聚丙烯

Molecular dynamics simulations of NPT (constant pressure and constant temperature) dynamics are carried out to obtain specific volume as a function of temperature for polyethylene , polypropylene , poly-isobutylene , polyoxymethylene , and polydimethylsiloxane .

用NPT分子动力学模拟来获得聚乙烯、聚丙烯、聚异丁烯、聚甲醛和聚二甲基硅氧烷在不同温度下的特征体积。体积玻璃化转变温度通过对模拟得到的V-T作图的曲线的拐点决定。

The synthesized nonabsorbable materials is one kind of implant materials that achieve wide application, such as polypropylene, polytetrafluoroethylene and other patches.

合成的不可吸收材料是目前使用最多的植入材料，如聚丙烯、聚四氟乙烯及其复合补片。

Most polymers, such as polythene and polypropene are not biodegradable.

大部分的聚合物，如聚乙烯和聚丙烯都是不可降解的。

The results of TG indicate that blending Polyvinyl acetate and polypropylene can improve the thermostability of PVAC.

热重的结果表明，聚醋酸乙烯酯与聚丙烯共混后，其热稳定性增加。

Methods HIV-1 env gp41 gene of BH10 strain (nt6 977-7 497) was constructed into expressing vector pBV221 and expressed in E. Coli HB101. The expressed proteins were purified on 15% SDS-PAGE, the specific protein gel was cut down, transferred onto nitrocellulose membrane and stained with ponceau for 10 minutes.

表达产物通过15%SDS-聚丙烯酰胺凝胶电泳初步分离纯化，根据RF值，切下含特异蛋白的胶带，以Western blot法转移在硝酸纤维素膜上；免疫血清法检测合格者制备的抗原检测条带，经国家标准参比血清检测。

PP-g-MAH /down powder blend films with different content of powder were obtained after down powder were pretreated by different kinds of plasticizers,and the influence of down powder content,the type of PP,and the kind of plasticizers on the mechanical properties of blend films were studied.

采用不同增塑剂对羽绒粉体处理，制备了不同羽绒含量的马来酸酐接枝聚丙烯/羽绒粉体共混膜，分析了粉体含量、PP种类及不同增塑剂对共混膜力学性能的影响。

The polyfunctional monomer s were found to prohibite the thermal degradation of sPP.

结果表明，多官能团单体可以明显抑制间规聚丙烯在交联过程中的β降解，促进 s PP交联。

The polyfunctional monomers were found to prohibite the thermal degradation of sPP.

结果表 明，多官能团单体可以明显抑制间规聚丙烯在交联过程中的β降解，促进sPP交联。

The present paper compared the major storage proteins in starchy endosperm of four autotetraploid rice lines with that of their corresponding diploid rice lines. The content of albumin, globulin, prolamin and glutelin in each sample was determined respectively.

以4份同源四倍体水稻和4份相应的二倍体水稻为研究材料，对其种子内清、球蛋白、醇溶蛋白和谷蛋白的含量进行了测定，利用聚丙烯酰胺凝胶电泳技术分析了其特异性。

It is found that the existence of HMPAM can affect the adsolubilization ability of the surfactants pronouncedly. The longer the alkyl chain of the surfactant is the ability of the adsolubilization of the surfactant is more enhanced.

当疏水性聚合物-疏水改性聚丙烯酰胺，和表面活性剂的混合物共同对2-萘酚进行吸附增溶时发现：表面活性剂的烷基链越长，受HMPAM存在的影响其吸附增溶能力增加越明显。

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。