Enterohemorrhagic Escherichia coli (EHEC) O157:H7 is a major foodborne pathogen causing hemorrhagic colitis and hemolytic-uremic syndrome. The role of EHEC O157:H7-enterohemolysin (Ehx) in the pathogenesis of infections remains poorly defined. In this study, we used gene deletion and complement methods to confirm its putative functions. Results demonstrated… (More)
Various studies examined the relationship between EZH2 overexpression with the clinical outcome in patients with non-small cell lung cancer (NSCLC), but yielded inconsistent results. Electronic databases updated to Dec 2014 were searched to find relevant studies. A meta-analysis was conducted with eligible studies which quantitatively evaluated the… (More)
BACKGROUND The gene for New Delhi metallo-β-lactamase 1 (NDM-1) has been reported to be transmitted via plasmids which are easily transferable and capable of wide distribution. We report the isolation of two NDM-1 producing strains and possible in vivo transfer of blaNDM-1 in a patient. METHODS Clinical samples were collected for bacterial culture and… (More)
Escherichia coli O157:H7 is an important food-borne pathogen that can cause hemorrhagic colitis and hemolytic-uremic syndrome in humans. pO157_Sal, a novel conjugative plasmid is present in a Chinese O157:H7 outbreak strain Xuzhou21. Here we investigated the phenotypic and transcriptional differences between the wild type strain Xuzhou21 and the pO157_Sal… (More)
Subdivision scheme is a discrete modeling method that breaches old model of surface modeling, namely, from discrete data to continuous data and last to discrete data. The method is simple, small computing and fast in modeling. This paper presents a classification standard of subdivision scheme, discusses and compares several subdivision schemes in brief.
This paper introduces a new method of surface simplification based on calculating changing rate of surface. We apply the adapted Butterfly subdivision method to determine the new vertex positions of simplified mesh, making the new vertices lie on an optimized limiting surface. We test our method on the rabbit mesh, and it is very effective to hold geometric… (More)
In this paper we present a new adaptive hybrid surfaces mesh subdivision scheme. Designers often want more flexibility in dealing with both triangles and polygons in their models. With the new subdivision scheme, Catmull-Clark subdivision and Loop subdivision results can be generated, as well as other more flexible surface shapes, by tuning the control… (More)