乙胺

Methods Protein in blood and urine was precipitated directly by acetonitrile with acetanilide was used as the internal standard using Agilent Zorbax SB-Aq column (250 mm×4.6 mm, 5 μm). The mixed solvents of water (triethylamine 0.12%, acetic acid 0.12%) and acetonitrile were used as the mobile phase to separate cephalosporins using gradient elution method at 1 mL/min and 254 nm.

以乙酰苯胺为内标，血液和尿液用乙腈直接沉淀蛋白，采用Agilent Zorbax SB-Aq(250 mm×4.6 mm， 5 μm)色谱柱，流动相选用水（含0.12%三乙胺和0.12%乙酸）和乙腈的混合溶剂梯度洗脱，流速1 mL/min，检测波长254 nm。

The deoiling effect of the polymerized additives has been evaluated by means of aerated floatation process.The result shows that when dimethylamine,diethylamine or methylamine serves as amine and the molar ratio of ...

利用充气浮选法对所合成的药剂进行了除油效果的评价，结果表明：当胺为二甲胺、二乙胺、甲胺，聚合单体与环氧氯丙烷的摩尔比为1：2时，产品的除油效果最佳。

Reaction of Ni[(C4H9O)2PS2]2 with ethylamine, n-propylamine, n-butylamine, and n-amylamine have been studied by spectrophotometry in ethanol at 30℃.

用光谱法研究了NiL2在30℃时与乙胺、正丙胺、正丁胺和正戊胺在乙醇溶液中的加合反应。

A further PCA analysis shows that the Smell-seeing sensitive array can discriminate even the class differences among methylamine, ethylamine and isopropylamine.

对响应模式的主成分分析显示，可视嗅觉阵列甚至能区分甲胺，乙胺和丙胺之间的类属差异。

hydroxy-2-acetonaphthene was obtained by the hydrolysis of 6-methoxy- 2-acetonaphthene in the presence of HCl (36%) and triethylamine as a catalyst.

摘 要：采用6 甲氧基 2 乙酰萘与浓盐酸在缚酸剂三乙胺存在的条件下进行水解反应制得6 羟基 2 乙酰萘。

The taurohyodeoxycholic acid was synthesized by aminolysis of sodium taurine with carboxy-carbonate mixed anhydride prepared by reacting hyodeoxycholic acid with ethyl chloroformate at the present of triethylamine.

猪去氧胆酸与氯甲酸乙酯在三乙胺存在下反应生成羟酸－碳酸乙酯混合酐，而后将其与牛磺酸钠进行氨解反应，合成猪磺去氧胆酸。

A sample-pretreated method of ether-extraction-precolumn-derivation was established, and the chromatographic conditions, which was used for determinating the derivant of extracted UDCA, were decided to be Hypersil C_(18) column(250×4.6mm, 10μm), acetonitrile-methol-0.005mol·L~(-1) phosphoric buffer-triethylamine(50:27:42:0.25, adjusted to pH3.0±0.1 by phosphoric acid) as mobile phase with detective UV wavelength at 247nm and column temperature at 35℃.

建立了乙醚提取-柱前衍生化血浆样品预处理方法，采用Hypersil C_(18)柱(250×4.6mm，10μm)，乙腈-甲醇-0.005mol·L~(-1)NaH_2PO_4缓冲液-三乙胺(50：27：42：0.25，磷酸调节pH3.0±0.1)为流动相的HPLC法，以溴苯乙酮为衍生化试剂，在247nm处测定家兔血浆中熊去氧胆酸衍生化产物。

The results showed: when TLC solvent system was: chloroform - methanol - diethyl amine = 90:9:1, alkaloids from lotus leaves were well isolated, and five components were isolated and identified by spraying Dragendorff reagent. The optimal conditions of HPLC solvent system were: methanol- water - diethyl amine = 75:25:0.0125. Under the conditions, components of alkaloids from lotus leaves were separated very well, and ideal RP-HPLC peaks were obtained.5、Methods of High Speed Counter Current Chromatography and preparative High Performance Liquid Chromatography applied to identify and purify alkaloids from lotus leaves were set up. When solvent system of HSCCC was: chloroform - methanol - water (pH=4.00)= 4:3:2, speed of chromatogram was 700rpm, flow speed of the mobile phase was 2mL/min, four pure components relatively were attained by isolation and purification.

结果表明：薄层层析溶剂系统为氯仿：甲醇：二乙胺=90：9：1，使荷叶中的生物碱达到了较好的分离效果，并用改良的碘化铋钾试剂喷雾显色，共分离鉴别出了5种荷叶生物碱；分析型HPLC分析检测的较优溶剂系统为甲醇：水：二乙胺=75：25：0.0125，使荷叶生物碱的各个组分达到了基线分离，并获得了较好的峰形。5、建立了高速逆流色谱和制备型HPLC技术分离纯化荷叶生物碱的具体方法。H(来源：ABC46论文网www.abclunwen.com)SCCC法在溶剂系统为氯仿：甲醇：pH4.00的水=4：3：2，色谱仪转速为700rpm，流动相流速为2mL／min的条件下，分离纯化得到了4个纯度较高的化合物。

Column: Agilent C18; mobile phase 10mol.l-1 monobasic Acetate buffer, 20 molL-1triethylamine solution adjusted to pH5.5 with Acetic acid -acetonitrile ,gradient elution, flow rate: 0.6 mLmin-1; Results:The Traditional Chinese Medicines contained Acarbose, Phenformin and Glibenclamide, and can be separated completely.

色谱柱：Agilent ZORBAX ODS C18柱(5μm，4.6×250mm， Agilent)；流动相：醋酸盐缓冲液(10molL-1醋酸胺，20 molL-1三乙胺，用醋酸调节pH5.5)与乙腈，梯度洗脱，流速：0.6 mLmin-1，色谱检测波长234nm，格列吡嗪为内标物进行定量分析。

Column: Agilent C18; mobile phase 10mol.l-1 monobasic Acetate buffer, 20 mol·L-1triethylamine solution adjusted to pH5.5 with Acetic acid -acetonitrile ,gradient elution, flow rate: 0.6 mL·min-1; Results:The Traditional Chinese Medicines contained Acarbose, Phenformin and Glibenclamide, and can be separated completely.

色谱柱：Agilent ZORBAX ODS C18柱(5μm，4.6×250mm， Agilent)；流动相：醋酸盐缓冲液(10mol·L-1醋酸胺，20 mol·L-1三乙胺，用醋酸调节pH5.5)与乙腈，梯度洗脱，流速：0.6 mL·min-1，色谱检测波长234nm，格列吡嗪为内标物进行定量分析。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。