无伸缩型降液板的改进

对板式塔中的降液板进行了改进，将无伸缩型改为伸缩型，避免了漏液，提高了常压塔的分离效果。     

桥梁伸缩装置损害分析及整改

桥梁伸缩装置是为了保证桥跨结构在气温变化、荷载作用下混凝土收缩与徐变等影响下的自由变形，而在桥面上设置的两梁端之间的装置，它不但要保证梁体能够自由变形，而且要使车辆能顺畅地通过，并防止雨水渗漏和垃圾泥土等的阻塞，其部件除要求有足够的强度外，还应与桥面部分连接牢固。以沪杭甬高速公路杭州段为例，该路段共有桥梁橡胶伸缩装置１８７条，其中有CD型板式橡胶伸缩装置，有德国产的毛勒伸缩装置，大部分是BF型板式橡胶伸缩装置，为４０mm、６０mm和１２０mm三种。通车两年来除了４条毛勒伸缩装置和４条BF１２０型橡胶伸缩…     

液压控制系统在胶囊反包成型机上的应用

LC-G25sd胶囊反包成型机的正、反包和扩导装置应用液压控制系统控制。液压控制系统由主系统液压站和右扣圈胶囊液压站组成。主系统液压站控制扩布器张折、伸缩、伸缩定位及旋转定位、、左扣圈伸缩及左胶囊伸缩；右扣圈胶囊液压站控制右扣圈伸缩及右胶囊伸缩。采用液压系统保证了胶囊正反包的质量，运行平衡可靠，克服了气压控制系统冲击大、力量小和运行不平稳等缺点。     

衡水宝力工程橡胶有限公司研制开发新型桥梁伸缩装置

衡水宝力工程橡胶有限公司研制开发新型桥梁伸缩装置河北省衡水宝力工程橡胶有限公司（原衡水市第一工程橡胶厂）与交通部公路规划设计院合作，最近研制开发出ＧＱＦ－ＭＺＬ、ＧＱＦ－Ｃ型桥梁伸缩装置，并通过了专家评议。专家们一致认为：ＧＱＦ－ＭＺＬ、ＧＱＦ－Ｃ型...     

海泡石纳米阻燃纤维及其制备方法和用其增强增韧的阻燃复合材料

本发明海泡石纳米阻燃纤维的直径为10～60nm，其中海泡石纳米纤维与双螺环基膨胀型阻燃聚合物的质量分数比为1：0．1～0．5，且其红外光谱图900～1000cm^-1之间的Si-O伸缩振动峰明显增强，1000～1100cm^—1的之间的Si-O-Si伸缩振动峰明显变弱。本发明还公开了制备上述海泡石纳米阻燃纤维的方法和用其增强增韧的阻燃复合材料。     

微晶纤维素的FTIR研究

研究了两种不同晶型的微晶纤维素的傅立叶变换红外光谱及广角X-射线衍射谱。发现了纤维素Ⅰ型和纤维Ⅱ型的微晶纤维素的红外光谱在OH伸缩振动区均分裂为两个峰，并且它们的红外光谱的区别在于分子链堆砌的不同。     

磁致伸缩液位计故障分析

简介ＫＭ２６型磁致伸缩液位计的原理、结构、主要技术参数，对应用中产生的故障进行分析并给出解决办法。     

结构紧凑的伸缩节

干法窑一级旋风到收尘室的人烟道，由于温度变化大，必须安装伸缩节以补偿大烟道的热胀冷缩，且由于这里负压较大，对伸缩节的密封要求高c在安装空间狭小的情况下，伸缩节的结构设计更是一个值得注意的问题笔者设计了一个伸缩节，如图示：抱箍为两个半圆环，用两个螺栓夹紧在内     

不同类型层状硅酸盐宝玉石矿物的近红外光谱研究

目前宝石红外光谱的研究主要集中在中红外波段,对近红外区间的研究相对较少.以层状硅酸盐宝玉石矿物为研究对象,测试分析了该类宝玉石矿物的近红外光谱特征,得出以下结果:1:1型矿物Si-O基团伸缩振动倍频峰主要位于4600 cm-1附近;2:1型矿物Si-O基团伸缩振动倍频峰主要位于4500 cm-1附近;而2:1:1型矿物由于Si-O基团与[OH]基团合频振动,峰值主要位于4400 cm-1附近.高岭石、蛇纹石、滑石、叶腊石、绿泥石、葡萄石中H2 O弯曲和伸缩振动组合频位于5150 cm-1附近.此类合频峰在层状硅酸盐宝玉石矿物的三种类型中均存在.羟基O-H伸缩振动的倍频位于滑石7223 cm-1、叶蜡石7201 cm-1处,这里主要存在于2:1型的矿物中.     

延长水泥散装伸缩头钢丝绳使用寿命的措施

散装伸缩头处钢丝绳是散装水泥的重要组成部分，也是易损件之一。针对影响散装伸缩头钢丝绳的使用寿命因素进行了分析，根据企业散装及包装特性，以及散装构造、工艺场地的布局，对卷扬机重新布置，改善了钢丝绳的工作状态，提高了水泥散装伸缩头钢丝绳的使用寿命。     

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.