丙酮

Methods:The fresh porcine blood added sodium citrate was used for extracting of heme. The methods of hematolysis by water,ethanol and supersonic wave were compared.

新鲜抗凝猪血为原料，比较了水溶胀法、乙醇法以及超声波法对红细胞溶血效果，以盐酸丙酮配比，盐酸丙酮与溶血液体积比对猪血中血红素提取的影响。

The illicit synthesis of this compound has been achieved most commonly by the reductive amination of phenyl-2-propanone 2, by the Leuckart formamidation of 2 followed by hydrolysis or by the reduction of ephedrine or pseudoephedrine 3 with hydriodic acid and red phosphorus.

此化合物非法合成的方法有，通过1-苯基-2丙酮的还原胺化作用；通过1-苯基-2丙酮的洛卡特氐反应后进行水解生成；在红磷、氢碘酸的参与下，通过还原麻黄素或伪麻黄素合成。

Effect of albendazole upon activity of phosphoenolpyruvate carboxykinase,pyruvate kinase,fumarate reductase,isocitric dehydrogenase, malate dehydrogenase of Cysticercus cellulosae in swine bodies had been determined in the experiment .

测定了在阿苯达唑作用下猪体内囊尾蚴磷酸烯醇式丙酮酸羧激酶、丙酮酸激酶、延胡索酸还原酶、异柠檬酸脱氢酶、苹果酸脱氢酶活性的变化。

In order to supply basic thermodynamic data for the separation design of acetyl acetone from the isomerization reaction of isopropenyl acetate,vapor-liquid equilibrium data of isopropenyl acetate-acetyl acetone system under 101.3 kPa was measured using Ellis equilibrium still.

为了给乙酸异丙烯酯异构化生产乙酰丙酮工艺的产物分离设计提供基础热力学数据，用埃利斯平衡蒸馏器测定了101.3 kPa下乙酸异丙烯酯-乙酰丙酮体系的汽液平衡数据，结果表明，该二元体系未形成共沸物，实验数据通过了Herrington面积法的热力学一致性检验。

Supplement of pyruvate can increase serum LPL levels remarkably(p.05)and decrease serum HL level but no significant statistical difference in rats and swimming rats, decrease serum T4 levels during resting obviously(p.05)in rats and reduce serum T4 levels to certain extent in swimming rats. It indicated that pyruvate supplement could regulate lipometabolism in rats and swimming rats by means of the effect on enzyme and hormone levels.

丙酮酸补充还可明显降低大鼠血糖水平(P.05)，一定程度地升高其血清FFA水平；明显降低大鼠血清TC水平和游泳大鼠血清TG水平(p.05)，使大鼠和游泳大鼠血清HDL-C含量呈一定的升高趋势，并明显降低了游泳大鼠血清LDL-C水平(P.05)，这表明丙酮酸具有持久、稳定的降血脂作用，配合运动补充，作用效果可能会更明显；4。

At the same time, the effects and mechanism of pyruvate supplement on body composition and lipometabolism during exercise should be discussed.38 male Wistar rats were selected and randomly divided into 4 groups: placebo control group, training control group, supplement control group and training and supplement group. All rats were in normal diets and drink at random.

动物实验：选取38只健康成年雄性Wistar大鼠，周龄8周，随机分为安慰剂对照组(placebo control，简称PC组)、运动对照组(training control，简称TC组)、补充丙酮酸对照组(supplement control，简称SC组)和补充丙酮酸运动组(training and supplement，简称ST组)。

Acetylpyruvic acid methyl ester can be synthesized by the condensation of dimethyl oxalate and acetone in the presence of sodium methoxide.

叙述了在催化剂甲醇钠的存在下，以草酸二甲酯和丙酮为原料合成乙酰丙酮酸甲酯的工艺。

In this paper, the structures of methylglyoxal and 1,1-dimethoxy-2-propanone are identified by GC-MS, NMR and the standard samples. The reaction conditions of catalyst oxidation and acetalation according to reaction mechanisms are discussed.

本文运用质谱、核磁和标样确定了中间体丙酮醛及其产物1，1-二甲氧基丙酮的结构，并结合反应机理对催化氧化和醛保护的反应工艺条件进行了探索。

Secondly, the silver based catalysts modified by phosphorus, zirconium, zinc, potassium and so on using molecular sieve as carrier, which were produced by ion-exchange method, had also good catalytic performance for 1,2-propane glycol oxidation to methylglyoxal. The conversion of 1,2-propane glycol and the selectivity of methylglyoxal were both high, and the impurity such as formaldehyde and acetaldehyde in the product is little. At the condition of the temperature 300 ℃, the molar ratio of oxygen to 1,2-propane glycol 1.7:1, the space velocity 6000h~(-1), and the concentration of 1,2-propane glycol 70wt%, the conversion of 1,2-propane glycol is 90% and the selectivity of methylglyoxal is 45% on the Ag-P catalyst.

其次对采用离子交换法制备的负载在分子筛上的银系催化剂进行了研究，发现此催化剂在助催化剂磷、锆、锌、钾等的作用下对丙二醇的低温氧化脱氢具有很高的活性，可以得到较好的丙酮醛的收率，并且产物中的甲醛、乙醛副产物的量比较低；经过对Ag-P催化剂上反应条件的考察，发现当温度为300℃、氧醇比1.7：1、空速6000h~(-1)、丙二醇浓度为70wt%时，丙二醇的转化率为90%，丙酮醛的选择性为45%。

The effects of water content and chlorine mass flow rate on the selective monochlorination were investigated.

采用填料塔作为氯化反应器，在塔内全回流的丙酮与氯气进行反应，实现了丙酮的高选择性一氯化。

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。