A voltammetric study of the interaction of neutral Red(NR) with DNA at a gold electrode in a phosphate buffer solution is described. After adding DNA in an NR solution, the reduction peak current of NR decreases. The ...A voltammetric study of the interaction of neutral Red(NR) with DNA at a gold electrode in a phosphate buffer solution is described. After adding DNA in an NR solution, the reduction peak current of NR decreases. The binding mechahisms of NR to DNA in different pH ranges are different. The reduction peak potential of NR in a pH 7.0 phosphate buffer solution in the presence of DNA shifts positively, indicating that the binding of NR to DNA is intercalation action, but at pH=6.0 the reduction peak potential of NR shifts negatively, indicating that the binding of NR to DNA is electrostatic action. The formed complexes are DNA-NR when [NR]/[DNA]<0.18 and DNA-3NR when [NR]/[DNA]>0.35, respectively.展开更多
1 Overview and Current Status of Utilization of China's Natural Gas Resources
Natural gas as a green fuel with low carbon content can comply with the trend in the epoch for development of non carbonaceous energy ...1 Overview and Current Status of Utilization of China's Natural Gas Resources
Natural gas as a green fuel with low carbon content can comply with the trend in the epoch for development of non carbonaceous energy source, and has a lot of advantages such as its abundance in resources, convenience in applica tion and cost competitiveness. The application of natural gas as a premium fuel has become a focus pursued aggres sively by international players, and the perspectives for gas demand growth will be better than that for oil globally.展开更多
Vaginal irregular bleeding refers to in the non-menstrual period, and womens reproductive system will appear intermittent or continuous bleeding, mainly to leucorrhea, but also appear blood and other symptoms, and som...Vaginal irregular bleeding refers to in the non-menstrual period, and womens reproductive system will appear intermittent or continuous bleeding, mainly to leucorrhea, but also appear blood and other symptoms, and some women in the menstrual period of excessive blood is also very easy to be infected. However, the cause of irregular massive bleeding in the gynecological outpatient department is more complicated, so the early diagnosis should be made according to the etiology, and the targeted treatment should be carried out according to the clinical manifestations. Now the irregular vaginal bleeding in clinical gynecology is summarized.展开更多
文摘A voltammetric study of the interaction of neutral Red(NR) with DNA at a gold electrode in a phosphate buffer solution is described. After adding DNA in an NR solution, the reduction peak current of NR decreases. The binding mechahisms of NR to DNA in different pH ranges are different. The reduction peak potential of NR in a pH 7.0 phosphate buffer solution in the presence of DNA shifts positively, indicating that the binding of NR to DNA is intercalation action, but at pH=6.0 the reduction peak potential of NR shifts negatively, indicating that the binding of NR to DNA is electrostatic action. The formed complexes are DNA-NR when [NR]/[DNA]<0.18 and DNA-3NR when [NR]/[DNA]>0.35, respectively.
文摘1 Overview and Current Status of Utilization of China's Natural Gas Resources
Natural gas as a green fuel with low carbon content can comply with the trend in the epoch for development of non carbonaceous energy source, and has a lot of advantages such as its abundance in resources, convenience in applica tion and cost competitiveness. The application of natural gas as a premium fuel has become a focus pursued aggres sively by international players, and the perspectives for gas demand growth will be better than that for oil globally.
文摘Vaginal irregular bleeding refers to in the non-menstrual period, and womens reproductive system will appear intermittent or continuous bleeding, mainly to leucorrhea, but also appear blood and other symptoms, and some women in the menstrual period of excessive blood is also very easy to be infected. However, the cause of irregular massive bleeding in the gynecological outpatient department is more complicated, so the early diagnosis should be made according to the etiology, and the targeted treatment should be carried out according to the clinical manifestations. Now the irregular vaginal bleeding in clinical gynecology is summarized.
