Based on the lattice Boltzmann method (LBM), the sedimentations of a single elastic dumbbell in a Newtonian fluid under different initial positions and orientations, and also that of the elastic dumbbells with differe...Based on the lattice Boltzmann method (LBM), the sedimentations of a single elastic dumbbell in a Newtonian fluid under different initial positions and orientations, and also that of the elastic dumbbells with different free lengths of the spring under the same initial conditions have been simulated. All of the numerical results show that the final orientations of the elastic dumbbells are in the same horizontal direction, and the final positions of their centroids are all on the centerline of the tube no matter what the initial positions and orientations of the elastic dumbbell or the free lengths of the spring are. When the elastic dumbbell finally falls down vertically, the two circular cylinders of the elastic dumbbell rotate around their own symmetry-axis respectively, and their angular velocities are equal but opposite to each other. For the sedimentations of the elastic dumbbells with different free lengths of the spring, the shorter of the free length is, the faster the final angular velocity and vertical velocity of the circular cylinder will be.展开更多
Infections caused by opportunistic organisms which have been known asetiologic agents of disease become more and more frequent. Aspergillus spp. is one of the agents.Fungi of aspergillus genus are widely distributed i...Infections caused by opportunistic organisms which have been known asetiologic agents of disease become more and more frequent. Aspergillus spp. is one of the agents.Fungi of aspergillus genus are widely distributed in nature, particularly in the soil and in thedecomposed vegetation. They are frequent opportunist pathogens in immunocompromised patients. Themost frequent causative organisms that cause cutaneous aspergillosis are A. fumigatus and A. flavus.In this report, we present a case of primary cutaneous aspergillosis manifested by ulceration ofthe shank due to A. flavus. The patient had no deficiency of immunological status and severe diseaseassociated with fungal infection. Excellent response was shown to anti-fungal therapy.展开更多
文摘Based on the lattice Boltzmann method (LBM), the sedimentations of a single elastic dumbbell in a Newtonian fluid under different initial positions and orientations, and also that of the elastic dumbbells with different free lengths of the spring under the same initial conditions have been simulated. All of the numerical results show that the final orientations of the elastic dumbbells are in the same horizontal direction, and the final positions of their centroids are all on the centerline of the tube no matter what the initial positions and orientations of the elastic dumbbell or the free lengths of the spring are. When the elastic dumbbell finally falls down vertically, the two circular cylinders of the elastic dumbbell rotate around their own symmetry-axis respectively, and their angular velocities are equal but opposite to each other. For the sedimentations of the elastic dumbbells with different free lengths of the spring, the shorter of the free length is, the faster the final angular velocity and vertical velocity of the circular cylinder will be.
文摘Infections caused by opportunistic organisms which have been known asetiologic agents of disease become more and more frequent. Aspergillus spp. is one of the agents.Fungi of aspergillus genus are widely distributed in nature, particularly in the soil and in thedecomposed vegetation. They are frequent opportunist pathogens in immunocompromised patients. Themost frequent causative organisms that cause cutaneous aspergillosis are A. fumigatus and A. flavus.In this report, we present a case of primary cutaneous aspergillosis manifested by ulceration ofthe shank due to A. flavus. The patient had no deficiency of immunological status and severe diseaseassociated with fungal infection. Excellent response was shown to anti-fungal therapy.
