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β-delayed proton decays near the proton drip line

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Science China(Physics,Mechanics & astronomy) 2005年第3期48卷 257-267页

作者： XU Shuwei 1 , LI Zhankui 1 , XIE Yuanxiang 1 , HUANG Wenxue 1 , SHU Nengchuan 2., CHEN Yongshou 2., XU Furong 3., WANG Kun 4., PAN Qiangyan 1 , WANG Xudong 1 , YU Yong 1 & XING Yebing 1 1. Institute of Modern Physics, chinese {2. of Sciences, Lanzhou 73.000, China 2. Nuclear Physics Department, China Institute of Atomic Energy, Beijing 102.13. China 3. Department of Technical Physics, Peking University, Beijing 100871, China 4. shanghai Institute for Nuclear {3., shanghai 2.1800, China 1. Institute of Modern Physics Chinese Academy of Sciences 730000 Lanzhou China 2. Nuclear Physics Department China Institute of Atomic Energy 102413 Beijing China 3. Department of Technical Physics Peking University 100871 Beijing China 4. shanghai Institute for Nuclear research 201800 Shanghai China

We briefly reviewed the experimental study on a-delayed proton decays near the proton drip line published by our group during the period of 1996―2.04. namely the first observation of the a-delayed proton decays of 9 new nuclides in the rare-earth region and the new measurements of a-delayed proton decays of 5 nuclides in the mass ～90 region near the N = Z line with the aid of the “p-?” coincidence in combination with a He-jet tape transport system. In the meantime some important experimental technique details were supplemented. The experimental results, including the half -lives, spins, parities, deformations and production reaction cross sections for the 14.nuclei were summarized and compared with the current nuclear-model predictions, and then the following points were represented. (1) The experimental half-lives for 85Mo and 92.h as well as the predicted “waiting point” nuclei 89Ru and 93.d are 5―10 times longer than the theoretical predictions given by M?ller et al. using a macroscopic-microscopic model. It considerably influences the predictions of the abundances of the nuclides produced in the rp-process. (2. The current-model predictions are not consistent with the experimental assignments of the spins and parities for the proton drip-line nuclei 14.0}o and 12.Pm. However, the nuclear potential energy surface (PES) calculated by using a Woods- Saxon-Strutinsky method reproduced the experimental results. (3. The Alice code overestimated the production reaction cross sections of the studied 9 rare-earth nuclei by one order of magnitude or two, while HIVAP code overestimated them by one order of magnitude approximately.

关键词： proton drip line, β-delayed proton decay, He-jet tape transport system, "p-γ" coincidence, spin, parity, deformation, production reaction cross section.

CO observations of massive star forming regions at different evolutionary phases

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Science China(Physics,Mechanics & astronomy) 2006年第5期49卷 626-640页

作者： CHEN Xi1,2. XU Ye1,3. SHEN Zhiqiang1,3.& LI Jingjing1,2.1. {2. astronomical Observatory, chinese {3. of Sciences,{4., China 2. Graduate School of the chinese {3. of Sciences, Beijing 10003., China 3. Joint Institute for Galaxy and Cosmology, {2. astronomical Observatory and the University of Science and Technology of China,{4., China shanghai astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Graduate School of the chinese academy of Sciences Beijing 100034 China Joint Institute for Galaxy Cosmology Shanghai Astronomical Observatory the University of Science Technology of China Shanghai 200030 China

The 12.O (J=1-0), 13.O (J=1-0) and C18O (J=1-0) emissions in 9 massive star forming regions, which are believed to be at different stages of massive star formation, were mapped with the 13.7 m millimeter wave telescope at Qinghai Station of Purple Mountain Observatory. Of the observed 9 sources, 13.O cores were detected in seven of them, and C18O cores in five of them. And only two sources associated with C18O cores and H2. masers showed the extended structures and strong outflows. This is the first detection of outflow associated with IRAS 2.566+582. in the observing field of S152.S153. The physical parameters of cores and outflows for these sources, derived from Local Thermal Equilibrium (LTE) analysis, are presented. These observing results suggest that the C18O cores will only appear when the gas density is high enough and the probability to have an outflow is very high when the clumps show the C18O and H2. maser simulta- neously.

关键词： star formation cloud core outflow H2. maser

Modeling the impact of Australian Plate drift on Southern Hemisphere climate and environment

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chinese Science Bulletin 2005年第14期50卷 1495-1502页

作者： ZHOU Botao1,5, ZHAO Ping2. JIAN Zhimin3.& HE Jinhai4.1. Nansen-Zhu International research {2., Institute of Atmospheric Physics, {4. {3. of Sciences, Beijing 10002., China 2. Institute of Climate and Environment, {4. {3. of Meteoro- logical Sciences, Beijing 100081, China 3. Laboratory of Marine Geology, Tongji University, shanghai 2.0092. China 4. Department of Atmospheric Sciences, Nanjing Institute of Meteorol- ogy, Nanjing 2.004., China 5. Graduate School of the {4. {3. of Sciences, Beijing 10003., China Nansen-Zhu International research center Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Graduate School of the chinese academy of Sciences Beijing 100039 China Institute of Climate and Environment Chinese Academy of Meteorological Sciences Beijing 100081 China Laboratory of Marine Geology Tongji University Shanghai 200092 China Department of Atmospheric Sciences Nanjing Institute of Meteorology Nanjing 210044 China

Using a global atmosphere-ocean coupled model with the present-day and 14.MaB.P. oceanic topogra- phy respectively, two experiments are implemented to inves- tigate the effect of different locations of Australian Plate on the atmospheric circulation in middle-high latitudes of the Southern Hemisphere. The results show that when Austra- lian Plate lay south at 14.MaB.P., both anticyclone circula- tions in the subtropical oceans and cyclone circulation around 60°-70°S are strengthened. Subtropical highs and circumpolar low pressure appear stronger, which results in much stronger Antarctic Oscillation and shorter period of Antarctic Oscillation Index (AOI) at 14.MaB.P. The rainfall and the surface air temperature also change correspondingly. The precipitation decreases around 4.°S and increases around 60°-70°S, and the surface air temperature rises in high latitudes of the South Pacific and descends over the Weddell Sea and its north side. Besides, due to the changes of the temperatures and winds, Antarctic sea ice coverage also changes with its increasing in the Ross Sea and its west re- gions and decreasing in the Weddell Sea.

关键词：半球气候地球环球澳大利亚漂流物海洋地形学

Time of impact of fragment P2.of comet SL 9 on Jupiter

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chinese Science Bulletin 1997年第5期42卷 396-398页

作者： ZHOU Hongnan,QIAN Bochen, HUANG Keliang and LI Qibin1. Department of astronomy, Nanjing University, Nanjing 2.0093. China 2. {2. Observatory, chinese {3. of Sciences,{4., China 3. Physics Department, Nanjing Normal University, Nanjing 2.0097, China 4. Beijing astronomical Observatory, chinese {3. of Sciences, Beijing 100080, China Department of astronomy Nanjing University Nanjing China shanghai Observatory Chinese Academy of Sciences Shanghai China Physics Department Nanjing Normal University Nanjing China Beijing astronomical Observatory Chinese Academy of Sciences Behijing China

FROM 1994.07-16 to 1994.07-2., 2. fragments of comet SL 9 impacted against Jupiter in succession. During the impact period the impact of fragments D, E, K, N, P2.and S was observed in China. We used a 1.56-m telescope with the CCD camera of shanghai Observatory to monitor Jupiter and its Galilean Satellites, obtaining 1000 high-quality images at B, V, I wave bands. Our data on optical wave bands are rather complete and valuable in the world. Specially, we got some images of Jupiter, Io and Europa in the impact time of fragment P2.impacting against Jupiter. This will help us understand the precise time, position, depth and energy of the P2.s collision. In this note, we report the impact time of fragment P2.of comet SL 9 and Jupiter. Since the impact of comet SL 9 was expected to take place on the side of Jupiter

关键词： comet comet Shoemaker-Levy 9 impacting against Jupiter impact time.

Orbit determination for geostationary satellites with the combination of transfer ranging and pseudorange data

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Science China(Physics,Mechanics & astronomy) 2010年第9期53卷 1746-1754页

作者： GUO Rui1,2.3.4.HU XiaoGong2.4.LIU Li1,WU XiaoLi1,HUANG Yong2.4.& HE Feng1 1 Beijing Global Information Application and Development {4.,Beijing 100094.China 2.{2. astronomical Observatory,{3. {4. of Sciences,{2. 2.0030,China 3.Graduate University of {3. {4. of Sciences,Beijing 10004.,China 4.Space Navigation and Positioning Technology,Laboratory of {2. Municipal,{2. 2.0030,China 1. Beijing Global Information Application and Development center Beijing 100094 China2. Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China3. Graduate University of Chinese Academy of Sciences Beijing 100049 China4. Space Navigation and Positioning Technology Laboratory of Shanghai Municipal Shanghai 200030 China

Geostationary satellites(GEOs) play a significant role in the regional satellite navigation *** experiments show that the clock corrections could be mitigated through a single strategy or double differencing strategies for a navigation constellation,but for the mode of individual GEO orbit determination,high precision orbit and clock correction could not be obtained in the orbit determination based on the pseudorange data.A new GEO combined precise orbit determination(POD) strategy is studied in this paper,which combines pseudorange data and C-band transfer ranging *** strategy overcomes the deficiency of C-band transfer ranging caused by limited stations and tracking time *** the combination of transfer ranging and pseudorange data,clock corrections between the GEO and the stations can be estimated simultaneously along with orbital parameters,maintaining self-consistency between the satellite ephemeris and clock correction *** error covariance analysis is conducted to illuminate the contributions from the transfer ranging data and the psudoranging *** data collected for a chinese GEO satellite with 3.C-band transfer ranging stations and 4.L-band pseudorange tracking stations,POD experiments indicate that a meter-level accuracy is *** root-mean-square(RMS) of the post-fit C-band ranging data is about 0.2.3.m,and the RMS of the post-fit pseudorange is 0.4.8 *** component errors of the POD experiments are independently evaluated with the satellite laser ranging(SLR) data from a station in Beijing,with the residual RMS of 0.076 *** SLR evaluation also suggests that for 2.h orbital predication,the predicted radial error is about 0.4.4.m,and the clock correction error is about 1.3. *** for the combination of one C-band transfer ranging station and 4.pseudorange stations,POD is able to achieve a reasonable accuracy with the radial error of 0.2.0 m and the 2.h predicted radial error of 0.888 *** syn

关键词： satellite navigation precise orbit determination pseudorange equipment ranging delay GEO SLR

Progress in the detection of human genome structural variations

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Science China(Life Sciences) 2009年第6期52卷 560-567页

作者： WU XueMei1,3.& XIAO HuaSheng1,2.1 center of Functional Genomics,Key Laboratory of System Biology,{2. Institutes for Biological Sciences,{4. {3. of Sciences,{2. 2.003.,China 2.National Engineering center for Biochip at {2.,{2. 2.12.3.China 3.Graduate School of the {4. {3. of Sciences,{2. 2.003.,China 1. center of Functional Genomics Key Laboratory of System Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200031 China 3. Graduate School of the chinese {2. of Sciences Shanghai 200031 China 2. National Engineering center for Biochip at shanghai Shanghai 201203 China

The emerging of high-throughput and high-resolution genomic technologies led to the detection of submicroscopic variants ranging from 1 kb to 3.Mb in the human *** variants include copy number variations(CNVs),inversions,insertions,deletions and other complex rearrangements of DNA *** paper briefly reviews the commonly used technologies to discover both genomic structural variants and their potential ***,we highlight the array-based,PCR-based and sequencing-based assays,including array-based comparative genomic hybridization(aCGH),representational oligonucleotide microarray analysis(ROMA),multiplex amplifiable probe hybridization(MAPH),multiplex ligation-dependent probe amplification(MLPA),paired-end mapping(PEM),and next-generation DNA sequencing ***,we discuss the limitations and challenges of current assays and give advices on how to make the database of genomic variations more reliable.

关键词： structural variation cytogenetic microarray PCR paired end mapping(PEM) next-generation sequencing

Waiting time in block fading MIMO systems with dynamic-depth interleaving

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Science China(Information Sciences) 2010年第8期53卷 1622-1627页

作者： GUO HaiYou 1,2., HU HongLin 1,2.& ZHANG Yan 3.1 Key Laboratory of Wireless Sensor Network & Communication, shanghai Institute of Microsystem and Information Technology, {2. academy of Sciences, shanghai 2.0050, China 2.shanghai research center for Wireless Communications, shanghai 2.03.5, China 3.Simula research Laboratory, Lysaka 13.5, Norway 1. Key Laboratory of Wireless Sensor Network & Communication Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China2. Shanghai Research Center for Wireless Communications Shanghai 200335 China3. Simula Research Laboratory Lysaka 1325 Norway

Interleaving is an efficient measure to resolve the bursty errors in a block fading multiple-inputs multiple-outputs (MIMO) system. For the metrics of network layer, interleaving exerts two conflicting effects on the ultimate delay performance. Specifically, interleaving can advantageously reduce data transmit time. On the other hand, it comes at a cost, entailing an undesired delay penalty resulting from interleaving depth. Here, we exploit a unified model to accommodate these two conflicting effects, and derive the average waiting time in block fading MIMO systems with dynamic-depth interleaving. Such a unified model is developed with a combined method of both information theory and queueing theory. Therefore, the model is capable of characterizing the randomness of data arrival process, hence the nature of dynamic-depth interleaving. The methodology and the results are applicable to designing, evaluating, and tuning the practical interleaving systems.

关键词： dynamic-depth interleaving multiple-inputs multiple-outputs (MIMO) queueing analysis waiting time

Association of DRD2.polymorphisms and chlorpromazine-induced extrapyramidal syndrome in chinese schizophrenic patients

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Acta Pharmacologica Sinica 2006年第8期27卷 966-970页

作者： Sheng-nan WU~(2.3.5,6) Rui GAO~(2.3.6) Qing-he XING~(2.3.6) Hua-fang LI~4.Yi-feng SHEN~4.Niu-fan GU~4.Guo-yin FENG~4.Lin HE~(2.3.7)2.Bio-X Life Science research center,shanghai Jiaotong University,shanghai {4.,China 3.Institute of Nutritional Sciences,SIBS,chinese academy of Sciences,shanghai 2.003.,China 4.shanghai Institute of Mental Health,shanghai {4.,China 5 shanghai Institute of Hypertension,Ruijin Hospital,Medical School of shanghai Jiaotong University,shanghai 2.002.,China Bio-X Life Science research center Shanghai Jiaotong University Shanghai 200030 China

Aim:Extrapyramidal syndrome (EPS) is most commonly affected by typical antip-sychotic drugs that have a high affinity with the D2.***,manyresearch groups have reported on the positive relationship between the geneticvariations in the DRD2.gene and the therapeutic response in schizophrenia pa-tients as a result of the role of variations in the receptor in modulating *** this study,we evaluate the role DRD2.plays in chlorpromazine-induced EPS in schizophrenic ***:We identified seven SNP(singlenucleotide polymorphism) (-14.Cins>del,TaqIB,TaqID,Ser{4.1Cys,rs62.5,rs62.7and TaqIA) in the DRD2.gene in 14. schizophrenic inpatients (59 with EPS and 87without EPS according to the Simpson-Angus Scale) treated with chlorpromazineafter 8 *** alleles of all loci were determined by PCR (polymerase chainreaction).Results:Polymorphisms TaqlD,Ser{4.1Cys and rs62.7 were not poly-morphic in the population recruited in the present *** statistical signifi-cance was found in the allele distribution of-14.Cins>del,TaqIB,rs62.5 andTaqIA or in the estimated haplotypes (constituted by TaqIB,rs62.5 and TaqIA) inlinkage disequilibrium between the two ***:Our results did notlend strong support to the view that the genetic variation of the DRD2.gene playsa major role in the individually variable adverse effect induced by chlorpromazine,at least in chinese patients with *** results confirmed a previousstudy on the relationship between DRD2.and EPS in Caucasians.

关键词： dopamine receptors basal ganglia disease polymorphism chlorpromazine schizophrenia

Insulin-sensitizing effects of a novel α-methyl-α-phenoxylpropionate derivative in vitro

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Acta Pharmacologica Sinica 2007年第3期28卷 417-422页

作者： Hao-shu WU~(2.4. Juan-hong YU~(3.4. Ying-yin LI~2.Yu-she YANG~3.Qiao-jun HE~2.Yi-jia LOU~(2.5) Ru-yun JI~3.~2.epartment of Pharmacology and Toxicology,College of Pharmaceutical Sciences,Zhejiang University,Hangzhou 3.0058,China ~3.tate Key Laboratory of Drug research,shanghai Institute of Materia Medica,shanghai Institutes for Biological Sciences,Graduate School of the {3. {14. of Sciences,shanghai 2.12.3.China Department of Pharmacology and Toxicology College of Pharmaceutical Sciences Zhejiang University Hangzhou 310058 China Department of State Key Laboratory of Drug research Shanghai Institute of Materia Medica Shanghai Institutes for Biological Sciences Graduate School of the Chinese Academy of Sciences Shanghai 201203 China

Aim:To examine the insulin sensitizing effects of a novel α-methyl-α-phenoxylpropionate derivative YY2. in insulin-sensitive cell ***:Theperoxisome proliferator-activated receptor γ（PPARγ）agonist bioactivities of YY2.were detected by a preadipocyte differentiation ***-PCR and Westernblotting analysis were used to detect the expression of the target gene or *** effects of YY2. on insulin-mediated glucose consumption were determined inthe HepG2.human hepatocellular carcinoma ***:YY2. could enhancethe differentiation of preadipocytes to adipocytes and upregulate the gene ex-pression of PPARγ2.as well as the protein expression of insulin receptor sub-strate-1（IRS-1）,glucose transporter-4.GLUT4.,and adiponectin（ACRP3.）.Theeffects on GLUT4.and ACRP3. could be reversed by the PPARγ inhibitor ***,YY2. efficiently reduced glucose consumptions in HepG2.cells after2. h culture,and the effects were related to insulin and YY2. ***:YY2.,a potential insulin-sensitizing agent like rosiglitazone,couldenhance glucose consumption in HepG2.cells in a concentration-and insulin-dependent *** may improve the insulin resistance associated with type 2.iabetes.

关键词： YY2. peroxisome proliferator-activated receptor y insulin sensitivity glucose consumption