酸化的

In this thesis, investigations focused on heteropoly acids-catalyzed C-C and C-N bond formation reactions and the synthesis of xanthenediones and acridinediones under thermal conditions are described.1.12-Phosphotungstic acid has been used as an efficient,eco-friendly,and air- and moisture-stable catalyst to promote the direct dehydrative substitution of the hydroxy group of benzylic and allylic alcohols with variousβ-dicarbonyl compounds.

本篇论文主要描述了杂多酸催化下的C-C和C-N键的生成，以及无溶剂直接加热下合成十氢氧杂蒽二酮和9-芳基十氢吖啶二酮。主要内容如下：1。在磷钨酸催化下，1，3-二羰基化合物与醇能够顺利偶合，脱除一分子的水，生成烷基化的1，3-二羰基化合物。反应在甲苯中进行时，二芳基甲醇能与各类1，3-二羰基化合物反应，成率很高；但对于1-苯乙醇，只能得到很低的产率。

The introduces binaphthyl bisphenol monomer on side-chain benzene ring of sulfonic group on molecular level, prepares sulfonated poly aryl ether with sulfonic group only on naphthalene ring of side chain, so that ensures chemical stability of main chain with high molecular weight, while having no influence on mechanical property thereof.

本发明从分子水平出发，将磺酸基在侧链苯环上的联萘双酚单体引入，制备仅在侧链苯环上有磺酸基的磺化聚芳醚，从而保证了高分子主链的化学稳定性，且不会影响其优异的物理机械性能。

Compared with the traditional two-phase anaerobic process, there are more microbe populations in the hydrolytic acidification reactors or anaerobic reactors than those in the single phase, the combined anaerobic reactors appeared more stable, and the bionomic condition would be easily realized.

与两相厌氧工艺相比，复合厌氧法中，水解酸化反应器和厌氧反应器中的菌群种类要比单一的产酸相或甲烷相中的多，所构成的微生态系统更为稳定，所需要的生态条件比较容易实现。

Factors of esterfication of mixed dibasic acid were studied: alcohol acid mol ratios, the content of the catalysts, the reaction time and the content of water carrier.

实验考察了混合二元酸酯化的影响因素：醇酸摩尔比、催化剂用量、反应时间以及带水剂的种类和用量对酯化率的影响。

Organic pollution may cause dissolution and pyrite-stain of foraminiferal test. This can be attributed to the acid and reductive condition formed by over high organic content.

有机质污染在有孔虫特征上主要反映为壳体的溶蚀和黄铁矿化，这是由于过量的有机质导致介质的酸化和还原条件。

For chemical processes, focus is on the relation between the added concentration and the anti-scale effect of acidification, inorganic phosphate and organic phosphonate and comparing the anti-scale effects among different kinds of chemicals.

对于化学阻垢技术，着重点放在研究酸化、无机磷酸盐阻垢剂及有机膦酸盐阻垢剂的投加浓度与阻垢效果的相关关系，并且比较不同阻垢剂的阻垢效果的差异。

The optimum processing conditions for the preparation of sodium copper chlorophyllin from saponified paste of pine needles are as follows: sodium chlorophyllin is clarified by adding water ratio of water to paste 5:1

从皂化的松针软膏制备松针叶绿索铜钠的最适工艺：叶绿酸钠澄清用水量为松针软膏重量的5倍；叶绿酸钠沉淀时，20％浓度硫酸铜溶掖用量为松针软膏重量的10—11％。

American Heart Association has come to tea is "rich in eliminating free radicals, with the role of acid and flavonoids, one of the drinks, can reduce the incidence of myocardial infarction," the conclusions of the results of their research show that a particular cup of tea free radicals, the even more garlic, broccoli, carrots, cabbage can play a small role of acid-fast.

美国心脏学会曾经得出红茶是&富含能消除自由基，具有抗酸化作用的黄酮类化合物的饮料之一，能够使心肌梗塞的发病率降低&的结论，其研究成果表明，一杯红茶对特定的自由基来说，甚至比大蒜、西兰花、胡萝卜、小卷心菜更能发挥抗酸化作用。

Cellulose acetate butyrate,which is widely applied as coatings additive, is synthesized in the heterogeneous system. The activation is required because of the strong hydrogen intramolecular and intermolecular bondings and the regulation of the crystalline region in cellulose microfibrils.

中文摘要纤维素醋酸丁酸酯（Cellulose acetate butyrate是一种广泛应用于涂料工业的添加剂，由于纤维素具有分子内与分子间强氢键作用以及纤维素纤维的局部规整的结晶序列等特征，一般纤维素在酯化反应前都需要进行预活化处理，工业上纤维素醋酸丁酸酯的合成方法一般都在非均相体系中进行的。

An ivestigation on the influence of the ferulic acid and p hydroxybenzoic acid on the nitrogen mineralization in the soil was carried out.

实验研究阿魏酸、对羟基苯甲酸对土壤中的氮矿化的影响，分析了麦秸和麦秸在土中腐解时产生的酚酸与土壤中氮矿化作用的相关性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。