近年来,加速器质谱(Accelerator Mass Spectrometry,简称AMS)在国际上的应用有较大的发展,每年测量的样品已达数万个。AMS主要用于测量^(14)C,^(10)Be,^(26)Al和^(36)Cl等宇宙成因核素的同位素丰度,从而推断样品的年龄或进行示踪研究。...近年来,加速器质谱(Accelerator Mass Spectrometry,简称AMS)在国际上的应用有较大的发展,每年测量的样品已达数万个。AMS主要用于测量^(14)C,^(10)Be,^(26)Al和^(36)Cl等宇宙成因核素的同位素丰度,从而推断样品的年龄或进行示踪研究。与常规质谱相比,AMS的灵敏度要高出5～7个数量级;与衰变计数法相比,AMS具有样品量小、工效高的优点。展开更多
China Report ASEAN recently spoke to Nai Chen Huang, president of Peking University Alumni Malaysia (PKUAM), in a coffee house at Peking University (PKU) Guanghua School of Management. When we arrived, he was chatting...China Report ASEAN recently spoke to Nai Chen Huang, president of Peking University Alumni Malaysia (PKUAM), in a coffee house at Peking University (PKU) Guanghua School of Management. When we arrived, he was chatting with a group of Malaysian students. Every time he visits Beijing, he makes a trip to the school to chat with teachers and students about the curriculum, their ideals and cultural and educational cooperation between China and Malaysia.展开更多
文摘近年来,加速器质谱(Accelerator Mass Spectrometry,简称AMS)在国际上的应用有较大的发展,每年测量的样品已达数万个。AMS主要用于测量^(14)C,^(10)Be,^(26)Al和^(36)Cl等宇宙成因核素的同位素丰度,从而推断样品的年龄或进行示踪研究。与常规质谱相比,AMS的灵敏度要高出5～7个数量级;与衰变计数法相比,AMS具有样品量小、工效高的优点。
文摘China Report ASEAN recently spoke to Nai Chen Huang, president of Peking University Alumni Malaysia (PKUAM), in a coffee house at Peking University (PKU) Guanghua School of Management. When we arrived, he was chatting with a group of Malaysian students. Every time he visits Beijing, he makes a trip to the school to chat with teachers and students about the curriculum, their ideals and cultural and educational cooperation between China and Malaysia.
