您要查找的是不是：
- density gradient column 密度气压柱
- Purification: Density Gradient Centrifugation (Sucrose &CsCl). 分离:密度梯度离心法(蔗糖&氯化铯).
- Methods LDL was separated by density gradient centrifugation. 方法密度梯度离心法分离人低密度脂蛋白;
- In dot etching, the photographic construction of individual dots to provide a proper density gradient suitable for dot size reduction. 中义在网点修整中，个别的网点结构依网点大小提供适当的浓度变化。
- A significant number of Ad-p27kip1 and Ad-LacZ were acquired by CsCl density gradient separation and purification. 将Ad-p27kip1、Ad-LacZ转染293细胞进行扩增、CsCl密度梯度离心、纯化，以获得大量Ad-p27kip1和Ad-LacZ。
- The relationship between the density gradient and the strength of OSCP, and the structure of OSCP are also discussed. 另外,对断面密度分布与板子强度之间的关系、复合定向刨花板结构也作了研究。
- By statistical significance test,the results of determination were compared with those of gradient column and both of them are no significant difference. 通过对模型进行数理统计检验,其测定结果与提供基础数据方法测定的结果对比,两者不存在显著性差异。
- Conclusion:High purity of MSC can be obtained by density gradient centrifugation. 结论:密度梯度离心法分离获得的人胚胎骨髓间充质干细胞纯度高。
- The anomaly element combination is Au-Cu-Ag-Pb-Zn, anomaly element intussusception are good and the tertiary density gradient of elements shows well. 在水系沉积物测量异常查证中，发现了吉拉土壤地球化学异常。
- Methods Peripheral blood monocytes were obtained from PVS patients and normal control group by density gradient centrifugation. 方法 应用密度梯度离心法将实验组即PVS病人及正常对照组的外周血单核细胞分离出来 ,然后应用酶联免疫法检测外周血单核细胞受IFN r或LPS刺激后 ,其所表达的HLA DR的变化水平。
- The karyotes were separated by density gradient centrifugation, and the stroma cells of the bone marrow were gained adherent separation method. 选择雄性6周龄SD大鼠4只,抽取大鼠股骨骨髓,使用密度梯度离心分离有核细胞,贴壁分离法获取骨髓基质细胞,以2×104/cm2的密度接种进行细胞传代与分组实验。
- Methods The sample of blood from 45 cases opf SLE and 30 healthy con-trois were measured by density gradient centrifugal assay. 方法采用密度梯度离心法检测45例SLE患者和30例正常人的血液标本。
- Methods Rat BM-MNCs were isolated by centrifugation through a Histopaque density gradient and cultured for four weeks in itro. 方法从大鼠胫骨及股骨采集骨髓,密度梯度离心法分离出骨髓单个核细胞进行体外培养,并连续收集4周培养上清液。
- A general mean shift procedure is defined by nonparametric estimation of density gradient, and the steps and convergency of the algorithm are proposed. 首先根据密度函数的非参数估计推导出均值漂移公式的一般形式，说明了均值漂移迭代算法的步骤及收效性；
- In this study, the purified and concentrated oocysts were isolated from the faecal samples by density gradient centrifugation. 本研究以不同密度的蔗糖溶液为介质，按比例配制两种密度的分离液，对采自广东省的奶牛粪便进行分离纯化，得到了较纯净的牛源环孢子虫卵囊；
- Methods Samples of peripheral blood in 64 women of 8-40 gestational weeks were collected to enrich the fetal nucleated red blood cells by density gradient centrifugation. 方法对64例孕8-40周孕妇外周血进行密度梯度离心法，富集胎儿细胞，并经显微镜下观察计数各种细胞所占百分比。
- Methods Using different techniques of collagenase digestion and discontinued density gradient centrifugation, the adult swine and rat islets were prepared. 方法采用不同的胶原酶消化法及不连续密度梯度纯化法。
- For example, some ellipticals have a "core," which is a central region where the density gradient is much shallower than the steep power law observed at large radii. 例如，一些椭圆星系有一个核，那儿的密度坡度比在大范围内观测到的能量坡度小得多。
- A modified nonlinear Schrodinger equation, governing the behaviour of nonlinear ion accoustic waves in a plasma with density gradient, is derived by the Krylov-Bogoliubov-Mitropolsky pertubation method. 本文用Krylov-Bogoliubov-Mitropolsky微扰法得出了控制具有密度梯度等离子体中的离子声波的修正非线性Schr(?) dinger方程。
