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The results showed that both continuous and intermittent aeration system could implement completely autotrophic nitrogen removal.

结果表明，连续和间歇2种曝气方式均可实现单级自养脱氮，在进水氨氮浓度为160 mg/L左右，温度30℃±2℃，pH值7.8～8.2，HRT为2 d，DO为0.8～1.0 mg/L的条件下，连续曝气系统的氨氮转化率和总氮去除率分别达到80%和70%。

The results indicated that the mixed monolayers containing FCA/ODA mixture with mole proportion of 1 to 1 possessed the best stability and the highest incompressibility.

第二部分：研究了不同pH值的亚硒酸溶液亚相上ODA单分子膜的性质，π-A等温线和dπ／dA-A曲线都表明碱性亚相上单分子膜的成膜性能较好。

Tetra-O-benzyl-D-glucose reacted with bromine to give glucosylbromide. It reacted with hydroxyl phenyl acetonitrile or hydroxyl benzaldehyde to give substituted ph- enylacetonitrile or substituted benzaldehyde.11 New stilbenes were synthesized possessing 2,3,4,6-tetra-O-benzyl-D-glucoside by condensation reaction with pheny lacetonitrile or benzaldehyde, which had potential biological activity and would be sieved in the future.

由2，3，4，6-四芐氧基葡萄糖作为中间体，首先制备出的溴代糖和含有羟基的苯甲醛和苯乙反应制备出含有糖的取代苯甲醛和取代苯乙，再和简单的苯乙或苯甲醛缩合反应生成11种具有潜在的生物活性且含有2，3，4，6-四芐氧基葡萄糖的类化合物，这些新化合物有待于进一步进行药理活性筛选。

Fig.7 Effect of acid on the emulsifying property of PKGM and casein in oil and water emulsion (O/W=1︰9) B 0.02% PKGM,0% citric acid; C 0.02% PKGM,with 1% citric acid contained in the water phase pH 2.3;D 0.1% casein,0% citric acid; E 0.1% casein,with 1% citric acid in the water phase pH 2.3

综上所述，适宜取代度的PKGM具有较强的乳化能力和较好的乳化稳定性能，同时表现出良好的抗盐和抗酸性能，其乳化用量少约为0.02%左右，可望成为食品等工业中的一种高效能的大分子乳化剂。

The quality of purified 2-KGA from its fermentation products was up to industrial standard. In addition, several hexoses, such as D-glucose and D-sorbitol can be utilized to synthesize 2-KGA by this newly-mixed culture. The growth and anabolism of the B529-V6 were studied in 4M〓 and 300M〓 fermentor respectively. The results showed that its growth and anabolism were affected by carbon sources, ratio of D-glucose and L-sorbose, nitrogen sources, growth factors, inoculum quality and culture condition including the initial pH value, temperature and ventilation.

新菌系B529-V6表现出了较强的高浓度L-山梨糖耐受能力、较高的底物代谢速率和较高的2-KGA转化能力，在8％山梨糖浓度的发酵培养基中培养48h，糖酸转化率较对照菌系提高了5.94％；山梨糖浓度提高至10％，其生长代谢受影响程度较小，且能不同程度地利用葡萄糖和山梨醇为底物，合成维生素C前体-2-酮基-L-古龙酸（2-KGA），其发酵产物2-KGA经反相高效液相色谱分析其质量符合工业化生产要求。

Results The activity, recovery rate of activity and half-life of immobilized SOD were 333 U/g, 86.32% and 43.8 d respectively. After storage at room temperature for 5 d, the relative activity of SOD was still more than 80%. The optimal reaction temperature of immobilized SOD was 45℃, and the activity retentions after being used for the first and second times were 70.12% and 51.72% respectively. Both the optimal pH values for SOD before and after immobilization were 6, while the Km values were 0.16 and 0.18 mmol/L respectively.

结果 固定化超氧化物歧化酶活力为333U/g，酶活回收率为86.32%，半衰期为43.8d；固定化酶室温保存5d后，相对酶活力仍保持在80%以上，最适反应温度为45℃，使用一次后回收率为70.12%，重复使用两次后回收率为51.72%；固定化酶与溶液酶在pH6时活性最强，Km分别为0.18mmol/L和0.16mmol/L。

Political Economy and Public Policy M.A., Ph.D.

政治经济学和公共政策

Educational Theory and Policy- M.A., Ph.D.

教育理论和政策

He serves as the chief editor of the China Review , an interdisciplinary journal on greater China. He studied for his LL.B. at Peking University and his Ph.D.

他于一九八二年获北京大学法学士学位，一九八四年获美国康乃尔大学政治学硕士学位，一九九零年获美国康乃尔大学政治学博士学位。

She holds three law degrees, including a Ph.D., from Hebrew University, and an LL.M.

他持有耶鲁大学法学院荣誉法学硕士学位和耶路撒冷希伯来大学法学院法学博士学位。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。