查询词典 synthesis method

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。

The synthesis of sodium antimonate from antimony concentrates by chloridizing leaching-oxidation and hydrolysis decomposition-alkali synthesis process is investigated.

研究以辉锑精矿为原料、经氯化浸出-氧化-水解-加碱合成制取焦锑酸钠的工艺。

Validating the range-synthesis model of time memory, in the research on retrospective time memory, in experiment 1, we selected 14 recognizable news events from 1995 to 2000,in experiment 2, fifteen film episodes and eight news segments were broadcasted aperiodically to examine the retrospective time memory;results showed that, the range-synthesis model of time had predictive validity to retrospective time memory.

对时间记忆的分段综合模型的验证，在回溯式时间记忆的研究中，实验1选取1995年到2001年之间发生可辨别的新闻事件14项，实验2在2个月的时间内不定期地给被试播放15个影视片断和8个新闻事件，要求被试进行回溯式时间回忆；结果发现，时间记忆的分段综合模型对回溯式时间记忆具有预测效度。

A series of new synthesis methods of calix [4] arenes, were developed, and meticulously, the reaction of 25, 27-bisubstituted asymmetric synthesis in the lower rim was investigated.

用红外光谱，元素分析，质谱和核磁共振等手段确证了它们的结构，对某些结构较复杂的化合物通过2D-核磁共振进行了表征。

We can also produce the steel equipment to manufacture synthesis chlorhydric acid, that is: graphite synthesis furnace -graphite cooling tubes tower-graphite ejector pump.

本厂还可为用户生产用于制造合成盐酸的成套设备。即：石墨合成炉－石墨冷却管道系统－石墨降膜吸收器－尾气塔－喷射泵。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

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