查询词典 acid

The derivatives were selected as probes to study the absorbability and rheological property in free fatty acid, unsaturated fatty acid and heavy metal ion. Also in this paper, there is a preliminary research of absorbability in lipin, lipoprotein and biliary acid of the derivatives.

利用这些衍生物对食用油中游离脂肪酸、不饱和脂肪酸和重金属离子进行了吸附性能及流变性能测试；以及对油酯、脂蛋白和胆汁酸的吸附性能作了一定的研究。

The results show that the optimum conditions are: the mole ratio of malonic acid to benzaldehyde 1.0:0.9, the dosage of proline 4.0% of the weight of malonic acid and the reaction time 4h, the yield of cinuamic acid is 99.0% under the optimum conditions.

实验结果表明，合成肉桂酸的最合适条件：原料比为1.0：0.9，L-脯氨酸用量为丙二酸质量的4.0%，反应时间4h，在此最佳条件下，肉桂酸的收率达到99.0%。

Neomycin on ammonia acid can lead to vitamin B12 deficiency; phenytoin, methotrexate, B ammonia pyrimidine, methyl benzyl ammonium pyrimidine and Triamterene, etc. can cause folic acid deficiency; mercaptopurine, 5 - fluoro-piperidine urine density, Ara-C, etc. can interfere with nucleic acid synthesis, these drugs can lead to megaloblastic anemia.

新霉素、对氨水杨酸可导致维生素B12缺乏；苯妥英钠、甲氨蝶呤、乙氨嘧啶、甲基苄氨嘧啶及氨苯蝶啶等可引起叶酸缺乏；巯嘌呤、5--氟尿密啶、阿糖胞苷等能够干扰核酸的合成，这些药物都可导致巨幼红细胞性贫血。

Rats in the experimental group received conventional fixation, and then decalcified with modified decalcifying fluid [10 mL of methanoic acid, 8 mL of concentrated hydrochloric acid (1.19 relative density, 3 g of aluminum chloride, 20 mL of formaldehyde (0.4 volume fraction), 3 mL of glacial acetic acid, adding to 200 mL with saline solution], dehydrated, transparentized with chloroform, and then embedded for a long time, dyed, mounted and made into tissue sections.

实验组经过常规固定，而后应用改良脱钙液（甲酸10 mL、浓盐酸(相对密度1.19)8 mL、氯化铝3 g、体积分数为0.4的甲醛20 mL、冰乙酸3 mL，加生理盐水至总体积200 mL）脱钙、脱水、氯仿透明、包埋时间延长、染色、封固和切片；对照组进行常规固定、脱钙、脱水、透明、包埋、染色、封固和切片。

The present invention discloses a polycarboxylic acid copolymer which is obtained by copolymerization of monomer components comprising a polyalkyleneimine unsaturated monomer (A2) and an unsaturated carboxylic acid monomer, the polyalkylene glycol unsaturated monomer (A2) having an oxyalkylene group bonded to a polyhydric alcohol residue, and the monomer component containing an unsaturated monocarboxylic acid monomer.

公开了一种多元羧酸共聚物，它是通过单体组分共聚制得的，所述单体组分包括聚二醇不饱和单体(A2)和不饱和一元羧酸单体，所述聚二醇不饱和单体(A2)具有使氧化烯基结合到多元醇残基上的结构，所述多元醇残基平均每个分子具有不少于3个羟基。

Monochloroacetic acid is a rather important chemical raw material and organic intermediate product, which is mainly manufactured by chloride of acetic acid using sulfur and anhydride acetic acid as catalyst.

氯乙酸是一种及其重要的化工原料和有机中间体，目前氯乙酸主要以硫磺或醋酐为催化剂进行乙酸氯化生产而得。

In this article, high DS and low viscosity carboxymethyl starch was prepared in aqueous media through the reaction between corn starch with acid treatment and etherifying agent, the effect of acid treatment time, liquor/material ratio, the amount of sodium hydroxide, the amount of monochloroacetic acid, etherification time, and reaction tempera.

以玉米淀粉为原料，采用酸化-醚化复合变性的方法在水相中制备高取代度低黏度羧甲基淀粉，探讨了酸化时间、液固比、NaOH用量、ClCH2COOH用量、醚化反应时间、反应温度对羧甲基化过程的影响，研究发现，对原淀粉进行酸化，可以在不增加其它反应试剂用量的基础上提高产物的取代度，但是酸化时间不应过长。

Five of their single crystals were obtained and their structures were determined by X-ray diffraction. By comparison, it was found that dithiocabamate complexes often formed an exactly planar MS4 unit, such as [Mo(R2dtc)2]; and also formed a special MS 5 unit, such as [Cu2(R2dtc)4], the copper atom lies in a distorted square-pyramidal environment.Four kinds of heteropoly acids were prepared and characterized; a series of solid superacid catalyst of supported heteropoly acid were prepared and characterized; regioselectivites of chlorobenzene mononitration with nitric acid with different heteropoly acid on different supports and reaction conditions have been investigated.

培养并解析了5个该类配合物的单晶结构，通过比较，发现二硫代氨基甲酸盐与过渡金属容易形成四配位结构，金属原子与4个硫原子共平面，比如二乙基二硫代氨基甲酸钼；也能形成比较特殊的五配位结构，比如二乙基二硫代氨基甲酸双核铜，Cu原子与5个S原子相连，处于一个变形的四方锥结构的配位环境。

Besides, the efficacious concentration of either morrhuic acid or sodium morrhuate was 0.1%, so they contained more docosahexaenoic acid and eicosapentaenoic acid and were ideal spermicides in vitro.

所以，含有较多廿二碳六稀酸、廿碳五烯酸的鱼肝油酸和它的钠称是较为理想的体外杀精子剂。

The results showed that among the main saturated fatty acids,palmitic acid content keeps the highest,myristic acid content was in the middle,and lauric acid content was the lowest.

在不饱和脂肪酸中，亚麻酸的含量最高，亚油酸的含量次之，油酸含量略低于亚油酸。亚油酸含量表现为随生长期延长而降低；亚麻酸含量在7月达到最大累积，随后急剧降低。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。