20%哒螨灵·三氯杀螨砜可湿性粉剂防治苹果叶螨田间试验

20 %哒螨灵·三氯杀螨砜可湿性粉剂对苹果叶螨有良好的防治效果 ,以 10 0 0～ 15 0 0倍稀释液喷施 ,防效在 85 %以上 ,是防治苹果叶螨的优良药剂。     

30％乙唑螨腈·螺螨酯悬浮剂对不同害螨的药效试验

[目的]测定30％乙唑螨腈·螺螨酯悬浮剂对不同害蟥的田间防治效果.[方法]参照农药田间药效试验准则进行试验.[结果]30％乙唑螨腈悬浮剂能有效防治柑橘全爪螨、苹果全爪螨、锈壁虱、蔬菜朱砂叶螨及二斑叶螨.在50～100 mg/L质量浓度下,30％乙唑螨腈·螺螨酯悬浮剂表现出较好的速效性,药后1、3 d,防治效果达到84....     

杀螨隆防治苹果树害螨药效试验

试验结果表明,５０％杀螨隆（室路）ｗｐ对苹果对山楂叶螨和李始叶螨均有较好防效,适宜浓度２０００￣２５００倍液,特效期达２１天以上。     

螺螨酯类似物AC-101的合成与杀螨活性

为寻求高活性的杀螨剂,通过对螺螨酯进行结构改造,合成了新杀螨活性化合物3-(2,4-二氯苯基)-2-氧-1-氧杂螺[4.5]癸-3-烯-4-基-丁基-1-磺酸酯(试验代号:AC-101;暂命名:螺螨丁酯),并开发了24%悬浮剂(SC)和24%可分散油悬浮剂(OD)制剂。室内生物活性测试显示:在1 mg/L质量浓度下,螺螨丁酯对朱砂叶螨螨卵的防效达95%。田间药效试验显示:24%螺螨丁酯SC和OD药后14 d对山楂叶螨的最高防效分别为95.7%和96.2%,药后21 d对山楂叶螨的防效在73.6%以上。螺螨丁酯具有杀螨活性高、速效性好和持效期长的特点,有一定的应用开发价值。     

噻螨酮等新农药防治叶螨试验应用技术研究

作者于１９９１￣１９９４年进行２５种农药防治果树叶螨田间药效试验。结果表明，５％噻螨酮乳油、２０％哒螨灵可湿性粉剂、５％唑螨酯悬浮剂防治果树叶螨幼、若、成螨效果均在９３．５％以上，５％噻螨酮乳油防治卵效果为９２．９％。三种农药对果树叶螨的防治效果都优于对照药剂。     

15%甲氰菊酯—哒螨酮乳油防治山楂叶螨药效试验

１５％甲氰菊酯－哒螨酮乳油是化工部农药剂型中心亲近研制出的复配杀虫剂,通过对危害李树的山楂叶螨田间药效试验,结果表明１５％甲氰菊酯－哒螨酮乳油防治山楂叶螨效果较好,使用浓度２０００倍液的防治效果等对照药剂２０％甲氰菊酯乳油,优于１５％哒螨酮乳油;使用浓度２５００倍液的防治效果略低于对照药剂２０％甲氰菊酯乳油,等于１５％哒螨酮乳油。     

15%哒螨灵乳油防治苹果害螨效果研究

１９９３年于室内、田间进行了螨灵防治苹果两种主要害螨效果研究，结果表明哒螨灵对山楂叶螨和苹果叶螨的成螨、幼若螨及卵无效样伤力强，５０ｐｐｍ防治效果达９９％以上，具有速性和持效期长等特点，适于在害螨大发生期使用，田间控制效果在一个月以上。对苹果树安全无药害。     

20%三氯杀螨醇—哒螨酮乳油防治山楂叶螨田间药效试验

２０％三氯杀螨醇－哒螨酮乳油是化工部农药剂型中心新近研制出的复配杀螨剂，通过对危害李树的山楂叶螨田间药效试验，结果表明防治效果较好。使用浓度１０００倍和１５００倍液的防治效果等于对照药剂２０％三氯杀螨醇乳油，使用浓度２０００倍液的防治效果略低于对照药剂２０％三氯杀螨醇乳油，但均优于１５％哒螨酮乳油，值得推广应用。推荐田间使用浓度为１５００－２０００倍。     

三唑锡防治害螨药效评价

三唑锡是南开大学元素所和山东招远三联化工厂共同研制的有机锡类杀螨剂,经室内毒力测定和1989～1990连续两年的田间防治试验表明,20%三唑锡胶悬剂对棉红蜘蛛、山楂红蜘蛛、苹果全爪螨、柑桔全爪螨、柑桔锈壁虱等害螨均有很好防效。其速效和持效显著优于三氯杀螨醇。     

常见的螨类害虫防治方法

常见的螨类害虫有粉虱、红蜘蛛,属于节肢动物门、蛛形纲、蜱螨目。螨通常为圆形或卵圆形的小形或微形种类,与昆虫的主要区别是无触角,无翅,无复眼。分别有山楂叶螨、 苹果全爪螨、二斑叶螨,细须螨科的柿细须螨、葡萄短须螨,瘿螨科的梨锈瘿螨,     

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.     

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。     

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.