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The effects of the amount of catalyst, the amount of acetic anhydride, reaction time, and addition of solvents etc. on the acylation reaction were investigated.

考察了催化剂用量、乙酐用量、反应时间和溶剂的加入等因素对该酰化反应的影响。

CdS nanoarods have been synthesized by using Cetyltrimethyl Ammonium Bromide as the soft template under γ-irradiation through the reaction of cadmium sulphide (CdSO4·8/3H2O) and thiacetamide in acidic condition for pH value of 3. The physical and chemical properties and the structure of CdS nanorods were characterized by XRD, UV-Vis, SAED, TEM and PL.

在pH=3的酸性条件下,以硫酸镉和硫代乙酰胺为反应前驱体,采用十六烷基三甲基溴化铵自组装形成的管状胶束为模板,通过γ射线辐照法成功合成了CdS纳米棒,并通过XRD、UV-Vis、SAED、TEM和PL等技术对反应中间产物及最终产物进行了表征。

The acetyl-CoA carboxylase is the rate-limiting enzyme of fatty acids synthesis.

乙酰辅酶A羧化酶催化脂肪酸合成的第一步,是脂肪酸合成的限速酶。

To evaluate the effect of deacetylation degree on the gelation behavior of thermosensitive chitosan-β glycerol phosphate disodium salt pentahydrate system and to compare their rheological behaviors before and after gelation.

目的 研究壳聚糖(chitosan,CH)脱乙酰度(degree of deacetylation,DDA)对CH-甘油磷酸盐温控体系凝胶化行为的影响,同时比较其在凝胶形成前后的流变学行为差异。

Hepatic sinusoid capillarization plays an important role in occurrence of portal hypertension. The fenestra of endothelial cells in hepatic sinusoid reduces and the diameter of fenestra decreases. The formation of basement membrane impaires the substance exchange between blood and hepatic cells,which results in oxygen deficiency, metabolic product accumulation and cell necrosis.

肝窦毛细血管化在硫代乙酰胺诱导的肝硬化门脉高压发生中起重要作用,肝窦内皮细胞窗孔减少并减小,内皮细胞下基底膜形成使肝细胞与外界物质交换减少,导致细胞缺氧、代谢产物聚集,肝细胞坏死,最终导致门脉高压的发生。

The acetated and hydrogenated urushiol dimer has been separated,and studied by hetero-J resolved 2D-NMR,homo- and heteronuclearchemical shift correlation 2D-NMR and long-range coupled chemicalshift correlation 2D-NMR.The results show that the urushiol dimerare most diphenyl and alkyl phenyl ether structures.Furthermore,IR and MS data also has conformed this structures.

本文将酶催化预聚后的生漆,催化加氢后,乙酰酯化,再进行离心旋转薄层层析,分离得到二聚体主要组分,用异核J分辨谱,同核化学位移相关,异核化学位移相关,远程偶合异核化学位移相关等2D—NMR技术,全面研究了其结构,得到了联苯型和烷基芳醚型聚合结构的结论。

In the bromization reaction of LA,the reaction conditions such as reaction temperature,drop time of Br_2 and reaction medium were optimized.

以来源于生物质资源的乙酰丙酸为原料,通过改进的溴化和水解反应合成了5-HLA。

In this chapter, the folate-EDA was covalently connected with heparin- campotothecin by carbodiimide activation to get a folate-heparin-campotothecin conjugate.

以乙二胺作为连接臂,通过酰胺键将氨基化的叶酸与肝素-喜树碱复合物连接起来,制备了一种叶酸偶联的肝素-喜树碱复合物。

AIM: To investigate the effect of PD98059, a specific repressor of extracellular signal regulated kinase1/2 (ERK1/2), on the proliferation of the murine lymphocytes. METHODS: Lymphocytes were isolated from lymphoid nodes of BALB/c mouse. After stained with carboxy fluorescein diacetate, succinimidyl ester, the cells were stimulated with polyclonal activators, concanavalin and phorbol 12,13 dibutyrate plus ionomycin.

分离小鼠淋巴结细胞,藉羧基荧光素乙酰乙酸染色,用多克隆刺激剂刀豆A蛋白或者佛波醇酯加离子霉素刺激,以流式细胞术分析PD98059对淋巴细胞增殖的影响;利用碘化丙锭染色分析PD98059对细胞周期的影响。

Objective To investigate the alterations in activity of N-acetyl-β-glucosaminidase in experimental hepatic fibrotic rats.

目的 研究肝纤维化大鼠模型N-乙酰-β氨基葡萄糖苷酶活性的变化及与羟脯氨酸和透明质酸的相关性。

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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

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