Correlation of proton chemical shifts by two-dimensional Fourier transform NMR
نویسندگان
چکیده
منابع مشابه
Correlation of Isotropic Shifts and Chemical Shift Anisotropies by Two-Dimensional Fourier-Transform Magic-Angle Hopping NMR Spectroscopy
During the 1960s Andrew and others examined the rapid spinning of a sample about an axis that makes an angle of 54” 44’ with the direction of the static magnetic field (I-LJ in order to remove broadening effects in the NMR spectra of solids (l-3). It was much later when Schaefer and Stejskal (4) applied this approach, magic-angle spinning (MAS), to remove broadening due to chemical shift anisot...
متن کاملSpin-Noise-Detected Two-Dimensional Fourier-Transform NMR Spectroscopy
We introduce two-dimensional NMR spectroscopy detected by recording and processing the noise originating from nuclei that have not been subjected to any radio frequency excitation. The method relies on cross-correlation of two noise blocks that bracket the evolution and mixing periods. While the sensitivity of the experiment is low in conventional NMR setups, spin-noise-detected NMR spectroscop...
متن کاملThree-dimensional optical Fourier transform and correlation.
Optical implementation of a three-dimensional (3-D) Fourier transform is proposed and demonstrated. A spatial 3-D object, as seen from the paraxial zone, is transformed to the 3-D spatial frequency space. Based on the new procedure, a 3-D joint transform correlator is described that is capable of recognizing targets in the 3-D space.
متن کاملProton NMR chemical shifts and coupling constants for brain metabolites.
Proton NMR chemical shift and J-coupling values are presented for 35 metabolites that can be detected by in vivo or in vitro NMR studies of mammalian brain. Measurements were obtained using high-field NMR spectra of metabolites in solution, under conditions typical for normal physiological temperature and pH. This information is presented with an accuracy that is suitable for computer simulatio...
متن کاملResolving Nitrogen-15 and Proton Chemical Shifts for the Mobile Segments of Elastin with Two-Dimensional NMR Spectroscopy
In this study, oneand two-dimensional NMR experiments are applied to uniformlyN-enriched synthetic elastin, a recombinant human tropoelastin that has been crosslinked to form an elastic hydrogel. Hydrated elastin is characterized by large segments that undergo “liquidlike” motions that limit the efficiency of cross-polarization. The refocused INEPT experiment is used to target these extensive, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Magnetic Resonance (1969)
سال: 1981
ISSN: 0022-2364
DOI: 10.1016/0022-2364(81)90022-6