查询词典 synthesis

Chiral amino-hydroxy compounds have been proved to be a very efficient class of ligands in a variety of catalytic asymmetric syntheses and chiral auxiliary synthesis catalyzed by metallic ions.

手性氨基-羟基化合物是一类用于催化不对称合成和手性辅助合成的重要配体。

As a new method for asymmetric synthesis, enantioselective organocatalysis has become more and more popular.

作为不对称合成的一个新方法，对映选择性的有机催化已经成为越来越普遍应用的方法。

The construction of a social philosophy as such relies on the creation of the synthesis of the Reformation and the Renaissance able to break the shackle of modern ontology that believe in the all-sufficiency of reason and the attainability of perfection in history.

这种融合揭示出理性自足和历史进步理念这两大现代性本体论核心概念所存在的问题，为预料、解释、和理解现代社会问题，尤其理解历史中善与恶一同增长这一基本事实，提供切合人性和历史经验的视域。

Objective: Augmenter of liver regeneration cloned from liver of weaning rat is a novel hepatic stimulator. It was reported that ALR mRNA expression was correlated with DNA synthesis of hepatocytes after partial hepatectomy, and could significantly promote the survial rate of intoxicated hepatitis rats.

目的：肝再生增强因子是从新生大鼠肝组织中克隆到的一种肝增殖刺激因子，其特异mRNA的表达与大鼠肝部分切除后肝细胞DNA合成密切相关，是一种特殊的促肝细胞分裂原，能特异地刺激肝细胞增殖，是肝再生的重要调控因子，能提高中毒性肝损伤动物的存活率，在肝损伤修复过程中发挥作用。

Asymmetric autocatalysis intrinsically has the following advantages: chiral amplification of production, high reaction efficiency, easy purification of the product, consecutive reaction, and is a new aspect of chiral synthesis.

不对称自催化具有手性自动放大、反应活性较高、产物处理较易、反应体系连续等特点，是不对称化学的一个新的领域。

Introduced the time-domain waveform synthesis and decomposition, and analysis of autocorrelation and cross correlation function.

详细说明：介绍了时域波形的合成与分解，以及分析的自相关函数和互相关函数。

Sol-gel Autoignition Synthesis, simple, self-cleaning and easy to undertake scale production, is the one of the prospective routes for manufacturing barium titanate powders.BaTiO3 nanopowders with the particle size 20-90nm, specific surface area 15m2/g, fine particle distribution, ratio of Ba/Ti 1.002 and with the dielectric constant more than 3000, were synthesized by SAS BaTiO3-TiCl4-ammonia-citric acid system.

本文自己组装的溶胶凝胶自燃合成系统，利用对Ba(NO_3)_2-TiCl_4-柠檬酸-氨水体系进行自燃合成研究，制备了具有纳米尺度的近球形BaTiO_3颗粒，粒径介于20-90nm之间，比表面积15m~2／g，分布范围较窄，Ba／Ti为1.002，器件介电常数最高达3000多。

Since C6 and higher alcohols are not obtainable by a direct biochemical route, it is proposed to synthesize these using known chemical reactions, wherein the raw material for synthesis is biogas and lower C2-C5 alcohols obtained by the inventive method wherein the amino acids leucine, isoleucine, and valine, or a mixture thereof, optionally obtained from yeast autolysate, is used as a biocatalyst at the stage of fermentation.

因为C6和更高级醇类不能通过直接生物化学途径制得，所以提出用已知的化学反应合成这些化合物，其中合成的原料为本发明方法制得的生物气和C2-C5醇类，其中任选从酵母自溶作用得到的亮氨酸、异亮氨酸和缬氨酸或其混合物的氨基酸在发酵阶段用作生物催化剂。

During that period, his research field covered many sections, such as speech analysis and synthesis, speech coding, automatic answering, speech recognition, echo elimination, sound operation interface, high efficiency search algorithm and identifiable HMM.

在贝尔实验室期间，他的研究领域覆盖了语音分析与合成，高音质、中低比特率语音编码，自动应答，语音识别，回声消除，无手控语音操作界面，高效搜索算法，有辨识力的HMM训练等等多个方面。

With the development of computer,communication and automatization technology,more and more importance is attached to synthesis safety control technology.

随着计算机、通信、自动化技术的迅速发展，综合性的安全控制技术将得到越来越多的重视。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。