毛细管

In this work, the suitability of capillary chromatography for the quantitative analysis of melanin in foods was investigated.

本实验利用毛细管电泳化学衍生荧光检测技术建立了食品黑色素的分析新方法。

Objective To establish a capillary gas chromatography for determining the contents of phenol and menthol in itch relief agent.

目的 建立毛细管气相色谱法同时测定止痒灵中苯酚和薄荷脑的含量。

The effects of fenvalerate, phoxim and their mixture at about doses of LD〓 separately on the larva with 4 instars of cotton bollworm in development, spermatogenesis, spermateliosis and male mesoblast gonad were studied with micro-application method.

以毛细管点滴法，分别研究了约LD50剂量的氰戊菊酯、辛硫磷及其混剂对棉铃虫4龄初期幼虫的生长发育、精子发生与形成以及雄性中胚层生殖腺的影响。

Samples were extracted with methanal, separated by capillary column and determined with FPD detector.

采用气相色谱法测定了90%敌百虫晶体在金银花中的残留动态，金银花样品用甲醇提取，毛细管柱分离，FPD检测器测定。

Methods: The air was drawn through a glass fiber filter to collect methoxychlor. Methoxychlor was extracted from the filter with hexane, and the sample was analyzed by gas chromatography using ECD.

玻璃纤维滤纸吸附空气中甲氧滴滴涕，用正已烷超声洗脱后毛细管气相色谱测定。

The method on trans fatty acids analysis in food is very important. The effects of methylate sodium, potassium hydroxide, sulfuric acid and boron trifluoride in methanol and their different concentration and dosage on TFA analysis were studied. The chromatographic condition and the influence of time and temperature on the esterifation of TFA using boron trifluoride in methanol were optimized. A method for analyzing TFA were established by GC based on boron trifluoride in methanol and RT-2560(100m×0.25mm×0.2μm) capillary column.

研究了甲醇钠－甲醇、氢氧化钾－甲醇、浓硫酸－甲醇和三氟化硼－甲醇4种甲酯化试剂的浓度、用量及甲酯化时间和温度对反式脂肪酸检测的影响，优化了色谱条件，建立了以三氟化硼－甲醇法甲酯化，RT-2560(100m×0.25mm×0.2μm)毛细管柱为基础的反式脂肪酸气相色谱检测方法，C18：1-9 t， C18：1-11 t， C18：2-9 t， 12 t和C22：1-13 t 4种反式脂肪酸的最小检出浓度在0.774.08 mg/kg之间。4种反式脂肪酸不同添标浓度回收率为98.44%101.23%，重复测定的相对标准差在0.22%1.31%之间，有较好的准确度和重现性。

The main results and conclusions were as follows: 1 Conditions of HPLC and GC were probed to, and their correlation coefficients and limits of detection met the requirement of microanalysis.

主要研究结果和结论如下： 1确定了高效液相色谱法和毛细管气相色谱法的条件，相关系数和最低检出限均符合微量分析的要求。

A new technique for rapid 3D microstructure preparation using micropipette is investigated.

本文提出了一种利用毛细管微探针进行快速制备三维微结构的新方法。

The longitudinal component of electromagnetic wave propagating in fiber can be expressed by Based function or the modified Bessel function of second kind. Based on this principle, we put forward a simple method for generating a Bessel beam with glass capillary and focusing lens.

对光纤中传播的电磁场分析发现，其纵向分量可以用贝塞耳函数及第二类变态贝塞耳函数来描述，据此，提出一种利用玻璃毛细管和聚焦透镜实现贝塞尔光束的简易方法。

Sodium borate was chosen as the buffer andα- naphthylamine and NaBH3CN as the derivation agents. The optimal conditions were 60 mM pH 11 sodium borate buffer, 1.0 psi pressure injection for 90s. Compared with the normal CZE method, the detection sensitivity of glucose was enhanced by more than 20 times, and that of fructose nearly 60 times.

本文的最后一部分，选用硼砂作为缓冲液，以α-萘胺及NaBH3CN作为衍生化试剂，探索了采用场放大进样方法，用毛细管电泳对葡萄糖和果糖进行分离和富集的实验条件，最优的实验条件为60 mM，pH 11.0硼砂缓冲液，1.0 psi压力进样90s，和常规方法相比，葡萄糖的检测灵敏度提高了20多倍，果糖提高了近60倍。

If you are committed to an education career, then the Master of Arts in Education from Ashford University is for you.

如果你是致力于教育事业，那么，艺术教育硕士学位阿什福德大学是给你的。

objective:to explore the expression of survivin protein and its mrna in rectal cancer and their clinic significance.

目的：研究凋亡抑制因子survivin蛋白及其mrna在直肠癌组织中的表达及其与临床病理关系。