酰化

It also widespread exists in the pericellular membrane of some fungus,insects,and algae,and in the cell walls of the advanced plant.The chitosan is the result of chitosan's dis-ethanoyl.

通过将甲壳素脱乙酰化可制得壳聚糖，壳聚糖是天然糖中唯一大量存在的碱性氨基多糖，其降解产物低分子量壳聚糖更是具有许多特殊的物理化学性质和生理功能。

A series of neutral organophosphorus compounds including trialkylphosphates,dialkyl alkylphosphonate,alkyl dialkyI phosphinate,trialkyl phosphine oxide andalkyl esters of phosphorus acid have been separated by reversed phase chromatographyon acetylated paper.

一般中性磷化合物(磷酸三烷基酯、烷基瞵酸二烷基酯、二烷基瞵酸烷基酯、氧化三烷基瞵、亚磷酸二烷基酯及亚磷酸三烷基酯)皆能借乙酰化滤纸为固定相，进行纸上层析分离鉴定。

Some aqueous catalysis systems have been applied in the industrial production of butyl aldehyde by propene hydroformylation.

其中水溶性催化剂体系已经用于丙烯氢甲酰化反应制备丁醛的工业化生产，然而，长链烯烃在含有催化剂的水相中溶解性较差，反应速率较慢。

The antiarrhythmic drug ibutilide fumarate was synthesized from aniline by methylsulfonylation, Friedel Crafts reaction, condensation, reduction and salification with an overall yield of 44%.

以苯胺为起始原料，经甲磺酰化、傅克反应、缩合、还原和成盐反应等 5步合成了抗心律失常药富马酸伊布利特，总收率 4 4 %。

The stereochemical effect of the chiral amino acid residues on the formation of penta-coordinate phosphorus intermolecular mixed carboxylic-phosphoric anhydride from N-phosphorylamino acids was studied with density functional theory calculations at B3LYP/6-311G level.

用密度泛函方法在B3LYP/6-311G水平上对N-磷酰化氨基酸生成五配位磷酸羧酸混酐反应中手性氨基酸残基侧链的立体化学效应进行了研究。

"We looked at the status of the histones and found surprisingly that thymoquinone increased the acetylation process," Dr.

&我们观察组蛋白的状态并且令人惊讶地发现百里香醌能增强乙酰化的过程& Dr。

In conclusion, the mechanism of differentiation and apoptosis in NB4, K562 cells induced by tributyrin may associate with its up-regulation of acetylated histone and p21(superscript WAF1) mRNA level.

TB诱导NB4、K562细胞发生分化和凋亡的机制与TB引起细胞组蛋白高乙酰化和继而上调p21(上标 WAF1)表达有关。

Laser confocal microscopy revealed the differentiating EPCs could uptake acetylated low density lipoprotein and ulex europaeus agglutinin-Ⅰ, which were stained as red and green fluorescence.

激光共聚焦显微镜鉴定乙酰化低密度脂蛋白、荆豆凝血素Ⅰ双染阳性的细胞为正在分化的血管内皮祖细胞。

Immunofluorescence assay was used to detect endothelial cell uptake and absorption acetylated low density lipoprotein and ulex europaeus agglutinin-Ⅰ. EPCs quantitative detection of surface markers was performed by flow cytometry: CD133, CD34 antigen expression and KDR.

通过免疫荧光法观察内皮细胞吸收乙酰化低密度脂蛋白和荆豆凝血素Ⅰ情况，流式细胞仪定量检测血管内皮祖细胞表面CD133、CD34和KDR抗原表达阳性率来鉴定血管内皮祖细胞。

Morphology of the EPCs was observed, and the growth curve of the EPCs was investigated. Surface antigens of the EPCs were analyzed by the flow-cytometer. The capability of intaking the acetylated low-density lipoprotein of the EPCs was detected using fluoresencent chemical method. The vasoformative capability and genetic stability of EPCs were cultured in matrigel, and examined by karyotype analysis.

观察培养细胞的形态，测定其生长动力学，采用流式细胞仪及免疫细胞化学方法检测其表型，应用细胞荧光化学法分析EPCs对乙酰化低密度脂蛋白(acetylated low-density lipoprotein， ac-LDL)的摄取功能，Matrigel上培养并检测其形成血管能力，染色体核型分析其遗传稳定性，裸鼠实验、软琼脂实验观察致瘤性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。