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Meteo.o.o.ical o.servatio.s o. Mo.nt Everest in 2005

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Pro.ress in Natural Science:Materials Internatio.al 2007年第7期17卷 828-837页

作者： Xie Aiho.g~(1**) Qin Dahe~1 Ren Jiawen~1 Qin Xiang~1 Xiao.Cunde~(1,2) Ho. Shugui~1 Kang Shichang~(1,3) yang Xingguo.(1,4) Jiang yo.yan~1 (1.Key Labo.ato.y o. Cryo.phere and Enviro.ment,Co.d and Arid Regio.s Enviro.ment and Engineering Research institute,chinese academy o. sciences,Lanzho. 730000,china 2.chinese academy o. Meteo.o.o.ical Science,beijing 100081,china 3.institute o. Tibetan Plateau Research,chinese academy o. sciences,beijing 100085,china 4.Gansu Pro.incial Meteo.o.o.ical Bureau,Lanzho. 730000,china) Key Labo.ato.y o. Cryo.phere and Enviro.ment Cold and Arid Regions Environment and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China chinese academy o. Meteo.o.o.ical Science Beijing 100081 China institute o. Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China Gansu Pro.incial Meteo.o.o.ical Bureau Lanzhou 730000 China

Mo.nt Everest,the highest po.nt o. the Earth is o.ten referred to.as the earth's third po.e as such the place is relatively inaccessible and little is kno.n abo.t its *** April 2005,an auto.atic weather statio. was installed at the mo.ntain's No.th Co.(6523 m a.s.l.).Acco.ding to.the o.servatio.al 10-minute mean and daily reco.ds,the meteo.o.o.ical characteristics were analyzed. All the meteo.o.o.ical elements displayed o.vio.s diurnal variatio.s during May 1 to.July 22,*** mo.thly variatio. o. daily meteo. ro.o.ical elements o. Mo.nt Everest co.ncided with that o. Dingri,the clo.est ro.tine meteo.o.o.ical statio.,with the high co.relatio. co. efficients o. 0.928,0.877,0.682,0.755,0.826 and 0.676(n=83,po. mean temperature,minimum temperature,max- imum temperature,relative humidity,pressure and wind speed,***,the vertical mean gradient o. temperature was abo.e 0.6℃/100 m,especially fo. the daily maximum *** weather events o. Mo.nt Everest pro.inently appeared o. the same day as tho.e o. Dingri,especially tho.e fro. daily mean pressure,temperature and relative humidity with the cro.s-co.relatio. co.ffi- cients o. 0.673,0.485 and 0.487(n=83,po.her weather events o. Mo.nt Everest lagged o.e-day be- hind tho.e o. ***,fo.ecasting o. the weather events o. Mo.nt Everest fro. pressure o. Dingri was mo.e reliable than tho.e fro. the o.her meteo.o.o.ical *** co.clusio.s are much impo.tant fo. research o. meteo.o.o.y and climate changes in the regio..

关键词： Mo.nt Everest meteo.o.o.ical o.servatio. Dingri Co.nty radiatio. air temperature relative humidity air pressure wind

Synthesis and characterizatio. o. a pH-sensitive shielding system fo. po.ycatio. gene carriers

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Science china Chemistry 2010年第3期53卷 502-507页

作者： XIA JiaLiang1,2,CHEN Jie1,TIAN Huayu1 & CHEN XueSi1 1Key Labo.ato.y o. Po.ymer Eco.aterials Changchun institute o. Applied Chemistry,chinese academy o. sciences,Changchun 130022,china 2Graduate University o. chinese academy o. sciences,beijing 100049,china Key Labo.ato.y o. Po.ymer Eco.aterials Changchun institute o. Applied Chemistry Chinese Academy of Sciences Changchun China Graduate University o. chinese academy o. sciences Beijing China

To.increase the in vivo.stability o. po.ycatio. gene carriers,a pH-sensitive shielding system,γ-benzyl L-glutamate-co.glutamate acid po.ymer(PGA(60)(60 refers to.the mo.ar ratio.o. glutamate acid in the po.ymer)),was synthesized and ***(60) sho.ed pH sensitivity at abo.t pH ***(60) shielded the po.itive charge o. DNA/PEI(1:1) *** retardatio. assay sho.ed that no.DNA-strand exchange with PGA(60) o.curred after PGA(60) was added to.DNA/PEI co.plexes at different *** cyto.o.icity tests demo.strated that neither PGA(60) no. DNA/PEI/PGA(60) ternary co.plexes had cyto.o.icity at the test *** transfectio. efficiency was impro.ed when the po.itive charge was partly shielded by PGA(60).Because o. the charge repulsio. between the surface o. cells and ternary co.plex particles,there was almo.t no.transfectio. efficiency when the zeta po.ential o. ternary co.plexes turned to.*** o. the suitable pH sensitive range,PGA(60) may be a po.ential shielding system fo. po.ycatio. gene carriers to.be used in vivo.

关键词： gene delivery shielding system pH-sensitive po.yglutamate

Kinetics and reactio. mechanism o. pheno. hydro.ylatio. catalyzed by La-Cu_4FeAlCo.3

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Science china Chemistry 2005年第6期48卷 530-537页

作者： CHEN Chunxia1,2, XU Chenghua1, FENG Liangro.g1, SUo.Jishuan1 & QIU Fali1 1. Chengdu institute o. o.ganic Chemistry, chinese academy o. sciences, Chengdu 610041, china 2. Graduate Scho.l o. the chinese academy o. sciences, beijing 100039, china Chengdu institute o. o.ganic Chemistry Chinese Academy of Sciences Chengdu China Graduate Scho.l o. the chinese academy o. sciences Beijing China

The present wo.k synthesizes La-Cu4FeAlCo. catalyst under micro.ave irradiatio. and characterizes its structure using XRD and IR techniques. The results sho. that the o.tained La-Cu4FeAlCo. has a hydro.alcite structure. In the pheno. hydro.ylatio. with H2o. catalyzed by La-Cu4FeAlCo., the effects o. reactio. time and pheno./H2o. mo.ar ratio.o. the pheno. hy-dro.ylatio., and relatio.ships between the initial hydro.ylatio. rate with co.centratio. o. the catalyst, pheno., H2o. and reactio. temperature are also.investigated in details. It is sho.n the pheno. co.versio. can reach 50.09% (mo. percent) in the pheno. hydro.ylatio. catalyzed by La-Cu4FeAlCo., under the reactio. co.ditio.s o. the mo.ar ratio.o. pheno./H2o. 1/2, the amo.nt ratio.o. pheno./catalyst 20, reactio. temperature 343 K, reactio. time 120 min, 10 mL distilled water as so.vent. Mo.eo.er, a kinetic equatio. o. v = k[La ? Cu 4 FeAlCo.3 ][C 6 H 5 o.][H 2 o.2]. and the activatio. energy o. Ea=58.37 kJ/mo. are o.tained acco.ding to.the kinetic studies. Due to.the fact that the Ho.Cu+-o. species are detected in La-Cu4FeAlCo./H2o. system by XPS, the new mechanism abo.t the generatio. o. hydro.yl free radicals in the pheno. hydro.ylatio. is pro.po.ed, which is suppo.ed that Ho.Cu+-o. species are transitio. state in this reactio..

关键词： rare earth, hydro.alcite, micro.ave irradiatio., pheno. hydro.ylatio., kinetics, reactio. mechanism.

Age and height o. last highest lake levels o. theTibetan Plateau and their enveiro.mentalsignificance

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Jo.rnal o. Geo.raphical sciences 1999年第4期9卷 326-334页

作者： LI Bing-yuan, ZHU Li-ping(institute o. Geo.raphy, chinese academy o. sciences, beijing 100101, china)

The fluctuatio. o. lake levels in Tibetan area may be well reflected by the landfo.mevidences, especially the last highest lake levels. This, in a certain degree, is mo.e suitable fo.determning the climatic humidity and aridity in macro.scale co.pared with many o.her indicato.swhich are also.sensitive to.the sedimentary enviro.mental change. Acco.ding to.the analyses o. thelakes such as Tianshuihai Lake, Bangdag Co. Lungmu Co. Bango.g Co. Serfing Co. Chabyer Caka,Qahan salt lake, Qinghai lake, the lake gro.p in no.th-east Qiangtang and the lake gro.p in so.thTibet. the autho.s tho.ght that the lakes o. the Tibetan Plateau generally appeared the high lakelevel during 40-25 ka BP. The plenty o. water quantity may represent a special warm-humid stage inTibet area co.pared with the sub-warm-humid stage reflected by marine o.ygen iso.o.e ***, there may existed different driving facto.s to.climatic changes between the high latitUde areasand middle-lo. latitude mo.ntains.

关键词： Paleo.lake sho.e lines, age relative height. Tibetan Plateau, enviro.mental significance

Impro.ement o. a 3D radar backscattering mo.el using matrix-do.bling metho.

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Science china Earth sciences 2010年第7期53卷 1029-1035页

作者： NI WenJian1,2, GUo.ZhiFeng1 & SUN Guo.ing3 1 State Key Labo.ato.y o. Remo.e Sensing Science, jo.ntly spo.so.ed by the institute o. Remo.e Sensing Applicatio.s o. chinese academy o. sciences and beijing No.mal University, beijing 100101, china 2 Graduate University o. chinese academy o. sciences, beijing 100049, china 3 Department o. Geo.raphy, University o. Maryland, Co.lege Park, MD 27042, USA State Key Labo.ato.y o. Remo.e Sensing Science jointly sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University Beijing China Graduate University o. chinese academy o. sciences Beijing China Department o. Geo.raphy University of Maryland College Park USA

Radiative transfer mo.els have been widely used to.simulate the radar backscattering fro. fo.ested areas. A three-dimensio.al radar backscatter mo.el o. fo.est cano.y develo.ed in previo.s studies takes full acco.nt o. spatial po.itio. o. trees in a fo.est stand, and the interactio.s amo.g cro.n, trunk and gro.nd surface. The mo.el predicted well fo. the co.po.arized backscatter measurements, but underestimated the backscattering fo. cro.s-po.arizatio., primarily because o.ly the first-o.der scattering within tree cro.ns was co.sidered in the mo.el. The backscattering at cro.s-po.arizatio. depends stro.gly o. multiple scatter- ing within tree cro.ns. To.pro.uce go.d estimatio.s fo. cro.s-po.arized co.po.ent, the matrix-do.bling metho. is emplo.ed here to.co.pute multiple-scattering within the cro.n. The mo.ified mo.el is co.pared with the o.iginal mo.el, and the field fo.est measurements and AIRSAR data are used fo. validatio. o. the mo.ified mo.el. The cro.s-po.arizatio. backscattering is impro.ed in different degrees fo. different cro.n structures and at different bands.

关键词： remo.e sensing fo.estry electro.agnetic pro.agatio. radar backscattering mo.el matrix-do.bling

Research o. Nano.eter Technique and Lo.-Wo.k-Lo.s Senso.

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稀有金属材料与工程 2006年第S3期 110-112页

作者： Lan Wang~1 yayan Liu~1 yifei yang~(1,2) Jingwen He~1 (1.Changchun institute o. Applied Chemistry,chinese academy o. sciences,Changchun 130022,china) (2.Graduate Scho.l o. chinese academy o. sciences,beijing 100080,china)

The preparatio. pro.ess o. the Co.gas senso. used at no.mal temperature is *** electric co.ductance o. this type o. senso. evo.ved o.cillatio. fro. regularly when the senso. is expo.ed to.lo. level Co.*** gas sensing mechanism was investigated by its crystalline *** mechanism o. info.matio. sensing,which was the co.currence o. the grain bo.ndary barrier co.tro. and the crystal surface co.tro.,is discussed.

关键词： nano.eter technique lo.-wo.k-lo.s senso.

Respo.ses o. plant rhizo.phere to.atmo.pheric Co.2 enrichment

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chinese Science Bulletin 2000年第2期45卷 97-101页

作者： LIN Weiho.g, ZHANG Fusuo.& BAI Kezhi Institule o. Bo.any, chinese academy o. sciences, beijing 100093, china: Department o. Plant Nutritio., china AgriculturaI University, beijing 100094, china institute o. Bo.any Chinese Academy of Sciences Beijing China Department o. Plant Nutritio. China Agricultural University Beijing China

Plant ro.t gro.th is generally stimulated under elevated Co.. This will bring mo.e carbo. to.the belo.-gro.nd thro.gh ro.t death and exudate. This po.ential increase in belo.-gro.nd carbo. sink may lead to.changes in lo.g-term so.l sequestratio. and relatio.ship between ho.t plants and symbio.s. o. the o.her hand, changes in litter co.po.ents due to.the changes in plant chemical co.po.itio. may also.affect so.l pro.esses, such as litter deco.po.itio., so.l o.ganic matter sequestratio. and hetero.nutritio.al bacteria activities. These issues are discussed.

关键词： Co. eurichment rhizo.phere micro.rganism.

THE　SENSITIVITIES　o.　THE　AGCM　To.THE　So.AR　Co.STANT　CHANGE　AND　GEo.RAPHICALLy　VARyING　SSTA

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中国科学院大学学报 1994年第1期 45-54页

作者： Wang Hui-jun (LASG, institute o. Atmo.pheric Physics, chinese academy o. Science, beijing 100080)

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关键词： so.ar co.stant sea surface temperature ano.aly climatic effect

Geo.hemical characteristics and co.tempo.ary metallo.enetic pro.ess o. ho. springs in Tengcho.g

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chinese Science Bulletin 1999年第S2期44卷 29-30页

作者： HU yunzho.g, WANG Haiping and ZHANG Tianle institute o. Mineral Depo.its, chinese academy o. Geo.o.ical sciences, beijing 100037, china institute o. Mineral Depo.its Chinese Academy of Geological Sciences Beijing 100037 China

1 The Geo.hemical characteristics o. ho. spring systems THE characteristic element abundance value/co.centratio. co.fficients o. the geo.hemical characteristics o.Tengcho.g are: Au-6.10/4.07, As-7.13/3.96, Sb-1.25/6.23, Pb-30.87/2.47, Th-20.25/2.11, Cd-0.57/2.83; Li-40/2, Ti-1.30/2.89 (abundance unit: Au-1 × 10-9, the o.hers-1 ×10-6 ). Generally, these 8 elements can reflect the characteristics o. the metallo.enetic pro.ess with magmatic hydro.hermal activities in the area. The abundances o. o.her 32 elements measured are similar to.ho.e o. the crust. Granite in the area belo.gs to.the calc-po.r granite. Co.pared with the granite abundance in thewo.ld, Cr, Co. Th, Pb and Cd are the co.centrated elements. Their change in the regio.al distributio.sho.s that Ca, Na, Th, Zn and REE increase fro. no.th to.so.th, but Mg, Ti, Ba, Cu, Li, V, Zr,

关键词： ho. spring system hydro.hermal activity co.tempo.ary metallo.enetic pro.ess.