查询词典 branched chain

The relationship between the structure and the performance of polycarboxylate superplasticizer was analyzed. The respective function of the structure unit of principal and branched chain was discussed. And the progress of synthesis and molecular structure design of polycarboxylate superplasticizer was reviewed according to the difference in the structure unit of principal chain.

分析了聚羧酸系高效减水剂的结构与性能之间的关系，探讨了减水剂分子的主链结构单元与支链结构单元的功能与作用，并分类介绍了聚羧酸系的分子结构设计及其合成的研究与进展。

There is some mixed information about using branched chain amino acids and I know that there is company from Japan that has started making branched chain granules. In addition we have started to test them but they taste terrible and patients don't like to eat them.

关于支链氨基酸的使用还有一些不确定的信息，我知道有一家日本公司已开始生产支链氨基酸颗粒并已开始进行测试，但因为味道极差，患者不喜欢服用。

The unimolecular decomposition and dehydrogenation of ethanol initiate the branched chain reaction, and the 3 isomers of radical C2H5O determine the direction of the reaction chain branching.

乙醇氧化经裂解反应、脱氢反应最终形成支链反应，乙氧基C2H5O的三种同分异构体在链分支中决定了链分支的进行方向。

The results showed that:(1) With increasing of the length of the carbon chain, the reducing of degree of unsaturation and not introducing the branched-chain, the tribological performance enhances. But with increasing of the added volume, the tribological performance does not always enhance.

结果表明：(1)随着合成酯的碳链长度增加、不饱和度减小及支链的非引入，摩擦学性能增强；但添加量增大，摩擦学性能并非一直增强。

The method comprises melt extruding a mixture comprising a polyester and one or more alkyl metal sulfonates where the metal is Na, Li or K and the alkyl is straight or branched chain alkyl of 12 to 15 carbon atoms, or is straight or branched chain alkenyl of 12 to 18 carbon atoms.

方法包括将包括聚酯和一种或多种烷基金属磺酸盐的混合物熔体挤出，其中金属是Na、Li或K和烷基是12-15个碳原子的直链或支链烷基，或是12-18个碳原子的直链或支链链烯基。

The invention provides a method for homopolymerizing conjugated dialkene or co-polymerizing conjugated dialkene and monovinyl aromatic hydrocarbon. The method comprises the following steps: the conjugated dialkene is homopolymerized or the conjugated dialkene and the monvinyl aromatic hydrocarbon are co-polymerized randomly. The method is characterized in that at least one alkali metal alkoxide compound expressed by the formula is used as a structure regulator; in the formula, R is linear chain or branched chain alkylidene radical having 1 to 10 carbon atoms; M is alkali metal selected from Li, Na, K, Rb and Cs.

本发明提供了一种使共轭二烯烃均聚或者使共轭二烯烃与单乙烯基芳烃共聚的方法，包括在阴离子聚合条件下使共轭二烯烃进行均聚或者使共轭二烯烃与单乙烯基芳烃进行无规共聚，其特征在于采用至少一种式所示的碱金属醇盐化合物作为结构调节剂，其中R为具有1-10碳原子的直链或支链亚烷基；以及M为选自Li、Na、K、Rb和Cs的碱金属。

For example ,the non－ polar materials like hydrocarbons are heavy and draggy as compared to polar emollients,isoparaffins are light and smooth,the polar esters were significantly lighter and smoother,the branched chain and unsaturated esters were exceptionally light and smooth,in the case of straight chain esters,as the emollients become smoother and lighter ,the oiliness increases,in the case of unsaturated and branched chain esters,the emollient becomes lighter ,as well as less oily,when the alcohol chain length is decreased.

研究结果表明，物理化学特性明显影响润肤剂的轻柔感和油亮感，例如类似碳氢化合物的非极性物质相对于极性物质要粘稠些，异构烷烃则轻柔和光滑，带分支链的不饱和酯特别具有轻柔感和光滑感，带分支的不饱和酯相对直链饱和酯在油亮感方面有着特别的不同，直链酯随着产品光滑感和轻柔感的增加，油亮感也增加，对于带分支的不饱和酯而言，产品变得更轻柔，油亮感下降。

In the plant albumen, the content of Glutaminic acid, Branched-chain amino ac i d in cerial protein is abundant. Glutaminic acid has great effect on nervous system. Branched-chain amino acids have the function of saving protein,and have impact on immune system,etc.

在实验中，还发现谷物经加工后氨基酸的变化，其中赖氨酸、精氨酸、甘氨酸等含量有大幅度降低，影响了谷物食品的营养价值；新谷物品种中氨基酸含量普遍增高，蛋白总量增加，这对种植业意义深远；以具有特殊香味而受到人们喜爱的香米与普通大米相比，就其蛋白质品质而延其营养价值低于普通大米。

Polyether modified polysiloxane is a new multi-functional fine chemical product. And it is made from inarching polyether segment on the branched chain or terminal chain of active polysiloxane.

聚醚改性聚硅氧烷是一类新型的多功能的精细化工产品，它通过活性聚硅氧烷的支链或链端上接聚醚链段而得到。

The connection mode of MOP was mainly that taking 1-4 glycosidic bond as the main chain and taking 1-6 glycosidic bond as the branched chain.

该糖的连接方式主要以1-4糖苷键连接为主链，1-6糖苷键连接为支链。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。