查询词典 esterified

Semen Ziziphi Spinosae oil was extracted with n-hexane,and the extract was saponified and esterified.

酸枣仁油用正己烷提取、经甲酯化法处理，GC-MS联用对其脂肪酸组成成分进行了分析和鉴定。

Penicillin G sulphoxide is esterified by N,N′-bistrimethylsilyl urea under the temperature 55℃ with a molar ratio 2.5∶1 between BSU and sulphoxide,and the ester obtained is ring-enlarged in the toluene under refluxing with the exist of catalyst-pyridine acetyl bromide.

摘 要 本文在制得青霉素G亚砜的基础上，完成了重排酸的扩环反应，重点探讨了扩环反应的最优化条件。青霉素G亚砜与N，N′-双脲在55℃下反应，得到亚砜的酯化物。

As superplasticizer , a series of comb-shaped copolymers of polycarboxylic acid were synthesized by polyoxyethylene allyl methyl diether, maleic anhydride, and styrene with different initiators,and esterified with PEO-n.

以聚氧乙烯甲基烯丙基二醚、顺丁烯二酸酐、苯乙烯等为共聚单体，采用不同引发剂，合成了一系列聚羧酸型梳状共聚物超分散剂，并以PEO n单酯化得酯化产物，研究了共聚物的结构、组成、添加量等对水泥粒子分散性能的影响。

The acid anhydride is firstly isomerized and esterified with castor oil on 12-hydroxyl of eastor oil acid to improve the rheological and tribological characteristic.

详细考察了合成酯和植物油的烷链结构对流变性能和摩擦特性的影响。

The effects of solid volume loading on the rheological behavior and consolidation of alumina suspensions containing esterified starch and the microstructure and properties of the so-formed green bodies are studied.

探讨了固相含量对淀粉-Al2O3悬浮浆料的流变特性、固化行为、成型坯体显微结构和性能的影响。

The result suggested that,with the increased displacement degree,the four properties mentioned above were all improved . There-fore,phosphate-esterified starch has great potential for use as food film , in food preservation and in ice-cream and sausage making and so on.

结果表明，随取代度增高，磷酸酯淀粉糊液透明度、冻融稳定性，抗酸性及成膜性均增强，在食品膜、保鲜、冰淇淋、香肠等方面的应用潜力十分广阔。

This paper presents a new method for analysis of total organic acids in wine as follows:organic acids in wine were separated and enriched with strong anionexchange resin and were esterified directly on the resin with BF 3diethylether and alcohol for 60min under the temperature of 90℃.

界面衍生化气相色谱法测定葡萄酒中总有机酸⒇邓丛蕊（济南大学化学系济南250002）提要利用离子交换树脂分离、富集葡萄酒中总有机酸并直接在树脂界面上乙酯化，结合气相色谱／质谱法，鉴定并分析了葡萄酒中21种有机酸。

Thermal behavior of RSRF was not affected by ultrasonic treatment, but it remarkably changed in the esterified RSRF. The Differential Scanning Calorimeters curves revealed the maximal thermal decomposition peak of cellulose and lignin in RSRF were disappeared, which reflected characters of RSRF were modified through esterification.

差示扫描量热法研究结果表明，超声波处理对RSRF的热性能没有影响，但酯化改性使RSRF的纤维素与木质素最大分解峰消失，主要反映为酯的性质，且热稳定性增强。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。