安全控制论原理和应用

以系统论、信息论、控制论为指导思想,结合安全系统工程现场实践,对开发、完善安全控制论的理论体系及其应用等方面研究成果作了简要介绍,包括安全控制论的数学模型,安全系统的控制方式,安全计量及其在安全评价等方面的应用.     

微电子远红外联动仪在胶带喷雾降尘系统中的应用

阐述了微电子远红外联动仪在胶带喷雾降尘系统中的流程、设备特性及运行效果。     

脉冲布袋除尘器净化分银炉含酸碱烟气的控制

介绍了用于净化铅锌冶炼厂分银炉含酸碱烟气的脉冲布袋除尘器的控制。从烟气温度控制、脉冲布袋除尘器清灰控制两个方面作了说明。     

兰州城市大气污染和可能的技术控制措施

利用大气污染源和环境监测等资料,计算分析了兰州市区大气污染及其治理现状。结果表明,在兰州市区,燃煤占全部能源的71 %; S02年排放量为5. 96万t,烟尘为6. 54万t ;汽车尾气己成为主要大气污染源之一。市区S02浓度日均值在采暖期超标,而TSP一年四季都超 标。指出采用以集中供热、煤气、型煤和控制汽车尾气为主要措施,兼顾绿化和太阳能利用,制定市区大气污染治理方案比较合理。      

克拉玛依市区大气污染特征及防治对策

该文评价了克拉玛依市区的大气环境质量现状,并分析了大气污染的主要特征及其产生的原因,得出了相应结论:市区的大气污染以尘 污染为主,主要污染物是降尘和总悬浮颗粒物,最后提出了一些具体的防治对策。      

黄山风景区旅游水供需系统安全及动态调控研究

山岳型风景区由于其独特的地形地貌条件,工程性供水难度大,随着区内床位数和游客量的不断增加,水供需矛盾更为突出,成为山岳型风景区旅游可持续发展的关键制约因素之一,黄山风景区尤具代表性。论文通过典型年分析法,对黄山风景区各月各供水片区的水供需系统进行深入分析,认为:①黄山风景区总体上供水量不足,缺水态势明显,且存在时间、空间、丰枯水期等方面的矛盾;②建立水供需动态调控模型,通过水库和引提水工程调节供水是改善黄山风景区供水短缺的重要途径;③通过现有各分片水库的调节和五里桥水库提水上山,可分别解决目前和中期供水问题,远期若建立钓桥水库,形成全山供水连片,可达到远期水供需平衡。     

钻孔灌注桩的施工质量控制

作者结合多年的钻孔灌注桩施工实践与理论知识,对影响其施工的质量问题进行分析探讨,并提出与之相对应的质量控制措施．参6．     

Cost-Effective Suppression and Eradication of Invasive Predators

Abstract: Introduced predators can have pronounced effects on naïve prey species; thus, predator control is often essential for conservation of threatened native species. Complete eradication of the predator, although desirable, may be elusive in budget‐limited situations, whereas predator suppression is more feasible and may still achieve conservation goals. We used a stochastic predator–prey model based on a Lotka‐Volterra system to investigate the cost‐effectiveness of predator control to achieve prey conservation. We compared five control strategies: immediate eradication, removal of a constant number of predators (fixed‐number control), removal of a constant proportion of predators (fixed‐rate control), removal of predators that exceed a predetermined threshold (upper‐trigger harvest), and removal of predators whenever their population falls below a lower predetermined threshold (lower‐trigger harvest). We looked at the performance of these strategies when managers could always remove the full number of predators targeted by each strategy, subject to budget availability. Under this assumption immediate eradication reduced the threat to the prey population the most. We then examined the effect of reduced management success in meeting removal targets, assuming removal is more difficult at low predator densities. In this case there was a pronounced reduction in performance of the immediate eradication, fixed‐number, and lower‐trigger strategies. Although immediate eradication still yielded the highest expected minimum prey population size, upper‐trigger harvest yielded the lowest probability of prey extinction and the greatest return on investment (as measured by improvement in expected minimum population size per amount spent). Upper‐trigger harvest was relatively successful because it operated when predator density was highest, which is when predator removal targets can be more easily met and the effect of predators on the prey is most damaging. This suggests that controlling predators only when they are most abundant is the “best” strategy when financial resources are limited and eradication is unlikely.     

基于STC12C5410AD的电铃无线控制系统

针对传统电铃采用单一作息时间表进行专线控制的缺点,设计了一种能无线控制、又能同时存储多个作息时间表的电铃控制系统．该系统用无线代替专线,存储有多个时间表,在季节变更时通过控制器自动变换表,解决了传统电铃控制系统中的专线成本高、维修难、季节变换需要人工改表的问题．图5,表2,参4．     

喷消石灰脱除垃圾焚烧炉尾气中HCl和SO2的试验研究

在日处理200t进口流化床垃圾焚烧炉上,进行烟气喷水降温加上喷消石灰粉末脱除尾气中的酸性气体HCl和SO2的试验研究,HCl和SO2浓度由布袋除尘器出口的在线气体分析仪测得,结果表明HCl和SO2的去除率在Ca/Cl摩尔比等于9时分别为80%和20%,说明该法消石灰利用率较低,宜改为半干法脱除HCl和SO2酸性气体,以便降低吸收剂用量,提高运行的经济性.