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Triaxial ellip.o.d models of the Moon based on the laser altimetry data of Chang'E-1

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Science China Earth sciences 2010年第11期53卷 1594-1601页

作者： wang WenRui1,2,3, LI Fei1, LIU JianJun1, REN Xin2, ZoU XiaoDuan2,3, MU LingLi2, YAN JianGuo1, ZoU YongLiao2, ZHANG HongBo2, Lü Chang2, LIU JianZhong2, ZUo Wei2, SU Yan2, WEN WeiBin2, BIAN Wei2, wang Min2, LI ChunLai2 & oUYANG ZiYuan2 1 School of Geodesy and Geomatics, Wuhan university, Wuhan 430079, China 2 National Astronomical observatory of chinese academy of sciences, Beijing 100012, China 3 graduate School of chinese academy of sciences, Beijing 100049, China School of Geodesy and Geomatics Wuhan University Wuhan China National Astronomical observatory of chinese academy of sciences Beijing China graduate School of chinese academy of sciences Beijing China

Lunar geodetic parameters, which play an important role in lunar exp.o.ation, can be calculated from the gravity and topography data. With the CE-1 altimetry data and Lp gravity model, we calculate such geodetic parameters as the principle moment of inertia, the principle inertia axes, equatorial radius, polar radius, mean radius, flattening and offset between center of mass and center of figure (DCoM-CoF). According to the CE-1 altimetry data and the above geodetic parameters, a tri-axial ellip.o.d (CE-1-LAM-GEo) and a tri-axial level ellip.o.d (CE-1-LAM-LEVEL) are calculated individually, p.o.iding mass center and figure center offset (DCoM-CoF) and parameters more reliable in direction and magnitude.

关键词： Chang’E-1 laser altimetry data lunar ellip.o.d lunar gravity

Identification of AtENT3 as the main transporter for uridine uptake in Arabidopsis roots

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Cell Research 2006年第4期16卷 377-388页

作者： Kun Ling Chen~(1,2,*) Min Xin Xu~(2,3,*) Guang Yong Li~(2,3,*) Hui Liang~2 Zong Liang Xia~(2,3) Xin Liu~2 Ji Shu Zhang~1 Ai Min Zhang~2 Dao Wen wang~2 ~1School of Life sciences,Northwest Agricultural and Forestry university,Yangling 712100,China ~2Center for plant Gene Research(Beijing)and the State Kev Laboratory of plant Cell and Chromosome Engineering,Institute of Genetics and Developmental Biology,chinese academy of sciences,Datun Road,Chaovang District,Beijing 100101,China ~3graduate School of the chinese academy of sciences,Yuquan Road,Shijingshan District,Beijing 100039,China School of Life sciences Northwest Agricultural and Forestry University Yangling China Center for plant Gene Research (Beijing) and the State Key Laboratory of plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences Datun Road Chaoyang District Beijing China graduate School of the chinese academy of sciences Yuquan Road Shijingshan District Beijing China

previous studies have shown that Arabidopsis equilibrative nucleoside transporters （AtENTs） possess transport activitieswhen p.o.uced in yeast cells and are differentially expressed in Arabidopsis ***,we report further analysis onthe nucleoside transport activities and transcriptional patterns of AtENT *** recombinant p.o.eins of AtENTs3,6,and 7,but not those of AtENTs 1,2,4,and 8,were found to transport thymidine with high *** to previ-ous suggestion that AtENT1 may not transport uridine,this work showed that recombinant AtENT1 was a pH-dependentand high-affinity transporter of *** grown on MS plates,the AtENT3 knockout plants were more tolerant tothe cytotoxic uridine analog 5-fluorouridine than wild-type plants and the knockout plants ofAtENT 1 or ***-sistent with this observation,the AtENT3 knockout line exhibited a significantly decreased ability to take up [3H]uridinevia the roots when compared with wild-type plants and the plants with mutated AtENT 1 or *** indicates thatAtENT3,but not AtENTs 1 and 6,is the main transporter for uridine uptake in Arabidopsis *** transcription ofAtENTs 1,3,4,6,7,and 8 was regulated in a complex manner during leaf development and *** contrast,thesix AtENT members were coordinately induced during seed *** work p.o.ides new information on thetransport p.o.erties of recombinant AtENT p.o.eins and new clues for future studies of the in vivo transport activitiesand physiological functions of the different ENT p.o.eins in Arabidopsis plants.

关键词： Arabidopsis equilibrative nucleoside transporter expression pattern nucleoside transport functional analysis

Hypocrellin B doped and pH-responsive silica nanoparticles for p.o.odynamic therapy

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Science China Chemistry 2010年第9期53卷 1994-1999页

作者： LI ZhaoBo1,2,wang JianGuang1,2,CHEN JingRong1,LEI WanHua1,wang XueSong1 & ZHANG BaoWen1 1Key Laboratory of p.o.ochemical Conversion and op.o.lectronic Materials,Technical Institute of physics and Chemistry,chinese academy of sciences,Beijing 100190,China 2graduate university of chinese academy of sciences,Beijing 100049,China Key Laboratory of p.o.ochemical Conversion and op.o.lectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing China graduate university of chinese academy of sciences Beijing China

pH-responsive 1o2 p.o.osensitizing systems may serve as selective p.o.odynamic therapy(pDT) agents by targeting the acidic interstitial fluid of many kinds of *** this work,a natural and clinically used p.o.osensitizer(Hypocrellin B,HB) and a pH indicator(Bromocresol purple,BCp) were co-encapsulated in organically modified silica *** successfully regulated the 1o2 generation efficiency of HB through the "inner filter" effect,which shows much stronger 1o2 generation ability in an acidic than in a basic *** vitro experiments also demonstrated that HB-doped nanoparticles are effective in killing tumor cells by pDT.

关键词： p.o.odynamic therapy pH responsive bromocresol purple hypocrellin b silica nanoparticles

pH-Dependent Stability of EGX, A Multi-functional Cellulase from Mollusca, Ampullaria crossean

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Acta Biochimica et Biophysica Sinica 2004年第9期36卷 603-608页

作者： Wen-Ying LI2, Ji wang1, Yan-Hong LI1, Ming DING1, Gen-Jun XU1,3, Lan-Ying LIU2, and Fu-Kun ZHAo1,3* 1Key Laboratory of p.o.eomics, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological sciences, the chinese academy of sciences,graduate School of the chinese academy of sciences, Shanghai 200031, China 2College of Life Science, Jilin university, Changchun 130023, China College of Life Science, Zhejiang university of Science and Technology, Hangzhou 310018, China College of Life Science Jilin UniversityChangchun 130023 China Key Laboratory of p.o.eomics Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences Graduate School of the Chinese Academy of SciencesShanghai 200031 China College of Life Science Zhejiang University of Science and TechnologyHangzhou 310018 China

The cellulase activity and stability of EGX, a multi-functional cellulase previously purified from the mollusca Ampullaria crossean, was systematically studied under different pH. The pH induced con- formation and stability change of EGX have been investigated by using the intrinsic fluorescence, ANS fluorescence and CD spectrum. It has been found that the conformation and activity of this cellulase were strongly dependent on the pH. EGX was stable for both the enzyme activity and the conformation from pH 5.6 to pH 7.4. As shown by intrinsic and ANS fluorescence, no red shift of emission maximum occurred and a negligible intensity change was observed at pH 5.6–7.4. The activity of EGX remained about 80% in pH 5.6–7.4 and obviously decreased out of side the pH range. Urea-induced changes in EGX at pH 5.4 and pH 8.0 were measured by intrinsic fluorescence and CD spectrum. At pH 5.4, a significantly red shift of emission maximum occurred when the concentration of urea was 5 M compared to the concentration was 3 M at pH 8.0. The α-helix at pH 5.4 was 40.51% in the absence of urea and 31.04% in the presence of 4 M urea. At pH 8.0 the α-helix was 7.23% in the presence of 4 M urea. The data indicated that EGX was much susceptible to urea-induced unfolding at pH 8.0 and much stable at pH 5.4. The greater pH dependent stability of EGX may allow the enzyme to adequately catalyze the hydrolysis of cellulosic materials under natural or industrial extreme conditions.

关键词： multi-functional cellulase stability Ampullaria crossean fluorescence spectroscopy pH-dependent structural change CD spectrum

occurrence and Culture of Mycorrhizal Fungi Associated with oaks in Dandong Region, Liaoning p.o.ince

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pedosphere 2005年第2期15卷 232-237页

作者： wangHui DAILi-Min YANGBao-Shan LANGQing-Long GUHui-Yan InstituteofAppliedEcology ChineseAcademyofSciencesShenyang110016（China）／／GraduateSchoolofChineseAcademyofSciencesBeijing100039（China） InstituteofAppliedEcology ChineseAcademyofSciencesShenyang110016（China） InstituteofLiaoningSericulturalScience Fengcneng118100（China） InstituteofAppliedEcology ChineseAcademyofSciencesShenyang110016（China）／／CollegeofForestryNortheastForestryUniversityHarbin150040（China）

With both field investigation and pure culture experiments, the occurrence and optimal essential growth of mycorrhizal fungi with oaks in Dandong Region of Liaoning p.o.ince, China were investigated from 1997-2002 A total of 36 species of mycorrhizal fungi associated with oaks were observed. The results showed that the occurrence of mycorrhizal fungi was related to tree species, tree ages, and months of the year, with at least 20 fungi species being associated with more than two oak species. The highest Sim…

关键词： mycorrhizal fungi rnycorrhizal relationship oak pure culture

Selective Mapping Method with New phase Sequences for pApR Reduction in oFDM System

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Selective Mapping Method with New Phase Sequences for PAPR R...

potential of Industrial Byp.o.ucts in Ameliorating Acidity and Aluminum Toxicity of Soils Under Tea plantation

2011 IEEE International Conference on Information Theory and Information Security(ICITIS 2011)

作者： Lijie wang 1) pinglian wang 2) 1) academy of op.o.electronics chinese academy of sciences Beijing China 2) graduate university of chinese academy of sciences Beijing China

orthogonal frequency division multiplexing （oFDM） has increasing popularity due to its high spectrum efficiency,high data transmission and resisting channel ***,high peak-to-average power ratio （pApR） is a dominating obstacle in oFDM systems,which degrades the system *** this paper,a kind of new phase sequences combined with selective mapping algorithm （SLM） is *** results show that the imp.o.ed app.o.ch effectively reduces the pApR,and the BER performance is nearly as the same as the original oFDM system without pApR reduction measures.

关键词： oFDM system pApR reduction SLM

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pedosphere 2010年第5期20卷 645-654页

作者： LI Jiu-Yu wang Ning XU Ren-Kou D. TIWARI State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 (China) Department of Chemistry Mizoram University Tanhril Campus Aizawl 796009 (India) graduate university of the chinese academy of sciences Beijing 100049 (China)

It is imperative to choose some low cost, available and effective ameliorants to correct soil acidity in southern China for sustainable agriculture. The present investigation dealt with the possible role of industrial byp.o.ucts, i.e., coal fly ash （CFA）, alkaline slag （AS）, red mud （RM） and p.o.p.o.ypsum （pG） in correcting acidity and aluminum （Al） toxicity of soils under tea plantation using an indoor incubation experiment. Results indicated that CFA, AS and RM increased soil pH, while pG decreased the pHs of an Ultisol and an Alfisol. The increment of soil pH followed the order of RM 〉 AS 〉 CFA. All the industrial byp.o.ucts invariably decreased exchangeable Al and hence increased exchangeable Ca, Mg, K and Na and effective cation exchange capacity. RM, AS and lime decreased total soluble Al, exchangeable Al and organically bound Al. Formation and retention of hydroxyl-Al polymers were the principal mechanism through which Al phytotoxicity was alleviated by application of these amendments. In addition, the heavy metal contents in the four industrial byp.o.ucts constituted a limited environmental hazard in a short time at the rates normally used in agriculture. Therefore, the short-term use of the byp.o.ucts, especially AS and RM, as amendments for soil acidity and AI toxicity in acid soils may be a potential alternative to the traditional use of mined gypsum and lime.

关键词： acid soil alkaline slag amelioration coal fly ash red mud

Isospin and symmetry energy study in nuclear EoS

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Science China(physics,Mechanics & Astronomy) 2011年第S1期54卷 141-148页

作者： TIAN WenDong1, MA YuGang1, CAI XiangZhou1, FANG DeQing1, wang HongWei1 & WU HongLi1,2 1 Shanghai Institute of Applied physics, chinese academy of sciences, Shanghai 201800, China 2 graduate School of university of Science and Technology of China, Hefei 230026, China Shanghai Institute of Applied physics Chinese Academy of Sciences Shanghai China graduate School of university of Science and Technology of China Hefei China

This paper summarizes the isoscaling and isospin related studies in asymmetry nuclear reactions by different dynamic and sta tistical models. Isospin dependent quantum molecular dynamics model (IQMD) and lattice gas model (LGM) are used to study the isoscaling p.o.erties and isoscaling parameters dependence on incident energies, impact parameters, temperature and other parameters. In the LGM model, the signal of phase transition has been found in free neutron (p.o.on) chemical potential dif ference Δμn or Δμp as a function of temperature, or in free neutron and p.o.on chemical potential difference Δμn-Δμp. Density dependence of symmetry energy coefficient Csym(ρ/ρ0) is also studied in the frame of LGM, with the potential parameters which can rep.o.uce the nuclear ground state p.o.erty, soft density dependence of symmetry energy is deduced from the sim ulation results. Giant dipole resonance (GDR) induced by isospin asymmetry in entrance channel is also studied via IQMD model, and the dynamic dipole resonance shows isospin sensitivity on the isospin asymmetry of entrance channel and sym metry energy of the nuclear equation of state (EoS). GDR can also be regarded as a possible isospin sensitive signature.

关键词： nuclear EoS isospin isoscaling density giant dipole resonance

Multi-epoch X-ray observations of the narrow-line Seyfert 1 galaxy SDSS J160508.87+323921.4 with XMM-Newton

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Science China(physics,Mechanics & Astronomy) 2010年第S1期53卷 207-211页

作者： AI YanLi1,2,3,YUAN WeiMin1,2,ZHoU HongYan4,5 & wang JianGuo1,2,3 1 National Astronomical observatories/Yunnan observatory,chinese academy of sciences,Kunming 650011,China 2 Key Laboratory for the Structure and Evolution of Celestial objects,chinese academy of sciences,Kunming 650011,China 3 graduate university of the chinese academy of sciences,Beijing 100049,China 4 Center for Astrophysics,university of Science and Technology of China,Hefei 230026,China 5 Joint Institute of Galaxies and Cosmology,SHAo and USTC,Shanghai 200030,China National Astronomical observatories/Yunnan observatory Chinese Academy of Sciences Kunming China Key Laboratory for the Structure and Evolution of Celestial objects Chinese Academy of Sciences Kunming China graduate university of the chinese academy of sciences Beijing China Center for Astrophysics University of Science and Technology of China Hefei China Joint Institute of Galaxies and Cosmology SHAO and USTC Shanghai China

We present results of multi-epoch XMM-Newton observations separated by several years of the narrow-line Seyfert 1(NLS1) galaxy,SDSS J160508.87+*** NLS1 showed X-ray flux variations on timescales of years as well as low amplitude variations on timescales as short as hours,while the X-ray spectral shape remained essentially *** spectrum shows a significant soft X-ray *** model of reflection from an ionized disc,that is dominant in the whole XMM-Newton bandpass,p.o.ides the best description of the observed spectra for all the observations,though alternatives such as Comp.o. scattering(T-0.25 keV) cannot be ruled out in a statistical *** the disc reflection model,the observed variations may originate either from the change in the reflection fraction,or from the variability of the intrinsic X-ray luminosity.

关键词： galaxies:active Seyfert X-rays individual