查询词典 oxidation-reduction

The results show that it only takes 8 min for the reaction, when the initiator is potassium persulfate/sodium thiosulfate which forms an oxidation-reduction initiator system; N,N-methylene diacrylamide is as cross-linker; neutralization degree is 70%, under the microwave power of 360 W.

结果表明，在360W的微波辐射功率下，采用过硫酸钾与硫代硫酸钠的氧化还原引发体系，N，N-亚甲基双丙烯酰胺为交联剂，接枝单体的中和度为70%时，只需8min就可以完成纤维素基高吸水树脂的接枝共聚合成。

Oxidation-reduction reactions are important in the solubilization and precipitation of iron and manganese.

氧化还原反应在铁和锰的增溶和沉淀中具有重要作用。

In the pH=7.00 phosphate buffer solution, a detailed study of diethyl stilbestrol's electrical behavior has been done at the MWNT /graphite modified electrode. The results show that: the diethyl stilbestrol can generate a sensitive oxidation peak at about +0.375V and a weak reduction peak at about +0.095V on the MWNT /graphite modified electrode respectively.

在pH=7.00的磷酸盐缓冲溶液中，利用MWNT/石墨修饰电极，系统研究了该修饰电极对己烯雌酚的氧化，阳极扫描过程中，在+0.375V出现一个灵敏的氧化峰，阴极扫描过程中，在+0.095V出现一个还原峰。

The niobium suboxide powder was prepared by NbH reduction Nb2O5procedure, pressing to the mould, sintering and oxidation of the niobium suboxide anode, and niobium suboxide for capacitor anode with good electrical property was obtained.

摘 要：采用NbH还原Nb2O5工艺制备低价铌氧化物粉末，经压制成型、阳极烧结、阳极氧化工艺，获得电性能优良的低价铌氧化物电解电容器阳极。

This paper discusses the cause of sulphurous acid's difference between oxidation and reduction in the medium of acid and alkali, by applying the principle of normal electrode trend and thermodynamic coincidence reaction .

应用标准电极电势和热力学偶合反应原理对亚硫酸在酸碱介质中氧化、还原性不同的原因进行探讨。

The synthesis of nalbuphine hydrochloride from thebaine as starting material was through following processes:oxidation,high-pressure hydrogenation,acetylation,removing methyl of 3-methoxy,hydrolysis,condensation,reduction and finial salification.

以蒂巴因为起始原料，经氧化、高压氢化、乙酰化、氰化、脱3-位甲氧基的甲基、水解、缩合、还原、成盐，合成了盐酸纳布啡，总收率达18。

According to atom balance principle,for complicate oxidation -reduction reaction equation,based on many existing balancing methods,from the angle of unfixed equation,this paper introduces more simple balancing method which is called undetermined coefficient method,this method simplifies original results.

根据原子平衡原理，针对较为复杂氧化还原反应方程式，在众多已有的配平方法基础上，从不定方程的角度，给出了更为简捷的所谓"待定系数"配平法，从而简化了原有结

Preparation of the lateral chain-4-benzyloxy-3-hydroxy butyronitrile is introduced as the substrate, the REFORMATSKY reaction is performed, then obtains the dicarbonyl ester, in the structure of which containing a chiral hydroxyl group, then performs the chiral reduction, take off the benzyl group after the protection reaction with acetonylidene,then obtains the lateral chain by oxidation.

手性侧链醛的合成：采用-4-苄氧基-3-羟基丁腈作为底物，通过REFORMATSKY反应缩合得到含有手性羟基的二羰物酯，再手性还原，丙酮叉保护后氢解脱苄，最后氧化得到侧链醛。

Formyl-3-acetyl-4-methyl-5-carbobenzoxypyrrole (6) was synthesized via the selective oxidation of 2,4-dimethyl-3-acetyl-5-carbobenzoxypyrrole (5), which was produced from acetylacetic benzylester (1) via nitrosation, reduction and addition-cyclization with acetylacetone. The total yield of the product was about 34%.

以乙酰乙酸苄酯(1)为原料，经过亚硝化、还原、与乙酰丙酮加成环化生成2， 4-二甲基－3-乙酰基－5-苄氧羰基吡咯(5)，通过选择性氧化反应制得目标化合物2-甲酰基－3-乙酰基－4-甲基－5-苄氧羰基吡咯(6)，反应的总收率约为34%。

Acylamino compounds from AD were synthesized by cleavage of A-ring through NaIO4/KMnO4 oxidation, ring closure by amination, oximation with hydroxylaminechloride in C-17 position, and reduction of oxime in C-17 position and substitution with substituted acylchloride and carboxylic acids.

本文以AD为起始原料，经过NaIO4/KMnO4氧化裂解、胺解环合、羟氨肟化反应，在甾体17位形成肟，并将肟还原成胺，与取代酰氯和有机羧酸反应，合成了15个酰胺化合物。

If I didn't care what anyone thought, I would.....

如果我不介意别人怎么看，我会。。。。

In recent decades, Chile has mandated earthquake-proofing for new structures, requiring that materials like rubber and features like counterweights be built into the architectural designs to allow buildings to bend and sway during temblors rather than break.

在最近数十年里，智利已经为兴建防震的新土建结构而对建筑材料提出要求，需要的材料类似于橡胶，而特性就象运用在建筑设计中的平衡物体，一旦应用以后，当地震发生时建筑就能弯曲摇摆。