Exposing Pseudomonas aeruginosa biofilm grown on the inner surface of Teflon and silicone tubes to UVC light (265 nm) from light emitting diodes (LED) has previously been shown to substantially reduce biofilm growth. Smaller UVC fluencies were required to disinfect Teflon tubes compared to silicone tubes. Light propagation enhancement in tubes can be obtained if the refractive index of the intr...

Abstract This paper studies the non-linear distribution of bond–slip behavior in steel concrete interface a Concrete Filled Steel Tube (CFST). Specifically, it concerns regions geometric discontinuity occurring composite beams CFST column-frame connection points. The study was conducted through an analytical model that represented bond stress transfer mechanism within these areas. resulting ded...

The recycling and reuse of waste concrete is conducive to promoting the sustainable development resources practicing concept green development. Demolished lumps (DCLs) self-compacting (SCC) made from take full advantage their recyclability. In order fully utilize advantages demolished in construction, applying composite shear wall structures an effective way reduce costs improve industrial prod...

Bacterial cell division depends on the formation of a cytokinetic ring structure, the Z-ring. The bacterial tubulin homologue FtsZ is required for Z-ring formation. FtsZ assembles into various polymeric forms in vitro, indicating a structural role in the septum of bacteria. We have used recombinant FtsZ1 protein from M. jannaschii to produce helical tubes and sheets with high yield using the GT...

Objective: To assess the effect of alkaline versus acid surface treatment on bond strength of adhesives used for amalgam repair. Materials and Method: Sixty cylindrical samples were prepared by condensing amalgam into plastic tubes of 4mm diameter and 10mm length. Tubes were filled up to 5.0mm with admixed amalgam. They were allowed to set hard for three months. The samples were divided into A1...

Since its discovery in the 1920s, the Fischer-Tropsch Synthesis (FTS) has undergone periods of rapid development and periods of inaction. Within ten years of the discovery, German companies were building commercial plants. The construction of these plants stopped about 1940 but existing plants continued to operate during WWII. Two types of reactors were used in the German commercial plants: the...