理化因子对嗜盐隐杆藻细胞生长及胞外多糖产量的影响

比较不同ＮａＣｌ、Ｃａ２＋、ＰＯ３－４等离子浓度对嗜盐隐杆藻（Ａｐｈａｎｏｔｈｅｃｅｈａｌｏｐｈｙｔｉｃａ）细胞生长及胞外多糖（Ｅｘｏｐｏｌｙｓａｃ－ｃｈａｒｉｄｅＥＰＳ）产量的影响。在各影响因子不同浓度的培养条件下,０．５ｍｏｌ／Ｌ的ＮａＣｌ、１．０ｇ／Ｌ的Ｃａ（ＮＯ３）２·４Ｈ２Ｏ、０．１ｇ／Ｌ的ＫＨ２ＰＯ４分别是其最佳生长浓度。ＥＰＳ的产量在０．５ｍｏｌ／ＬＮａＣｌ、,０．５ｇ／ＬＣａ（ＮＯ３）２·４Ｈ２Ｏ、０．５ｇ／Ｌ的ＫＨ２ＰＯ４培养条件下最高。在较低的Ｃａ２＋、Ｍｇ２＋、ＰＯ３－４浓度下可提高ＥＰＳ产率。     

镍铁合金镀液故障处理

镍铁合金镀液故障处理郭绍湘（山东红旗机械厂，２６１０３１）１简介双层镍铁合金／装饰铬生产线，Ｎｉ－Ｆｅ槽液成份及工艺规范如下：ＮｉＳＯ４·７Ｈ２Ｏ３００～３５０ｇ／Ｌ，Ｈ３ＢＯ３４０～４５ｇ／Ｌ，ＮａＣｌ１５～１８ｇ／Ｌ，Ｆｅ总１～２．５ｇ／Ｌ，Ｎａ...     

电沉积光亮锡锌合金的研究

推荐了一种电沉淀光亮锡锌合金新工艺。其溶液组成及操作条件：Ｎａ３Ｃ６Ｈ５Ｏ７．２Ｈ２Ｏ８０～１００，ＮＨ４ＡＣ４５～５５，ＥＤＴＡ２５～３５，ＳｎＣｌ２．２Ｈ４Ｏ４～５０，ＺｎＣｌ２６０～８０ｇ／Ｌ，稳定剂ＷＤＺ－１８０～１００，光亮剂ＷＤＺ－２５０～８０ｍｌ／Ｌ，ｐＨ＝５～６，５～３５℃，１～３．５Ａ／ｄｍ＾２，在上述条件下，可获得锌含量１％～３０％光亮锡锌合金沉积层。     

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．     

A3钢表面有机膦合钼聚多酸盐转化膜的研究

由Ｎａ２ＭｏＯ４·２Ｈ２Ｏ和Ｎａ２ＨＥＤＰ·５Ｈ２Ｏ合成了有机膦合钼聚多酸盐Ｎａ８［（ＨＥＤＰ）２Ｍｏ５Ｏ２１］·５Ｈ２Ｏ。用Ｎａ８［（ＨＥＤＰ）２Ｍｏ５Ｏ２１］·５Ｈ２Ｏ的溶液处理Ａ３钢，获得了具有一定耐蚀性的黄色转化膜，适宜的工艺条件为：浓度１６ｇ·Ｌ－１，ｐＨ３．５，温度５０℃，时间８０ｓ。本文还报告了膜层的ＸＰＳ和ＡＥＳ分析结果。     

Keggin结构的钨钴杂多酸盐的合成与表征

由Ｎａ２ＷＯ４·２Ｈ２Ｏ和Ｃｏ（ＮＯ３）２·６Ｈ２Ｏ在不同条件下合成了两种钨钴杂多酸盐，并对它们的结构和性质进行了表征。     

微米级硫钨酸铵在氢气中的热分解动力学

用ＤＴＡ法和ＸＲＤ法研究了粒度为６３～７４μｍ的硫钨酸铵在氢气中的热分解机理，用Ｋｉｓｓｉｎｇｅｒ法、Ｆｒｅｅｍａｎ－Ｃａｒｏｌ法和Ｃｏａｓｔ－Ｒｅｄｆｅｒｎ法测得硫钨酸铵热分解反应三个阶段的活化能分别为（５３±０．５），（１２７±０．５），（３００±０．８）ｋＪ／ｍｏｌ，反应级数分别为０．８，０．６，１．５．硫钨酸铵在氢气中的热分解分四步进行，即（ＮＨ４）２ＷＳ４·Ｈ２Ｏｓ→（ＮＨ４）２ＷＯ４（ｓ）＋Ｈ２Ｏ（ｇ）→ＷＳ２（ｓ）＋２ＮＨ３（ｇ）＋Ｈ２（ｇ）＋２Ｓ（１）＋Ｈ２Ｏ（ｇ）→ＷＳ２（ｓ）＋２ＮＨ３（ｇ）＋２Ｈ２Ｓ（ｇ）＋Ｈ２Ｏ（ｇ）→ＷＳ２（ｓ）＋Ｗ（ｓ）＋２ＮＨ３（ｇ）＋２Ｈ２Ｓ（ｇ）＋Ｈ２     

5‘—NSF作显色剂分光光度法测定硅酸盐中微量镁

５′－硝基水杨基荧光酮５′－ＮＳＦ是一种灵敏度较高的显色剂。本文研究了在Ｎａ２Ｂ４Ｏ７－ＮａＯＨ缓冲体系中，在阳离子表面活性剂溴代十六烷基吡啶ＣＰＢ存在下镁与５′－ＮＳＦ的显色反应。该体系的灵敏度较高ε＝１０１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，镁Ⅱ浓度在０～０２２ｍｇ／Ｌ范围内服从比尔定律。在联合掩蔽剂存在下测定硅酸盐中微量镁，结果满意。１实验部分１１仪器与试剂７２１型分光光度计四川分析仪器厂生产；ＰＨＳ－２型酸度计上海雷磁分析仪器厂生产。镁标准溶液：用优级纯ＭｇＯ配制成含ＭｇⅡ１ｇ／Ｌ的储备液…     

常温磷化—发黑工艺

１　前言表面发黑技术及磷化技术广泛用于生产中,但成本高、发黑液有臭味等缺点。为了克服这些缺点,提高膜的附着力和耐磨性,本文着重探讨无毒无臭、无硒盐、含磷化液的低成本发黑液配方。２　发黑工艺２．１　磷化发黑配方ＺｎＯ,ｇＬ５Ｚｎ（ＮＯ３）２,ｇＬ１０Ｈ３ＰＯ４,ｍｌＬ１１ＮｉＳＯ４,ｇＬ１ＣｕＳＯ４,ｇＬ２～６防染盐,ｇＬ１ＮａＦ,ｇＬ３ＮａＮＯ３,ｇＬ１２十二烷基硫酸钠,ｇＬ０．１十二烷基磺酸钠,ｇＬ０．１ＯＰ聚乙酰胺,ｍｌＬ１０～５０Ｎａ２Ｓ２Ｏ３,ｇＬ１Ｔ,℃２０～…     

新显色剂甲氧基—茉并噻唑重氮氨基偶氮苯与汞的显色反应及应用研究

研究了新量色剂－６甲氧基－苯并噻唑重氮氨基偶氮苯与Ｈｇ（Ⅱ）的显色反应。在非离子表面活性剂存在下的ＰＨ１０．５Ｎａ２Ｂ４Ｏ７－ＮａＯＨ缓冲介质中,Ｈｇ（Ⅱ）与该试剂形成１：２的稳定络合物,其λｍａｘ＝５２５ｎｍ,ε５２５＝１．６×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１。汞含量在０－８μｇ／１０ｍＬ范围内遵守比尔定律,用于废水中汞的测定,得到满意的结果。     

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。