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Four different ionic liquids, BF4, BF and PF6 were investigated, arid PF6 showed the best effect when used as the reaction media, giving the highest yield in the shortest reaction time. Promoted by KF in PF6, N-aryl or N-alkyl monosubstituted sulfonamides could react with various activated halides and unactivated primary halides smoothly. Reactions were performed at 85℃ for 2~10 hours, and thirteen N-alkylation products were obtained with 70%~97% yields. Moreover, the ionic liquid recovered could be reused for three times with no appreciable decrease in yield and reaction rate.

结果表明,以PF6为反应介质时显示出了最好的效果,反应的时间最短,收率最高。N-芳基或N-烷基单取代的磺酰胺和各类不同结构的活化的卤代烃和未活化的一级卤代烃在PF6中KF作用下,85℃反应2~10h,以70%~97%的优良收率得到了13个N-烷基化产物,而且离子液体回收使用3次后效果未降低。

Firstly, a series of organic molecules which use phthalimido group as electron acceptor, N as electron donor, COO~- as eletrofugal group were synthesized based on SET-promoted photocyclization processes. These compounds were irradiated by 500 W ultraviolet under nitrogen atmosphere in room temperature. After filtration of the photochemical character of these molecules, substrate S1 and S2 were selected as appropriate model reactants. Secondly, the monosubstituted derivatives at the 6-position ofβ-cyclodextrin were synthesized as chiral template of photocyclization.

首先,以单电子转移机理为指导,设计了一系列以邻苯二甲酰亚胺基为电子受体、N为电子给体、羧基为离去基团的光环合反应底物,这些化合物在氮气保护下以500瓦紫外光室温下进行光照反应,对这一系列的分子的反应情况进行了研究与筛选,最终选择底物S1和S2作为研究光环合反应中立体控制方法的模型底物;其次,又合成了一系列6-位单取代β-环糊精,以此作为光环合反应的手性模板。

Results Fibroblast ceils were divided into three groups, and cell proliferation was inhibited in the low-dose group, but promoted in the middle-dose group, while the collagen synthesis was inhibited in the middle-dose group, but pro- moted in the high-dose group.

结果激光照射剂量由低至高可分为3个剂量段,激光强度在第一剂量段时的生物调节效应主要表现为抑制细胞增殖,在第二剂黾段时则能促进细胞增殖并抑制胶原合成,在第三剂量段时间则可促进腔原合成,且每个剂量段内的激光生物调节效应与照射剂量间大致单线性相关。

Magnesium at concentrations between 3?15 g/L in growth media promoted the growth of mycelia of A.

g/L的Mg浓度对于蜜环菌菌体的生长有促进作用。

Logistic regression analysis and multiple factor variance analysis showed clearing degree and H2O2 concentration promoted HPV6.11/16.18 infection and speeded infection process. But pyocyte, mycetes, neuraminidase had no dependability with HPV6.11/16.18 infection.

Logistic回归和多因素方差分析结果表明,清洁度和H2O2浓度与HPV6.11/16.18感染和加速感染进程密切相关,与脓细胞、霉菌、唾液酸苷酶并无相关性。pH值、白细胞、霉菌、滴虫、线索细胞、白细胞酯酶与HPV6.11/16.18感染虽无相关性,但在引起HPV6.11/16.18感染方面起到重要作用。

Results the positive rate of hpv6.11,hpv16.18,hpv6.11/16.18 were 52(25.4%)、45(22.0%)、26(12.7%) respectivelys. logistic regression analysis and multiple factor variance analysis showed clearing degree and h2o2 concentration promoted hpv6.11/16.18 infection and speeded infection process. but pyocyte, mycetes, neuraminidase had no dependability with hpv6.11/16.18 infection.

结果 205例疑似尖锐湿疣感染患者检出hpv6.11、hpv16.18、hpv6.11/16.18阳性例数为52、45、26.logistic回归和多因素方差分析结果表明,清洁度和h2o2浓度与hpv6.11/16.18感染和加速感染进程密切相关,与脓细胞、霉菌、唾液酸苷酶并无相关性。ph值、白细胞、霉菌、滴虫、线索细胞、白细胞酯酶与hpv6.11/16.18感染虽无相关性,但在引起hpv6.11/16.18感染方面起到重要作用。

When removing the endogenous estrogen from culture medium, both hesperetin and naringenin significantly promoted the proliferation of MCF-7 cells.

同时,橙皮素和柚皮素能部分拮抗E_2的促增殖作用,说明橙皮素和柚皮素具有雌激素样活性。

If want to changed the stat, must be operatived decrease secondary injury, limited proliferation rate of neuroglial cell, promoted neuron regeneration,after spinal cord injury.

只有有效的降低脊髓损伤后的继发性损害、限制神经胶质细胞的增生速度、促经神经元的再生、才能防止脊髓坏死空洞和胶质瘢痕的形成。

Results: Fujian Tablet could increase the expression of neurotropic factor and decrease that of inhibitory factor. It promoted proliferation, migration, differentiation of neural stem cells, axonal growth and synapse formation remarkably.

结果:复健片可增加神经生长营养因子表达,减少抑制因子表达,对神经元增殖、迁移、分化,轴突延伸、突触形成等有明显促进作用。

The carbothermal reduction nitridation reaction was promoted greatly after the milling of alumina for 20 hours.

研究了氧化铝球磨对碳热还原反应合成氮化铝的作用。

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