Remote sensing of algal blooms using a turbidity-free function for near-infrared and red signals

HARMFUL ALGAL BLOOM ACTS UPON IMPORTANT ENVIRON-MENTAL PROBLEMS IN COASTAL WATERS.A UNIFIED AND IM-PLEMENTING METHOD FOR SURVEY AND MONITORING ALGALBLOOMS HAS BEEN DEVELOPED SINCE LAST DECADE.HOWEVER THERE IS A DATA GAP OF ABOUT TENS YEARS IN THE PERIOD W…     

基于WebGIS技术的海洋环境在线监测信息系统

在对海洋环境监测系统数据发布进行全面需求分析的基础上，引入WebGIS信息建立发布平台．该平台不但充分发挥了WebGIS的属性信息的发布和检索功能，而且整合了监测数据的实时聚类分析，对有害藻类密度进行预测．GIS结合互联网技术，扩大了传统地理信息发布平台的信息发布范围，直观而又高效地实现了海洋环境监测系统监测数据的网络共享．     

分布式环境下改进的Bloom Filter过滤技术

分析了Bloom Filter技术在特殊的分布式系统———P2P系统中的应用.基于Bloom Filter提出了一种新的Division Bloom Filter(DBF)技术,DBF技术采用了一组相互独立的哈希函数来计算数据对象的地址序列,然后使用这组地址序列将数据对象存储到一个分片的位向量中,所以DBF技术可以有效减少数据对象的存储空间.实验证明,DBF不仅可以解决Bloom Filter在分布式环境下的动态更新问题,还可以有效减少BloomFilter的错误率以及改善其稳定性.最后还使用数据压缩技术进一步减少在P2P系统中使用DBF技术的结点间通信代价.     

发动机有害排放物的控制

对发动机有害排放物进行研究分析，弄清排放物的化学成分及其产生的原因和危害，参考近年来对有害排放采取的一些处理措施。提出了一些自己的想法。     

农作物病虫机防优化调度系统的建立

本文主要介绍建立农作物病虫机防优化调度系统结构模型的方法,论述随机线性规划模型在该系统中的应用及参数计算方法。     

九龙甸水库突发水华的影响因子分析

九龙甸水库是楚雄市的重要供水水源地。2005年来该水库10-11月份在中营养的状态下发生水华。文章对影响水华的主要因子进行了分析，探讨了2005年水华发生的原因。该年特殊的降水特征、重新蓄水的水库水体稳定性条件和底泥营养物的释放可能是导致水华发生的关键因子。九龙甸的限制性营养盐是磷，底泥释放出的磷使得氮磷比降至19：1，有利于蓝藻获得竞争优势和水华发生。由于九龙甸水库的水质、水文状况在高原湖泊型水库中具有典型性，因此，本文对高原湖泊型水库的水华形成机理研究和防治具有重要的参考价值和意义。     

山西省林业有害植物主要种类及控灾对策

文章探讨了林业有害植物的概念及其在山西省的危害,提出对外来有害植物的预防及管理对策。     

渤海湾赤潮藻类细胞密度的超阈值分布

赤潮藻类的细胞密度超过一定的阈值就能形成危害巨大的赤潮。基于渤海湾赤潮藻类细胞密度的连续监测数据，运用极值理论研究了藻类细胞密度的超阈值分布特性．研究结果表明，赤潮藻类细胞密度的概率分布有比正态分布更重的尾部，服从Pareto型的超阈值分布函数。通过实际监测数据，建立了渤海湾赤潮藻类细胞密度的Pareto型超阈值分布函数，并通过该函数计算了藻类细胞密度分别超过给定阈值的风险概率。     

浅谈新居装修室内环境污染

通过对“新居综合症”现象的分析,确定了由于装修而产生的主要有毒有害气体,从而有针对性地提出了一些能有效避免及减少新居装修污染的措施。     

Cementing mechanism of algal crusts from desert area

34-, 17-, 4-, 1.5-year old natural algal crusts were collected from Shapotou Scientific Station of the Chinese Academy of Sciences, 40-day old field and greenhouse artificial algal crusts were in situ developed in the same sandy soil and the same place (37°27′N, 104°57′E). Their different cohesions both against wind force and pressure were measured respectively by a sandy wind-tunnel experiment and a penetrometer. On the basis of these algal crusts, the cementing mechanism was revealed from many subjects and different levels. The results showed that in the indoor artificial crusts with the weakest cohesion bunchy algal filaments were distributed in the surface of the crusts, produced few extracellular polymers (EPS), the binding capacity of the crusts just accomplished by mechanical bundle of algal filaments. For field crusts, most filaments grew toward the deeper layers of algal crusts, secreted much more EPS, and when organic matter content was more than 2.4 times of chlorophyll a, overmuch organic matter (primarily is EPS) began to gather onto the surface of the crusts and formed an organic layer in the relatively lower micro-area, and this made the crust cohesion increase 2.5 times. When the organic layer adsorbed and intercepted amounts of dusts, soil particles and sand grains scattered down from wind, it changed gradually into an inorganic layer in which inorganic matter dominated, and this made the crusts cohesion further enhanced 2–6 times. For crust-building species Microcoleus vaginatus, 88.5% of EPS were the acidic components, 78% were the acidic proteglycan of 380 kD. The uronic acid content accounted for 8% of proteglycan, and their free carboxyls were important sites of binding with metal cations from surrounding matrix.