1Separation and determination of sulfur in selenium powder by ion exchange resinWANG Yan-juan, ZHANG Yu-yang, TIAN Ming, ZHANG Na, JIA Li-na, XU Qian, DENG Gui-chun, ZHANG Shu-liangChemistry and Chemical Industry97-1002Study of polythiophene, poly-3-methyl-thiophene and poly (3,4-ethylendioxythiophene) as supercapacitor electrode materialsWANG Peng, JIA Li-xin, CHEN Xue-si, JING Xia-binChemistry and Chemical Industry101-1053Synthesis of sulfurized alkylphenolic antioxidant(T503)WANG Dong-Xin, LENG Ming-WeiChemistry and Chemical Industry106-1084Studies on chemical constituents of lonicera japonica thunbLIU Jia-chuan, YU Li-liChemistry and Chemical Industry109-1105Determination of content of reduction-type vitamin C in green pepperMA Zhan-ling, MA Zhan-biao, XIA Yun-sheng, CHEN YangChemistry and Chemical Industry111-1136On the arithmetic functional equation P(m)=P(n)LE Mao-huaMathematics Research114-1157Optimal benefit model of insurance in life annuityWANG Yan-jie, MA Yan-fen, QIAN Wei-yiMathematics Research116-1178S-connectedness in LF topological spadeLU Zhi-yuanMathematics Research118-1209Oscillation of systems of certain second order neutral partial differential equation with several delaysLIN Wen-xianMathematics Research121-12310Advantage of ridge regression ouer LS in solving multicollinearityLI Li, ZHAO Wei, WANG Zhi-fuMathematics Research124-12611Asymptotic stability and stabilization for singular systems with uncertainty and time-delayWANG Ai-hong, GONG Chang-zhongMathematics Research127-12912Product and coproduct of group category and module categoryMENG PengMathematics Research130-13313New method for calculating Jordan chainLI WeiMathematics Research134-13514Tectonic control activities on CBM reservoir and accumulation in Northwest ChinaZHOU Tie-jin, YAO Yan-binPhysics and Engineering136-14115Methods of electric load forecastingCHEN JianPhysics and Engineering142-14416EMC design & analysis on electronic facilitiesPAN LinPhysics and Engineering145-14817Calculation of magnetic field at elliptical focusYUAN Quan, ZHAO Li-cheng, LI Jiu-huiPhysics and Engineering149-15018Measuring level branching quantity of the earth's magnetic field with digital quantometerFU Shi-minPhysics and Engineering151-15219Application of virtual work principle in ElectrostaticsLIU Jing-shiPhysics and Engineering153-15520Interpretation to metal's conductivityZHAO Peng-huaPhysics and Engineering156-158 