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Continental Dynamics 1996年第2期 134-138+138+140-145页

作者： Shen Kun(Shandong Institute of Geological sciences, Jinan 2.0013. china)Xu Zhiqin Xu Huifen and Zhang Jianxin(Institute of Geology {2. academy of Geological sciences, beijing 10003.. china)

ＣｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆＭｅｔａｍｏｒｐｈｉｃＦｌｕｉｄｓｉｎＺｏｕｌａｎｇＮａｎｓｈａｎＣａｌｅｄｏｎｉａｎＡｃｃｒｅｔｉｏｎａｒｙＳｕｂｄｕｃｔｉｏｎＣｏｍｐｌｅｘｉｎＮｏｒｔｈｅｒｎＱｉｌｉａｎＭｏｕ... 详细信息

ＣｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆＭｅｔａｍｏｒｐｈｉｃＦｌｕｉｄｓｉｎＺｏｕｌａｎｇＮａｎｓｈａｎＣａｌｅｄｏｎｉａｎＡｃｃｒｅｔｉｏｎａｒｙＳｕｂｄｕｃｔｉｏｎＣｏｍｐｌｅｘｉｎＮｏｒｔｈｅｒｎＱｉｌｉａｎＭｏｕｎｔａｉｎｓ￥ＳｈｅｎＫｕｎ（Ｓｈ...

关键词： subduction complex fluid inclusion

The Chemistry of Hainanensine Derivatives

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有机化学 1993年第2期13卷 195-198页

作者： GUO Ji-Yu YIN Da-Li GAO You-Song LIU Da-Kuan LIANG Xiao-Tian Institute of Materia Medica, chinese academy of Medical {2., 100050 {3. 中国医学科学院药物研究所

Hainanensine(1) and its analog 6 were obtained through intramolecular regiospecific cycliza-tion. Reduction of 6 under different conditions gave 7～12. The stereochemistry was established bychemical correlation, spect... 详细信息

关键词： hainanensine stereochemistry mechenism

A STRONG RESONANCE PROBLEM

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chinese Annals of Mathematics,Series B 1990年第2期11卷 191-210页

作者：张恭庆刘嘉荃 Institute of Mathematics Beijing University Department of Mathematics Graduate School Academia Sinica Beijing China.

Consider a functional f(x, v)=(Ax, x)/2.G(x, v), defined on a product space H×V. where H is a Hilbert space and V is a compact manifold. Suppose that the linear part (Ax, x) is at resonance. In this paper, the strong resonance problem is studied in the variational approach, the existence of at least, cuplength V+1 critical points of f is proved. The abstract theorems are then applied to the existence problems of solutions for elliptic boundary value problems and Hamiltonian systems.

关键词： manifold variational neighborhood Hamiltonian elliptic invar hough uniformly verified looking

维普期刊数据库

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模糊影响图评价算法的探讨

系统工程学报 2004年第2期19卷 177-182页

作者：程铁信王平张伟波中国科学院系统科学研究所北京100080 加拿大阿尔伯塔大学土木与环境工程系中国华电集团公司北京100035

模糊影响图是进行风险分析与评价的一种较新的方法,因其直观性和易于理解而受到欢迎,论文就可用于工程项目风险分析的模糊影响图评价算法中存在的问题进行了探讨,研究并改正了其评价算法,最后,通过一个算例,详细说明了改正后的评价算法.

关键词：模糊影响图风险分析风险评价算法模糊理论模糊集工程项目

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LATE MIOCENE FOSSIL MAMMALS FROM GYIRONG BASIN, TIBET

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LATE MIOCENE FOSSIL MAMMALS FROM GYIRONG BASIN, TIBET

INFLUENCE OF CHAMBER GEOMETRY ON VAPOR DIFFUSIONPROTEIN CRYSTALLIZATION

第二届国际古生物学大会

作者： Zhaoqun ZHANG Institute of Vertebrate Palaeontology and Palaeoanthropology, chinese academy of {2., {3. 100044, china.

To understand the evolutionary history of Neogene climatic and environmental changes in East Asia, the uplift of the Tibet Plateau should be one of the most important issues. Numerous papers have been published in recent decades on this issue. The most frequently cited evidence of fossil mammals from Tibet is from the Gyirong basin (Ji et al., 1980).

关键词： the Tibet Plateau mammals Late Miocene habitat

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INFLUENCE OF CHAMBER GEOMETRY ON VAPOR DIFFUSIONPROTEIN CRYS...

Structures of rare earth-transition metal rich compounds derived from CaCu5 type

5th china-Japan Workshop on Microgravity sciences

作者： Meng-En CHEN Huai-Xing GANGInstitute of Biophysics chinese academy of {2. {3. 100101 china

＜正＞ To study the influences of the geometric factors of the growth chamber on the protein crystallization is of great significance. It is often found that the devices used to study the crystallization mechanisms have different chamber geometry. This would decrease the comparability among the results. On the other hand, porting the ground experimental conditions to the space experiments and even optimizing the crystal growth would be benefit from this study.

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Progress in Natural Science:Materials International 2002年第1期 3-11页

作者： LIANG Jingkui, CHEN Xiaolong, LIU Quanlin, and RAO Guanghui( Institute of Physics and Center for Condensed Matter Physics, chinese academy of {2., {3. 100080, Chin International Center for Materials Physics, chinese academy of {2., Shenyang 110015, china) Institute of Physics and Center for Condensed Matter Physics Chinese Academ y of Sciences，Beijing 100080，China International Center for Materials Ph ysics，chinese academy of {2.，Shenyang 110015，{3. Institute of Physics and Center for Condensed Matter Physics Chinese Academ y of Sciences，Beijing 100080，China

The properties of materials have a close connection to their crystal structures. Rare earth (R)-transition metal (T) rich compound are the focus of investigation in the search for new hard magnetic materials. As the basis for the study of stabilized effect of the third component on the formation of RT5 derivative and its influence of the occupied sites on magnetic properties, in this paper, the possible derivative compounds based on the RT5 primitive unit cell of the CaCu5 structure type formed through the ordered or disordered substitution of dumbbell pair 2. atoms for the R atoms at some sites, and the structural relationship between the derivatives and the prototype are summarized.

关键词： CaCu5 type structure derivative compounds crystal structure.

An overview of resistive random access memory devices

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Science Bulletin 2011年第Z2期 3072-3078页

作者： LI YingTao 1,2., LONG ShiBing 2., LIU Qi 2., Lü HangBing 2., LIU Su 1 & LIU Ming 2. 1 School of Physical Science and Technology, Lanzhou University, Lanzhou 73.000, china 2.Laboratory of Nano-Fabrication and Novel Device Integration, Institute of Microelectronics, chinese {2. of sciences, beijing 10002., china

With recent progress in material science, resistive random access memory (RRAM) devices have attracted interest for nonvolatile, low-power, nondestructive readout, and high-density memories. Relevant performance parameters of RRAM devices include operating voltage, operation speed, resistance ratio, endurance, retention time, device yield, and multilevel storage. Numerous resistive-switching mechanisms, such as conductive filament, space-charge-limited conduction, trap charging and discharging, Schottky Emission, and Pool-Frenkel emission, have been proposed to explain the resistive switching of RRAM devices. In addition to a discussion of these mechanisms, the effects of electrode materials, doped oxide materials, and different configuration devices on the resistive-switching characteristics in nonvolatile memory applications, are reviewed. Finally, suggestions for future research, as well as the challenges awaiting RRAM devices, are given.

关键词： resistive random access memory resistive switching performance parameters

Transitions among Mariana-,Japan-,Cordillera-and Alaska-type are systems and their final juxtapositions leading to accretionary and collisional orogenesis

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Transitions among Mariana-,Japan-,Cordillera-and Alaska-type...

Temporal-spatial characteristics of vegetation cover and desertification of china by using remote sensing data

中国科学院地质与地球物理研究所第十届(2.10年度)学术年会

作者： WENJIAO XIAO~(1*),CHUNMING HAN~1,CHAO YUAN~2.MIN SUN~3. GUOCHUN ZHAO~3.& YEHUA SHAN~2.1 State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics, chinese {3. of {2.,beijing 10002.,china 2.Guangzhou Institute of Geochemistry,chinese {3. of {2.,Guangzhou 510640,china 3.Department of Earth {2.,The University of Hong Kong,Hong Kong,china

’Arc system’ is used here as a collective term for a variety of arcs that occur along continental margins or in oceanic plates;it includes associated units from adjacent *** major arc systems(Mariana-,Japan-,Cordillera-and Alaska-type)can be distinguished along the Circum-Pacific *** Japan-type arc systems in ancient orogens(*** Altaids) may have been largely regarded as microcontinents because they have so-called Precambrian basement. Often the Cordillera-type arc systems can be very complicated,and if they are rifted away from the host continent they become more difficult to *** these arc systems interact mutually and with continental marginal sequences,leading to complicated accretionary and colhsional *** alternation between Western Pacific archipelagos and the Eastern Pacific active margin is the stereotype of accretionary and colhsional *** importantly, these four main types of arc systems can be juxtaposed into a final orogenic collage, which is another main expression of accretionary *** some parts of accretionary and colhsional orogens can be terminated by attachment of a continent-size craton such as Tarim or even India,and even so the accretionary and colhsional processes may continue elsewhere along *** significance of the interactions among these arc systems and their final juxtaposition has not been fully appreciated in ancient *** Altaids together with the Circum-Pacific orogens offers a good opportunity to study such accretionary-collisional orogenesis.

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Progress in Natural Science:Materials International 2002年第1期 47-51+83页

作者： XU Xingkui , LIN Zhaohui, LI Jianping and ZENG Qingcun(LASG, Institute of Atmospheric Physics, chinese academy of {2., {3. 10002., china) LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

Based on the NOAA advanced very high resolution radiometer (NOAA-AVHRR) remote sensing data of 1982.- 1999, the normalized difference vegetation index (NDVI) reflecting the surface vegetation cover has been obtained. Using the empirical orthogonal function analysis, the temporal-spatial eigenvectors of NDVI are given, and the characteristics of the spatial distribution of vegetation cover and its temporal variation together with the desertification of china are analyzed. It is found that the surface vegetation cover has seriously deteriorated in most part of china since 1995, along with the intensified desertification. All these are mainly caused by human activities although the climate change is responsible for the damage of surface vegetation cover to some extent.

关键词： remote sensing surface vegetation cover empirical orthogonal function normalized difference vegetation index.