isogradient

After simulation of dynamics process in this linac with Parmela program,we get to the point that it is better on the whole,to choose constant impedance accelerating structure than constant gradient accelerating structure on the NCEL of 10MeV class.

对一个新型、紧凑、高效的电子直线加速器的加速管的设计 ,进行了等阻抗与等梯度两种结构的比较研究 。

A method for determination of Sudan Ⅰ、Ⅱ、Ⅲ、Ⅳ in food by constant gradient reversed-phase high performance liquid chromatography was established in this paper.

建立了等梯度反相高效液相色谱法检测食品中苏丹红Ⅰ、Ⅱ、Ⅲ、Ⅳ的方法。

The carbofuran and carbaryl in water samples were extracted by dichloromethane,the extract was concentrated by nitrogen blow-down,and the isogradient elution was used in HPLC detection.

对水样中呋喃丹和甲萘威的高效液相色谱标准检测方法进行了改进,以二氯甲烷提取水样中的呋喃丹和甲萘威,采用氮吹法浓缩提取液,HPLC测定中采取等梯度淋洗。