酰化

Additionally, the quantum chemical study on the isomeriaation mechanism of the enol ester of 2-acyl-l,3-cyclohexanedione was performed, which was discovered by Yang when he synthesized the derivate of 2-acyl-l,3-cyclohexanedione.

第三部分工作是对杨定亚在合成2-酰基-1，3-环己二酮类化合物的衍生物时意外发现的烯酯异构化反应机理进行了研究。

They cationic monomer Acryloyloxyethyl ethyl trimethyl ammonium chloride and resource-rich, low price, low values of weathering burning coal as its main raw material, aqueous dispersion polymerization methods, through the weathered coal / cationic monomer in-situ polymerization in the international arena for the first time prepared by a high efficiency oil-bearing wastewater treatment agent; use of oil-field wastewater treatment, the waste slurry as raw material, has developed the world's first CWS dispersants and oil fields of the "three mining" using profile control plugging agent, in order to The high value of solid waste has opened up new avenues of applications; integration of related technologies, and open up for the oil field wastewater treatment, an annual output of 300 tons of sets of processes and devices for the first time realized the slop oil and drilling fluid back row of the industrialization of treatment .

他们以阳离子单体丙烯酰氧乙基三甲基氯化铵与资源丰富、价格低廉、燃烧值低的风化煤为主要原料，采用水介质分散聚合方法，通过风化煤/阳离子单体原位聚合技术，在国际上首次制备出高效含油废水处理剂；采用油田废水处理后的废弃物泥浆为原料，在国际上率先开发出水煤浆分散剂和油田"三采"用调剖堵水剂，为固体废弃物的高值化应用开辟了新途径；集成相关技术，开拓出针对油田废水处理、年产300吨的成套工艺和装置，首次实现了油田污油水和钻井返排液的工业化处理。

From 3-chloropropene bycondensation with sodium ethylate in ethanol to form 3-ethoxypropene followed by anti-Markovnikov addition with HBr inthe presence of benzoyl peroxide.

3-氯丙烯与乙醇钠在乙醇中回流制得3-乙氧基丙烯，继而在过氧苯甲酰存在下，与溴化氢经反马氏加成制得1-溴-3-乙氧基丙烷，总收率89。

Block-copolyimide film from pPDA/ODA-PMDA was studied by TEM, SEM, PLM, ultra-deep three-dimensional microscope, TMA, and WAXD, which showed that the extensile strength and modulus of b-PI film were higher than that of irregular copolyimide film. It was also revealed that there was a large amount of crystallite formed in b-PI film, which was mainly attributed to its chain structure: rigid pPDA-PMDA chains were easy to form crystal nucleus because of phase separation, based on which semi-rigid PMDA-ODA molecular chains began to crystallize.

以pPDA／ODA-PMDA型嵌段共聚酰亚胺薄膜为对象，借助TEM、SEM、PLM、超景深三维显微镜、TMA、WAXD等手段，研究结果表明：b-PI薄膜的拉伸强度、弹性模量均高于无规共聚酰亚胺薄膜；b-PI薄膜中形成了大量的微晶，这是由于刚棒状的pPDA-PMDA分子链段因相分离容易形成晶核，然后半刚性的PMDA-ODA分子链段以PMDA-pPDA为晶核进行晶体生长造成的，而且ODA-PMDA分子链的结晶和酰亚胺化反应基本上是同步进行的。

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。

Perfluoroguanidine can be prepared by the direct fluorination of dry ammeline with 5% fluorine at about -16℃.

全氟胍可以由于的三聚氰酰胺，用5％的氟在约－16℃直接进行氟化制得。

Perfluoroguanidine can be prepared by the direct fluorination of dry ammeline with 5% fluorine at about-16℃.

全氟胍可以由干的三聚氰酰胺，用5％的氟，在约－16℃直接进行氟化而制得。

The calixarenes used as PTC in the fluorination of tetrachlorophthahaloyl chloride to obtain dimethyl tetrafluoroterephthalate were studied in this paper.

研究了杯芳烃在四氯对苯二甲酰氯氟化制备四氟对苯二甲酸二甲酯反应中的相转移催化作用，发现以杯芳烃作相转移催化剂使产品收率得到了明显提高。

According to several years practice, comprehensively sum up measures of forcing culture technology of scale and dwarf on potted Bougainvillea as: a propagation of cuttage, which choose a mixture of 50%peat, 33% vermiculite and 17 sharp sand as cutting soil, and choose a semi-wooden shoot cut into 5~10cm length with 2~3 leaves as cuttings then touch 1% AA root powder, is lower cost and higher survival rate than that of tissue culture; Bougainvillea growth can be efficaciously regulated by pruning and using 2~5g/L PP333; bougainvillea can be induced to flowers by spraying 2.5~4.0g/L B9 and administering no more 11 hours daylight every day continuously; the florescence can be more prolonged about 20 days by spraying 50mg/L NAA while selling; and prevention and cure of pest and disease, etc.

根据多年的生产实践，从科学育苗、栽培管理、售前处理和病虫害防治等方面综合总结了叶子花的规模化矮化促成生产技术措施：选择泥炭土、蛭石和黄沙按3：2：1比例混合均匀的扦插基质，采用半木质化当年生枝条，剪成5~10cm长的2~3叶节一段，沾染1%自制生根粉的扦插育苗较组培育苗成本低，成活率高；结合修剪用2~5g/L的多效唑进行叶面喷洒能有效控制生长，矮化植株；选择2.5~4.0的丁酰肼叶面喷洒和每天保持不多于11h的短日照处理，能有效促进开花；销售前全株喷洒脱50mg/L NAA可延长花期20天左右；整个生产过程加强肥水管理、温湿度控制和环境清洁能有效防治病虫害发生。

METHODS: With formamide as dispersing agent, agarose was sulfated with the method of chlorosulfonic acid-pyridine.

以琼脂糖为原料，甲酰胺为分散剂，通过氯磺酸吡啶法制备了硫酸酯化琼脂糖。

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。