We report for the first time the theoretical analysis and experimental results of a white-light reconstructed monochromatic 3-D image synthesizing tomograms by multiple rainbow holo-graphy with vertical-area partition...We report for the first time the theoretical analysis and experimental results of a white-light reconstructed monochromatic 3-D image synthesizing tomograms by multiple rainbow holo-graphy with vertical-area partition (VAP) approach. The theoretical and experimental results show that 3-D monochromatic image can be synthesized by recording the master hologram by VAP ap-proach without any distortions either in gray scale or in geometrical position. A 3-D monochromatic image synthesized from a series of medical tomograms is presented in this paper for the first time.展开更多
The breast milk of HIV infected women contains HIV virus particles,therefore children can become infected through breastfeeding.We develop a mathematical epidemiological model of HIV infection in infants,infected chil...The breast milk of HIV infected women contains HIV virus particles,therefore children can become infected through breastfeeding.We develop a mathematical epidemiological model of HIV infection in infants,infected children and infected women that represents infection of an infant/child as a series of exposures,by incorporating within-host virus dynamics in the individuals exposed to the virus through breastfeeding.We show that repeated exposures of the infant/child via breastfeeding can cause bi-stability dynamics and,subsequently,infection persistence even when the epidemiological basic reproduction number R0 is less than unity.This feature of the model,due to a backward bifurcation,gives new insight into the control mechanisms of HIV disease through breastfeeding.展开更多
基金This work was supported by the National Natural Science Foundation of China (Grant No. 69677020) and the Tianjin Foundation of Natural Science for this research.
文摘We report for the first time the theoretical analysis and experimental results of a white-light reconstructed monochromatic 3-D image synthesizing tomograms by multiple rainbow holo-graphy with vertical-area partition (VAP) approach. The theoretical and experimental results show that 3-D monochromatic image can be synthesized by recording the master hologram by VAP ap-proach without any distortions either in gray scale or in geometrical position. A 3-D monochromatic image synthesized from a series of medical tomograms is presented in this paper for the first time.
文摘The breast milk of HIV infected women contains HIV virus particles,therefore children can become infected through breastfeeding.We develop a mathematical epidemiological model of HIV infection in infants,infected children and infected women that represents infection of an infant/child as a series of exposures,by incorporating within-host virus dynamics in the individuals exposed to the virus through breastfeeding.We show that repeated exposures of the infant/child via breastfeeding can cause bi-stability dynamics and,subsequently,infection persistence even when the epidemiological basic reproduction number R0 is less than unity.This feature of the model,due to a backward bifurcation,gives new insight into the control mechanisms of HIV disease through breastfeeding.
