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Studies of mineral properties at mantle condition using Deformation multi-anvil apparatus

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Progress in Natural Science:Materials International 2009年第11期19卷 1467-1475页

作者： Li Li MPI,Department of Geosciences,Stony Brook university.Stony Brook,NY 11794,USA MPI Department of Geosciences Stony Brook University Stony Brook NY 11794 USA

This paper reports recent studies of the rheological and viscoelastic properties of minerals at mantle pressure and temperature using Deformation multi-anvil apparatus(D-DIA).Stress-strain-time relations were measured using synchrotron X-ray radiation to determine these *** properties of San Carlos olivine were measured at pressure up to 10 GPa and indicated that the effect of pressure on the viscosity of olivine is much smaller than previous *** unique capability of synchrotron X-ray can resolve the stress heterogeneity within a polycrystalline material as well as within a multi-phase mixture and elucidate the stress-strain distribution in an *** measurements were carried out using olivine as the sample at mantle pressure and *** results showed that grain boundary activity rather than pressure dominate the relaxation *** aim of this paper is to illustrate the methods using new tools for high pressure research.

关键词： High pressure Synchrotron X-ray Multi-anvil Plasticity Anelasticity

Data fusion techniques for incomplete measurement of trajectory

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Chinese Science Bulletin 2001年第8期46卷 627-630页

作者： ZHU JuboDepartment of Mathematics & System Science, National university.of Defense Technology, Changsha 410073, China Department of Mathematics & System Science National University of Defense Technology Changsha China

This paper focuses on data processing for incomplete measurement of trajectory (IMT) in aerospace measurement and control. The IMT means that the principal equipment loses the measured data during some intervals so that trajectory parameters (position, velocity, etc.) cannot be determined independently. Based on a joint model for trajectory estimation with reduced parameter, a fusion way is put forth by making full use of measured data from auxiliary equipment with lower precision. In the superposition intervals of measurement between principal and auxiliary equipment, the technique of diagnosing and estimating system errors is applied to improving the estimate precision of trajectory parameters (TP) and determining the precision after data fusion. In practical test, this method operates so successfully that it can not only provide complete TP but improve their precision remarkably. Meanwhile, this way is also applicable to other problems of incomplete measurement.

关键词： incomplete measurement of trajectory data fusion re- duced parameter model error diagnose.

Digital Rights Management：Model,Technology and Application

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China Communications 2017年第6期14卷 156-167页

作者： Zhaofeng Ma School of Cyberspace Security Beijing University of Posts and Telecommunications Beijing 100876 China

with rapid achievement of current information technology and computing ability and applications,much more digital content such as films,cartoons,design drawings,office documents and software source codes are produced in daily work,however to protect the content being copying,shared or deliberately stolen by inside or outside,digital rights management(DRM) became more and more important for digital content *** this paper,we studied various DRM model,technology and application,and first proposed DRM Security Infrastructure(DSI),in which we defined encryption,hash,signature algorithm,watermarking algorithms,authentication,usage control,trusted counter,conditional trace,secure payment,and based on the DSI we then proposed a whole classification approach and architecture of all kinds of DRMs,in which we proposed 6 typical classes of copyrights and content protection DRMs architecture:(1) Software-oriented DRM,(2) e Book-oriented DRM,(3) Video-oriented DRM,(4) Image-Oriented DRM(5) Unstructured data oriented DRM,(6) Text-oriented *** on the above DSI,we then proposed a dynamic DRM model selection method for various DRM application,which can be adapted dynamically for different technology of different applications,which can provide awhole solution for variant DRM development in a rapid and customized *** proposed DRM method,technology and application in this paper provided a common,flexible and extendable solution for variant DRM scenes,and can support rapid and customized ***,we proposed an opinion that the future life will enter into a new era that the content usage and consumption will not again adopt DRM technology rather than with law,liberty and morality.

关键词： digital rights management drm security infrastructure encryption watermark usage control drm-free

INFORMATION DESIGN OF UNIVERSAL ADJUSTMENT PROGRAM OF PLANE CONTROL NETWORKS

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中国有色金属学会会刊：英文版 1994年第2期4卷 95-97,102页

作者： Xiang,Nanping(Department of Resources Exploitation Engineering,Central South university.of Technology,Changsha 410083)

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ＩＮＦＯＲＭＡＴＩＯＮＤＥＳＩＧＮＯＦＵＮＩＶＥＲＳＡＬＡＤＪＵＳＴＭＥＮＴＰＲＯＧＲＡＭＯＦＰＬＡＮＥＣＯＮＴＲＯＬＮＥＴＷＯＲＫＳＩＮＦＯＲＭＡＴＩＯＮＤＥＳＩＧＮＯＦＵＮＩＶＥＲＳＡＬＡＤＪＵＳＴＭＥＮＴＰＲＯＧＲＡＭＯＦＰＬＡＮＥＣＯＮＴＲＯ...

关键词： information design universal adjustment plane control networks

Effect of Bcl-2 and caspase-3 on calcium distribution in apoptosis of HL-60 cells

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Cell Research 2000年第3期10卷 213-220页

作者： ZHANG MIN, HONG QING ZHANG, SHAO BAI XUE (Department of Biology, Beijing Normal university. Beijing 100875, China) Department of Biology Beijing Normal University Beijing China

Apoptosis manifests in two major execution programs downstream of the death signal: the caspase pathway and organelle dysfunction. An important antiapoptosis factor, Bcl-2 protein, contributes in caspase pathway of apoptosis. Calcium, an important intracellular signal element in cells, is also observed to have changes during apoptosis, which maybe affected by Bcl-2 protein. We have previously reported that in Harringtonine (HT) induced apoptosis of HL-60 cells, there’s a change of intracellular calcium distribution, moving from cytoplast especially Golgi’s apparatus to nucleus and accumulating there with the highest concentration. We report here that caspase-3 becomes activated in HT-induced apoptosis of HL-60 cells, which can be inhibited by overexpression of Bcl-2 protein. No sign of apoptosis or intracellular calcium movement from Golgi’s apparatus to nucleus in HL-60 cells overexpressing Bcl-2 or treated with Ac-DEVD-CHO, a specific inhibitor of caspase-3. The results indicate that activated caspase-3 can promote the movement of intracellular calcium from Golgi’s apparatus to nucleus, and the process is inhibited by Ac-DEVD-CHO (inhibitor of caspase-3), and that Bcl-2 can inhibit the movement and accumulation of intracellular calcium in nucleus through its inhibition on caspase3. Calcium relocalization in apoptosis seems to be irreversible, which is different from the intracellular calcium changes caused by growth factor.

关键词： Apoptosis calcium caspase-3 bcl-2 laser scanning confocal microscopy (LSCM).

ADSORPTION MECHANISMS OF HS-IONS ON SULPHIDE MINERAL SURFACES RELATED TO Na_2S-INDUCED FLOTATION

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中国有色金属学会会刊：英文版 1993年第3期3卷 20-26页

作者： Sun, Shuiyu Wang, Dianzuo Li, Bodan Central-South university.of Technoloyy, Changsha 410083, China

The adsorption mechanisms of HS- ions existing in air-saturated alkaline solutions on sulphide minerals （including pyrite, arsenopyrite, chalcopyrite and galena） were investigated. The measurement of adsorption density, solvent extraction-chemical analysis of neutral sulphur at the surfaces, measurements of pulp potential and voltammogram, and flotation tests were done. Both the electrochemical and non-electrochemi cal adsorption models of HS- ions were established. The former was observed and resulted in the formation of neutral sulphur （S°）when the pyrite and arsenopyrite were chosen, and hence renders the surfaces hy drophobic and induced the two minerals flotation. It is called Na2S-induced flotation. On the other hand, the latter took place and did not produce S° when the chalcopyrite and galena were selected, and hence de presses the collectorless flotation of the two minerals. The adsorptions of HS- ions were mainly influenced by potentials, pH and the electron structures of the mineral surfaces.

关键词： HS- adsorption sulphide minerals Na2S-induced flotation

On Minimal Graph Evolutions in the Hyperbolic Space

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Acta Mathematica Sinica,English Series 1999年第3期15卷 371-374页

作者： Li Ma Department of Applied Mathematics, Tsinghua university. Beijing 100084, P. R. China Department of Applied Mathematics Tsinghua University Beijing P. R. China

We study here minmal graph evolutions in the hyperbolic space and prove that there exists a unique smooth solution.

关键词： Minimal graph evolution Apriori estimate

ELASTO-PLASTIC STIFFNESS MATRIX OF ROCK MASS ELEMENT WITH SOFT CLAY STRATA AND ITS APPLICATION

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中国有色金属学会会刊：英文版 1993年第2期3卷 15-17页

作者： Li,Zhenzi Sun,Zongqi Central-South university.of Technology,Changsha,Hunan,410083,China

The fault element is used to handle soft clay strata in a rock *** formulas or clasto-plastic stiffnessmatrix for the fault element are derived using the constitutive relationship between plastic increment stress ands... 详细信息

关键词： rock mass clement fault clasto-plastic stiffness matrix

Analyses　of　the　Properties　of　Tunable　Faraday　Anomalous　Dispersion　Optical　Filter　at　589nm

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Chinese Journal of Lasers 1995年第1期B4卷 65-71页

作者： PENG Yufeng LI Xuexin(Dept.of Physics,Henan Normal university.Xinxiang 453002, China)ZHANG Liang TANG Junxiong WANG Qingji(Dept.of Rodio-Electronics,Beijing university.Beijing 100871,China) Henan Normal Univ Xinxiang China

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ＡｎａｌｙｓｅｓｏｆｔｈｅＰｒｏｐｅｒｔｉｅｓｏｆＴｕｎａｂｌｅＦａｒａｄａｙＡｎｏｍａｌｏｕｓＤｉｓｐｅｒｓｉｏｎＯｐｔｉｃａｌＦｉｌｔｅｒａｔ５８９ｎｍＡｎａｌｙｓｅｓｏｆｔｈｅＰｒｏｐｅｒｔｉｅｓｏｆＴｕｎａｂｌｅＦａｒａｄａｙＡｎｏｍａｌｏｕ...

关键词： Faraday rotation effect anomalous dispersion atomic resonance filter