The 2,2,6,6-tetramethylpiperidine nitroxide radicals have been receiving more and more attention from people owing to their thermal stability and application for protecting polymer materials from photo-oxidation and p...The 2,2,6,6-tetramethylpiperidine nitroxide radicals have been receiving more and more attention from people owing to their thermal stability and application for protecting polymer materials from photo-oxidation and photo-degradation. In their EI mass spectra the relative intensity of the peak of the nitroxide radical with mass number (FW+1) is usually greater than that calculated according to its natural abundance of elemental composition of the FW peak, and sometimes even greater than that of the FW peak. Therefore, it was difficult to assign the formula weight (FW) of nitroxide radical by the EI method.展开更多
In the last few years, it was discovered that intense IR laser can induce polyatomie molecules to be dissociated. The theory about this phenomenon has been formed. This letter reports on our finding that the s-trioxan...In the last few years, it was discovered that intense IR laser can induce polyatomie molecules to be dissociated. The theory about this phenomenon has been formed. This letter reports on our finding that the s-trioxane molecule also multiphoton dissociates under moderately展开更多
Alberta Ferretti配搭知性美Alberta Ferretti最擅长的就是用自己的方式,让每个女人都尽显美丽。也许这一季的主题,并不是每个人都会接受,但是至少,设计师表达出自己想要诠释的女性之美。设计师希望本次设计能打造一种全新的观念,不仅...Alberta Ferretti配搭知性美Alberta Ferretti最擅长的就是用自己的方式,让每个女人都尽显美丽。也许这一季的主题,并不是每个人都会接受,但是至少,设计师表达出自己想要诠释的女性之美。设计师希望本次设计能打造一种全新的观念,不仅仅是某件衣服的设计,而是通过整体搭配来实现,女性温和却有气势的知性美。垂直设计、边缘细节都打造出一种神秘的美感。展开更多
文摘The 2,2,6,6-tetramethylpiperidine nitroxide radicals have been receiving more and more attention from people owing to their thermal stability and application for protecting polymer materials from photo-oxidation and photo-degradation. In their EI mass spectra the relative intensity of the peak of the nitroxide radical with mass number (FW+1) is usually greater than that calculated according to its natural abundance of elemental composition of the FW peak, and sometimes even greater than that of the FW peak. Therefore, it was difficult to assign the formula weight (FW) of nitroxide radical by the EI method.
文摘In the last few years, it was discovered that intense IR laser can induce polyatomie molecules to be dissociated. The theory about this phenomenon has been formed. This letter reports on our finding that the s-trioxane molecule also multiphoton dissociates under moderately