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您的检索式：作者名="yang dazhuang"
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| 1 | Biofilm structure and its influence on clogging in drip irrigation emitters distributing reclaimed wastewater显示文摘Using reclaimed wastewater for crop irrigation is a practical alternative to discharge wastewater treatment plant effluents into surface waters.However,biofouling has been identified as a major contributor to emitter clogging in drip irrigation systems distributing reclaimed wastewater.Little is known about the biofilm structure and its influence on clogging in the drip emitter flow path.This study was first to investigate the microbial characteristics of mature biofilms present in the emitters and the effect of flow path structures on the biofilm microbial communities.The analysis of biofilm matrix structure using a scanning electron microscopy(SEM) revealed that particles in the matrix of the biofilm coupled extracellular polysaccharides(EPS) and formed sediment in the emitter flow path.Analysis of biofilm mass including protein,polysaccharide,and phospholipid fatty acids(PLFAs) showed that emitter flow path style influenced biofilm community structure and diversity.The correlations of biofilm biomass and discharge reduction after 360 h irrigation were computed and suggest that PFLAs provide the best correlation coeffcient.Comparatively,the emitter with the unsymmetrical dentate structure and shorter flow path(Emitter C) had the best anti-clogging capability.By optimizing the dentate structure,the internal flow pattern within the flow path could be enhanced as an important method to control the biofilm within emitter flow path.This study established electron microscope techniques and biochemical microbial analysis methods that may provide a framework for future emitter biofilm studies. | YAN Dazhuang BAI Zhihui Mike Rowan GU Likun Ren Shumei YANG Peiling | 2009 | Journal of Environmental Sciences2009，21，6： | 4 |
| 2 | Mechanical and Thermal Expansion Properties of SiCp/ZAlSi9Mg Composites Produced by Centrifugal Casting显示文摘Centrifugal casting was applied to produce cylindrical castings using SiCp/Al composite slurry,which contained 20%SiC particles.The castings comprised a particle free zone and a particle rich zone.The amount of SiC particles had a dramatic transformation from the particle rich zone to the particle free zone,and the maximum content of SiC particles in the particle rich zone reached up to 40 vol%.The ultimate tensile strength(UTS) of the as-cast SiCp / Al composites in the particle rich zone was 143 MPa,and the fracture was caused by the desorption of SiC particles from matrix alloy.The coefficient of thermal expansion(CTE) of the SiC_p / Al composites in the range of 20 and 100 ℃ was determined as 16.67×10^(-6) s^(-1),and the experimental CTE was lower than the predicted data based on the Kerner's model.The results show that the decrease in CTE in the case of the composites at high temperature stage can be attributed to the solute concentration of Si in Al and the plastic deformation of the matrix alloy in the composites with void architecture. | 王开 jiang tao huang zhili xue hansong yang dazhuang zhu zizong | 2016 | Journal of Wuhan University of Technology(Materials Science)2016，31，1： | 2 |
| 3 | Biofilm accumulation and structure in the flow path of drip emitters using reclaimed wastewater显示文摘 | Yan Dazhuang Yang Peiling Rowan M | 2010 | Transaction of ASABE2010，53，3： | 1 |
| 4 | Hollow Fe_(2)O_(3)/Co_(3)O_(4)microcubes derived from metal-organic framework for enhanced sensing performance towards acetone显示文摘In this work,hollow Fe_(2)O_(3)/Co_(3)O_(4)microcubes have been successfully synthesized through a hydrothermal method followed by an annealing process using metal-organic framework of Prussian blue as a soft template.The morphologies,microstructures,surface area and element compositions have been carefully characterized by a series of techniques.Meanwhile,compared with that of pure Fe_(2)O_(3)and Co_(3)O_(4),the gas sensor based on the hollow microcubes exhibits enhanced sensing performances towards acetone,e.g.,a higher response of 21.2 and a shorter response time of 5 s towards 20 ppm acetone at a relatively low working temperature of 200℃.Moreover,the hollow microcubes-based gas sensor still shows perfect long-term stability,excellent repeatability and the ability of sub-ppm level detection,which provides a possibility for its application in real life.The enhanced gas sensing performances can be attributed to the hollow structure with a high surface area and the formed p-n heterojunctions within the microcubes. | Ruixue Mo Dongqiang Han Zeng Ren Dazhuang Yang Fei Wang Caolong Li | 2021 | Chinese Chemical Letters2021，32，11： | 1 |
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