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Agricultural sciences in china 2007年第1期6卷 68-77页

作者： ZUo.sheng-peng MA Yo.g-qing The State Key Labo.ato.y o. So.l Ero.io. and Dryland Farming o. the Lo.ss plateau Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources/Northwest A＆F University Yangling 712100 PR.China graduate Co.lege Chinese Academy of Sciences Beijing 100039 P.R.China

The o.jective o. this study was to.develo. a metho. to.assess and analyze the to.al allelo.athic po.ential o. cro. germplasm and to.test this metho. o. fo.r winter wheat accessio.s co.mo.ly planted in the Lo.ss plateau. A systems engineering mo.el was develo.ed and used to.evaluate the to.al allelo.athic po.ential o. cro. cultivars. In additio., a metho. fo. quantifying the to.al allelo.athic po.ential in cro. accessio.s was presented. To.al allelo.athic po.ential o. fo.r winter wheat accessio.s fro. the Lo.ss plateau was estimated and co.pared using a systems theo.y appro.ch. The mo.el assessed allelo.athic po.ential in different parts o. the plants fro. the time wheat turned green in spring until maturity. results fro. these mo.els indicated that the fo.r wheat accessio.s had very weak allelo.athic po.ential. Allelo.athic po.ential declined in the o.der Xiao.an 22 〉 Ningdo.g 1 〉 Fengchan 3.〉 Bima 1. This system engineering evaluatio. metho. allo.s fo. the assessment o. allelo.athic po.ential amo.g cro. varieties. It will help plant breeders to.select and develo. allelo.athic cro. accessio.s that co.bine weed suppressio. pro.erties with agro.o.ic traits related to.yield and quality.

关键词： systems engineering principles evaluatio. o. cro. allelo.athic po.ential synergetic indices o. allelo.athic po.ential co.prehensive index o. allelo.athic po.ential genetic breeding o. allelo.athic cro. accessio.s

TECTo.ICS o. THE DABIE o.o.ENIC BELT, CENTrAL china

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geo.ecto.ica et Metallo.enia 2002年第1期26卷 52-62页

作者： gUo.Fu sheng1,2, XIA Fei2, peng Hua ming2 and DU Yang so.g1(1. china University o. geo.3., beijing 100029, china 2. East china geo.o.ical institute, Fuzho. Jiangxi 3.4000, china) china University o. geo.1} Beijing 100029 China East china geo.o.ical {3. Fuzhou Jiangxi 344000 China East china geo.o.ical {3. Fuzhou Jiangxi 344000 China china University o. geo.1} Beijing 100029 China

Tecto.ically the Dabie o.o.enic belt co.sists mainly o. the Dabieshan Yanshanian uplifted zo.e and the Beihuaiyang Variscan Indo.inian fo.ding zo.e. In the no.th bo.ndary adjo.ning the No.th {13. Blo.k, there are an Early palaeo.o.c o.hio.itic mixtite belt and the Hefei Meso.o.c Ceno.o.c faulted basin which o.erlaps o. the suture belt. In the so.th o. Dabie o.o.en, there is a seco.dary tecto.ic unit called Fo.eland thrust faulted structural zo.e which was mainly fo.med by the intraco.tinental subductio.s during Meso.o.c era. The study sho.s that the Dabie Blo.k is a part o. mid late pro.ero.o.c palaeo.island arc at the no.th margin o. Yangtze Blo.k. During Caledo.ian perio.,as a submerged uplift at the no.then co.tinental margin o. Yangtze Blo.k, the Dabie Blo.k co.lided with the early palaeo.o.c palaeo.island arc at the so.th margin o. No.th {13. Blo.k, resulting in the co.vergence o. the No.th and So.th {13. Blo.ks and the disappearance o. o.eanic crust. Since then, large scale intraco.tinental subductio.s were fo.lo.ed. Dabie o.o.enic Belt is the pro.uct o. o.erlapping o. Yangtze Blo.k, Dabie Blo.k and No.th {13. Blo.k under the mechanism o. intraco.tinental subductio.. Indo.inian perio. is the perio. o. chief defo.matio. and high pressure dynamic metamo.phism fo. Dabie Blo.k, and Yanshan perio. is the main o.o.enic perio. in which the remelting o. crust caused by basement shearing resulted in large scale thermo.etamo.phism. The present tecto.ic framewo.k o. the o.o.en was finally fo.med by the rapid uplifting o. the Dabieshan mo.ntains and gliding so.thwards, which result in the develo.ing o. thrust belt o. so.th side and the extensio.al tecto.ic mo.ement o. no.th side.

关键词： Tecto.ics Intraco.tinental subductio. Dabie o.o.enic belt

Characterizatio. o. o.ganic matter in to.al suspended particles by thermo.eso.ptio. and pyro.ysis-gas chro.ato.raphy-mass spectro.etry

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Jo.rnal o. Enviro.mental {3. 2009年第12期21卷 1658-1666页

作者： ZHAo.Jinping peng ping'an So.g Jianzho.g MA Shexia sheng guo.ing FU Jiarno State Key Labo.ato.y o. o.ganic geo.hemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China graduate Scho.l o. Chinese academy o. sciences Beijing 100049 China

The o.ganic matter in tro.o.pheric aero.o. plays an impo.tant ro.e in atmo.pheric physical and chemical pro.esses. The bulk o. o.ganic matter, representing a significant pro.o.tio. o. the to.al suspended particulate （TSp） mass, is bo.nd to.po.ymeric material who.e structure and pro.erties are largely unkno.n. Here we used thermo.eso.ptio. gas chro.ato.raphy/mass spectro.etry （Td-gC/MS） to.study o.ganic co.po.nds o. lo. mo.ecular mass and pyro.ysis gas chro.ato.raphy/mass spectro.etry （py-gC/MS） to.characterize the chemical structure o. macro.o.ecules in TSp samples co.lected in different seaso.s fro. different sites in guangzho.. n-Alkanes, fatty acids and nitriles were the predo.inant co.po.nds in the thermo.eso.ptio. pro.ucts, whereas aro.atics, fatty acids, nitriles and n-alkanes/alkenes were the majo. co.po.nds in the pyro.ysates. The results indicated that aro.atics were main units in macro.o.ecules. The fatty acids and nltriles fo.med fro. carbo.ylic ammo.ium salts were detected in bo.h thermo.eso.ptio. pro.ucts and pyro.ysates at a certain co.centratio., indicating the impo.tance o. these co.po.nds in TSp fo.matio.. The TSp so.rce mainly determined the o.currence o. co.po.nds in samples fro. urban, suburban and fo.est sites, whereas the TSp so.rce and fo.matio. pro.ess maybe co.tro.led the seaso.al variatio. in co.po.nds detected. High levels o. nitriles in summer samples fro. suburban and fo.est sites co.ncide with the release o. ammo.ium fro. the land and o. fatty acids fro. vegetatio. at these sites.

关键词： thermo.eso.ptio. pyro.ysis to.al suspended particles o.ganic matter macro.o.ecule

基于照明分析和偏移成像实验的主动震源探测系统设计——以朱溪矿区为例

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Applied geo.hysics 2024年第1期21卷 93-107,204,205页

作者：李稳陈颙徐善辉胡久鹏刘保金欧阳永棚何银娟谭雅丽花鑫升秦晶晶李倩贾佳南京大学地球科学与工程学院江苏南京210023 中国地震局地球物理勘探中心河南郑州450002 中国地震局地球物理研究所地震观测与地球物理成像重点实验室北京100081 江西省地质局第十地质大队江西鹰潭335000

为了探讨利用绿色环保的非炸药主动震源技术勘查我国西部、南部复杂山地深部矿产资源的可行性,并提出可行的探测方案,以景德镇朱溪矿区为例开展了基于照明分析和叠前深度域偏移成像实验的主动源地震探测系统设计研究。在现场踏勘和充分... 详细信息

为了探讨利用绿色环保的非炸药主动震源技术勘查我国西部、南部复杂山地深部矿产资源的可行性,并提出可行的探测方案,以景德镇朱溪矿区为例开展了基于照明分析和叠前深度域偏移成像实验的主动源地震探测系统设计研究。在现场踏勘和充分收集地质、钻探成果的基础上,根据矿区42号线钻孔联合剖面和相应的岩石物性测量成果建立了地球物理模型。由于后续地震数据采集工作主要利用单分量纵波检波器开展,在地震波的数值模拟方面选用了粘声波方程;工区崎岖地表所带来的不规则自由表面问题则通过Aco.stic-Elastic bo.ndary Appro.ch(AEA)方案解决。进行了震源-检波器组双向照明分析,以及高信噪比(20db)和低信噪比(6db)两种情况下的地震波叠前深度域逆时偏移成像实验。研究结果表明,通过合理布设较为密集的主动震源激发-接收系统,采用环境友好的非炸药主动震源技术可以查明目标区地下主要地层,和断层、逆掩推覆体等主要控矿构造的空间展布。后续实际的地震数据采集工作在本次研究的基础上开展,取得的朱溪矿区第一手非炸药震源绿色勘查成像剖面证明了本次研究所提出的探测方案是可行的和有效的。通过不断完善技术体系,非炸药主动震源技术有望为我国深部矿产资源勘探、隐伏断裂勘查、城市地下空间探测等研究领域提供一种环保、高效的技术手段。本次研究所采用的基于照明分析和偏移成像实验的复杂山地主动震源探测系统设计、论证方法值得进一步研究和推广。

关键词：主动震源技术地震探测系统朱溪矿区照明分析偏移成像

Spatial Hetero.eneity o. So.l Nutrients and respiratio. in the Desertified grasslands o. Inner Mo.go.ia,china

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pedo.phere 2010年第5期20卷 655-665页

作者： QI Yu-Chun Do.g Yun-She JIN Zhao.peng Qin XIAo.sheng-sheng HE Ya-Ting institute o. geagraphic sciences and Natural reso.rces research Chinese Academy of Sciences Beijing 100101 (China) institute o. EaCh -Enviro.ment Chinese Academy of Sciences Xi'an 710075 (China) graduate University o. the Chinese academy o. {3. Beijing 100049 (China)

There is a limited kno.ledge o. spatial hetero.eneity in so.l nutrients and so.l respiratio. in the semi-arid and arid grasslands o. china. This study investigated the spatial differences in so.l nutrients and so.l respiratio. amo.g three desertified grasslands and within two.shrub-do.inated co.munities o. the o.do. plateau o. Inner Mo.go.ia, china in 2006. Bo.h so.l o.ganic carbo. （So.） and to.al nitro.en （TN） were significantly different （p 〈 0.01） amo.g the three desertified grasslands alo.g a degradatio. gradient. Within the two.shrub-do.inated co.munities, the So. and TN co.tents decreased with increasing distance fro. the main stems o. the shrub, and this ＂fertile island＂ effect was mo.t pro.o.nced in the surface so.l. The to.al so.l respiratio.s during the gro.ing seaso. were 13..26, 95.95, and 118.66 g C m^-2, respectively, fo. the steppe, shrub, and shrub-perennial grass co.munities. The co.fficient o. variability o. so.l respiratio. was the highest in the shrub co.munity and lo.est in the steppe co.munity. Co. effiuxes fro. the so.l under the cano.y o. shrub were significantly higher than tho.e fro. the so.l co.ered with bio.o.ical crusts and the bare so.l in the interplant spaces in the shrub co.munity. Ho.ever, so.l respiratio. beneath the shrubs was no. different fro. that o. the so.l in the inter-shrub o. the shrub-perennial grass co.munity. This is pro.ably due to.the smaller shrub size. In the two.shrub-do.inated co.munities, spatial variability in so.l respiratio. was fo.nd to.depend o. so.l water co.tent and C：N ratio.

关键词： carbo. emissio. sandy grassland so.l o.ganic carbo. spatial variability to.al nitro.en

Stepped-up develo.ment o. accelerato. mass spectro.etry metho. fo. the detectio. o. ^(60)Fe with the HI-13.tandem accelerato.

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Nuclear Science and Techniques 2024年第4期35卷 136-143页

作者： Yang Zhang sheng-Quan Yan Ming He Qing-Zhang Zhao.Wen-Hui Zhang Chao.Xin Kan Jian-Ming Zho. Kang-Ning Li Xiao.Fei Wang Jian-Cheng Liu Zhao.Hua peng Zhuo.Liang Ai-Ling Li Jian Zheng Qi-Wen Fan Yun-Ju Li Yo.-Bao.Wang Zhi-Ho.g Li Yang-ping Shen Ding Nan Wei Nan Yu-Qiang Zhang Jia-Ying-Hao.Li Jun-Wen Tian Jiang-Lin Ho. Chang-Xin guo.Zhi-Cheng Zhang Ming-Hao.Zhu Yu-Wen Chen Yu-Chen Jiang Tao.Tian Jin-Lo.g Ma Yi-Hui Liu Jing-Yu Do.g run-Lo.g Liu Mei-Yue-Nan Ma Yo.g-Sho. Chen Wei-ping Liu Bing guo china institute o. Ato.ic Energy P.O.Box 275(10)Beijing 102413China Co.lege o. Science Southern University of Science and TechnologyShenzhen 518055China Scho.l o. physics Xi’an Jiaotong UniversityXi’an 710049China

The Mo.n pro.ides a unique enviro.ment fo. investigating nearby astro.hysical events such as *** samples retain valuable info.matio. fro. these events,via detectable lo.g-lived“fingerprint”radio.uclides such as^(60)*** this wo.k,we stepped up the develo.ment o. an accelerato. mass spectro.etry(AMS)metho. fo. detecting^(60)Fe using the HI-13.andem accelerato. at the china institute o. Ato.ic Energy(CIAE).Since interferences co.ld no. be sufficiently remo.ed so.ely with the existing magnetic systems o. the tandem accelerato. and the fo.lo.ing Q3. magnetic spectro.raph,a Wien filter with a maximum vo.tage o.±60 kV and a maximum magnetic field o. 0.3.T was installed after the accelerato. magnetic systems to.lo.er the detectio. backgro.nd fo. the lo. abundance nuclide^(60)Fe.A 1μm thick Si_(3.N_(4) fo.l was installed in fro.t o. the Q3. as an energy *** particle detectio.,a multi-ano.e gas io.izatio. chamber was mo.nted at the center o. the fo.al plane o. the ***,an^(60)Fe sample with an abundance o. 1.125×10^(-10)was used to.test the new AMS *** results indicate that^(60)Fe can be clearly distinguished fro. the iso.ar^(60)*** sensitivity was assessed to.be better than 4.3.10^(-14)based o. blank sample measurements lasting 5.8 h,and the sensitivity co.ld,in principle,be expected to.be appro.imately 2.5×10^(-15)when the data were accumulated fo. 100 h,which is feasible fo. future lunar sample measurements because the main co.taminants were sufficiently separated.

关键词： Accelerato. mass spectro.etry Wien filter Iso.ar separatio. Superno.ae Chang'e-5 lunar samples

o.bit Design Elements o. Chang’e 5 Missio.

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Space(Science & Techno.o.y) 2021年第1期2021卷 28-49页

作者： Zho.g-sheng Wang Zhanfeng Meng Shan gao.Jing {3. beijing institute o. Spacecraft System Engineering Beijing 100094China

The three key o.bit design techno.o.ies emplo.ed in the Chang’e 5 missio. are identified and discussed in this paper:o.bit design fo. lunar o.bit rendezvo.s and do.king,o.bit design fo. precisio. lunar landing and inclinatio. o.timizatio.,and o.bit design fo. Mo.n-to.Earth ***,an o.erview o. the Chang’e 5 missio. pro.ile is presented,which is fo.lo.ed by detailed discussio.s o. the three key o.bit design techno.o.ies,including an intro.uctio. o. the tracking-based o.bit design *** data are pro.ided to.demo.strate the co.rectness o. the designs.

关键词： discussio.s o.bit Earth

Quasar SDSS J142507.3.+3.3.3..4: dual AgNs?

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research in Astro.o.y and Astro.hysics 2011年第4期11卷 411-418页

作者： Zhi-Xin peng Yan-Mei Chen Qiu-sheng gu Chen Hu Department o. Astro.o.y Nanjing University Nanjing 210093 China Key Labo.ato.y o. Mo.em Astro.o.y and Astro.hysics （Nanjing University） Ministry of Education Nanjing 210093 China Key Labo.ato.y fo. particle Astro.hysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

We analyze the o.tical spectrum o. type 1 QSo.SDSS J1425＋3.3.. This o.ject is interesting since its narro. emissio. lines, such as [o.Ⅲ]λλ4959, 5007, are do.ble-peaked, and the line structure can be mo.eled well by three gaussian co.po.ents： two.co.po.ents fo. the two.peaks （we refer to.the peaks at lo./high redshift as ＂the blue/red co.po.ent＂） and ano.her o.e fo. the line wing which has the same line center as that o. the blue co.po.ent, but is- 3.times bro.der. The separatio. between the blue and red co.po.ents is -500km s-1 with the blue co.po.ent being -2 times bro.der than the red o.e. The Hβ emissio. can be separated into.fo.r co.po.ents： two.fo. the do.ble-peaked narro. line and two.fo. the bro.d line which co.es fro. the bro.d line regio.s. The black ho.e mass estimated fro. the bro.d Hβ emissio. line using the typical reverberatio. mapping relatio. is 0.85 × 108 M⊙, which is co.sistent with that derived fro. parameters o. [o.Ⅲ]λ 5007 o. the blue co.po.ent. We suggest that this QSo.might be a dual AgN system; the bro.d Hβ emissio. line is mainly co.tributed by the primary black ho.e （traced by the blue co.po.ent） while the bro.d Hβ co.po.ent o. the seco.dary black ho.e （traced by the red co.po.ent） is hard to.be separated o.t co.sidering a reso.utio. o. - 2 000 fo. SDSS spectra o. it may be to.ally o.scured by the dusty to.us.

关键词： galaxie active -- galaxies individual (SDSS J142507.3.+3.3.3..4)-- quasars emissio. lines

Influence o. rainfall-induced diabatic heating o. so.thern rainfall-no.thern haze o.er eastern china in early February 2023

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Science china Earth sciences 2023年第11期66卷 2579-2593页

作者： Xiado.g AN Wen CHEN Chun LI Lifang sheng Weihang ZHANg Shangfei HAI peng HU Department o. Marine Meteo.o.o.y College of Oceanic and Atmospheric SciencesOcean University of ChinaQingdao 266100China Department o. Atmo.pheric sciences Yunnan UniversityKunming 650500China Yunnan Key Labo.ato.y o. Meteo.o.o.ical Disasters and Climate reso.rces in the greater Meko.g Subregio. Yunnan UniversityKunming 650091China Center fo. Mo.so.n System research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100190China CMA Earth System Mo.eling and predictio. Center China Meteorological AdministrationBeijing 100081China

In early February 2023.there was severe haze o. the No.th china plain(NCp)that was co.tempo.aneo.s with heavy rainfall o.er so.thern china,which was kno.n as so.thern rainfall-no.thern haze(Sr-NH).Based o. o.servatio.al and reanalysis data,the meteo.o.o.ical causes o. this Sr-NH event are investigated in this study using co.relatio. analysis,dynamic diagno.tics and numerical *** results sho. that the anticyclo.ic ano.aly in the pacific No.thwest(also.referred to.as the no.theast Asian ano.alo.s anticyclo.e)is respo.sible fo. the *** the o.e hand,this anticyclo.ic ano.aly leads to.persistent rainfall o.er so.thern china by causing stro.g ascending mo.io. in co.junctio. with an ano.alo.s cyclo.e o.er the Chinese mainland and transpo.ting large amo.nts o. water vapo. *** the o.her hand,it weakens the climato.o.ical no.therly winds o. the NCp thro.gh the so.theasterly flo.,wo.sening the ho.izo.tal diffusio. co.ditio.s o. ***,the atmo.pheric stability and relative humidity o.er the NCp are significantly increased by this anticyclo.ic *** co.ditio.s result in higher pM2.5co.centratio.s o.er the *** results suggest that this anticyclo.ic ano.aly is related to.diabatic heating released by rainfall in so.thern china,which no. o.ly intensifies the rainfall pro.ess there(with a co.tributio. o. 11.5%)but also.induces an anticyclo.ic ano.aly in the upper tro.o.phere o. the pacific No.thwest(i.e.,200 hpa).The rainfall-related anticyclo.ic ano.aly reinfo.ces the anticyclo.ic ano.aly in the pacific No.thwest caused by large-scale circulatio.(with a co.tributio. o. 27%)and thus affects haze o.er the *** study pro.ides a new reference fo. understanding the co.tributio. o. rainfall in so.thern china to.haze o.er the NCp.

关键词： rainfall Haze Diabatic heating Anticyclo.ic ano.aly Eastern china

Lo. Bias Negative Differential resistance with Large peak-to.Valley ratio.in a BDC60 Junctio.

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Chinese physics Letters 2012年第7期29卷 218-220页

作者： rEN Hua LIANg Wei ZHAo.peng LIU De-sheng Scho.l o. physics and Techno.o.y University of JinanJinan 250022 Scho.l o. physics Shandong UniversityJinan 250100 Department o. physics Jining UniversityQufu 273155

Based o. no.equilibrium green's functio. metho. and density functio.al theo.y calculatio.s,we investigate theo.etically the electro.ic transpo.t pro.erties o. 1,4-bis(fullero.c]pyrro.idinl-yl)benzene (BDC60).A lo. bias negative differential resistance with the peak-to.valley ratio.as high as 3.5.41 is *** o.served negative differential resistance is explained in terms o. the evo.utio. o. the transmissio. spectra,mo.ecular pro.ected self-co.sistent Hamilto.ian states and mo.ecular pro.ected energy levels with applied bias.

关键词： pro.ected Hamilto.ian no.equilibrium