60%滴

60%滴·嗪·乙乳油(2,4滴丁酯+嗪草酮+乙草胺)为大豆田苗前土壤封闭除草剂.试验结果表明于大豆播后苗前使用60%滴·嗪·乙乳油1800～2250 g a.i./hm2,防效达90%以上.对大豆安全,不影响后作.     

50%乙·嗪乳油防除玉米田杂草效果初报

５０％乙·嗪乳油（乙草胺和嗪草酮）是一次性玉米田除草剂。试验结果表明，５０％乙·嗪孔油在玉米播后苗前施用，２００￣２５０ｍｌ／６６７ｍ＾２，除草效果达９０％以上，对玉米安全。     

40%乙·二·扑乳油的气相色谱分析

4 0 %乙·二·扑乳油是以乙草胺、2 ,4 -滴丁酯和扑草净为有效成分复配加工而成的新型除草制剂。本文提出了测定其有效成分的气相色谱分析方法。此法快速、准确 ,为控制乙·二·扑乳油的产品质量提供了准确的分析数据     

克·福·唑种衣剂的气相色谱分析

采用气相色谱法 ,选用SE - 30石英毛细管柱 ,以邻苯二甲酸二丁酯为内标物 ,测量种衣剂中克百威、三唑酮的含量。方法的标准偏差为克百威 0 .43,三唑酮 0 .5 1,变异系数克百威为 0 .82 9% ,三唑酮为 0 .6 2 3% ,克百威的回收率为 99.0 2 %～ 10 0 .32 % ,三唑酮的回收率为 99.30 %～10 0 .2 4%。该方法具有快速、准确的特点。可以作为克·福·唑种衣剂生产控制分析方法。     

60%滴·嗪·乙乳油的高效液相色谱分析

建立了一种60％滴·嗪·乙乳油的高效液相色谱分析方法。采用Hypersil ODS2(200mm×4.6mm,5μm)色谱柱;以甲醇+水+冰乙酸=70+30+0.5(体积比)为流动相;流速1.0ml／min;检测波长236nm。2,4-滴丁酯、嗪草酮、乙草胺的变异系数分别为0.70％、1.49％、0.64％,平均回收率分别为98.92％、98.88％、99.03％,标准偏差小于0.24。     

40%乙·果乳油防除花生田杂草试验

４０％乙·果乳油对花生田杂草具有很好的防治效果。在花生播种后用药６０ｍｌ／６６７ｍ２进行土壤表面喷雾处理,施药后４５天对花生田一年生单、双子叶杂草的防效在９５％以上,一次用药,可控制花生整个苗期的杂草。     

48%乙·氯嘧磺隆乳油防除大豆田杂草试验

48％乙·氯嘧磺隆乳油（商品名豆田灵）是由氯嘧磺隆和乙草胺混配而成。使用该药剂20～25g／hm2在大豆播后苗前叶水土壤封闭处理,对大豆田多种杂草防效稳定在92％以上,持效期3O～40天,对大豆安全,比人工除草二次每hm2增产大豆225kg。     

新二氯·苄应用研究

1998年在河北省秦皇岛市进行了新二氯·苄和二氯·苄田间比较试验。新二氯·苄和二氯·苄对稗草的防效基本一致 ,对阔叶杂草的防效 ,新二氯·苄好于二氯·苄 ;如在 40g/ 6 6 7m2 的剂量下 ,新二氯·苄对稗草、鸭舌草、眼子菜、狼把草的防效分别为 90 .5 %、98.1%、95 .8%、10 0 % ,而二氯·苄的防效为 92 .4%、93.5 %、92 .5 %、93.6 %     

苏·阿防治花椰菜小菜蛾的效果

比较了苏·阿、Ｂ．ｔ．和虫螨克防治花椰菜小菜蛾的效果。药后１天,２％苏·阿可湿性粉 剂１００ｇ／６６７ｍ２的防效为９８．３％,高于Ｂ．ｔ．可湿性粉剂（１６０００ＩＵ／ｍｇ）５０ｇ／６６７ｍ２９５．９％的防效, 也高于０．９ ％虫螨克乳油 ５０ｍｌ／６６７ｍ２９５．４ ％的防效。药后１周,苏·阿的防效仍达 ９４．７７％,明显 高于Ｂ．ｔ．可湿性粉剂（１６０００ＩＵ／ｍｇ）５０ｇ／６６７ｍ２和０．９％虫螨克乳油５０ｍｌ／６６７ｍ２的防效。     

辛·氯乳油中辛硫磷含量的高效液相色谱分析

采用高效液相色谱法分析杀虫剂辛·氯乳油中辛硫磷的含量,辛硫磷平均回收率为99．3％,标准偏差为0.14％,变异系数0．6％。     

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。