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- METHODS Use a BDS-C18 column with linear gradient elution of sodium acetate buffer (pH 4.5) - methanol (80:20) and methanol at the flow rate of 1.0mL/min. The detection wavelength was 271nm. 方法采用BDS-C18柱;以醋酸-醋酸钠缓冲液(pH4.;5)-甲醇(80:20)为流动相A;甲醇为流动相B进行程序梯度洗脱;检测波长271nm;流速1
- Low flow rate and high temperature tends to favorto elution process. 高速低温有利于吸附,低速高温有利于洗脱;
- Dual linear gradient elution can be performed with two specially made glass container and a high pressure constant flow pump. 用两个特制的玻璃容器及一台平流泵即可实现二元线性梯度洗提。
- Consistent flow rate from nebulizer to nebulizer. 在雾化器间提供持续稳定的流通速率。
- A zero dead volume microinjector,a constant pressure separation system and a flow splitter for gradient elution are designed,which are effective for solving the existing main problems of CEC. 设计了一种包括具有极小死体积的进样器、恒压分离系统和适于梯度洗脱的分流器的流路结构,可有效地解决CEC现存的主要问题。
- Affect the melt flow rate and the cooling speed. 会影响熔体的流动性和冷却速度。
- Possibility to control the flow rate by Pump. 由蠕动泵调节盐溶流量。
- Typical maximum system flow rate (7.5 feet/sec. 标准最大系统流量为7.;5英尺/秒。
- METHODS Gradient elution HPLC was used to analyze the alcohol extracts of Radix Salviae Miltiorrhizae. 方法采用梯度洗脱高效液相色谱法分析丹参乙醇提取物。
- The HTA flow rate has two-faced influences on them. 热风流量对其影响呈现两面性。
- The HPLC was subjected to gradient elution and negtive ion mode was adopted in mass spectrum. 高效液相色谱用梯度洗脱,质谱用负离子模式。
- The extracted phenols were detected by an ODS column, gradient elution and programmable UV wavelength detector. 实验以ODS柱为分离柱，采用梯度洗脱，可编程紫外检测器进行样品检测。
- The effective and active components in bamboo leaves were separated using gradient elution and column chromatography. 采用梯度洗脱及柱色谱法对竹叶中的有效活性成分重点为黄酮进行了分离研究、提纯。
- The calculation results show that the pressure gradient decreases with the annular eccentricity increasing and increases with the flow rate increasing. 结果表明，压力梯度随环空偏心度的增大而减小，随流量的增大而增大。
- In order to get better resolution, a simple device which can produce gradient elution is designed. 为了达到更好的分离效果,我们参考文献上有关于梯度冲堤的方法,设计出一个简单的装置。
- Either flow rate is insufficient or CPU is overoccupied. 不是流量不够用就是CPU资源占用过多!
- A simple gradient elution device and a UV-Vis spectrophotometric detector for HPLC was de, signed. 设计了一种用于高效液相色谱分析的简易梯度洗提装置及UV分光光度检测器。
- Microcystins were successfully separated under isocratic and gradient elution,and the latter has better efficiency. 在等度及梯度洗脱条件下,三种毒素均被完全分离,梯度洗脱时峰形更好,检测灵敏度较高。
- Detection wavelength was 260 nm,flow rate 0.7 mL/min. 检测波长2 6 0nm ; 流速为 0 .;7mL/min。
- How the Catering Enterprises Face a High Employee Flow Rate? 员工流动率高餐饮企业如何面对?
