查询词典 permeation

The accuracy of gel permeation chromatography is very important since it was used to determine the molecular weight distribution of polymer and to set up the relationship between polymer structure and properties. In this thesis, the instrumental spreading of a high temperature GPC was evaluated by coupling with a two-angle laser light scattering detector.

凝胶色谱作为测定聚合物分子量和分子量分布，GPC与光散射检测器联用作为表征聚合物的绝对分子量、分子尺寸及支化结构，建立聚合物材料结构与性能之间关系的研究手段，其本身的准确性十分重要。

diffusion ; gas separation ; membrane materials ; methane steam reforming/metal dispersed microporous membrane ; hydrogen selective permeation ; sol-gel process ; membrane reactor

大连理工大学；日本国九州大学；日本国九州大学扩散；气体分离；膜材料；甲烷蒸汽转化法/金属分散多孔膜；氢选择渗透；溶胶-凝胶法；膜反应器

The results indicated that the structure of the carbon membrane is micrometer scale. The N〓 permeation rate is 10〓～10〓cm〓/cm〓. s. cmHg.

Pa范围内。随着原料粒度的增大、成型压力的减小以及甲基纤维素用量的减少，微滤炭膜的孔径分布变宽，平均孔径及N〓透量增大。

Effects of the mol ratio of acrylic acid/vinyl acetate and the churn-dasher on conversion, molecular weight and molecular weight distribution of the obtained polymers were investigated by gravity method and gel permeation chromatography.

通过聚合转化率和凝胶渗透色谱的测定，研究了聚合过程和所制备聚合物的分子量及其分布，以及丙烯酸对聚合物分子量分布的影响；进一步探讨了反应装置的安装及结构对聚合反应的影响。

RESULTS: 20% and 70% ethanol greatly improved the percutaneous permeation of tetracaine ...

含 70 %乙醇的丁卡因凝胶剂具有较强的透皮作用和局麻效果

AIM: To investigate the enhancement of ethanol on percutaneous permeation and topical anaesthesia of tetracaine gel.

目的 ：考察透皮吸收促进剂乙醇对丁卡因凝胶透皮和局麻作用的影响。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。