Fe_2O_3－SrO－TeO_2系半导体玻璃电导的研究

用准急压冷法制成Ｆｅ_２Ｏ_３－ＳｒＯ－ＴｅＯ_２系半导体玻璃并对其直流电导率进行了测定。玻璃形成范围为（以摩尔计）；０≤Ｆｅ_２Ｏ_３≤２３％；０≤ＳｒＯ≤１８％；７５％≤ＴｅＯ_２＜１００％。通过Ｓｅｅｂｅｃｋ系数的测定确认Ｆｅ_２Ｏ_３－ＳｒＯ－ＴｅＯ_２系玻璃为ｎ型半导体玻璃。２００℃的直流电导率为３．７２×１０￣（－５）～１．８２×１０￣（－６）Ｓ·ｃｍ￣（－１）。直流电导率随着Ｆｅ_２Ｏ_３含量的增加而增加，１６５℃时的载流子迁移率和浓度分别为１．１２×１０￣（－９）～３．６７×１０￣－７ｃｍ￣２·Ｖ￣（－１）·Ｓ￣（－１）和２．１７×１０￣（２１）～８．３３×１０￣１９ｃｍ￣（－３）．讨论的结果表明Ｆｅ_２Ｏ_３－ＳｒＯ－ＴｅＯ_２系玻璃的电导机理符合小极化子跳越理论。     

一次低烧SrTiO3基晶界层电容器的研究

研究了以Ｌｉ２ＣＯ３为助烧结剂、Ｓｒ（Ｌｉ１／４Ｎｂ３／４）Ｏ３为施主掺杂剂、Ｂｉ２Ｏ３和ＳｉＯ２为晶界绝缘剂的ＳｒＴｉＯ３基晶界层电容器的一次低温烧成技术。初步探索了Ｔｉ／Ｓｒ比值、施主掺杂剂、绝缘剂对显微结构及介电性能的影响。在１１５０℃烧成温度下，获得了εａｐｐ〉３．５×１０＾４；ｐ〉１．０×１０＾１１Ω·ｃｍ；ｔｇδ〈１．０％；ΔＣ／Ｃ〈±５．０％（－２５￣＋８５℃）的ＳｒＴｉＯ３基晶界层     

耐磨Ni－SiC复合电镀及其应用

含ＳｉＣ最高达１１％的Ｎｉ－ＳｉＣ复合镀层的镀液配方及操作条件为：Ｎｉ（ＳＯ_３．ＮＨ_２）_２·４Ｈ_２Ｏ４１０，ＮｉＣｌ_２·６Ｈ_２Ｏ１０，Ｈ_３ＢＯ_３５０，ＯＰ－１００．４及ＳｉＣ（３μｍ）２０－１２０ｇ／Ｌ，ｐＨ４，５５±２℃，５Ａ／ｄｍ￣２，需搅拌．     

新发光试剂N-(β-羧基丙酰基)异鲁米诺的合成及性能的研究

合成了新发光试剂Ｎ－（β－羧基丙酰基）异鲁米诺（ＣＰＩＬ），并对其化学发光性能进行了研究。ＣＰＩＬ在ＮａＨＣＯ３－ＮａＯＨ介质中与Ｈ２Ｏ２反应，线性范围为２×１０－１０～１×１０－８ｍｏｌ／ＬＣＰＩＬ，检测限为１×１０－１０ｍｏｌ／Ｌ，测定１×１０－９ｍｏｌ／Ｌ　ＣＰＩＬ溶液，相对标准偏差为６．４％。Ｃｏ２＋对ＣＰＩＬ的化学发光反应具有催化增强作用（增强１０倍），当体系中加入一定量的Ｃｏ２＋溶液时，ＣＰＩＬ的浓度在４×１０－１１～１×１０－９ｍｏｌ／Ｌ从范围内具有良好的线性关系，检测限为８×１０－１２ｍｏｌ／Ｌ，灵敏度高于文献报道的ＡＢＥＩ－Ｃｏ２－ＮａＣＩＯ发光体系。     

新试剂BTPAPT的合成及其分析性能

报道新试剂１－（２－苯并噻唑）－３－（４－偶氮苯基）－三氮烯（简称ＢＴＰＡＰＴ）的合成、性能及与镉，汞、银、锌在表面活性剂存在下的显色反应。研究结果表明，该试剂与镉、汞、银、锌的显色反应灵敏，其摩尔吸光系数分别为：１．４０×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）、１．２３×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）、３．６０×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）和１．１０×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。     

铜（Ⅱ）,N,N‘—双（3,5—二溴水杨醛缩）邻苯二胺配合物吸附波及其应用

在０．０１ｍｏｌ／ＬＮＨ３，Ｈ２Ｏ－ＮＨ４Ｃｌ溶液中，铜（Ⅱ）－Ｎ，Ｎ’－双（３，５－二溴水杨醛缩）邻苯二胺（Ｄｂｓａｌ－ｏ－ＰｈｄｎＨ２）配合物产生灵敏的吸附波，波的峰电位是－０．３８Ｖ（ｖｓ·ＳＣＥ），峰电流与铜（）的浓度在２．０×１０－８－８．０×１０－７ｍｏｌ／Ｌ范围内成正比，检测限是６×１０－９ｍｏｌ／Ｌ，本方法用于检测水中的铜，回收率为９７．５％～１０３％。     

中温烧结BaO－PbO－Bi_2O_3－Nd_2O_3－TiO_2系统陶瓷的组

研究了ＢａＯ－ＰｂＯ－Ｂｉ＿２Ｏ＿３－Ｎｄ＿２Ｏ＿３－ＴｉＯ＿２五元系统各成分对系统介电性能的影响。调整各组分及玻璃的含量，获得中温（１１４０℃）烧结的热稳定独石电容器瓷料（ＮＰＯＭＬＣ），其介电系数ε＝９０±５，损耗ｔｇδ≤３×１０￣（－４），绝缘电阻率ρ＿ｖ≥１０￣（１２）Ω·ｃｍ，介电系数的温度系数α＿ε＝０±１５×１０￣（－６）／℃。     

芦竹碱PVC膜电极的研究

本文研制出以芦竹碱－四苯硼钠为电活性物的ＰＶＣ膜电极。在ｐＨ２．０～７．０水浴液中，电极的残性响应范围、平均斜率和检出下限分别为６．３×１０￣５～１．０×１０￣（－２）ｍｏｌ／Ｌ、５７ｍＶ／△ＰＣ和２．２×１０￣（－５）ｍｏｌ／Ｌ．电极响应速度快，稳定性好，可用于快速测定植物中芦竹碱的含量，方法准确可靠。     

丁硫克百威在柑桔上的残留分析

本文论述了丁硫克百威在柑桔上的气相色谱分析。本体丁基卡巴呋喃选用２％ＯＶ－１７为固定液的填充柱，降解产物卡巴呋喃，３－羟基卡巴呋喃选用２％ＯＶ－２２５为固定液的填柱，且３－羟基巴喃呋乙氧基化转变３－乙氧基卡巴呋喃。其最低检出量丁基卡巴呋喃２．０×１０＾１１克，卡巴呋喃和３－羟基卡巴呋喃１．０×１０＾－１１克。     

测定亚硝胺的电位型霉变玉米胚组织传感器研究

利用霉变玉米胚组织研制了对二甲基亚硝胺（ＤＭＮＡ）、二乙基亚硝胺（ＤＥ－ＮＡ）和甲基苄基亚硝胺（ＭＢＮＡ）等选择性响应的新型组织传感器。该传感器灵敏度高,重现性好,选择性好,其线性范围２．０×１０－６～２．０×１０－３ｍｏｌ·Ｌ－１,检测下限１．３×１０－７ｍｏｌ·Ｌ－１,斜率为５９．２（３０°Ｃ,ｐＨ７．５）。     

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。