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Petrology, Metamorphic Process and Genesis of The Dabie--Sulu Eclogite Belt, Eastern--Central china

Acta Geologica Sinica(English Edition) 1996年第2期70卷 134-156页

作者： Zhang Zeming You Zhendong Han Yujing and Sang Longkang Department of Earth sciences, china university of Geosciences, Wuhan, Hubei Department of Earth sciences China University of Geosciences Wuhan Hubei

The Qinling-Dabie-Sulu high-pressure and ultra-high pressure metamorphic belt wasformed by subduction and collision between the North china and Yangtze plates. The study ofthe eclogite belt is very important in understanding the evolution of the Qinling Dabie orogen. Inthe present paper the geology, petrology, minerology and chronology of the eclogites in the Dabieand Sulu areas are described. The principal conclusions of this work are as follows: (1) Based up-on the field occurrence and the P-T conditions of the eclogites, two types of eclogite can be dis-tinguished: Type 1—the low-temperature and high-pressure eclogite in the mid-late Proterozoicmetamorphic series, and Type 2—the ultra-high pressure eclogite in the late Archaean to earlyProterozoic metamorphic complex. In the Dabie area, the ultra-high-pressure eclogite,high-pressure eclogite and epidote-blueschist units are nearly parallel to each other and stretchintermittently from north to south. (2) The P-T conditions of the high-pressure eclogites and ul-tra-high pressure eclogites have been estimated. The former are formed at 450-550℃ and1.4-1.6 GPa; while the latter at 650-870℃ and >2.7-2.9 GPa in the Dabie area and at820-1000℃ and >2.8-3.1 GPa in the Sulu area. The metamorphic temperatures of the eclogitesincrease progressively from west to east. (3. The ultra-high pressure eclogites were subjected to 5stages of metamorphism: pre-eclogite epidote amphibolite facies, peak coesite eclogite facies,post-eclogite amphibolite facies, epidote-blueschist facies or epidote amphibolite facies andgreenschist facies. The general features of the PTt path of the ultra-high pressure eclogite are:clockwise pattern, progressive metamorphism being a process of slow increasing temperature andrapid increasing pressure, and the retrogressive section with nearly isothermal decompression atthe early stage, isobaric cooling at the middle stage and nearly isothermal decompression at thelate stage. (4) At least two stages of high-

关键词： petrology mineral chemistry chronology PTt—path Dabie—Sulu eclogite belt east—central china

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A New Kind of Simple Smooth Exact Penalty Function of Constrained Nonlinear Programming

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Journal of Shanghai university(English Edition) 2001年第4期5卷 287-291页

作者： SUN Chu ren, ZHANG Lian sheng College of sciences, Shanghai university, Shanghai 200072, china College of sciences Shanghai University Shanghai China

The penalty function method is one basic method for solving constrained nonlinear programming, in which simple smooth exact penalty functions draw much attention for their simpleness and smoothness. This article offers a new kind of simple smooth approximative exact penalty function of general constrained nonlinear programmings and analyzes its properties.

关键词： exact penalty function MFCQ constrain condition

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Estimation of net primary productivity in china using remote sensing data

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Journal of Geographical sciences 2001年第1期11卷 14-23页

作者： SUN Rui, ZHU Qi-jiang (Dept. of Resources and Environment sciences, Beijing Normal university, Beijing 100875, china) Dept. of Resources and Environment sciences Beijing Normal University Beijing China

It is significant to estimate terrestrial net primary productivity (NPP) accurately not only for global change research, but also for natural resources management to achieve sustainable development. Remote sensing data can describe spatial distribution of plant resources better. So, in this paper an NPP model based on remote sensing data and climate data is developed. And 1km resolution AVHRR NDVI data are used to estimate the spatial distribution and seasonal change of NPP in china. The results show that NPP estimated using remote sensing data are more close to truth. Total annual NPP in china is 2.645X109 tC. The spatial distribution of NPP in china is mainly affected by precipitation and has the trend of decreasing from southeast to northwest.

关键词： remote sensing net primary productivity vegetation model seasonal change

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Cis-regulatory element-based genome-wide identification of DREB1/CBF targets in Arabidopsis

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Progress in Natural Science:Materials International 2008年第5期18卷 579-583页

作者： Huan Zhao a, Weizhong Liu a,b, Yong Hu a, Xianglin Liu a, Yikun He a, a College of Life Science, Capital Normal university, Beijing 10003., china b College of Life sciences, Shanxi Normal university, Linfen 041004, china College of Life Science Capital Normal University Beijing 100037 China College of Life sciences Shanxi Normal University Linfen 041004 China

Microarray analysis is used to identify transcriptional targets. However, the direct targets of transcription factors cannot be distin- guished from indirect ones; further, genes with low-expression levels cannot be identi ed by this method. In the present study, we exploit the cis-element dehydration-responsive element (DRE) that is known to be responsible for the transcription of DRE binding factor 1 (DREB1) targets in the promoter region of all Arabidopsis genes. Putative targets whose promoters contain the elements were veri ed by both microarray and reverse transcription-polymerase chain reaction (RT-PCR) analysis. Five new DREB1/CBF direct targets were identi ed. Compared with traditional microarray analysis, our method is convenient and cost-e ective for identifying the downstream targets of transcription factors.

关键词： Arabidopsis Cis-element Transcription factor DREB1/CBF Stress

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Nitrate and Ammonium Leaching in Variable-and Permanent-Charge Paddy Soils

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Pedosphere 2010年第2期20卷 209-216页

作者： XIONG Zheng-Qin HUANG Tai-Qing MA Yu-Chun XING Guang-Xi ZHU Zhao-Liang College of Resources and Environmental sciences Nanjing Agricultural University Nanjing 210095 （China） State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of SciencesNanjing 210008 （China）

A variable-charge （VC） and a permanent-charge paddy soil （PC） were selected to study nitrate-N （NO3.--N） and ammonium-N （NH4^＋-N） leaching with N isotopes for one consecutive year. An irrigation and intermittent drainage pattern was adopted to mimic natural occurrence of rainfall during the upland crop season and drainage management during the flooded rice season. Treatments to each soil type were no-N controls （CK）, ^15N-labeled （NH4）2SO4 （NS）, and milk vetch （NV） applied at a rate equivalent to 23. kg N ha^-1 to unplanted lysimeters, totaling six treatments in triplicates. Results indicated that the soil type dominated N leaching characteristics. In the case of PC, NO3.--N accounted for 78% of the total leached inorganic N; NS was prone to leach three times more than the NV, being 8.2% and 2.4% of added ^15N respectively; and 〉 85% of leached NO3.N came from of the total inorganic N in leachate. Moreover, NH4^＋-N native N in the soil. In the case of VC, NH4^＋-N made up to 92% leaching was detected throughout the whole incubation, and was particularly high during the flooded season. NO3.--N leaching in VC occurred later at a lower rate compared to that in PC. The findings of this study indicate that NO3.--N leaching during the drained season in permanent-charge paddy soils and NH4^＋-N leaching in variable-charge soils deserve more attention for regional environmental control.

关键词： drained/flooded rotations fertilizer-derived nitrate ion movement lysimeter ^15N tracing technique

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Terahertz radiation sources based on free electron lasers and their applications

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Science china(Information sciences) 2012年第1期55卷 1-15页

作者： TAN Ping1,HUANG Jiang2,LIU KaiFeng2,XIONG YongQian2&FAN MingWu1,2 1Department of Electronic and Information Engineering,Huazhong university of Science and Technology,Wuhan 43.074,china 2College of Electrical and Electronic Engineering,State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong university of Science and Technology,Wuhan 43.074,china 1. Department of Electronic and Information Engineering Huazhong University of Science and Technology Wuhan 430074 China2. College of Electrical and Electronic Engineering State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China

The tunability,high power and flexible picoseconds-pulse time structure of terahertz(THz)radiation make the THz free-electron laser(FEL)a very attractive THz source of coherent *** paper focuses on the development and perspectives of THz radiation sources based on the *** principles of the low gain THz FEL oscillator,the SASE THz FEL amplifier and the supperradiant THz FEL are reviewed briefly,and the key technologies of THz FEL,such as injector,accelerator,undulator and optical cavity,are discussed,*** current status of and future prospects for THz radiation sources based on the FEL are emphasized in this *** research and development have shown bright future in free-electron laser(FEL)THz radiation *** potential applications can be carried out in the field of imaging,material research,biology medicine,communication,diagnostics and many others.

关键词： terahertz source terahertz applications free electron laser

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On 3.colorability of planar graphs without adjacent short cycles

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Science china Mathematics 2010年第4期53卷 1129-1132页

作者： WANG YingQian 1,MAO XiangHua 1,LU HuaJing 2 & WANG WeiFan 1 1 College of Mathematics,Physics and Information Engineering,Zhejiang Normal university,Jinhua 3.1004,china 2 College of Basic Science,Ningbo Dahongying university,Ningbo 3.5175,china 1. College of Mathematics Physics and Information Engineering Zhejiang Normal University Jinhua 321004 China2. College of Basic Science Ningbo Dahongying University Ningbo 315175 China

A short cycle means a cycle of length at most *** this paper,we prove that planar graphs without adjacent short cycles are *** improves a result of Borodin et al.(2005).

关键词： planar graph coloring extension cycle

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PROBABILISTIC ANALYSIS OF GALERKIN-LIKE METHODS FOR THE FREDHOLM EQUATION OF THE SECOND KIND

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Journal of Computational Mathematics 1998年第5期16卷 445-456页

作者： Tian-zi Jiang (School of Mathematics, The university of New South Wales, Sydney 2052, Austmlia National Laborutory of Pattern Recognition, Institute of Automation,Chinese Academy of sciences, Beijing 100080, china) Univ New S Wales Sch Math Sydney NSW 2052 Australia Chinese Acad Sci Inst Automat Natl Lab Pattern Recognit Beijing 100080 Peoples R China

This paper deals with the approximate solution of the Fredholm equation u TKu = f of the second kind from a probabilistic point of view. With Wiener typemeasures on the set of kernels and free terms we determine statistical features of the approximation process, i.e., the most likely rate of convergence and the dominating individual behavior. The analysis carried out for a kind of Galerkin-like method.

关键词： Probabilistic analysis fredholm equation galerkin-like method abstract wiener space

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Fabrication of Dense Ultrafine TiAl Alloys by Spark Plasma Synthesis from Mechanically Activiated Powders

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Journal of Wuhan university of Technology(Materials Science) 2007年第3期22卷 408-411页

作者：夏力 Department of Materials Engineering Wuhan University

Powder of Ti-46at%Al alloy was synthesized through mechanical activation（MA） and then sintered and concurrently consolidated in a short sintering time of 900 s by using a spark plasma sintering（SPS） process. The XRD and SEM profiles show that the microstructures of TiAl alloys contained γ TiAl and small amount α-2 Ti3.l phase, whose amount can be controlled by the sintering temperature. The compacts retained the original fine-grained fully densified bodies by avoiding an excessively high sintering temperature. The alloys sintered at higher temperature with this process showed a coarser microstructure. So it is possible to produce dense nanostructured TiAl alloys by mechanically activated spark plasma sintering （MASPS） within a very short period of time.

关键词： titanium aluminides mechanical activation spark plasma sintering (SPS)

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Extended UML with Role Modeling

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Wuhan university Journal of Natural sciences 2001年第Z1期6卷 175-182页

作者： He Ke\|qing 1, Jiang Hong 1, He Fei 2, Ying Shi 3.1 School of Computer Science,Wuhan university,Wuhan 43.072,china 2.Japan Advanced Institute of Science and Technogy,923.|1292,Japan 3.Stae Key Lab. of Software Engineering, Wuhan university,Wuhan School of Computer Science Wuhan university Wuhan 430071 China

UML is widely accepted and applied by the international software industry. UML is a powerful language for Object oriented modeling, designing, and implementing software systems, but its Use Case method for requirement analysis and modeling software patterns has some explicit drawbacks. For more complete UML, this paper proposes the Role Use Case modeling and its glyphs, and provides an instance of requirement analysis using Role Use Case method. Uses the Role Model to modeling software pattern at knowledge level. This paper also extends the UML Meta Model and accentuates “RM before UML's class Modeling”.

关键词： UML role role modeling software pattern use case

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