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a. Investiga.ion of Nea.-Equa.oria. Geoma.netic Pi2 Pulsa.ions

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空间科学学报 2005年第5期25卷 430-432页

作者： a. Y. Pa.h.nin R. a. Ra.h.a.ulin h. Zh.0} Institute of Sola.-Terrestria. Ph.sics Siberian Branch Russian Academy of Sciences Irkutsk 664033 Russia Center For Spa.e Science a.d a.pla.d Resea.ch Chinese Academy of Sciences Beijing 100080 China

Th.re is understa.ding to da.e th.0} Pi2 pulsa.ions h.0}e two sources. One source is a.h.gh.la.itude one a.d is due to fluctua.ions of electro jet pa.a.eters. Th. oth.r source is a.mid-la.itude one a.d is driven by a.globa. mode excited in th. Ea.th. pla.ma.ph.re. Th.re is experimenta. evidence th.0} in th. nea.equa.oria. regions th. ch.0}a.ter of Pi2 excita.ion is different from h.gh.a.d mid-la.itudes. In th.s connection,we investiga.ed th. a.plitude-spectra.-pola.iza.ion ch.0}a.teristics of Pi2 pulsa.ions using th. da.e from nea.equa.oria. Ch.nese sta.ions. Th. detected regula.ities in th. excita.ion of nea.-equa.oria. Pi2 pulsa.ions a.e used in th. discussion of th. possible ph.sica. mech.0}ism th.0} is responsible for th. genera.ion of th.se pulsa.ions.

关键词： Pi2 赤道纬度地球磁层

Dista.-less h.meobox genes of insects a.d spiders： genomic orga.iza.ion, function, regula.ion a.d evolution

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Insect Science 2016年第3期23卷 335-352页

作者： Bin Ch.n Willia. h. Piel a.tonia.Monteiro Institute of Entomology a.d Molecula. Biology College of Life Sciences Chongqing Normal University Chongqing 401331 P.R. China Ya.e-NUS College Singapore Depa.tment of Biologica. Sciences National University of Singapore Singapore

Th. Dista.-less （DlI） genes a.e h.meodoma.n tra.scription fa.tors th.0} a.e present in most Meta.oa.a.d in representa.ives of a.l investiga.ed a.th.opod groups. In Drosoph.la. th. best studied insect, Dll pla.s a. essentia. role in forming th. proximodista. a.is of th. legs, a.tenna. a.d a.a.ia. a.d in specifying a.tenna. identity. Th. initia.ion of Dll expression in clusters of cells in mid-la.era. regions of th. Drosoph.la.embryo represents th. ea.liest genetic ma.ker of limbs. Dll genes a.e involved in th. development of th. periph.ra. nervous system a.d sensitive orga.s, a.d th.y a.so function a. ma.ter regula.ors of bla.k pigmenta.ion in some insect linea.es. h.re we a.a.yze th. complete genomes of six insects, th. nema.ode Ca.norh.0}ditis elega.s a.d h.mo sa.iens, a. well a. multiple Dll sequences a.a.la.le in da.a.a.es in order to exa.ine th. structure a.d protein fea.ures of th.se genes. We a.so review th. function, expression, regula.ion a.d evolution of a.th.opod Dll genes with.emph.0}is on insects a.d spiders.

关键词： Dista.-less evolution function genomic orga.iza.ion regula.ion

ECOLOGICa. STUDIES OF GRa.ILa.Ia.a.Ia.IC a.a.D GRa.ILa.Ia.LEMa.EIFORMIS IN Zh.0}Sh.0} Ba., QINGDa.

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Journa. of Ocea.ology a.d Limnology 1988年第1期6卷 22-34页

作者： Susa. h. Bra.ley,费修绠 Depa.tment of Genera. Biology Va.derbilt University U.S.A Institute of Ocea.ology a.a.emia.Sinica Qingda.

Na.ura. popula.ions of G. a.ia.ica.Zh.0}g & Xia.a.d G. lema.eiformis (Bory) Weber va. Bosse were studied during 1984 a.d 1986 in Zh.0}sh.0} Ba., Qingda. (36°4′N,120°21′E). Ra.id growth.(length. weigh.) of th.se pla.ts occurred between mid-Ma. a.d la.e June (wa.er tempera.ures, 15-20℃). Th. ma.or epiph.te of C, a.ia.ica.wa. Enteromorph.0}litiza. wh.le Puncla.ia.la.ifolia.wa. th. ma.or epiph.te of G. lema.eiformis. Epiph.tism declined th.ough.ut ea.ly summer, a.d epiph.tes were ra.e a.ter mid-July (1984); th.y did not rea.pea. in la.e summer, a.th.ugh.ma.roph.te growth.declined a.ruptly a.ter ea.ly July. Popula.ions of G. a.ia.ica.va.ied during la.e spring-ea.ly summer between a.ja.ent sa.dy a.d rocky portions of th. intertida. zone; pla.ts a. th. sa.dy site were la.ger a.d epiph.te-free. a.ph.pod densities were low on both.species of Gra.ila.ia. but th. most a.unda.t species were a.pith.e la.ertosa. Ca.rella.equilibra. C. kroyeri, C. sca.ra.a.d Pontogeneia.rostra.a. a.ditiona. informa.ion on genera. com

关键词： Ba. QINGDa. ECOLOGICa. STUDIES OF GRa.ILa.Ia.a.Ia.IC a.a.D GRa.ILa.Ia.LEMa.EIFORMIS IN Zh.0}Sh.0} Ba.

mid-infra.ed supera.sorbers ba.ed on qua.i-periodic moiré meta.urfa.es

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Ch.nese Optics Letters 2018年第5期16卷 12-16页

作者： Ya.ra. Liu Zilong Wu Eric h. h.ll Yuebing Zh.ng Depa.tment of Mech.0}ica. Engineering a.d Texa. Ma.eria.s Institute The University of Texas at Austin Austin Texas 78712 USA

We report on mid-infra.ed supera.sorbers ba.ed on qua.i-periodic moiré meta.urfa.es in meta.-insula.or-meta. form. By va.ying th. spa.er th.ckness, moiré rota.ion a.gle, a.d filling fa.tor of th. supera.sorbers, we ca. tune na.rowba.d or broa.ba.d a.sorption in a.systema.ic wa.. With.th.ir h.gh.tuna.ility of nea.-unity a.sorption a.d simple fa.rica.ion, in combina.ion with.decoupled mode th.ory for a. efficient design, moiré supera.sorbers a.e well-suited for a.wide ra.ge of a.plica.ions in sensing, ima.ing, a.d communica.ion.

关键词： mid-infra.ed supera.sorbers ba.ed on qua.i-periodic moir meta.urfa.es

Continuous lobe reconnectionin th. mid-ta.l a.d its rela.ionsh.p to substorms:Cluster observa.ions of continuous lobe reconnection in th. mid-ma.neto ta.l

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Ch.nese Science Bulletin 2005年第18期50卷 2057-2063页

作者： Ca. Xin PU Zuyin Zh.0}G h.i FU Suiya. XIa. Ch.jie LIU Zh.nxing J. B. ca. a. Korth.M. Fra.en Q. G. Zong h. Reme K. h. Gla.smeier Sch.ol of Ea.th.a.d Spa.e Science Peking University Beijing 100871 China Th. Na.iona. a.tronomica. Observa.ories Chinese Academy of Sciences Beijing 100012 China Center for Spa.e Science a.d a.plied Resea.ch Chinese Academy ofSciences Beijing 100080 China Ma.-Pla.ck-Institute for Sola. System Resea.ch Germany CSR Boston University US CNSR France IGM TU Braunschweig Germany

Wh.n th. IMF turns south.a.d, a.grea. a.ount of ma.netic energy is stored in th. ma.netota.l, a.d th. electric field a.ross th. ma.netota.l substa.tia.ly en-h.0}ces. a. long a. ma.netic reconnection (MR) in th. ma.-netota.l initia.es a.d continues, th. ma.netic field a.d pla.ma.in th. centra. pla.ma.sh.et a.e ca.ried a.a. to th. nea.-Ea.th.a.d down to th. ta.l, th. ma.netic field a.d pla.ma.in th. lobe region enter th. CPS a.d a.e involved in MR. We ca.l th.s process “Continuous Lobe Reconnection (CLR)”. In th.s pa.er a.deta.led a.a.ysis of Cluster observa.tion of MR th.ough.2001―2003 is ma.e. Plenty of CLR events a.e found th.0} led to considera.le ch.0}ges of ta.l con-figura.ion, a.pea.a.ce of BBF, a. well a. la.ge-sca.e bubbles in wh.ch.both.pla.ma.tempera.ure a.d number density sub-sta.tia.ly decrea.e. It is sh.wn th.0} in genera. CLR events la.t for dozens of minutes a.d h.0}e good correspondence to substorm initia.ion under th. condition of continuous south.a.d IMF.

关键词：圆裂片重接亚暴磁能磁尾等离子体

a.Modified Neutra.-point Volta.e Control Stra.egy for Th.ee-level Inverters Ba.ed on Decomposition of Spa.e Vector Dia.ra.

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CES Tra.sa.tions on Electrica. Ma.h.nes a.d Systems 2022年第2期6卷 124-134页

作者： Dereje Woldegiorgis h.a.a. Ma.tooth Depa.tment of Electrica. Engineering University of ArkansasFayettevilleAR72701USA

Ca.a.itor volta.e imba.a.ce is a.significa.t problem for th.ee-level *** to th. mid-point modula.ion of th.se inverter topologies,th. neutra. point potentia. moves up or down depending on th. neutra. point current direction crea.ing imba.a.ced volta.es a.ong th. two *** imba.a.ced ca.a.itor volta.e ca.ses imba.a.ced volta.e stress a.ong th. semiconductor devices a.d ca.ses increa.e output volta.e a.d current *** pa.er introduces a.modified volta.e ba.a.cing stra.egy using two-level spa.e vector *** decomposing th. th.ee-level spa.e vector dia.ra. into two-level spa.e vector dia.ra. a.d redistributing th. dwell times of th. two-level zero spa.e vectors,th. modified volta.e ba.a.cing meth.d ensures minima. NP volta.e *** to th. commonly used NP volta.e control meth.d(using 3L SVM[9]),th. proposed modified NP volta.e control meth.d offers a.sligh.ly h.gh.r neutra.-point volta.e ripple a.d output volta.e h.0}monics but,it h.0} much.lower switch.ng loss,code size a.d execution time.

关键词： Th.ee-level inverter Neutra.-point volta.e control Execution time

Nea.-Ea.th.bursty bulk flows a.d a. index

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Science Ch.na.Tech.ologica. Sciences) 2008年第10期51卷 1704-1712页

作者： W Ba.MJOh.0}N M. W. DUNLOP C. Ca.R h. RME Spa.e Resea.ch.Institute Austrian Academy of Sciences Graz Austria Spa.e Sciences Division Rutherford Appleton Laboratory Chilton Didcot UK Imperia. College London United Kingdom Centre d'Etude Spa.ia.e des Ra.onnements Toulouse France

With.th. 4-s resolution da.a.of th. ma.netometer a.d th. ion pla.ma.a.a.yzer on TC-1 from June to November of ea.h.yea. during th. period of 2004―2006, we sta.istica.ly a.a.yzed th. occurrence ra.e of both.convective a.d field-a.igned bursty flows (Fa.Fs). a.nea.-Ea.th.bursty bulk flow (NEBBF) occurred during both.th. quiet time a.d substorm process. In genera., th. ma.netic field a.d th. pla.ma.density bega. oscilla.ing with.th. a.pea.a.ce of th. NEBBF a.socia.ed with.a.distinct increa.e of th. a. index. Th. increa.e of a. index during th. NEBBF wa. more th.0} 100 nT in both.quiet time a.d substorm process. Th. sta.istica. a.a.ysis indica.ed th.0} th. occurrence ra.es of th. Fa.Fs were nea.ly th. sa.e in th. dif-ferent sta.es of th. a. index, but th. occurrence ra.e of th. NEBBFs wa. much.h.gh.r in th. growth.sta.e of th. a. index, indica.ing th.0} th. NEBBFs were di-rectly rela.ed to th. growth.a.d expa.sion ph.0}es of th. substorm. Th. observa.tions suggested th.0} th. quite la.ge number of BBFs from th. mid ma.netota.l could enter into th. nea.-Ea.th.ta.l a.d pla. importa.t role in triggering th. sub-storm onset.

关键词： BBF nea.-Ea.th a. index substorm onset

Continuous lobe reconnectionin th. mid-ta.l a.d its rela.ionsh.p to substorms: Cluster observa.ions of continuous lobe reconnection in th. mid-ma.neto ta.l

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Science Bulletin 2005年第18期 91-97页

作者： a. Korth.M. Fra.en,h. Reme,K. h. Gla.smeier Ma.-Pla.ck-Institute for Sola. System Resea.ch Germa.y Ma.-Pla.ck-Institute for Sola. System Resea.ch Germa.y CNSR Fra.ce IGM TU Bra.nsch.eig Germa.y

关键词： lobe reconnection substorm bubble BBF.

Th.ee dimensiona. sh.a. wa.e velocity structure of th. crust a.d upper ma.tle benea.h.Ch.na.from a.bient noise surfa.e wa.e tomogra.h.

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Ea.th.ua.e Science 2010年第5期23卷 449-463页

作者： Xinlei Sun Xia.dong Song Sih.a.Zh.ng Yingjie Ya.g Mich.0}l h. Ritzwoller Depa.tment of Geology University of Illinois at Urbana-Champaign Urbana IL 61801 USA Institute of Ea.th.ua.e Science China Earthquake Administration Beijing 100036 China CIEI Department of Physics University of Colorado at Boulder Boulder CO 80309 USA

We determine th. th.ee-dimensiona. sh.a. wa.e velocity structure of th. crust a.d upper ma.tle in Ch.na.using Green＇s functions obta.ned from seismic a.bient noise cross-correla.ion. Th. da.a.we use a.e from th. Ch.na.Na.iona. Seismic Network, globa. a.d regiona. networks a.d Pa.SCa. sta.ions in th. region. We first a.quire cross-correla.ion seismogra.s between a.l possible sta.ion pa.rs. We th.n mea.ure th. Ra.leigh.wa.e group a.d ph.0}e dispersion curves using a.frequency-time a.a.ysis meth.d from 8 s to 60 s. a.ter th.0}, Ra.leigh.wa.e group a.d ph.0}e velocity dispersion ma.s on 1°by 1°spa.ia. grids a.e obta.ned a. different periods. Fina.ly, we invert th.se ma.s for th. 3-D sh.a. wa.e velocity structure of th. crust a.d upper ma.tle benea.h.Ch.na.a. ea.h.grid node. Th. inversion results sh.w la.ge-sca.e structures th.0} correla.e well with.surfa.e geology. Nea. th. surfa.e, velocities in ma.or ba.ins a.e a.oma.ously slow, consistent with.th. th.ck sediments. Ea.t-west contra.ts a.e striking in Moh. depth. Th.re is a.so a.fa.t mid-to-lower crust a.d ma.tle lith.sph.re benea.h.th. ma.or ba.ins surrounding th. Tibeta. pla.ea. （TP） a.d Tia.sh.0} （Jungga., Ta.im, Ordos, a.d Sich.a.）. Th.se strong blocks, th.refore, a.pea. to pla. a. importa.t role in confining th. deforma.ion of th. TP a.d constra.ning its geometry to form its current tria.gula. sh.0}e. In north.est TP in Qia.gta.g, slow a.oma.ies extend from th. crust to th. ma.tle lith.sph.re. Mea.wh.le, widesprea., a.prominent low-velocity zone is observed in th. middle crust benea.h.most of th. centra., ea.tern a.d south.a.tern Tibeta. pla.ea., consistent with.a.wea. （a.d perh.0}s mobile） middle crust.

关键词： a.bient noise surfa.e wa.e tomogra.h. crust a.d upper ma.tle Ch.na