聚丙烯

To research the mechanical properties of stabilized slaking mudstone mixed with solidifying-agent and polypropylene fiber, a series of experiments was carried out by orthogonal test.

针对某矿区掘进巷道的底板泥岩泥化物，研制了一种高效固化剂，将该固化剂和聚丙烯抗裂纤维用于泥岩泥化物的加固工程中。

Seven isozymes were analyzed by means of horizontal sliceable starch gel electrophoresis.

采用水平切片淀粉凝胶电泳检测了七种同工酶的酶谱图式，从中筛选出酯酶同工酶进一步作聚丙烯酰胺凝胶电泳分析。

A gradual transition from smectic to a-crystalline structure of the as-spun fibers with increasing spinning speed can be observed.

适当选择上述参数以控制或改变卷绕丝的织构可提高高速纺出聚丙烯纤维的质量。

Those results showed that the speed of crystallization was increased so that the spherocrystal with small uniform was formed.

由于PP球晶均一细化减弱了光折射和反射的影响，增加了聚丙烯的透光率和光泽度并改善了球晶结构和力学性能。

It was iound in the experiment that the glass fiber made crystal peak temperature raise 8~9 ℃, Crystal original taper to be large, spherocrystal size small, it -acted the function of hetero-geneous nucleation for polypropylene . High density polyethylene has plasticizing efficancy and combined effect of hetero-geoeous nu...

试验表明PP/GF/HDPE复合物的结晶峰温度升高8～9℃，结晶起始斜率变大，球晶几何尺寸明显减小，复合物中的玻璃纤维起到异相成核作用，高密度聚乙烯对聚丙烯有增塑作用并对异相成核具有协同效应。

By the study of the crys-tallization kinetics it is concluded that the crystallization in spherulitic in nature,carbon fiber promotes the crystallization of PP by decreasing it's crystalline surface free energy.

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。

When OMMT content was below the percolation threshold, at small shear strain conditions, shear flow could enhance the crystallization of iPP, and the crystallizing entity was spherulitic.

OMMT在复合材料中的组分含量较低时，剪切场的施加能够明显地促进聚丙烯的成核与结晶生长，随着剪切应变的增加，由于剪切诱导作用，样品中形成串晶及取向的球晶结构。

The polypropylene/Stannic oxide (PP/ SnO2) composites were prepared by means of blending.

采用共混法制备了聚丙烯/氧化锡（PP/SnO2）抗静电复合材料。

Objective To establish a new method for isolating serum β-lipoprotein subfraction s using second double gradient polyacrylamide gel electrophoresis.

目的建立一种分离血清β脂蛋白亚组分的新方法———二阶双梯度聚丙烯酰胺凝胶电泳法。

To evaluate the LDL particle size and subfraction pattern and their association with coronary heart disease in Chinese population, a case-control study was conducted. Using the agarose-acrylamide composite gradient gel electrophoresis, LDL peak particle diameter was determined in 105 subjects with angiographically verified coronary artery disease and 103 matched healthy controls. Two LDL subfraction patterns were identified by the LDL peak particle diameter.

本课题以病例对照研究设计评估国人LDL颗粒大小和亚组分模式及其与冠心病关系。105例经冠状动脉造影确诊的冠心病患者和年龄性别构成匹配作为对照组的103例健康检查者的LDL峰颗粒直径，用琼脂糖聚丙烯酰胺混合凝胶电泳进行测定。

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。