Because of the complex fractionation mechanism of oxygen in organic matter , the potential application of organic oxygen isotope is restricted in agriculture , ecology and paleoenvironment .
To develop an approach for fractionating cancer cell lysates by two-dimensional ( 2-d ) liquid phase chromatographic fractionation .
二维液相色谱分离法是一种有效的分离肿瘤细胞裂解液的方法。
This is known as vacuum fractionation .
这就是所谓的真空分馏。
The study dealt with the effect of different temperature and time on the protein fractions of rice by the fractionation of protein .
采用蛋白质组分系统分离分析,研究了不同处理温度和时间对大米蛋白质组分的影响。
Removal of cu ( superscript 2 + ) from simulated aqueous solution by foam fractionation was studied using c18h30so3 as the surfactant , especially the effects of ph , gas flow rate , surfactant dosage and volume of the solution were examined .
However , there are some differences in abundance , eu-anormaly and degree of fractionation of light and heavy rare earth elements , indicating the heterogeneity of the crustal composition in different geological periods and structural environments in the early pre-cambrian in the area .