新型大环化合物的合成及应用研究的新进展

简要介绍了大环化学的产生发展及应用。重点综述了:(1)新型大环多胺的合成及应用;(2)新型希夫碱化合物的合成及应用;(3)新型杯芳烃和新型环糊精衍生物的合成及应用。并对大环化学的发展进行了展望。     

新型杯芳烃的合成及其应用研究的新进展

简要介绍了杯芳烃化学的产生、发展、结构特征及应用。详细介绍了新型杯芳烃衍生物的合成及应用;新型硫杂杯芳烃的合成及荧光探针;新型杯芳烃的合成及在分析分离科学中的应用。并对杯芳烃化学的发展进行了展望。     

新型杯芳烃的合成及其应用研究的新进展

简要介绍了杯芳烃化学的产生、发展、结构特征及应用。详细介绍了新型杯芳烃衍生物的合成及应用;新型硫杂杯芳烃的合成及荧光探针;新型杯芳烃的合成及在分析分离科学中的应用。并对杯芳烃化学的发展进行了展望。     

蓬勃发展的杯芳烃化学

简要介绍了杯芳烃的结构特征、产生、发展及应用,详细介绍了:①新型杯芳烃的点击合成及应用;②多种系列新型杯芳烃的合成及应用;③新型杯芳烃的合成及其对金属离子的选择性络合作用。并对杯芳烃的发展进行了展望。     

新型柱芳烃的合成自组装及应用研究的新发展

简要介绍了柱芳烃的产生发展应用及结构特征。详细介绍了:(1)新型柱芳烃的合成及应用;(2)新型柱芳烃的合成及在分析分离科学和材料科学中的应用;(3)新型柱芳烃的合成自组装及应用。并对柱芳烃的发展进行了展望。     

植根深远的杯芳烃化学

简要介绍了杯芳烃化学的产生、发展、杯芳烃的结构特征及应用。详细综述了新型杯芳烃的合成及应用、新型两亲性杯芳烃的合成及在材料科学中的应用、新型杯芳烃的合成及对阳离子的选择性识别与检测。并对杯芳烃化学的发展进行了展望。     

植根深远的杯芳烃化学

简要介绍了杯芳烃化学的产生、发展、杯芳烃的结构特征及应用。详细综述了新型杯芳烃的合成及应用、新型两亲性杯芳烃的合成及在材料科学中的应用、新型杯芳烃的合成及对阳离子的选择性识别与检测。并对杯芳烃化学的发展进行了展望。     

新型杯芳烃化合物的合成自组装键合及应用

简要介绍了杯芳烃的结构特点及应用,详细综述了:①杯芳烃衍生物的合成组装键合及应用;②新型杯芳烃的合成及络合作用;③新型杯芳烃的合成及在医药学方面的应用。     

植根深远的柱芳烃化学

简要介绍了柱芳烃的产生、发展、性能、应用及结构特征。详细综述了:(1)新型手性柱芳烃的合成及应用;(2)新型阴离子柱芳烃的合成及应用;(3)新型柱芳烃的合成及在医药学和智能光学材料中的应用,并对柱芳烃的发展进行了展望。     

新型第三代超分子大环主体化合物杯芳烃的合成及应用

简要介绍了杯芳烃的结构、性能及应用;重点介绍了:1新型杯芳烃的合成及应用研究;2新型杯芳烃的自组装及选择性识别作用;3新型杯芳烃对金属离子的选择性识别研究。并对杯芳烃化学的发展进行了展望。     

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.