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Conceptual model about the interaction between El Nio/ Southern Oscillation and Quasi-Biennial Oscillation in far west equatorial Pacific

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Science China Earth Sciences 2006年第8期49卷 889-896页

作者： LIU Qinyu1, LIU Zhengyu2.1 & PAN Aijun 1,3 1. Physical Oceanography Lab. & Atmosphere-Ocean Interaction and Climate Lab., Ocean university of China, Qingdao 2.6003, China 2. center for Climate {2., university of Wisconsin-Madison, Madison, WI 53706-1695, USA 3. Environment and Dynamics Lab., Third Institute of Oceanography, Xiamen 361005, China 1. Physical Oceanography Lab. & Atmosphere-Ocean Interaction and Climate Lab. Ocean University of China Qingdao 266003 China 2. center for Climate research University of Wisconsin-Madison Madison WI 53706-1695 USA 3. Environment and Dynamics Lab. Third Institute of Oceanography Xiamen 361005 China

Interaction between the Quasi-Biennial Oscillation in far west equatorialPacific (QBOWP) and the El Nino/Southern Oscillation (ENSO) is studied using a new conceptual *** this conceptual model, the QBOWP effects on ENSO are achieved through two ways: (1) the oceanicKelvin wave along equatorial Pacific, and (2. the Atmospheric Walker Circulation anomaly, while ENSOeffects on QBOWP can be accomplished by the atmospheric Walker Circulation anomaly. Diagnosisanalysis of the model results shows that the Atmospheric bridge (Walker circulation) plays a moreimportant role in interaction between the ENSO and QBOWP than the oceanic bridge (oceanic Kelvinwave along equatorial Pacific); It is found that by the interaction of the ENSO and QBOWP, a freeENSO oscillation with 3-5 years period could be substituted by a oscillation with the quasi-biennialperiod, and the dominant period of SST anomaly and wind anomaly in the far west equatorial Pacifictends to be prolonged with enhanced ENSO forcing. Generally, the multi-period variability in thecoupled Atmosphere-Ocean System in the Tropical Pacific can be achieved through the interactionbetween ENSO and QBOWP.

关键词： El nino/southern oscillation quasi-biennial oscillation interaction coupled system kelvin wave walker circulation

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Hodograph computation and bound estimation for rational B-spline curves

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Progress in Natural Science:materials International 2007年第8期17卷 988-992页

作者： Xu Huixia~(1,2. Wang Guojin~(1,2.*) (1.Institute of Computer Images and Graphics,Zhejiang university,Hangzhou 31002.,China 2.State Key Laboratory of CAD&CG,Zhejiang university,Hangzhou 31002.,China) [a]Institute of Computer Images and Graphics Zhejiang University Hangzhou China [b]State Key Laboratory of CAD&CG Zhejiang University Hangzhou China

It is necessary to compute the derivative end estimate the bound of rational B-spline curves in design system,which has not been studied to *** improve the function of computer aided design (CAD) system,end to enhance the efficiency of different algo- rithms of rational B-spline curves,the representation of scaled hodograph and bound of derivative magnitude of uniform planar rational B- spline curves are derived by applying Dir function,which indicates the direction of Cartesian vector between homogeneous points,discrete B-spline theory end the formula of translating the product into a summation of B-spline *** an application of the result above, upper bound of parametric distance between any two points in a uniform planar rational B-spline curve is further presented.

关键词： computer aided design (CAD) rational B-spline discrete B-spline hodograph bound of derivative distance between two points

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Geochemistry and mineralogy of the Late Permian coals from the Songzao Coalfield, Chongqing, southwestern China

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Science China Earth Sciences 2007年第5期50卷 678-688页

作者： DAI ShiFeng1,2. ZHOU YiPing3, REN DeYi1, WANG XiBo1, 2. LI Dan1, 2.& ZHAO Lei1, 2.1 State Key Laboratory of Coal Resources and Safe Mining (China university of Mining and technology), Beijing 100083, China 2.Department of Resources and Earth Science, China university of Mining and technology, Beijing 100083, China 3 Kunming research Institute of Coal Science, Kunming 650041, China State Key Laboratory of Coal Resources and Safe Mining (China university of Mining and technology) Beijing 100083 China Department of Resources and Earth Science China University of Mining and Technology Beijing 100083 China Kunming research Institute of Coal Science Kunming 650041 China State Key Laboratory of Coal Resources and Safe Mining (China university of Mining and technology) Beijing 100083 China

Mineralogy and geochemistry of the four main workable coal seams (No.6, No.7, No.8, and No.11) of Late Permian age from the Songzao Coalfield, Chongqing, Southwest China, were examined using in- ductively coupled plasma-mass spectrometry (ICP-MS), X-ray fluorescence spectrometry (XRF), cold-vapor absorption spectrometry (CV-AAS), ion-selective electrode (ISE), scanning electron mi- croscopy equipped with an energy-dispersive X-ray spectrometer (SEM-EDX), and X-ray diffraction analysis (XRD). The results showed that the main workable No.8 Coal that accounts for about 60% of the total coal reserves in the Songzao Coalfield was not enriched in hazardous trace elements. The No.11 Coal has high concentrations of alkaline elements, Be (9.14 μg/g), Sc (12.9 μg/g), Ti (9508 μg/g), Mn (397 μg/g), Co (2..7 μg/g), Cu (108 μg/g), Zn (12. μg/g), Ga (32.μg/g), Zr (1304 μg/g), Nb (169 μg/g), Hf (32.7 μg/g), Ta (11.4 μg/g), W (2..8 μg/g), Hg (0.2. μg/g), Pb (2..1 μg/g), Th (2..1 μg/g), and rare earth elements (509.62.μg/g). The concentration of Nb and Ta in the No. 11 Coal is higher than the industrial grade, and their potential utilization should be further studied. Besides pyrite, quartz, calcite, and clay minerals, trace minerals including chalcopyrite, marcasite, siderite, albite, mixed-layer clay minerals of illite and smectite, monazite, apatite, anatase, chlorite, and gypsum were found in the No.11 Coal. It should be noted that alabandite of hydrothermal origin and anatase occurring as cement were identi- fied in coal. In addition, the clayey microbands derived from alkaline volcanic ashes were identified in the coal. The dominant compositions of these clayey microbands were mixed-layer clay minerals of illite and smectite, which were interlayered with organic bands. The modes of occurrence of alkaline volcanic ash bands indicate that the volcanic activities were characterized by the multiple eruptions, short time interval and small scale for each eruption during peat accumu

关键词： coal trace elements mineral alkaline volcanic ash Late Permian period Songzao Coalfield

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Luminosity-peak energy relation in the decay phases of gamma-ray burst pulses

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Science China(Physics,Mechanics & Astronomy) 2010年第1期53卷 163-170页

作者： LU RuiJing & LIANG EnWei Physical Science & technology College, Guangxi university, Nanning 530004, China 1. Physical Science & technology College Guangxi University Nanning 530004 China

Using time-resolved spectral data for a sample of 30 pulses in 2. bright GRBs detected with CGRO/BATSE, we investigate the luminosity-peak energy relation (L-E p relation) in the decay phases of these pulses. A tight L-E p relation is found for most of the pulses, but its power law index is various among pulses, which is normally distributed at 1.84±0.60(1σ) for the pulses in our sample, roughly consistent with the L-E p relation within a GRB and the isotropic gamma-ray energy-E p relation among GRBs. The large scatter of the power law index cannot be explained with both the statistical or observational effects and it may be an intrinsic feature, indicating that no universal L-E p relation would be expected among GRBs/pulses. This may strongly weaken the cosmological use of this relation.

关键词： gamma ray bursts observations statistical luminosity-peak energy relation

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Development of the Tube bender of Based on PCI-12.0

Development of the Tube bender of Based on PCI-1240

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2.10 The 2.d International Conference on Industrial Mechatronics and Automation (ICIMA 2.10)

作者： Zhang Zhiming Xu Qiao Mei Shunqi School of Electrical & Mechanical Engineering wuhan university of Science and Engineering wuhan City China

PCI-12.0 is a 4-axis motion control card based on PCI *** is suitable for tube bender controlling *** solve the problems of complexity in controlling and complicated operation in the conventional tube bender,a new multi-motor based on PCI-12.0 is *** the establishment of the instruction code,a multi-motor driving mechanism and the controlling of reading bending data are applied in the new tube bender,which employs three servo *** the three mechanisms controlling,the machine structure is *** tube quality is *** productivity is *** mechanical-electrical integration level of the tube bender is enhanced.

关键词： PCI-12.0 tube bender arc interpolation homing bending data

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STUDY ON ROTOR HEAD VIBRATION ABSORBER OF HELICOPTER

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Chinese Journal of Aeronautics 1994年第3期7卷 195-200页

作者： GuZhongquan PengFujun MaKougen(research Instituie of Vibration Eng, Nanj ing university ofAeronautics and Astronautics, Nanj ing, China, 2.10016)

Rotor Head Vibration Absorber (RHVA) is a new kind of vibration reduc-tion device for helicoper, which provides some advantages in applications. The mechan-ical model for analysing and designing such kind of device is presented, two analyticalmethods (in frequency domain and time domain) and its adaptabihty are studied. At thesame time the charactenstics of RHVA are analysed. The deduced rotor receptancesproved by model test are presented. At last the effectiveness of mechanical model andanalytical methods presented in this paper and of RHVA are illustrated in the calculation example.

关键词： helicopters rotor body interactions vibration isolators dynamic models

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Sr-Nd isotopic compositions of the Changjiang sediments: Implications for tracing sediment sources

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Science China Earth Sciences 2007年第10期50卷 1556-1565页

作者： YANG ShouYe1?, JIANG ShaoYong2. LING HongFei2. XIA XiaoPing3, SUN Min3 & WANG DeJie4 1 State Key Laboratory of Marine Geology, Tongji university, Shanghai 2.0092. China 2.State Key Laboratory for Mineral Deposit research, Nanjing university, Nanjing 2.0093, China 3 Departmen of Earth Sciences, The university of Hong Kong, Hong Kong SAR, China 4 Development research center, China Geological Survey, Beijing 100083, China 1. State Key Laboratory of Marine Geology Tongji University Shanghai 200092 China 2. State Key Laboratory for Mineral Deposit research Nanjing University Nanjing 210093 China 3. Department of Earth Sciences The University of Hong Kong Hong Kong SAR China 4. Development research center China Geological Survey Beijing 100083 China

The suspended particulate and fine-grained floodplain sediments were collected from the main stream and tributaries of the Changjiang River for Sr-Nd isotopic measurements. The εNd(0) values gradually decrease downstream from -10.8 on average in the upper reaches to -12.3 in the lower reaches, whereas the 87Sr/86Sr ratios increase correspondingly, averaging 0.72.899 and 0.72.82. respectively in the upper and middle-lower reaches. The compositional variations primarily reflect the complex con- trols of provenance rocks, chemical weathering, and sediment characters between different catchments, among which the abnormal Sr-Nd isotopic compositions of the Yalong, Fujiang, Tuojiang and Yuanjiang rivers indicate the sediment provenance contributions from the Emeishan Basalt in the upper reaches and the old metamorphic and siliceous rocks in the middle-lower reaches. The Sr-Nd isotopic ratios of the Changjiang sediments can better reflect the average composition of weathered continental crust compared to other major rivers in the world because of the unique source rock types in the Changjiang drainage basin. The recognition of the Sr-Nd isotopic systematics of the Changjiang sediments will contribute to our understanding of the Changjiang evolution history and continental weathering processes during the Cenozoic, and also to reconstructing the paleoenvironmental changes in East China and the marginal seas.

关键词： Sr-Nd isotopes, sediment, Changjiang River, source rock, provenance

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Time · Space · Architecture

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Science China(Technological Sciences) 2009年第9期52卷 2481-2485页

作者： QI Kang research Institute of Architecture, Southeast university, Nanjing 2.0096, China 1. research Institute of Architecture Southeast University Nanjing 210096 China

In the 2.th century a Swiss writer wrote a book titled Time, Space and Architecture, in which he discussed the relationship between architecture and the times. Fifty years after that, this paper adopts the same title, hoping to deepen the understanding of the space-time structure in architecture and contribute to the new exploration of architectural forms.

关键词： Space Time Architecture

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细胞黏附分子互作网络的构建与分析

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生物化学与生物物理进展 2011年第4期38卷 347-352页

作者：韦晓兰重庆工商大学环境与生物工程学院药物化学与化学生物学研究中心重庆400067

借助网络分析可对基因调控、蛋白质互作和信号转导等细胞活动进行全局和局部性质分析.以细胞黏附的蛋白质相互作用为对象,通过数据挖掘和可视化软件构建了整合蛋白介导的黏附分子互作网络,该分子互作网络由156种蛋白质通过690种相互作... 详细信息

借助网络分析可对基因调控、蛋白质互作和信号转导等细胞活动进行全局和局部性质分析.以细胞黏附的蛋白质相互作用为对象,通过数据挖掘和可视化软件构建了整合蛋白介导的黏附分子互作网络,该分子互作网络由156种蛋白质通过690种相互作用相连,其平均节点度为8.66、平均聚集系数为0.2.,平均路径长度为2.6.黏附分子互作网络中包含数个功能模块,这些模块涉及网络内部多种分子相互作用的启动与停止,并进一步影响细胞的黏附、迁移和骨架组织.对黏附分子网络进行模体筛选和比较,发现一些数量相对较少、以三元复合物为主要结构的关键模体,同时对各网络模块和模体对细胞黏附的调控作用进行了探讨.

关键词：蛋白质相互作用网络分析系统生物学黏附分子

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EXPERIMENTAL STUDY ON DAMAGE TOLERANCE BEHAVIOUR OF COMPOSITE PANELS WITH SOFTENING STRIPS

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Chinese Journal of Aeronautics 1990年第1期5卷 7-15页

作者： Shen Zhen and Liu Junshi Aircraft Strength research InstituteZhang Yanming and Tao MeizhenNorthwestern Polytechnical university Aircraft Strength research Inst

In this paper an experimental study on damage tolerance behaviour of composite panels with softening strips is carried out. A prediction method of residual strength of panels with softening strips is proposed. The comparison between estimated and experimental results shows that the prediction method can be applied to design. In this paper the failure mechanisms are described.

关键词： EXPERIMENTAL STUDY ON DAMAGE TOLERANCE BEHAVIOUR OF COMPOSITE PANELS WITH SOFTENING STRIPS mode

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