Results:In all clinical samples,stenotrophomonas maltophilia separated from phlegm liquid is the most (75% ) , then is the clear urine( 10% ) ,this fungus is nature resistance to the action of the iminepinan. The drug resistance of ampicillin,amoxicillin/clavulanic acid,cefazolin,furantoin,cefuroxime are 100% .
So, we first studied the innate resistant mechanism of HCC Bel7402 cell line, and then we successfully established a 161 fold resistant cell line named Bel5-FU20000 in vitro by continuous stepwise exposure of Bel7402 cells to 5-FU for 6 months.
Results 10 strains were vancomycin-resistant or intermediate to enterococci,5 strains were intrinsic resistance to vancomycin,5 strains were VRE(vanA for 1 strains,vanC1 for 4 strains,vanC2 for 3 strains,2 strains were unknown).
Natural decay resistance of Popu lus delioidcs Bartr. Var delloides cv. 'Lux' is determined by soil-bloek method. The test results show that weight loss percentage of this species of wood attached by Coriolus versi color and Gloeop-hllum trabeum arc 51.72% and 71.55% after 9 weeks, respectively, belonging to "non-resistant" species. By observing the hyphal distribution and the penetration in wood cells and microstructural changes of cell walls, the process of degradation of wood cell walls are revealed.
Natural decay resistance of the heartwood of Cunninghamia lanceolata, Phoebe sheareri, Sassafras tzumu, Quercus fabri, and Catalpa bungei was determined by the soil-block method with Coriolus versicolor (white rotter) and Gloeophyllum trabeurn (brown rotter) in the laboratory. The changes in amounts of major components during decay of samples were analysed. The results showed that decay resistance of the heartwoods was very resistant or resistant to both C. versicolor and G. trabeum, but Populus deltoides a...
The changes in ultrastructure and crystallinity of the heartwood of Cun-ninghamia lanceolaia, Catalpa bungei and the sapwood of Populus deltoides during decay by C. versicolor and G. trabtum were studied by Scanning Electron Microscopy and X-ray diffraction method. Results show that Populus dehoidcs was havily rotted by the white-rot and brown-rot fungi. The crystallinity was decreased by 50% after 12 weeks decay by the brown-rot fungus. But treated wity the same methods and duration only slight change were...