查询词典 poly

Four soluble poly(p-phenylene vinylene) derivatives with asymmetric alkoxyl substituents, poly (2-methoxy-5-butoxy)-p-phenylene vinylene, poly [2-methoxy-5-(3'-methyl)butoxy]-p-phenylene vinylene, poly (2-methoxy-5-hexyloxy)-p-phenylene vinylene and poly (2-methoxy-5-octoxy)-p-phenylene vinylene, were prepared by dehydrochlorination reaction with using p-hydroxyanisole and alkyl bromide as raw materials.

以对羟基苯甲醚和溴代烷烃为原料，采用强碱诱导的脱氯化氢缩合聚合法合成了四种可溶性不对称烷氧基取代聚对苯乙炔衍生物，分别为聚（2-甲氧基－5-丁氧基）对苯乙炔、聚［2-甲氧基－5-（3'-甲基）丁氧基］对苯乙炔、聚（2-甲氧基－5-己氧基）对苯乙炔和聚（2-甲氧基－5-辛氧基）对苯乙炔。

Result of thermogravity analysis showed that the thermal stability of polyvinylamine chloride lowers with increasing in amination degree. Moreover, properties of dilute aqueous solutions of three types of poly chloride with different amination degree were compared by use of viscosimetric, conductometric, and potentiometric measurements. Results showed that both the electrostatic interaction of neighboring groups on the chain and the reduced viscosity of poly chloride are increased with increasing the degree of amination of poly . The equivalent conductivity is decreased with the increasing the concentration of poly chloride and increased with the increasing the amination degree of poly .

研究了聚乙烯胺盐酸盐的热稳定性和水溶液性质，发现：随着胺化度的提高，聚乙烯胺盐酸盐的对热稳定性逐步降低；聚乙烯胺盐酸盐是一种典型的聚电解质，其水溶液的pH值随平均分子量的变化并不明显，而随着聚乙烯胺胺化度的升高，pH值降低；随着聚乙烯胺盐酸盐的平均聚合度由82.3增加到201.8，它的m值（用于表征聚电解质侧链基团之间相互作用大小的常数）从5.13升高到5.58，而当聚乙烯胺盐酸盐的平均聚合度增加到311.4时，它的m值反而降低到了5.48；随着胺化度由55.65%升高到82.36%，m值由3.65提高到5.50；随着聚乙烯胺盐酸盐的平均聚合度的提高，聚乙烯胺盐酸盐的平均解离常数由7.48降低到7.26，同时随着胺化度的提高，聚乙烯胺盐酸盐的平均解离常数也由8.33降低到7.37；随着聚乙烯胺盐酸盐浓度的提高，溶液的摩尔电导率逐步降低，随着聚乙烯胺胺化度和聚合度的提高，溶液的摩尔电导率有所升高；在pH值为4左右时，聚乙烯胺盐酸盐的比浓粘度分别达到极值，而与聚合度的大小关系不大；聚乙烯胺盐酸盐的特性粘数明显高于其原料聚丙烯酰胺的特性粘数，分子量对特性粘数的影响十分明显，胺化度对特性粘数的影响并不显著。

Good thermal stability and self-extinguishing behavior was observed with the cured polybenzoxazine resins. Second, furan-containing benzoxazine monomers, P-FBz, BPA-FBz, and 4FP-FBz were prepared using furfurylamine as a raw material. Formation of furfurylamine Mannich bridge networks in the polymerizations of P-FBz and BPA-FBz increased the cross-linking densities and thermal stability of the resulting polybenzoxazines. P-FBz and BPA-FBz- based polymers also exhibited high glass transition temperatures above 300℃, high char yields, and low flammability with a limited oxygen index value of 31. The dielectric (Dk3.21–3.39) and mechanical properties (high storage modulus of 3.0–3.9 GPa and low coefficient of thermal expansion of 37.7– 45.4 ppm) of the P-FBz and BPA-FBz-based polymers were superior or comparable to other polybenzoxazines. 4FP-FBz used for polybenzo- xazine modification by means of formation of benzoxazine hybridation with P-FBz.

第二部份以2-呋喃甲胺为起始物，制备了P-FBz、4FP-FBz与BPA-FBz 三个含呋喃官能基之氧代氮代苯并环己烷的单体；BPA-FBz与P-FBz於开环聚合中形成之Mannich bridge网状结构有效地提升聚氧代氮代苯并环己烷聚合物之交联密度与热安定性；Poly与Poly具有大於300℃之玻璃转移温度、高的焦炭生成率与具有31之极限氧指数(Limited oxygen index， LOI)的难燃性特质，Poly与Poly之介电常数(Dk=3.21~3.39)与机械性质[3.0~3.9 GPa的储存模数与37.7~45.4ppm之低热膨胀系数( Low coefficient of thermal expansion， Low CTE)]均较其他聚氧代氮代苯并环己烷为优；4FP-FBz具有低之介电常数(Dk=2.7)，以其作为降低介电常数之反应型改质剂，与P-FBz混成，证实可有效地降低Poly的介电常数。

The saturday after the Club PP show we did the Poly Muso gig.

周六在 PP 酒吧之后，我们还参加了&Poly Muso&演出。

Oil-containing poly microcapsules were prepared by simple coacervation followed by the chemical cross-linking of coacervated PVA membrane with glutaric aldehyde through phase separation method.

本实验使用聚乙烯醇Poly为壳材，以香精油为核材，利用相分离原理，以简单凝胶法，以戊二醛为交联剂进行微胶囊包覆。

Poly tails exist in the genomes of many positive single-strand RNA viruses and plays an important role in viral infectivity.

大部分单股正链RNA病毒的基因组末端含有poly尾，这对病毒基因组RNA的感染性起着非常重要的作用。

You have all the details and instruction in your notebook how to do the canvas seat covers (face material is all canvas, back material is poly) 2 In order to make the patterns that you wrote below, you need to take the pattern papers of seat cover made of tweed with quilting.

你在你的笔记本中有所有的细节和指导该如何做帆布位子掩护(脸材料是所有的帆布，后面的材料是 poly) 2 为了要制造你在下面写的式样，你需要拿位子以斜纹软呢制成的掩护的式样文件制成棉被。

METHODS: Switch mechanism at 5′end of mRNA template technology, SMART technology, was used to construct the libraries. The purified Poly+RNA was used as template, Powerscript reverse transcriptase was used to transcribe and 5′oligo as a short extended template was added to the 5′ end of mRNA to enrich the fulllength cDNAs.

运用mRNA 5′末端的模板转换方法，即SMART技术，以纯化的Poly+RNA为模板，用Powerscript逆转录酶进行转录，并在mRNA 的5′末端添加一段5′ oligo作为延伸后的模板，从而富集全长 cDNA。

METHODS: Switch mechanism at 5′end of mRNA template technology, SMART technology, was used to construct the libraries. purified Poly+RNA was used as template, Powerscript reverse transcriptase was used to transcribe and 5′oligo as a short extended template was added to the 5′ end of mRNA to enrich the fulllength cDNAs.

运用mRNA 5′末端的模板转换方法，即SMART技术，以纯化的Poly+RNA为模板，用Powerscript逆转录酶进行转录，并在mRNA 的5′末端添加一段5′ oligo作为延伸后的模板，从而富集全长 cDNA。

METHODS摘要: Switch mechanism at 5′end of mRNA template technology, SMART technology, was used to construct the libraries. The purified Poly+RNA was used as template, Powerscript reverse transcriptase was used to transcribe and 5′oligo as a short extended template was added to the 5′ end of mRNA to enrich the fulllength cDNAs.

方法摘要：运用mRNA 5′末端的模板转换方法，即SMART技术，以纯化的Poly+RNA为模板，用Powerscript逆转录酶进行转录，并在mRNA 的5′末端添加一段5′ oligo作为延伸后的模板，从而富集全长 cDNA。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。