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Some preparation methods of galanthanime including extraction and organic synthesis were summarized, such as extraction from narcissus, galanthus woronawii losink, and lycoris radiate and countereurrent chromatography refining, and enzymatic extraction from hyacinths orientalis, as well as the organic synthesis using 3,4-dimethoxybenzaldehyde, methyl 3,4,5-trihydroxybenzoate, isovanilin and tyramine as raw material.

概述了加兰他敏从黄水仙、沃氏雪花莲中提取、石蒜中提取及逆流色谱法精制、喇叭水仙酶法中提取的方法、工艺；以3，4-二甲氧基苯甲醛、3，4，5-三羟基苯甲酸甲酯和异香草醛和酪胺为起始原料合成加兰他敏的方法。

In order to explore the effect on DNA synthesis and DNA double-strand breaks by magnetic field, We chose a relatively simple uniform magnetic field, study the affect on DNA synthesis and DNA double-strand breaks by such magnetic field, conclused that this impact related to magnetic field strength.

为了研究磁场对DNA的合成速度和DNA双链断裂的影响，我们选择比较简单的均匀磁场，从理论上探讨了此种磁场对DNA合成速度和DNA断链的影响，得到其合成速度改变和双链断裂程度与磁场强度大小有关。

Study on the Synthesis of Uracil Derivatives Ⅱ.Study on the Synthesis of 1, 4-Dihydro-s-Tetrazine Derivatives and Their Antitumor Activity

论文标题：Ⅰ。药物中间体尿嘧啶衍生物合成研究Ⅱ。1，4-二氢-s-四嗪衍生物的合成及抗肿瘤活性研究

Emphasis is laid on the research progress in the field of new generation speech synthesis technology contributed by USTC iFlytek speech laboratory, which includes integration articulatory and acoustic features for improving the flexibility of acoustic parameter generation; a minimum generation error criterion proposed to replace maximum likelihood for improving synthesized speech quality; use of unit selection and waveform concatenation to replace parametric synthesizer, thus effectively avoiding the limitation of speech quality in HMM based parametric synthesis.

重点介绍中国科学技术大学讯飞语音实验室在发展新一代语音合成技术中的贡献，包括：融合发音器官参数与声学参数，提高声学参数生成的灵活性；以最小生成误差准则取代最大似然准则，提高合成语音的音质；使用单元挑选与波形拼接方法取代参数合成器重构，从根本上改善HMM参数语音合成器在合成语音音质上的不足。

The results indicated that the treatment of increasing top dressing N applying ratio could increase endogenous hormones zeatin riboside ZR(subscript S, isopentenyl adenosine contents and decrease abscise acid contents in flag leaves, and improve photosynthate synthesis, which could increase sucrose contents in flag leaves and supply aplenty of carbon sources for starch synthesis in grains.

结果表明，氮肥后移的处理旗叶中ZR、iPAS含量的增加及ABA含量的减少，有利于光合产物的合成；蔗糖含量较高，为籽粒合成淀粉提供了充足的碳源物质。

Supported 12-Phosphotungstic Acid and Its Salts as Catalysts for the Synthesis of Fructone and Fructone-B;2. Their catalytic activities were measured by synthesis of fructone-B from ethyl acetoacetate and 1,2-propanediol.

制备了一系列以脱铝超稳Y沸石为载体的磷钨酸及其铯盐催化剂，考察了催化剂在以乙酰乙酸乙酯和1，2-丙二醇为原料催化合成草莓酯反应过程中的性能。

In chapter 1,we discuss the certainty of synthesis of interest.Interest is afunction of demand,power and information.The foundation of synthesis ofeconomic interest is complicated economic demand and complicatedeconomic power.

第一章首先由利益的三个内在要素——需要、信息和权力——引出利益综合的必然性：非对称的需要、信息与权力结构，进而，分析经济利益综合的基础：综合经济需要和综合经济权力。

The synthesis mechanism of Al_(13)in the process of electrolysis was discussed,the effects of electrolysis voltage,the original concentration of Al~(3+),the circulation mixing rate of the electrolyte and the exchanging frequency of the electrodes on the synthesis velocity of Al_(13),ratio of Al_(13)in total Aland the electrolysis time were studied.

本工作对电解过程中Al_(13)的形成机理进行了探讨，并研究了电解电压、Al~(3+)的初始浓度、电解液的循环搅拌速度和阴阳电极的互换频率对Al_(13)的合成速度、Al_(13)占总铝的比率及电解所需时间的影响，得出了电解法制备Al_(13)的最佳工艺条件：电极互换频率为1次·min~(-1)、电解液中Al~(3+)的初始浓度为0.5000mol·L~(-1)、电解电压为12V和0.5L·min~(-1)的电解液循环搅拌速度，在此条件下电解125min可制得碱化度为82.0%，Al_(13)占总铝的比率达91.2%的液体产品。

ABSTRACT The thesis aims at the studies on the total synthesis of α-alkylidene -β-hydroxy-γ-butyrolactones. It consists of the following three parts: Part Ⅰ: Review: Some studies on the total the synthesis of α-methylene-γ-butyrolactones, polysubstitution-γ-butyrolactones and α-alkylidene-β-hydroxy-γ-butyrolactones, were reviewed.

本论文以α-亚烷基-β-羟基-γ-丁内酯类天然产物的全合成研究为主，包括三个部分：第一部分：文献综述：着重介绍了α-亚甲基-γ-丁内酯萜类，多取代-γ-丁内酯类和α-亚烷基-β-羟基-γ-丁内酯类天然产物的全合成研究工作。

Catalytic aziridination and amidation reactions are two important reactions in organic synthesis and useful building blocks for organic synthesis, which make them attractive synthetic targets in their own right.

催化氮杂环丙烷化及酰胺化反应是有机合成中的两类重要反应，是有机合成之砌块，其合成方法是重要的研究课题。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失