Empirical analysis of constructional quality of concrete structures in rural house based on AHP and fuzzy comprehensive evaluation
The assessment of the basic idea and technical details about the constructional quality of concrete structures in rural house based on the AHP and fuzzy comprehensive evaluation method are discussed. The assessment level system are designed according to the reference named the state standard “Code for acceptance of constructional quality of structures in rural house” which is compiling. Delphi-method, analytic hierarchy process and fuzzy comprehensive evaluation method are comprehensively utilized. The awareness and satisfaction in quality of the concrete structures in rural house about the managers and farmers are revealed. The satisfaction degree of the constructional quality of concrete structures in rural house belongs to the average. Concrete quality inspection, Concrete preparation and concrete casting should be focused on in the improvement process of constructional quality of concrete structures in rural house.
Study of stability gradation of highway rock slopes based on fuzzy comprehensive evaluation
Highway rock slopes have the characteristics including spot distribution along the road,long interval,small scale and large quantity,little statistics and easy to be influenced by engineering and environment,lack of detailed rock mechanical parameters;and it is difficult to apply the current evaluation system.Based on the characteristics of highway rock slope,considering the systematicness and comprehensiveness,conciseness and scientificity,independence and operability,a reasonable slope stability evaluation index system has been set up;and the stability gradation model for highway rock slopes has been established by using the fuzzy comprehensive evaluation.This model has been applied to Changde-Jishou Highway in Hunan province to analyze the stability of 142 high rock slopes;and the results are reasonable and confirm to reality.Practical so as to provide for reference to other similar projects.
Exopolysaccharide biosynthesis and related enzyme activities of the medicinal fungus, Ganoderma lucidum, grown on lactose in a bioreactor
Exopolysaccharide (EPS) production and biosynthesis were studied in Ganoderma lucidum, a fungus used in traditional Chinese medicine, grown with lactose in a bioreactor. β-Galactosidase activity, which implies the existence of a lactose permease system, was induced by lactose. Lactose feeding also increased α-phosphoglucomutase activity and EPS accumulation but decreased phosphoglucose isomerase activity and lactate concentration in the culture broth. A maximum cell density of 22 g l−1 and EPS at 1.25 g l−1 were obtained in fed-batch bioreactor culture.