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| 1 | 铝、镁轻合金中的稀土显示文摘综述了稀土镁和稀土铝合金的晶体化学、热力学和相图数据,根据其应用前景特别注意了富镁、富铝稀土合金及添加稀土对合金性能的影响,报道了若干稀土镁、稀土铝及含两个不同稀土的镁、铝合金的研究结果。对富镁、富铝的二元和三元合金相的结晶化学及形成规律进行了总结和讨论,并对有确定结构的合金精细设计和可能的应用提出了建议。 | Ferro R, Saccone A, Borzone G( Division of General and Inorganic Chemistry and Metallurgy Department of Chemistry, University of Genova, Dodecaneso 31,I 16146 Genova, Italy ) | 1997 | 中国稀土学报1997，15，3： | 36 |
| 2 | Randomization of classical inference patterns and its application显示文摘By means of randomization, the concept of D-randomized truth degree of formulas in two-valued propositional logic is introduced, and it is proved that the set of values of D-randomized truth degree of formulas has no isolated point in [0,1]. The concepts of D-logic pseudo-metric and D-logic metric space are also introduced and it is proved that there is no isolated point in the space. The new built D-randomized concepts are extensions of the corresponding concepts in quantified logic. Moreover, it is proved that the basic logic connectives are continuous operators in D-logic metric space. Lastly, three different types of approximate reasoning patterns are proposed. | WANG GuoJun1,2 & HUI XiaoJing1,31 Institute of Mathematics, Shaanxi Normal University, Xi’an 710062, China 2 Research Center for Science, Xi’an Jiaotong University, Xi’an 710049, China 3 College of Mathematics and Computer Science, Yan’an University, 716000, China | 2007 | Science in China(Series F)2007，50，6： | 26 |
| 3 | Hydrodynamics of a Newly China-Made Jiuling Bileaflet Heart Valve Prostheses显示文摘Jiuling bileaflet prosthetic heart valve is manufactured in compliance with the national standard of P.R.C. GB12279 90. This mechanical heart valve substitute is constructed entirely of solid low temperature pyrolytic carbon. There is no graphite substrate within the leaflets or orifice. This prosthesis presents with satisfactory histocompatibility and induces little hemocoagulation around it. Objective: This study aimed to assess the hydrodynamic function of the newly China made Jiuling bileaflet heart valve prostheses. Methods: Jiuling valve has been tested in a pulsatile flow simulator in the aortic position. The testing condition was set at the pulsatile frequency of 55, 75, and 100 beats/min and a constant cardiac output of 4 L/min. The mean pressure differences, leakage volumes and closing volumes across each valve, and the effective orifice areas have been analyzed. Results: The Jiuling heart valves prosthesis had the lowest pressure difference at any given tissue annulus diameter. The mean pressure difference of all the Jiuling valves decreases with increasing the tissue annulus diameter or pulse frequency, and is in the range of below 10 mmHg. CarboMedics (CarboMedics, Inc., Austin, Tex.) is similar to that of the 21 mm and 23 mm Jiuling heart valves at the given pulse rate under 4 L/min. C L tilting disc valve (Lanzhou CarboMedics Inc., China) is similar to that of the 23 mm Jiuling heart valve. The effective orifice area of the Jiuling mechanical valve increases with increasing the tissue annulus diameter or pulse frequency. CarboMedics and C L tilting disc valve is similar to that of the 21 mm and 23 mm Jiuling heart valves. The Closing volume of the Jiuling prosthetic cardiac valves increases with increasing the tissue annulus diameter, but decreases with increasing the pulse frequency, and is in the range of below 11% (normalized by stroke volume). CarboMedics is below 16.5% of stroke volume; and C L tilting disc valve is below 7.5%. The leakage volume of the Jiuling prosthetic cardiac valves increases with increasing the tissue annulus diameter, but decreases with increasing the pulse frequency, and are in the range of below 28.9% (normalized by stroke volume). The leakage volume of CarboMedics is higher than that of the same sized 25 mm Jiuling valve, and the C L tilting disc valve is also higher than that of Jiuling valve at 4 L/min. Conclusion: For a given tissue diameter, the Jiuling valve showed significantly better hemodynamic characteristics. The material used in the construction is biocompatible, durable, and thromboresistant. The design permits light weight, low profile, and high ratio of flow area to tissue annulus diameter. | CHU Yin ping 1,CHEN Ru kun 2,FAN Yu bo 3 , PU Fang 31 Department of Thoracic & Cardiovascular Surgery Second Hospital Affiliated Shanxi Medical University, Taiyuan 030001,China 2 Second Affiliated Hospital of Zhejiang University Medical | 2000 | Chinese Journal of Biomedical Engineering(English Edition)2000，9，4： | 8 |
| 4 | “十五”期间电力信息化建设的主要目标和任务——陆延昌副总经理在国家电力公司信息化工作会议上的工作报告节选显示文摘 | Lu Yanchang State Power Corporation of China,Beijing10 0 0 31,China | 2001 | 电力系统自动化2001，25，21： | 5 |
| 5 | 175型无橡胶元件涡轮钻具的研制与试验显示文摘介绍了江汉石油学院井下工具研究室研制的175型无橡胶元件涡轮钻具的简况,重点叙述了这种涡轮钻具的结构特点、涡轮叶栅与叶型设计,以及涡轮节和支承节的结构设计,给出了技术性能指标。这种无橡胶元件的涡轮钻具,采用整体式4支点金属滚动球轴承、径向TC轴承、下轴悬挂式涡轮节和大扭矩叶型,具有中速、低压降等特点。现场试验表明,175型涡轮钻具的性能满足目前钻井工艺和钻井泵的要求,用它快速钻井可提高井身质量和机械钻速,缩短建井周期,减少套管磨损,降低钻井成本。 | Downhole Tool Research Section of Jianghan Petroleum University( Jingzhou City, Hubei Province ). , 1999, 27(12): 31~33 | 1999 | 石油机械1999，27，12： | 5 |
| 6 | The Impact on Environmental Kuznets Curve by Trade and Foreign Direct Investment in China显示文摘Based on data of trade, foreign directinvestment (FDI), economic development andenvironmental conditions in China’s 30 provincesbetween 1990-2002, this paper deals with the impacton Environmental Kuznets Curve (EKC) of tradeand FDI in China. The results show no direct impacton EKC of trade, on the one hand. However, tradecontributes significantly to economic growth, andhas played a positive role in introducing advancedpollution prevention technology and environmentalmanagement methodology to China. Therefore, aproactive trade policy will help solve the environmentalpollution problem brought by economic growth. Onthe other hand, there is a positive correlation betweenFDI and pollutant emission, which proves that FDIdoes have some negative influence on environmentin China due to hasty introduction of foreign capitaland inadequate environmental management systemin China. | Yang Haisheng 1, Jia Jia 2, Zhou Yongzhang 1& Wang Shugong 1,31 Center for Earth Environment & Resources, Zhongshan University, Guangzhou, 5102752 Lingnan College, Zhongshan University, Guangzhou, 5102753 Institute of Environmental Science, Zhongshan University, Guangzhou, 510275 | 2005 | Chinese Journal of Population,Resources and Environment2005，3，2： | 4 |
| 7 | NUMERICAL SIMULATION OF ATOMIZATION GAS FIELDS IN VARIOUS ATOMIZING PROCESSES显示文摘A Computational Fluid Dynamics Software was used to calculate the atomizing gas fields generated by a self-designed atomizer and to analyze the effects of key atomizing variables such as gas pressure and protrusion length of delivery tube on the gas flow state at the tip of or inside the delivery tube. Increasing the length of delivery tube to a certain extent, the eddy flow region with positive pressure moves away from the tip of delivery tube, which is favorable to achieve the effective atomization of the melt. | F.Y. Cao, J.F. Sun, C.S. Cui, J. Shen and Q.C. LiNational Key Laboratory of Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001,ChinaManuscript received 10 December 2001 in revised form 31 January 2002 | 2002 | Acta Metallurgica Sinica(English Letters)2002，15，3： | 3 |
| 8 | The Urbanization Pattern of China in the 21st Century显示文摘The 21st century is referred to as a'century for cities' or 'era for cities' and China hasalso speeded up its process of urbanization. It is veryimportant to choose a scientific urbanization patternto exert the function of cities and realize our dreamfor China to become a powerful modernized country.It’s concluded from history since 1800 that the patternof the world urbanization has transformed from'extensive' to 'intensive'. However, it is still anextensive pattern in China, and there are manyproblems behind the splendid achievements, reflectedon the urbanization process of our country since1949. Today, sustainable development and theknowledge economy are the themes of the cities; itis inevitable to change our urbanization pattern.Based on the dialectic relationship of quality andquantity, the article points out that urbanizationshould not only focus on quantity but also on qualityin China. High quality and multiform urbanizationpattern is an inevitable choice of China, and thedevelopment of the region can also be exalted by theradiation of the cities. But what’s the real meaningof the new pattern? What’s its difference from thewestern countries’? The article discusses its contentaccording to the reality of China. | Wang Chengxin 1,2, Yao Shimou 1 & Wang Gefang 31 Nanjing Institute of Geography & Limnology, the Chinese Academy of Sciences, Nanjing 210008, China 2 Graduate School, the Chinese Academy of Science, Beijing 100039, China 3 Shandong Party School of the Communist Party, Jinan 250021, China | 2005 | Chinese Journal of Population,Resources and Environment2005，3，2： | 2 |
| 9 | Polycomb group proteins and their roles in carcinogenesis显示文摘In the cell nucleus,DNA is wound around histone proteins,which are then packed together to form chromatin.Histones can be chemically tagged by methyl and acetyl groups.Polycomb group (PcG) proteins attach methyl groups to genes,which block their activity.This is similar to the attachment of methyl groups to gene promoters by DNA methyltransferases (DNMTs).This action is directly linked with tumor initiation and metastasis via the promotion of anti-senescence and anti-apoptosis pathways,and by facilitating epithelial mesenchymal transition (EMT).Cell fate transcriptional factors (CFTFs) and long non-coding RNAs (long ncRNAs) recruit PcG proteins to the promoters of tumor suppressor genes,resulting in epigenetic gene silencing by influencing chromatin structure and DNA accessibility.Thus,PcG proteins are potential diagnostic markers and targets for new chemoprevention and therapeutic strategies. | XIAO LanBo 1,2,3,TAO YongGuang 1,2,3,LI LiLi 1,2,3,4 & CAO Ya 1,2,31 Key Laboratory of Carcinogenesis of Ministry of Health,Xiangya School of Medicine,Central South University,Changsha 410078,China 2 Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education,Xiangya School of Medicine,Central South University,Changsha 410078,China 3 Cancer Research Institute,Xiangya School of Medicine,Central South University,Changsha 410078,China 4 Cancer Epigenetics Laboratory,State Key Laboratory in Oncology in South China,Chinese University of Hong Kong,Hong Kong 999077,China | 2012 | Chinese Science Bulletin2012，57，18： | 2 |
| 10 | Impact of thickness of GaN buffer layer on properties of AlN/GaN distributed Bragg reflectors grown by metalorganic chemical vapor deposition显示文摘We studied the impact of the thickness of GaN buffer layer on the properties of distributed Bragg reflector (DBR) grown by metalorganic chemical vapor deposition (MOCVD). The samples were characterized by using metallographic microscope, transmission electron microscope (TEM), atomic force microscopy (AFM), X-ray diffractometer (XRD) and spectrophotometer. The results show that the thickness of the GaN buffer layer can significantly affect the properties of the DBR structure and there is an optimal thickness of the GaN buffer layer. This work would be helpful for the growth of high quality DBR structures. | WU ChaoMin1, SHANG JingZhi1, ZHANG BaoPing1,2, ZHANG JiangYong1,3, YU JinZhong1,3 & WANG QiMing1,31 Department of Physics and Semiconductor Photonics Research Center, Xiamen University, Xiamen 361005, China 2 Pen-Tung Sah Micro/Nano Technology Research Center, Xiamen University, Xiamen 361005, China 3 State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China | 2010 | Science China(Technological Sciences)2010，53，2： | 2 |
| 11 | Outsmarting cancer:an international brainstorm in Guangzhou显示文摘Cancer is the most deadly disease in the United States.In developing countries such as China, cancer is increasingly prevalent as a cause of death.The “war against cancer” that was initially declared in the United States has become a global war that requires an alliance of world-wide cancer researchers.As part of such an effort, the Second Guangzhou International Symposium on Oncology was held on May 20-22, 2011, in Guangzhou, China. | Chao-Nan Qian 1,2 and Wei Zhang 31 Laboratory of Cancer and Developmental Cell Biology,Van Andel Research Institute,Grand Rapids,MI 49503,USA 2 State Key Laboratory of Oncology in South China,Sun Yat-sen University Cancer Center,Guangzhou,Guangdong 510060,P.R.China 3 Department of Pathology,University of Texas MD Anderson Cancer Center,Huston,TX 77030,USA. | 2011 | Chinese Journal of Cancer2011，30，8： | 2 |
| 12 | Analgesia with sevotlurane dur- ing labour:I Determination of the optimum concentration 显示文摘 | Y eo 31 Holdcrott A Y entls bM et at | 2007 | Br An- aesth2007，98，： | 1 |
| 13 | 显示文摘 | 肖静.? 试论文物管理工作中藏品的科学保护与保养(J)华章. 2011 (31) | 2011 | 华章2011，，31： | 1 |
| 14 | Progression from macular retinoschisis to retinal detachment in highly myopic eyes is associated with outer lamellar hole formation 显示文摘 | Shimada N Ohno-Matsui K Yoshida T et 31 | 2008 | Br J Ophthalmol2008，2，6： | 1 |
| 15 | 某型飞行器表面热防护涂料的性能改进研究,航空材料学报显示文摘 | 李晓升 31(z1) | | 0，，： | 1 |
| 16 | 2001 SCCM/ESICM/ACCP/ ATS/SIS International Sepsis Definitions Conference,Marshall JC,Crit Care Med显示文摘 | Levy MM Fink MP et al 31 (4) | | 0，，： | 1 |
| 17 | Role of pertussis toxin-senxitive G-proteins in the analgesic and anesthetic action of α2-adrenergic agonists in the rat显示文摘 | Hayashi Y Rabin BC Guo TZ et 31 | 1995 | Anethesiology1995，83，4： | 1 |
| 18 | Transient acute flaccid paralysis and seizures associated with rotavirus gastroenteritis in a child显示文摘 | Ezgi ~)zalp T ti rkan Aydln-Teke Grin )31 Tantr | 2012 | The Turkish Journal of Pediatrics2012，54，： | 1 |
| 19 | Role of eitlux pump(s) in intrinsic resistance of Pseudomorms aeruginosa: active efflux as a contributing factor to beta-lactam resistance 显示文摘 | LI X Z MA D LIVERMORE D M et ' 31 | 1994 | Antimicrobial agents and chemotherapy1994，38，8： | 1 |
| 20 | 显示文摘 | 徐金丽.? 初中英语任务性学习初探(J)科教新报(教育科研). 2011 (31) | 2011 | 科教新报(教育科研)2011，，31： | 1 |
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