本文研究了榄香烯对小鼠移植性肿瘤的作用。结果表明:用榄香烯针剂腹腔给药组和瘤内注射给药组的实体瘤重均明显地比对照组轻。两种途径给药的实验组小鼠 NK 细胞对 Hca-F_(25)/CL-16A_3细胞的毒性较对照组增强,腹腔巨噬细胞对该瘤株的...本文研究了榄香烯对小鼠移植性肿瘤的作用。结果表明:用榄香烯针剂腹腔给药组和瘤内注射给药组的实体瘤重均明显地比对照组轻。两种途径给药的实验组小鼠 NK 细胞对 Hca-F_(25)/CL-16A_3细胞的毒性较对照组增强,腹腔巨噬细胞对该瘤株的杀伤力亦较对照组显著增强。实验组小鼠由 ConA 诱导的脾细胞增殖率较对照组显著增强。上述结果提示榄香烯可能具有增强细胞免疫功能,从而抑制肿瘤生长的作用。展开更多
The monolithic foamed propellants with high densities were prepared by casting and two-step foaming processes.Glycidyl azide polymer(GAP)and isocyanate were used as the binder system and 2,4,6,8,10,12-hexanitro-2,4,6,...The monolithic foamed propellants with high densities were prepared by casting and two-step foaming processes.Glycidyl azide polymer(GAP)and isocyanate were used as the binder system and 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane(HNIW,CL-20)was employed as the energetic component.The newly designed formulation containing 60%CL-20 produced a force constant of 1077 J/g and low flame temperature of 2817 K.Two foamed propellants with densities of 1.32 g/cm^(3)and 1.53 g/cm^(3)were fabricated by a confined foaming process and examined by closed bomb tests.The results revealed that porosity significantly affects burning performance.A size effect on combustion behaviors was observed for the foamed propellant with 5.56%porosity,and a double-hump progressive dynamic vivacity curve was obtained.At last,the 30 mm gun test was carried out to demonstrate the interior ballistic performance,and the muzzle velocity increased by 120 m/s at the same maximum chamber pressure when monolithic propellant was added in the charge.展开更多
文摘The monolithic foamed propellants with high densities were prepared by casting and two-step foaming processes.Glycidyl azide polymer(GAP)and isocyanate were used as the binder system and 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane(HNIW,CL-20)was employed as the energetic component.The newly designed formulation containing 60%CL-20 produced a force constant of 1077 J/g and low flame temperature of 2817 K.Two foamed propellants with densities of 1.32 g/cm^(3)and 1.53 g/cm^(3)were fabricated by a confined foaming process and examined by closed bomb tests.The results revealed that porosity significantly affects burning performance.A size effect on combustion behaviors was observed for the foamed propellant with 5.56%porosity,and a double-hump progressive dynamic vivacity curve was obtained.At last,the 30 mm gun test was carried out to demonstrate the interior ballistic performance,and the muzzle velocity increased by 120 m/s at the same maximum chamber pressure when monolithic propellant was added in the charge.
