13C solid-state n.m.r, spectra of samples of 14 coals and their pyridine residues representative of the three depositions in the Shanxi province of the People's Republic of China are described in detail. The results confirm those of previous infrared spectroscopy in showing these vitrinite-inertinit
Anisotropic n.m.r. spectra and the crystalline state of solid H2
β Scribed by Yan-Chi Shi; J.R. Gaines; A. Mukherjee
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 189 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0375-9601
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π SIMILAR VOLUMES
The local field approximation is modified so that the translational and rotational degrees of freedom of the He molecule are treated on an equal basis, when calculating the equation of state for solid para-H2. Near normal vapor pressure the anisotropies in the H2 pair interaction are found to make a
In the present 'H-n.m.r.-studies, we investigated the dynamics of the spins associated with the narrow component of the absorption lineshape of solid cyclohexaamylose (alpha cyclodextrin) .6 H,O. The presence of dipolar interactions in both the narrow and the broad components of the lineshape is dem