“互联网+”连续流动反应器返混测定实验装置的建设和应用

“互联网+工程试验”是工科实践教学发展的新趋势。基于万维网远程监控和可编程序控制器(PLC)现场监控的方法,对连续流动反应器中的返混测定实验远程监控装置进行设计和建设,能够实现实验的智能化远程控制。此实验装置具有操作简单、安全和精度高的优点,已用于化学工程与工艺专业两届学生的实验教学,既解决了实验装置台套数不足和占地空间大的问题,又保证每位学生能独立进行实验操作,取得了良好的实验教学效果。     

生产实时监控系统在石油化工企业中的应用

针对石油化工企业生产过程中对装置设备实时监控的需求,设计一种基于Web应用的三层B/S架构的实时监控系统。该系统依托现有的DCS系统和AspenTech InfoPlus.21实时数据库,实现对生产装置及设备运行状态的远程实时监控,使生产过程更加的安全、平稳、高效。     

聚合釜远程监控系统的开发

对聚合釜设备的远程监控系统的开发背景、技术基础、远程监控的实现以及应用过程进行了阐述,同时分析了聚合釜远程监控系统的应用效果和作用。     

硫酸工业阳极保护技术的最新进展

从阳极保护技术的应用拓展和智能化、信息化两方面介绍硫酸工业中阳极保护技术的最新进展.分述了阳极保护不锈钢循环酸储槽、阳极保护碳钢成品酸储槽、阳极保护酸冷却器漏酸监测仪、阳极保护分酸器液位监测装置和阳极保护远程监控、预警及故障诊断系统.其中阳极保护远程监控、预警及故障诊断系统借助当今先进的信息化技术,将物联网技术引入阳极保护设备管理,可对阳极保护设备实施远程、实时、动态监控,以及远程维护和故障诊断.     

物联网技术在生物除臭工程中的实践应用

由于恶臭处理设施分散,且使用过程中缺少足够重视,除臭装置通常运行效率低下。本项目针对生物除臭设施运行中的常见问题,搭建了基于物联网的除臭系统远程智能监控平台,该系统由传感层、传输层和应用层构成,详细阐述了各层的实现方式与功能。在该系统上实现了异地污水厂分散除臭装置的统一监控,发挥了监控效益,实现了在线除臭装置的高效、节能运行和运行数据的有效收集,展现了物联网技术在除臭系统中应用的可行性与价值,为进一步拓开物联网在除臭领域的应用积累了重要经验。     

远程监控技术及其应用发展

从工业自动化远程监控系统通信网络角度出发,介绍工业通信网络和远程通信网络中的关键技术。详细阐述了基于B/S模式的3种远程监控系统。分析了各种通信技术和监控技术的优缺点和发展趋势。最后给出了远程监控技术的应用前景。     

变电站远程数字视频监控系统建设经验

结合中山供电局变电站远程数字视频监控系统的工程实践,介绍远程数字视频监控技术在电力系统的应用,同时详细介绍变电站远程数字视频监控系统的构架、功能、应用推广等方面内容。     

苯乙烯悬浮聚合实训系统的开发

开发了苯乙烯悬浮聚合实训系统,利用力控组态软件实现苯乙烯悬浮聚合装置的监控、自主学习及远程操作,所构建的实验教学装置计算机监控系统运行稳定、安全可靠。     

网络化学虚拟仪器实验室开发与应用

网络虚拟仪器是当前自动化测试的主流发展方向,也是通过互联网实现远程实时实验教学新的研究领域。文章简介了基于LabVIEW的C/S、B/S两种组网模式及其实现技术,构建了几种基于LabVIEW现场化学虚拟仪器及远程监控系统,通过网络实现了远程实时数据共享、远程监控化学实验及在线实时实验教学。网络虚拟仪器在远程实验教学中具有广阔的应用前景。     

远程监控及智能化系统在矿山工程机械中的应用

概述了矿山机械设备安全管理的重要意义,介绍了远程监控与智能化系统基础功能及技术指标参数,分析了远程监控与智能化系统在工程机械性能检测与分析系统及人机页面系统的具体技术应用效果。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。