查询词典 reaction ring

In Chapter 5,the pyrolysis of substituted six-membered ring model compound 4-methyl pyridine has been investigated.Instead of detail theoretical analysis of the reaction mechanism,the general results have been proposed from the products distribution and the combination of the pyrolysis investigation of its analogous pyridine.The major products are H_2,C_2H_2,C_4H_2,C_3H_3N and HCN,here HCN is not a primary initial product at low extent of decomposition.The mole fraction profiles of products have been obtained from the near threshold ionization.The pyrolysis of 4-methyl pyridine is initiated from the methyl abstraction and hydrogen abstraction procedures which are associated with the understanding of the soot formation and the NOX precursor correspondingly.

主要产物为H_2，C_2H_2，C_4H_2，C_3H_3N和HCN，其中HCN为非低温时的热解产物；通过近阈值电离并导出物种随温度变化的摩尔分数曲线，更详细地定量地描述了产物随温度的变化。4-甲基吡啶热解主要从母体脱甲基和脱氢两个初始反应出发，一种趋势是形成大质量数的苯并或杂环的多环化合物，有助于了解炭黑形成过程中的复杂化学过程；另一趋势是开环生成小的碳氢和腈类物质，实验得出的含氮物质的种类及随温度变化有助于了解NO_x的前驱物质的形成及其变化规律。

Results By optimization test, capture antibody and detection antibody (from PVA detection kit, Agdia, USA) were finally diluted at 1:50 (4ug/mL) and 1:25 to be used in one step CBA, respectively. A total CBA reaction time of 2 h was needed. No cross reactivity with other plant virus similar to potato virus Y, lettuce mosaic virus and tomato ring spot virus were found. Detection sensitivity for positive control sample in one-step CBA was 4 folds higher than that in normal plate double antibodies sandwich enzyme-linked immunosorbent assay.

通过实验优化检测条件，最佳捕获抗体工作浓度为4μg/mL、最佳检测抗体工作浓度为1：25倍稀释、最佳反应时间为2h；与马铃薯Y病毒、莴苣花叶病毒、番茄环斑病毒等均未出现交叉反应；阳性样品经64倍稀释后依然可检出，检测灵敏度是传统微孔板ELISA的4倍。

The first step of the reaction is the hydrogenation of the aromatic ring to which the amino group is attached, followed by CN bond scission.

第一步的反应是加氢的芳环，以其中的氨基酸组是附带条件，其次是架CN键断裂。

And also, we unexpectedly discovered a ring-opening reaction of aziridines or epoxides with iodine promoted by thiophenol.

我们认为，在反应中，DMSO自身作为一种Lewis Base，能有效活化亲核试剂，从而促进反应的顺利进行。

Two kinds of polyaspartic acid derivates, i.e. PEG-g-PAsp and PEG-g-PDEA, were prepared through the ring-opening reaction of polysuccinimide by CH3O-PEG-NH2, followed by alkaline hydrolysis and aminolysis, respectively.

通过胺端基聚乙二醇(CH3O-PEG-NH2)开环聚琥珀酰亚胺，进一步碱解和胺解制备了聚乙二醇接枝聚天冬氨酸和聚乙二醇接枝聚乙二胺基天冬酰胺两种聚天冬氨酸衍生物。

Bis(3,4-dicarboxy-phenyl) hexafluropropane dianhydride (6FDA)/pyromellitic dianhydride and m-phenylene diamine, and then a post-azo-coupling reaction of p-Nitrophenyldiazonium fluoborate toward the arylamine ring of PAAs.

首次对侧链型PI极化膜的热光性能展开研究，探讨化学结构和聚集态结构对其热光系数及其偏振依赖性的影响规律，寻求控制和优化热光性能的方法。

The polymeric copper tetraaminophthalocyanine incorporated with aniline film (p-CuTAPc-PAN) was prepared using electrogeneration. The polymeric reaction between CuTAPc and aniline occurs as a result of the attack of an electrophile such as the cation radical NH2 groups remaining the p-CuTAPc on the 2-positon of the benzenoid ring.

2用电化学方法制备四氨基酞菁铜与苯胺共聚的高分子聚合膜(p-CuTAPc-PAN)，对其性质进行了研究，并与聚四氨基酞菁铜进行对比。

The invention comprises a cyclopalladated catalyst with axial chiral binaphthyl backbone containing phosphine ligand as well as the synthesis thereof, and the application of the catalyst with cyclopalladated catalyst with axial chiral binaphthyl backbone containing phosphine ligand with a similar structure to the hetero atom norbornadiene ring cleavage reaction through an asymmetric catalytic organic boron agent.

本发明包括一类具有轴手性联萘骨架含膦配体的环钯催化剂及其合成，以及其与具有类似结构的轴手性联萘骨架含膦配体的环钯催化剂在不对称催化有机硼试剂对杂原子降冰片二烯开环的应用。

The hemolysin consists three components,B,L1,and L2(35.36.and 45kDa,respeotively),combinations of all three moieties produed the unique ring-shaped zone of hemolysis,increased rabbit vascuolar permeability,caused fluid accumulation in rabbit ileum loop and appeared cellulotoxic reaction on Vero cells.

溶血素由B、L1和L2 3种成份组成，分子量分别为35、36和45kDa 3种成份的协同作用在血琼脂上引起靶状溶血，使兔皮肤血管通透性增加，兔小肠肠段结扎产生积液反应，Vero细胞形态学改变。

The proposition of reaction pathway suggested that the initial degradation of pyridaben proceed via C-S bond cleavage between phenyl ring and heterocyclic group, and then promote a serious of reactions such as substitution, oxidation and dealkylation.

反应路线推导表明降解哒螨酮首先是在苯环与杂环之间C-S键处断裂为两个部分，接着发生取代、氧化，去烷基等系列反应。

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。