聚丙烯

In short,the improvement of surface hydrophilicity is attributed to both the formation of polar oxygenous group and the increase of surface roughness.

可见，聚丙烯表面亲水性的提高来源于含氧基团数量的增加和表面粗糙度的增加。

Keywords polypropylene;bumper; paintable ;anti-aging;mechanical property

关键词聚丙烯；保险杠；可漆；耐老化；力学性能

Keywords polypropylene;bumper; paintable ;anti-aging;mechanical property

聚丙烯；保险杠；可漆；耐老化；力学性能

Methods Three kinds of special sequence primers for polymerase chain reaction with regard to the mutation styles (CGT、GTT、GAT) at codon 12 of K-ras were used to study the human pancreatic cancer cell line Patu 8988.The amplification products were studied with 12% polyacrylamine gel eletrophoresis to detect the style of point mutation.

针对K-ras基因第12位密码子点突变方式(CGT、GTT、GAT)设计顺序特异性引物，对人胰腺癌细胞株Patu 8988进行聚合酶链反应，扩增产物经12%非变性聚丙烯酰胺凝胶电泳后判断该细胞株有无K-ras基因点突变及其突变方式。

Fluorophore-assisted carbohydrate electrophoresis was used to analyse pectic oligosaccharides. The influence of different factors on the separation of oligosaccharides by FACE was investigated.

荧光辅助糖电泳是首先用荧光衍生化试剂对糖类分子的还原端进行衍生化标记，然后在一定浓度的聚丙烯酰胺凝胶上进行分离的分析方法，可同时分析中性糖与酸性糖。

The paper expatiated the physical characters and mechanical performances of the composite material slabs synthesized by one, two, three or four minerals namely mica, mica + calcite, mica+ pyrophyllite + calcite or mica + calcite + pyrophyllite + periclase. It is concluded that the quality of the composite material consist of multiple minerals is better than the single material.

因此 ，国内外常利用金属纤维、有机增强纤维(碳纤维、木质素纤维、聚丙烯纤维)和无机矿物(玻璃纤维、岩棉、海泡石纤维、硅灰石纤维)来替代石棉材料，用于生产摩擦材料和高档保温材料 [1-2 ]。

With the vertical flat electrophoresis of polyacrylamide gel, 12 Pholiota adipose strains from different regions were compared and analyzed in esterase isozyme character and the genetic differences among strains were analyzed with the cluster analysis software.

方法］利用垂直板聚丙烯酰胺凝胶电泳，对来源于不同地区的12个黄伞菌株进行酯酶同工酶比较和分析，并通过聚类分析软件对各菌株间的遗传差异性进行分析。

Three kinds of molecular weight determination methods, i.e., size exclusition chromatography, sodium dodecyl sulphate-polyacrylamide gel electro phoresis and high performance liquid chromatography / electro spraying ionization-mass spectrometry (HPLC/ESI-MS) are introduced to study of the attribute of collagen hydrolysates.

应用体积排阻色谱、聚丙烯酰胺凝胶电泳、高效液相与电喷雾质谱联用(HPLC/ESI-MS)这三种蛋白质分子量分析测试技术，来表征胶原水解产物的分子量，以寻求较好的胶原水解产物分子量的测试方法

Methods The pept ide was separated by ion exchange column chromatography and further purified by r everse phase HPLC,and the molecular weight was determined by tricine gel electro phoresis.

用离子交换柱层析法分离，用反相高效液相色谱法进一步纯化，经聚丙烯酰胺凝胶电泳分析确定相对分子质量。

NIPP-1 is a subunit of the major nuclear protein phos- phatase-1 (PP-1) in mammalian cells and potently inhib- its PP-1 activity in vitro.

尼普- 1是一种蛋白质亚基的主要核磷植酸酶- 1（聚丙烯- 1）在哺乳动物细胞高效促使inhib -它的PP - 1活性的作用。

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。