High resolution proton spectra of DNA, 5'-d-TMP, 5'-d-AMP 5'-d-GMP and 5'-d-CMP in D₂O and H₂O solution was measured.
When 5'-d-TMP and 5'-d-AMP, 5'-d-GMP and 5'-d-CMP base were paired, The proton peaks became weak and changes of chemical shifts was discussed.

In this paper, triad sequences of ethylene oxide-propylene oxide randon copolymers hare been studied by ¹³C NMR. The results show that the triad sequences assigned by whipple are true, A set of substitute parameters are obtained and upon this some characteristic resonance peaks have been found in block copolymer. The difference between randon and block copolymer is discussed.

The influence of V_c on membrane fluidity was studied in this artical, by using TEMPO and fatty acid nitroxide spin labeling liposome as -well as normal and malignant cell membrane of mouse liver, in order to explore the anti-cancer mechanism of V_c. The experiments show that V_c can influence the movement of membrane lipids and membrane proteins, increase the fluidity of malignant cell membrane, and the velocity of effect is speeded up with increasing V_c concentration. However, V_c has no evident influence on normal liver cell membrane's fltiidity.In addition, within the studied concen-ration limits,the ability of V_c passing through membrane is obviously different between the normal and malignant cell of mouse liver.

Active free radicals in the photochemical hydrogen abstraction reaction between benzophenone and aromatic amines have been studied systematically by combination of spin trapping reagents and ESR.The results show that.(l) for primary and secondary amines,benzophenone abstracts H more efficiently from N than from α-C of amines to form N-centered radical (2) for tertiary amines, the abstraction of H is taken place on the α-C of amines to form C-centere dradical.

Proton NMR spectra of fluoro silicone oil and rubber (polymethyl r,r,r-trifluoropropyl siloxanes, have been assigned by using a series of modle compounds. A method was developed for the determination of molecular weight of oil. It was based on the measurment of end group.For oil ended bymethyl group,

For oil ended by hydroxy group,

S_{CH3 (a)} and S_CH3(b) are peak areas of end methyl group and remaining methyl group, respectively. X and M is polymerization degree and molecular weight, respectively.
High sensitive proton NMR spectra were used for the determination of vinyl group in rubber and composition in a series of copolymers,
vinyl mole%=(S_-CH-CH2)/S_-CH2×(2)/3
S_-CH=CH₂ and S_-CH2, are peak areas of vinyl group and -CH₂, group, respectively.

¹¹B NMR studies have been carried out in the system of lithium borosilic-ate glasses Li₂O-B₂O₃-SiO₂ The fraction of BO₄ and BO₃ units was measured and analyzed according to a structural model.The results indicate that the ternary system can be explained by a modified FDB model. The difference between the binary and ternary system is the sharing of Li₂O between borate and silica.

Visible and electron spin resonance spectra of the copper (I) comple of partially quaternized poly(4-vinylpyridine) by ethyl bromide(EBQP₄VP) by ethyl bromide(EBQP₄VP) were measured. Effects of varying temperature, Iigand/Cu(J) mole ratio, pH value of solution and the percentage of quater-nization(Q) of polymer ligand on the coordination structure of polymer-Cu (I) complex were investigated. At ligand/Cu (Ⅱ) mole ratio 2011, the reduced viscosities of solution decrease with increasing pH value of solution or decreasing Q value. Hence the shape of the polymer chain is markedly crimple, the oxidation activity of catalytic hydroquinone increases. In this time the coordination of polymer-Cu(Ⅱ) complex[CuL₄] (L is polymer ligand) is a tetragonally distorted octahedral structure.

A series of semicarbazones and thiosemicarbazones have been prepared and their ¹H and ¹³C spectra have been determined.The HMO method has been used to calculate the π-electron densities ρ_x for this series.It has been shown that a good linear relationship exists between δ_c and the π-electron densities ρ_x or the Hammett σ_p constants and between δ_H and σ_p.However the chemical shifts of their aromatic protons and aromatic carbonic atoms have been calculated bythe empirical formulas δ_c(1)=δ_c(0)+∑_jS_jiandδ_H=7.41-∑S.

The proton spin-lattice relaxation time T₁ in undoped cis-polyacetylene, trans-polyacetylene and partially deuterated trans-polyacetylene, and the proton spin-lattice relaxation time in rotating frame T_1ρ in undoped trans polyacetylene were measured.
The results indicate that trans-polyacetylene does contain a lot of spin centers called solitons, which dominate the proton relaxation in it.Solitons are mobile,but localized. Not only the multiexponential decay in T_1ρ -process,but also the independence of its decay rate from the temperature and the magnitude of the spin-locking magnetic field are interpreted by using the model of localized solitons.

In this article, ¹H NMR structural identification of Yuanhuatine-anti-fertility significant component. This component has been isolated from the flower of Yuan-hua.
Using homonuclear correlation spectra and spin decoupling experiment we confirmed the assignment of some spectral peaks. As a result,we proved the structure of this compound to be I. We refer to it as Yuanhuatine (I).

The effect of anisodamine on the fluidity of dipalmitoylphosphatidic acid liposomes has been studied by ESR technique. Results indicate that anisodamine interacts strongly with dipalmitoylphosphatidic acid membranes. Anisodamine can increase the fluidity of dipalmitoylphatidic acid liposomes with a decrease in phase transition temperature for more than 10℃ and an exhibition of phase separation. The effect of pH on the dipalmitoylphosphatidic acid liposomes also has been discussed.

By means of ³¹P NMR Spectroscopy, the configuration, association, hy-drolic stability and deuterium exchange for dialkyl phosphonates have been studied The ³¹P NMR data show that the dialkyl phosphonates exist in phosphonate form and not phosphite form In presence of silicon compounds, the dialkyl phosphonates have indicated equilibrium between phosphonate and phosphite forms. Associates occur in dialkyl phosphonates by various extent Dialkyl phosphonates hydrolyze easily, the hydrogen on the phosphorus atom is readily exchanged by deuterium in D20 and seperated signals are observed.

In the present paper, experimental method of ³¹P NMR spectra quantitation of the phosphatic compounds in intact liver fluke Fasciola hepatica and its HClO₄ extract is described. Some preliminary quantitative results and longitudinal relaxation times T₁ of corresponding compounds are also reported. The intra-cellular pH value changes during measurement without perfusion. A per-fusion system is used to maintain Sample flukes viable. Individual peaks in ³¹P NMR spectra of HClO₄ extract are identified. Dextrose containing and dextrose depleted media incubation experiments show significant metabolic change in sugar phosphate region of spectra. By ¹³C NMR spectra, one of the major compounds α-glycerophosphoeholine in ³¹P NMR spectra is confirmed.