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Seven Schiff bases of N-(4-hydroxyphenylmethylene)-1-naphthylamine, N-(4-hydroxyphenylmethylene)-p-methoxyaniline, N-(4-hydroxyphenylmethylene)-benzylamine, N-(4-hydroxy-3-methoxyphenylmethylene) furfurylamine, N-(4-hydroxy-3-methoxyphenyl methylene)-p-methylaniline, N-(4-hydroxy-3-methoxyphenylmethylene)-p-methoxyaniline and N-salicylidene-4-aminoantipyrine were first synthesized by the one step solid phase reactions between aromatic aldehydes with phenolic hydroxyl and amines at room temperature without solvent.

分别以带酚羟基的芳醛与胺类反应,首次通过室温固相反应一步合成了N-(4-羟基苯基亚甲基)-1-萘胺、N-(4-羟基苯基亚甲基)-对甲氧基苯胺、N-(4-羟基苯基亚甲基)-苄胺、N-(4-羟基-3-甲氧基苯基亚甲基)糠胺、N-(4-羟基-3-甲氧基苯基亚甲基)-对甲苯胺、N-(4-羟基-3-甲氧基苯基亚甲基)-对甲氧基苯胺和N-亚水杨基-4-氨基安替比林7种Schiff碱,反应15min完成,产率均超过90%。

The results showed that:1 78 volatile constituents were identified in the oil,which were mainly caryophyllene,1,5,9,9-tetramethyl-1,4,7-cycloundecatriene,germacrone,eudesmol and furfural,etc.2 The aroma quality and intensity of cigarette were improved,irritation was reduced,and a...

结果表明:①满山红挥发油中共鉴定出78种挥发性成分,主要有石竹烯、1,5,9,9四甲基-1,4,7环十一碳三烯、杜鹃酮、桉叶醇和糠醛等;②该挥发油具有提高B2F和C3F等香气质和香气量,降低刺激性和改善余味的作用。

Physical and chemical properties, culturable bacterial population and phospholipid fatty acid profile of different casing soils at different mushroom cropping stages were investigated.

在双孢蘑菇栽培中,以传统蘑菇砻糠田泥覆土为对照,研究了不同泥炭比例覆土配方的理化性状、细菌生长量、双孢蘑菇菌丝生物量及其产量。

Under the optimal reaction conditions of 0.5MPa pressure, at 150℃, H2 gas flow rate of 5000 mLh^(-1) and liquid flow rate of 5.0mLh^(-1), the conversion of furoic acid, selectivity to methyl tetra-hydro-furan formiate and yield of methyl tetra-hydro-furan formiate can reach 99.0%, 98.2% and 97.2%, respectively.

结果表明:在0.5MPa,150℃,氢气流速5000mLh^(-1),液体流速5.0mLh^(-1)(氢油比为50)时,呋喃甲酸转化率为99.0%,四氢糠酸甲酯的选择性98.2%,产率97.2%。

Amount of 2 furaldehyde were increased with the increase of acetic acid aqueous solution concentration from 0 to 3%,and almost constant from 3% to 30%.

当醋酸浓度从0至3%时,糠醛的收量随着增加,但是当醋酸浓度从3%增至30%时,其收量却几乎不变。

Results showed that during the carbonization of furfuralcohol resin C-O bond rupture of pentacyclic ring, took place firstly, bringine C-H bond rupture.

结果表明:糠醇树脂炭化裂解过程首先是五员杂环内的碳氧键发生断裂,引起碳氢键断裂。

Ordered mesoporous carbon was successfully prepared using siliceous MCM-48 as template, p-toluenesulfonic acid as catalyst, and furfuryl alcohol as carbon source.

以纯硅MCM-48为模板、对甲苯磺酸为催化剂、糠醇为碳源成功制备了高度有序的中孔炭分子筛。

Ordered mesoporous carbon was successfully synthesized using siliceous MCM-48 as template,p-toluenesulfonic acidas catalyst,and furfuryl alcohol as carbon source by vapor depositon polymerization method.

以纯硅MCM-48为模板、对甲苯磺酸为催化剂、糠醇为碳源通过蒸汽沉积聚合制备了高度有序的中孔炭分子筛。

Furyl 3 buten 2 one is synthesized from furfural and acetone in water sodium hydroxide medium.

以呋喃醛为原料,在水-氢氧化钠体系中合成了糠叉丙酮,探讨了丙酮用量,氢氧化钠浓度对反应的影

ObjectiveTo investigate the changes of 5-HMF contents in Ligustrum lucidum Ait before and after processing.

目的研究女贞子炮制前后5-羟甲基糠醛(5-hydroxymethyl furfural,5-HMF)的含量变化。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。