An amphiphile, 9-octanyl adenine trimethylammonium bromide(OATMAB amphiphile 3), was synthesized as the receptor. The coliposomes were prepared from phosphatidylcholine and 9-octyl adenine trimethylammonium bromide by...An amphiphile, 9-octanyl adenine trimethylammonium bromide(OATMAB amphiphile 3), was synthesized as the receptor. The coliposomes were prepared from phosphatidylcholine and 9-octyl adenine trimethylammonium bromide by sonication of CHCl 3-cast films of amphiphiles mixtures [n(PC)∶ n(MOATMAB)=10∶1] in doubly distilled water with a bath-type sonicator at 80 W for 3 h. As thymine was added into PC/MAOTMAB coliposomal solution, the absorbability of thymine at 263 nm decreased slowly with time change from 0 to 72 h. The UV-Vis spectroscopic behavior of the thymine in PC/OATMAB/thymine coliposomes(molar ratio=10∶1∶1) was slowly decreaced with the increase of time. The onset of a hypochromic effect can be ascribed to adenine-thymine interaction. The absorption band levels off at 45.4% of its initial value and stabilizes after several weeks.展开更多
Focusing on the hydraulic oil system piping vibration of the locked butterfly valve of type HD37s41X 6ZN and violent swing of the butterfly valve’s hammer occurred during the system operation in our plant, this artic...Focusing on the hydraulic oil system piping vibration of the locked butterfly valve of type HD37s41X 6ZN and violent swing of the butterfly valve’s hammer occurred during the system operation in our plant, this article makes analysis for its course and provides concrete scheme to solve it, which has obtained favorable effects in several uses. Meanwhile this method is easy to operate.Only for communication and reference here, and it help you to deal with the similar questions in your company.展开更多
文摘An amphiphile, 9-octanyl adenine trimethylammonium bromide(OATMAB amphiphile 3), was synthesized as the receptor. The coliposomes were prepared from phosphatidylcholine and 9-octyl adenine trimethylammonium bromide by sonication of CHCl 3-cast films of amphiphiles mixtures [n(PC)∶ n(MOATMAB)=10∶1] in doubly distilled water with a bath-type sonicator at 80 W for 3 h. As thymine was added into PC/MAOTMAB coliposomal solution, the absorbability of thymine at 263 nm decreased slowly with time change from 0 to 72 h. The UV-Vis spectroscopic behavior of the thymine in PC/OATMAB/thymine coliposomes(molar ratio=10∶1∶1) was slowly decreaced with the increase of time. The onset of a hypochromic effect can be ascribed to adenine-thymine interaction. The absorption band levels off at 45.4% of its initial value and stabilizes after several weeks.
文摘Focusing on the hydraulic oil system piping vibration of the locked butterfly valve of type HD37s41X 6ZN and violent swing of the butterfly valve’s hammer occurred during the system operation in our plant, this article makes analysis for its course and provides concrete scheme to solve it, which has obtained favorable effects in several uses. Meanwhile this method is easy to operate.Only for communication and reference here, and it help you to deal with the similar questions in your company.
