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- Gradient elution using ethanol 乙醇梯度脱水
- 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。
- Methods Food samples were collected and determined by using autoinjector with online derivation function, gradient elution program and tandem detecting technicque. 方法使用带自动衍生功能的自动进样器进行在线衍生,梯度分离,利用二极管阵列-荧光检测器串联分析。
- By means of finding optimal range through gradient elution at first,then using multiobjective iterative regress method , the optimal progress was simple, rapid and accuracy. 通过预先由梯度洗脱确定优化区域,采用多目标逐步回归的方法,使整个优化过程变得简便、快速、准确。
- Brazil and the United States are world leaders in using ethanol. 巴西和美国是全世界主要的生物乙醇使用国。
- The best results were obtained using ethanol and isopropanol. 初步尝试出乙醇和异丙醇为较好的溶剂。
- A new method using gradient elution of reversed phase high performance liquid chromatography was set up for the separation and determination of 12 natural phenolic acids simultaneously. 采用反相高效液相色谱法梯度洗脱,对12种天然酚酸进行定性定量分析研究。
- 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
- 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 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 concentration of dextran solution was measured by testing its turbidity value using ethanol as the precipitant. 以乙醇为沉淀剂;测定水溶液中葡聚糖溶液浊度的方法测定葡聚糖的浓度.
- 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。
- 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。
- The main research includes: Using ethanol extrat and macroporous resin refining to isolate kaempferitrin from Ligustrum sinecse Lour.Var. nitidum Rehd. 主要研究工作包括： 采用乙醇提取-大孔吸附树脂精制的方法提取光叶小腊树花中的山柰苷。
- Several factors will determine the economics of moving to biofuels, including economies of scale and national policies for using ethanol in transport. 几个因素将决定转向生物燃料的经济学,包括经济规模和在交通中使用乙醇的国家政策。
- Gradient elution HPLC was used to analyze methanol extracts from white muscardine silkworm,and analyzed the data of their fingerprints by similarity. 采用梯度洗脱高效液相色谱法对获取的指纹图谱数据进行相似度分析,建立了白僵蚕的指纹图谱。
- METHODS Gradient elution method was used to determine the content of andrographolide and dehydroandrographolide in Qinghuo Zhimai tablets. 方法:用梯度洗脱法测定清火栀麦片中穿心莲内酯和脱水穿心莲内酯的含量。
- RESULTS:Neutralization reaction not only overcame the difficulty of Rifampicin s dissolution in water,but also avoided the irritation to eyes caused by using ethanol as. 结果:利用酸碱中和反应不但解决了利福平溶解困难和滴眼液的渗透压问题,还可避免以乙醇为溶剂而产生对眼睛的刺激性。
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
