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Analysis on the Dynamical Process of Donghekou Rockslide-Debris Flow Triggered by 5.12 Wenchuan Earthquake

Journal of Mountain Science 2011年第2期8卷 140-148页

作者： SUN Ping ZHANg Yongshuang SHI Jusong CHEN Liwei Key Laboratory of Neotectonic Movement & geohazard Ministry of Land and Resources Beijing China institute of geomechanics Chinese Academy of Geological Sciences Beijing China China nuclear Power Engineering Corporation Ltd. Beijing China

Among the geo-hazards caused by the great Wenchuan Earthquake, the rapid and long runout rockslide-debris flow is of primary concern due to the large volume of displaced material and the resultant catastrophic impacts to the landscape and socioeconomic structure. In order to analyze the dynamical process of this kind of geo-hazard, the Donghekou rockslide-debris flow is given as an example in this paper. This event, which killed 780 people, initiated at an elevation of 1300 m with a total long run-out distance of more than 24.0 m. The slide mass is mainly composed of dolomite limestone and siliceous limestone of Sinian system, together with carbon slate and phyllite of Cambrian. During the processes from slide initiation to the final cessation of slide movement, five dynamic stages took place, here identified as the initiation stage, the acceleration of movement stage, the air-blast effect stage, the impact and redirection stage and the long runout slidematerial accumulation stage. Field investigations indicate that due to the effects of the earthquake, the dynamics of the Donghekou rockslide-debris flow are apparently controlled by geologic and tectonic conditions, the local geomorphological aspects of the terrain, and the microstructural and macroscopic mechanical properties of rocks which compose the slide mass. These three main factors which dictate the Donghekou rockslide-debris flow dynamics are discussed in detail in this paper, and significant results of field investigations and tests of materials are presented. The above dynamical processes are analyzed in this paper, and some useful conclusions have been gained.

关键词： Dynamical process Donghekou Rockslide-debris flow Wenchuan earthquake

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Source time-function as discriminant using empirical green's function

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Science China Earth Sciences 2005年第12期48卷 2118-2122页

作者： HE Yongfeng1,2 & CHEN Xiaofei1 1. Department of geophysics, School of Earth & Space Sciences, Peking University, beijing 100871, China 2. North-West institute of nuclear Technology, Xi’an 710024. China 1. Department of geophysics School of Earth & Space Sciences Peking University 100871 Beijing China 2. North-West institute of nuclear Technology 710024 Xi’an China

The source mechanism of underground nuclear explosions is remarkably different from that of earthquakes in both spatial radiation pattern and source time-function (STF). Small underground nuclear explosions can be used as empirical green’s functions (EgF) to isolate the source-time spectrum of a large suspected earthquake occurred in a nuclear Test Site (target area) by the spectral division method. As this study shows, with high-quality data, the quotient spectrum can be transformed to the time domain, yielding the apparent far-field source-time function of the large suspected event. The relative source time-function (RSTF) of a nuclear ex-plosion is usually a simple pulse with a duration of about 1 s., while an earthquake’s is more complicated with a series of pulses and a longer duration. The RSTF can be used as a nice dis-criminant to distinguish the nature earthquakes from underground nuclear explosions in target areas.

关键词： target-area, empirical green's function, RSTF.

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A 12-bit multichannel ADC for pixel detectors in particle physics and nuclear imaging

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Science China(Technological Sciences) 2010年第5期53卷 1208-1214页

作者： WEI Wei1,2,3,WANg Zheng1,3 & ZHAO JingWei1,3 1 institute of High Energy Physics,Chinese Academy of Sciences,beijing 10004.,China 2.graduate University of Chinese Academy of Sciences,beijing 10004.,China 3 Key Lab of {4. Detection Technology and {4. Electronics of Chinese Academy of Sciences,beijing 10004.,China 1. institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China3. Key Lab of Nuclear Detection Technology and Nuclear Electronics of Chinese Academy of Sciences Beijing 100049 China

Modern pixel detectors in nuclear and particle physics experiments and also in nuclear imaging,starve for highly integrated application specified integrated circuit(ASIC),whereas in China the study of ASIC still stays far away from practical *** lack of ASIC strictly limits the research and development of domestic high energy physics field.A 12-bit multichannel ADC designed for high density readout is introduced as a major candidate for solution.A precise model is discussed and the simulation fully agrees with the model,which indicates a key principle of *** is performed according to the given rule,and novel layout techniques are carried *** results in all aspects are also obtained,showing an excellent real performance,which satisfies the practical requirement.

关键词： application specified integrated circuit high density readout Wilkinson ADC multi-channel ADC

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RELATIVISTIC CALCULATION OF IONIZATION ENERgIES FOR TITANIUM IONS Ti Ⅰ TO Ti XXII

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原子与分子物理学报 1998年第1期 4-9页

作者： Chen Bo1,2 Tan Mingliang2 Jiang gang2Zhu Zhenghe2 Zhao Yongkuan3( 1 institute of nuclear Science and Technology, Sichuan Union University, Chengdu 610064. P. R. China.2 institute of Atomic and Molecular Physics, Sichuan Union Un

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ＲＥＬＡＴＩＶＩＳＴＩＣＣＡＬＣＵＬＡＴＩＯＮＯＦＩＯＮＩＺＡＴＩＯＮＥＮＥＲＧＩＥＳＦＯＲＴＩＴＡＮＩＵＭＩＯＮＳＴｉⅠＴＯＴｉＣｈｅｎＢｏ１，２ＴａｎＭｉｎｇｌｉａｎｇ２ＪｉａｎｇＧａｎｇ２ＺｈｕＺｈｅｎｇｈｅ２ＺｈａｏＹｏｎｇｋｕａｎ３１Ｉｎ...

关键词： Ti ion Ionization energy MCDF technique

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Clinical application of several tumor imaging agents

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nuclear Science and Techniques 1999年第1期10卷 35-40页

作者： DINg Hong ZHU Weiqing (Jiangsu institute of nuclear Medicine, Wuxi 214.63) Jiangsu institute of nuclear Medicine Wuxi 214063

Neoplasms is one of the main diseases for harming health. It is difficult to prevent the neoplasms because the factors of bringing out them are complex. To raise survival rate the early diagnosis of tumors is very important. Radionuclide imaging is useful to detect recurrent or residual disease and to identify benign or malignant tumor. Several tumor imaging agents as following have clinical significance in diagnosing tumors.

关键词：肿瘤造影剂临床应用肿瘤诊断

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Layer-block tectonics of Cenozoic basements and formation of intra-plate basins in Nansha micro-plate, southern South China Sea

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Acta Oceanologica Sinica 2009年第3期28卷 26-39页

作者： LIU Hailing XIE guofa LIN Qiujin ZHENg Hongbo LIU Yingchun Key Laboratory of Marginal Sea geology South China Sea Institute of OceanologyChinese Academy of Sciences Guangzhou 510301 China Brigade 261 Bureau of Nuclear Geology Jiangxi Province Yingtan 335001 China

Layer-block tectonics （LBT） concept, with the core of pluralistic geodynamic outlook and multilayer-sliding tectonic outlook, is one of new keys to study 3-dimensional solid and its 4.dimensional evolution history of global tectonic system controlled by global geodynamics system. The LBT concept is applied to study the lithospheric tectonics of the southern South China Sea （SCS）. Based on the analysis of about 30 000 km of geophysical and geological data, some layer-blocks in the Nansha micro-plate can be divided as Nansha ultra-crustal layer-block, Zengmu crustal layer-block, Nanwei （Rifleman bank）-Andu （Ardasier bank） and Liyue （Reed bank） North Palawan crustal layer-blocks, Andu-Bisheng and Liyue-Banyue basemental layer-blocks. The basic characteristics of the basemental layer-blocks have been dicussed, and three intra-plate basin groups are identified. The intra-plate basins within Nansha micro-plate can be divided into three basin groups of Nanwei- Andu, Feixin-Nanhua, and Liyue-North Palawan based on the different geodynamics. In the light of pluralistic geodynamic concept, the upheaving force induced by the mid-crust plastic layer is proposed as the main dynamical force which causes the formation of the intra-plate basins within the Nansha micro-plate. Finally, models of a face-to-face dip-slip detachment of basemental layerblock and a unilateral dip-slip-detachment of basemental layer-block are put forward for the forming mechanisms of the Nanwei Andu and Liyue-North Palawan intra-plate basin groups, respectively.

关键词： layer-block tectonics forming mechanism of intra-plate basin Nansha micro-plate South China Sea oil and gas gas hydrate

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Proton-neutron symplectic model description of ^(106)Cd

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Chinese Physics C 2024年第3期48卷 169-179页

作者： H.g.ganev Joint institute for nuclear Research DubnaRussia institute of Mechanics Bulgarian Academy of SciencesSofiaBulgaria

In this study,a microscopic shell-model description of the low-lying collective states in the weakly deformed nucleus ^(106)Cd within the recently proposed microscopic version of the Bohr-Mottelson model is provided.A good description of the excitation energies of the lowest ground,γ,andβquasibands is obtained without the adjustable kinetic energy ***,γdegrees of freedom are shown to play a crucial role in the description of spectroscopy of this nucleus.A modified SU(3)SU(3)preserving high-order interaction is used to produce aγ-unstable type of odd-even staggering,observed experimentally between the states of the quasi-γ*** current approach enables the characterization of observed intraband and interband quadrupole *** findings of this study propose an alternative interpretation of the fundamental question regarding the nature of low-energy vibrations,as well as the emergence of deformation and collectivity in weakly deformed atomic nuclei.

关键词： shell-model version of the Bohr-Mottelson model proton-neutron symplectic model Sp(12,R)dynamical algebra quadrupole dynamics

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fMRI time series analysis based on stationary wavelet and spectrum analysis

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Progress in Natural Science:Materials International 2006年第11期16卷 1171-1176页

作者： ZHI Lianhe~ 1,2,3 , ZHAO Xia~4. SHAN Baoci~1**, PENg Silong~5, YAN Qiang~1, YUAN Xiuli~1 and TANg Xiaowei~ 1,6 (1. Key Laboratory of nuclear Analysis Techniques, institute of High Energy Physics, Chinese Academy of Sciences, beijing 10004., China 2. graduate School of Chinese Academy of Sciences, beijing 10004., China 3. Department of Physics, Zhoukou Normal University, Zhoukou 4.6100, China 4. Research Imaging Center, University of Texas Health Science Center, San Antonio, Texas 78229, USA 5. National ASIC Design and Engineering Center, institute of Automation, Chinese Academy of Sciences, beijing 10004., China 6. Department of Physics, Zhejiang University, Hangzhou 310027, China) [a]Key Laboratory of nuclear Analysis Techniques Institute of High Energy Physics Chinese Academy of Sciences Beijing China [b]graduate School of Chinese Academy of Sciences Beijing China [c]Department of Physics Zhoukou Normal University Zhoukou China [d]Research Imaging Center University of Texas Health Science Center San Antonio Texas USA [e]National ASIC Design and Engineering Center Institute of Automation Chinese Academy of Sciences Beijing China [f]Department of Physics Zhejiang University Hangzhou China

The low signal to noise ratio (SNR) of functional MRI (fMRI) prefers more sensitive data analysis methods. Based on stationary wavelet transform and spectrum analysis, a new method with high detective sensitivity was developed for analyzing fMRI time series, which does not require any prior assumption of the characteristics of noises. In the proposed method, every component of fMRI time series in the different time-frequency scales of stationary wavelet transform was discerned by the spectrum analysis, then the components from noises were removed using the stationary wavelet transform, finally the components of real brain activation were detected by cross-correlation analysis. The results obtained from both simulated and in vivo visual experiments illustrated that the proposed method has much higher sensitivity than the traditional cross-correlation method.

关键词： fMRI stationary wavelet transform spectrum analysis data analysis.

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Critical phenomena of a nuclear system in alternative ZM models

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nuclear Science and Techniques 2000年第3期11卷 173-178页

作者： SONg Hong-Qiu (Research Center of nuclear Theory of National Laboratory Of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000 Shanghai institute of nuclear Research, the Chinese Academy of Sciences, Shanghai 201800) 兰州原子核理论研究中心重离子加速器国家实验室甘肃兰州 730000

Alternative versions of the ZM model are extended to asymmetric nuclear matter by including p meson degree of freedom in the Lagrangian. The extended models are then used to study the thermodynamical properties of asymmetric nuclear matter at finite temperature. The critical temperature for a liquid- gas phase transition in nuclear matter and its dependence on asymmetry parameter are calculated. The limiting temperature Tlim, which reflects Coulomb instability of hot nuclei, is studied. The calculated results are compared with that given by the original ZM model.

关键词：放射性核素临界现象 ZM模型固气相变热力学稳定性核子核反应临界温度

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Theory study of shapes in ^(187,189)Tl nuclei

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Science China(Physics,Mechanics & Astronomy) 2009年第6期52卷 818-821页

作者： LIU YanXin1, YU ShaoYing1,2,3, SHEN CaiWan1,5 & DONg YongSheng1,2,4.1 School of Science, Huzhou Teachers College, Huzhou 313000, China 2 School of Science and Information Engineering, Zhejiang Normal University, Jinhua 321000, China 3 institute of Theoretical Physics, Chinese Academy of Sciences, beijing 100080, China 4.Department of Physics, Jining Teachers College, Jining 012000, China 5 Center of Theoretical nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China School of Science Huzhou Teachers College Huzhou 313000 China School of Science and Information Engineering Zhejiang Normal University Jinhua 321000 China institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 China Department of Physics Jining Teachers College Jining 012000 China Center of Theoretical nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou 730000 China

The nuclear shapes of 187,189Tl were investigated theoretically in this work. The total routhian surface (TRS) calculations were performed for N=106 and 108 isotopes of thallium (Z=81). The single-particle energies were obtained from the deformed Woods-Saxon potential, with the Lipkin-Nogami (LN) treatment of pairing. It is found that the collective oblate rotation coexists with the high-K prolate rotation. Superdeformed prolate rotation is included in this calculation.

关键词： nuclear shape oblate rotation prolate rotation

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