Microecological Analysis on Seaweed Leaf Surface for High-salt Wastewater Treatment by Using Ulva lactuca

Ulva lactuca, a large intertidal green alga, has played a significant role in removing nitrogen and phosphorus nutrients in waters. However, no detailed information is available on microecology of leaf surface for high-salt wastewater treatment by using Ulva lactuca. Therefore, this study investigated the microbial community feature of seaweed surface and wastewater through high-throughput sequencing technology for high-salt wastewater treatment by using Ulva lactuca. The results showed that the microbial diversity and abundance of algal surface were higher than those of wastewater. The dominant bacteria on algal surface included Bacillus, Exiguobacterium,Fictibacillus and Brevibacterium. Bacillus accounted for more than 70% of the total microorganisms on algal surface, serving as the main dominant bacterium. Bacillus genus and Exiguobacterium genus were the main species in the wastewater, accounting for over 99% of the total microorganisms. The algal surface was more conducive to the growth and distribution of microorganisms than the water with the fluidity

Separation, identification and performance of heterotrophic nitrification and aerobic denitrification bacteria from bioflocs in aquacultural system

A heterotrophic nitrification and aerobic denitrification strain L3 was separated and identified from bioflocs in the aquacultural system, to investigate the influential factors of bacterial growth and the denitrification performance. The result of 16S rRNA gene sequence analysis showed that the strain L3 was Pseudomonas. The optimum pH for the growth of strain L3 was 6 to 8, the suitable carbon source was sodium succinate, and the optimum temperature was 25-35℃, with the optimum C/N from 10 to 15. The strain L3 could tolerate the high ammonia concentration. By studying the characteristics of heterotrophic nitrification and aerobic denitrification, the strain L3 was found to preferentially remove ammonia and had good aerobic denitrification performance

Development and Experiment of End-effector for Kiwifruit Harvesting Robot

进行了棚架式栽培模式自然生长条件下簇生猕猴桃无损采摘机器人末端执行器的研究。基于果实与果柄的分离特性，提出面向机器人的果实采摘方法和简化几何模型，设计了果实与果柄的分离试验进行可行性验证；基于果实采摘方法设计了从底部接近、旋转包络分离毗邻果实并抓取、向上运动分离果实的末端执行器，并试制样机，进行了现场评价试验。结果表明，采摘模型能够实现果实与果柄的分离，末端执行器解决了毗邻果实分离问题，能够实现单个果实稳定抓取、无损采摘和采后抓持，成功率达到 96.0%，平均单果耗时 22s

薄膜辐射热探测器

薄膜辐射热探测器是一种结构简单,灵敏度高,响应快速的辐射热测量元件,特别适用于短时间超声速设备中的辐射测量,也可以在辐射能的标定中使用。这种探测器是在通常薄膜电阻温度计的表面上覆盖一层碳黑类物质,以增加它的吸收率和扩大吸收谱的宽度,且减少吸收率随波长的变化

塔里木河中下游荒漠化防治与生态系统管理研究与示范

该项目成果建立了荒漠区生态环境与经济和谐发展的模式，为正确处理生态环境建设与经济发展的关系提供了理论依据；建立了塔里木河中下游土地利用的5种模式和适宜性评价体系；创立了塔里木河中下游生态经济型植被的模式和结构优化配置方案；提出了6项绿洲灌溉农业节水节肥和棉花高产技术；确定了维护塔里木河中下游至大西海子和台特马湖生态安全的最低年需水量、最佳输水期，提出了塔里木河中下游天然植被合理地下水位的科学依据；揭示了塔里木河中下游30年断流输水后地表生态的响应规律；构建了数字塔河的框架，完成了水、土、植被等23个因子的图层