合成物

The liqase was positively controlled by HAI and AI-2 to some extent. The lecithinase was negatively controlled by HAI-1, and the hemolysin was negatively controlled by both HAI-1 and AI-2. Special primers of luxS gene were designed from the luxS gene sequence of V. harveyi obtained from the GenBank, and the gene was amplified from a pathogenic strain V. harveyi VIB645 by PCR. The luxS gene was cloned to a cloning vector pUC, and was sequenced. It was found that the open reading frame is 519 bp. The similarity of the luxS gene from V. harveyi VIB645 to the published sequence of V. harveyi strain in GenBank was only 90%.

从GenBank中获取哈维氏弧菌中编码AI-2合成酶的luxS基因序列设计一对特异性引物从哈维氏弧菌VIB645中PCR扩增luxS基因，将luxS基因克隆于pUC载体并测序，发现其与GenBank中已发表的哈维氏弧菌的luxS基因序列相似性为90%，证明LuxS/AI-2系统在哈维氏弧菌不同的菌株中的具有一定的特异性，推测LuxS/AI-2系统可能与哈维氏弧菌的致病性或发光现象有关。

Aim To design and synthesize limonene analogues, and to assess their antitumor activity in vitro.

目的设计并合成柠檬烯类似物，并对其体外抗癌活性进行初步的评价。

The influence of AHLs and its analog on the biosynthesis of MAAs and scytonemin were studied in this paper.

研究了AHLs及结构类似物对水华蓝藻铜绿微囊藻FABHE905和集胞藻（SynechocystisspFACHB898MAAS和Scytonemins合成的影响。

The special structures and magnetics of the polynuclear coplexes offer a new way to design and synthesize molecular magnets.

多核配合物其独特的结构和磁性特点，为分子铁磁体的设计与合成提供了新的途径。

The effect of this matcher with DNA is very strong;the effective mode could be partial insertion effect.

笔者在此报道自合成的Sch iff碱配合物与DNA相互作用的电化学研究结果。1材料与方法1·1试剂与仪器CH1650电化学分析仪上

As to the synthesis of the materials for dielectric resonators, i.e., Ba2Ti9O20, the sprayed pyrolysis of metallo-organic precursors was found superior to coprecipitation process.

至於合成Ba2Ti9O20介电共振器的材料的方法，以有机金属物喷雾热解法较优於共沈法。

This approach avoided the long duration at high temperatures in traditional methods and unstable precursors in metathesis reactions.

这种合成方法不需要单质反应的高温及长时间处理，也避免金属氯化物与碱金属硫化物或硒化物之间的交换反应中不稳定的前驱物。

It is be- lieved that ring-closing metathesis has wide scope of application and excellent activity under mild con- ditions and is suitable for the synthesis of complex molecules.

在这些应用中，RCM具有底物范围宽、良好的反应活性、反应条件温和的优点，是一种合成复杂分子的有效手段。

The steps were as follows: trimethyl borate-10 was synthesized from boron-10 trifluoride-ether complex and sodium methylate,which was hydrolyzed to synthetize boric-10 acid.

首先采用三氟化硼-10-乙醚络合物与甲醇钠反应生成硼-10酸三甲酯，之后水解合成硼-10酸。

The synthesis path of 2-phosphono-butane-1,2,4-tricarboxylic acid is studied by using alkyl phosphate,butendioic acid dialklesters and methyl acrylate with the catalyst of sodium methylate.

论文摘要本文以亚磷酸二甲酯，顺丁烯二酸二甲酯，丙烯酸甲酯为原料，甲醇钠为催化剂，合成了 2-膦酸丁烷-1，2，4-三羧酸并对中间物及产物进行了 IR、13C，31P 核磁，MS 表征。

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。