Background The relationship between signal transduction and tumors has become one of the loci in cancer research. Signal transducer and activator of the transcription 6 （STAT6） signaling pathway is found to be activ...Background The relationship between signal transduction and tumors has become one of the loci in cancer research. Signal transducer and activator of the transcription 6 （STAT6） signaling pathway is found to be activated in some cancer cells. But the function of the pathway in cancer cells is unknown. This study was undertaken to investigate the effect of the Stat6 signaling pathway on apoptosis in human colon cancer cells （HT-29 cells） and the possible mechanism of Stat6 by RNA interference techniques.展开更多
The temperature distribution of COREX melter gasifier was studied by using a two-dimensional 1/30 scale thermal dynamic model.A set of operating conditions,such as radial distribution of direct reduction iron（DRI） t...The temperature distribution of COREX melter gasifier was studied by using a two-dimensional 1/30 scale thermal dynamic model.A set of operating conditions,such as radial distribution of direct reduction iron（DRI） to lump coal and coke volume ratio,coke charging location,coke charging amount and coke size,were taken into account.The results show that the temperature near the wall region decreases with the decrease of the radial distribution of DRI to lump coal and coke volume ratio.The temperature with central coke charging is higher than that without central coke column.Furthermore,the temperature significantly increases with the increase of central coke charging amount.With the increase of intermediate coke charging amount,the temperature near the wall region decreases while the temperature in the intermediate region increases.The temperature increases with the increase of coke size whether charging central coke or intermediate coke.展开更多
The raceway has been studied extensively both theoretically and experimentally. The raceway boundary is coarse and fragmentary,but all of previous studies are based on Euclidean geometry,which regards the dimension of...The raceway has been studied extensively both theoretically and experimentally. The raceway boundary is coarse and fragmentary,but all of previous studies are based on Euclidean geometry,which regards the dimension of raceway as an integer. The fractal method of calculating raceway size,which describes boundary with extremely irregular or fragmentary characteristic,is brought forward in physical model. The fractal theory is used to calculate the fractal dimension of raceway boundary and the precise surface area of ellipsoidal raceway boundary. The result shows that the surface area based on fractal is larger than that based on Euclidean. And the surface area increases with the rise of blowing rate.展开更多
基金This study was supported by grants from the National Science Foundation of China (No. 30470981) and the National Science Foundation of Hubei Province (No. 2005ABA103).
文摘Background The relationship between signal transduction and tumors has become one of the loci in cancer research. Signal transducer and activator of the transcription 6 （STAT6） signaling pathway is found to be activated in some cancer cells. But the function of the pathway in cancer cells is unknown. This study was undertaken to investigate the effect of the Stat6 signaling pathway on apoptosis in human colon cancer cells （HT-29 cells） and the possible mechanism of Stat6 by RNA interference techniques.
基金Item Sponsored by Fundamental Research Funds for Central Universities of China(090402021)
文摘The temperature distribution of COREX melter gasifier was studied by using a two-dimensional 1/30 scale thermal dynamic model.A set of operating conditions,such as radial distribution of direct reduction iron（DRI） to lump coal and coke volume ratio,coke charging location,coke charging amount and coke size,were taken into account.The results show that the temperature near the wall region decreases with the decrease of the radial distribution of DRI to lump coal and coke volume ratio.The temperature with central coke charging is higher than that without central coke column.Furthermore,the temperature significantly increases with the increase of central coke charging amount.With the increase of intermediate coke charging amount,the temperature near the wall region decreases while the temperature in the intermediate region increases.The temperature increases with the increase of coke size whether charging central coke or intermediate coke.
基金Item Sponsored by Fundamental Research Funds for Central Universities of China (N090402021)
文摘The raceway has been studied extensively both theoretically and experimentally. The raceway boundary is coarse and fragmentary,but all of previous studies are based on Euclidean geometry,which regards the dimension of raceway as an integer. The fractal method of calculating raceway size,which describes boundary with extremely irregular or fragmentary characteristic,is brought forward in physical model. The fractal theory is used to calculate the fractal dimension of raceway boundary and the precise surface area of ellipsoidal raceway boundary. The result shows that the surface area based on fractal is larger than that based on Euclidean. And the surface area increases with the rise of blowing rate.
