A mathematical model, surface-particle-emulsion heat transfer model, ispresented by considering voidage variance in emulsion in the vicinity of an immersed surface. Heattransfer near the surface is treated by disperse...A mathematical model, surface-particle-emulsion heat transfer model, ispresented by considering voidage variance in emulsion in the vicinity of an immersed surface. Heattransfer near the surface is treated by dispersed particles touching the surface and through theemulsion when the distance from the surface is greater than the diameter of a particle. A film withan adjustable thickness which separates particles from the surface is not introduced in this model.The coverage ratio of particles on the surface is calculated by a stochastic model of particlepacking density on a surface. By comparison of theoretical solutions with experimental data fromsome references, the mathematical model shows better qualitative and quantitative prediction forlocal heat transfer coefficients around a horizontal immersed tube in a fluidized bed.展开更多
Objective: To study the efficacy and mechanism of AT-1 a new compound (an aqueous agent extracted from a Traditional Chinese herb with antiplatelet efficacy) on antitumor metastases in mice. Methods:AT-1, a compound e...Objective: To study the efficacy and mechanism of AT-1 a new compound (an aqueous agent extracted from a Traditional Chinese herb with antiplatelet efficacy) on antitumor metastases in mice. Methods:AT-1, a compound extracted from a Traditional Chinese herb, was prepared by our lab. C57BL/6 female mice, which were transplanted H 22 liver cancer cells, received the agent. The tumor nodules, the pulmonary metastasis rate and tumor cell proliferation activity were tested. The tumor cells were exposed to different concentrations of AT-1, and then the condition of the tumor proliferations were tested. Results: High and middle dosages of AT-1 inhibited both the lymphatic and blood systemic tumor pulmonary metastases significantly, but had no effect on inhibition of the tumor cell proliferation in vitro. Conclusion:The major antitumor actions of AT-1 may be on antitumor metastases, and the compounnd may be a new candidate for antitumor metastases agent. More study of the mechanism and action of AT-1 on antitumor metastases and the actions are still being done deeply.展开更多
基金This work was financially supported by the Education Ministry of China
文摘A mathematical model, surface-particle-emulsion heat transfer model, ispresented by considering voidage variance in emulsion in the vicinity of an immersed surface. Heattransfer near the surface is treated by dispersed particles touching the surface and through theemulsion when the distance from the surface is greater than the diameter of a particle. A film withan adjustable thickness which separates particles from the surface is not introduced in this model.The coverage ratio of particles on the surface is calculated by a stochastic model of particlepacking density on a surface. By comparison of theoretical solutions with experimental data fromsome references, the mathematical model shows better qualitative and quantitative prediction forlocal heat transfer coefficients around a horizontal immersed tube in a fluidized bed.
文摘Objective: To study the efficacy and mechanism of AT-1 a new compound (an aqueous agent extracted from a Traditional Chinese herb with antiplatelet efficacy) on antitumor metastases in mice. Methods:AT-1, a compound extracted from a Traditional Chinese herb, was prepared by our lab. C57BL/6 female mice, which were transplanted H 22 liver cancer cells, received the agent. The tumor nodules, the pulmonary metastasis rate and tumor cell proliferation activity were tested. The tumor cells were exposed to different concentrations of AT-1, and then the condition of the tumor proliferations were tested. Results: High and middle dosages of AT-1 inhibited both the lymphatic and blood systemic tumor pulmonary metastases significantly, but had no effect on inhibition of the tumor cell proliferation in vitro. Conclusion:The major antitumor actions of AT-1 may be on antitumor metastases, and the compounnd may be a new candidate for antitumor metastases agent. More study of the mechanism and action of AT-1 on antitumor metastases and the actions are still being done deeply.
