Some Similarity Reduction Solutions to Two-Dimensional Incompressible Navier-Stokes Equation

We investigate the symmetry reduction for the two-dimensional incompressible Navier Stokes equation in conventional stream function form through Lie symmetry method and construct some similarity reduction solutions. Two special cases in [D.K. Ludlow, P.A. Clarkson, and A.P. Bassom, Stud. Appl. Math. 103 （1999） 183] and a theorem in [S.Y. Lou, M. Jia, X.Y. Tang, and F. Huang, Phys. Rev. E 75 （2007） 056318] are retrieved.     

元素核合成

简单介绍了元素的核合成理论发展的历史和现况．The development history of the nucleosynthesis theory of elements, which was presented by E. M. Burbidge. G. R. Burbidge, W. A. Fowler, F. Hoyle and A. G. W.Cameron, and the progress of this theory during the past 40 years are introduced.     

Analytic subject index to 2010

43.05. History; 43.10. General; 43.15. Standards; 43.20. General linear acoustics; 43.25. Nonlinear acoustics; 43.28. Aeroacoustics and atmospheric sound; 43.30. Underwater sound; 43.35. Ultrasonics, quantum acoustics, and physical effects of sound; 43.38. Transduction,     

内耗研究的历史评述

通过介绍几位在内耗领域的先驱研究者:C.Zener,葛庭燧,P.G.Bordoni ,J.L.Snoek,评述了内耗研究的进展.也介绍了日本研究者的相关工作.     

Reexamining Security of Improved Multiparty Quantum Secret Splitting and Quantum State Sharing

In a recent letter [H.F. Wang, X. Ji, and S. Zhang, Phys. Lett. A 358 （2006） 11], an improvement of the multiparty quantum secret splitting and quantum state sharing protocol [F.G. Deng, et al., Phys. Lett. A 354 （2006） 190.] was presented. We study the security of the improved protocol and find that two or more dishonest participants may recover the secret from the dealer. Hence we further modify the improved protocol, which make it stand against this kind of attack.     

Energy transfer ultraviolet photodetector with 8-hydroxyquinoline derivative-metal complexes as acceptors

We choose 8-hydroxyquinoline derivative-metal complexes(Beq,Mgq,and Znq) as the acceptors(A) and 4,4',4"-tri-(2-methylphenyl phenylamino) triphenylaine(m-MTDATA) as the donor(D) respectively to study the existing energy transfer process in the organic ultraviolet(UV) photodetector(PD),which has an important influence on the sensitivity of PDs.The energy transfer process from D to A without exciplex formation is discussed,differing from the working mechanism of previous PDs with Gaq[Zisheng Su,Wenlian Li,Bei Chu,Tianle Li,Jianzhuo Zhu,Guang Zhang,Fei Yan,Xiao Li,Yiren Chen and Chun-Sing Lee 2008 Appl.Phys.Lett.93 103309)]and REq[J.B.Wang,W.L.Li,B.Chu,L.L.Chen,G.Zhang,Z.S.Su,Y.R.Chen,D.F.Yang,J.Z.Zhu,S.H.Wu,F.Yan,H.H.Liu,C.S.Lee 2010 Org.Electron.111301]used as an A material.Under 365-nm UV irradiation with an intensity of 1.2 mW/cm~2,the m-MTDATA:Beq blend device with a weight ratio of 1:1 shows a response of 192 mAAV with a detectivity of 6.5 × 10~(11) Jones,which exceeds those of PDs based on Mgq(146 mA/W) and Znq(182 mA/W) due to better energy level alignment between m-MTDATA/Beq and lower radiative decay.More photophysics processes of the PDs involved are discussed in detail.     

美国伦斯勒理工学院物理系,应用物理和天文学系招生信息(英文)

Rensselaer Polytechnic Institute,Troy,NewYork,U.S.A.JOIN OUR GRADUATE SCHOOL IN PHYSICS Ph.D.in Department of Physics,Applied Physics,and Astronomy Areas of research include Condensed Matter,Optics,Particle,Astrology,and Biophysics.     

超导研究大事记

 1877年.氧被液化.1898年.英国物理学家J.杜瓦液化氢.1908年.荷兰物理学家卡·翁内斯液化氢,获得绝对温度4.2开以下的低温.1911年.卡·翁内斯在莱顿实验室发现超导现象,这是在获得绝对温度4.2开以下低温时,发现汞的电阻突然变为零,在排除其它可能之后,翁内斯确认这是真实效应,从此,超导物理学诞生了.     

第三届国际高温超导材料及超导机理研讨会简介

 这是本刊记者芜茗在1991年中科院青年学者物理学讨论会上所约的稿件.作者李晓光,31岁,六安人,1982年毕业于安徽大学,1982-1988年在中科院固体所攻读硕士及博士学位,师从何怡贞教授.1989-1990年在中国科大进行博士后研究工作,1990年提升为副教授.已在Phys.Rev.B,J.Appl.phys.,J.phys.,phys.Stat.Sol.,物理学报等国内外核心刊物发表论文35篇.作者陈兆甲,50岁,南京人,中国科大物理系副主任,教授,该核超导中心主任.     

美国伦斯勒理工学院物理系,应用物理和天文学系招生信息(英文)

Rensselaer Polytechnic Institute,Troy,NewYork,U.S.A. JOIN OUR GRADUATE SCHOOL IN PHYSICS Ph.D.in Department of Physics,Applied Physics,and Astronomy Areas of research include Condensed Matter,Optics,Particle,Astrology,and Biophysics. Teaching,research assistantships,and fellowships are available.     

美国伦斯勒理工学院物理系，应用物理和天文学系招生信息

Rensselaer Polytechnic Institute,Troy,NewYork,U.S.A. JOIN OUR GRADUATE SCHOOL IN PHYSICS Ph.D.in Department of Physics,Applied Physics,and Astronomy Areas of research include Condensed Matter,Optics,Particle,Astrology,and Biophysics. Teaching,research assistantships,and fellowships are available.     

现代物理信息

 Phys.Rev.Lett.（物理评论通讯）19911.证实极度丰中子核中存在双中子用反应（π^-,π⁺）与（π^-,P）造成极度丰中子核,通过测连续丢失质量谱而证实,（K.K.Seth et al.,Vol.66 No.19）.     

美国伦斯勒理工学院物理系,应用物理和天文学系招生信息(英文)

Rensselaer Polytechnic Institute,Troy,NewYork,U.S.A. JOIN OUR GRADUATE SCHOOL IN PHYSICS Ph.D.in Department of Physics,Applied Physics,and Astronomy Areas of research include Condensed Matter     

美国伦斯勒理工学院物理系，应用物理和天文学系招生信息(英文)

Rensselaer Polytechnic Institute,Troy,NewYork,U.S.A. JOIN OUR GRADUATE SCHOOL IN PHYSICS Ph.D.in Department of Physics,Applied Physics,and Astronomy Areas of research include Condensed Matter,Optics,Particle,Astrology,and Biophysics. Teaching,research assistantships,and fellowships are available.     

Analytic subject index to 2013

43.05. History; 43.10. General; 43.15. Standards; 43.20. General linear acoustics; 43.25. Nonlinear acoustics; 43.28. Aeroacoustics and atmospheric sound; 43.30. Underwater sound; 43.35. Ultrasonics, quantum acoustics, and physical effects of sound; 43.38. Transdnction, acoustical devices for the gen- eration and reproduction of sound; 43.40. Structural acoustics and vibration; 43.50. Noise： its effects and control;     

Ho and Ti co-doped BiFe03 multiferroic ceramics with enhanced magnetization and ultrahigh electrical resistivity

Bio.9HOo.lFeo.9503 and Bio.9HOo.lFeo.9Tio.0503 ceramics were prepared and compared to reveal the effects of Ho and Ti codoping in BiFeO3. X-ray diffraction indicated that both ceramics had a high rhombohedral perovskite phase content, and microstructural analyses showed that the grains of the Bio.9HOo.lFeo.9Tio.0503 ceramics were much smaller than those of Bio.9HOo.lFeo.9503. An electrical resistivity of more than 1 × 1014.cm at room temperature, and a magnetic hysteresis loop with a remnant magnetization 2Mr of 0.485 emu/g were obtained for Bi0.9HO0.1Fe0.9Ti0.0503; both were much higher than those of Bio.9Hoo.1Feo.9503. Changes in the defect subsystem of BiFeO3 induced by Fe-deficiency and （Ho,Ti） codoping are proposed as being responsible for the improvement in the properties.     

Classical Communication and Entanglement Cost in Preparing a Class of Multi-qubit States

Recently, several similar protocols [J. Opt. B 4 （2002） 380; Phys. Lett. A 316 （2003） 159; Phys. Lett. A 355 （2006） 285; Phys. Lett. A 336 （2005） 317] for remotely preparing a class of multi-qubit states （i.e, α[0...0〉 ＋β[1... 1〉） were proposed, respectively. In this paper, by applying the controlled-not （CNOT） gate, a new simple protocol is proposed for remotely preparing such class of states. Compared to the previous protocols, both classical communication cost and required quantum entanglement in our protocol are remarkably reduced. Moreover, the difficulty of identifying some quantum states in our protocol is also degraded. Hence our protocol is more economical and feasible.     

Two Approaches for Indirect Teleportation with Partially Entangled States

Teleportation of a qubit with two partially entangled qubit states linking three nodes as quantum channels is extensively studied via the usual ancilla method. With the method two realization approaches, i.e., the node progression approach and the global accumulation approach, are presented. Their resource consumptions, operation complexities, and el~ciencies axe evaluated and compared. It is found that the latter approach is better than the former one besides the error is partially self-corrected. The latter approach is further improved so that two merits are resultant. The improved version is compared with a similar protocol [M.Y. Wang and F.L. Yah, Eur. Phys. J. D 54 （2009） 111]. Their merits and additional costs are exposed.     

ANALYTIC SUBJECT INDEX ACOUSTICAL PAPERS IN CHINA

0. GeneralThe advances in power ultrasonics,Lin Zhongmao,Acoustic Progress,3(1984),No.4,1.Recent development of the research on the acoustical qualities of halls in Japan.Wang Bing- lin,Acoustic Progress,3(1984),No.4,13.Development of research on evaluation of acoustical qualities of halls,Liu Xiaotu,Acoustic Progress,3(1984),No.4,32.The recent developments and trend in disk and phongraph,Audio Engineering,1983,No.2,41.     

Generation of entanglement molecules via weak coherent field in cavity QED

This paper presents a method for generating entanglement molecules, which is introduced by Dur (2001 Phys. Rev. A). In this scheme, N ladder-type three-level atoms are sent through a resonant weak coherent cavity field, then the system states are measured. And the system field may collapse onto some possible types of entanglement molecules. Meanwhile it discusses about the interaction time from the experimental point of view, and compare the result with the previous scheme proposed by Huang (2004 J. Phys. B: At. Mol. Opt. Phys.).