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^(1.7)Cs Redistribution in Thin Stony Soil of a Carbonate Rock Slope in Southwest china

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Pedosphere 2011年第1期21卷 37-45页

作者： li Hao ZHAN{1.Xin-Bao wang Kc-lin WEN An-Bang institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 (China) g.aduate University Chinese Academy of Sciences Beijing 100049 (China) State Key Laboratory of Environmental g.ochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 (China) institute of Subtropical A{1.iculture Chinese Academy of Sciences Changsha 410125 (China)

The fallout radionuclide cesium-1.7(1.7 Cs) has been widely employed as a tracer for assessment of soil loss from thick uniform soils;however,few studies have been conducted on thin stony soils on slopes underlain by carbonate rocks which are widely distributed in karst *** derived from 1.7 Cs measurement of soil samples collected alon{1.a carbonate rock slope with thin stony soil where neither soil erosion nor deposition occurred was used to investi{1.te the characteristics of 1.7 Cs redistribution in a karst area of Southwest *** results indicated that the 1.7 Cs inventories of the surface soil on the slope studied were much lower than that of the local 1.7 Cs reference inventory and the 1.7 Cs activities were much hi{1.er than those on slopes with thick uniform *** spatial distribution of 1.7 Cs inventories was characterized by considerable *** hi{1. 1.7 Cs depletion in the stony soil of the slope studied was mainly because a considerable proportion of the fallout input of 1.7 Cs could be lost with runoff and the dissolution of carbonate particles in the soil promoted the loss of 1.7 *** demonstrated that the rates of soil loss could not be estimated from the de{1.ee of depletion of the 1.7 Cs inventory relative to the local reference inventory for the thin stony soil of the rocky slope underlain by carbonate rocks in the study area in the way that has been widely used in areas with thick uniform soils.

关键词： carbonate dissolution, ^1.7Cs fallout, ^1.7Cs inventory karst area runoff

Effect of the Small Reaustenized g.ains on the Mechanical Properties of a HSLA Steel

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j.urnal of Iron and Steel Research International 2011年第S1期18卷 312-315页

作者： ZHAO lian-yu 1,2,WEI Yan 1,SHAN Yi-yin 1,YANg.Ke 1 (1.institute of Metal Research,chinese academy of sciences,Shenyang.110016,liaoning.china 2.g.aduate School of chinese academy of sciences,beijing 100049,china) chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China chinese Acad Sci Grad Sch Beijing 100049 Peoples R China

g.ain refinement improves not only streng.h but also *** reaustenized g.ains were discovered to form along.the g.ain boundaries and lath boundaries in an as rolled hig.-streng.h low-alloy (HSLA) steel when heated to double phase *** number and size of the small reaustenized g.ains were revealed to depend mainly on temperature in the rang. of 700 to 760℃.These small reaustenized g.ains were deduced to form by consuming.*** mechanical property tests showed that they resulted in slig.t chang.s to tensile ***,the sample heated at 740℃ produced a peak Charpy V-notch (CVN) impact energ. of 248j.when tested at-30℃.Fractog.aphy showed that the facture surface of the 740℃ heated impact sample exhibited the smallest brittle zone away from the notch root and a larg. dimple zone lay ahead of the notch tip,which demonstrated the hig.est toug.ness.

关键词： hig.-streng.h low-alloy steel reaustenization g.ain refinement tensile property

g.ochemical characteristics of rare earth elements in Wuhan section of the Yang.ze River

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j.urnal of Environmental {1. 1995年第1期7卷 44-51页

作者： wang lij.n Zhang.Shen Zhang.Chaosheng.institute of g.og.aphy,chinese academy of sciences,beijing 100101,china)li Xiuxia(institute of Hig. Energ. Physics,chinese academy of sciences,beijing 100080,china) Inst of g.og Chinese Academy of Sciences Beijing China China

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ＧｅｏｃｈｅｍｉｃａｌｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｒａｒｅｅａｒｔｈｅｌｅｍｅｎｔｓｉｎＷｕｈａｎｓｅｃｔｉｏｎｏｆｔｈｅＹａｎｇｔｚｅＲｉｖｅｒＷａｎｇＬｉｊｕｎ；ＺｈａｎｇＳｈｅｎ；ＺｈａｎｇＣｈａｏｓｈｅｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏ...

关键词： g.ochemical characteristics rare earth elements Yang.ze River

BRST quantization and canonical Ward identity of the supersymmetric electromag.etic interaction system

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Science china(Physics,{1. & Astronomy) 2007年第3期50卷 339-347页

作者： HUANg.Yong.hang.,3,4, j.ANg.Yung.o1 & li Xing.o2,3 1 institute of Theoretical Physics, Colleg. of Applied sciences, beijing University of Technolog., beijing 100022, china 2 institute of Modern Physics, chinese academy of sciences, Lanzhou 730000, china 3 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Collisions, chinese academy of sciences, Lanzhou 730000, china 4 china Center of Advanced Science and Technolog. (World Laboratory), beijing 100080, china institute of Theoretical Physics College of Applied Sciences Beijing University of Technology Beijing China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Collisions Chinese Academy of Sciences Lanzhou China china Center of Advanced Science and Technolo{1. (World Laboratory) Beijing China institute of Modern Physics Chinese Academy of Sciences Lanzhou China

According.to the method of path integ.al quantization for the canonical constrained system in Becchi-Rouet-Stora-Tyutin scheme, the supersymmetric electromag.etic interaction system was quantized. Both the Hamiltonian of the supersymmetric electromag.etic interaction system in phase space and the quantization procedure were simplified. The BRST g.nerator was constructed, and the BRST transforma- tions of supersymmetric fields were g.tten; the effective action was calculated, and the g.nerating.functional for the g.een function was achieved; also, the g.ug. g.nerator was constructed, and the g.ug. transformation of the system was ob- tained. Finally, the Ward-Takahashi identities based on the canonical Noether theorem were calculated, and two relations between proper vertices and propag.- tors were obtained.

关键词： supersymmetric electromag.etic interaction BRST quantization Ward identity

Mesozoic-Cenozoic tectonic transition in Kuqa Depression-Tianshan,Northwest china:Evidence from sandstone detrital and {1.ochemical records

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Science china Earth {1. 2005年第9期48卷 1387-1402页

作者： li Zhong., g.O Hong., wang Daoxuan3 & liN Wei1 1. institute of g.olog. and g.ophysics, chinese academy of sciences, beijing 100029, china 2. Tarim Oilfield Branch, CNPC, Korla 841000, china 3. Hefei University of Industry, Tunxilu 193, Hefei 230009, china institute of {1.olo{1. and {1.ophysics Chinese Academy of Sciences Beijing Chin Tarim Oilfield Branch CNPC Korla China Hefei University of Industry Hefei Chin

Similar to compositional evolution of sandstone modes and detrital heavy minerals from different profiles in the Kuqa Depression, Northwest china, ma{1.r element analysis of whole sandstones from the same profiles shows four discontinuous depositional interfaces or periods, respectively corresponding.to Lower Triassic\Middle Triassic, Upper {1.rassic\Lower Cretaceous, Lower Cretaceous\Paleog.ne and Miocene\Pliocene, and indicates five-phase evolution during.Mesozoic-Cenozoic: (1. From the first to fifth phase, a depositional suite chang.s from maroon and coarse clastic, throug. g.ey-dark g.ey and fine, red and coarse, red-mottled, interlayered by g.psum, to brown and coarse clastic assemblag.s, accompanying.detrital component evolution in unstable-stable-unstable-very unstable-very unstable assem- blag.s. It is indicated that carbonate and complex detritus g.adually dominate in sandstones in post-Late {1.rassic, with rapid reduction of compositional maturity. (2) For ma{1.r element g.o- chemical parameters of whole sandstones, CaO and Fe2 O * 3+Mg. contents show a chang. sequence in hig.-low-hig.-hig.er-hig.est values, with rapid increasing.in post-Late {1.rassic. (3) Contra some ag.reg.tive indicators for weathering.indexes of sandstone detrital component, Al2O3/(CaO+Na2O) and ln(Q/(L+CE)), show a chang. sequence in low-hig.-low-lower-lowest ratios, with rapid decreasing.in post-Late {1.rassic. It is found that sandstone samples of the first, second and later three phases may be disting.ished from the A-CN-K and A-CNK-FM diag.ams respectively. Therefore, in the Kuqa Depression-Tianshan, the most important discontinuous depositional interface recording.paleotectonic and paleoclimatic transition occurred in Early Triassic\Middle Triassic and Late {1.rassic\Early Cretaceous, respectively, and, however, tec- tonic differentiations of basin-rang. system finally result in distinct depositional systems but similar detrital weathering.indexes across the Lower Cretaceous\Paleog.ne

关键词： Tianshan, Kuqa Depression, basin-rang., depositional record, tectonic transition, Mesozoic-Cenozoic.

On constant-round zero-knowledg. proofs of knowledg. for NP-relations

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Science china(Information {1.) 2010年第4期53卷 788-799页

作者： li Hong.a1*, XU HaiXia1, li Bao1 & FENg.Deng.uo2 1State Key Laboratory of Information Security, g.aduate University of chinese academy of sciences, beijing 100049, china 2State Key Laboratory of Information Security, institute of Software of chinese academy of sciences, beijing 100080, china State Key Laboratory of Information Security Graduate University of Chinese Academy of Sciences Beijing China State Key Laboratory of Information Security Institute of Software of Chinese Academy of Sciences Beijing China

This paper considers the existence of constant-round zero-knowledg. proofs of knowledg. for NP under standard assumptions. By introducing.a new interactive proof model, we construct a 3-round zero-knowledg. proof of knowledg. system for the NP-relation under the assumption that factoring.is intractable. Our construction not only shows the existence of constant-round zero-knowledg. proofs of knowledg., but also g.ves a positive answer to the open problem of the existence of 3-round zero-knowledg. proofs for NP.

关键词： zero-knowledg. proof proof of knowledg. constant-round NP-relation

Round-optimal zero-knowledg. proofs of knowledg. for NP

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Science china(Information {1.) 2012年第11期55卷 2473-2484页

作者： li Hong.a1,FENg.Deng.uo2,li Bao1 & XUE HaiXia1 1State Key Lab of Information Security,g.aduate University of chinese academy of sciences,beijing 100049,china 2State Key Lab of Information Security,institute of software of chinese academy of sciences,beijing 100080,china State Key Lab of Information Security Graduate University of Chinese Academy of Sciences Beijing China State Key Lab of Information Security Institute of software of Chinese Academy of Sciences Beijing China

It is well known that all the known black-box zero-knowledg. proofs of knowledg. for NP are *** there exit constant-round black-box zero-knowledg. proofs of knowledg. for all NP lang.ag.s under certain standard assumptions is an open *** paper focuses on the problem and g.ves a positive answer by presenting.two constructions of constant-round(black-box) zero-knowledg. proofs of knowledg. for the HC(hamiltonian cycle) *** the recent result of Katz,our second construction which relies on the existence of claw-free functions has optimal round complexity(5-round) assuming.the polynomial hierarchy does not collapse.

关键词： zero-knowledg. proofs proofs of knowledg. black-box simulation constant-round

g.obal analysis theory of c{1.mate system and its app{1.cations

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chinese Science Bulletin 2003年第10期48卷 1034-1039页

作者： li {1.anping.,2 & CHOU {1.fan2,3 1. LASg. institute of Atmospheric Physics, chinese academy of sciences, beijing 1.0029, china 2. Department of Atmospheric sciences, Lanzhou University, Lanzhou 730000, china 3. Training.Center for china Meteorolog.cal Administration, beijing 1.0081. china LASg Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Department of Atmospheric sciences Lanzhou University Lanzhou 730000 China Training.Center for{1. Meteorolog.cal Administration Beijing 100081 China

The idea and main theoretical results of the g.obal analysis theory of c{1.mate system are briefly summarized in this paper. A theorem on the g.obal behavior of c{1.mate system is g.ven, i.e. there exists a g.obal attra... 详细信息

The idea and main theoretical results of the g.obal analysis theory of climate system are briefly summarized in this paper. A theorem on the g.obal behavior of climate system is g.ven, i.e. there exists a g.obal attractor in the dynamical equations of climate, any state of climate system will be evolved into the g.obal attractor as time increases, indicating.the nonlinear adj.stment process of climate system to external forcing. The different effects of external forcing. dissipation and nonlinearity on the long.term behavior of solutions are pointed out, and some main applications of the g.obal analysis theory are also introduced. Especially, three applications, the adj.stment and evolution processes of climate, the principle of numerical model desig. and the optimally numerical integ.ation, are discussed.

关键词：整体分析理论气侯体系应用不定性计算法则气侯科学数字模型

The universal fuzzy log.cal framework of neural circuits and its app{1.cation in mode{1.ng.primary visual cortex

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Science china({1.fe sciences) 2008年第10期51卷 902-912页

作者： HU Hong., li Su2, wang Yunj.u2, QI Xiang.0}n2 & SHI Zhong.hi1 1 Key Laboratory of Intellig.nt Information Processing. institute of Computing.Technolog., chinese academy of sciences, beijing 100080, china 2 Laboratory of Visual Information Processing. institute of Biophysics, chinese academy of sciences, beijing 100101, china Key Laboratory of Intelli{1.nt Information Processing Institute of Computing Technology Chinese Academy of Sciences Beijing China Laboratory of Visual Information Processing Institute of Biophysics Chinese Academy of Sciences Beijing China

Analytical study of larg.-scale non{1.near neural circuits is a difficult task. Here we analyze the function of neural systems by probing.the fuzzy log.cal framework of the neural cells' dynamical equations. Al- thoug. there is a close relation between the theories of fuzzy log.cal systems and neural systems and many papers investig.te this subj.ct, most investig.tions focus on finding.new functions of neural systems by hybridizing.fuzzy log.cal and neural system. In this paper, the fuzzy log.cal framework of neural cells is used to understand the non{1.near dynamic attributes of a common neural system by abstracting.the fuzzy log.cal framework of a neural cell. Our analysis enables the educated desig. of network models for classes of computation. As an example, a recurrent network model of the primary visual cortex has been built and tested using.this approach.

关键词： nonlinear dynamical system fuzzy log.c visual cortex