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| 1 | Mianlüe tectonic zone and Mianlüe suture zone on southern margin of Qinling-Dabie orogenic belt显示文摘The Mianle tectonic zone (Mianle zone), an ancient suture zone in addition to the Shangdan suture in the Qinling-Dabie orogenic belt, marks an important tectonic division geo-logically separating north from south and connecting east with west in China continent. To de-termine present structural geometry and kinematics in the Mianle tectonic zone and to recon-struct the formation and evolution history involving plate subduction and collision in the Qinling-Dabie orogenic belt, through a multidisciplinary study, are significant for exploring the mountain-building orogenesis of the central orogenic system and the entire process of the major Chinese continental amalgamation during the Indosinian. | ZHANG Guowei1, DONG Yunpeng1, LAI Shaocong1, GUO Anlin1, MENG Qingren2, LIU Shaofeng3, CHENG Shunyou1, YAO Anping1, ZHANG Zongqing4, PEI Xianzhi5 & LI Sanzhong6 1. Department of Geology, Northwest University, Xian 710069, China 2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China 3. Earth Science and Resource Faculty, China University of Geosciences, Beijing 100083, China 4. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China 5. Changan University, Xian 710054, China 6. Qingdao University of Oceanography, Qingdao 266003, China | 2004 | Science China Earth Sciences2004,47,4: | 57 |
| 2 | Simulation of energy and water balance in Soil-Vegetation-Atmosphere Transfer system in the mountain area of Heihe River Basin at Hexi Corridor of northwest China显示文摘In the mountain area of inland Heihe River Basin at Hexi Corridor of northwest China during the vegetation growing season from May to September, the Simultaneous Heat and Water (SHAW) model of Soil-Vegetation-Atmosphere Transfer (SVAT) system is applied to simulating and studying energy and water balance of the soil-residue-plant canopy layers in the Picea crassifolia forest and the grassland by the forest at the shaded slope and the grassland at the sun-facing slope. The simulation of energy balance indicates that net radiation of the grass- land at the sun-facing slope is more than that of the Picea crassifolia forest and the grassland by the forest at the shaded slope. The energy outgoing components are the first latent heat and next sensible heat from the grassland both at the shaded slope and the sun-facing slope, but those at the former are less. The energy outgoing components are the first sensible heat and next latent heat from the Picea crassifolia forest. The composition and distribution of energy in the soil-residue-plant canopy layers in the Picea crassifolia forest and the grassland by the forest at the shaded slope make the soil layer receive less energy, which therefore, especially the forest possesses the energy conditions for soil water conservation. The simulation of water balance indicates that the water loss of the grassland at the sun-facing slope is mainly caused by soil evaporation, while evapotranspiration of the Picea crassifolia forest and the grassland by the forest at the shaded slope is less than that of the grassland at the sun-facing slope. Half of the evapotranspiration of the Picea crassifolia forest and the grassland by the forest at the shaded slope is consumed by transpiration. After precipitation, the soil water storage is increased much more for the Picea crassifolia forest and also more for the grassland by the forest at the shaded slope. Therefore the shaded slope vegetation, especially the forest is favorable for soil water storage. | KANG Ersi1, CHENG Guodong1, , SONG Kechao1, JIN Bowen1, , LIU Xiande3 2 3 & WANG Jinye3 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 2. State Key Laboratory of Frozen Soil Engineering, Chinese Academy of Sciences, Lanzhou 730000, China 3. Academy of Water Resources Conservation Forest of Qilian Mountains, Gansu Province, Zhangye 734000, China | 2005 | Science China Earth Sciences2005,48,4: | 25 |
| 3 | Metallogenic systems related to Mesozoic and Cenozoic granitoids in South China显示文摘Large scale mineralizations of nonferrous, precious, and rare metals took place in South China in Mesozoic and Cenozoic Eras, which were mostly closely related with granitic magmatisms of different sources and features. Four metallogenic systems related to Mesozoic and Cenozoic granitoids are put forward in this paper. They are: (i) the porphyry-epithermal copper-gold system related to calc-alkaline volcanic-intrusive magmatism, (ii) rare metal (mainly W, Sn, Ta, Nb, etc) metallogenic system related with continental crust re-melting type granitoids, (iii) copper and polymetallic metallogenic system related with intra-plate high potassium calc-alkaline and shoshonitic magmatism, and (iv) Au-Cu and REE metallogenic system related to A-type granites. The main characteristics of these systems are briefly discussed. These Mesozoic and Cenozoic granitoids of different sources were the products of different periods of lithosphere evolution in that area under different tectonic-dynamic environments. Fundamentally speaking, however, the granitoids and related metallogeneses are the results of mantle-crust interactions under a tensile tectonic environment in South China. | 华仁民 陈培荣 张文兰 刘晓东 陆建军 林锦富 姚军明 戚华文 张展适 顾晟彦 | 2003 | Science China Earth Sciences2003,46,8: | 24 |
| 4 | Discovery of laryngeal carcinoma by serum proteomic pattern analysis显示文摘Laryngeal carcinoma is the most common malignancy among head and neck tu-mors. The purpose of this study is to find biomarkers for laryngeal carcinoma in patient blood serum using the Surface Enhanced Laser Desorption/Ionization (SELDI) technique. Serum samples from 33 laryngeal carcinoma (12 cases of glottis, 18 of supraglottis and 3 of subglottis) patients and 31 age- and sex-matched healthy people were analyzed by SELDI-TOF on a Pro-teinChip reader, PBSII-C. Protein profiles were generated using WCX2 protein chips. Protein peak clustering and classification analyses were performed utilizing the Biomarker Wizard and Biomarker Pattern software packages, respectively. The results showed that sixteen peaks had significant difference between laryngeal cancer patients and healthy group, eight of which were up-regulated in the patient samples, and the others were down-regulated. Two protein peaks 8153 Da and 2035 Da were automatically chosen for the system training and development of a classification tree. The analysis yielded a correct percentage of 96.9% for patients and 96.7% for control. The results suggest that serum is a useful resource for the detection of specific bio-markers for laryngeal carcinoma. Proteinchip Array System was a useful tool for a high throughput screening of large-sized serum samples to discover potential biomarkers for carci-noma. | XIAO Xueyuan1, ZHAO Xiaodong2, LIU Jiankai3, GUO Fuzheng1, LIU Danhui1 & HE Dacheng1 1. Key Laboratory for Cell Proliferation and Regulation Biology, Ministry of Education, Beijing Normal University, Universities?Confeder-ated Institute of Proteomics, Beijing 100875, China 2. Department of Otolaryngology-Head and Neck Surgery, Third Affiliated Hospital, Jilin University, Changchun 130031, China 3. Department of Biochemistry, Jilin University, Changchun 130021, China | 2004 | Science China(Life Sciences)2004,47,3: | 22 |
| 5 | A unified viscous-spring artificial boundary for 3-D static and dynamic applications显示文摘A method to develop unified artificial boundaries for problems coupling static effect and dynamic effect is proposed. Based on the dynamic viscous-spring artificial boundary and the fundamental solution of static problems in elastic half space, a unified viscous-spring artificial boundary for 3-D static and dynamic applications is established. | LIU Jingbo LI Bin | 2005 | Science China(Technological Sciences)2005,48,5: | 21 |
| 6 | Liver transplantation in China: problems and their solutions显示文摘BACKGROUND: The past decade has witnessed the rapid development of liver transplantation in China. The 1-year survival of liver transplant patients comes to 80% in many leading medical centers and the number of liver transplanta- tion is increasing. However, liver transplantation in China is facing several challenges including recipient with hepato- cellular carcinoma (HCC), recurrence of HCC and hepati- tis B, long-term postoperative care, the bridge to liver transplantation, and shortage of liver donor. This review was to understand the status of and problems in liver trans- plantation in China. DATA RESOURCES: An English-language literature search using MEDLINE (1990-2003) on liver transplantation and other related reports and review articles in Chinese from major transplant centers in China. RESULTS: HCC is one of the main indications for liver transplantation in China but different centers adopted dif- ferent criteria for selection of patients. Hepatitis B virus re- infection is a vital problem after liver transplantation in HBV-related patients. More and more attention was fo- cused on long-term postoperative care and donor shortage. Artificial liver support system has been applied in patients waiting for a graft in many centers. CONCLUSIONS: HCC remains to be one of the main indi- cations for liver transplantation in China; combined hepati- tis B immune globulin and lamivudine is considered effec- tive to prevent hepatitis B virus reinfection. Apart from long-term postoperative care for the improvement of the survival rate, early steroid withdrawal is feasible in liver transplantation. Living donor liver transplantation, split liv- er transplantation, and marginal donor transplantation can deal with donor shortage to some extent. Artificial liver as- sist system serves as a bridge to liver transplantation. | Jian Wu and Shu-Sen Zheng Hangzhou, China Department of Hepatobiliary Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003 , Chi- na | 2004 | Hepatobiliary & Pancreatic Diseases International2004,3,2: | 15 |
| 7 | Rhenium-osmium isotope constraints on the age and source of the platinum mineralization in the Lower Cambrian black rock series of Hunan-Guizhou provinces, China显示文摘The shale at the bottom of the Lower Cambrian black series in South China is rich in nonferrous metals, noble metals, rare and dispersed elements and radioactive elements, known as polyelement-rich bed. In order to date and trace the source of the platinum group elements, 6 samples were collected from the Zhongnan region of Guizhou Province, and the Ganzi- ping-Sancha region of Hunan Province. The contents and isotopes of Re and Os were measured. Re and Os are positively correlated with each other and the correlation coefficient between 187Os/188Os and 187Re/188Os is 0.99856. On the 187Os/188Os-187Re/188Os diagram, 6 sample points are well-distributed along the (542±11) Ma fitting isochron in high coincidence and with 0.84±0.12 as the initial 187Os/188Os value. The result displays that the age value of the major mineralization of Re, Os and other platinum group elements is (542±11) Ma, which is identical with the stratigraphical age of the wall rocks; the polyelement beds in Hunan and Guizhou provinces bear high isochroneity; the differences of the forming times of different materials in the polyelement bed of the same area do not surpass the error limit permissible for Re-Os date fitting; there exists no distinct time interval between the formation of the diagenetic veinlets and that of the polyelement bed, or the Re-Os isotope composition has not been distinctly changed by the former process; basaltic crust might be the major source of Re, Os, other platinum group and trace elements in the Lower Cambrian polyelement bed of Hunan and Guizhou provinces. | 李胜荣 肖启云 申俊峰 孙丽 刘波 阎柏琨 江永宏 | 2003 | Science China Earth Sciences2003,46,9: | 13 |
| 8 | The generalized quasi-variational principles of non-conservative systems with two kinds of variables显示文摘According to the corresponding relations between general forces and general displacements, the balancing and geometrical equations of elasticity are multiplied by the corresponding virtual quantities, integrated with volume and area, and then added algebraically. Proceeding to the next step, by substituting constitutive relation and considering that body force and surface force are both fellow forces, the generalized quasi-variational principles with the two kinds of variables of the first type are established in non-conservative systems. Through substituting another constitutive relation, using similar methods as above, the generalized quasi-variational principles with the two kinds of variables of the second type are established in non-conservative systems. By using the generalized quasi-complementary energy principles with the two kinds of variables of the first type, a method for solving two kinds of variables (internal force and deformation) is given for non-conservative systems of the typical fellow forces. | LIANG Lifu LIU Diankui SONG Haiyan | 2005 | Science China(Physics,Mechanics & Astronomy)2005,48,5: | 12 |
| 9 | SOME ADVANCES IN CLIMATE WARMING IMPACT RESEARCH IN CHINA SINCE 1990显示文摘Increasing the concentration of greenhouse gases in the atmosphere will strengthen the natural greenhouse effect, which could lead to global climate warming and more other changes. China is a largely agricultural country with a large size of population and the relative shortages of farming lands and water resources, thus increasing the importance of climate warming for national economy development. Therefore. Chinese government and scientists have paid great attention to the impact-assessment of climate warming on national economy in China, especially during the past 10 years. This presentation will briefly describe some major issues of climate warming impact research on national vegetation, agriculture, forest, water resources, energy use and regional sea level for China, etc.As a result, all climate change scenarios derived by GCMs suggest a substantial change in thecharacteristic natural vegetation types. It is also shown that comparing with the distributionsimulated under thenormal time period 1951-1980 as the present climate, by 2050 large changesin cropping systems would occur almost everywhere in China. Climate warming would lead toincrease cropping diversification and multiplication. Unfortunately, the possible net balancebetween precipitation and evapotranspiration would be negativeand it would lead to reduce thegrain production in China significantly due to enhanced moisture stress in soil. The most evidentinfluence of climate warming on water resources would happen in Huanghe-Huaihe-Haihe Basin andthe water supply-demand deficit would be substantially enhanced in this area. And also, a warmerclimate for China will alter the energy requirement for domestic heating and cooling, that is,reduce energy use for heating in northern China and increase energy consumption for cooling insouthern China. | WANG Futang(王馥棠) | 2001 | Acta meteorologica Sinica2001,15,4: | 12 |
| 10 | Self-organized criticality and its application in the slope disasters under gravity显示文摘Firstly, three kinds of sand pile experiments which reflect the universal process of energy dissipation within the slope accumulation under the self-organized action are reviewed. They all show that self-organized criticality (SOC) is related to granular non-uniform. The experiment of Tokamak plasma system is introduced, which shows some of SOC properties of Tokamak plasmas in Ohmic region or L-mode. Secondly, material tests in geotechnical engineering and numerical simulations of micro-structure of sand piles indicate that SOC is determined by the structural characteristics. Finally, according to the principle of SOC, the behavior of slope disasters under gravity and its forecast as well as the design of protection engineering are discussed. | YAO Lingkan, HUANG Yuan & LU Yang School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China Southwestern Institute of Physics, Chengdu 610031, China | 2003 | Science China(Technological Sciences)2003,46,z1: | 10 |
| 11 | A novel and highly efficient production system for recombinant adeno-associated virus vector显示文摘Recombinant adeno-associated virus(rAAV) has proven to be a promising gene delivery vector for human gene therapy. However, its application has been limited by difficulty in obtaining enough quantities of high-titer vector stocks. In this paper, a novel and highly efficient production system for rAAV is described. A recombinant herpes simplex virus type 1(rHSV-1) designated HSV1-rc/△UL2, which expressed adeno-associated virus type2(AAV-2) Rep and Cap proteins, was constructed previously. The data confirmed that its functions were to support rAAV replication and packaging, and the generated rAAV was infectious. Meanwhile, an rAAV proviral cell line designated BHK/SG2, which carried the green fluorescent protein(GFP) gene expression cassette, was established by transfecting BHK-21 cells with rAAV vector plasmid pSNAV-2-GFP. Infecting BHK/SG2 with HSV1-rc/△UL2 at an MOI of 0.1 resulted in the optimal yields of rAAV, reaching 250 transducing unit(TU) or 4.28×104 particles per cell. Therefore, compared with the conventional transfection method, the yield of rAAV using this 'one proviral cell line, one helper virus' strategy was increased by two orders of magnitude. Large-scale production of rAAV can be easily achieved using this strategy and might meet the demands for clinical trials of rAAV-mediated gene therapy. | 伍志坚 吴小兵 曹晖 董小岩 王宏 侯云德 | 2002 | Science China(Life Sciences)2002,45,1: | 10 |
| 12 | Present-day crustal movement and tectonic deformation in China continent显示文摘Velocity field of China continent constrained by Global Positioning System (GPS) reveals both continuous and block-like styles of deformation. Continuous deformation commonly characterizes actively deforming mountain ranges such as the Tianshan Mountain, Qilian Mountain, and Tibet. The block-like movement often represents deformation in the tectonically stable regions such as Ordos, South China and Tarim blocks. GPS measurements indicate 5.1±2.5 mm/a left-lateral strike-slip rate along the Altun fault. Eastward convergence along the Longmenshan fault is less than 6.7±3.0 mm/a. South China moves 11-14 mm/a eastward compared with the stable Eurasia. These low slip rates do not imply rapid eastward extrusion of China continent predicted by the model of 'continental extrusion'. It appears that 'crustal thickening' model more properly describes both continuous and block-like styles of deformation in China continent. | 王琪 张培震 牛之俊 赖锡安 J.T.Frevmueller 朱文耀 刘经南 李延新 R.Bilham K.M.Larson | 2002 | Science China Earth Sciences2002,45,10: | 10 |
| 13 | The spectrum for large sets of pure directed triple systems显示文摘An LPDTS(υ) is a collection of 3(υ - 2) disjoint pure directed triple systems on the same set of υ elements. It is showed in Tian's doctoral thesis that there exists an LPDTS(υ) for υ≡ 0,4 (mod 6), υ≥ 4. In this paper, we establish the existence of an LPDTS(υ) for υ≡ 1, 3 (mod 6), υ> 3. Thus the spectrum for LPDTS(υ) is completely determined to be the set {υ:υ≡0, 1 (mod 3),υ≥4}. | ZHOU Junling, CHANG Yanxun & Jl Lijun Institute of Mathematics, Beijing Jiaotong University, Beijing 100044, China Department of Mathematics, Suzhou University, Suzhou 215006, China | 2006 | Science China Mathematics2006,49,8: | 9 |
| 14 | Uniform blow-up profiles and boundary layer for a parabolic system with localized nonlinear reaction terms显示文摘This paper deals with the blow-up properties of the solution to a semilinear parabolic system with localized nonlinear reaction terms, subject to the null Dirichlet boundary condition. We first give sufficient conditions for that the classical solution blows up in the finite time, secondly give necessary conditions and a sufficient condition for that two components blow up simultaneously, and then obtain the uniform blow-up profiles in the interior. Finally we describe the asymptotic behavior of the blow-up solution in the boundary layer. | LI Huiling & WANG Mingxin Department of Mathematics, Southeast University, Nanjing 210018, China Department of Mathematics, Xuzhou Normal University, Xuzhou 221116, China | 2005 | Science China Mathematics2005,48,2: | 9 |
| 15 | The upwind finite difference fractional steps method for combinatorial system of dynamics of fluids in porous media and its application显示文摘For combinatorial system of multilayer dynamics of fluids in porous media, the second order and first order upwind finite difference fractional steps schemes applicable to parallel arithmetic are put forward and two-dimensional and three-dimensional schemes are used to form a complete set. Some techniques,such as implicit-explicit difference scheme, calculus of variations, multiplicative commutation rule of difference operators, decomposition of high order difference operators and prior estimates, are adopted. Optimal order estimates in L2 norm are derived to determine the error in the second order approximate solution. This method has already been applied to the numerical simulation of migration-accumulation of oil resources. | 袁益让 | 2002 | Science China Mathematics2002,45,5: | 9 |
| 16 | Influence of desert mineral resource exploitation on the spatial structure of the urban system in Xinjiang显示文摘The strategic mineral resource exploration has important influence on the modern urbansystem in arid areas. Large amounts of investment on oil and gas industry have important effect onthe infrastructure which includes cities and communications, and this will become an importantfactor of changing the urban structure of Xinjiang. In the 1950s, Kelamayi and Dushanzi cities haveappeared by the petroleum exploration in the west of the Juggar Basin, which not only changedthe single role of Xinjiang oasis agricultural city but also made the distribution of cites broken fromnatural oasis for the first time, and the network trend of urban spatial structures emerged. In recentyears, the large-scale petroleum exploration in Tuha, Juggar and Tarim Basins gives local citiesmore chance of rapid development. Especially, a large-scale communication construction, with the552 km desert highway as representative, totally changed the traditional oasis spacial structure ofthe urban system in the Tarim Basin. The influence on the spacial structure of the urban system byoil exploration in a large-scale reserve basin can be divided into four stages. | 张小雷 | 2002 | Science China Earth Sciences2002,45,z1: | 9 |
| 17 | Differential topological characteristics of the DSR on injection space of electrical power system显示文摘This paper analyzes the differential topological characteristics of the dynamic security region (DSR) on injection space of electrical power system by differential topology theories. It is shown that the boundary of the DSR on injection space has no suspension and is compact, and there are no holes inside the DSR defined based on controlling unstable equilibrium point (UEP) method. The 10-generator, 39-bus New England Test System, is taken as an example to show these characteristics of the DSR on injection space. | 余贻鑫 曾沅 冯飞 | 2002 | Science China(Technological Sciences)2002,45,6: | 8 |
| 18 | Grey Problems of a Mechanical Transmission System in a Reliability Study显示文摘In the light of the Grey characters of reliability on a mechanical transmission system, Grey problems that could assist in the study on mechanical transmission system were analyzed. For example, the factors of time function,the factors of environment and the factors of people have some relationships with the system in this paper. And then, the methods and procedures, which were based upon the theory of Grey system, were elaborated. | LUO You-xin, CAI An-hui, ZHANG Long-ting, GUO Hui-xin Department of Mechanical Engineering, Changde Normal College, Changde 415003, P. R. China | 2001 | International Journal of Plant Engineering and Management2001,6,2: | 8 |
| 19 | Northwest trending tectonic belt in the middle Yanshan Orogenic Belt of northeast Hebei Province,North China:Tectonic evolution and geochronology显示文摘The northwest trending tectonic belt in the middle part of the Mesozoic intraplate Yanshan Orogenic Belt, northeast Hebei Province, is composed of thrusts, extensional faults, strike-slip faults and syntectonic sedimentations as well. The northeastward basement-involved major thrusting deformation occurred between 174Ma and 168MaBP and was followed by an intrusion of the granitic plutonic rocks. As a part of the post-thrusting extensional deformations a northwest extending volcano-sedimentation system of Late Jurassic and Early Cretaceous formed in the southwest side of the belt. These volcano-sedimentary sequences are divided into Tuchengzi Formation, Zhangjiakou Formation, Yixian Formation and Jiufotang Formation re- spectively. They are characterized by southeastward migration as a result of the increasing down-dip slip displacement along the major extensional fault toward the southeast of the belt. The provenance area of the Jiufotang Formation north to it experienced southwestward thrusting during and after its later sedimentation. The thrusting in this stage resulted in the formation of an asymmetric footwall syncline with vergence to SW in the Jiufotang Formation in the NE side of the basin. Finally a dextral strike-slip deformation occurred along the NW tectonic belt. The striking tectono-geomorphological features and present seismic activities along this belt indicate that it has been being active since Cenozoic era and is still in the active state at present. This northwest extending tectonic belt was following the same direction and location as the existing fault systems within the basement as revealed by former geological and geophysical studies. So it is reasonable to infer the Mesozoic deformation along this belt to be a result of reactivation of the basement structures in a favorable tectonic stress field. The reactivation of basement struc- tures might be taken as one of the mechanisms of intraplate deformation and orogeny. | ZHANG Changhou1,2, WU Ganguo1,2, WANG Genhou2, ZHANG Weijie2 & SONG Honglin2 1. Key Laboratory of Lithospheric Tectonics and Lithoprobing Technology, China University of Geosciences, Ministry of Education of China, Beijing 100083, China 2. School of Earth Sciences and Mineral Resources, China University of Geosciences, Beijing 100083, China | 2004 | Science China Earth Sciences2004,47,10: | 8 |
| 20 | 基于GIS的高频地波雷达回波信号的表达处理与显示显示文摘高频地波雷达的'距离-多普勒'(Range-Doppler,R-D)数据与'恒虚警率'(Constant False-AlarmRate,CFAR)检测结果数据存在非直观性的问题,本文针对此问题,分析了地波雷达回波数据特点以及结果形式,研究了采用地理信息系统(Geographic Information System,GIS)技术对回波数据进行显示分析,对R-D与CFAR检测结果进行表达,实现高频数据在GIS环境下的表达处理与显示。本文采用GIS的栅格表达'距离-多普勒'数据,采用矢量数据结构表达CFAR检测结果,实现了地波雷达检测信息的直观显示;研究了高频地波雷达数据中特定距离一维谱信号的提取,实现了基于距离值的目标CFAR检测查询;针对雷达数据量大、处理时间长的问题,采用多线程处理机制实现了高效实时显示和分析。 | 王瑞富 孔祥超 纪永刚 徐茂景 刘楠楠 陈丽丽 | 2015 | 海洋科学2015,39,7: | 8 |