查询词典 alcohol acid

The sol-gel solution was prepared by mixing ethyl orthosilicate, absolute alcohol and 0.1molL^(-1) HCl in a definite proportion, and adding an appropriate amount of silicotungstic acid as active material, strring for 30min and then standing for 24h at room temperature.

溶胶－凝胶溶液系将正硅酸乙酯、无水乙醇及0.1molL^(-1)盐酸按一定比例混合后加适量的硅钨酸作为活性物质，搅拌30min混匀后在室温放置24h配成。

Results: Comparing with movement fatigue group, blood glucose contents were significantly increased but oxypropionic acid and urea nitrogen contents were significantly increased; testosterone and T/C were significantly advanced, myocardium SOD activity was significantly increased, while MDA was significantly decreased in cluytyl alcohol preparation group.

结果：和运动疲劳组相比，补充二十八烷醇制剂组大鼠血糖显著升高，血乳酸、血尿素氮显著降低；T、T/C比值显著增高，心肌SOD活性显著增强，MDA含量显著降低，且效果优于丙酮酸－肌酸组。

Several types of ligand reactions observed under hydrothermal condition were summed up:(1) hydrolysis of pyridine nitrile, aldehyde and ester in mixed water and alcohol into pyridine-carboxylate;(2) replacement of carboxylate group with sulfonic group;(3) coupling of phenanthroline by dehydrogen;(4) oxidative coupling of methanol into oxalic acid;(5) hydroxylation of isophthalate.

总结了以往在水热条件下观察到的几类配体反应：（1）吡啶腈、醛和酯在醇和水混合溶液中水解成吡啶羧酸；（2）磺基取代羧基反应；（3）邻菲啰啉的脱氢的聚合：（4）甲醇被氧化偶合生成草酸：（5）间苯二甲酸的羟基化反应。

Esterification of phenethyl alcohol with acetic acid was studied using lanthanum chloride supported on activated carbon as heterogeneous catalyst.

以活性炭负载三氯化镧为非均相催化剂，对乙酸与苯乙醇之间的酯化反应进行了研究，考察了催化剂用量、醇酸摩尔比、反应时间对乙酸苯乙酯收率的影响。

The volatile flavor compounds of Nanx wudl at the start stage of fermentation mainly were hydrocarbon compounds and aldehydes, ketones from lipids oxidation, After 180 days, ethyl hexanoate, ethyl acetate, phenethyl alcohol, acetic acid and ethyl octanoate were predominant.

发酵180d后，主要风味组分是己酸乙脂、苯乙醇、乙酸乙脂、乙酸和辛酸乙脂。

Monododecylphosphate was prepared by esterification of lauryl alcohol with phosphoric acid(mass fraction 85%) on cesium phosphotungstate catalyst.

以磷钨酸铯盐为催化剂，由月桂醇和85%的磷酸直接酯化合成单十二烷基磷酸酯，考察了带水剂种类、反应时间、磷钨酸铯盐催化剂中的铯取代数、催化剂用量和月桂醇与磷酸摩尔比等条件对磷酸转化率及单十二烷基磷酸酯选择性的影响。

The effect of components including tetracholrophthalic acid, phthalazine and antifoggant with tribromomethyl sulfone groups on photographic properties of FTG materials was investigated in different pH, using polyvinyl alcohol as a hydrophilic binder, in situ formed AgBr as light sensitive component.

本文以水性聚乙烯醇为粘合剂，原位法合成的AgBr作为光敏元，考察了组分四氯邻苯二甲酸、酞嗪以及三溴甲基砜类防灰雾剂在体系不同pH值时对PTG材料感光性能的影响。

The graft polymerization of acrylonitrile on Crosslinked polyvinyl alcohol microspheres CPVA microspheres was performed by using cerium ammonium sulfate as initiator, and grafted microspheres CPVA-g-PAN were prepared. Subsequently, the grafted PAN was converted into poly via amidoximation reaction with hydroxylamine hydrochloride as reagent, resulting in the functional microspheres CPVA-g-PAO. The chemical structure and physicochemistry characters were adequately characterized with infrared spectrum, scanning electron microscope and determining Zeta potential. The effects of main factors on the amidoximation transform reaction of the grafted PAN were researched with emphasis, and the adsorption property of the functional microspheres CPVA-g-PAO for some biomolecules was examined preliminarily with uric acid as a model biomolecule.

以硫酸铈铵为引发剂，实施了丙烯腈在交联聚乙烯醇微球表面的接枝聚合，制备了接枝微球CPVA-g-PAN，然后以盐酸羟胺为试剂，通过偕胺肟化转变，将接枝的PAN转变为聚偕胺肟，制得了接枝有聚偕胺肟的功能微球CPVA-g-PAO，采用红外光谱法、扫描电子显微镜及Zeta电位测定等法，对功能微球CPVA-g-PAO的化学结构及物理化学特性进行了表征，重点考察了各主要因素对接枝PAN的偕胺肟化转变反应的影响，也以脲酸为模型分子，初探了功能微球CPVA-g-PAO对生物分子的吸附性能。

Coating-sand bonding strength is further increased through the esterification linking reaction between polyhydric alcohol and polyacrylic acid.

通过多元醇与聚丙烯酸的酯化交联反应使涂砂结合强度进一步提高。

The electrolyte, which is different from the conventional electrolyte of the ethylene-boric acid system, consists of ethylene, dimethylformamide, ammonium hexandioic and polyhydric alcohol but water.

它是以乙二醇和二甲基甲酰胺为主溶剂，以己二酸铵为溶质，以多元醇为热稳定剂的非水系工作电解液。本文对新型工作电解液和一般工作电解液进行了比较。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。