查询词典 chromatography

The methods of preserving eleostearic acid were studied, adopting content of eleostearic acid as index. Eleostearic acid was esterificated with BF3 in methanol. The content of eleostearic acid was determined by gas chromatography, and the structure is studied by infrared spectroscopy.

初步研究了桐油酸的保存方法，以α-桐油酸含量为指标，将桐油酸与三氟化硼－甲醇溶液进行甲醋化，采用气相色语法检测桐油酸含量，并用红外光语扫描结构。

To evaluate the potential of several biodiesels, which had different content of fatty acid methyl ester, as substitute solvent for quizalofop-p-ethyl emulsifiable concentrate, the type and content of fatty acid methyl esters in tested biodiesels were analyzed by gas chromatography, and 5% quizalofop-p-ethyl ECs were prepared with different biodiesels, respectively. The control test against gramineous weeds by the 5% quizalofop-p-ethyl ECs were carried out in greenhouse.

为评价不同来源生物柴油作为溶剂配制精喹禾灵乳油的效果，采用气相色谱法测定了几种生物柴油中脂肪酸甲酯的种类及含量，利用相应制备的5%精喹禾灵乳油进行了防治禾本科杂草的盆栽试验，同时比较了不同生物柴油对药剂稀释液表面张力、干燥时间和在叶片表面沉积量等药液物理性状的影响。

The mechanism in which trehalose is produced from dextrin or starch hydrolyzate by endocellular enzymes of bacterium D-97 can be elucidated by high performance liquid chromatography with differential refraction detection basically, including the effect of the different carbon sources on the endocellular trehalose-producing enzymes in bacterium D-97 and the possibility or ability of the endocellular enzymes to produce trehalose using maltooligosaccharides of different chain lengths.

通过高效液相色谱/示差折光检测系统分析可获得细菌D-97利用糊精或淀粉水解物合成海藻糖的基本生物学信息，包括微生物培养碳源对细菌D-97胞内海藻糖合成酶系的影响以及该酶系利用不同种类或不同分子链长度的麦芽寡糖合成海藻糖的能力及作用过程。

The original model of ASTM is calibrated with correction parameters obtained from differences between the calculated values of gas chromatography and the experimental data of Engler method.

利用模型计算值与实验值之间的误差获得模型校正参数，对原始模型进行校正。

Using ASTM method as basic model,a method is proposed for measuring distillation range of petroleum fractions by Engler distillation related with gas chromatography simulated distillation technology.

以美国材料与试验协会方法为基础模型，提出一种基于色谱模拟蒸馏技术的恩氏蒸馏馏程测定方法。

Methods The SpaA was purified by electroelution from NaOH-extracted antigen of Erysipelothrix rhusiopathiae strain C43311. The rSpaA-N was expressed in E. coli BL21 as a soluble protein by IPTG inducing,and purified with GST affinity chromatography. Mice of each group were subcutaneously immunized three times with 50μg or 100 μg of native SpaA, rSpaA-N or NaOH-extracted antigen with in complete or incomplete Freund adjuvant at 2-week intervals.

将猪丹毒丝菌C43311株SpaA-N以可溶形式表达在大肠杆菌BL21中，用GST Bind Resin纯化试剂盒纯化rSpaA-N，采用电洗脱法从猪丹毒丝菌C43311株NaOH提取抗原中纯化天然SpaA，将rSpaA-N、天然SpaA和NaOH提取抗原制成亚单位疫苗，同时设GST及生理盐水对照组，间隔2周分3次皮下免疫小鼠，第3次免疫后2周用100LD50猪丹毒丝菌C43065株进行腹腔攻毒，采用间接ELISA方法检测免疫组小鼠血清的抗体动态变化。

The headspace gas chromatography was used to determin the ethanal content in the production process of bottle grade PET chip.

论述了瓶级聚酯切片生产过程中，采用顶空气相色谱法测试切片中乙醛含量的称样量、样品处理、颗粒度、顶空热平衡时间、热平衡温度、标定及其他顶空测量参数的优化。

The main metabolites in each reactor were detected by UV/VIS, infrared and high performance liquid chromatography and mass spectrometry. Probably, the mother dye molecule facultatively hydrolyzed to produce 1-NH2-2-hydroxy anthraquinon, OH-substituted anthraquinon and 3,4-dihydroxy-benzonic acid.

对各反应器中主要的代谢产物分别进行紫外-可见、红外和高效液相色-质联谱仪检测分析后发现，母体染料经兼氧水解首先生成1-氨基-2-羟基蒽醌以及还原态的—OH基取代蒽醌隐色体，进一步水解生成3，4-二羟基苯甲酸。

Key words］desmoid-type fibromatosis;adenomatous polyposis coli gene;β-catenin gene;denaturing high performance liquid chromatography

关键词］韧带样型纤维瘤病；APC基因；β-catenin基因；变性高效液相色谱分析

Denaturing high performance liquid chromatography and direct sequencing in conjunction with DNA pooling were used as possible strategies for augmenting the efficiency, economy, and throughput of SNPs detection in the finless porpoise.

选择2个已知的江豚SNPs，将扩增产物按基因频率制备成0-50%的11 个DNA池，分别用于直接测序和DHPLC分析，以探讨两种方法检测SNPs时的效率及制备DNA池时对基因频率的要求。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。