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Journal of Jilin University Science Edition
ISSN 1671-5489
CN 22-1340/O
主 任:韩啸
编 辑:赵立芹 王健 单凝 李琦
电 话:0431-88499428
E-mail:sejuj@jlu.edu.cn
地 址:长春市南湖大路5372号
    (130012)
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Table of Content
26 September 2013, Volume 51 Issue 05
ExistenceUniqueness Theorem of Solutions toEquation Involving the Distribution
YANG Huimin, YE Guoju, ZHOU Xueyuan, ZHOU Hao, WANG Ou
Journal of Jilin University Science Edition. 2013, 51 (05):  749-754.  DOI: 10.7694/jdxblxb20130501
Abstract ( 410 )   PDF (311KB) ( 480 )  

The authors discussed the differential equation involving the distributional derivative x′=f(x,t) using the properties and methods
 of generalized ordinary differential equations. Then used the results of the generalized ordinary differential equations to prove the existence and uniqueness theorem of solutions to differential equation involving the distributional derivative.

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Boundedness of Higher Order Commutators ofn-Dimensional Fractional Hausdorff Operators
REN Zhuanxi, TAO Shuangping
Journal of Jilin University Science Edition. 2013, 51 (05):  755-762. 
Abstract ( 209 )   PDF (352KB) ( 512 )  

The n-dimensional fractional Hausdorff operators HlΦ were defined. With the aid of  JohnNirenberg inequalities about the CMO and Lipschitz functions, the boundedness of higher order commutators generated by HlΦ and CMO  or Lipschitz functions Hl,mΦ,b was established on Lebesgue spaces, Herz spaces, and MorreyHerz spaces respectively.

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TwoDimensional Wavelet with Tectonic Scale a and FourDirection
Journal of Jilin University Science Edition. 2013, 51 (05):  763-782. 
Abstract ( 237 )   PDF (589KB) ( 201 )  

On the basis of twodirection wavelet theory, a fourdirection wavelet with tectonic scale a was constructed by tensor product. Moreover, MRA, orthogonal and biorthogonal conditions of this twodimensional wavelet were given, and the relevant properties of this twodimensional wavelet
 were shown in the conclusion.

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Homological Method on Computations of BifurcationNormal Form and Universal Unfolding
PENG Guo jun, CHEN Chao tian
Journal of Jilin University Science Edition. 2013, 51 (05):  783-788. 
Abstract ( 252 )   PDF (352KB) ( 340 )  

We investigated the computations of bifurcation normal form and universal unfolding with  the homological method. For the double\|zero bifurcation with Z2-symmetry, we gave the homological equation, and derived the explicit computational formulae of normal form, and constructed the linear algebra equations for universal unfolding. Finally, we took a modified  van der Pol  system as an example to show the advantages of this method.

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A PredictorCorrector InteriorPoint Algorithm forP*(κ)Linear Complementarity Problems
LIU Xinze, LIU Hongwei, LIU Changhe
Journal of Jilin University Science Edition. 2013, 51 (05):  789-794. 
Abstract ( 167 )   PDF (349KB) ( 260 )  

Based on modifying the search direction of neighborhoodfollowing interiorpoint algorithm for linear programming, a new infeasible predictorcorrector interiorpoint algorithm for P*(κ)linear complementarity problem (LCP) was presented. The facts that P*(κ)LCP is nonmonotone and the corresponding search directions is nonorthogonal make the convergence analysis of the presented algorithm more complex. We have obtained the best
known iteration complexity bound of the proposed algorithm so far, i.e., O((1+κ)5/2nL), where κ is the handicap of the problem. Numerical results show that the algorithm is feasible.

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Multi-band Subdivision Algorithm of Regular Verticesof Triangula
ZHAO Yiwu, LOU Yan, LI Qiang, ZHAN Yang, LIANG Xuezhang
Journal of Jilin University Science Edition. 2013, 51 (05):  795-801. 
Abstract ( 180 )   PDF (1973KB) ( 362 )  

The calculational methods for multiband subdivision masks of regular vertices of triangular mesh were derived from the Fourier transform refinement equation of the Bspline base of S24(Δ) via the inverse Fourier transformation and valuation of four parameters. It was also confirmed that every new generated point in a triangle is the linear combination of the vertices of the first triangle ring around the triangle.

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FoldHopf Bifurcation Analysis on a Food Chain Model
GUO Shuang, ZHANG Ling
Journal of Jilin University Science Edition. 2013, 51 (05):  802-806. 
Abstract ( 190 )   PDF (1388KB) ( 297 )  

We employed the polynomial theorem to analyze the distribution of the roots of the associated characteristic equation for the linearized system at the coexisting equilibrium in a Gausetype food chain model. A group of conditions of existence of FoldHopf bifurcation were obtained at the coexisting equilibrium. The result indicates that there exists a FoldHopf bifurcation point p=p*, τ=τ0 in the model. There are complex dynamic behavior such as quasiperiodic motion and bursting behavior on the parameter plane (p,τ).

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New Homotopy Method for the P0 Linear Complementarity Problem
JIANG Xingwu, WANG Xiuyu
Journal of Jilin University Science Edition. 2013, 51 (05):  807-810. 
Abstract ( 165 )   PDF (292KB) ( 376 )  

We constructed a new homotopy method for the P0 linear complementarity problem and proved the existence, boundedness and convergence of the homotopy path for the homogeneous complementarity problem are given when the homogeneous complementarity problem has only zero solution so as to obtain a new condition of the solvability of the P0 linear complementarity problem.

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Least Squares Method for NearField Scattering Problem
LUAN Tian, WANG Yujie, ZHENG Enxi
Journal of Jilin University Science Edition. 2013, 51 (05):  811-814. 
Abstract ( 173 )   PDF (1046KB) ( 345 )  

A least squares method was used to solve the time harmonic scattering problem corresponding to total internal reflection microscopy. The trial space was constructed via plane wave functions and evanescent wave functions and the functional was defined by means of the interface jumps of the solution and its normal derivative and the discrepancy with respect to the boundary condition. Our method easily used needs fewer elements with high accuracy. Numerical
 examples presented illustrate the effectiveness of the approach.

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Existence of Shock Waves to a HyperbolicParabolicSystem Arising from Chemotaxis
ZHU Yingjie, LIANG Bo, ZHU Tianxiao, SI Yuanju
Journal of Jilin University Science Edition. 2013, 51 (05):  815-818. 
Abstract ( 150 )   PDF (311KB) ( 310 )  

We proved the existence of viscous shock waves solutions of a quasilinear hyperbolicparabolic system arising from chemotaxis by means of the phase plane analysis and Lyapunov-type function. The research result reveals that the lefthand and righthand states of a Lax shock correspond to saddle nodes.

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Singular Perturbation Problems of SecondOrder Nonlinear Equations with Locally Weak Stable Reduced Solutions
QIN Zhaona, YAO Jingsun
Journal of Jilin University Science Edition. 2013, 51 (05):  819-825. 
Abstract ( 200 )   PDF (340KB) ( 553 )  

The authors studied boundary layer phenomena for some singularly perturbed Dirichlet problems of secondorder nonlinear equations. Under the principal assumption that a reduced solution is locally weak stable, the existence of solution which exhibits boundary layer behavior was proved  via the method of bounding functions and the theory of differential inequality, with  the asymptotic estimation of solution  given.

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Stability of Amenable Operators
SHI Luoyi, WU Yujing
Journal of Jilin University Science Edition. 2013, 51 (05):  826-830. 
Abstract ( 186 )   PDF (320KB) ( 366 )  

We used the theory of approximation of Hilbert space operators in operator theory to describe the closure and interior points of generalized notions of amenable operator, and then investigated the stability of generalized notions of amenable operators.

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Representations of Density Matrix of a Multipartite Quantum System
DING Weiwei, TAO Yuanhong, LI Chang e
Journal of Jilin University Science Edition. 2013, 51 (05):  831-835. 
Abstract ( 273 )   PDF (292KB) ( 299 )  

With the help of the typical generators of special unitary group SU(3) and their properties, a Hamel basis of matrix space MR(C) was constructed, and its linear independence was proved in detail. Next, using the typical generators of special unitary group SU(R), two Hamel bases of matrix space MR1R2Rn(C) were established, under which a representation of density matrix of a multipartite quantum system was presented, thus providing a theoretical basis for studying  quantum entanglement.

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Extinction of Solutions to a Fast Diffusion Systemwith Nonlinear Sources
LIU Ling, WANG Guoming, ZHU Lixun
Journal of Jilin University Science Edition. 2013, 51 (05):  836-842. 
Abstract ( 202 )   PDF (367KB) ( 284 )  

Aiming at the extinction properties of solutions to a fast diffusion system with nonlinear sources, the authors first established the local existence of weak solutions to this problem as well as the uniqueness under certain conditions, and then gave some sufficient conditions for the solutions to vanish in finite time with the help of the theories of invariant regions for ODES, integral estimates  and Sobolev embedding theorems. The results show that the solutions may vanish in finite time when the source terms are suitably weak.

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Massera Type Criteria for Linear Differential Systems on Time Scales
ZHANG Yu, SUO Zhonglin, REN Biao
Journal of Jilin University Science Edition. 2013, 51 (05):  843-844. 
Abstract ( 233 )   PDF (244KB) ( 255 )  

We studied Massera type of criteria for linear differential systems on time scales. Using variation of constant formula, we proved the necessary and sufficient condition for the Massera type of criteria for linear differential systems on time scales yΔ=A(t)y+f(t) to possess ωperiodic solutions is the existence of a bounded solution.

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Test for Linear Regression Model Parameter andRegression Analysis for the Polyclonal Antibody Titer
PENG Cuixin, DU Bochuan
Journal of Jilin University Science Edition. 2013, 51 (05):  845-848. 
Abstract ( 133 )   PDF (308KB) ( 309 )  

The authors studied the test problem for linear regression model parameter using the empirical likelihood method. The empirical likelihood ratio statistic was established and its limiting distribution was obtained under null hypothesis. Moreover, we further used this method for the modeling study between the dilution multiple and the optical density of the colored compound (OD value).

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Existence of Standing Wave for the Discrete CoupledNonlinear Schrdinger Lattice
ZHAO Xin
Journal of Jilin University Science Edition. 2013, 51 (05):  849-851. 
Abstract ( 137 )   PDF (274KB) ( 290 )  

Under the given conditions, the existence of nontrivial standing wave for the discrete coupled nonlinear discrete Schr-dinger lattice system was proved via the Nehari’s manifold approach.

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Approximate Controllability of a Class ofParabolic Systems with Boundary Degeneracy
DU Runmei, ZHU Ying jie
Journal of Jilin University Science Edition. 2013, 51 (05):  852-854. 
Abstract ( 131 )   PDF (269KB) ( 311 )  

The author proved  the approximate controllability of a class of parabolic systems with boundary degeneracy by means of the unique continuation of the adjoint equation. Namely, under any initial conditions and desired conditions, there exists such a control function that the solution of the equation approximately reaches the desired terminal condition in a finite time.

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Totally Real Minimal Submanifolds in a Quasicomplex Projective Space CQn+p
ZHU Yan, SONG Weidong
Journal of Jilin University Science Edition. 2013, 51 (05):  855-858. 
Abstract ( 138 )   PDF (284KB) ( 337 )  

Authors studied the totally real minimal submanifolds in a quasicomplex projective space CQn+p by method of moving frames and  got an integral inequality on the square S of the length of second fundamental form and some intrinsic rigidity theorems.

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Existence of Multiplicity of Nonnegative Solutionsto Discrete Periodic Systems
ZHANG Lijuan
Journal of Jilin University Science Edition. 2013, 51 (05):  859-862. 
Abstract ( 142 )   PDF (286KB) ( 275 )  

The author  devoted to establish the multiplicity of nonnegative solutions to singular discrete perriodic systems. The existence of the solution was obtained using a nonlinear alternative of LeraySchauder and the Krasnoselskii fixed point theorem in cones. It was proved that such a problem has a nonnegative solutions under some reasonable conditions and nonlinear singular.

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A Modified Hybrid ProximalExtragradient Methodfor Maximal Monotone Inclusions
HUANG Yuanyuan, LIU Sanyang
Journal of Jilin University Science Edition. 2013, 51 (05):  863-866. 
Abstract ( 126 )   PDF (297KB) ( 245 )  

We proposed a modified hybrid approximate extragradientproximal point algorithm. At each iteration, the regularization parameter, obtained by means of Armijolike condition, is not necessarily bounded away from zero, while the method’s weak global convergence still exists. Finally, we gave two special cases of the modified framework.

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Matrix Pair with the Sum and Product Being Equaland Its Polynomial Denotation
CHEN Meixiang, LV Hongbin, FENG Xiaoxia, YANG Zhongpeng, XU Chenyu
Journal of Jilin University Science Edition. 2013, 51 (05):  867-870. 
Abstract ( 215 )   PDF (287KB) ( 276 )  

Applying the theory of Jordan canonical form, we proved the properties of Jordan canonical forms of the matrix pair with the sum and product being equal are determined mutually, obtaining the new results of polynomial denotation determined by minimal polynomial and commutative subspaces.

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A Note on the Precise Asymptotics for the First MomentConvergence of i.i.d.Random Variables
SUN Xiaoxiang, YANG Lijuan
Journal of Jilin University Science Edition. 2013, 51 (05):  871-875. 
Abstract ( 156 )   PDF (309KB) ( 311 )  
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Centroid Classifier Based on Empirical Risk for Text Categorization
ZHOU Xiaotang, OUYANG Jihong, LI Ximing
Journal of Jilin University Science Edition. 2013, 51 (05):  876-880. 
Abstract ( 208 )   PDF (537KB) ( 384 )  

Empirical risk minimization inductive principle and gradient descent method were used to fix classcentroidvectors in traditional centroidbased text classification algorithms so as to improve the poor expression ability of classcentroidvectors in traditional centroidbased text classification algorithm caused by ignoring the weighting factors of training texts. Then, an improved centroidbased text classification algorithm was obtained, the performance of which is as well as those of support vector machines. Experimental results show that the method adopted in this article is an effective mean to improve the performance of traditional centroidbased text classification algorithms.

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An Intrusion Alert Correlation Model Based on Data Mining
YU Xiaodi, Nurbol, HU Liang, XIE Nannan
Journal of Jilin University Science Edition. 2013, 51 (05):  881-886. 
Abstract ( 147 )   PDF (578KB) ( 379 )  

According to the researches of traditional network intrusion detection, we proposed a multistep intrusion alert collaborative model based on data mining, by which the alert information of several intrusion detection systems can be integrated so as to find the inner contacts by analysing the massive, disordered alert information, the attack alert can be simplified, and the multistep intrusion in the integrated alert information can be found through the constantly updated knowledge database. Comparison of the model with the existing model shows that the correlation analysis method of this model and the build of the multistep intrusion knowledge base really do help to the combination of the characteristics of different systems so as to realize multistep intrusion alert collaborative researches.

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Feature Selection Algorithm Based on ComprehensiveMeasurement for Text Categorization
YANG Jieming, LIU Yuanning, QU Zhaoyang, LIU Zhiying
Journal of Jilin University Science Edition. 2013, 51 (05):  887-893. 
Abstract ( 190 )   PDF (705KB) ( 707 )  

In view of the disadvantages of traditional feature selection algorithm, we proposed a new feature selection algorithm, which simultaneously measures the importance of one feature both in intracategory and intercategory. The proposed algorithm was compared with five feature selection algorithms via two classification algorithms on three benchmark document collections. The experimental results show the proposed method can reduce the dimensionality
 of the text representation and significantly improve the performance of the text categorization.

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Representation for Topological Relations between a SimpleRegion with a Hole and Two Simple Regions
LI Jian, LIAO Menglan, WEN Chang ji
Journal of Jilin University Science Edition. 2013, 51 (05):  894-898. 
Abstract ( 206 )   PDF (3669KB) ( 293 )  

The 4-ntersection matrix was extended to 12-ntersection matrix based on RCC5 to represent the spatial relations between a simple region with a hole and two simple regions. The algorithm was given to calculate the topological relation between a simple region with a hole and two simple regions, 161 topological relations were obtained, and the schematic diagrams were also given. We checked up that all these 161 topological relations are possible. We p
roved that these topological relations are exclusive and complete, and we gave the conceptual neighborhood graph of 161 topological relations.

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Formalizing the Modeling Process of Physical World inIntelligent Environments
WANG Nan, SUN Shanwu, CHEN Jian
Journal of Jilin University Science Edition. 2013, 51 (05):  899-903. 
Abstract ( 160 )   PDF (523KB) ( 272 )  

According to the attributes and behavior character of the entities composing the intelligent physical world brought by pervasive computing, the perception level of the KRA (knowledge reconfiguration and abstraction) model proposed by Saitta and Zucker to represent the static physical world was divided into primary perception and perception reconstruction. This can represent and distinguish the proposed entities of various domains to capture the hierarchical model of the physical world in intelligent environment. The presented extended model defines physical entities unitedly and represents networked entities logically to avoid reduplicate perception. The relationships between networked entities and between virtual entity and networked entity are logically defined to help the hierarchy of the model. In addition, the reasoning procedure based on the whole represented world can be decomposed into less\|scale ones based on the
 space constructed by physical entities and their relationships and by virtual entities and their relationships, so that the complexity of reasoning is greatly
reduced.

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Improved Snake Model in the Depression Boundary Detection
YAN Yang1,2, LI Yan bo3, WANG Yunji2, HUANG Wenbo1,2
Journal of Jilin University Science Edition. 2013, 51 (05):  904-907. 
Abstract ( 188 )   PDF (1825KB) ( 345 )  

We introduced a weight which can automatically control the external force of the Snake model is proportional to the size of the image gradient. Then we used Laplace operator to extend the gradient information to further area, thus expanding the search range of the Snake evolution curve so as to make the evolution curve get into the depressed area under the weighted external force. In OpenCV, the experiments show that improved Snake model can converge to the depression boundary of the target, by which convergence speed is increased. Thus our model solves the difficulty to capture depression border compared with the original Snake model.

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Multi-voyages Combat Performance System
HAN Lu, WANG Qi
Journal of Jilin University Science Edition. 2013, 51 (05):  908-911. 
Abstract ( 294 )   PDF (562KB) ( 368 )  

Based on modern military combat exercise needs, we proposed a multi\|route deduction algorithm, and established a multi\|route inference model to solve the synchronization, the encounter between batches, and some relative problems of special fields during the voyaging process at different routes. Simulation results show that the deduction model established by using the algorithm can be used to simulate the two sides of combat situation under different circumstances, to predict the outcome of the war, and make  operational plans in auxiliary.

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Photon Diode of New Linear Function Photonic Crystals
ZHANG Siqi, WU Xiangyao, LIU Xiaojing, BA Nuo, WANG Jing, LI Hong,MA Ji, DONG He, CHEN Wan jin, YIN Xinguo, GUO Yiqing
Journal of Jilin University Science Edition. 2013, 51 (05):  912-918. 
Abstract ( 147 )   PDF (668KB) ( 380 )  

We researched the transmissivity of the function photonic crystals, and the distribution of electric field of function PCs with the light positive or negative incident. The results show that the linear function photonic crystals can magnify or attenuate the distribution of electric field.

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Eliminating Degenerate State of Rb Atom by Yangian Algebra
ZHANG Zhiying, GOU Lidan, BAI Duanyuan, ZHOU Chengcheng, XIAO Hongliang
Journal of Jilin University Science Edition. 2013, 51 (05):  919-925. 
Abstract ( 137 )   PDF (336KB) ( 367 )  

Analysis of Zeeman effect in condensed vapor of 87Rb obtained the degenerate states of the Hamiltonian H=K·S+x(K+1/2)Sz with s=1 and x=±1. The new operator constructed of Yangian algebra (Ysl(2)), which can distinguish degenerate states,  is applied to multiple degenerate system to realize the transition between different quantum states so as to eliminate degenerate states.

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Compton Plateau in  γRay Spectrum of NaI(Tl) Scintillation Detector
ZHANG Weitian, YANG Dong, WANG Zhichang, ZONG Zizhao, WANG Ying,LU Jingbin, MA Yugang, LI Jian, HAN Wei, DU Xiaobo, WANG Wenquan
Journal of Jilin University Science Edition. 2013, 51 (05):  926-928. 
Abstract ( 351 )   PDF (571KB) ( 357 )  

Compton plateau in the  137Cs γray spectrum measured by a NaI(Tl) detector was studied via the KleinNishina formula of Compton scattering differential cross section, which is deduced from the Dirac formula of quantum mechanics, and   the MCNP simulation program also. There is distinct difference between the theoretical calculation and the experimental result, which is found to come from both the photon secondary effect in the scintillation crystal and the spectrum widening. By correction of these two effects, the MCNP simulation result is in  very good agreement with the experimental data.

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Design of Planar Spiral Coil Applied to the MagneticCoupling Resonance System
LI Wenxian, TIAN Xiaojian, YOU Yuan
Journal of Jilin University Science Edition. 2013, 51 (05):  929-932. 
Abstract ( 385 )   PDF (984KB) ( 1386 )  

We used electromagnetic simulation software FEKO which  is based on the method of moments (MOM) to establish 3D modeling planar spiral coil and obtained the resonant frequency of the planar spiral coil by calculating 50 cm nearfield values. This method omitted the traditional complex mathematical calculations on planar spiral coil selfinductance. We manufactured the planar coil according to the simulation size, and tested the S11 parameter. The comparison of experimental and simulation results proved the accuracy of the simulation. This approach greatly simplified the design of the planar spiral coil. Finally, we used a coil the resonant frequency of which is 19.3 MHz to light up a led array that proved the feasibility of the design for wireless energy transmission system.

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Preparation of SrFeO3-δ Micro-nanofibers andIts Magnetic Properties
LENG Jing, LIU Runru, WANG Dejun, LI Shuang, WANG Lili
Journal of Jilin University Science Edition. 2013, 51 (05):  933-936. 
Abstract ( 155 )   PDF (4417KB) ( 369 )  

Dihydrogen bonds PVP/SFO composite fibers were synthesized via solgel process combined with electrospinning technology. After high
temperature calcination, perovokite structure SrFeO3-δ nanofibers were successfully prepared. The samples of micronanofibers were investigated on
a scanning electro microscope (SEM), a transmission electron microscope(TEM), an Xray diffractometer (XRD) and a superconducting quantum interference device (SQUID), respectively. The results show that the PVP/SFO composite nanofibers had smooth surfaces and the average diameter was about 500 nm. The orthogonal perovokite structure SrFeO3-δ micronanofibers were obtained by calcining at 800 ℃ for 2 h in air, with the diameter ranged from 260—480 nm and an average fiber diameter of about 400 nm and an average grain size of 32 nm. Magnetic property measurements suggest that the Neel temperature and the Curie temperature of the fiber samples were higher than those of the bulk materials.

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FirstPrinciples Calculations of Elastic and Optical Properties of LnN
YANG Xiaocui, ZHAO Yanhui, LIU Fang, LUO Xiangyi, XIAO Junping
Journal of Jilin University Science Edition. 2013, 51 (05):  937-940. 
Abstract ( 199 )   PDF (332KB) ( 330 )  

The elastic, optical properties and Debye temperature of LnN were investigated by means of firstprinciples calculations based on density functional theory. The calculated elastic constants show that the B/G ratio of light LnN (Ln=La,Ce,Pr,Nd,Pm,Sm,Eu) is larger than 175 except LaN, indicating that th
ese crystals are ductile, while the ratio of heavy LnN (Ln=Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu) is smaller than 1.[KG-*3]75 except GdN, indicating that these crystals are brittle. The optical property shows that the static dielectric constant and reflection coefficient of HoN are the highest among those of all the LnN compounds, and shows that refractive index of LaN is the highest among those of all the LnN compounds. The Debye temperature of LnN is between 300—500 K, indicating that the order of magnitude of the phonon vibration is 1013 s-1.

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Raman Spectra of Ultratrace Amount of Molecules in NanoAg Sols
TIAN Yanjie, OUYANG Shunli, HAN Guoxia, LI Dailin, ZHU Huafeng
Journal of Jilin University Science Edition. 2013, 51 (05):  941-943. 
Abstract ( 160 )   PDF (1590KB) ( 446 )  

Ag colloidal particles in a size range of about 80—90 nm were prepared by silver nitrate solution reduced with sodium citrate.  We collected the surfaceenhanced Raman spectra of 10-13 mol/L aqueous R6G via 1 mW of laser power and 5 s of integration time. 10-11 mol/L aqueous R6G was detected by airdried Agfilm method. When the density of Ag colloidal particles decreased, then the ability of surfaceenhanced Raman scattering decreased rapidly.

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Preparation, Characterization and Photocatalytic Activity ofKeggin Type of Phosphotungstic Acid Salts
CAO Junxia, LIU Chunli, LIAO Liling
Journal of Jilin University Science Edition. 2013, 51 (05):  944-948. 
Abstract ( 296 )   PDF (4945KB) ( 478 )  

Six phosphotungstic acid salts of Keggin type such as Mg1.5PW12O40,Ba1.5PW12O40,Ca1.5PW12O40,Na3PW12O40,K3PW12O40and (NH4)3PW12O40 were prepared by means of liquid phase method and the surface morphologies and microstructures of the samples were characterized by Xray diffraction (XRD) and transmission electron microscopy (TEM). The photocatalytic activities of the catalysts were investigated by photocatalytic degradation of methyl orange with  250 W high pressure mercury lamp as ultraviolet light source. The results show that the six salt particles keep basic Keggin structure frame, belonging to the Keggin structure heteropoly acid type catalyst. The catalysts that have the better activities for the degradation of methyl orange are Mg1.5PW12O40,Ba1.5PW12O40and Ca1.5PW12O40, among which Mg1.5PW12O40 is the best.

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Synthesis and Properties of PolyetherBased Superplasticizer
WANG Yan, REN Dianfu, TIAN Weixing, WANG Hong,CHEN Zhong, HAN Zhaorang
Journal of Jilin University Science Edition. 2013, 51 (05):  949-954. 
Abstract ( 205 )   PDF (574KB) ( 562 )  

HPEG/AMPS/MA/AA polyetherbased superplasticizer was synthesized with free radical copolymerization method. Monomer ratio and the synthesis process were discussed. Its structure, molecular weight and distribution were tested by FTIR, 1H NMR and GPC; the effects of the superplasticizer dosage and
 temperature on cement paste fluidity and waterreducing ratio were investigated; and the adaptability of the superplasticizer in different cement application was investigated. This kind of superplasticizer has high dispersion, the initial fluidity of cement paste and that of it left for 1 h could reach 310 and 300 mm respectively, and the waterreducing ratio could reach 35%. The superplasticizer shows excellent properties in compatibility with reference cement, Dinglu cement and Shanlü cement.

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Preparation of Nanocrystalline PbO2/TiO2 Catalysis Electrodeand ElectroCatalysis Behavior of Adipaldehyde Oxidation
ZHU Chuangao, WANG Fengwu, XU Mai, FANG Wenyan
Journal of Jilin University Science Edition. 2013, 51 (05):  955-960. 
Abstract ( 288 )   PDF (1342KB) ( 343 )  

Precursor PbTi2(OCH2CH2OH)12-x was synthesized by electrolysis of titanium and lead in glycol solution. Nano\|crystalline PbO2/TiO2 powder was prepared by direct solgel method from the precursor and then calcined for 2 h at 450 ℃. The metal alkoxide was characterized by FTIR and Raman spectra. The monodisperse structure and the diameter of nanoPbO2/TiO2 were observed by XRD and SEM. The results show that PbO2/TiO2 of 100—150 nm was obtained. The highly active nanoPbO2/TiO2 electrode was prepared via electrosynthesis and solgel method. The cyclic voltammetry was used to study the redox behavior of the nanoPbO2/TiO2 electrode in HCl+ OHC(CH2)4CHO solution. The current density of the electrode increased obviously and reached to 157 mA/cm2. The electrode potential difference of the redox peaks decreased obviously. The PbO2/TiO2 electrode had the high electrocatalytic activities for the oxidation of OHC(CH2)4CHO, and the average current efficiency and yield were 89.2% and 97.4% respectively.

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Substrate Specificity of 6A,6A′-Dianilino-6B,6B′-diselenide-bis-β-cyclodextrin
LV Shaowu, LV Bingcong, ZONG Hui, TAO Jin, WANG Hongling
Journal of Jilin University Science Edition. 2013, 51 (05):  961-964. 
Abstract ( 178 )   PDF (446KB) ( 258 )  

The gluathione peroxidase (GPx) activities of 6A,6A′-dianilino-6B,6B′-diselenide-bis-β-cyclodextrin (6-AnSeCD) in the reduction of H2O2, tertbutylhydroperoxide (t-BuOOH) and cumenyl hydroperoxide (CumOOH) by glutathione (GSH) were assessed in classical coupled reductase assay, and the steadystate kinetics of 6AnSeCD in the reduction of three hydrogen peroxides was studied. The 6-AnSeCD displayed best GPx activity for the reduction of CumOOH by GSH. A pingpong mechanism was observed in the steadystate kinetic studies on the 6-AnSeCDcatalyzed reactions. We further compared kmax, Km and secondorder rate constant of 6-AnSeCD. The results show the CumOOH is the most preferred substrate for 6-AnSeCD.

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Method Improvement of Synthyesis and Purification of3,4,5,6-Tetrabromophenolsulfonephthalein
XIU Zhiming, HUANG Mengyuan, HU Bing, LEI Li\|yan, WANG Liping
Journal of Jilin University Science Edition. 2013, 51 (05):  965-968. 
Abstract ( 289 )   PDF (620KB) ( 386 )  

3,4,5,6-Tetrabromophenolsulfonephthalein was synthesized by the reaction of 2-sulfobenzoic acid cyclic anhydride suffered from bromination with phenol. The crude product was purified by solvent extraction and recrystallization with a purity of the product of 97.45% and a yield of 36.5%, respectively.

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Determination of Metabolites of Anthraquinone in Rat Plasma and Urine by LC-MS
KANG Wei, SHEN Yongmei, DENG Qiaohong, YU Huipan, LIN Qinghua, ZHANG Honggui
Journal of Jilin University Science Edition. 2013, 51 (05):  969-972. 
Abstract ( 195 )   PDF (460KB) ( 262 )  

To establish a method to identify the metabolites of anthraquinones in the plasma and urine of rats  administrated Polygonum cuspidatum extract
 by liquid chromatographymass spectrometry (LC-MS). The assay was conducted on an Agilent XDBC18 (4.6 mm×250 mm, 5 μm), the mobile phase was watermethanol gradient elution, the column temperature was 25 ℃, the ion source was ESI in negative mode and capillary voltage was 3.5 kV. Three metabolites, emodin, chrysophanol and physcion were determined in rat plasma. Four metabolites emodin, emodin glucuronic acid ester, Aloeemodin sulfate and aloeemodin glucuronic acid ester were determined in rat urine.

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Development and Preliminary Application of RealTime  PCR Assayfor Detection and Quantization of Feline Calicivirus
JIANG Xue1, GAO Yuwei2, HU Guixue1, YANG Songtao2, ZHAO Yanli1,LIU Qiuyan1, XU Chunzhong, LIANG Xiujuan, XIA Xianzhu
Journal of Jilin University Science Edition. 2013, 51 (05):  973-977. 
Abstract ( 235 )   PDF (1322KB) ( 474 )  

To detect feline calicivirus (FCV), a realtime quantitative PCR (qPCR) assay was established by using a pair of primers and TaqMan probe designed and synthesized according to the conserved capsid protein gene ORF2 sequence of FCV in the GenBank. The reaction system and conditions of the qPCR assay were optimized and the standard curve was established. Further, the specificity, sensitivity and repeatability test were also assessed. The established quantitative PCR assay was applied to detecting clinical samples infected by FCV. The results show that the correlation rate of the standard curve for the qPCR was 0.992. The detected quantity was from 2.26×101 to 2.26×1011 copies/μL of FCV cDNA. With the qPCR method, a reliable diagnostic result was obtained for detecting FCV samples. But detection of other feline pathogenic agents was negative. In addition, reproducible assay showed a good performance of repeatability and the variation coefficient of intragroup was 2.158%.

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