我国氯丁橡胶发展现状及展望

氯丁橡胶是最先实现工业化生产的合成弹性体。本文综述了氯丁橡胶的发展现状及发展展望,着重论述了氯丁橡胶的生产发展现状、市场发展现状和技术发展现状,展望了氯丁橡胶未来的发展,并提出发展建议。     

新形势下煤炭行业发展现代煤化工的思路

介绍了煤炭行业煤化工的发展现状;对发展煤化工面临的主要问题进行了评述;分析了现代煤化工的产业定位、主要发展方向、主要发展任务;提出了现代煤化工的发展与产业规划布局思路;并指出了发展现代煤化工需要的政策支持与保障。     

我国异氰酸酯行业现状及发展机会分析

分析了我国异氰酸酯行业发展现状和发展问题,提出了未来行业的发展机会和发展方向,并对我国异氰酸酯行业高质量发展提出了展望.     

工程塑料行业形势发展分析

介绍了政府部门对行业发展的指导意见,并概述了国内工程塑料行业发展、市场发展、技术发展及企业发展.     

新形势下南平市王台镇发展状况和发展方向剖析

南平市王台镇属于福建的一部分,其在社会的发展过程中取得了一定的发展成绩。但是与此同时,也存在很多发展中的问题。而本文对王台镇发展的性质、发展中的问题做出了分析,在此基础上得出了其发展前景,提出了对应的发展经验。     

发展我省石油化工的思考

本文纵观了世界石油化工发展过程,分析了国内外发展现状和我省发展石油化工的基本条件,提出了我省发展的对策和建议。     

把握新时代中国期刊发展战略机遇

本文阐述了新时代期刊发展的状况和前景。探究了新时代期刊高速发展的原因、意义、以及期刊高速发展对现代社会的影响,着重讲述了对于传统期刊的冲击与影响。阐述了新时代发展与期刊发展相辅相成的关系,并且提出在新时代我国期刊发展所面临的挑战和解决办法,从我国期刊发展的形式、职权的建设出发,对现阶段期刊发展作出分析,涵盖了各平台的建设、期刊功能,交流媒介等,并给出了发展建议,以期在新时代推动我国期刊的蓬勃发展。     

中国加油站非油品业务发展策略研究

介绍了国内外加油站非油品业务的发展历程,分析了中国国有石油公司发展加油站非油品业务的必要性、优势和发展空间,提出了加油站非油品业务的发展定位和发展策略。     

中国牙膏工业的昨天、今天与明天(一)(待续) ——我国牙膏工业发展历程回顾及发展前景展望

对中国牙膏工业发展的历程进行了回顾.分析了中国牙膏工业的现状,提出了我国牙膏工业发展的思路、发展方针及发展重点.指出了我国牙膏工业未来发展的目标、应采取的措施及几点建议.     

国内外香料香精工业概况与市场分析

论述了国际香料香精工业发展的现状及趋势。分析并阐明了国际香料香精工业发展的特点。对我国香料香精市场发展的新态势和特点进行了分析，提出了我国目前香料香精工业发展的主要措施与政策建议。论述了我国香料香精工业的生产和市场发展，并对我国香料香精工业发展的前景进行了展望。     

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.     

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。