分离密度

And Catt in combination with poly-aerylamide gel preparative electrophoresis to isolate serum high density lipoprotein in a pure form was developed.

作者以多聚阴离子—硫酸右旋糖酐沉淀分离，再以聚丙烯酰胺凝胶制备电泳进一步纯化，可获得较纯净的血清高密度脂蛋白。

RESULTS: Higher purity of human BMSCs could be achieved by the density gradient centrifugation.

结果：密度梯度离心结合贴壁法能分离培养出纯度较高的人骨髓间充质干细胞。

A technique that uses a centrifugation to separate molecules according to density.

应用离心根据密度对分子进行分离的技术。

METHODS:Human bone marrow mesenchymal stem cells were isolated by combining density gradient centrifugation with plastic adherence .

方法密度梯度离心和贴壁培养相结合，分离纯化人骨髓间充质干细胞。

As they are evenly dispersed throughout genomes, usually characterized as codominant and highly polymorphic systems amenable to genotyping by polymerase chain reaction, and generally inherited in a Mendelian fashion, microsatellites have become instrumental as genetic markers in many areas.

摘 要：微卫星标记广泛分布于原核生物和真核生物基因组中，具有密度大、多态性丰富、遵循孟德尔分离定律共显性遗传、易于PCR扩增等特点，已成为近年来最引人注目的新型DNA标记。

This paper has given a thorough investigation into theapplication of BP neural network to gravitational density interface inversion as well as the implementation of wavelet theory in potential field decomposition and, on such a basis, analysed and evaluated the prospect of applying wavelet neural network to the inversion of gravitational and magnetic data.

文摘：对BP神经网络在重力密度界面反演以及小波分析在位场分离上的应用进行了深入的研究，进而对小波神经网络在重磁资料反演中的应用前景进行了分析、评价。

Disodium hydrogen phosphate dodecahydrates possesses the largest mass heat storage capacity among the low temperature phase change materials, which are classified as inorganic, organic and then: composites, yet it experiences phase segregation and super cooling when melting and hinders its application in latent heat storage system.

低温相变材料可分为无机、有机物及其复合物。十二水磷酸氢二钠(Na_2HPO_4·12H_2O)是其中质量储热密度最大的一种，但由于熔化时发生相分离，而妨碍了它的实际应用。

After 4 passages in culture, the MSCs were implanted into 96 foveola with cell density of 0.08,0.1,0.2,0.4,0.6,0.8,1,2,4,6,8,10(x104/ml) respectively. Meanwhile, the MSCs were cultured in Dulbecco's modified Eagle's medium culture medium with different concentration of fetal bovine serum, the 3-4,5dimethylthiazol-2-yl-2,5-diphenyl tetrazelium bromide assay were used to determine the proliferation index of MSCs 72 hours later, the cell cycle were determine by cytometer also.

贴壁筛选法分离、纯化MSCs，取4代以后细胞，以不同密度接种于96孔培养板内，分别以不同浓度血清进行培养，72h后，采用四甲基偶氮唑盐比色法测定MSCs增殖能力并用流式细胞仪测定细胞周期。

Methods:Via a cannula iserted into adominal aorta, Gey's balanced salt solution containing 0.025% collagenase P was perfused into rat normal pancreas. After digestion with collagenase P and protease, Nycodenz density gradient centrifugation was performed to isolate PSC. PSC was identified by its morphology, cytoplasmic lipid droplets and immunocytochemical staining for desmin, GFAP and α-SMA. Results:The production,viability and purity of isolated PSC were（15.3 ± 4.6）× 103／g body weight,（95.0 ± 3.5）%, and ﹥80％ respectively.

大鼠腹主动脉插管灌注后，经胶原酶消化、Nycodenz密度梯度离心，分离得到PSC；通过观察细胞形态、胞质内脂滴和免疫细胞化学方法检测结蛋白、神经胶质酸纤维蛋白（glial fibrillary acidic protein，GFAP）、α平滑肌肌动素（α-smooth muscle actin，α-SMA）的表达来鉴定PSC。

METHODS: Rat BMSCs were isolated by density gradient method and cultured in 3 different concentrations of oxygen.

采用密度梯度法分离培养大鼠骨髓间充质干细胞，在3种氧浓度中进行培养。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。