选择性的

Vardenafil has a similar duration of action to sildenafil, but is more potent and selective biochemically.

伐也有类似的止痛作用，以西地那非，但更强大和选择性公分。

When bromine was used to bromization reaction with 4-acetyl-guaiacol,the product bromide incompletely or super bromide partial,and the selectivity was poor.

使用单质溴与4-乙酰基愈创木酚进行溴化反应时，产物溴化不完全，或者局部过量的溴化，且选择性较差。

The selective behavior on the hydrogenation of maleic anhydride to succinic anhydride and γ-butyrolactone has been investigated by RuCl〓/PPh〓 catalytic system.

以RuCl〓／PPh〓为催化剂体系，考察了反应条件对顺酐均相加氢生成琥珀酸酐和γ-丁内酯的选择性影响。

Experimental principles, instruments and techniques of studies based on selectivity recognition of calix [4] arene derivative complexing with metal ions, especially to some transition metals were described.

阐述了杯[4]芳烃衍生物对金属离子特别是过渡金属离子选择性识别的实验方法和原理。

In addition, the reactions of the carbodiimide with alkanol and substituted phenol were studied firstly.

研究了4-酯基吡唑-5-碳二亚胺(Pyrazole-5-N=C=N-Ar)与NH_3，RNH_2，R_2NH和RNHNH_2成环反应的选择性。

In the presence of acetic acid and polyethylene glycol, anthracene reacted with ammonium ceric nitrate and sodium bromate to form anthraquinone.

在醋酸、聚乙二醇存在下，蒽与硝酸铈铵和溴酸钠反应生成蒽醌，聚乙二醇作为相转移催化剂可以提高反应的选择性。

The effect of chelerythrine, a selective protein kinase C inhibitor, on acetylcholine-induced current in PC12 cells was investigated by whole-cell clamping technique.

采用全细胞膜片钳技术研究蛋白激酶C选择性抑制剂白屈菜赤碱对PC12细胞上乙酰胆碱(30 μmol.L-1)诱发电流的影响。

Chelerythrine (20 μM), a potent selective PKC inhibitor, also blocked the facilitation of NMDA/glycine-induce currents by sar-SP.

蛋白激酶广谱拮抗剂H-7（5 μM）有效地阻断sar-SP对NMDA／glycine诱发电流的加强作用；同样地，PKC选择性拮抗剂chelerythrine（50 μM）也完全阻断这一易化作用。

Results showed that chloroacetic acid was the best reagent for esterification and the catalyst had satisfactory catalytic activity and selectivity.

实验结果表明，氯乙酸是最佳酯化剂，催化剂具有较强的活性及选择性。

The proposed method is also suitable for rapid determination of chlorogenic acid in complex matrices.

本方法选择性高、灵敏、快速，也适用于其它复杂体系中绿原酸含量的快速测定。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。