采用植物还原法制备纳米银,改性制得具有抗生物污染性能的复合膜.试验结果表明:艾叶制备的纳米银含量较高,在乙醇有机溶剂中不完全聚沉,TEM表征结果显示其颗粒分散性较好,粒径在0.8～16 nm,平均粒径为4.97 nm.改性后的复合膜孔隙结构发生改变,分离层溶洞空间缩小,骨状蜂窝型筛分结构增加;平均孔径进一步缩小至12.082 nm,比表面积和孔容分别增大了120.74％,23.10％.

针对开源GIS软件需要针对不同的应用场景和功能需求,筛选出多个软件进行组合集成应用的现状,为提升组合集成效率,按照典型的WebGIS系统的构建过程,从数据加工、数据存储、地图发布、空间分析、前端展示5个方面对常见的开源GIS软件进行整理分类.结合水利行业中所遇到的软硬件条件差异、网络环境不同、功能需求不同等方面,抽象出4个不同的应用场景,从功能、易用性、使用的广泛性和软件许可等几个方面进行筛选,构建软件的组合方案,提供系统案例,为开源GIS软件在水利行业中的应用提供指导作用.从应用结果看,4套方案覆盖了不同层次的应用需求,开发人员可依据需求快速准确确定解决方案,达到降低成本,快速构建相关GIS功能的目的.

With the continuous development of the intelligent water conservancy industry, it is urgently to “make up the shortcomings and strengthen the weaknesses” for the traditional water conservancy project construction. This paper takes the kiwifruit planting base in Heilin Town, Ganyu District, Lianyungang City as the control object, and uses Schneider TM221 integrated PLC module as a controller to build an intelligent irrigation system. The system uses sensors to collect data such as irrigation flow, soil moisture, meteorological information, the water level of the reservoir and water quality, and the collected data is monitored by the designed upper computer monitoring software. So that users can switch valves remotely. This system meets users’ needs for monitoring during the irrigation process, irrigation quality analysis and improvement of irrigation processes, so as to achieve automatic operation of irrigation, analysis and other processes, and achieve a double harvest of social and economic benefits.

利用雷达探测技术,以绑有水葫芦的标准泡沫板为目标物,系统研究了水浮植物雷达对水葫芦目标识别能力、探测范围以及距离、面积、速度测量性能.试验结果表明:水浮植物雷达可以区分水面、墙体以及水葫芦,径向探测距离为37～114.5 m,不同径向距离的平均测距误差均在0.6％以内.在雷达3°/s扇扫速度小范围扇扫模式下,远距离比近距离面积测量平均误差高26.99％;同一距离,12°/s比3°/s扇扫速度的面积测量平均误差低12.13％.另外,在0.1～1.0 m/s的目标速度测量范围内,雷达对水葫芦的测速均方误差百分比不超过8％.

This article introduces the design scheme of the tracking small diameter water level gauge, from the instrument structure, working principle, features, technical specifications and other aspects. Through the type test and analysis of a prototype, the test results show that the water level gauge is stable, and reliable and high precision is meet the design requirements. The tracking small diameter water level gauge is stable, with no temperature drift, no time drift, high cost performance and is suitable for small caliber applications. So it has wide application prospects.

Aiming at the application of MEMS technology in the field of velocity measurement,based on MEMS technology an online current meter was designed.In order to optimize the sensor probe structure design and chip selection,the flow of fluid dynamics model was established by the method of CFD.The current meter temperature field distribution of different diameter was developed from the fluid-structure coupling heat transfer calculation,for the external convective heat transfer coupling-complex thermal boundary conditions of the sensor.The modified equation of the probe temperature T and the flow velocity V and pipe diameter D was established,with the method of genetic algorithm,applying to fit the calculation results of CFD.Test results show that:the temperature of sensor probe decreases in the form of exponential with the increase of flow velocity and decreases with the increase of the probe diameter.When the flow rate is less than 0.1 m/s,the temperature of sensor probe decrease sharply with the reduce of flow velocity,the precision is higher within the speed range.

The design of integrated automatic measurement and control system for gates is developed to adapt the status and features of small-scale gates, with the functions of information collection, automatic control, communication and network, video surveillance and etc. The open network information and control platform, based on X86 platform and field bus technology, is adopted to fulfill the solidification design of automatic control function of gates. And the personalized customization is carried out according to the special needs of users. The system can work well in the harsh operating environments. It has the advantages of full mission, strong expansion, friendly man-machine interface, low requirements of operators, high reliability, convenient installation, economy and etc. The system can fulfil the monitoring and scheduling demands for water resources.

In recent years,the lake administrative department of Lixia River insists on leading lakes management modernization construction by informatization.They gave great impetus to geographic information application in lake management.They organized and researched the management and protection geographic information technologies.Combining application situation of geographic information technologies in Lixia River lake management,the article focuses on GIS's construction goal,overall architecture,development mode,key technologies,the application situation of GPS patrolled subsystem in Lixia River.It is aimed at completely introducing technology route and implementation method of constructing lakes information system to promote the course of lakes regional management informatization in our country.

借鉴泵站经济运行、城市给水排水及流域综合调度控制的思想,提出城市排水系统的集中控制及建立优化调度模型,实现城市排水系统的统一优化调度运行,使得城市的排水闸站及管网等资源能被进一步利用。