河湖水系生态连通布局方案优选技术平台研究

河湖水系生态连通是维系流域健康的重要举措之一。河道之间能否有效连通及功能的发挥程度与河湖水系的连通方案紧密相关。为准确高效地确定最优设计方案,以水系连通的理论定义为基础,研发了河湖水系连通“三层三库三模块”规划布局方案优选平台(RLCPP),以优选河湖水系连通的具体路径。数据平台以数据库、模型库、案例库“三库”作为支撑层,与功能层、交互层统一结合,并利用水系提取、图模型构建等关键技术,综合集成了水系连通规划方案优选分析、水量-水质-生态耦合分析模型集成及河湖水系生态连通案例库管理三大功能模块。平台可为河网水系连通规划制定及连通方案优化提供技术支撑。

Fingerprinting Patterns of SSR Markers Constructed for 33 Loquat[Eriobotrya japonica (Thunb. ) Lindl. ]Germplasms

[ Objective ] This study aimed to explore the ways of using SSR technology to construct the fingerprinting maps of the loquat. [ Method ] Fingerprinting patterns of the SSR markers for 33 loquat varieties in national loquat germplasm resource garden were constructed by specifically amplifying palymorphism from 7 pairs of primers screened from 51 pairs of primers of the relatives Mains and Pyrus. [ Result ] The results showed that the uses of 7 primers, namely, Hi01d05F, Hil2iO4F, CH02B10F, Hi03a03, Hi03e04, Hi04a05 and Hi02c07 could distinguish 33 loquat germplasms from one another completely. [ Conclusion] This study provides an essential criterion for classification and identification of the loquat resources.

熔模铸造注蜡过程的数值模拟

测量了CL162型蜡料的热物性参数,并基于Moldflow软件对某环形构件的注蜡过程进行了模拟。为评价模拟结果的准确性,在同等工艺条件下开展注蜡成形试验。结果表明,蜡料粘度随着温度升高或剪切速率增大而迅速降低,显示出典型的非牛顿流体特征。注蜡过程模拟展现了蜡料的充型细节,预测了蜡模表面缩痕及收缩变形规律。结果表明蜡模的测量数据与模拟结果符合,验证了模拟的准确性。