| 1. | Photophysical properties of two d - - a chalcone dyes
型查耳酮类染料的光物理性质 |
| 2. | Synthesis of chalcone in water under microwave irradiation and phase transfer catalysis
微波辐射相转移催化下水相合成查尔酮 |
| 3. | Synthesis and characterization of schiff bases derived from chalcone and thiosemicarbazide
查尔酮缩氨基硫脲类希夫碱的合成与表征 |
| 4. | The role of chalcone synthase gene in the defense response of higher plants against pathogens
查尔酮合酶基因在植物防御反应中的调控作用 |
| 5. | Chalcone synthase ( chs ) is a key enzyme in the biosynthesis of all classes of flavonoids
查尔酮合酶( chalconesynthase ， chs )是类黄酮合成途径中的一个关键酶。 |
| 6. | Efficient amplification and sequence analysis of chalcone synthase gene from ginkgo biloba by thermal asymmetric interlaced pcr
方法快速克隆银杏查尔酮合成酶基因及序列分析 |
| 7. | In this research , we constructed the expression vectors , which contain exogenous gene chalcone systhase ( chs ) antisense gene of gerbera hybrida and transformed it into agrobacterium lba4404 through freezing - melting . an efficient regeneration system and transformation system have been estadblished on leaf discs of torenia fournieri lind
以蓝猪耳为主要研究对象，建立了高效的蓝猪耳离体再生体系，并以蓝猪耳叶片为转化材料，用带有目的基因的农杆菌感染建立了蓝猪耳的遗传转化体系。 |
| 8. | Gene engineering technology is more superior than the cross breeding and directive breeding technology with its short cycle , low cost and high benefit . though traditional breeding technology has been used for a long time . now the direct reports for the changes of the flower color by the chi ( chalcone isomerase ) gene are a few what we known .
关于花色结构基因查尔酮异构酶chi ( chalconeisomerase )基因对花色改变的直接报道很少，因此，本论文选用了chi基因为目的基因，以纯深红色和纯白色矮牵牛( petuniahybidavilm . )为材料，研究了chi基因的共抑制和反义抑制以及表达产物增加对花色改良的作用，并在花色改变植株中首次观察到花器官变异。 |
| 9. | The nonlinear properties of the type compound of chalcone have been studied using finite field ( ff ) / pm3 method . the influence of the molecular structures , the type of substituting group and its sites on organic conjugated molecular electronic and nonlinear properties have also been studied for different substituting group and its sites . the results proved that the substiuting group noucd improve obviously the nonlinear properties of the system
利用有限场ff pm3方法讨论了查尔酮类化合物的非线性光学性质，针对不同取代基和取代位置系统分析了分子结构、取代基的类型、取代位置对共轭有机分子电子性质及非线性光学性质的影响结果表明，取代基的引入可明显改善体系的非线性光学性质 |
| 10. | Abstract : the phenyl lithium , 2 - methoxy phenyl lithium and 2 , 4 - dimethoxy phenyl lithium reacted with the cinnamic acid to produce a corresponding chalcone in 75 % , 56 % , 50 % yield , respectively . 2 , 6 - dimethoxyphenyl lithium could not react with cinnamic acid , but reacted with methyl cinnamate to produce 2 ， 6 - dimethoxychalcone
文摘:苯基锂、 2 -甲氧基苯基锂和2 ， 4 -二甲氧苯基锂分别与肉桂酸反应以75 ， 65 ， 50的收率生成相应的查尔酮； 2 ， 6 -二甲氧基苯基锂与肉桂酸不发生反应，但能与肉桂酸甲酯反应生成2 ， 6 -二甲氧基查尔酮；类似的还制得了2 ， 4 ， 6 -三甲氧基查尔酮和2 ， 4 ， 4 ， 6 -四甲氧基查尔酮。 |
