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To establish a MPLC method for the content determination of resveratrol in Polygonum cuspidatum Sieb. Et. Zucc, Analytical column SOURCE 5RPC ST 4.6/150 was used with a mixture of acetonitrile+water (30+70,volume ratio ) as mobile phase ,with a flow rate of 1ml/min and the UV detection wavelength was 306nm, The linear range was 0.6-1.6mg/ml (r=0.9919). The average recovery of prodatin was 103.0%-90.4%(RSD=7.21%). The method is convenient and accurate. Result indicated a reverse phase chromatography media based o n polystyrene/divinyl benzene has excellent resolution for resveratrol in cuspidatum. P rovide theoretical support for process development.

色谱条件采用SOURCE 5RPC ST 4.6/150预装柱,以乙腈/水(体积比30/70)溶液为流动相,流速1ml/min、检测波长为308nm,结果表明,白藜芦醇在0.6~1.6mg/ml的浓度范围内峰面积积分值与浓度的相关系数r=0.9919;所测定的虎杖饮片中白藜芦醇平均含量为0.304%,平均回收率为103.0%~90.4%;实验表明,以聚苯乙烯为基架的反相介质对于虎杖中自藜芦醇具有良好的分辨率,适合其有效成分的检测、分离,对虎杖中白藜芦醇制备的科学研究过渡到工艺开拓有很好的借鉴。

A 4.70 g partially pure ginsenoside Rd was obtained together,the yield of which was 15.6%.We adopt the mothod of crystallization to epurate.

结果表明,在硅胶柱分离中,从30 g二醇类皂苷分离得到含人参皂苷Rd的皂苷9.46 g,得率为32.5%,得到较纯人参皂苷Rd4.70 g,得率为15.6%。

An EPMA was performed quantitatively on the influence of Ce upon the Mn segregation in cellcrystals, columnar and Equiaxial dendrites of high-Mn steel.

与此同时,用电子探针微区分析考察了Ce对高锰钢中Mn在胞晶、柱状树枝晶及等轴晶内偏析的定量影响。

Gingerols in ginger oleoresin were separated by AB8 macroporous adsorption resin and silica gel column chromatography. The samples were characterized by the gas chromatography-mass spectrometry method.The peak area normalization method was used to determine the relative percentage of the components and the rate of accumulation of gingerol was determined by contrasting with gingerol standard samples. The results showed that gingerols was concentrated on the 3rd and the 4th parts.

采用硅胶柱层析和AB8大孔树脂吸脱附两种方法分离姜油树脂中的姜酚,采用气相色谱-质谱(gas chromatography-mass spectrometry, GC-MS)对分离样品进行表征,用峰面积归一化法对测试样品的气相色谱-质谱结果进行分析,确定了分离样品中各组分的相对峰面积百分比。

Precolumn derivatization and HPLC were applied to the determination of glyoxal in cosmetics.

建立了柱前衍生化,高效液相色谱法测定化妆品中乙二醛的方法。

Agares, the second spirit named in the Goetia, is a duke who controls 31 legions of demons.

agares ,第二精神名单中,所罗门七十二柱魔神,是一个公爵谁控制31军团的恶魔。

The binding energies of the hydrogenic impurity states in a cylindrical quantum wire with finite deep potential well are discussed.

三、将模型进一步改进,考虑有限深柱形量子线中类氢杂质态的性质。

And as the literature mentioned, it is suitable for Anaerobic photosynthetic hydrogenic bacteria to treat the effluent of Anaerobic fermentative hydrogen production process, which contain massive volatile acid.

依据本研究室在过去四年的研究中发现,完全混合式CSTR反应槽最适合酦酵产氢反应,柱塞流式反应槽最适合光合产氢反应。

Several problems concerning karstic study of Majiagou limestone in area of North China are discussed in this paper.

讨论了华北地区奥陶系马家沟组灰岩(O2)岩溶研究中的几个问题,包括沉积岩溶、暴露岩溶、埋藏岩溶、现代岩溶及陷落柱等。

Fruit dehiscent siliques, linear, latiseptate, sessile; valves with a prominent midvein, glabrous or rarely pubescent with stalked, forked and 3-rayed trichomes, smooth; replum rounded; septum complete; style obsolete or to 0.2 mm; stigma capitate, entire.

果开裂长角果,线形,,无梗;裂爿具突出中脉,无毛或很少短柔毛具柄,分叉和伞辐毛状体,平滑;假隔膜绕行;隔膜完全;花柱废退的或到0.2毫米;柱头头状,全缘。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。