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| 1 | OPTICAL PROPERTIES OF GeO_2 AND Ge NANOCRYSTALS显示文摘he co m pound m aterial of n m size particles Ge O2 Si O2 w as synthesied through hydrolysis of Si( O C2 H4) and Ge Cl4 . A heat treatm ent w as carried out for the sa m ples at 100 ~1200 ℃in air . Its optical property w as deter mined by U V Vis spectur m . We have found that theabsorption edge of spectru m shifted progressively to longer w avelengths . The quantu m size ef fect of nanocrystals appears because crystals gro w and energy of optical band gap reduces d ueto the influence of te m perature . By the analysis of X ray diffraction w e have observed theprocess in w hich the structure of particles changed fro m disorder into order . | Y.H.Zhou 1) ,Y.Y.Feng 2) and H.Y.Lu 2) 1)Department of Physics Nanjing Normal University, Nanjing 210097,China 2)Physics and Ch寁O P T I C A L P R O P E R T I E S O F Ge O2 A N D Ge N A N O C R Y S T A L S Y. H. Zhou1) , Y. Y. Feng2) | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，5： | 22 |
| 2 | Optimal controlled teleportation via several kinds of three-qubit states显示文摘The probability of successful controlled teleportation of an unknown qubit using a general three-particle state is investigated. The analytic expressions of maximal probabilities via several kinds of tripartite states are given, including a tripartite Greenberger-Horne-Zeilinger state and a tripartite W-state. | GAO Ting1,2, YAN FengLi2,3 & LI YouCheng3 1 College of Mathematics and Information Science, Hebei Normal University, Shijiazhuang 050016, China 2 Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany 3 College of Physics and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，10： | 9 |
| 3 | Visualization and quantification of water movement in porous cement-based materials by real time thermal neutron radiography:Theoretical analysis and experimental study显示文摘Water movement in porous cement-based materials is of great importance when studying their deterioration processes and durability.Many traditional methods based on mass changes,electricity or nuclear magnetic resonances are available for studying water transport in cement-based materials.In this research,an advanced technique i.e.thermal neutron radiography was utilized to achieve visualization and quantification of time dependent water movement including water penetration and moisture vapor in porous cement-based materials through theoretical analysis and experimental study.Because thermal neutrons ex-perience a strong attenuation by hydrogen,neutron radiography exhibits high sensitivity to small amounts of water.A neutron transmission analysis for quantitative evaluation of raw radiographic measurements was developed and optimized based on point scattered functions(PScF).The determinations of the real time and space dependent water penetration into uncracked and cracked mortar samples,as well as the drying process have been presented in this paper.It is illustrated that thermal neutron radiography can be a useful research tool for visualization and quantification of water movement in porous building materials.The obtained results will help us to better understand deteriorating processes of cement-based materials and to find ways to improve their durability. | ZHANG Peng1,WITTMANN F H1,2,ZHAO TieJun1,LEHMANN E3 & JIN ZuQuan1 1 Center for Durability & Sustainability Studies of Shandong Province,Qingdao Technological University,Qingdao 266033,China 2 Aedificat Institute Freiburg,Freiburg D-79100,Germany 3 Department of Spallation Neutron Source(ASQ),Paul Scherrer Institute,Villigen PSI CH-5232,Switzerland | 2010 | Science China(Technological Sciences)2010，53，5： | 6 |
| 4 | A New Integrated Design Method Based on Fuzzy Matter-Element Optimization显示文摘This paper puts forward a new integrated design met ho d based on fuzzy matter-element optimization.On the based of analyzing the mod el of multi-objective fuzzy matter-element , the paper defines the m atter-element weightily and changes solving multi-objective fuzzy optimization into solving dependent function K(x) of the single-objective optimization according to the optimization criterion. The paper particularly describes the realization approach of GA process of multi -objective fuzzy matter-element optimization: encode, produce initial populati on, confirm fitness function, select operator, etc. In the process, the adaptive macro genetic algorithms (AMGA) is applied to enhancing the evolution speed. Th e paper improves the two genetic operators: crossover and mutation operator. The modified adaptive macro genetic algorithms (MAMGA) is put forward simultane ously. It is adopted to solve the optimization problem. Three optimization methods, namely fuzzy matter-element optimization method, li nearity weighted method and fuzzy optimization method, are compared by using the table and figure, it shows that not only MAMGA is a little better than the AMGA , but also it reaches the extent to which the effective iteration generation is 62.2% of simple genetic algorithms (SGA). By the calculation of optimum exam ple, the improved method of genetic in the paper is much better than the method in reference of paper. | ZHAO Yan-wei 1, ZHANG Guo-xian 2 (1. College of Mechanical Engineering, Zhejiang University o f Technology, Hangzhou 310014, China 2. College of Mechanical & Electronic al Engineering, Shanghai University, Shanghai 200072, China) | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 5 |
| 5 | Research on the Characters of the Cutting Force in Vibration Cutting Particle Reinforced Metal Matrix Composites SiC_p/Al显示文摘In this paper, turning experiments of machining particle reinforced metal matri x composites(PRMMCs) SiC p/Al with PCD tools have been carried out. The cutting force characteristics in ultrasonic vibration turning compared with that in com mon turning were studied. Through the single factor experiments and multiple fac tor orthogonal experiments, the influences of three kinds of cutting conditions such as cutting velocity, amount of feed and cutting depth on cutting force were analyzed in detail. Meanwhile, according to the experimental data, the empirica l formula of main cutting force in ultrasonic vibration turning was conclude d. According to the test results, the cutting force is direct proportion to cutt ing depth basically according to the relation between cutting force and other fa ctors, which is similar to that of common cutting, so is the feed rate, but the influence is not so big. The influence of cutting speed is larger than that of f eed rate on cutting force because the efficient cutting time increases in vibrat ion cycle with the increase of cutting speed, which causes cutting force to incr ease. The research results indicate: (1) Ultrasonic vibration turning possesses much lower main cutting force than that in common turning when adopting smaller cutting parameters. If using larger cutting parameters, the difference will inco nspicuous. (2) There are remarkable differences of cutting force-cutting veloci ty characteristics in ultrasonic vibration turning from that in common turning m ainly because built-up edge does not emerge in ultrasonic turning unlike common turning in corresponding velocity range. (3) In ultrasonic vibration cutting, t he influence of cutting velocity on cutting force is most obvious among thre e cutting parameters and the influence of feed is smallest. So adopting lower cu tting velocity and larger cutting depth not only can reduce cutting force effect ively but also can ensure cutting efficiency. (4) The conclusions are useful in precision and super precision manufacturing thin-wall pieces. | LIU Chuan-shao 1, ZHAO Bo 1,2, GAO Guo-fu 1, JIAO F eng 1 (1. Department of Mechanical Engineering, Jiaozuo Institute of Techno logy, Henan 454000, China 2. Institute of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China) | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 3 |
| 6 | A Coupled Variable Coefficient Modified KdV Equation Arising from a Two-Layer Fluid System显示文摘A quite general coupled variable coefficient modified KdV (VCmKdV) equation in a two-layer fluid systemis derived by means of the reductive perturbation method.Making use of the CK's direct method,some similarityreductions of the coupled VCmKdV equation are obtained and their corresponding group explanations are discussed.Some exact solutions of the coupled equations are also presented. | GAO Yuan~1 and TANG Xiao-Yan~(1,2)~1 Department of Physics,Shanghai Jiao Tong University,Shanghai 200240,China~2 Institut Für Theoretische Physik IV,Fakultt für Physik und Astronomie,Ruhr-Universitt Bochum,D-44870 Bochum,Germany | 2007 | Communications in Theoretical Physics2007，，12： | 3 |
| 7 | Using soil surface gray level to determine surface soil water content显示文摘How to determine surface soil water content(SWC) quickly and accurately is fundamental in studying eco-hydrological processes and their modeling.Here we use laboratory experiments to determine surface SWC using soil surface gray level(SGL) values.A negatively exponential relationship exists between SGL and SWC,i.e.,SGL increases with the decrease of SWC.SGL can be estimated based on initial SGL value(surface gray level when SWC=0),SWC,and a surface roughness coefficient characterized by mean soil particle size.The variation range of SGL was larger than that of SWC,indicating that changes in SWC were enhanced in SGL,and that SGL would thus be sensitive to changes in soil water.At the 95% confidence level,SWC can be determined by using the relationship between SWC and SGL established by the experiments.The determination of SWC has a high precision when SWC was between dry and saturated. | ZHU YuanJun1,2,WANG YunQiang1,2 & SHAO MingAn1,2 1 State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau,Institute of Soil and Water Conservation,Northwest A & F University,Yangling 712100,China 2 Institute of Soil and Water Conservation,Chinese Academy of Sciences & Ministry of Water Resources,Yangling 712100,China | 2010 | Science China Earth Sciences2010，53，10： | 2 |
| 8 | Organic Light Emitting Diodes with Lithium Contained Alq3 as Electron Injection Layer显示文摘lNovel lithium doped tris 8 hydroxylquinoline aluminium(Alq3:Li) layer is deposited between emission layer and electron injection aluminium electrode as an electron injection assistant layer in different organic light emitting diodes(OLED) to lower the electron injection barrier. In these devices, Alq3 is used as emission layer, and a bilayer film of N,N bis (1 naphhyl) N,N diphenyl 1,1 biphenyle 4,4' diamine(NPB) and 4,4,4' tris(3 methyl phenylphenylamino) triphenylamine( m MTDATA) used as hole transport layer(HTL). The electroluminescent performance of devices with different thicknesses of Alq3∶Li shows that the insertion of the lithium doped Alq3 layer can reduce the turn on voltage by at least 2 volts, and the stability of devices with this lithium doped Alq3 layer is improved too. It can also change the efficiency of devices. Compared with an ultra thin lithium fluoride(LiF) layer, Alq3∶Li sheet gives similar effects but higher efficiency and can be much thicker and hence it is easier to control the deposition. | Zugang Liu 1,* and J. L. Pinto 21. Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PF, UK 2. Departamento de Física, Universidade de Aveiro, 3810 194 Aveiro, Portuga | 2002 | Chemical Research in Chinese Universities2002，18，2： | 2 |
| 9 | Fungui Paecilomyces:a new agent in laboratory animals显示文摘 | Kunstyr 1 Jelinek F Bitzenhofer U | 1997 | Lab Anim1997，31，1： | 1 |
| 10 | Acoustic transfer vectors for numerical modeling of engine显示文摘 | Gerard F Tournour M Masfi N Eleta 1 | 2002 | Sound and Vibration2002，，： | 1 |
| 11 | Ribosomally synthesized antimierobial peptides: their thnetlon, structure, biogenesis, and mechanism of action 显示文摘 | Nissen- Meyer J Nes 1 F | 1997 | Arch Microbiol1997，167，： | 1 |
| 12 | Successful posterior interlaminar fusion at the thoracic spine by sole use of beta-tricalcium phosphate显示文摘 | Knop C Sitte 1 Canto F | 2006 | Arch Or- thop Trauma Surg2006，126，3： | 1 |
| 13 | Gem('itabine plus cispl- atin for advanced transitional ('ell carcinoma of the urinary tract : a phase1 multicenter trial显示文摘 | Lorusso V Manzione 1 De Vita F | 2000 | J Urol2000，164，1： | 1 |
| 14 | Microscopic morphology and distribution of TiC phase in laser clad NiCrBSiC-TiC layer on titanium alloy substrate显示文摘 | Sun R L Mao 1 F Yang D Z | 2002 | Surface and Coatings Technology2002，155，： | 1 |
| 15 | A global best artificial bee col?ony algorithm for global optimization显示文摘 | GAO W F LIU S Y HUANG L 1 | 2012 | Journal of Computational and Applied Mathematics2012，236，11： | 1 |
| 16 | DEDD negatively regulates transforming growth factor-betal signaling by interacting with Smad3 显示文摘 | Xue 1 F Hua F Lv Q | 2010 | FEBS Lett2010，584，14： | 1 |
| 17 | Generation of isogenic pluripotent stem cells differing exclusively at two early onset Parkinson point mutations显示文摘 | Soldner F Laganière J Cheng A W Hockemeyer D Gao Q Alagappan 1 Khurana V Golbe L I | | 0，，02： | 1 |
| 18 | Rennet coagulation of skim milk and curd drainage:Effect of pH,casein concentration,ionic strength and heat treatment显示文摘 | Cé1ina D Marie-Hé1ène F Alice P | | 0，，： | 1 |
| 19 | Br(o)snsted ionic liquids:study of physico-chemicai properties and catalytic activity in aldol condensations显示文摘 | IGLESIAS M GONZALEZ-OLMOS R MEDINA 1 C F | | 0，，02： | 1 |
| 20 | The evolution of pediatric continuous renal replacement therapy显示文摘 | Garzotto F(1) Zanella M Ronco C | 2014 | Nephron Clin Pract2014，127，14： | 1 |
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