Fluorine-18 (18F) has proven to be one of the preferred radioisotopes because its decay energy of 0.64 MeV makes possible a high inherent resolution during PET measurements. 18F, moreover, has an advantageous h
A preferable isotope is I125 : it has a half life of about 60 days, readily reacts with most antigens, has a higher specific activity than H3, C14, or I131, has a lower gamma energy than does I131, and has an absence of β-radiation with absence diminishes the potential for auto ...
The locations of the heme and of nine mutations selected for study are shown in the ribbon diagram for sperm-whale myoglobin in Fig. 1. Locations were selected to sample regions of the protein with differing orientations of the electron-electron interspin vector relative to the magnetic axes of...
to what energy level the transition occurs. The lowest vibronic level of first excited state remains unchanged. The absorption maxima of several such esters are: (1) ethylene glycol 796 nm (nanometers); (2) 1,3-Propanediol 780 nm; (3) 1,4-Butanediol 754 nm; (4) 1,6-Hexanediol 744 ...
Scheme 1 Schematic diagram of the fluorescence resonance energy transfer process between Cd e nanoparticles and Au particles with DNA Linked 荧光共振能量转移技术在核酸、蛋白质、细胞器结构功能测试、免疫测试、配体-受体相互作用等 6 5 2 高等学校化学学报 VoI. 28 方面都有巧妙而有效的应用,在DNA 检测方...
"Near-Infrared Fluorogenic Labels: New Approach to an Old Problem" by G. Patonay and M. Antoine; Analytical Chemistry, vol. 63, No. 6, Mar. 15, 1991; pp. 321A-327A. "Semiconductor laser-induced fluorescence detection in capillary electrophoresis using a cyanine dye" by F. Chen, A. ...