氧氢基

Papers in the experimental part of our literature considered on the basis of the experimental exploration, and podophyllotoxin intermediates with the structural characteristics of a simple pepper aldehyde as the starting material,α,β-unsaturated carbonyl compounds are selective reduction lithium aluminum hydrogen reduction reaction as the key steps to have the Knoevenagel condensation, peracetic acid epoxy between chlorine and alkaline hydrogen peroxide epoxy, DCC condensation esterification reaction of the three podophyllotoxin intermediates.

论文实验部分我们在综合考虑文献的基础上，经过实验摸索，并结合鬼臼毒素中间体的结构特点以简单的胡椒醛为起始原料，对α，β-不饱和羰基化合物具有选择性还原的锂铝氢还原反应为关键步骤，先后经过Knoevenagel缩合，间氯过氧苯甲酸环氧化，碱性过氧化氢环氧化，DCC缩合酯化等反应合成了3个鬼臼毒素中间体。

From the investigation into the visible spectra and performances on textile of these azo dyes, as acid dye, it was found that these dyes had deep coloring effects on dyeing wool or silk, and five of which could dye wool into black one at 3% o. w. f., especially the diazo dye derived from 2, 8-diamino-10-methoxy-5, 10-dihydrophenophosphazine 10-oxide and acet-J-acid, it could not only dye wool into black one but each fastness of the obtained dyed sample was good.

对这些已知结构的染料进行浸染染色，结果发现，它们作为酸性染料，在羊毛及丝绸纤维上染色时，能够获得比一般偶氮染料不宜获得的深色效应，其中5支染料得到黑色染样，尤其由2，8-二氨基-10-甲氧基-5，10-二氢磷杂吖嗪与乙酰J-酸形成的双偶氮染料得到黑色染样，其各项牢度都比较理想。

The FTIR spectroscopic analysis reveals that the chemical structure of biomass has changed obviously after hydrogenating extraction in which the content of alkyls and aromatic structures obviously increased and the oxygen functional groups, mainly including carbonyls and hydroxys, decreased.

傅里叶变换红外光谱分析表明，经过加氢萃取，生物质的化学结构发生了明显的变化，饱和烃基和苯环结构增加，含氧官能团减少。

Ten N-[2,4-disubstituted-5-(3-methy-2,6- di-oxo-4-trifluoromethyl-1,2,3,6-tetrahydropyrimidin-1-yl)phenyl]imides were designed and synthesized. Their structures were confirmed by 1H NMR, IR, HPLC/MS and elemental analysis.

设计并合成了10个未见文献报道的N-[2，4-二取代-5-(3-甲基-2，6-二氧-4-三氟甲基-1，2，3，6-四氢嘧啶-1-基)苯基]酰亚胺类化合物，其化学结构经1H NMR， IR， HPLC/MS和元素分析表征。

The complexes areneutral as shown by values of molar conductivity in aqueous solution, namely,〓 The crystal structure determinations show that, in complexes, metal ions werecoordinated by four nitrogen atoms and form slightly distorted square planar configuration,relationship between fluorene ring plane and coordination plane is similar to those betweenpeptide planes of β-folding in proteins. The complex molecules linked by hydrogen bonds formone dimension chain or two dimension network structure.

摩尔电导测定表明他们都是二氧四胺中酰胺氮去质子化后形成的产物。X-射线衍射晶体结构测定表明〓的铜、镍配合物的配位多面体都是稍微畸变的平面正方形，配合物分子中芴基平面与配位平面的关系类似于蛋白质β-折叠结构中肽平面之间的关系，配合物分子之间通过氢键连接成一维链状或二维网状结构。

The analysis of decomposition mechanisms of the catalyst surface revealed that one of the mechanisms is that activated gas phase O2 captures the hydrogen of the organic pollutants to produce free radicals, which then initiate the catalytic reaction, and produce CO2 and H2O ultimately; and the other mechanism is that the activated organic compounds attack the crystal lattice oxygen, which reduces the valances of the transition metals, then the oxidant of the oxygen oxidizes the transition metals to high valances, which realize the self oxidation-reduction of the catalyst.

催化剂表面有机物降解的机理分析表明，一种反应机理为气相中的O2活化后直接夺取有机污染物的氢，产生自由基，并引发催化反应，最终生成CO2和H2O；另一种反应机理为活化后的有机物直接进攻催化剂的晶格氧，并且使得过渡金属由高价态变为低价态，反应气中的O2再将低价态的金属氧化为高价态，实现催化剂自身的氧化还原循环。

Determination of methyl ethyl ketone and sec-butanol by gas chromatography was reported.

丁酮在合成抗氧防胶剂N，N'-二仲丁基对苯二胺过程中是过量的，回收利用可以节省不少成本，但其可以加氢生成仲丁醇，有必要测定回收丁酮中仲丁醇的含量。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。