Diacetylenic glycerophosphatidylhydroxyethanol was synthesized from diacetylenic glycerophosphatidylcholine in the presence of phospholipase D from peanut seeds. The product structure was characterized by elemental an...Diacetylenic glycerophosphatidylhydroxyethanol was synthesized from diacetylenic glycerophosphatidylcholine in the presence of phospholipase D from peanut seeds. The product structure was characterized by elemental analysis, IR, 1H NMR and 13C NMR. The effects of the reaction conditions on the enzyme-catalyzed reaction are discussed. The results show that the enzyme （activity） was greatly increased by adding SDS. The yield of the reaction was increased compared with that reported in the literature under the conditions of pH=5.6, temperature 30 ℃, Ca2+ 40mmol/L, （n（substrate ）∶）n（SDS）=（2∶1）, reaction time 8 h. The cost was lower. The melting point of the product was 69.5 ℃.展开更多
In the present paper it is rcported that glycolipid was successfully inserted into colorchangeable TCDA/DGG and PCDA/DGG polydiacetylene vesicles based on physical force rather than covalent binding. And the effects o...In the present paper it is rcported that glycolipid was successfully inserted into colorchangeable TCDA/DGG and PCDA/DGG polydiacetylene vesicles based on physical force rather than covalent binding. And the effects on polyinerization of diacetylene and the change of the polymer vesicles’ color due to the relative quantity of glycolipid versus diacctylene molecules were also reported. The experimental results demonstrated that this approach is available and the colorchangeable property of such polydiacetylenic vesicles was not affected due to the inceorporation of glycolipid. This provided a simple and useful method of functonalizing the polymer vesicles for their wide applications.展开更多
R318.51 99042796有限宽光束在生物组织中的传播=Propagation of afinite—diameter light beam in biological tissues[刊,中]/陈敏,陈建文,徐至展(中科院上海光机所.上海(201800))//中国激光.—1999,26(2).—153—158用Monte Carlo方...R318.51 99042796有限宽光束在生物组织中的传播=Propagation of afinite—diameter light beam in biological tissues[刊,中]/陈敏,陈建文,徐至展(中科院上海光机所.上海(201800))//中国激光.—1999,26(2).—153—158用Monte Carlo方法讨论了有限宽光束在生物组织中的传播,模拟了当无限细光束入射、高斯光束及平面圆光束入射到生物组织时的漫反射率及漫透射率等。模拟了有限宽光束在多层生物组织中的传播。图5表2参15(赵桂云)展开更多
文摘Diacetylenic glycerophosphatidylhydroxyethanol was synthesized from diacetylenic glycerophosphatidylcholine in the presence of phospholipase D from peanut seeds. The product structure was characterized by elemental analysis, IR, 1H NMR and 13C NMR. The effects of the reaction conditions on the enzyme-catalyzed reaction are discussed. The results show that the enzyme （activity） was greatly increased by adding SDS. The yield of the reaction was increased compared with that reported in the literature under the conditions of pH=5.6, temperature 30 ℃, Ca2+ 40mmol/L, （n（substrate ）∶）n（SDS）=（2∶1）, reaction time 8 h. The cost was lower. The melting point of the product was 69.5 ℃.
文摘In the present paper it is rcported that glycolipid was successfully inserted into colorchangeable TCDA/DGG and PCDA/DGG polydiacetylene vesicles based on physical force rather than covalent binding. And the effects on polyinerization of diacetylene and the change of the polymer vesicles’ color due to the relative quantity of glycolipid versus diacctylene molecules were also reported. The experimental results demonstrated that this approach is available and the colorchangeable property of such polydiacetylenic vesicles was not affected due to the inceorporation of glycolipid. This provided a simple and useful method of functonalizing the polymer vesicles for their wide applications.
文摘R318.51 99042796有限宽光束在生物组织中的传播=Propagation of afinite—diameter light beam in biological tissues[刊,中]/陈敏,陈建文,徐至展(中科院上海光机所.上海(201800))//中国激光.—1999,26(2).—153—158用Monte Carlo方法讨论了有限宽光束在生物组织中的传播,模拟了当无限细光束入射、高斯光束及平面圆光束入射到生物组织时的漫反射率及漫透射率等。模拟了有限宽光束在多层生物组织中的传播。图5表2参15(赵桂云)
