1A New Characterization of Congruence on L-fuzzy SemigroupZHANG Ze-zeng1-2,242On Fuzzy Nil-Nilpotent Properties of Rings1CHEN Wei-xing, ZHAO Jian-li, CHEN Gui-ying3-63U-subspace of LF-topology SpaceYU Xi-chang, HU Kai7-8,354Synthesis and Crystal Structure of Organotin Complex Ph3Sn(OOCC6H4NCHC6H4OH-2)YIN Han-dong, LI Lin-wei, WANG Qi-bao, XUE Sheng-cai9-10,285Synthesis and Crystal Structures of Organotin Compound {(PhCH2)2Sn[4-NC5H4CON2 C(CH3)CO2](H2O)}2HONG Min, YIN Han-dong11-12,336Impulsive Synchronization of Chaotic Dynamical SystemsGUO Zeng-xiao, ZHANG Gang13-157The Existence Of Two Positive Solutions Of Super-linear Singular Functional Boundary Value ProblemsWANG Xin-hua, LIU Qi-de16-188Periodic Solutions of the Second-order Hamilton Systems with Subqudratic Function PotentialSHI Yi-xia19-20,399Surface Integrals Containing ParameterYU Xing-jiang21-2410EP Matrices and k-EP Matrices over Quaternion FieldZHANG Li-mei, LI Li-qun, QIAO Li-shan, ZHAO Lin-lin25-2811Coefficient Condition of Local Topological Structure for Plane Homogeneous Fifth SystemCHENG Xue-mei29-3012Classification and Implementation of B Spline Curve Based on OpenGLCAO Xin-jiang, WANG Shu-qing, CHEN Hua31-3313The Geodesic Main Torsion and Torsion LineLI Jin-hui, CHEN Hai-jun, WANG Shu-yun34-3514Effect of Structural Parameters on Current-Voltage Characteristics in a Three-quantum-well Superlattice UnitZHANG Zhuo, SUN Jin-zuo36-3915Determination and Study on Thermodynamical Properties of KBph4 in (CH3OH-H2O) Mixtures at 298.15 KLI Lin-wei, WEI Xin-ting, DU Ling-yun40-42,4916Analysis of Chemical Component of Essential Oil from Ginger by GC/MSCUI Qing-xin, DONG Yan43-4517Synthesis, Characterization and Electronic Absorption Spectra of Two New Phthalocyanine Compounds with Azo Substituents on Phthalocyanine RingJIANG Zhao-bo, LAO Zhen-hua46-4918Synthesis of a New Reactive SurfactantHE Qing-peng, YAO Chang-bin, GAO Tai-ming, SANG Zhi-qiang50-5219Studies on Pollinating Habit and Pollen Tube Growth Course of Lagerstroemia indica L.CHEN Yan, ZHOU Jian53-54,9620Application of the Fuzzy Mathematics Method in Assessment on Sensitivity to Land DesertificationGUO Ting-zhong, YANG Yong-fang55-58