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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 March 2015, Volume 53 Issue 02
Existence and Uniqueness of Positive Solutions for a Class of Singular Nonlinear Systems of Fractional Differential Equations
LI Xuemei, DAI Qun, LI Huilai
Journal of Jilin University Science Edition. 2015, 53 (02):  157-160. 
Abstract ( 230 )   PDF (277KB) ( 401 )  

On the basis of a coupled fixed point theorem on ordered metric spaces, we studied the existence and uniqueness of a positive solution for a kind of singular nonlinear fractional differential system of equations boundary value problem and obtained 2 theorems the existence and uniqueness  of solutions of such equations.

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Existence of Nontrivial Solutions of a Class ofp-Kirchhoff Type Equations
WANG Tian’e, LI Jian, LI Junjie, XIAO Cong
Journal of Jilin University Science Edition. 2015, 53 (02):  161-165. 
Abstract ( 183 )   PDF (289KB) ( 325 )  

Aiming at the existence of nontrivial solutions of  a class of p-Kirchhoff type equations, applying the variational method, we obtained the existence of nontrivial weak solutions of the p-Kirchhoff type equation under the condition of nonlinearity being superlinear and subcritical.

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Existence and Uniqueness for the Solution of Ordinary-Differential Equations with Initial Values
LUO Huanhuan, FAN Shengjun
Journal of Jilin University Science Edition. 2015, 53 (02):  166-172. 
Abstract ( 694 )   PDF (341KB) ( 485 )  

By virtue of the convolution approximation, Bihari’s inequality and other tools, we put forward and proved that the solution of the following ordinary differential equation exists and is unique under the conditions that the function f(t,y) satisfies a continuity condition, a weak monotonicity condition and a general growth condition in y, and the f(t,0) is absolutely integrable on [0,T] with T<+∞ or T=+∞.

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Complete Classification of the Finite Groups ofOrder p3q3 with Every Sylow Subgroup Being Elementary
CHEN Songliang
Journal of Jilin University Science Edition. 2015, 53 (02):  173-176. 
Abstract ( 218 )   PDF (307KB) ( 308 )  

Letting p,q be odd primes with p>q. The author made a complete classification of finite groups of order p3q3 whose every Sylow subgroup is elementary.With the help of local analysis of finite groups and obtained the corresponding structures completely described.

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A New Hilbert’s Type Integral Inequality with a Quasihomogeneous Kernel
HONG Yong
Journal of Jilin University Science Edition. 2015, 53 (02):  177-182. 
Abstract ( 202 )   PDF (301KB) ( 240 )  

Supposing that t>0, λ1λ2≠0, if function K(x,y) satisfies: K(tx,y)=tλ1K(x,t-λ1/λ2y),K(x,ty)=tλ2K(t-λ2/λ1x,y),then K(x,y) is called quasi-homogeneous funtion of order (λ12). In this paper, a new Hilbert’s type integral inequality with a quasihomogeneous kernel of λ1λ2<0 was studied by the  weight function, with its  best constant factor  discussed.

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Multiplier Method for Solving Optimization Problemswith Many Complicated Constraints
JIANG Xiaowei, YANG Yueting, LU Yunlong, ZHAO Xue
Journal of Jilin University Science Edition. 2015, 53 (02):  183-188. 
Abstract ( 222 )   PDF (342KB) ( 258 )  

A multiplier method based on activeset strategy was presented for solving optimization problems with many complicated constraints. We got a converted unconstrained problems, in which the maxvalue function could be approximated by the aggregate function. In each iteration procedure, only a small part of functions were usually involved, so the computation for gradient was significantly reduced. The numerical results show that the method is effective.

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Active-Set Algorithm for Solving the Minimum Volume Enclosing Ellipsoid Problem
CONG Weijie
Journal of Jilin University Science Edition. 2015, 53 (02):  189-193. 
Abstract ( 263 )   PDF (398KB) ( 360 )  

Firstly, the linear convergence of the rank2 algorithm for the minimum volume enclosing ellipsoid (MVEE) problem was established. Secondly, a simple activeset strategy was presented to compute the N furthest points from the current ellipsoid at each iteration. By incorporating this strategy into the rank-2 algorithm, an activeset algorithm for the MVEE problem was obtained. The numerical results show the proposed activeset algorithm can effectively solve largescale date problem with a high degree of accuracy.

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Existence of Solution for Nonlinear FractionalDifferential Equation with Boundary Value Conditions
LIU Suli, LI Yanchu, LI Huilai
Journal of Jilin University Science Edition. 2015, 53 (02):  194-198. 
Abstract ( 242 )   PDF (286KB) ( 265 )  

We considered the nonlinear fractional differential equationcDα0+u(t)=f(t,u(t),u′(t)),a.e. t∈(0,1),u(0)=u′(1)=u″(0)=0,where cDα0+ is the Caputo fractional order derivative, 2<α≤3 is a real number. We proved the existence of at least one solution of the boundary value problem using LeraySchauder continuation principle.

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Properties of Some Operators in Soft d-Algebras
GUO Jiansheng
Journal of Jilin University Science Edition. 2015, 53 (02):  199-205. 
Abstract ( 212 )   PDF (367KB) ( 251 )  

We applied the soft idea to d-algebras to investigate some important operations such as restricted intersection, restricted union, extended intersection, extended union, “AND”, and subset operations of soft d-algebras and the idealistic soft d-algebras, and gave some important properties of them. First of all, we proved that the restriction (F|B,B) of (F,A) on its subset B is a soft d-algebra over X; the restricted intersection (F,A)∩R(G,B)and extended union (F,A)(G,B) of two soft dalgebras (F,A) and (G,B) are soft d-algebras over X; the “AND” (F,A)∧(G,A) of two soft d-algebras (F,A) and (G,B) is a soft d-algebra over X. Second, we proved that the homomorphism image (f(F),A) of soft dalgebra (F,A) is a sft dalgebra over X. Finally, we proved that the extended intersection(F,A)∩E(G,B) of two didealistic (r
esp. d#-idealistic and d*-idealistic) soft d-algebras (F,A) and (G,B) over X is a d-idealistic (resp. d#-idealistic and d*-idealistic) soft d-algebra over X.

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Symmetric Solution and Antisymmetric Solution for a Class of Matrix Equations AX=B,XD=E
GUO Lijie, ZHOU Shuo
Journal of Jilin University Science Edition. 2015, 53 (02):  206-212. 
Abstract ( 215 )   PDF (326KB) ( 251 )  

The symmetric solution and the antisymmetric solution of matrix equations AX=B, XD=E were considered. Based on the special properties of symmetric
 (anti-symmetric) matrices and the canonical correlation decomposition (CCD) of a pair of matrices, the necessary and sufficient conditions for the solvability
and the general expression of the symmetric solution (antisymmetric solution) were obtained. Moreover, the related optimal approximation problem to a given matrix over the solution set was solved.

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Holder Continuity of Lyapunov Exponent for AnalyticQuasi-periodic Jacobi Operators with Weak Liouville Frequency
GAO Min
Journal of Jilin University Science Edition. 2015, 53 (02):  213-223. 
Abstract ( 245 )   PDF (404KB) ( 240 )  

We studied the Hlder continuity of the Lyapunov exponent associated with 1D quasiperiodic Jacobi operators(Hx,ω)(n)=-b(x+(n+1)ω)(n+1)-b(x+nω)(n-1)+a(x+nω)(n),n∈Zwhere x∈T, a(x),b(x) are real analytic on T and b(x) is not identically zero. Using the control theory of the Fourier coefficient of subharmonic function and the number property of ω, we obtained the large deviation theorem through more detailed analysis and the Hlder continuity of the Lyapunov exponent for the operators with weak Liouville frequency by further using the avalanche principle.

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Locally Uniform Rotundity in Orlicz Sequence SpacesEndowed with the Generalized Orlicz Norm
CHENG Yahuan, DUAN Lifen, ZUO Mingxia
Journal of Jilin University Science Edition. 2015, 53 (02):  224-228. 
Abstract ( 188 )   PDF (293KB) ( 243 )  

Using special techniques that are related to sequence in sequence Banach spaces, the authors studied locally uniform rotundity and weakly locally uniform rotundity of the Orlicz sequence spaces, presenting sufficient and necessary conditions for the Orlicz sequence spaces endowed with the generalized Orlicz norm to make them be locally uniform rotund and weakly locally uniform rotund.

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SuperLi Spectrum Problems and Its Selfconsistent Source
HU Beibei, ZHANG Ling, FANG Fang
Journal of Jilin University Science Edition. 2015, 53 (02):  229-234. 
Abstract ( 188 )   PDF (318KB) ( 350 )  

The super Li hierarchy and its super Hamiltonian structure were established based on a loop super Lie algebra and trace identity. Then the super Li system with selfconsistent sources was constructed.  Furthermore, conservation laws for the super Li system were given with the help of two introduced variables.

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Stationarity Test for Poisson Autoregressive Model
ZHAO Zhiwen, BI Li, ZHANG Meili
Journal of Jilin University Science Edition. 2015, 53 (02):  235-240. 
Abstract ( 263 )   PDF (329KB) ( 458 )  

We studied the stationarity test problem for Poisson autoregressive model using the empirical likelihood method. The empirical likelihood ratio statistic was established and its limiting distribution was obtained under null hypothesis. The finite sample property was also examined through Monte Carlo simulations. 

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Smoothing Estimation in Accelerated FailureTime Model for Clustered Data
CHEN Wei, TIAN Yuan, REN Fengling, WANG Dehui
Journal of Jilin University Science Edition. 2015, 53 (02):  241-244. 
Abstract ( 261 )   PDF (312KB) ( 229 )  

The authors proposed a smoothing estimation for regression parameters in the accelerated failure time model for clustered data. Under certain conditions, the proposed estimator is consistent and asymptotically normal. We designed a resampling method to estimate the asymptotic covariance matrix.

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Armendariz Rings Relative to Subrings
GUO Ying
Journal of Jilin University Science Edition. 2015, 53 (02):  245-247. 
Abstract ( 167 )   PDF (248KB) ( 279 )  

We introduced Armendariz rings relative to a subring  and studied such minimum subring ρ and discussed the relative Armendariz properties of polynomial rings. Furthermore, it is shown that  ρ is an ideal in a ring R and if ρ is a semiprime Armendariz ring, then R is an Armendariz ring.

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A Class of SetValued Maps of p-Adic System
WANG Wei, LIAO Menglan, ZHU Xiaogang, LI Junjie, ZHAO Hui
Journal of Jilin University Science Edition. 2015, 53 (02):  248-250. 
Abstract ( 206 )   PDF (288KB) ( 256 )  

Some dynamical properties of p-adic system and the setvalued maps induced by p-adic maps were considered. With the help of the relation of the base system and its hyperspace system, a class of setvalued maps of p-adic system was proved to be continuous and isometric. Furthermore, it was proved that the setvalued maps have 0 topological entropy and are not Li-Yorke chaotic.

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Existence Condition of a Solution of the Mixed Linear Complementarity Problem
YANG Taishan, WANG Xiuyu, JIANG Boyang
Journal of Jilin University Science Edition. 2015, 53 (02):  251-254. 
Abstract ( 229 )   PDF (301KB) ( 268 )  

The mixed linear complementarity problem was considered by the homotopy method, a new homotopy equation was constructed, and the existence, boundedness and convergence of the homotopy path were proved, with a sufficient condition of the solution of mixed linear complementarity problem obtained.

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Polar Factorization and Generalized Inverse forRow (Column) Symmetric Matrix
YUAN Huiping
Journal of Jilin University Science Edition. 2015, 53 (02):  255-260. 
Abstract ( 282 )   PDF (317KB) ( 294 )  

The author studied the polar factorization and generalized inverse of row (column) symmetric matrix. In addition, the formulae of the polar factorization and generalized inverse of row (column) symmetric matrix were given, which make calculation easier. And some perturbation bounds of the polar factorization of row (column) symmetric matrix were also presented.

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Inverse Problem for the Interior Spectral Dataof the Discontinuous Dirac Operator
ZHOU Lu, WEI Guangsheng
Journal of Jilin University Science Edition. 2015, 53 (02):  261-263. 
Abstract ( 258 )   PDF (269KB) ( 225 )  

An inverse problem for Dirac operator with discontinuities in [0,π] was studied, of which the potential function can be uniquely determined by a set of values of eigenvectors at some internal point and one spectrum(i.e. interior spectral data).

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Copure Projective Dimensions under Cleft Extension
CHEN Xiuli, CHEN Jianlong
Journal of Jilin University Science Edition. 2015, 53 (02):  264-266. 
Abstract ( 304 )   PDF (256KB) ( 426 )  

Let H be a finite dimensional Hopf algebra and A be an algebra over a fixed field k, using the relations between cleft extension and crossed product, we proved that the left copure projective dimension is invariant under cleft extensions when H is semisimple. At the same time, QF properties about A and B was investigated based on the assumption that AB is Hcleft.

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A Method of GPUBased Accelerating 2DMulti-resolutions Discrete Wavelet Transform
LIU Lei, ZHANG Zijia, LIU Lei, ZHANG Rui
Journal of Jilin University Science Edition. 2015, 53 (02):  267-272. 
Abstract ( 245 )   PDF (547KB) ( 295 )  

Since the classical wavelet transform algorithm on CPU hardly meets the realtime performance requirements, especially dealing with large scale data in high resolution, we presented a GPUbased parallel wavelet transform algorithm, which improves the locality of local memory access and increases the bandwidth of global memory access. It uses multikernel to improve the performance in the case of multiresolutions. The experiment results show that compared to the performance of a classical algorithm on CPU, GPU gains the speedup of 30—60, accordingly, it can satisfy the realtime requirements for transformation.

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Online MapReduce Data Transmission MechanismSupporting LargeScale Stream Data Processing
WEI Xiaohui, LI Cong, LI Hongliang, LI Xiang, LIU Yuanyuan, LI Lina, ZHUANG Yuan
Journal of Jilin University Science Edition. 2015, 53 (02):  273-279. 
Abstract ( 260 )   PDF (1017KB) ( 340 )  

We proposed a scalable and dynamic MapReduce computation model which supports the online processing of largescale dynamic/static data against the characteristics of uneven stream data size and dynamic flowing  and breaking out suddenly. On this basis, we proposed an online MapReduce data transmission mechanism and implemented its prototype program based on the push mode of Event and the use of Netty asynchronous communication technology. This paper focuses on solving fast online transfer of the largescale distributed computing program and data dynamic distribution to provide support for dynamic MapReduce model. The experimental results show that the method can greatly improve the transmission efficiency of data between jobs compared with the traditional socket pipeline method in Hadoop system and improve realtime data stream handling significantly.

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Modeling Method  on Environmental Information in CPS
YU Yang, JIN Ying, ZHANG Jing
Journal of Jilin University Science Edition. 2015, 53 (02):  280-284. 
Abstract ( 228 )   PDF (574KB) ( 282 )  

Based on meta object facility (MOF) and modeling technology, an environmental information modeling method was proposed in cyber physical systems. The method uses the hierarchical modeling ideas and the domain modeling way to define the metametamodel of environmental information and the meta
model of environmental information in different domains so as to realize the uniform of environmental metainformation and the diversity in different domains. This method is helpful to solving the problem of environmental information description’s inconsistency brought by multidimensional heterogeneity, and the problem of difficulties in information fusion and interaction.

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Optimizing the Dynamic Backtracking Based on MAC
XU Cangzhu, HAO Shuang, LI Boyu, LIU Minghui
Journal of Jilin University Science Edition. 2015, 53 (02):  285-290. 
Abstract ( 303 )   PDF (355KB) ( 297 )  

On coping with constraint satisfaction problems by means of classical dynamic backtracking based on MAC, it costs much space to store eliminating explanation, and the backtracking mechanism is too complex. Thus we optimized the classic eliminating explanation and the backtracking mechanism of the dynamic backtracking algorithm. The optimized dynamic backtracking algorithm compresses the space of recording eliminating explanation, and returns to
 the key variable that may lead to confliction via only one backtrack operation. In the worst case, the space complexity of storing eliminating explanation declines from O(n2d) to O(nd+n2). The optimized dynamic backtracking algorithm combines with restart technology for further improvement to become a complete algorithm. Experimental results show that the efficiency of the complete optimized dynamic backtracking algorithm is prior to that of standard backtracking in solving most problems.

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Fast Collision Detection Algorithm of Cylinders Based on Generatrices
CHENG Shijun, FENG Yueping
Journal of Jilin University Science Edition. 2015, 53 (02):  291-296. 
Abstract ( 491 )   PDF (715KB) ( 512 )  

We proposed cylinder bounding boxes and their corresponding collision detection algorithm so as to solve the problem of loose contact of traditional flatsurfaced bounding boxes. Firstly, the algorithm tests the top and bottomend round plates for collision. Secondly, the relative angle between the two cylinders is calcuated. Finally, the generatrices nearest to each other are found and used to perform  collision detection. Test runs have proved our method is much faster than traditional flatsurfaced bounding boxes collision detection methods when used to examine the same columnar volumes.

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Grid Task Scheduling Optimization Based onAdaptive Genetic Algorithm
XIAO Hairong, LI Huixian
Journal of Jilin University Science Edition. 2015, 53 (02):  297-301. 
Abstract ( 235 )   PDF (777KB) ( 427 )  

In consideration of low efficiency, resource load imbalance of the traditional task scheduling algorithm and other shortcomings, and the heterogeneous and dynamic characteristics of a modern grid system, an effective adaptive update method for the crossover and mutation probability was proposed based on the genetic algorithms, which improves the global search ability and convergence speed of the genetic algorithm. Simulation results show that improved genetic algorithm enhances the speed of evolution significantly, can better handle grid task scheduling, improve task scheduling efficiency and reduce resource load imbalance with high practicality.

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Wireless Smart Home Gateway SystemBased on ZigBee and Internet
WANG Yiqi, HE Lili, HU Chengquan, GAO Yan, ZHU Zhangwei
Journal of Jilin University Science Edition. 2015, 53 (02):  302-306. 
Abstract ( 250 )   PDF (837KB) ( 382 )  

The authors designed and implemented a ZigBeeInternet wireless smart home gateway system which chooses LM3S9B96 and CC2520 as the core chips and uses TCP/IP protocol stack LwIP and ZigBee protocol stack on the basis of the embedded realtime operating system FreeRTOS. The system solves the problem of data transmission between ZigBee and remote Internet smart home service platform. Experiment results show that the gateway has a good stability and reliability to meet the demand for new smart home control center system.

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Method of Recognizing Unknown Words by Building SingleWord Dictionary
YU Tong, LIU Shufen
Journal of Jilin University Science Edition. 2015, 53 (02):  307-310. 
Abstract ( 268 )   PDF (419KB) ( 189 )  

Chinese word segmentation is a very important task in information processing. The present Chinese word segmentation technology mainly relies on commonword dictionary. But the dictionary has no recognition capability for unknown words. The authors brought forth a method of using doubledictionary to recognize unknown words. The process is to build a commonword dictionary and a singleword dictionary, then combine  them for  segmentation, solving the inefficiency in recognizing unknown words. As a result, the accuracy rate can reach above 90%.

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Controlling Chaos of ThreeWave Coupling System in Plasma
ZHANG Zhiying, FENG Xiuqin, YAO Zhihai, NIU Lijun, TIAN Zuolin
Journal of Jilin University Science Edition. 2015, 53 (02):  311-315. 
Abstract ( 223 )   PDF (1856KB) ( 271 )  

With the aid of the nonlinear characteristics of threewave coupling in plasma, we analyzed the chaotic characteristics of threewave coupling system in plasma and put forward the method of perturbation control. The perturbation method can control the coupling system to the different period through times cycle to the bifurcation. [JP2]With the increase of perturbation amplitude, the system can be controlled to cycles 8,4,2 and 1. Then we realized chaotic control of threewave coupling system in plasma.

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14 MeV Neutron Shielding Material Designed by MCNP Code
LAN Min, ZHANG Jingjie, CHENG Daowen
Journal of Jilin University Science Edition. 2015, 53 (02):  316-319. 
Abstract ( 355 )   PDF (352KB) ( 347 )  

If hydrogenrich material is used to shield the 14 MeV neutrons produced by D-T neutron generator whose neutron yield is 108 n/s, its thickness must be more than 76 cm to make the neutron radiation dose less than 0.025 mSv/h. In order to decrease the thickness, the bilayer material consisted of copper and boronpolyethylene was used as 14 MeV neutron shielding material. The result of the calculation shows that the minimum thickness of the bilayer
 material is 52 cm, in which the thicknesses of copper and boronpolyethylene are 37 cm and 15 cm and the content of boron is 1.00%.

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Analysis for Cavitation Problem of HeatedViscoelastic Plastic Composite Ball
CHEN Yajuan, SHANG Xinchun
Journal of Jilin University Science Edition. 2015, 53 (02):  320-326. 
Abstract ( 175 )   PDF (844KB) ( 251 )  

The nonlinear mathematical model of describing cavity movement in a composite sphere was established via employing KelvinVoigt differential type constitution equations of thermoviscoelasticity with the aid of the dynamical theory of finite deformation. Variation curves of the geometric and material parameter vs the critical temperature were obtained, dynamical variation curves of cavity radius increasing with time were given, and variation rules of cavity radius dynamical increasing with the external temperature, the geometric dimensions, and the material parameters were also discussed.

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Preparation and Growth Mechanism of GalliumOxyhydroxide Hyperbranched Nanoarchitectures
WU Si, ZHANG Jian, CUI Qiliang
Journal of Jilin University Science Edition. 2015, 53 (02):  327-330. 
Abstract ( 229 )   PDF (10988KB) ( 250 )  

Hyperbranched α-GaOOH nanocrystals with a sheaflike morphology have been prepared via the alcoholysis process with GaCl3 and methanol as the reactants in the presence of benzene as solvent in an autoclave. XRD patterns strongly indicate that the synthesized sample was α-GaOOH. SEM and TEM images indicate that the product was composed of hyperbranched α-GaOOH nanocrystals. For the formation of α-GaOOH hierarchical nanoarch
itectures, the crystal splitting growth mechanism plays a dominant role, which has been evidenced by the characterization of the timedependent morphologies of the prepared samples.

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Chiral Shift Mechanism of Ibuprofen Molecule in Water
MEI Zemin, WANG Zuocheng, ZHAO Yanhui, TONG Hua, YAN Hongyan
Journal of Jilin University Science Edition. 2015, 53 (02):  331-339. 
Abstract ( 242 )   PDF (4223KB) ( 249 )  

The chiral shift mechanism of ibuprofen molecule in water was researched at the B3LYP/6-31+g(d,p) level, which is based on density functional theory. In addition, the structures of transition states and intermediates during the shift process from Stype to Rtype ibuprofen molecules were searched in water. At the MP2/631++g(d,p) level, the single point energies of transition states and intermediates were calculated, as well as zero point vibrational energies of the whole system were amended to get a higher energy. Then the potential energy surfaces of hydrogen transfer and the heterogeneous processes of intermediates on the chiral transition path of ibuprofen molecules in water were drawn. The results show that there are two paths to achieve chiral transition of ibuprofen molecule in water. The process of hydrogen transfer can be achieved with single or two water molecules as bridge. The highest energy barriers of the two paths both come from the transfer processes of hydrogen on the chiral carbon transfers to the oxygen on the carbonyl.

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Preparation of Lignin/Silica Hybrid fromBlack Liquor of Rice Straw Pulping
ZHANG Xiaojun, ZHAO Mingzhu, ZHAO Zhihai, YU Haihui, ZHOU Bing
Journal of Jilin University Science Edition. 2015, 53 (02):  340-343. 
Abstract ( 179 )   PDF (1434KB) ( 502 )  

Conditions were discussed to prepare lignin/silica hybrid in situ by means of acid precipitation method from the black liquor of rice straw pulping. The effects of pH and temperature on the yield and content of the hybrid were investigated in detail. The optimum conditions were a pH value of 3 and a reaction temperature of 50 ℃, under which the yield of lignin/silica hybrid was the greatest and the mass content of silica was 25.92%. The hybrid was characterized.

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HPLC Determination the Mass Ratios of TwoPentamethoxyflavones in Fructus aurantii
LI Min, SON SunIl, KANG HyonSok, SHI Xiaolei, LI Xuwen, JIN Yongri
Journal of Jilin University Science Edition. 2015, 53 (02):  344-347. 
Abstract ( 267 )   PDF (392KB) ( 279 )  

An RPHPLCDAD method was established for the determination of 5,6,7,3′,4′pentamethoxyflavone and 5,7,8,3′,4′pentamethoxyflavone. An Acchrom Unitary C18 (4.6 mm×250 mm,5 μm)Column was used. The mobile phase consisted of V(methanol)∶V(water)=52∶48, at a flow rate of 1.0 mL/min. The column temperature was 25.0 ℃ and the wavelength of DAD detector was set at 310 nm. The linear range of 5,6,7,3′,4′pentamethoxyflavone was 0.011—5.3 μg(r=0.999 9) and the mean recovery rate was 101.40%(RSD=1.22%), while the linear range of 5,7,8,3′,4′pentamethoxyflavone was 0.010—5.1 μg(r=0.999 9) and the mean recovery rate was 100.70% (RSD=1.51%). The mass ratios of two flaronoids were 0.094,0.015 mg/g respectively in Fructus aurantii-come from Hebei Anguo, while they were 0.22,0.032 mg/g respectively come from Anhui Bozhou.

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Transforming Polluted Soil’s Elements by the EffectiveMicroorganisms and Earthworms’ Action
DONG Weihua, XIN Shuquan, LIU Baolin
Journal of Jilin University Science Edition. 2015, 53 (02):  348-352. 
Abstract ( 166 )   PDF (406KB) ( 234 )  

In order to show the effects of Effective Microorganisms (EM) on earthworms and the role of their turning over elements in polluting soil, earthworms were covered up with soil with different amounts of EM added. After 28 d, earthworms’ body mass and cocoon numbers were measured. The mass ratios of soil organic matter, nitrogen and phosphorus were analyzed. The results show that the body mass of earthworms declined and daily body mass increments  were negative values after experiments. The body mass reduction, daily body mass  increments, and cocoon numbers of earthworms in the polluted soil with different amounts of EM were lower than those of the ones in the control without addition EM. The mass ratio of organic matter, total nitrogen, total phosphorus and pH values of soil with different amounts of EM were lower than those of that without EM and with only earthworm. The alteration laws of mass ratios of ammonium nitrogen, nitrate nitrogen and available phosphorus of soil with EM added were contrary to the aboved mentioned alternative rule.

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