丙氨酸

Sitafloxacin epimers were separated by capillary zone electrophoresis using γ-cyclodextrin and D-phenylalanine as chiral selector.

以γ-环糊精和D-苯丙氨酸为手性选择剂，采用毛细管区带电泳成功地分离了新型抗菌素西他沙星差向异构体。

A baseline separation of Sitafloxacin epimers was achieved with a background electrolyte of 10 mmol/L KH2PO4-K2HPO4 (pH 4.5), 10 mmol/L CuSO4, 20 mmol/L γ-CD and 10 mmol/L D-Phe. The linear range for Sitafloxacin was 32-400 mg/L (0.996). The relative standard deviations of migration time and peak area were less than 1.9% and 3.8% respectively.

实验结果表明，添加剂的种类和浓度是影响西他沙星手性分离的重要因素，只有当D-苯丙氨酸、铜离子和γ-环糊精同时存在并达到一定浓度时，西他沙星差向异构体在毛细管电泳中才具有良好的分离效果。

Isolated PBMC were separated from 5 mL venous blood in asepsis condition. NF-κB stimulator, NF-κB inhabitor and astragalus were added into the different tubes of PBMC, respectively.

抽取所有研究对象5 mL静脉血并提取PBMC，分别加入NF-κB刺激剂IL-1β、NF-κB抑制剂对甲苯磺酰－L-苯丙氨酸氯甲基酮及黄芪注射液。

The experiment results indicate that higher phase splitting speed and extraction factor can be achieved when low-carbon alcohols such as n-butanol are used as organic solvents; by using five different N-carbobenzyloxy-L-amino acids as chiral ligands that are formated with Cu(superscript 2+) or Ni(superscript 2+), it is found that as a ligand, Z-Phe has a low extraction factor, while Z-Hyp, Z-Pro, Z-Glu, Z-Val have higher extraction factors, and among these, Z-Val has the highest distribution coefficient; pH value of extractant, when near to the PI of phenylalanine, helps to improve extraction resolution effect; temperature has no obvious effect on the resolution result.

结果表明：以低碳醇类正丁醇作有机稀释剂，所用5种N-苄氧羰基氨基酸（分别为Z-Phe、Z-Hyp、Z-Pro、Z-Glu、Z-Val）与Cu(上标 2+)或Ni(上标 2+)形成手性配位体后，以Z-Val作手性配体，萃取相pH值接近苯丙氨酸等电点时，萃取拆分效果最佳。

First, L- phenylalanine methylester hydrochloric acid was obtained by using classical method of ROH-HCl which has superiority with high yield and inexpensive raws.

具体制备工艺路线为：首先，采用经典的ROH-HCl法制备L-苯丙氨酸甲酯盐酸盐，该法的优点是原料经济、操作简便、产率高。

Using acetone as a photosensitizer,and N3· as an oxidant by pulse radiolysis method,the induced oxidation of cyclic-Phe-His in aqueous solution has been also reported in this paper,results similar to the photoionization of cyclic-Phe-His have been found.

而具有亲电子性的丙酮能在该环肽的苯丙氨酸残基的苯环上抽取电子，形成320nm和410nm的特征吸收峰，求出了自由基的有关动力学参数，并用脉冲辐解动态吸收光谱法印证了上述结果。

BH loading tast and urine pterin analysis can be used as differental diagnosis methods for classical PKU and BH deficiency.

血苯丙氨酸浓度在口服BH后无明显变化，尿喋呤谱分析基本正常的患儿诊断为经典型苯丙酮尿症

Fermentation ;; Antineoplastic Agents ;; Carbon ;; Solanum tuberosum ;; Peptones ;; Alanine ;; Starch ;; Anaphase

发酵；；抗肿瘤药；；碳；；马铃薯；；胨类；；丙氨酸；；淀粉；；后期

The elicitor induced tobacco resistance against brown sport with the highest effect of 54%.After spraying of the elicitor,activities of phenylanine ammoni a lyase,peroxidase and polyphenoloxidase were increased in vary ing degrees.

烟草幼苗经激发子处理后，苯丙氨酸裂解酶、过氧化物酶和多酚氧化酶活性有不同程度的增加，病程相关蛋白也有量的积累，在诱导后第10d产生的蛋白量最多。

In the batch reaction with high ratio of substrate to catalysts, the rate ?controlling step was determined by measuring the concentration variation of produced L-alanine in solution.

在近似无限浴的条件下，通过测量间歇拆分反应产生的L-丙氨酸的浓度变化规律，判断反应过程中的速率控制步骤。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新