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Changchun, China

Changchun Normal University is a university in Changchun, Jilin, People's Republic of China. Wikipedia.

Zhang L.,CAS Changchun Institute of Optics and Fine Mechanics and Physics | Yue S.,Changchun Normal University | Li B.,CAS Changchun Institute of Optics and Fine Mechanics and Physics | Fan D.,CAS Changchun Institute of Optics and Fine Mechanics and Physics
Inorganica Chimica Acta | Year: 2012

In this paper, we report a series of [Cu(N-N)(P-P)]BF 4 complexes based on two phosphorous ligands and three 1,10-phenanthrolin derived diimine ligands, including their syntheses, characterizations, crystal structures. Their photophysical properties were experimentally measured and theoretically analyzed by time-dependent density functional theory (TD-DFT). It is found that the introduction of too many fused phenyl rings into diimine ligand leads to luminescence absence of corresponding [Cu(N-N)(P-P)] + complexes at room temperature. A detailed analysis suggests that the thermal activated electron-configuration transformation between the [Cu(N-N)(P-P)] + triplet metal-to-ligand-charge-transfer ( 3MLCT) state and the lowest lying excited state of its diimine ligand ( 3LC) is responsible for the luminescence quenching. © 2011 Elsevier B.V. All rights reserved.

Liang S.,Changchun Normal University | Liang S.,Jilin University | Zhang J.,Nanjing Normal University
Nonlinear Analysis: Real World Applications | Year: 2014

In this paper, we consider the existence and multiplicity of solutions of Kirchhoff type problems with critical nonlinearity in R3:- ε2(a+b∫R3|u|2dx) Δu+V(x)u=K(x)|u|4u+h(x,u), (t,x) â̂̂R×R3. Under suitable assumptions, we prove that this has at least one solution and for any mâ̂̂N, it has at least m pairs of solutions. © 2013 Elsevier Ltd. All rights reserved.

Lu Y.-F.,Changchun Normal University
Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis | Year: 2013

In the present study, corn canopy is the objective. Firstly the polarization of corn canopy was analyzed based on polarization reflection mechanism; then, the polarization of canopy was measured in different growth period at nadir before heading. The result proved the theoretical derivation that the light reflected from corn canopy is polarized, and found that in the total reflection the polarization light accounts for up to 10%. This shows that polarization measurement provides auxiliary information for remote sensing, but also illustrates that the use of the polarization information retrieval of atmospheric parameters should be considered when the surface polarization affects on it.

Liang S.,Changchun Normal University | Zhang J.,Nanjing Normal University
Computers and Mathematics with Applications | Year: 2011

In this paper, we consider the following nonlinear fractional three-point boundary value problem D0+αu(t)+f(t,u(t))=0,0

Liang S.,Changchun Normal University | Zhang J.,Nanjing Normal University
Mathematical and Computer Modelling | Year: 2011

In this paper we consider the following m-point fractional boundary value problem on infinite interval D0+ αu(t) + a(t)f(t,u(t))=0,0

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