magic angle造句
例句與造句
- These polarization artifacts can be combated by placing an emission polarizer at the magic angle of 54.7?
- Triple resonance experiments can also be used in sequence-specific backbone resonance assignment of magic angle spinning NMR spectra in solid-state NMR.
- Of the latter approach, fast spinning around the magic angle is a very prominent method, when the system comprises spin 1 / 2 nuclei.
- As sensitivity has improved with the evolution of higher magnetic field strengths and magic angle spinning, NMR continues to be a leading analytical tool to investigate metabolism.
- In solid-state NMR spectroscopy, magic angle spinning is required to average out this orientation dependence in order to obtain values close to the average chemical shifts.
- It's difficult to find magic angle in a sentence. 用magic angle造句挺難的
- Under sufficiently fast magic angle spinning, or in solution-state NMR, the directionally dependent character of the chemical shielding is removed, leaving the isotropic chemical shift.
- Magic angle spinning is a technique in solid-state NMR spectroscopy which employs this principle to remove or reduce the influence of anisotropic interactions, thereby increasing spectral resolution.
- If the sample is excited with a pulsed vertically orientated excitation source then a single decay time \ tau should be measured when the emission polarizer is at the magic angle.
- A technique that can substantially reduce or remove the chemical shift anisotropy, the dipolar coupling is " sample rotation " ( most commonly magic angle spinning, but also off-magic angle spinning ).
- A technique that can substantially reduce or remove the chemical shift anisotropy, the dipolar coupling is " sample rotation " ( most commonly magic angle spinning, but also off-magic angle spinning ).
- However, these three interactions in solids are orientation-dependent and can be averaged by MAS . The nuclear dipole-dipole interaction, between magnetic moments of nuclei averages to zero only at the magic angle, ? m.
- Next, the cube is rotated ?5?about the vertical axis, followed by a rotation of approximately ?5.264?( precisely arcsin } } or arctan } }, which is related to the Magic angle ) about the horizontal axis.
- Magic angle " ? " is also half of the opening angle formed when a cube is rotated from its space diagonal axis, which may be represented as arccos " or 2 arctan radians H " 109.4712?
- This double magic angle is directly related to Tetrahedral molecular geometry and is the angle from one vertex to the exact center of the tetrahedron ( " i . e . ", the edge central angle also known as the tetrahedral angle ).
- Time-dependent interactions, such as homonuclear dipolar couplings, are more difficult to average to their isotropic values by magic angle spinning; a network of strongly coupled spins will produce a mixing of spin states during the course of the sample rotation, interfering with the averaging process.
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