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| 1 | Tectonic evolution of the Dabieshan orogen: In the view from polyphase deformation of the Beihuaiyang metamorphic zone显示文摘The Beihuaiyang metamorphic zone was formed by the Early Mesozoic collision of the North and South China Blocks. It consisted of the Foziling and Luzhenguan complexes and was thought to have never afforded a deep subduction. A similar feature of the deformation in the Dabieshan UHP metamorphic rocks implies that these different tectonic units share the same geodynamic background. The early stage of deformation can be preserved on account of their relatively shallower subduction than that for UHP rocks. On the basis of an analysis of the geo- logical structure and geochronological results, five deformational stages have been recognized: a D1-Early compressional deformation which represents the continental subduction; a D2-Early exhumation deformation producing a syn-convergence exhumation; a D3-Main deformation, represented by an exhumation deformation with Late Triassic age; a D4-Doming and its margin extensional gravity collapse deformation and finally a D5-regional extensional deformation of Cretaceous that was mostly introduced by the migmatization and plutonism. | LIN Wei1, 2, Faure Michel3, WANG Qingchen1 & Arnaud Nicolas4 1. LTE, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2. Department of Earth and Planetary Sciences, Graduate School of Science, Nagoya University, Japan 3. ISTO, UMR CNRS 6113, Batiment Géosciences, Orléans Université d’Orléans, 45067 Orléans Cedex 2, France 4. UMR 6524 'Magmas et Volcans', 5 Rue Kessler, 63000 Clermont-Ferrand, France | 2005 | Science China Earth Sciences2005，48，7： | 25 |
| 2 | ^(40)Ar-^(39)Ar ages of the Louzidian-Dachengzi ductile shear zone near Chifeng,Inner Mongolia and their tectonic significance显示文摘The Louzidian normal fault occurs as the eastern detachment fault of the Kalaqin metamorphic core complex. Field observations and microstructural analyses reveal that the Louzidian-Dachengzi ductile shear zone developed in its lower-plate was genetically related to sinistral strike-slips and extensional faulting. Two samples from this ductile shear zone yield 40Ar-39Ar plateau ages of 133 Ma (Bi) and 126 Ma (Kp), which are concordant with their isochron ages. The plateau age of 133 Ma (Bi) records the formation age of the ductile shear zone. The inconsistent relationship between the earlier strike-slip ductile shear zone and the later normal fault makes the Kalaqin Quasi-metamorphic core complex distinctive from Cordil-leran nietamorphic core complex. These ages provide important geochronological data for putting constraints on the formation age and genesis of such ductile shear zones. | ZHANG Xiaohui, LI Tiesheng, PU Zhiping & WANG HuiResearch Center for Mineral Resources Exploration, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, G | 2002 | Chinese Science Bulletin2002，47，15： | 21 |
| 3 | DEFORMATION AND FRACTURE MECHANISMS OF TWO-PHASE TiAl-BASED ALLOYS WITH FULLY LAMELLAR MICROSTRUCTURE显示文摘DEFORMATIONANDFRACTUREMECHANISMSOFTWO-PHASETiAl-BASEDALLOYSWITHFULLYLAMELLARMICROSTRUCTUREY.G.Zhang,C.Q.Chen(BeijingUniversit... | Y. G .Zhang, C. Q. Chen (Beijing University of Aeronautics and Astronautics, Beijing 100083, China)Q. Xu (Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences. Beijing,China)M. C. Chaturvedi (The University of Manitoba, Winnipeg, Manito | 1995 | Acta Metallurgica Sinica(English Letters)1995，8，Z1： | 7 |
| 4 | A Study on 3D FE Simulation Method of NC Bending Process of Thin-walled Tube显示文摘The numerical control (NC) precision bending process of thin-walled tube is on e of advanced plastic forming processes with high efficiency, forming precision, strength/weight ratio and low cost, thus it is playing more and more important role in manufacturing parts in aerospace and automobile industries. However, the determination of parameters crucial to make sure tube parts qualified is heavil y experience-based and involves repeated trial-and-errors in practice, which makes the production efficiency reduce drastically and does not fulfill the deve lopment of high technology. With quick development of computer technology and gr adual perfect of plastic forming theory, computer numerical simulation based on finite element method (FEM) has become one of important tools of researching and developing plastic forming technology. Development trend of NC precision bendin g process of tube is simulating its forming process by FEM. Because NC tube bend ing is of 3D nature, it is of great importance to analyze the forming mechanism and find out the influence law of forming parameters on forming process in the N C precision bending process of thin-walled tube quantitatively by 3D FE simulat ion. Based on the rigid-plastic finite element method (FEM) principle, a 3-dimens ional (3D) rigid-plastic FE simulation system named TBS -3D (tube bending simu lation by 3D FEM) for the NC bending process of thin-walled tube has been devel oped, a reasonable FEM model has been established. By use of this FEM simulation system, a NC bending process of thin-walled has been simulated. And deformed m eshes under different bending stages, stress distribution along bending directio n, relationship between maximal wall thickness changing ratio and bending angle have been obtained. And then some forming laws of NC tube bending obtained are a s follows: (1) NC bending process make tube elongate to some extent; (2) Charact eristic of stress distribution is that the outer area is undergoing tensile stre ss, the inner area is undergoing compression stress, and stress neutral layer mo ves close to the inner area, which is in good accordance with the practice; (3) Maximal wall thinning ratio in the outer tensile area changes only a little with increase of bending angle, and maximal wall thickening ratio in the inner compr ession area increases linearly with bending angle. The above results show that 3 D FE simulation is an important and valid tool of analyzing NC bending process o f tube, this research is beneficial for the practical tube bending process, and it may serve as a significant guide to the practice of the relevant processes. | ZHAN Mei 1, YANG He 1, JIANG Zhi-qiang 2, ZHAO Zhen-son g 1, LIN Yan 1 (1. College of Materials Science and Engineering, Northwestern Polytech nical University, Xi’an 710072, China 2. Xi’an Heavy Machinery Research Institute, Xi’an 71003 2, China) | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 3 |
| 5 | WELDING BETWEEN HIGH MANGANESE STEEL AND HIGH CARBON STEEL显示文摘Manuscript received 30 July 1999 Abstract The shielded metal arc welding (SMAW) of a manganese steel part as a crossing of railway track to a carbon steel part as the rails of the railroad is the welding of dissimilar steel. It are was known that it is not possible to the the rail of railroad directly to the cross- ing of railway track made from a steel containing about 14% of manganese (wt. ) because of so many differences between the two kinds of steels such as composition, microstructure,mechanical properties and weldability.A method was used to solve the problem by presetting an intermediate layer on each side of the joint and other special procedures were used.The result of test indicated that a good weld joint was obtained. | M. H. Guo,D. C. Shao, Z. G Dong and J. C Yang National Key Laboratory Advanced Welding Production Technology, Harbin institute of Technology, Harbin 150001, China | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，1： | 2 |
| 6 | A Mathematical Model on Vacuum Chamber of a Multifunctional RH-degasser显示文摘A 3D-mathematical model was developed for the simulation of gas flow, combustion and heat convection in RH vacuum chamber. Under different conditions, the influences of the Kawasaki Oxygen Top Blowing system (KTB) on the gas flow, chemical reactions and temperature distributions were calculated based on the model. The optimum position of the lance is suggested for the RHKTB degassing process. | Yisheng Chen, Youduo He, Daqiang Cang, Zongze Huang 1) Institute of Metallurgical Engineering, UIST, Baotou 014010, China 2) Metallurgy School, University of Science and Technology Beijing. Beijing 100083. China 3) Technical Centre, Baoshan Iron & steel G | 2001 | Journal of University of Science and Technology Beijing2001，8，4： | 2 |
| 7 | Discussion on Landscape Ecosystem Planning of Small Basins in the Qinghai-Tibet Plateau——Taking Nieruzangbu Basin as an Example显示文摘In this paper, taking Nieruzangbu as an example, it is discussed that how to plan landscapes of small basin in the Qinghai-Tibet Plateau. With analyzed the status and character of landscape structure through the use of landscape diversity indexes and landscape dominant indexes, some major problems in the landscape ecosystem are pointed out. On the basis of regional restrictive principle and compliance principle of resources, environment and economy, Nieruzangbu Basin is divided into three landscape function areas. According to the demands of each function area, landscape structure planning is carried out to improve ecological environment through optimization and adjustment of landscape structure in Nieruzangbu Basin. | G He Xiao-rong, Li Hui-xia, Li Ai-nong, Zhou Hong-yi, Wang Xiao-danInstitute of Mountain Hazards and Environment. Chinese Academy of Sciences, Chengdu 610041, Sichuan. China | 2003 | Wuhan University Journal of Natural Sciences2003，8，03B： | 1 |
| 8 | Serum and urine monitoring of fluoride exposed workers in aluminium smelting factory显示文摘Serumandurinemonitoringoffluorideexposedworkersinaluminiumsmeltingfactory￥K.Kono;Y.Yoshisda;M.Watanabe;K.Usuda;H.Nagaie;Y.Tak... | K. Kono Y. Yoshisda M. Watanabe K. Usuda H. Nagaie Y. Takahashi(Department of Hygiene and Public Health , Osaka Medical College, 2- 7 Daigakumachi, Takatsuki City, Osaka, 569, Japan)Sun G(Department of Preventive Medicine, China Medical University ,S | 1996 | Journal of Environmental Sciences1996，8，2： | 1 |
| 9 | INVESTIGATION OF UNSTEADY EXCITATION EFFECTS ON AERODYNAMIC PROPERTIES OF AIRFOILS显示文摘In this paper, the techniques to manage and control the flow over airfoils by using the external unsteady excitations are investigated. The mechanisms of these excitation effects are also explored. The principal goal of this study is to gain a better understanding and to find the possible ways for enhancing the aerodynamic efficients. The experimental investigations are carried out in two low-speed wind tunnels. The test models are two dimensional airfoils with different section geometries. Four means of excitations have been used in these experiments. (1) The pitch oscillation of the airfoil high-angle-of-attack situation. (2) The moving surface effects of the airfoil with a leading edge rotating cylinder. (3) Oscillating leading edge flaperon. (4) Small oscillating spoiler located near the leading edge of the airfoil. The lift, drag and pitch moment coefficients are measured in these experiments. But, we will put the emphasis only on the 'dynamic amplifying effects' on aerodynamic lift in this paper. | Cui E J, Fu G M Yu X T Beijing Institute of Aerodynamics P.O. Box 7215, Beijing, China | 1991 | Chinese Journal of Aeronautics1991，6，2： | 1 |
| 10 | Genetic diversity across natural drobium officinale, the endangered medicinal herb , revealed by ISSR and RAPD markers 显示文摘 | Ding G L populations D Den endemic to China Russian Journal of ing X Qian L | 2009 | Genetics2009，45，3： | 1 |
| 11 | Nitrous oxide emission and emission estimation for 显示文摘 | HUANG B CHEN C- HUANG G from temperate meadow grassland temperate grassland of China Agroecosystems 2003 67(1):31-36 | 2003 | Nutrient Cycling in2003，，： | 1 |
| 12 | Virtual Facilit Layout Design Using Virtual Reality Techniques显示文摘Manufacturing facility layout design has long been recognized as one of the most critical and difficult design tasks in manufacturing industries. Traditional layout methods can not fully solve this complex spatial layout problem. Virtual reality (VR) is a new form of human\|computer interaction, which has the potential to support a range of engineering applications. This paper discusses the reasons why manufacturing facility layout design is considered to be an appropriate new area of VR utilization. A VR\|based layout design framework is proposed. The virtual environment construction issues are discussed. An example of the immersive VR application of facility layout is examined. | Li Zhi\|hua, Zhon g Yi\|fang CAD Center, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China | 2003 | Wuhan University Journal of Natural Sciences2003，8，01A： | 1 |
| 13 | Cadmium and human health: a perspective based on recent studies in China 显示文摘 | NORDBERG G CHINA Cad Group | 2003 | J Trace Elem Exp Med2003，16，： | 1 |
| 14 | Epide miology,pathophysiology and natural history of venous thromboembolism显示文摘 | China G Marra R Di Stasi C | 1996 | Ray1996，21，3： | 1 |
| 15 | Cadmium and human health:A perspective based on recent studies in China显示文摘 | Nordberg G China Cad Group | 2003 | J Trace Elem EXP Med2003，16，： | 1 |
| 16 | Typing of Clostridium perfringens by in vitro amplification of toxin genes显示文摘 | Daube G China B Simon P | 1994 | J Appl Bacteriol1994，77，： | 1 |
| 17 | Study ofthe variability of pork quality by principal component analysis显示文摘 | LEROY B ETIENNE G CHINA B | 2008 | Sciences Des Aliments2008，28，6： | 1 |
| 18 | Typing of Clostridium perfringens by in vitro amplification of toxin genes显示文摘 | Daube G China B Simon P | | 0，，： | 1 |
| 19 | The stability of polymeric membranes in a TiO2 photocatalysis process显示文摘 | China S S K Chiang A G Fane | 2006 | Journal of Membrane Science2006，275，12： | 1 |
| 20 | Side-effects of organic and inorganic pollutants on soil nitrification and respiration显示文摘Side-effectsoforganicandinorganicpollutantsonsoilnitrificationandrespiration￥GongPing;SunTieheng(InstituteofAppliedEcology,Ch... | Gong Ping Sun Tieheng (Institute of Applied Ecology,Chinese Academy of Sciences, Shenyang 110015, China )G nter Beudert Hermann. H. Hahn (Institut fur Siedlungswasserwirtschaft,Der Universitat Karlsruhe).(Postfach 6980,Am Fasanengarten,D-76128 Karlsruhe | 1996 | Journal of Environmental Sciences1996，8，1： | 1 |
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