amino acid activation是什么意思

用法例句

Development of low-yellowing and hydrophilic amino polysiloxane;

低黄变和亲水性氨基聚硅氧烷的开发

Organic Synthesis Design of the Function and Application of Amino;

有机合成设计中氨基的功能及应用

Then BAPE-M was reduced into 4,4'-bis(4-amino phenoxy) diphenyl ether(BAPE) by hydrazine hydrate.

以4,4'-二羟基二苯醚、对硝基氯苯为原料,缩合制得4,4'-二(4-硝基-苯氧基)二苯醚,后采用水合肼还原得到4,4'-二(4-氨基-苯氧基)二苯醚(BAPE)单体;将其与PMDA(均苯四甲酸二酐)通过缩聚反应、热环化制备了一种多苯氧基型聚酰亚胺。

Determination of amino groups of ammonia plasma modified polypropylene surface by a staining method;

染色法定量检测氨气等离子体改性膜表面的氨基

Attenuated total reflectance Fourier transform infrared spectroscopy (ATR FTIR), X ray photoelectron spectroscopy (XPS) and ultra violet (UV) spectra demonstrated the success of amino groups grafting.

以H2 和N2 混合气体等离子体处理了聚丙烯微孔膜 ,采用扫描电镜观察了处理前后膜的形貌变化 ;真空全反射红外光谱和X射线光电子能谱证实在其表面接枝了大量活性氨基 ;用紫外光谱定量计算得知 ,所接枝的氨基浓度大约为 0 5μmol/cm2 。

A simple and convenient procedure for chemoselective protection of the amino groups of chitosan oligosaccharide was developed to prepare N-phthaloyl-chitosan oligosaccharide.

研究了一种简单的用化学选择性来保护壳寡糖氨基的方法,用于制备N-邻苯二甲酰化壳寡糖,这种可溶性N-保护壳寡糖前驱体对壳寡糖进一步进行可控化学修饰非常重要。

The characteristics of difunctional modified polysiloxane,such as amido and polyether modified polysiloxane,amido and amid modified polysiloxane,amido and long chain alkane modified polysiloxane,epoxy and polyether modified polysiloxane,carboxy and long chain alkane modified polysiloxane were introduced,their synthesis process,application were described,and their prospects were predicted.

介绍了氨基和聚醚改性聚硅氧烷、氨基和酰氨基改性聚硅氧烷、氨基和长链烷烃改性聚硅氧烷、环氧基和聚醚改性聚硅氧烷及羧基和长链烷烃改性聚硅氧烷等双官能基改性聚有机硅氧烷的特性 ,简述了合成过程及应用工艺 ,并对其前景进行了预测。

Both the protection and deprotective group methods for the amino-group on side chain of a new N-pivot lariat crown ether were studied comparatively.

研究了一种新的氮支套素冠醚侧链上氨基的保护和脱保护基方法，结果表明，由过量乙二胺与对甲苯磺酰氯反应得到的单保护乙二胺（Ｎ－对甲苯磺酰基乙二胺４ａ），经Ｎ－烷基化环化反应，然后在氢化铝锂存在下脱除保护基，即可制得最佳产率的Ｎ－（２－氨基已基）单氮杂－１２－冠－４（１）。