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| 1 | Thermodynamic functions of ZrW_2O_8 from its heat capacity显示文摘It is interesting to maximize the amount of information we can obtain from one experiment on a single sample.In obtaining all the thermodynamic properties of some materials from their experimental heat capacity data only,we aim to get the temperature-independent energy spectrum.However,all the practical measured energy spectra depend on the temperature of experiments.One promising method to obtain the temperature-independent energy spectrum is to solve the so-called specific heat-phonon spectrum inversion(SPI) problem.Here we show,by developing a new practical solution method of SPI,the phonon spectrum of the negative thermal expansion material ZrW 2 O 8 is obtained.This phonon spectrum is temperature-independent and almost method independent.Hence all the thermodynamic properties of ZrW 2 O 8,such as thermodynamic potential,entropy,Helmholtz free energy,etc.are obtained by heat capacity only. | Ji FengMin DAI XianXi STEVENS R GOATES J B | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，4： | 3 |
| 2 | A new solution method for black-body radiation inversion and the solar area-temperature distribution显示文摘The effective temperature of the solar photosphere is usually obtained according to the solar constant, based on the Stefan-Boltzmann law. However its temperature distribution is not homogeneous. A hopeful way to obtain the area-temperature distribution of the solar photosphere is to solve the Black-body Radiation Inversion (BRI) problem. In this paper, a new practical solution method for BRI is developed. The theoretical analysis and numerical calculations show the low-temperature distribution difficulty of BRI is solved by this new method. Then the area-temperature distribution of the solar photosphere is obtained, according to the measured absolute solar spectral irradiance. It is the first realization of BRI for a real system after almost three decades of efforts. The results are comparable to that from the Stefan-Boltzmann law. | JI FengMin DAI XianXi | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，11： | 3 |
| 3 | Orthogonality criteria for singular states and the nonexistence of stationary states with even parity for the one-dimensional hydrogen atom 显示文摘 | Dai Xianxi Dai Jixin Dai Jiqiong | 1997 | Phys Rev A1997，55，： | 1 |
| 4 | Bose-Einstein Condensation in Confined Geometry:Thermodynamic Mapping Study显示文摘 | Wen Tao Dai XianXi | 2003 | J Phys:Condensed Matter2003，，15： | 1 |
| 5 | CYLINDRICAL ENVELOPE SOLITARY WAVES显示文摘The method of multiple-scales is used to investigate the nonlinear modulation of capillary-gravity waves with cylindrical symmetry.We find that the evolution of wave-packets is described by a nonlinear schrödinger-like equation i(U+U/2r)+αUξξ+β|U|2U=0.Some exact and explicit cylindrical envelope solitary wave solutions are also obtained by means of variable transformations. | HUANG Guoxiang LOU senyue DAI xianxi | 1990 | Chinese Physics Letters1990，7，9： | 0 |
| 6 | GENERALIZATION TO CYLINDRICAL COORDINATE SYSTEM FOR THE HIGHER ORDER KDV AND KP EQUATION显示文摘Two new model equations which we call a higher order cylindrical KdV equation and a higher order cylindrical KP equation are proposed when we consider the 2-dimensional modulation of water waves with surface tension in cylindrical coordinate system.Some exact (2+1)-dimensional solitary wave solutions have been obtained by relating them to the higher order KdV equation through an appropriate variable transformation. | HUANG Guoxiang DAI Xianxi LOU Senyue | 1990 | Chinese Physics Letters1990，7，2： | 0 |
| 7 | Water Quality Research and Evaluation for Campus Landscape Water Based on ArcGIS显示文摘 | Chunlong Li Gang Yu Xianxi Xiang Li Dai | 2014 | 环境科学前沿(中英文版)2014，3，2： | 0 |
| 8 | Soliton and Soliton-Pair as the Intrinsic Phonon Localized Modes in an Anharmonic Monoatomic Chain显示文摘With the use of coherent-state method,a quantum approach for the intrinsic phonon localized modes in an anharmonic monoatomic chain is given.It is shown that the envelope soliton with zero group velocity can exist in the lattice and that the frequency of carrier wave is above the top of the frequency band.A new type of the intrinsic phonon localized mode which we call the soliton-pair intrinsic localized mode in the chain is also reported. | HUANG Guoxiang LI Hongfang DAI Xianxi | 1992 | Chinese Physics Letters1992，9，3： | 0 |
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