乙酰

Methods:Use methods such as take off protein,calcium,colour,deacetylate and purification to prepare chitosan to study deacetylate degree,molecular weight and other characters of chitosan,then compare with infrared spectrum of bio-chemical chitosan on market.

用脱蛋白、除钙、脱色、脱乙酰基、纯化等方法制备壳聚糖，研究其壳聚糖的脱乙酰度、分子量等性质，并与市售生化级壳聚糖的红外光谱进行比较。

objective:with the local lobster shell as the raw material,we inquire into the abstraction and preparation of chitin and chitosan to develop a new raw material resources for chitosan.methods:use methods such as take off protein,calcium,colour,deacetylate and purification to prepare chitosan to study deacetylate degree,molecular weight and other characters of chitosan,then compare with infrared spectrum of bio-chemical chitosan on market.results:the chitin and chitosan obtained from lobster shell are 14.8% and 8.9%, respectively.

目的：以地产龙虾壳为原料，探讨其甲壳素的提取和壳聚糖的制备方法，以开发壳聚糖制备的新原料资源。方法：用脱蛋白、除钙、脱色、脱乙酰基、纯化等方法制备壳聚糖，研究其壳聚糖的脱乙酰度、分子量等性质，并与市售生化级壳聚糖的红外光谱进行比较。

Secondly, 2-trichloroacetylpyrrole were synthesized in the diethyl ether anhydrous at room temperature.

以无水乙醚为溶剂，摩尔比为1：1的N-烷基吡咯和三氯乙酰氯，在常温下进行反应，得到2-三氯乙酰基吡咯。

Employing acetyl chloride as the electrophile afforded the β-acetoxyvinyl-γ-butyrolactone 3 as the product, which provided an experimental evidence to the mechanism involving the palladium enolate intermediate.

使用乙酰氮作为亲电试剂得到了β－乙酰氧基烯基－γ－丁丙酯3，这一结果为烯醇钯中间体的机理提供了一个实验证据。

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。

It is capable of degrading peptidoglycan, specifically breaking the beta-1,4 glucosidic bonds between N-acetylglucosamine and N-acetylmuramic acid.

我们证明该基因具有降解肽聚糖的功能，即可破坏N-乙酰葡糖氨与N-乙酰胞壁酸之间的beta-1，4糖苷键。

This study was based on the soy protein isolates as raw materials. Chemical modification( acetylation,succinylation ,phosphorylation and urea modification) of SPI were used to improve adhesive strength and water resistance of SPI-based plywood adhesives. Then two modified ways combined were applied to SPI and their adhesive properties were studied. This research also characterized the thermal and adhesive properties of two major soy protein components 7S conglycinin and 11S glycinin after urea modification. Finally, the mechanism of improving SPI's adhesive properties was preliminarily discussed.

本文是以大豆分离蛋白为原料，进行SPI的化学修饰以提高其胶粘特性；采用了磷酸化试剂三聚磷酸钠、乙酰化试剂乙酸酐、琥珀酰化试剂琥珀酸酐和有机溶剂尿素修饰和变性SPI，研究修饰和变性后的SPI作为木材胶粘剂的胶粘性与耐水性，同时研究了两种方法复合修饰SPI对其粘度、胶粘强度和耐水性的影响；然后以SPI为原料，进行7S和11S球蛋白的提取以及胶粘特性的研究，对SPI起胶粘特性的机理进行了初步探讨。

In this review, we discussed the consequences of inhibiting histone deacetylases in cycling versus non-cycling cells, in light of the dynamics of histone acetylation patterns with a specific emphasis on heterochromatic regions of the genome.

本综述通过讨论HDACIs对周期和非周期细胞中组蛋白去乙酰化酶的抑制结果，来阐明组蛋白乙酰化模式的动力学特征，特别是对基因组异染色质的作用。

The construction process includes the following steps: constructing recombinant plasmid containing phhA and phhB; transforming the recombinant plasmid to hygrophilous aeromonad; and screening recombinant hygrophilous aeromonad with the recombinant plasmid.

该重组菌中含有β-酮硫解酶基因phbA和乙酰乙酰辅酶A还原酶基因phbB。其构建方法包括以下步骤：1构建含phbA和phbB基因的重组质粒；2转化该重组质粒到嗜水气单胞菌中；3筛选出含有重组质粒的重组嗜水气单胞菌。

After basal anesthesia, ilioinguinal/iliohypogastric nerve blockades was administed in nerve block group, paracetamol group received rectal paracetamol, control group had not any medication.

各组患儿行基础麻醉后，神经阻滞组行患侧髂腹股沟／髂腹下神经阻滞；对乙酰氨基酚组经肛门塞人直肠对乙酰氨基酚栓剂；对照组未予任何药物镇痛。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。