不反应的

It is necessary to strengthen safety education about drug allergy for nurses,including the meaning of drug allergy,recognizing that each drug and each medication route may has allergic reaction and drug allergy test is not the only standard to estimate drug allergy,abiding by nursing technique regulations strictly,guaranteeing the quality of drug allergy test,monitoring drug allergic reactions,recognizing the high incide...

必须对护士加强药物过敏的安全教育；不断学习和认识药物过敏的深刻意义，每一种药物和给药途径均可能发生过敏反应，药物过敏试验不是判断药物过敏的唯一标准，应走出药物过敏的误区；严格遵守护理技术操作规程，把好药物过敏试验质量关；密切观察药物过敏反应，掌握药物高度过敏反应发生的时间，早期发现不典型过敏性休克的症状；熟练掌握过敏性休克的抢救规程，病人对药物过敏的相关内容应有醒目标志。

Chiral centers of C5 and C8 are directly constructed in the key step of the diastereoselective propargylation from D--tartrate. The methylation and subsequent methoxycarbonylation result in desymmetrization of the terminal dialkynes. The α,β-unsaturated δ-lactone is synthesized after partial hydrogenation and lactonization.

由非天然酒石酸出发，利用双向非对映选择性的炔丙基化反应，在一步反应中同时构建C5和C8手性中心；然后通过末端炔基的甲基化、甲酯基化，延长碳链并对分子去对称化；内酯化得到关键中间体α，β-不饱和六元内酯，再经多步反应转化得到8-epi--Boronolide。

The mathematic relationship between coking coal's characters and coke reactivity index and coke strength after reaction was studied.Main effect factors were analyzed by dynamics model formed by metaplast and mesophase.Taking metamorphic degree of coal, coal maceral, caking property, ash and the content of K_2O and CaO as independent variable, forecasting model was set up by the coking tests with 25 kinds of coals used in the industries.It concludes that exinite in coal makes CRI increase and CSR...

以研究炼焦煤性质与焦炭反应性、反应后强度之间的数学关系为目的，通过胶质体和中间相形成动力学解析导出模型的主要影响因子，以煤的变质程度、煤岩组成、粘结性、灰分及K2O和CaO含量等因素为自变量，由25种工业用煤的炼焦试验，建立出预测模型，并得出壳质组使反应性增大及反应后强度降低；K2O催化作用强于CaO，且两者的催化作用均随煤的变质程度不同而不同等重要结论。

But the effluent ammonium in the anoxic reactor, where enough NO2 were present, was equal to the blank system, and no ammonium was converted to such nitrogen compounds as NO2- and N2 by Nitrosomonas eutropha using NO2 as electron acceptor, which maybe caused by lack of the function bacteria. There were two ANAMMOX reaction pathways in the one-stage autotrophic nitrogen removal system. One way was that after part of NH4+ was oxidized to NH2OH under aerobic conditions, NH2OH and NO2- were converted to N2O under anaerobic conditions, at last N2O was further converted to N2 which realized the nitrogen removal; Another way was that at first NO2- was reduced to NH2OH, NH2OH reacted with NH4+ to form N2H4, which was further converted to N2 subsequently, realizing the nitrogen removal.

结果表明：单级自养脱氮系统内6.72%的氨氮是通过吹脱等物化作用去除的，不超过6.02%的氨氮是通过传统硝化反硝化途径去除的，87.26%左右的氨氮是由自养脱氮途径去除的，自养脱氮反应起主要脱氮作用；在足够NO2存在且缺氧的条件下，单级自养脱氮系统内的出水氨氮浓度与空白反应器相当，NH4+并没有被亚硝化单胞菌以NO2为电子受体氧化为NO2-和N2等化合物而得以去除，可能是因为系统内不存在该代谢功能的亚硝化功能菌；单级自养脱氮系统内存在两条ANAMMOX反应途径：其中一条途径即NH4+在好氧条件下被氧化为NH2OH后，生成的NH2OH与系统内的NO2-在缺氧条件下被转化为N2O，N2O则进一步被转化为N2而实现氮的去除；另外一条途径即NO2-首先被还原为NH2OH，生成的NH2OH则与系统内的NH4+反应生成N2H4，N2H4继续被转化为N2而实现氮的去除。

A few spiro ligands have been successfully synthesized and applied in asymmetric catalysis .

手性螺环配体的合成及其在不对称催化反应中的应用是不对称合成和催化研究中重要的研究领域之一，一些手性螺环配体被合成出来并成功地应用于不对称催化反应中。

This imply that it is feasible to solve the lignin unhomogeneous problem through altering the reacting system and using the heterogeneous reaction during the modification.

由此说明在改性反应过程中，改变反应体系，利用多相催化反应过程来解决木素的不均一性是可行的。

The stereoselective chlorinating addition of double bondin polysubstituted cyclichexane via substrate control inTMCS -〓 system has been investigated in detail.

较系统地研究了九个典型的三取代卤代亲双烯的Diels-Alder反应，发现β-卤代亲双烯23，49，55，6la，61b均能较好地进行反应；而β-卤代亲双烯46a，46b，62则不能进行反应。

There are the non-saturated and carbon -carbon double keys and carboxyl group and special functional group derived from carboxyl group, so it is used in the polymerization and co-polymerization widely, can react with many kinds of the compounds, and produce a series of acrylic acid co-polymerization compound .

丙烯酸及其酯的化学结构中均有不饱和碳碳双键和羧基或羧基衍生的特性功能团，因此可广泛用于均聚反应和共聚反应，能与多种化合物反应，合成一系列丙烯酸共聚物。

The Pd-catalyzed Suzuki-Miyaura cross-coupling reaction is one of the most efficient methods for the construction of C-C bond.

Suzuki偶联反应是一种形成C—C键的有效方法，在有机合成中发挥着重要的作用。该反应具有反应条件温和、可适用多种活性官能团、受空间位阻影响不大、产率高以及芳基硼酸经济易得且对潮气不敏感等优点，因而得剑广泛应用。

Then we completed the first total synthesis of-Plakoridine A using Eschenmoser couping reaction as akey step. During the synthesis we found the choice of protecting groups and the configuration of the chiralcenter of the substrate play an important role to the key Eschenmoser reaction,so we think our successwould be of guide for synthesizing other polysubstituted pyrrolidines or piperidines.

在论文的第一章中，我们先以易得的对羟基苯乙酸乙酯为原料经多步反应制得了所需的β氨基酸酯，然后利用立体选择性的Aldol缩合反应和内酰胺化反应制得了Plakoridine Alactam，随后，以Eshenmoser缩合反应为关键步骤完成了生物碱-Plakoridine A的首次不对称全合成。

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。