查询词典 deacetylation

The structure of products was characterized by means of infrared spectra, wide-angle X-ray diffraction and differential scanning caloriimetry and the effect of deacetylation in course of konjac glucomannan carboxy methylation was analyzed.

运用红外光谱、广角X-射线衍射和示差扫描量热法表征产物结构并探讨脱乙酰基对KGM羧甲基改性的影响。

Synthesis process of 2,6-dichloro-3-methylaniline was investigated 3-methylaniline was first N-acetylated with acetic anhydride,then treated with chlorosulphonic acid and ammonia yielding the 2-methyl-4--benzenesulfonic amide,which wasin turn deacetylated,chlorinated and hydrolyzed to the title compound.Hydrochloric acid was used instead of sodium hydroxide in deacetylation and sodium chlorate instead of hydrogen peroxide as oxidant in chlorination.

合成工艺2，6-二氯-3-甲基苯胺调查3-甲基首次N-乙酰与醋酸酐，然后与氯磺酸和氨产量 2-甲基-4--苯磺酰胺基，而擅转乙酰，氯化和水解的标题compound.hydrochloric酸代替氢氧化钠乙酰氯酸钠代替双氧水为氧化剂，加氯。

Chitooligosaccharides was obtained from crustaceous materials, such as shrimp and crab by deacetylation and degradation, and it had a wide range of applications in medicine.

壳寡糖是由虾蟹壳等甲壳类物质通过脱乙酰基与降解而得到的寡糖，它在医药领域有广泛的应用。

The essence of deacetylation reaction of chitin was the hydrolysis of N-alkyl ethanamide.

甲壳质脱乙酰化反应其本质是N-烷基乙酰胺的水解。

Silenced chromatin, largely heterochromatic,contains a number of restrictive histone modifications, such as meH3K9, meH3K27, meH4K20,and histone deacetylation, which allow for a higher-order packing and inaccessibility to transcription factors.

沉默的染色质，大部分的是异染色质，包含大量的限制性的组蛋白修饰因子，例如meH3K9， meH3K27， meH4K20和组蛋白的脱乙酰作用，这些因子需要高度包装和不易转录因子。

Background: Peripheral nerve injury is common and serious in clinically. According to the nerve regeneration theory of nerve tropism, neural regeneration room became hot spot for treating nerve injury.Then keep distance between the proximal and distal severed stumps with different conduits and others substance which can promote nerve regeneration ,the room can provid a favourable environment for nerve regeneration. a series of empirical study indicated immunosuppressant FK506 can promote nerve regeneration, chitosan is polysaccharose natural biomaterial , Chitosan is prepared by the N-deacetylation of chitin.

背景：周围神经损伤在临床上比较常见，根据神经趋向性再生理论，神经再生室成为神经损伤治疗研究的热点，即在神经断端之间留出一定的间隙，并套以不同材料的鞘管及其它促进神经再生的物质，为周围神经再生创造良好的再生环境，一系列实验研究表明免疫抑制剂FK506有促进神经再生的作用。

From these experiments, the optinum condition was chosen. The comparison of the reactional results of different degree of deacetylation chitosan with those of N-substitute chitosan und...

在相同条件下，比较不同脱乙酰度甲壳胺及N－取代甲壳胺的接枝聚合反应结果，表明：甲壳胺中氨基参与了接枝聚合反应的引发过程。

The comparison of the reactional results of different degree of deacetylation chitosan with those of N-substitute chitosan under the same reactional condition has demonstrated that the amino groups of chitosan took part in the initiation process.

在相同条件下，比较不同脱乙酰度甲壳胺及N－取代甲壳胺的接枝聚合反应结果，表明：甲壳胺中氨基参与了接枝聚合反应的引发过程。

The improved method of konjac glucomannan carboxy methylation was proposed in this paper according to the effects of deacetylation. Carboxymethyl KGM were synthesized by blending KGM with etherification agent first and then basifying and catalyzing in ethanol. Basifying first and then etherifying prepared traditional carboxymethyl KGM.

针对脱乙酰基的这种影响进行羧甲基化方法的改进，在乙醇介质中先混合醚化剂，再进行碱化催化反应制备羧甲基魔芋葡甘聚糖，并通过与传统的先碱化再醚化的KGM羧甲基改性方法比较，达到乙酰基脱出顺序上的不同。

Glycosidic bond of chitin could be cut off selectively in the degradation of chitin and soluble chitin of part deacetylation could be obtained.

甲壳质的酶法降解，可选择性地切断甲壳质的β-1，4-糖苷键，可得到部分脱乙酰化的可溶性甲壳质。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。