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This paper reviews the recent progress of all kinds of reductive amination methods and their ap-plications in organic synthesis, particularly emphasis on the introduction to the reductive amination with high efficiency and high selectivity.

综述了近几年来各种还原胺化方法的研究进展及其在合成中的应用，尤其对高效和高选择性的还原胺化进行了重点介绍

The experimental results showed that the COD and ammonia removal efficiency reach 85% and 92% respectively.

研究结果表明，低DO浓度下COD和氨氮的平均去除率分别为85%和92%。

The dependence of current efficiency on concentration of pyruvic acid, ammonia, and sal ammoniac.η value reached 90% at an optimum condition.

在优化的工艺条件下，电合成丙氨酸电流效率达到90%，比文献报导的64%提高了许多。

The results show that caramel produced by liquefaction of high temperature, saccharification of low temperature and ammoniation of ammonium sulfate has excellent colour rate and high p roduction efficiency.

本文就是对采用甘薯淀粉生产焦糖色素的工艺进行研究，用正交实验法确定了在高温液化、低温糖化和硫酸铵氨化的条件下生产出的焦糖色素色率好、收率高。

In order to improve the nutritive value of corn straw, enhance its using efficiency and reduce its pollution to environment, focus on its structure of natural fiber, especially the protective screen of lignose in it, the ammoniation and solid-state fermentation of corn straw to produce feeding protein were studied respectively.

摘 要：为增加玉米秸秆的营养价值，提高资源利用效率，降低对环境的污染，针对玉米秸秆这种天然纤维性材料的立体结构，尤其木质素的屏障作用，对玉米秸秆进行了氨化处理和固态发酵生产饲料蛋白的研究。

This phenomenon was discussed and the mechanism was further comfirmed by the addition of acid for promoting of photoinitiated efficiency by the quaternary ammoniation of one of amines in piperazine.

对上述现象进行了讨论，并通过加入酸类化合物使其中一个胺发生季胺盐化，用以改进光引发效率来进一步证实文中所讨论的机制。

The resultsindicatedthat :combination of urea and so-da had very high effect of increasingthe crude protein content in straw,combination of over 5 percent quickli me and urea hadthe highest efficiency,4 ti mes of that of the ammoniation method with5 percent urea...

结果表明：尿素与氢氧化钠的组合对提高秸秆粗蛋白含量极为有效，5%以上的生石灰与尿素组合提高效率最高，为单纯5%尿素氨化法的4倍。建议生产中根据需要确定尿素剂量。

Livestock wastewater contains not only high concentration of organics, but also amino acid. This paper studied efficiency of UASB applied in such wastewater, and the influences of environmental and operation conditions on ammoification rate were analyzed. Results show that suitable pH for the bacterium had a wide range from 6. 5 to 8, and pH 7 was the best. A positive correlation was between temperature and ammonification rate, while 38℃ was prefered from an economic point of view. Ammonification rate increased with the influent concentration of increase while there's a contrary situation when the organic load increase.

因畜禽废水除了含有大量的有机物，还含有一定量的氨基酸，因此，研究利用UASB处理畜禽废水，在不同环境条件和工况条件下对氨化率的影响，结果表明：氨化菌适应的pH值范围较宽，在6.5~8.0范围均可以较好的生存，其中以7.0为最佳；温度与氨化率基本成正相关关系，从经济等多种角度考虑，中温阶段38℃为最适宜；氨化率随进水浓度的增加而增加；进水有机负荷越大，氨化率越小。

The test indicates that reaction temperature is higher, reaction time is longer and nitrogen content is lower than those when technical lignin material is used. Efficiency of ammonification with peroxide of hydrogen as an oxygenant is higher than that with oxygen as an oxygenant.

实验表明天然木质素原料氨化的反应温度比工业木质素高，反应时间较长，氨化产物的含氮量较低（含氮量为3.9％-6.7％；用过氧化氢作氧化剂比用氧气作氧化剂，氨化效率高。

Adjusting pH to 12, air-liquid ratio to the range of 3 000～4 000 and temperature to the range of 35～45℃, after the washing wastewater from deposited ammonium carbonate that the initial concentration of ammonia nitrogen was 1 570 mg/L was treated by ammonia stripping, the residual concentration of ammonia nitrogen was controlled to below 100 mg/L and removal efficiency reached to over 94%.

发现pH、温度和气液比是氨氮去除效率高低的关键因素，废水初始浓度对去除率无影响。调节废水pH=12，气液比在3 000~4 000，温度在35~45℃范围，浓度为1 570 mg/L的碳铵沉淀洗涤废水经氨吹脱处理可使出水残余氨氮浓度控制在100 mg/L以下，去除率达94%以上。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。