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In order to isolate the active compounds in ethyl acetate fraction of Psoralea corylifolia L., activity-guided isolation was performed along with chromatographic techniques. Four active compounds were isolated from ethyl acetate fraction and identified by their NMR spectral data and physical-chemical properties. They are corylin and bavachin, which showed stimulating effect on osteoblastic proliferation and differentiation, isopsoralen and psoralen exhibited activity of promoting cell differentiation in some degree.

为了追踪分离补骨脂乙酸乙酯萃取物中的活性成分，本实验采用多种色谱分离技术，以活性测试为导向，结合波谱技术及理化数据，从补骨脂乙酸乙酯萃取物中分离并鉴定了4个活性化合物的化学结构，它们是具有促进细胞增殖和分化作用的补骨脂异黄酮和补骨脂二氢黄酮，对细胞分化有一定促进作用的异补骨脂素和补骨脂素。

Vegetation fractions in different districts of Wuhan were calculated based on remote sensing images (TM images and ETM+ images) in 1988,1991,1996 and 2002 by employing method for dimidiate pixel model,and the vegetation fraction maps of different periods were generated to analysis the temporal change of vegetation fraction of Wuhan area.

利用1988、1991、1996和2002年4个时相的TM和ETM+遥感影像为数据源，以归一化植被指数像元二分法为植被覆盖度估算模型，计算了武汉地区不同时期的植被覆盖度，生成了该地区不同时序的植被覆盖度图，以此分析武汉地区植被覆盖度的时空变化。

Relationships between durene modified pitch properties, such as soften point,coke yield and viscosity, and pitch fractions, especially TS fraction and PI fraction had been investigated.

考察了不同压力体系中均四甲苯改性沥青的TS组分和PI组分与沥青软化点、焦化值及粘度三种性能参数之间的相互关系。

Following the protocol, you collect, the first protein fraction that exits the column, and discard the rest of the fraction s that elute from the column later.

根据方法，你收集柱子上出来的第一个蛋白质组分，弃去后来流出的其它蛋白质组分。

In this context, we have reported recently that the volume of myocardial tissue occupied by perimysial and endomysial collagen was lower in hypertensive patients with HF and depressed ejection fraction, than in hypertensive patients with HF and preserved ejection fraction and normotensive subjects.56 Of interest, the interstitial and perivascular accumulation of collagen fibres was abnormally high in the two groups of patients.

在这种情况下，我们已经说了占用体积perimysial心肌组织人肌内膜胶原水平低的高血压患者用高频和沮丧的射血分数在高血压患者的心力衰竭和保存被罚出场分数与正常血压subjects.56舒张压的利息、间质和血管堆积过高的胶原纤维是在两组病人。

The fitting results of model parameters demonstrated that, sorption nonlinearity of phenanthrene in the natural soil increased in the following order: humic acid fraction〈 whole soil〈 humin fraction, and enhanced gradually.

模型参数拟合结果显示：胡敏酸、全土、胡敏素吸附的非线性程度依次增加，并随时间逐渐加强，在吸附／分配的动力学过程中，胡敏酸和胡敏索分阶段不同的变化特征反映出土壤有机质组分异质性对非线性吸附行为的影响。

In the fast sorption stage （before 48 h）, there was an up-to-down fluctuation of phenanthrene sorption ratio （sorption amount/added amount） in humic acid fraction, possibly due to surface sorption by minerals and competitive sorption by humin fraction.

在快吸附至转折点阶段，胡敏酸组分中菲的吸附比例出现先升后降的波动，可归因于初始时段矿物表面吸附、胡敏素竞争吸附的影响。

ELISA and CsCl- isopycnic ultracentrifugation purification products in each fraction indicated that the particle densities of the fraction with higher rHBcAg antigenicity mainly distributed at the densities of 1.27g·mL-1 and 1.40 g·mL-1, respectively.

分管收集的超离心纯化产物经ELISA抗原活性检测和密度分析，可知ELISA反应强度较高的收集管中的颗粒密度主要分布在1.27g/mL和1.40 g/mL两个峰值处。

The free fatty acids were extracted with petroleum ether and were separated on silicon gel column chromatography. The ethyl acetate-soluble lipid fraction and water-soluble lipid fraction were subjected to hydrochloric acid-catalyzed methanolysis, then were extracted with petroleum ether, respectively.

用石油醚提取低极性组分，经硅胶柱层析分离得到游离脂肪酸；用乙酸乙酯提取酯溶性神经酰胺及其衍生脂类，提取物和残余的水溶性脂类分别经盐酸甲醇解，水解产物再用石油醚提取。

The fraction is not described, but in the Celtic Rite there was a very complicated fraction, and in the Mozarabic the Sacred Host is divided into nine particles, seven of which are arranged in the form of a cross.

分数不是描述，但在凯尔特人队礼是一个非常复杂的分数，并在摩沙拉神圣主机分为9个粒子，其中7个排列形式的十字架上。

This is the inheritance of the tribe of the children of Issachar according to their families, the cities and their villages.

19：23 这些城并属城的村庄就是以萨迦支派按着宗族所得的地业。

I've have enough of your garbage.

我听了你的废话。