1Improvements of the overconstraint analysis steps for parallel mechanisms based on screw theoryWANG Jian-xiaoElectromechanics and Automation1-92Design of DC digital voltmeter based on Proteus and MedWin V3.0YAN MinElectromechanics and Automation10-143Parametric modeling and motion simulation of chain transmission device based on SolidWorksCHEN Lei, DAI Li-hua, LIU Li, CAO Ji-junElectromechanics and Automation15-194Ultrasonic measurement of angle between celiac trunk and aorta and the peak blood flow of celiac trunk in children aged 6～12 years oldWANG Yu-ying, WEI De-zhan, NING Hao-jie, XIE Hong-jiMedicine20-245Effect of psychological intervention on postoperative pain in patients with mini-implant anchorage implantationAI Yi-longMedicine25-286Blow up and decay of a class of sequencesWANG Cheng-qiangMathematic Science29-327Study on the calculation methods of double limit and its explanations in multivariable calculus courseMA Yan-li, CHU Zheng-qingMathematic Science33-388On involution BCK-algebrasLING Xue-minMathematic Science39-43,609The influence of deep foundation excavation pit on adjacent metroLU Zhi-jieCivil Engineering44-4710Experimental strengthening performance of a prestressed concrete simply supported hollow slab bridgeGAO YongCivil Engineering48-5411Orthogonal frequency division multiplexing with extended subcarrier indexLIU Xue-hua, WANG Jian, LUO Jia-bing, HUANG Fu-chun, HONG QinInformation Science55-6012Application of channel technology in the construction of computer laboratory in colleges and universitiesSHAO Lin, GU YuanInformation Science61-6313Efficient security authentication algorithms for vehicle networking information based on message poolLI NanInformation Science64-6814Study on the rheological parameters of holothuria scabra under different cooking conditionsLIANG Jing-lin, ZHONG Ming, ZENG Qiao-huiAgriculture and Biotechnology69-7315Applications of pyridine in organic synthesisWANG Lei, LIU Zhong-fu, XIAO Lu-feiAgriculture and Biotechnology74-80 