| 1. | Atpase activity reached to the highest when both mg2 + and k + were present in the reaction medium . 2 X ”和ugh之间有一定的协同作用,二者同时存在时,酶的活力最高。 |
| 2. | This paper reviews recent progress in transition metal - catalyzed organic reactions using supercritical carbon dioxide as reaction media 摘要主要综述了近年来超临界二氧化碳作为反应介质过渡金属催化有机反庆的最新进展。 |
| 3. | The optimum conditions ( enzyme source , enzyme concentration , acid , acid concentration , reaction medium and reaction temperature , et al ) were screened out 对脂肪酶酶源、脂肪酶浓度、羧酸、羧酸浓度、温度、溶剂等反应条件进行筛选。 |
| 4. | The selectivity and activity of enzyme in the reaction media , especially in ionic liquids and supercritical liquids was reviewed in the paper 文章以溶剂分类,探讨溶剂,特别是引入新的反应介质离子液体和超临界流体对酶催化活性和选择性的影响。 |
| 5. | The formation mechanism of cds nanowires was also discussed . only short cds nanorods with low aspect ratio were obtained in the case of only using ethylenediamine as the reaction medium 首次以聚乙烯醇( pva )为基体采用溶剂热方法成功制备了cds纳米线,表征了其结构性能,并讨论了其制备机理。 |
| 6. | 4 . cds nanowires were synthesized by the solvothermal reaction of cd2 + - dispersed poly vinyl - alcohol ( pva ) with ethylenediamine as reaction medium . the structure and optical properties of cds nanowires were characterized 溶剂中水含量的增加致使cds纳米棒较难生成,这是因为水的存在影响了乙二胺同cd ~ ( 2 + )离子的配位。 |
| 7. | Using non - proton organic solvent as reaction medium , then reactions in definite conditions after reactants being separated 、 dryed 、 weighed and compared productivity , test the new compound by dsc 将槲皮素和大豆卵磷脂共溶于不同非质子性溶剂中,在一定条件下进行反应,然后将反应物分离、干燥、称重,比较收率,并用dsc进行分析。 |
| 8. | The research has been in progress to second step of characteristic and mechanism to hydr othermal preparing the powder aspect , and research has been in progress by pressure to in the experiment , time and the influence to the product capability of reaction medium 第二步对水热法制备粉体的特点和机理进行了探讨,对实验中的压力、时间、反应介质对产品性能的影响进行了研究。 |
| 9. | However the binary catalysts system favors low residue content . it was found that the residue content were remained at a low level with ethylene glycol as the reaction media and 6 % ( by mass ) of sulfuric acid as the catalyst in the presence of phenol . the contents of lipophilic products were investigated 经凝胶色谱法测定表明,以浓硫酸苯酚为催化剂、乙二醇为反应介质的反应体系,所得到液化产物的平均相对分子质量最低, m _ w为806 , m _ n为799 。 |
| 10. | Monodisperse ( coefficient of variation 5 % ) polystyrene microspheres in the size range of 1 . 0 ~ 10 m are prepared by dispersion polymerization in ethyl alcohol reaction media using polyvinylpyrrolidone ( pvp ) as a steric stabilizer and 2 , 2 ' - azobisizobutyronitrile ( aibn ) as an initiator in suitable condition 摘要以聚乙烯吡咯烷酮为分散剂、无水乙醇为反应介质、偶氮二异丁腈为引发剂,采用分散聚合的方法,通过优化反应条件,成功制备出了粒径范围为1 ~ 10 m不同粒径级别的单分散(分散系数5 % )聚苯乙烯微球。 |