醋酸

The pigment in colored cotton fibers was extracted by methanol at room temperature. The results of color reactions HCl-Mg reaction, NaBH4 reaction, NaOH reaction, FeCl3 reaction and Pb(Ac2 reaction of the pigment extractive showed that the pigment extracted by methanol was flavone or flavonol with two adjacent hydroxide groups (Table 2, Fig. 1). The results of UV spectral analysis further proved that the pigment extracted by methanol from brown fiber belonged to flavone with two adjacent hydroxide groups in B ring, and that from the green fiber contained not only flavone but also flavonols with two adjacent hydroxide groups both in A ring and B ring and indican replaced a hydroxide group at 3-site of A ring Fig.

通过盐酸－镁粉反应、四氢硼钠还原反应、碱反应、醋酸铅反应、氯化铁反应和紫外光谱吸收的分析表明，甲醇室温提取的棕色棉纤维色素可能是黄酮类化合物，B环上带有邻二酚羟基；甲醇室温提取的绿色棉纤维色素除黄酮类化合物外，还含有3-位羟基被糖甙化的黄酮醇类化合物，A、B环上都带有邻二酚羟基。

Oxindole, 3 methyloxindole, and indoxyl were identified as degradation metabolites of indole, 3 me...

氧化吲哚，3 甲基氧化吲哚和羰基吲哚分别为吲哚、3 甲基吲哚和 3 吲哚醋酸酯的代谢产物。

Prednisone acetate, methylcobalamin and VitB1 were simply given to the control patients, Patients in physical therapy group were treated by ultrashort wave, ultraviolet rays and inducing VitB1 by direct current in addition to drug therapy, On the basis of physical therapy, facial muscle movement training was added to comprehensive rehabilitation group, Assessment was measured before and the 30d after treatment with the system of Sunnybrook.

对照组单纯给予醋酸泼尼松、甲钴胶、VitB1治疗；物理治疗组在药物治疗同时给予超短波、紫外线和直流电局部导入VitB1治疗，综合康复组则是在物理治疗基础上再给予面部肌肉运动训练。

Aim To prepare lower degree of substituted starch acetate with cassava starch as material, acetic anhydride as acetylation reagent, sodium hydroxide as catalyst and sodium sulfate as gelatinization inhibiter.

目的 以木薯淀粉为原料，醋酸酐为乙酰化试剂，NaOH为催化剂，Na2SO4为膨胀抑制剂，制备了低取代度木薯淀粉醋酸酯。

Properties White powder, inodorous, non-toxic, soluble in dilute alkali solution, carbon disulfide, benzene, acetone, dichloromethane and a little soluble in chloroform, insoluble in alcohol, carbon tetrachloride and ethyl acetate.

性质 白色粉末。无毒、无味。溶于稀碱、二硫化碳、苯、丙酮和二氯甲烷，微溶于氯仿，难溶于乙醇、四氯化碳、醋酸乙酯。

Large dosage of shang lixio by oral or inunction can inhibit twisting reaction by acetic acid,but hasn't specific analysict effect,can inhibit inflammation of animal by croton seed.

无论口服还是外用，在大剂量时可抑制醋酸所致的扭体反应，但无特异性镇痛作用；在灌胃及炎症部位外用时，均可明显抑制动物巴豆油耳廓炎症及角叉菜胶所致后跖炎症。

The positive effects include invert of sugar into alcohol by yeast and invert of malic acid into lactic acid by lactobacillus etc.

摘 要：在整个葡萄酒的酿造生产过程中，不同的微生物起着不同的作用，酿酒酵母将糖转化成酒精，乳酸菌会将苹果酸转化成乳酸等，这些是正常的发酵过程；而醋酸菌会使葡萄酒发生酸败，产膜酵母会使葡萄酒起膜浑浊，霉菌会影响酒的风味等，这些是有害微生物的作用。

Taking 2% oxalic acid and 10% hydrochloric, mixture of 2% oxalic acid and 4% acetic acid as extraction agent, the content of vitamin C was determined by using iodometry.

方法］以2%草酸、10%盐酸以及2%草酸和4%醋酸的混合液作为提取试剂，对4种蔬菜中维生素C进行提取，并用碘量法测定蔬菜中维生素C的含量。

On the other hand, the transition state for direct displacement by acetate produces a dispersal of charge and should be only slightly affected by solvent ionizing power.

论 另一方面，转型期国家的直接位移醋酸生产分散费和应只稍受溶剂电离power。

This dissertation was designed to study heteto-phase grafting polymerization of vinyl acetate , maleic anhydride and VAC/MAH binary monomer system, irrespectively, with low density polyethylene film as substrate and benzophenone as photoinitiator. The purpose is to develop new and more effective methods to modify the surface and buck properties of polyolefines by studying the grafting mechanism of the system and exploring the characteristics of the grafting process.

本文主要以低密度聚乙烯膜为基体膜，以二苯甲酮为光引发剂，分别对醋酸乙烯酯、马来酸酐以及VAC/MAH的非均相接枝聚合反应进行了系统研究，以探讨相关的接枝反应机理、接枝反应过程以及接枝工艺的可行性，目的在于建立聚烯烃材料本体和表面改性新方法。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。