聚丙烯

The nuclei density at the surface of carbon fiber is much higher than that in the bulk area, and the resulting radial growth produces a type of transcrystalline structure, and the characteristic temperature of crystallization increases with carbon f...

结晶动力学表明：结晶生长本质仍是球晶机理，促进聚丙烯结晶的原因是碳纤维使结晶过程的表面自由能降低。

Polypropylene ; Carbon fiber ; Composite ; Transcrystalline Structure

聚丙烯；碳纤维；复合材料；横穿结晶

It is shown that the surface of carbon fiber displays a high propens ity to nucleate PP crystallization. The nuclei density at the surface of carbon fiber is much higher than that in the bulk area, and the resulting radial growth produces a type of transcrystalline structure, and the characteristic temperature of crystallization increases with carbon fiber concentration.

碳纤维表面对聚丙烯结晶过程具有明显的促进作用，纤维表面成核密度轻高，结晶生长成为横穿结晶，结晶特征温度随碳纤维加入而有不同程度的升高。

COD elimination efficiency of the treated water can reach 75% or more, and the transmittancy can reach 92%～99%.

用自制阳离子聚丙烯酰胺与PAC配合处理废纸再生造纸废水，出水COD 去除率达75%以上，透过率达92%～99%。

Once the hernia defects are visualized, a polypropylene or expanded polytetrafluoroethylene biomaterial is then inserted and secured to the transversalis fascia and/or Cooper's ligament with tacks or staples. The material is of a size that completely covers the myopectineal orifice.

一旦缺损区出现于视野中，送入聚丙烯或可延伸聚四氟乙烯网状补片，并将其固定于腹横筋膜上和/或Cooper韧带上，补片的大小以完全覆盖住内环口为宜。

According to the Mannich-Reaction, a kind of chelating flocculant grafted with diethylene triamine was prepared from polyacrylamide, formaldehyde and diethylene triarmne.

研究了以聚丙烯酰胺、甲醛、二乙烯三胺为原料，按照Mannich反应机理制备部分胺化接枝型螯合作用絮凝剂及其从水中除铅性能。

Methods: SDS-polyacrylamide gel eletrophoresis was employed to analyze the seed protein of different cultivars and wild plant of Fructus Trichosanthis from Shandong and Trichosanthes hubehensis, and the finger-prints were established.

利用垂直平板聚丙烯酰胺凝胶电泳技术，对山东产瓜蒌的不同农家品种、野生种及湖北栝楼进行种子蛋白电泳分析，并绘制指纹图谱。

objective:to determine different cultivars of fructus trichosanthis in shandong, and explore their genetic relationships.methods: sds-polyacrylamide gel eletrophoresis was employed to analyze the seed protein of different cultivars and wild plant of fructus trichosanthis from shandong and trichosanthes hubehensis, and the finger-prints were established.results:there were many common bands among different cultivars and wild plant of fructus trichosanthis, but t.

目的：鉴定山东产瓜蒌的不同农家品种，并探讨它们的亲缘关系。方法：利用垂直平板聚丙烯酰胺凝胶电泳技术，对山东产瓜蒌的不同农家品种、野生种及湖北栝楼进行种子蛋白电泳分析，并绘制指纹图谱。结果：山东产瓜蒌不同农家品种和野生种种子的蛋白电泳图谱具有多条共有带，而与湖北栝楼图谱差异显著。

Effect of dodecanol, triethanolamine, CMC-Na and PAM on foamability and foam stability of composite system were studied.

2考察了十二醇、三乙醇胺、羧甲基纤维素钠、聚丙烯酰胺对SDS/OB-2复合体系起泡性和稳泡性的影响。

Copolymer of acrylamide and acryloyloxyethyl trimethyl ammonium chloride was prepared by dispersion polymerization in a salt solution.

摘 要：以丙烯酰胺和丙烯酰氧乙基三甲基氯化铵为共聚单体，采用分散聚合法在无机盐水溶液中制备了性能稳定的阳离子聚丙烯酰胺乳液。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。