乳氟禾草灵防除大豆田阔叶杂草

１９９６年２４％乳氟禾草灵乳油防除大豆田阔叶杂草。阜同、含山两地试验表明，每公顷用６００－７５０毫升乳氟禾草灵油３０天株防效在８５．６－１００％，鲜重防效为８４．７－１００％，乳氟禾草灵为大豆田理想的阔叶除草剂。     

高效液相色谱法测定15%双特乳油含量

建立了高效液相色谱法测定15％双特乳油中氟磺胺草醚和乳氟禾草灵含量的方法。方法的精密度好,相对质量偏差：氟磺胺草醚1．07％;乳氟禾草灵2．16％,方法快速、简便、准确,可作为双特乳油质量标准的一个分析方法。     

24%乳氟禾草灵EC防除大豆田阔叶杂草田间药效试验

24％乳氟禾草灵EC是连云港立本农药化工有限公司提供的除草剂。为了进一步明确其对大豆阔叶杂草的防除效果，我们进行了24％乳氟禾草灵EC防除大豆田阔叶杂草的田间药效试验。     

乳氟禾草灵的正相液相色谱分析

采用高效液相色谱法，使用硅胶柱和紫外检测器，用外标法对乳氟禾草灵进行定量分析。方法标准偏差为0．310％，变异系数为0．407％，回收率为98．6％-100％。     

乳氟禾草灵的化学合成

本文介绍了除草剂乳氟禾草灵的实验室合成方法。合成总收率大于６０％，原药含量达到８０％。     

紫花苜蓿茎叶处理除草剂混配试验

通过5％咪唑乙烟酸AS与6．9％精噁唑禾草灵EW、15％精吡氟禾草灵EC混用,研究其在紫花苜蓿茎叶除草中的作用效果。结果表明：5％咪唑乙烟酸AS单独使用对杂草的防效优于与其它药剂混配;5％咪唑乙烟酸AS与6．9％精噁唑禾草灵EW或15％精吡氟禾草灵EC混配产生拮抗作用,降低防效;5％咪唑乙烟酸AS单用可使紫花苜蓿增产49．56％。     

乳氟禾草灵的分析方法

本文研究了用液相色谱法测定乳氟禾草灵的方法。采用Hypersil C18键合相色谱柱,三元流动相分离,紫外检测器检测。变异系数为0．74,回收率为98．9％。方法简便,准确。     

精吡氟禾草灵含量的高效液谱测定—CIPAC方法

试样在含有内标物联苯酰的混合溶剂中，于一手性柱上以２，２，４－三甲基戊烷－异丙醇－三氟醋酸为流动相，使用紫外检测器，对精吡氟禾草灵进行了高效液相色谱分离，精吡氟禾草灵含量通过用标准溶液比较，用外标法求得。     

高特克与防除禾本科杂草除草剂桶混对药效的影响

高特克是用于油菜田的选择性苗后除草剂，对猪殃殃等阔叶杂草有较好的防除效果，但对禾本科杂草防效差，为了探求高特克与防除禾本科杂草除草剂桶混的可能性，安排了本试验。１　材料与方法１．１　试验药剂５０％高特克（草除灵）悬浮剂，６－９％威霸（嚙唑禾草灵）浓乳剂，８－０５％威霸乳油均为德国艾格福公司产品；１０－８％高效盖草能（吡氟乙禾灵）乳油，美国陶氏益农公司产；１５％精稳杀得（吡氟禾草灵）乳油，日本石原产业株式会社产；５％精禾草克（喹禾灵）乳油，日本日产化学工业株式会社产；２５％胺苯磺隆可湿性粉剂，沈阳…     

高恶唑禾灵和氟黄胺草醚防除大豆田杂草

试验结果表明５０毫长／６６７米＾２氟黄胺草醚能有效地控制大豆田茼麻和青葙子。４０－５０毫升／６６７米＾２高恶唑禾灵防除大豆田野称和芒稷可达满意效果；乳氟禾草灵不宜与高恶唑禾灵混 用，否则会诚效增毒。     

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。