The UV absorption and fluorescence spectra of 1,3-di (α-naphthyl) propane (1), di (α- naphthylmethyl) ether (2), and α-methylnaphthalene (3) in aqueous methanol, ethanol, and DMSO were recorded as a function of Φ ...The UV absorption and fluorescence spectra of 1,3-di (α-naphthyl) propane (1), di (α- naphthylmethyl) ether (2), and α-methylnaphthalene (3) in aqueous methanol, ethanol, and DMSO were recorded as a function of Φ value (fraction of water in binary solvents). The existence of two sta- tes, a metastable state (defined as m) and a stable stationary state (defined as s), of molecules 1 as well as 2 in the above cosolvents at high Φ was shown by the contrary fluorescence excimer to monomer intensity (Ie/Im)vs. Φ relationships of the samples prepared with different processes. On the basis of the Φ value, substrate concentration, and the temperature dependence of the UV spectra. fluores- cence excitation and emission spectra, the chromophores of 1, 2 show the formation of aggregates in ground state at high Φ owing to the hydrophobic interaction. The m states consist of a supersaturated solution with aggregates, whereas the s states are suspended microcrystals or micro-oil-droplets with aggregates. The conformations of the molecules in the aggregates were discussed. Single crystal X-ray structure of 2 is reported.展开更多
In order to investigate the mechanism of action of immunoenhancer, the effects of the traditional Chinese medicine immunopromoter on the quantity and the transformation rates of T lymphocytes in the chicken blood were...In order to investigate the mechanism of action of immunoenhancer, the effects of the traditional Chinese medicine immunopromoter on the quantity and the transformation rates of T lymphocytes in the chicken blood were determined. Total 120 chickens were randomly assigned into three groups. The 1% and the 0.5% of the Chinese medicine immunopromoter were added to the chicken drinking water, respectively. The quantity of T lymphocytes in each group was measured by a-Naphthyl acetate esterase （ANAE） staining. The results showed that the percentages of T lymphocytes of the treatment groups were significantly higher than that of the control group （P〈0.05）, and the percentage of the 1% group significantly higher than that of the 0.5% group （P〈0.05）. In conclusion, the transformation rates of T lymphocytes showed that the Chinese medicine immunopromoter had the significant enhancing effect on the transformation rates of T lymphocytes of the treated chickens. The traditional Chinese medicine immunopromoter had the distinct function to promote the quantity and the transformation rate of T lymphocytes.展开更多
基金This work was supported by the National Natural Science Foundation of Chinathe National Education Commission Foundation of China.
文摘The UV absorption and fluorescence spectra of 1,3-di (α-naphthyl) propane (1), di (α- naphthylmethyl) ether (2), and α-methylnaphthalene (3) in aqueous methanol, ethanol, and DMSO were recorded as a function of Φ value (fraction of water in binary solvents). The existence of two sta- tes, a metastable state (defined as m) and a stable stationary state (defined as s), of molecules 1 as well as 2 in the above cosolvents at high Φ was shown by the contrary fluorescence excimer to monomer intensity (Ie/Im)vs. Φ relationships of the samples prepared with different processes. On the basis of the Φ value, substrate concentration, and the temperature dependence of the UV spectra. fluores- cence excitation and emission spectra, the chromophores of 1, 2 show the formation of aggregates in ground state at high Φ owing to the hydrophobic interaction. The m states consist of a supersaturated solution with aggregates, whereas the s states are suspended microcrystals or micro-oil-droplets with aggregates. The conformations of the molecules in the aggregates were discussed. Single crystal X-ray structure of 2 is reported.
基金Hebei Science and Technology Office Programme (07220401D)Guangdong Science and Technology Office Programme (2006B203010 1020)
文摘In order to investigate the mechanism of action of immunoenhancer, the effects of the traditional Chinese medicine immunopromoter on the quantity and the transformation rates of T lymphocytes in the chicken blood were determined. Total 120 chickens were randomly assigned into three groups. The 1% and the 0.5% of the Chinese medicine immunopromoter were added to the chicken drinking water, respectively. The quantity of T lymphocytes in each group was measured by a-Naphthyl acetate esterase （ANAE） staining. The results showed that the percentages of T lymphocytes of the treatment groups were significantly higher than that of the control group （P〈0.05）, and the percentage of the 1% group significantly higher than that of the 0.5% group （P〈0.05）. In conclusion, the transformation rates of T lymphocytes showed that the Chinese medicine immunopromoter had the significant enhancing effect on the transformation rates of T lymphocytes of the treated chickens. The traditional Chinese medicine immunopromoter had the distinct function to promote the quantity and the transformation rate of T lymphocytes.
