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    题名 作者 年代 出处 被引量
1石灰岩地区碳-14样品年代的可靠性与甑皮岩等遗址的年代问题显示文摘一、前言广西桂林甑皮岩和江西万年大源仙人洞等遗址是我国南方的重要新石器遗址。对于这些遗址的时代早晚考古学界有不同的看法。我们曾对这些遗址的几个样品进行了14c年代测定啪,结果如表一: 从上表中的年代数据看,显然比考古界的一些估计偏老很多。由于这些样品多数是采自石灰岩洞穴中的贝壳和兽骨,桂林甑皮岩遗址又位于我国典型的石灰岩地区。出于对样品特殊生成环境的考虑,我国考古学家在采纳这些数据时抱着极其谨慎的态度。~(14)C Laboratory, Beijing University and ~(14)C Laboratory IA, CASS 1982考古学报1982,,2:34
2Effect of Cr(Ⅵ) and p-Chloroaniline Interaction on Their Reaction Behaviors on Soil Colloids显示文摘INTRODUCTIONStudiesonheavymetalororganicpollutantsinsoilhaverecedelymadegreatprogressboththeoreticallyandpractically.However,pollutionisusuallydevelopedbynotasinglebutamulti-substratecomplex.Furtherunderstandingthemechanismsandprocedureofmulti-substr...ZHOU DONGMEI and CHEN HUAIMAN(Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, the Chinese Academy of Sciences,Nanjing 21O008 (China))(Received April 14, 1999 revised June 8, 1999) 1999Pedosphere1999,9,3:8
3BASIC FLOW PATTERNS AND OPTIMUM HYDRAULIC DESIGN OF A SUCTION BOX OF PUMPING STATION显示文摘A numerical method based on 3 D turbulence flow was applied to simulate the flow pattern in suction boxes of six different types. In light of the computational results, the basic flow patterns in the boxes were revealed and a theoretical method to optimize hydraulically design of the suction box is developed. The box geometrical parameters, which influence the flow pattern in the box, could be optimized. The optimum criteria for the hydraulic design of the suction boxes of six types established, respectively. Furthermore, a summarization is given here based on the classification of the basic flow patterns in order to systematically understand the hydraulic design of suction boxes.Lu Lin guang Yangzhou University, Yangzhou 225009, P.R.China (Received April 14, 2000) 2000Journal of Hydrodynamics2000,12,4:6
4Contributions to a molecular phylogeny and systematics of Anemone and related genera (Ranunculaceae-Anemoninae)显示文摘Plastid atp B/ rbc L intergenic spacer sequences were obtained from 21 selected taxa and one hybrid of Anemoninae ( Anemone, Pulsatilla, Hepatica ) and compared with Ficaria (Ranunculinae) as an outgroup. From the resulting matrix (1226 bp) a single most parsimonious tree was obtained (Fig. 1). The branching of this tree is confirmed by many informative indels and appears largely congruent with past plastid restriction analyses. Several new taxa are added. The monophyly of the Anemoninae and their early split into two major clades is supported: clade I with the chromosome base number x=8, clade II with the reduced x=7. Clade I is made up of the basal Pulsatilla and the Rivularis + Vitifolia groups. The Multifida group links to the crown groups Coronaria, Blanda and Nemorosa. Clade II consists of the basal Dichotoma group, followed by Hepatica, and finally by the N. Hemisphere Narcissiflora and the S. Hemisphere Antucensis groups as sisters. The problems of the Anemoninae ancestry, phylogenetic differentiation, and recent attempts for systematic classification are critically discussed. In view of the still incomplete sampling of DNA data, a conservative and informal approach to classification problems is recommended.Friedrich Ehrendorfer Rosabelle Samuel (Department of Higher Plant Systematics and Evolution, Institute of Botany, University of Vienna, Rennweg 14, A-1030 Vienna, Austria) 2001植物分类学报2001,39,4:5
5Selected issues at the interface between nuclear physics and astrophysics as well as the standard model显示文摘The density functional theory (DFT) with a minimal number of parameters allows a very successful phenomenological description of ground state properties of nuclei all over the periodic table. The recent developments on the application of the covariant density functional theory as well as its extensions by the group in Beijing for a series of interests and hot topics in nuclear astrophysics and nuclear structure are reviewed, including the rapid neutron-capture process, Th/U chronometer, and isospin corrections for superallowed β transitions.MENG Jie1,2,3, NIU ZhongMing1, LIANG HaoZhao1 & SUN BaoHua2,4 1State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China 2School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China 3Department of Physics, University of Stellenbosch, Stellenbosch, South Africa 4Justus-Liebig-Universita¨t Giessen, Heinrich-Buff-Ring 14, Giessen 35392, Germany 2011Science China(Physics,Mechanics & Astronomy)2011,54,S1:5
6An ocean-land-atmosphere coupled model for tropical cyclone landfall processes: The multi-layer ocean model and its verification显示文摘POM (Princeton ocean model) tentatively taken as the ocean part of an ocean-land-atmosphere coupled model is verified for the ultimate purpose of studying the landfall process of tropical cyclone (TC) in the western North Pacific. The POM is tested with monthly mean wind stress in the summer and given lateral boundary conditions. The results indicate that the equilibrium state of the ocean is in accordance with the climate mean, with the error in sea surface temperature (salinity) less than 0.5 ℃ (0.5). The simulated ocean currents are reasonable as well.Several numerical experiments are designed to verify the oceanic response to a stationary or moving TC. It is found that the results agree fairly well with the previous work, including both the drop magnitude and the distribution of sea temperature. Compared with the simple two-layer ocean model used by some other studies, the response of the ocean to a TC is more logical here. The model is also verified in a real case with a TC passing the neighborhood of a buoy station. It is shown that the established ocean model can basically reproduce the sea surface temperature change as observed.DUAN Yihong1*, YU Runling1, LI Yongping11. Shanghai Typhoon Institute of China Meteorological Administration, Shanghai 200030, ChinaReceived 14 May 2005 accepted 2 November 2005 2006Acta Oceanologica Sinica2006,25,2:5
7天津市二万名0~14岁儿童哮喘流行病学调查显示文摘为完成全国小儿哮喘病发病普查工作,我们于1990年7~9月间对天津市河北区2个街及南郊区3个乡的10万名整群人群中22162名0~14岁儿童进行了小儿哮喘流行病学调查。对象与方法一、对象:以街、乡为整群调查单位。天津市0~14岁儿童哮喘流行病学调查协作组 1991天津医药1991,19,10:4
8EFFECT OF RESIDUAL STRESS ON THE MARTENSITIC TRANSFORMATION OF SPUTTER-DEPOSITED SMA THIN FILMS显示文摘TiNi thin films were sputter-deposited on circular single-crystal silicon substrates un-der various sputtering parameters. The crystal structure and residual stress of the as-deposited films were determined by X-ray diffraction and substrate-curvature method.The phenomenon of stress-suppressed martensitic transformation was observed. It isconsidered that the residual stresses in SMA thin films based on circular substratesact as balanced biaxial tensile stresses. The status of equilibrant delays the align-ment of self-accommodated variants and the volume shrinkage during the martensitictransformation.L.Wang,D.Xu and B.C.CaiInformation Storage Research Center, Shanghai Jiao Tong University, Shanghai 200030, China Manuscript received 14 September 2001 in revised form 27 November 2001 2002Acta Metallurgica Sinica(English Letters)2002,15,4:3
9An Analysis of 100 Cases of Obstructive Jaundice by CT Scans显示文摘AnAnalysisof100CasesofObstructiveJaundicebyCTScans¥HuangQinjuan,etal.ACTAACADEMIAEMEDICINAENANJING,1994,14(1):62-64Abstract:T...Huang Qinjuan,et al. ACTA ACADEMIAE MEDICINAE NANJING,1994,14(1):62-64 1994The Journal of Biomedical Research1994,18,1:2
10Palaeoceanological significance of Holocene ostracean banks in Tianjin area显示文摘On the basis of the study of ostracean banks in Tianjin area, the present study recognized that the ostracean banks at Ninghe County in Tianjin area are well developed along the west coast of the Bohai Sea; they consist of thanato-coenose and taphocoenose from Crassistrea gigars and C. revularis. From the 14C datings it can be known that the banks had formed from early Middle-Holocene and continued up to over 2 ka BP (14C age). The top has different reliefs . Although there is an effect of spatial shift of estuary position, the top is only distributed in the range of-0. 50--2. 50 m(Huanghai elevation minus National elevation system). The banks cannot explain the sea-level fluctuation. As the string ostracean banks are distributed near E-W direction, it suggests that the direction of tidal currents was then similar to that of the present day.Wang Qiang, Li Xiuwen, Zhang Zhiliang, Li Fenglin, Shao Jun, Bai Dezhong, Shang Xuexi and Tang Ruolu(Received October 24, 1990 accepted November 14, 1990) 1991Acta Oceanologica Sinica1991,10,2:2
11液体闪烁法碳-14测定工作初步报告显示文摘北大历史系考古专业碳-14实验室 1976文物1976,,12:2
12Atomic Layer Deposition of a MoSz Film显示文摘Tan L 14 Liu B Teng J H 2014Nanoscale2014,6,10:1
13The induce of apopto-sis by chemotherapeutic agents occurs in all phase of the cell cycle显示文摘14,Cotter TG Glymn JM Echeverri F 1992Anticancer Res1992,12,:1
14Hollow and concrete filled steel hollow sections under transverse impact loads显示文摘Bambach M R Jama H Zhao X L Grzebieta R 14 2008Engineering Structures2008,30,10:1
15Stabilization of pelvic ring disruptions显示文摘14,Routt ML Simonian PT Swiontkowski MF 1997Orthop Clin North Am1997,28,3:1
16The effects of grass hedges and micro-basins on reducing soil and water loss in temperate regions: A case study of Northern China显示文摘Xiao B Wang Q 14 Wang H F 2012Soil and Tillage Research2012,122,:1
17Flow simulations on Cartesian grids involving complex moving geometries flows显示文摘Forrer 14 Berger M 1998Int Ser Number Math1998,129,:1
18Inrush-current- limiting with high tc superconductor 显示文摘SHIMIZU 14 MUTSUURA K YOKOMIZU Y 2005IEEE Trans on Applied Superconductivity2005,15,2:1
1920nm intensec ontinuous light ther- apy foracne 显示文摘OmiT Bjerring PS AtoS et ah 14 2004J Cosmet Laser Ther2004,6,3:1
20Clinical study on mannan with TP regimen in treating patients I lung cancer显示文摘Yan HA Shen K peptide combined with non-small ce Prev 2013 14(8) Huang XE 2013Asian Pac J Cancer2013,,:1
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