共 50 条
- [41] Replacing mass spectrometer with optical spectrometer for measuring N-15 abundance in detecting the Helicobacter pylori infection JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES, 1996, 205 (02): : 185 - 188
- [47] FORCE CONSTANTS IN METHYLAMINE - DETERMINATION BY USE OF N-15 ISOTOPE-SHIFTS JOURNAL OF CHEMICAL PHYSICS, 1972, 57 (03): : 1236 - &
- [50] ISOTOPE RATIO MONITORING - EXTENDING TOWARD N-15 AND O-18 ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1992, 203 : 89 - GEOC