超滤技术在现代中药生产中的应用

综述了超滤技术在中药现代化中的应用现状和发展趋势，包括超滤技术的基本原理和应用举例。同时指出了超滤技术的现存问题和发展方向等。     

预氧化耦合超滤工艺净化处理含藻水研究进展

湖库等水源地藻类暴发问题依然突出，严重威胁着居民的饮水安全。超滤可以有效截留藻细胞，但在含藻水净化时仍面临着溶解性有机物去除率低、膜污染等瓶颈。为提升净化效率，氧化预处理耦合超滤工艺在含藻水处理领域受到了越来越多的关注。基于此，文章系统地分析了超滤工艺净化含藻水的效能，综述了氯、臭氧、紫外、过硫酸盐和高锰酸盐耦合超滤工艺净化含藻水的研究进展，对氧化预处理耦合超滤工艺净化含藻水的应用前景进行了总结和展望。     

超滤油分技术在冰机冷冻系统应用总结

分析了超滤油分在冰机制冷系统应用的原理及其必要性，介绍了在冰机出口总管至气氨冷凝器之间串入冰机超滤油分的改造方案。实际应用情况表明，在冰机制冷系统采用超滤油分，可回收90％的冰机油，并可明显改善冰机和合成系统的运行工况。     

超滤技术在化肥生产中的运用(上)

概述了超滤技术的工作原理及其在化肥生产中的应用，探讨了超滤技术在应用中应该注意的问题。     

超滤装置在阴极电泳中的应用

介绍了几种应用广泛的超滤装置的构造及原理，重点讲述了超滤装置在车身阴极电泳涂装中的选型要求，以及使用、维护注意事项。     

超声波强化超滤的研究进展

本文综述了超声波强化超滤的作用机理，声冲流和空化作用在超声波强化超滤中起到主要作用。文章还综述了超声波强化超滤的实验方法、超声波辐射对超滤膜的影响及超声波强化清洗超滤膜等方面的研究进展。     

反渗透与超滤的应用

反渗透和超滤是近20年来发展起来的分离技术，在科学研究和工业生产中日益显示出诱人的魅力，是目前水处理方法中最先进的方法之一．我国七十年代初开始反渗透和超滤技术的研究，20年来取得了迅速的发展。因反渗透与超滤技术的应用范围很广，所以具有广阔的发展前景．1分离原理反渗透和赵滤都是化学物质的混合物与半透膜相接触，在静压梯度的作用下，某些物质透过，而其他组分基本不透过，从而实现物质分离的目的．超滤中一般不考虑渗透压，而反渗透分离的分子非常小，与推动力相比，渗透压变得十分重要而不能忽略不计。超滤和反渗透大都使…     

侧柏叶提取液超滤过程及修正凝胶极化模型

采用酶法提取、乙醇 水混合溶剂提取工艺提取侧柏叶有效成分，对提取液的超滤过程进行研究。建立了该体系超滤过程的修正凝胶化模型，对模型参数进行了关联。该模型可适用于整个超滤操作压力范围，计算值与实验值非常一致。     

一种电超滤技术

通常利用超滤技术处理电泳漆的漂洗液以完成漆的回收，溶剂透过滤膜的稳定通量要较初始的膜滤通量小得多。当在膜两侧施加适当电场时，使漆粒子背离膜方向的迁移速度增加，并能使膜面凝胶层减少或者消失，从而提高膜滤通量。本文介绍了电泳技术和超滤技术结合的试验结果和有关试验参数的函数关系。当试验压力在０．０６９～０．１３８Ｍｐａ，浓度１～１０％（Ｗ％），电场强度达５ｖ／ｃｍ时，电流漆漂洗液的膜滤通量将提高７５％。利用封闭循环超滤系统，已成功地进行了电泳漆漂洗液中漆的再生过程，从电涂槽中出来的漆液经过超滤处理，脱水浓缩液再返回涂糟，能保证漆粒子不被排案。又如Ｌｃｂｒａｓ和Ｃｈｒｉｓｔｅｎｓｏｎ用超滤将由０。５％的漂洗液浓缩至３．４％，即可直接掺到５．５％的电涂槽中。可是，超滤过程存在着严重的浓差极化问题。在超滤过程中漆位子朝膜面的对流运动速率远高于溶质粒子背离膜的扩散速率，因而导至漆粒子在膜面的富集。这种浓差极化或凝胶层的形成不仅减小了超滤流量而且将影响滤膜对不同尺寸的微小粒子的截留选择能力。电泳及超滤相结合的技术可用以破坏浓差极化现象。在附加电场的作用下，膜面上富集的粒子就会受电场力作用而离开膜面，于是膜滤通量得以提高。这?     

用于反渗透预处理的超滤——Merrilee Galloway,等．IWC-03-02

中空纤维超滤已广泛用于饮用水生产．用以滤除病原体和病毒。最近以来地表水和经生物处理的污水在进行反渗透处理前用超滤进行预处理也得到了肯定。不管入流水的水质如何，超滤都可提供较高水质和较低SDI(污泥密度指数)的产品水，因此可作为反渗透预处理的替代方案，而且超滤法占地面积小，化学药剂消耗少。它的这些优点使它成为反渗透预处理的优选方案。     

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。