2-nitro-10-hydroxy-5,10-dihydrophenophosphazine-10-oxide can be reduced easily with hydrous hydrazine by Fe/MgO catalyst.The reduced compound was detected by IR and HNMR.It showed that the reduction yield is 94%.The c...2-nitro-10-hydroxy-5,10-dihydrophenophosphazine-10-oxide can be reduced easily with hydrous hydrazine by Fe/MgO catalyst.The reduced compound was detected by IR and HNMR.It showed that the reduction yield is 94%.The catalyst can be used in reduction for three times.This reduction method has a lower cost,less pollution to environment and suit to the industrializing demand for dye intermediate production.展开更多
According to the equilibrium constant of copper-1,10-phenanthroline,[Cu（phen）]2+solution（aq） was prepared and the surface of the graphite electrode was modified by adsorbed [Cu（phen）]2+ solution,the electrochemi...According to the equilibrium constant of copper-1,10-phenanthroline,[Cu（phen）]2+solution（aq） was prepared and the surface of the graphite electrode was modified by adsorbed [Cu（phen）]2+ solution,the electrochemical properties of [Cu（phen）]2+were investigated by cyclic voltammetry.The results show that the redox process of the complex is a reversible,one-elextron reaction and is controlled by the diffusion.展开更多
目的:研究5-氮杂-2’-脱氧胞苷(5-aza-2’-deoxycytidine,5-Aza-dc)对涎腺腺样囊性癌(Adenoid cystic carcinoma,ACC)细胞中抑癌基因第10号染色体同源丢失性磷酸酶张力蛋白基因(Phosphatase and tensin homology deleted on chromosomet...目的:研究5-氮杂-2’-脱氧胞苷(5-aza-2’-deoxycytidine,5-Aza-dc)对涎腺腺样囊性癌(Adenoid cystic carcinoma,ACC)细胞中抑癌基因第10号染色体同源丢失性磷酸酶张力蛋白基因(Phosphatase and tensin homology deleted on chromosometen,PTEN)的影响及可能的机制。方法:利用RT-PCR检测ACC细胞经甲基转移酶抑制剂5-Aza-dc作用后,PTEN基因mRNA的表达水平;Western blot检测5-Aza-dc干预对PTEN蛋白表达的影响。结果:在一定时间内,经5-Aza-dc作用后,ACC细胞中PTEN基因mRNA及蛋白表达水平逐渐增加,且差异有统计学意义(P<0.05),PTEN mRNA表达水平改变与PTEN蛋白的表达基本一致。结论:ACC细胞系中PTEN的低表达可能与PTEN基因启动子区甲基化状态有关。展开更多
文摘2-nitro-10-hydroxy-5,10-dihydrophenophosphazine-10-oxide can be reduced easily with hydrous hydrazine by Fe/MgO catalyst.The reduced compound was detected by IR and HNMR.It showed that the reduction yield is 94%.The catalyst can be used in reduction for three times.This reduction method has a lower cost,less pollution to environment and suit to the industrializing demand for dye intermediate production.
文摘According to the equilibrium constant of copper-1,10-phenanthroline,[Cu（phen）]2+solution（aq） was prepared and the surface of the graphite electrode was modified by adsorbed [Cu（phen）]2+ solution,the electrochemical properties of [Cu（phen）]2+were investigated by cyclic voltammetry.The results show that the redox process of the complex is a reversible,one-elextron reaction and is controlled by the diffusion.
