乙酸

Benzyl acetate was synthesized from acetic acid and benzyl alcohol as raw materials with phosphotungstic acid as catalyst.

介绍了以冰乙酸和苯甲醇为原料，采用磷钨酸作催化剂合成乙酸苄酯的方法，考察了反应物醇酸摩尔比、催化剂用量、带水剂用量、反应时间、带水剂品种、催化剂重复使用对酯化率的影响。

The distillation column with a single photochlorination reactor was built in this paper, which is used in the laboratory study. In light initiation, the semi-continuous operation was applied to study the influence of the chlorine flow, the reflux and the height of the packing on photochlorination of acetic acid. Crude MCA with a purity of 90% or more was attained and the feasibility of this technology was proved.

本文建立了适合实验室研究的背包式光氯化反应精馏耦合装置，采用半连续操作的方法，在光引发条件下，考察了氯气流量、回流量和填料高度对乙酸光氯化反应的影响，得到了含量达90％以上的氯乙酸粗品，证实了工艺的可行性。

The presumption that new technology about distillation column with a single reactor can be used in photochlorination of acetic acid is first proposed in this paper. The fact that reaction distillation has obvious advantages in the number of theoretically perfect trays and energy consumption was obtained by theoretical analysis between the coupling of reaction and distillation and the independent operation, which lays a theoretical foundation on the application of the distillation column with a single reactor in photochlorination of acetic acid.

本文首次提出了将背包式反应精馏耦合技术应用于乙酸氯化反应的设想，通过对反应精馏耦合和反应精馏独立操作两种情况进行理论分析，发现反应精馏耦合在理论板数、能耗方面均具有明显优势，因而为背包式反应精馏应用于乙酸光氯化反应奠定了理论基础。

This further indicated that when the acetic acid compound existed it could slow the growth rate of the particles of polysilicic acid, but total species distribution and its transformation model of polysilicic acid did not change.

乙酸化合物的存在，能够有效减缓硅酸溶液中聚硅酸颗粒物的生长速度，但聚硅酸的总体形态分布与转化规律的模式并没有因为乙酸的存在而发生根本的改变。

M treatment materials, and also tartaric acid and no maleic acid detected in G. v treatment materials. Inoculation also increased the content of organic acid secretion (increased by 19.80～56.87 mg/kg) of trifoliate root, and the application of AlPO4 greatly increased organic acid content (increased by 20.06～21.84 mg/kg); uninoculated plant root secreted a bit of organic acid; Mycorrhizal poncirus trifoliata seedlings excreted malic acid (42.87%), citric acid (39.22%) and oxalic acid (12.06%).

接种AM真菌的根系分泌的有机酸种类与对照有所不同，未接种处理枳分泌的有机酸有草酸、苹果酸、乳酸、乙酸、顺丁烯二酸和柠檬酸等6种，而接种G.m的则检测到草酸、酒石酸、苹果酸、乳酸、乙酸、柠檬酸、丁二酸等7种，G.v处理的检测到酒石酸，接种处理均未检测到顺丁烯二酸；接种丛枝菌根真菌增加了枳根系分泌有机酸的量比未接种处理增加19.80～56.87 mg/kg，且施用AlPO4后有机酸含量显著增加(增加20.06～21.84 mg/kg；未接种植株根系仅分泌少量有机酸；接种植株根系分泌的有机酸以苹果酸(42.87%)、柠檬酸(39.22%)和草酸(12.06%)为主。

And found root exudates have the promotable effect on the activity of IAAoxidase of cucumber and squash,.

在对其生理生化特性的研究中发现，根系分泌物显著的促进黄瓜和南瓜体内吲哚乙酸氧化酶的活性，从而降低其体内吲哚乙酸的水平，抑制其生长发育；根系分泌物还显著抑制受体淀粉酶的活性，这种抑制性随浓度升高而增加，通过影响黄瓜和南瓜体内的能量转化来影响其正常生长。

The effect of different ratios of propionic/acetic acid on the metabolism of long-term cultivated GAO was investigated.

在3个SBR反应器（即SBR-A，SBR-C和SBR-E）中，以3种不同比例的丙酸/乙酸中长期驯化活性污泥使之富集聚糖菌，对丙酸/乙酸对聚糖菌的长期和短期代谢的影响进行了研究。

Results showed that B3(IBA+NAA, 300mg/L+300mg/L) was the best treatment in quantity and length of new roots, rate of radication and survival, distributing of roots length; Treatment B4(IBA+NAA, 500mg/L+500mg/L) took the second place; The following treatments in turn was D3 (NAA+VB1+cane sugar, 100mg/L+80mg/L+2%), D4(NAA+VB1+cane sugar, 300mg/L+80mg/L+2%), B2(IBA+NAA, 100mg/L+100mg/L), B1(IBA+NAA, 50mg/L+50mg/L).

结果表明：在生根数量，生根长度，根长分布及成活率和生根率上以处理B3(IBA+NAA，300mg/L+300mg/L)最好，其次是处理B4(IBA+NAA，500mg/L+500mg/L)。然后是处理D3（萘乙酸+维生素B1+蔗糖，100mg/L+80mg/L+2%）、D4（萘乙酸+维生素B1+蔗糖，300mg/L+80mg/L+2%）、B2(IBA+NAA，100mg/L+100mg/L)、B1(IBA+NAA，50mg/L+50mg/L)。

Especially , the rearrangement reaction of converting styrene oxide to phenylacetyldehyde were investigated. In this paper, we also studied the method of preparing SO42-/TiO2 by vitriolic titanium boiling regurgitant hydrolyzation and applications of SO42-/TiO2 in the preparation of iso-amyl acetate.

对环氧苯乙烷经分子重排反应制备苯乙醛进行了深入研究；本论文还用硫酸钛沸腾回流水解法制备了纳米SO_4~(2-)/TiO_2固体超强酸粉末，并应用于冰乙酸与异戊醇酯化合成乙酸异戊酯的反应。

RESULTS: 12 compounds were isolated and identified as aurantiamide acetate (1), aurantiamide benzoate (2), physcion (3), scopoletin (4), vanillin (5), coniferyl aldehyde (6), syringaldehyde (7), syringic acid (8), luteolin (9), apigenin (10), azelaic acid (11), dotriacontanic acid (12), respectively.

结果：从羊耳菊全草的氯仿和乙酸乙酯部分共分离得到12个化合物，分别鉴定为橙黄胡椒酰胺乙酸酯(1)，橙黄胡椒酰胺苯甲酸酯(2)，大黄素甲醚(3)，东莨菪亭(4)，香草醛(5)，松柏醛(6)，丁香醛(7)，丁香酸(8)，木犀草素(9)，芹菜素(10)，壬二酸(11)，三十二烷酸(12)。

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。