Papers by Author: Yan Qiao Wang

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Authors: Si Hong Liu, Yan Qiao Wang, Jiao Rong Gao, Yuan Zheng Jin
Abstract: Soilbags have been understood to have the effect of vibration reduction and can be used as a kind of base isolation in building foundations. In this paper, a series of cyclic simple shear tests were carried out on soilbags filled with three kinds of soils under different vertical stresses to investigate the damping and stiffness characters of the soilbags. The results show that soilbags have a relatively high damping ratio and variable horizontal stiffness so that they can be used as base isolation materials.
Authors: Li Ming Zhang, Yan Qiao Wang, Li Chao Zhang, Shu Li Man, Bei Mei Zuo
Abstract: Yam glycoprotein (YGP) is an important source of bioactives for functional foods. To investigate the effects of alkaline extracting method on the features of YGP, A glycoprotein was isolated from yam tubers by using alkaline processing method, and purified by ion-exchange and gel filtration column chromatography. During the SDS-PAGE eletrophoresis, the result shows a band with approximately 30 kDa molecular weight. The YGP consists of protein moiety (62.34%) and carbohydrate moiety (37.51%), respectively. By the automatic amino acid analyzer detecting, it indicated that the YGP consists of 17 kinds of amino acids and contains a high percentage of glutamic acid and aspartic acid. The results of thin-layer chromatography show that oligosaccharides of the YGP contain D-glucose, D-galactose and mannose.
Authors: Xian Li, Yan Qiao Wang, Li Hong Liu
Abstract: The spatial-temporal variability of karst water chemistry is affected by lithological information, precipitation and agricultural activities. Based on the data of 10 hydro-chemical monitoring stations in Houzhai karst basin from 1989 to 2001, the spatial-temporal variability of karst water chemistry and the relationships between karst water chemistry dynamic and their main control factors were interpreted and analyzed by using the integrating methods of the stochastic theory and geostatistics. The results indicate that the karst water chemistry dynamic of Houzhai karst basin show obvious spatial-temporal distribution characteristics. The temporal variations of main ions are closely related to precipitation. The main ions vary regularly in space because of lithological and karst morphology, but the spatial variations of K+, Na+ are controlled by agricultural activities.
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