醛类

Results showed that the alkynol compounds were transformed to the corresponding alkyne aldehyde and acetylenic acid compounds containing conjugated system on the nickel anode, and hence the anodic oxidation reaction products were able to generate ultraviolet absorption.

结果表明，炔醇类化合物在阳极生成了相应的有共扼体系的炔醛类和炔酸类化合物，产生了紫外吸收。

Due to the hindered nature of the vinyl group in- 27 3 days were required to reduce the ozonide; fortunately, the reaction progress can be monitored easily by TLC.

同酯-27手，下一组黑胶转为经醛啉臭氧、用人的臭氧减少与甲基或产后大出血3、治疗后，在指定四氢呋喃对异构；醛类-29年联合摄制产量65%的两步。

With ester- 27 in hand, the vinyl group was next converted to the aldehyde moiety via ozonolysis, employing reduction of the ozonide with dimethylsulfide or PPh 3 , followed by treatment with DBU in THF to effect epimerization; aldehyde- 29 was produced in a combined yield of 65% for the two steps.

同酯-27手，下一组黑胶转为经醛啉臭氧、用人的臭氧减少与甲基或产后大出血3、治疗后，在指定四氢呋喃对异构；醛类-29年联合摄制产量65%的两步。

The autotoxicity is one of the mechanisms and obstacle effects occurred from continuous cropping.

自毒作用是连作障碍的发生机制之一，该作用主要是由有机酸、醛类芳香酸、香豆素、醌类、生物碱和类萜等植物次生代谢产物及其分解产物所引起的。

According to the structure and synthesis character of the geminal dinitro energetic plasticizers,the current situation about the synthesis,the property and application of geminal dinitro aldehyde acetals,esters and ether energetic plasticizers is summarized with 21 references.

从偕二硝基含能增塑剂的结构和合成特点出发，综述了偕二硝基缩醛类、酯类及醚类等含能增塑剂的合成、性能及应用研究现状。

Besides ethylic acid, bamboo liquid also contains alcohol, ester and aldehyde. When bamboo liquid is added to cosmetics and skin care, it causes no harm to the users.

竹酢液中除醋酸外，还含有醇类、酯类、醛类等多种纯天然成分，添加到美容护肤品中，对人体无副作用。

The SPC-2S fraction with 30% EtOH were constituted epicatechin and epicatechin gallate ester ;The SPC-2S fraction with 50% EtOH contained epicatechin and dimeric procyanidins, another SPC-3S contained epicatechin ,dimeric procyanidins and trimeric procyanidns ;Dimeric procyanidins and trimeric procyanidns constitute SPC-5S fraction;monomer dimer trimer tetramer pentamer of procyanidins were the major fractions in 70% acetone elute solution.

1和 2.01：1，也以添加0.1%SPC酒样中两者的比例最为协调；对小曲酒中酸的影响表现为，添加SPC后有利于降低酒样中乙酸的含量，各酒样中乙酸的量随着SPC添加量高粱外种皮中原花青素及其对小曲白酒挥发性成分影响机制研究的增加而降低；对醛类的影响为，添加SPC可降低酒样中糠醛的含量，其中以添加 0.1%SPC酒样中含量最低，为对照组的39.3%，而4个酒样中乙醛含量则无明显差别；低SPC添加量有降低酒样中杂醇油含量的趋势。

The main constituents of this oil were aldehydes(31.15%),terpene and their oxide(20.66%),alkyls(8.35%),Furan heterocyclic compounds(6.41%),non terpene alcohol(4.26%).

知母挥发油的化学成分主要为：醛类(31.15%)、萜类及其氧化物(20.66%)、烷烃及其含氧取代物(8.35%)、呋喃杂环化合物(6.41%)、非萜醇类(4.26%)。

Actually, consider to make clear, deposit time little the new tea at a month, contain the more much phenol without oxidation kind, aldehyde kind with alcohol kind material, the generation of meeting gastric bowel mucous membrane to human body spurs action strongly, cause the symptom such as abdominal distension, bellyacke.

其实，研究表明，存放时间少于一个月的新茶，含有较多的未经氧化的多酚类、醛类和醇类物质，会对人体的胃肠粘膜产生强烈刺激作用，引起腹胀、腹痛等症状。

The methods to eliminate the furfural's interference in the determination of cyanide in wastewater, such as silver salt, petroleum ether extraction, two-step petroleum ether extraction, are tested and compared.

目前对糠醛干扰氰化物测定方面的报道不多，大多是只是针对醛类干扰的消除方法，主要有：NaCl -AgNO3-H2 SO4蒸馏法〔3〕、银盐沉淀法〔4 ，5〕、萃取分离〔6〕。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。