Sporotrichosis is a chronic fungal infection with a global distribution; both sporadically occurring infections and outbreaks of cases are not uncommon. Sporothrix schenckii, as the causative agent, can be isolated from soil, wood, land, and even marine animals. We present the clinical and histopathological presentations of sporotrichosis collected in our department for about 40 years. A series of interesting pictures illustrating asteroid bodies and organism materials, which are rarely seen, are also showed. Asteroid body is characterized by the presence of radiating star-like asteroid or club-shaped eosinophilic material around spores, and 5 types of asteroid body collected in our department are presented.
Taking account of chain transfer to monomer, the
kinetics of pulsed laser-initiated
polymerization was treated in this article. The molecular weight
distribution function and the expressions
of number- and weight-average degrees of polymerization for the
resulting polymer were derived under
pseudostationary state conditions. Theoretical analysis and
numerical calculation demonstrate that the
presence of monomer transfer results in a narrower molecular weight
distribution. With the increasing
chain transfer rate constant, the polydispersity index of the resulting
polymer decreases and finally
approaches 2. Values of average degrees of polymerization and the
polydispersity index vibrate between
maxima and minima periodically, and the amplitude of the vibration
declines with the increasing monomer
conversion. The molecular weight distribution curves from
numerical calculation show characteristic
sharp peaks, and chain transfer to monomer weakens the intensity of
peaks except the low molecular
weight side one. Termination by combination leads to a little
narrower molecular weight distribution,
and so does the low concentration of the primary radical generated by
per laser pulse.
In this paper, we investigate the unique solvability and stability of the time domain electromagnetic scattering problem with a kind of unbounded scatterer, that is, a locally perturbed perfectly electrical conducting plate. Specific analysis is provided for the perfectly electrical conducting boundary condition and Maxwell's equations to accomplish the symmetric continuation, and a symmetric scattering problem with a bounded scatterer is obtained. To analyze the unique solvability and stability of time domain electromagnetic scattering problems, Fourier-Laplace transformation and a "Laplace domain to time domain" analysis are involved. A rigorous analysis implies the unique solvability and stability of the scattering problem with a locally perturbed plate and implies that the problem is equivalent to the symmetric scattering problem with a bounded scatterer.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.