查询词典 carboxylic

composite latex ; methyl acrylic acid ; particle size ; carboxylic group distribution ; alkalic thickening

本文研究了复合乳化剂浓度、聚合方法对 St/BA/MAA复合胶乳的粒子大小、羧基分布及碱增稠性的影响。1 实验部分1

The formate activates the carboxylic acid and functions as a source of nucleophilic alkoxide.

羧酸甲酸激活的职能和核醇源泉。

The most commonly used method for the covalent binding of biomolecules onto 1-D nanostructures is through the diimide-activated amidation of carboxylic acid terminated nanostructures.

最常用的方法是通过端羧酸基纳米结构的二酰亚胺活化氨基化合物来进行生物分子与1-D纳米结构的共价结合。

The most commonly used method for the covalent binding of biomolecules onto 1-D nanostructures is through the diimide-activated amidation of carboxylic acid terminated nanostructures.

在一维纳米结构上共价结合生物分子最常用的做法是对纳米结构的C端进行二酰亚胺活化。

The extraction performance of Zn from HCl medium with a new kind of carboxylic extractant, ammonized sec-octylphenoxy acetic (CA12) and ammonization of the extractant have been studied.

研究了一种新型萃取剂仲辛基苯氧乙酸(CA12)的皂化以及从盐酸介质中萃取Zn的性能。

Azelaic acid is a natural saturated binary carboxylic acid, which has good inhibitory and killing activities to various aerobic and anaerobic micro-organisms presents on the skin suffered acne.

壬二酸是一种天然的饱和二羧酸，壬二酸对存在于粉刺皮肤上的各种需氧和厌氧微生物均有良好的抑菌、杀菌活性。

The latest applications of boronic acids as catalyst to organic synthesis are reviewed, focusing on the catalytic activities and reaction mechanism of different catalysts discovered in condensation reaction, carboxylic acid reduction reaction, and Diels-Alder reaction.

吴记勇 ；方浩*；徐文方摘要：综述了有机硼酸类作为催化剂应用于有机合成反应中的最新研究进展，重点介绍了所发现的各种有机硼酸催化剂在缩合反应、羧酸还原反应、Diels-Alder反应中的催化活性以及反应机理。

Novel sodium 2-2-(alkylaryloxy-alkylamidoethanesulfonates (m+nAr-T, m, n: carbon numbers; Ar: aromatic nucleus; T: taurine) with high purity were synthesized through bromization, esterification, Fries rearrangement, Pd-catalyzed hydrogenation, Williamson reaction, and acylation, et al, using carboxylic acid, phenol and taurine as starting materials. The structures and purities were characterized.

以羧酸、苯酚和牛磺酸为原料，通过溴代反应、酯化反应、Fries重排反应、催化氢化反应、Williamson反应以及催化酰胺化反应等过程，首次成功合成并表征了系列结构明确的高纯度N-酰基牛磺酸钠(m+nAr-T，m、n为烷基链碳数，Ar为芳环，T表示taurine)。

According to the result, we believed that the reason resulted in the low sensitivity was that the marker residue compound MQCA structure has changed after conjugated with protein and the antibody induced by the conjugation could not recognize the free MQCA in the ci-ELISA. Therefore we designed some hapten which could reserve the marker residue structural speciality mostly. After synthesis route selection and optimum, the hapten 7-Hydroxymethyl-3-methyl-quinoxaline-2-carboxylic acid was synthesized, used 4-methyl-2-nitroaniline as the start material via six steps, such as oxidation cyclization, bromize reaction, hydrolysis, Beirut reaction, reduction, hydrolysis. This work established basis for producing the high affinity antibody and developing the sensitive ELISA residue detection method.

本论文认为导致ELISA检测灵敏度较低的原因，是残留标示物和蛋白偶联后的特征结构发生改变，诱导产生的抗体不能够对游离MQCA很好的识别，因此，本论文设计了能够最大化保留MQCA结构特征的系列半抗原结构，并对其合成路线进行了筛选和优化，最终以对甲基邻硝基苯胺为起始原料，经氧化环化、溴代、水解、Beirut缩合、还原、水解六步反应制备含羟甲基结构的MQCA衍生物7-羟基甲基-3-甲基-喹噁啉-2-羧酸，为制备对游离残留标示物高亲和力的抗体，高灵敏度的ELISA残留检测方法的建立奠定基础。

A process for the carbonylation of allylic butenyl ether (for example, methyl crotyl ether, 3-methoxybutene-1 and mixtures thereof) or mixture of butadiene and alcohol and production of beta-gamma unsaturated carboxylic acid esters (for example, methyl-3-pentenoate) utilizing a rhodium-containing catalyst for example, dicarbonylacetylacetonate rhodium(I or the like promoted with an iodide-containing compound (for example, HI, AlI3, SnI4, TiI4, CrI3, and CoI2 or the like).

一种将烯丙型丁烯基醚(如甲基巴豆基醚、3－甲氧基丁烯－1及其混合物)或者丁二烯与醇的混合物羰基化的方法，以及由含碘化物化合物(如HI、AlI3、SnI4、TiI4、CrI3和CoI2或等效物)促进，用含铑催化剂如二羰基乙酰丙酮酸铑(I或其等效物制备β－γ不饱和羧酸酯(如甲基－3－戊烯酸酯)的方法。

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。