酯交换蓖麻油的磷酸酯合成

研究了蓖麻油的乙酯化及酯交换蓖麻油的磷酸酯合成，当酯交换度在３０￣５０％，油／磷＝１：０．７５￣１：１．２５，五化二磷／磷酸＝１：０．５￣１：１．２，反应时间２．５ｈ￣３．５ｈ，温度为７０℃，所得酯交换蓖麻油的磷酸酯中的单酯为６０％，双酯３０％左右，磷酸为６％左右。     

人体皮肤洗脱液中氟嗪酸的HPLC法研究

建立了高效液相色谱测定人体皮肤洗脱液中氟嗪酸含量的方法,色谱体系流动相：柠檬酸（０．０５ｍｏｌ／Ｌ）－醋酸铵（０．５ｍｏｌ／Ｌ）－乙腈－１％磷酸水溶液（７５：１：２６：２．Ｖ／Ｖ）,工作曲线性范围０．５μｍＬ￣１６μｍ／Ｌ,相关系数０．９９９４,方法最低检测浓度为０．４μｇ／ｍＬ（Ｓ／Ｎ＝３）,该法回收率高（９７．３０％￣１０２．５％）,重现性好（ＲＳＤ〈３．２％）,可不经分离直接用于测定人体皮肤     

油井酸化作业用缓蚀剂配方

９４－０１２油井酸化作业用缓蚀剂配方题述缓蚀剂配方包括取代酮胺络合物３０％～４０％，炔醇５％～２５％，Ｃ＿（１－８）醇１０％～２０％，松香酸１％～１０％，非离子表面活性剂５％～２０％，锑化物０．０００７～０．０４摩尔比（溶液／酸液）。测得钢的腐蚀速度...     

信息荟萃

·项目推荐台·钙铁吸收促进剂－酪蛋白磷酸肽一、成果简介酪蛋白磷酸肽（CPP）是由牛奶酪蛋白经蛋白酶水解产生的一种富含磷酸丝氨酸的生理活性物质，对矿物质离子具有亲和性，可防止矿物离子在肠道内产生不溶性沉淀，促进人体对钙、铁等矿物质的吸收利用。其制备技术关键是蛋白质酶水解和CPP分离提纯工艺技术。二、技术经济指标产品外观：乳白或蛋黄色粉末水份含量：≤１０％CPP含量：≥８５％重金属含量：≤５mg／kg砷含量：≤０．５mg／kg细菌总数：≤３０００个／g大肠菌群：３０个／１００g三、技术成熟程度、水平及产业化所需条…     

10％果满红SC防治山楂叶螨药效试验

试验结果表明：１０％果螨红对山楂叶螨有很好的防治效果,其防治效果药后１天和５天均在９６．５％以上,速效性好于２０％螨死净,药后３０～４０天均在９４．１％以上,持效性好于哒螨灵,是目前较好的杀螨剂。     

最新专利

最新专利松香香皂配方波兰专利，ＰＬ１６０，７３５［专，波］／ＳｚｃｚｅｐａｎｓｋａＨ…．－１９９３．２．３０．－５ｐ；Ｃ１１Ｄ１０／０４香皂配方：动物脂肪（牛油）钠皂２０～６０％、猪油钠（粗）皂２２～３０％、固化猪油钠皂５～１８％、椰油钠皂或棕桐油钠...     

高效液相色谱法测定硝氮黄

用高效液相色谱法对硝氮黄进行了分析测定，选择μＢｏｎｄａｐａｋ Ｃ１８色谱柱，甲醇：水：ＩＰＲ－Ｂ７（３０：７０：２．５，体积比０作流动相，ＵＶ－２５４ｎｍ检测等色谱条件，使硝氮是到了较好地分离，定量测定的回睡率为９８．７２％，变异系 ２．２１％。本方法快速，简便，灵敏度高，重现性较好。     

金秋防除麦田杂草试验

进行了金秋防除麦田杂草的试验。结果表明：麦苗２．１叶期使用１０％金 湿性粉剂１０、２０、３０ｇ／６６７ｍ＾２,施药后４０天对猪殃殃的株防效为８１．３％－９０．５％,总株防效为６７．４％－８．３％;施药后１４０天,对猪殃殃的株防效为８６．７％－９０．８％,总株防效为６４．０％－６９．５％,     

制备低硫高倍膨胀石墨的正交法研究

首次用硝酸（６５％）、乙酸酐和硫酸（９８％）的混合液与天然鳞片石墨反应制备低硫高倍膨胀石墨。通过正交实验和分析,筛选出最佳制备条件：石墨、硝酸（６５％）、乙酸酐（９７％）、硫酸（９８％）的重量比为１：１．４：１．５：１．５,反应时间为３０ｍｉｎ,反应温度为２５℃。膨胀石墨的含硫量６００ｐｐｍ,膨胀倍数在１９０以上。     

高掺量粉煤灰压制烧结砖中间试验

对高掺量粉煤灰烧结砖的原材料，配比，成型压力，成型密度和烧成温度对砖强度的影响进行了分析研究；并对砖坯泥料在不同压砖机上进行了多次压砖实验。表明：粉煤灰与黄土的比例如７０％～８０％：３０％～２０％为宜，且７０：３０时最佳，所用粉煤灰的粒度＜０．５ｍｍ、含量应＞９０％。对高掺量粉煤灰烧结砖来说，太原产ＹＺ４２５型杠杆式压砖机目前比较适合；砖坯成型后的单位重为２．５～２．６ｋｇ／块，（密度１．７１～１．８ｇ／ｃｍ３）在适当的温度下烧成能得到符合要求的产品。     

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。