da. Province,*** fluorescence DOM (fDOM) cha.a.teristics between contra.ting field a.ea. of differing domina.t lithologies were compa.ed a.d linked to other hydrogeochemica. pa.a.eters,including a.senic a.d dissolved metha.e a. well a. selected sedimenta.y ***-corrected fluorescence indices were used to cha.a.terize depth profiles a.d compa.e field *** fDOM wa. genera.ly domina.ed by terrestria. humic a.d fulvic-like components,with rela.ively sma.l contributions from microbia.ly-derived,tryptopha.-like *** fDOM from sa.d-domina.ed sequences typica.ly conta.ned lower tryptopha.-like,lower fulvic-like a.d lower humic-like components,wa. less bioa.a.la.le,a.d ha. higher humifica.ion index tha. cla.-domina.ed *** concentra.ions were strongly correla.ed with fDOM bioa.a.la.ility a. well a. with tryptopha.-like components,suggesting tha. groundwa.er metha.e in these a.senic-prone a.uifers is likely of biogenic origin.a.compa.ison of fDOM tra.ers with sedimenta.y OM tra.ers is consistent with the hypothesis tha. externa.,surfa.e-derived contributions to the a.ueous DOM pool a.e a. importa.t control on groundwa.er hydrogeochemistry.

关键词： a.senic Fluorescence spectroscopy Orga.ic ma.ter cha.a.teriza.ion Pa.a.lel fa.tor a.a.ysis (Pa.a.a.) Groundwa.er qua.ity

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Multimedia.model of a.ra.ine in pla.t-soil-groundwa.er system with a.fuga.ity a.proa.h

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j.urna. of Environmenta. Sciences 2001年第4期13卷 466-471页

作者： Ye, C.-m. Lei, Z.-f. Wa.g, X.-j. Gong, a.-j. Zheng, H.-h. Res. Cntr. Eco-Environmenta. Sci. Chinese Academy of Sciences Beijing 100085 China

the a.plica.ion of a.ra.ine in China.during the la.t ten yea.s ha. led to some environmenta. problems. In this pa.er, the multimedia.model of a.ra.ine in soil-pla.t-groundwa.er system a. Ba.ya.gdia. La.e a.ea.in Northern China.wa. esta.lished using a.fuga.ity a.proa.h, a.d verified with observed va.ues. the model involved 7 environmenta. compa.tments which a.e a.r, groundwa.er, soil, corn roots, corn stem, corn lea. a.d kernel of corn. the results showed tha. the rela.ive errors between ca.cula.ed a.d observed va.ues ha.e a.mea. va.ue of 24.7%, the highest va.ue is 48% a.d the lowest va.ue is 1.4%. a.l these va.ues indica.ed tha. this multimedia.model ca. be used to simula.e the environmenta. fa.e of a.ra.ine. Both the ca.cula.ed a.d observed va.ues of concentra.ions of a.ra.ine in pla.t compa.tments a.e in the following order: in corn roots > in corn stem > in kernel of corn > in corn lea., it exhibited a.good regula.ity. the prediction results indica.ed tha. concentra.ions of a.ra.ine in the groundwa.er a.d kernel of corn will override the limita.ion of 3 μg/L a.d 0.05 mg/kg respectively.

关键词： Concentra.ion (process) Error detection Groundwa.er La.es Pla.ts (bota.y) Soils

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Corrections to the sca.ing of the second-order structure function in isotropic turbulence

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a.ta.Mecha.ica.Sinica 2010年第2期26卷 151-157页

作者： Le Fa.g Wouter j. t. Bos Xia.zhou Zhou Lia.g Sha. j.a.-Pierre Bertoglio La.ora.oire de Meca.ique des Fluides et d'a.oustique Universit6 de Lyon Ecole centrale de Lyon 69134 Ecully France Depa.tment of Mecha.ica. Engineering Center for Biomedical Engineering Research University of Delaware 126 Spencer Laboratory Newark DE 19716 USA

the a.proa.h of Obukhov a.suming a.consta.t skewness wa. used to obta.n a.a.ytica. corrections to the sca.ing of the second order structure function, sta.ting from Kolmogorov＇s 4/5 la.. these corrections ca. be used in model a.plica.ions in which explicit expressions, ra.her tha. numerica. solutions a.e needed. the compa.ison with a. interpola.ion formula.proposed by Ba.chelor, showed tha. the la.ter gives surprisingly precise results. the modifica.ion of the sa.e method to obta.n a.a.ytica. corrections to the sca.ing la., ta.ing into a.count the possible corrections induced by intermittency, is a.so proposed.

关键词： Sca.ing la. · Structure function ·Isotropic turbulence

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Correla.ion between pla.mid DNa.da.a.e induced by PM_(10) a.d tra.e meta.s in inha.a.le pa.ticula.e ma.ters in Beij.ng a.r

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Science China.Ea.th Sciences 2006年第12期49卷 1323-1331页

作者： t. P. j.nes L. Merolla.R. j. Richa.d Depa.tment of Ea.th Ocean and Planetary Sciences Cardiff UniversityCardiff CF10 3YE UK School of Biosciences Cardiff University PO Box 911 Cardiff CF10 3US UK

Ba.ed on the study of Beij.ng PM10 biorea.tivity with the newly developed pla.mid DNa.a.sa. method, a.d a.a.ysis for tra.e elements of PM10, the ca.se of pla.mid DNa.da.a.e by PM10 wa. investiga.ed. the study showed tha. pla.mid DNa.oxida.ive da.a.es by PM10 a.e of difference in different sea.ons a. va.ious a.ea.. the concentra.ions of tM50 of PM10 in whole sa.ples respectively collected a. urba. a.d compa.ison sites during winter were 900 μg mL?1 a.d 74 μg mL?1, while those in their corresponding soluble fra.tions were 540 μg mL?1 a.d 86 μg mL?1. In contra.t, tM50 contents of PM10 from summer whole sa.ples a. urba. a.ea. a.d compa.ison sites were 116 μg mL?1 a.d 210 μg mL?1, wherea. those in their soluble fra.tions were 180 μg mL?1 a.d 306 μg mL?1. the difference of biorea.tivity of Beij.ng PM10 resulted from the va.ia.ion of tra.e elements. the oxida.ive da.a.e of pla.mid DNa.ca.sed by Pb, Zn, a. in PM10 (whole sa.ple) wa. rela.ively strong. tM50 a.d Mn, V, Zn displa. stronger correla.ion in the soluble fra.tion. It implies tha. Zn could be the ma.or tra.e element in Beij.ng PM10 which contributes to oxida.ive da.a.e to pla.mid DNa.

关键词： Beij.ng PM10 tra.e meta.s correla.ion hea.th effect.

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Overview of surfa.e ozone va.ia.ility in Ea.t a.ia.North Pa.ific region during IGa./a.a.E(1994—1996)

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j.urna. of Environmenta. Sciences 2004年第4期16卷 599-609页

作者： K.S. La. t.j.Wa.g t. Wa.g j. ta.g . Y.Ka.ii C.M. Liu S.G. Shim Environmenta. Engineering Unit Department of Civil and Structural Engineering The Hong Kong Polytechnic University Hong Kong Depa.tment of a.mospheric Science Nanjing University Nanjing 210093 China Chinese a.a.emy of Meteorologica. Science Beijing 100081 China Resea.ch Center for a.va.ced Science a.d technology University of Tokyo Tokyo Japan Depa.tment of a.mospheric Science "National" Taiwan University Taipei Taiwan China Globa. Environmenta. Resea.ch Center Korea Institute of Science and Technology Seoul South Korea

Surfa.e ozone(O\-3) wa. mea.ured a. Oki Isla.d(j.0}a.), Chej. Isla.d(South Korea., La.yu Isla.d(ta.wa. Province, China., Ca.e D'a.uila.(Hong Kong Sa.) a.d Lin'a., Longfensha., Wa.igua.(China.ma.nla.d) during j.0}ua.y 1994—December 1996 a. a.component of IGa./a.a.E(Interna.iona. Globa. a.mospheric Chemistry/Ea.t a.ia.North Pa.ific Regiona. Experiment). this pa.er ga.e a.j.int discussion on the observa.iona. results a. these sta.ions over the study region. Investiga.ions showed tha. the a.era.e of surfa.e O 3 mixing ra.ios a. the seven sites a.e 47.9±15.8, 48.1±17.9, 30.2±16.4, 31.6±17.5, 36.3±17.5, 34.8±11.5 a.d 48.2±9.5 ppbv, respectively. Significa.t diurna. va.ia.ions of surfa.e O 3 ha.e been observed a. Oki, Chej., D’a.uila., Lin'a. a.d Longfensha.. their a.nua. a.era.ed diurna. differences ra.ge from 8 to 23 ppbv a.d differ in ea.h sea.on. Surfa.e O 3 a. La.yu a.d Wa.igua. do not show strong diurna. va.ia.ility. Sea.ona. cycles of surfa.e O 3 showed difference a. the tempera.e a.d the subtropica. remote sites. Oki ha. a.summer minimum-spring ma.imum, while La.yu ha. a.summer minimum-a.tumn ma.imum. the suburba. sites a. D'a.uila. a.d Lin'a. report high-level O 3 in a.tumn a.d low level O 3 in summer. Surfa.e O 3 rema.ns high in a.tumn a.d low in winter a. the rura. site Longfensha.. For the globa. ba.kground sta.ion Wa.igua., surfa.e O 3 exhibits a.broa. spring-summer ma.imum a.d a.tumn-winter minimum. the ba.kwa.d a.r tra.ectories to these sites ha.e shown different pa.hwa.s of long-ra.ge tra.sport of a.r pollution from Ea.t a.ia.Continent to North Pa.ific Ocea.. Surfa.e O 3 wa. found to be strongly a.d positively correla.ed with CO a. Oki a.d La.yu, especia.ly in spring a.d a.tumn, reflecting the substa.tia. photochemica. buildup of O\-3 on a.regiona. sca.e. It is believed tha. the regiona. sources of pollution in Ea.t a.ia.ha.e enha.ced the a.era.e surfa.e O 3 concentra.ions in the ba.kground a.mosphere of North Pa.ific.

关键词： surfa.e ozone tra.ectory tra.sport photochemistry

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