羟醛

Methods Based on the sugar analysis of 10 tea polysaccharides, the mix of arabinose:galactose:glucose (1:1:0.5, mol ratio), which was the major sugar composition in tea polysaccharides, were applied to investigate the influence of sugar on the carbazole method and meta-hydroxydiphenyl method respectively.

采用气相色谱法分析了10种茶多糖样品单糖组成，考察了其主要的三种单糖组分组成的混合中性糖（1：1：0.5，摩尔比）对硫酸咔唑法、间羟联苯法两种方法测定糖醛酸含量的影响。

5-HMF is the active component in prepared Cornus officinalis and substance basis for protecting liver and kidney.

5-羟甲基糠醛是山茱萸炮制品中的活性成分，是补肝益肾作用的物质基础之一。

Objective: To develop the mechanism of improving protection function of prepared Cornus officinalis for liver and kidney and the biological activity of 5-hydroxymethylfurfural(5-HMF).

中文摘要：目的：探讨山茱萸炮制后补肝益肾作用增强的物质基础及5-羟甲基糠醛(5-HMF)的生物活性。

Compared with model group, cp groups alleviate cell crimple could increase the activity of cell, decrease the content of MDA, and increase the level of HYP and the activity of SOD.

结果光老化组细胞发生形态改变，增殖能力明显下降，羟脯氨酸含量下降，丙二醛含量升高，SOD活力下降，虫草保护组细胞有所改善。

MethodsPhotoaging skin fibroblast models were induced by 8-MOP/UVA. Cordyceps polysaccharides was administrated before 8-MOP/UVA .HE stained,MTT, hydroxyproline, MDA and SOD quantitant were used to test the effects of cordyceps polysaccharides. ResultsCell crimple,condensation of nuclear chromatin in 8-MOP/UVA model group were observed.

方法用8-甲氧补骨脂素联合UVA（8-MOP/UVA）诱导皮肤成纤维细胞光老化，用HE染色、MTT、羟脯氨酸含量、丙二醛含量检测及SOD活力分析等方法观察虫草多糖对成纤维细胞光老化过程中的形态、活力、胶原合成及抗氧化能力的影响。

The decarboxylation of 5-hydroxymethylfurfural to levulinic acid is a key step in the preparation of levulinic acid from biomass.

5-羟甲基糠醛脱羧生成乙酰丙酸是生物质资源出发制备乙酰丙酸过程中的关键步骤之一。

Part I is devoted to the desensitizing mechanism of a widely-used dentine desensitizer that is the aqueous solution of 35% 2-hydroxyethylmethacrylate plus 5% glutaraldehyde. HEMA, GA and the mixture of HEMA + GA were used to interact with dentin, collagen, hydroxyapatite and bovine serum albumin individually.

Gluma由35％的甲基丙烯酸羟乙酯与5％的戊二醛的水溶液组成，是一种常用的牙本质脱敏药物，但关于其脱敏的机理一直有争论。

Objective: This paper aims to verify the curative effect that Jiusuyu cure the acute alcoholism disease by counting the changes of ebriety time, ebriety rate, sober-up time death rate, and discuss the effect of neurotransmitter and oxidative damage on acute alcoholism mice in brain tissue by examining the changes of SOD, MDA, DA, 5-HT, AchE in btain tissue.

目的：本研究旨在通过观察急性酒精中毒小鼠模型醉酒时间、醒酒时间、醉酒率、死亡率来验证酒速愈的药效，并通过检测脑组织中超氧化物歧化酶、丙二醛，纹状体多巴胺、5-羟色胺(5-HT)和海马胆碱脂酶指标的变化探讨该药对急性酒精中毒小鼠脑神经递质和氧化损伤的影响。

Each starch reagent has its own mode of action on mineral surface, such as primary starch mainly by hydrogen bond, cationic starch by the co-action of hydrogen bond and electrostatic force (for minerals with negative charge on its surface), while carboxymethyl starch, hydroxamic acid starch and dialdehyde starch principally by chemical force accompanied with hydrogen bond and electrostatic force in part. Such chemical forces ensure the close adsorption of reagent on diaspore surface and enforces the hydrophilic of mineral surface. Also the branched chain enable the starch to cover the collector adsorbed on mineral surface, so as to depress diaspore furthermore.

不同淀粉药剂在矿物表面表现不同作用，原淀粉主要是氢键的作用，阳离子淀粉是氢键和静电力的共同作用，羧甲基淀粉、羟肟酸淀粉和双醛淀粉离子性药剂与矿物间的作用除了氢键、静电力外，更重要的是与矿物表面金属离子间产生的化学作用，使药剂能牢固地吸附在一水硬铝石矿物表面，增加矿物表面的亲水性，同时，淀粉支链结构的存在，使它能够掩盖吸附的捕收剂，达到抑制一水硬铝石的目的。

Some technologies,including olefines from methanol,oxalates and ethylene glycol from carbon monoxide,carbon dioxide-based polymers,chemicals from the syngas prepared by biomass gasification,acetone and butanol by fermentation,and chemicals from acetylene,ethanol,glycerol,furfural,hydroxymethyl furfural and starch,were reviewed.

包括甲醇制烯烃，一氧化碳制草酸酯和乙二醇，乙炔化学品，二氧化碳聚合物，生物质气化合成化工产品，发酵法生产丙酮、丁醇，乙醇衍生化工产品，甘油合成化工产品，糠醛和羟甲基糠醛合成化工产品，淀粉合成化工产品等重要的石油替代化学品生产技术被介绍。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。