The complete relaxation matrix analysis method was used to process the peak intensity matrix of phase sensitive NOESY spectrum of nervosin. The cross relaxation rates between proton pairs were obtained by diagonalizing the peak intensity matrix of NOESY spectrum and the inter-proton distances in nervosin molecule were calculated according to 1/r_tf⁶∝σ_tf. The calculated results of complete relaxation matrix analysis method are in agreement with the inter-proton distances calculated by molecular mechanics and determined by single crystal X-ray diffraction method.

Proton spin-lattice relaxation times are reported for a 30% polyesterpolyurethane zwitterionomer solution. Measurements of spin-lattice relaxation time as a function of temperature are included. The correlation times of molecular reorientation were calculated with the isotropic model according to BPP theory. The proton spin-lattice relaxation time of polyesterpolyurethane is dominated by dipole-dipole interaction. The molecular reorientations are not at the same time scale between the hard and the soft segments. The molecular reorientation of the soft segments is much faster than that of the hard segment. Strong hydrogen bonds in the hard segments make molecular reorientations of the hard segment groups to have close correlation times. The interactions between the hard and the soft segments in polyesterpolyurethane can also be investigated by comparison of the correlation times in temperature range studied and by comparison of apparent activation energies of four NH peaks.

The photoinduced electron transfer processes between zinc oxide and 9 kinds of Paraquats have been studied systematically by means of ESR. The dispersion system of ZnO-Paraquat-Micelle-benzene could give strong ESR signals after being irradiated by UV light, it means that photoinduced electron transfer processes between ZnO solid and Paraquat molecules took place without doubt, and PQ⁺⁺ were reduced to form PQ⁺ radicals. The results also show that the PQ⁺ radicals with conjugation structure might give stronger ESR signals than those without conjugation structure; Micelle could also increase the strength of ESR signals; As oxygen was present in the system, ESR signals of PQ⁺ radicals disappeared, but spin adducts[DMPO-O₂^-]^· and[DMPO-OH]^· were detected. It is sure that the photoinduced electron transfer processes between ZnO and Paraquats can be seriously obstructed by oxygen.

The nonsymmetric 2D NOESY method is proposed to measure the full 2D NOESY mixing coefficient matrix. Theoretical researchs showed that the nonsymmetric 2D NOESY has a nonsymmetric peak intensity matrix and a higher signal-to-noise ratio than the conventional one. Therefore, it is possible that the full 2D NOESY mixing coefficient matrix can be obtained only from the off-diagonal elements of peak intensity matrix of the nonsymmetric 2D NOESY, which is impossible for the conventional 2D NOESY, and the peak intensity measurement of overlapping diagonal elements of the nonsymmetric 2D NOESY in such spin systems as biomacromolecules may be avoided doing. In the final the theoretical results were confirmed with numerical simulated studies.

¹H NMR spectra of five kinds of plant oils and the ¹H spin-lattice relaxation time T₁ of CCH₂C functional group have been obtained in this paper. The number of functional groups, the unsaturation degree, the esterification degree for each mole of oil have also been calculated. ¹³C NMR spectra of soybean oil and tea oil have been recorded. From these ¹³C NMR spectra, we have calculated the ratios of each functional group to methyl group, which agree with the results obtained by ¹H NMR quite well, and the mole percentage of saturated and unsaturated fatty acid glycerides in the two oils.

A new formalism for describing the evolution of density operators of spin systems under weak rf. field such as selective irradiation is proposed. Some experiments were treated in detail including spin-tickling and spin interferometry on a system of two coupled spin-1/2 nuclei which was a manifestation of the spinor property of the spin-1/2 particle.

In this paper ²³Na NMR technique with shift reagent Dy(PPPi)₂^7- was used to study a new type of photosensitizer-Hypocrellin B which photosensitized damage on Na⁺ permeability of ascitic hepatoma cells. The experimental results show that intracellular Na⁺ concentration increases with both light dose and photosensitizer concentration. It was also observed that the chemical shift of ²³Na_out NMR peak moved to downfieid as illumination time was increased in the presence of HB.
Analysis indicates that the changes of chemical shift relate to the loss of intraceilular K⁺ and K⁺ competes with Na⁺ for shift reagent. Therefore, the changes of chemical shift may be an index of photosensitized damage. The relation between the increase of Na⁺ concentration and cell death was discussed.

The chemical structure of a new alkaloid named Stellarine A was determined based on NMR spectra of 2D and selective long-range DEPT, and total assignment of ¹H and ¹³C spectra achieved.

Various NMR spectra (including ¹H、¹³C、DEPT, COSY, C, H-COSY, COLOC and NOE difference spectra) were used in the assignments of ¹³C and ¹H and conformation studies of squasapogenol.

ESR spectra of VO-asp-phen and VO-asp-bipy ternary systems in glycol and water (1:1) solution at various acidity have been observed at low temperature. It has been found that in different pH range the different structural complexes have formed. According to Johnson's rule and IR their possible structures were suggested. Using electronic spectral data, the crystal field parameters were calculated.

In the diagnosis of malignent with ESR technique, we observed that the signal of ESR waving spectrum was obvious for black hair, while ESR signal of white hair was weaker. The results show that human hair consists of 17 species of amino acids, the contents of which in black hair were identical with those in white hair, but the unique difference between black and white hairs was shown to be melanin. The carrier of ESR signal consists of melanin, protein and lipid, among them, melanin is the fundametal carrier of ESR signal.

A study of the exchange process between the protons in a hydrated Cr(Ⅲ) ion and bulk was made with ¹H NMR. In the region of pH=0-3.17, the average lifetime of the protons in hydration sphere is of 10s order. There is a dynamic exchange process of protons with a mixture of first and second-order in pH=0-0.76 and only first order in pH=0.76-1.6. In system of Cr(Ⅲ)-H₂O-Gly, it was found that the protons in hydration sphere have activity weaken.

Using a series of one and two-dimensional NMR techniques, the ¹H and ¹³C NMR spectra of oridonin and lasiokaurinal were assigned completely.

Some basic ESR experiments on effect of power saturation of quartz in sediments were introduced. Experimental results suggest that the selection of microwave power, which directly affects the evalation of accumulated dose (AD) and seriously affects the result of ESR dating, is an important parameter. In some special geological conditions, e. g. loess and marine sediments, the reliable ESR ages can be obtained from E' centres of quartz in older sediments (>500ka) by using a higher microwave power.

The nuclear magnetic hyperfine LMR spectrum of NO, NO₂ is observed by intracavity laser magnetic resonance (LMR) experiment with a CO laser and a data acquired technique with a PC-AT. The measure principle is briefly introduced and results are reported.

The structure of solid solutions Li_1+2xTi_2-xMg_xP₃O₁₂, in which magnesium were doped, were studied by solid-state high-resolution ³¹P MAS NMR with P atom as a probe of the structure. The relationship between ³¹P NMR lines with different chemical shifts and the local structure units Q°in solid solution systems were determined by using a linear correlation between ³¹P isotropic chemical shift and field strength F of the cation of the second coordination sphere. These results give interpretation for the change of local structure due to the substitution of titanium by magnesium.